Materials Nanotechnology Research Articles

Green Synthesis of Silver Nanoparticle using Anthurium andraeanum Leaves Extract for High School Practicum Module

Nanotechnology is a new subject in the Merdeka Curriculum that presents challenges in the chemistry learning process. Teachers need help delivering nanotechnology material due to a lack of understanding of the material and teaching materials. Therefore, a practicum module for synthesizing silver nanoparticles based on green chemistry was developed. The objectives of this study were (1) to know the quality of the practicum module in terms of feasibility and (2) to know the teacher's response to the developed module. The results of this study indicate that (1) Anthurium andraeanum leaves have the potential as a bioreductor for the synthesis of silver nanoparticles based on the color change of the silver nanoparticles solution and based on the absorption of UV-Vis spectrophotometer light at a wavelength of 438 nm which shows the characteristics of silver nanoparticles. (2) The developed practicum module has met the criteria of being highly valid, with a percentage of 93% in terms of media and 88% in terms of material. (3) The teacher's response to the developed product is very good, with a percentage of 98%. The developed practicum module is suitable for use in learning nanotechnology.

High photothermal conversion of AgPdCu alloy hollow nanospheres with enhanced intraband transitions for sensitive detection of Albendazole

A popular point-of-care diagnostic method is lateral flow immunoassay (LFIA) with gold nanoparticles (AuNPs) as a signal tracer. However, considering the weak absorbance of conventional AuNPs, the poor sensitivity has greatly limited the wide application of AuNPs-LFIA. With the development of nanomaterials, the engineering of multifunctional composite nanomaterials (NPs) with synergistic size tuning and shape engineering provides extraordinary opportunities to improve the sensitivity of LFIA. Taking advantage of the electronic effects of three kinds of metallic elements including Ag, Pd, and Cu, trimetallic-alloys AgPdCu hollow nanospheres (AgPdCuHNs) with crystal defects was prepared, featuring excellent colorimetric signal (α = 6.6 L/g cm−1), outstanding photothermal properties (η = 75.64 %), high antibody coupling efficiency (96.31 %), and unrestricted immunorecognition affinity (Ka = 2.366 × 109 M−1), all of which are conducive to a highly sensitive dual-signal transduction mode. A colorimetric-photothermal dual-response immunoassay was constructed with AgPdCuHNs achieving colorimetric and photothermal detection limits of 0.071 and 0.018 ng mL−1 for Albendazole monitoring, which were approximately 4- and 15-fold lower than that of AuNPs-LFIA (0.279 ng mL−1), respectively. This study demonstrates the effectiveness of AgPdCuHNs-LFIA in establishing high-performance sensing and can be extended to a wide range of future point-of-care testing applications.

The overall performance of a novel semi-transparent photovoltaic window with passive radiative cooling coating – A comparative study

Semi-transparent photovoltaic (STPV) glazing is a promising building integrated photovoltaic (BIPV) technology for converting traditional windows into on-site energy-producing building components. Besides electricity generation, there is also an urgent demand to enhance the thermal management of STPV glazing. Passive radioactive cooling paint is an emerging nanomaterials technology that shows great potential to reduce the painted surface temperature. Aiming to further promote the PV window’s energy efficiency, this study designed and investigated a novel coated semi-transparent photovoltaic (CSTPV) glazing supplemented with highly transparent passive radiative cooling coating. In addition, the STPV/CSTPV’s impacts on indoor visual environments were investigated, especially on the rarely studied aspect of interior colour rendering performance.This paper employs a combination of numerical simulation and experimental measurements to comprehensively assess these innovative glass systems in terms of electricity generation, thermal performance, daylighting efficiency, and the impact of color on the indoor environment. The results indicate that the CSTPV windows can significantly reduce the heat gain rate by about 15 % and achieve excellent electricity generation, with an annual output approximately 3 % higher than that of STPV windows. Despite the radiative cooling coating, CSTPV glazing maintains a level of daylight illumination comparable to that of STPV glazing, with glare levels remaining within acceptable limits. Furthermore, the study emphasizes the effects of CSTPV and STPV on the indoor Color Rendering Index (CRI) and Correlated Color Temperature (CCT) performance. All samples measured have CCT values within the range of neutral light, and CRI values exceeding 96, demonstrating satisfactory high-quality indoor lighting conditions. This research shows that CSTPV and STPV glass technologies not only significantly enhance the energy efficiency of buildings but also provide a scientific foundation for sustainable development in architectural design.

Multifunctional Nanomaterials for Advancing Neural Interfaces: Recording, Stimulation, and Beyond.

ConspectusNeurotechnology has seen dramatic improvements in the last three decades. The major focus in the field has been to design electrical communication platforms with high spatial resolution, stability, and translatability for understanding and affecting neural pathways. The deployment of nanomaterials in bioelectronics has enhanced the capabilities of conventional approaches employing microelectrode arrays (MEAs) for electrical interfaces, allowing the construction of miniaturized, high-performance neuroelectronics (Garg, R.; et al. ACS Appl. Nano Mater. 2023, 6, 8495). While these advancements in the electrical neuronal interface have revolutionized neurotechnology both in scale and breadth, an in-depth understanding of neurons' interactions is challenging due to the complexity of the environments where the cells and tissues are laid. The activity of large, three-dimensional neuronal systems has proven difficult to accurately monitor and modulate, and chemical cell-cell communication is often completely neglected. Recent breakthroughs in nanotechnology have provided opportunities to use new nonelectric modes of communication with neurons and to significantly enhance electrical signal interface capabilities. The enhanced electrochemical activity and optical activity of nanomaterials owing to their nonbulk electronic properties and surface nanostructuring have seen extensive utilization. Nanomaterials' enhanced optical activity enables remote neural state modulation, whereas the defect-rich surfaces provide an enormous number of available electrocatalytic sites for neurochemical detection and electrochemical modulation of cell microenvironments through Faradaic processes. Such unique properties can allow multimodal neural interrogation toward generating closed-loop interfaces with access to more complete neural state descriptors. In this Account, we will review recent advances and our efforts spearheaded toward utilizing nanostructured electrodes for enhanced bidirectional interfaces with neurons, the application of unique hybrid nanomaterials for remote nongenetic optical stimulation of neurons, tunable nanomaterials for highly sensitive and selective neurotransmitter detection, and the utilization of nanomaterials as electrocatalysts toward electrochemically modulating cellular activity. We highlight applications of these technologies across cell types through nanomaterial engineering with a focus on multifunctional graphene nanostructures applied though several modes of neural modulation but also an exploration of broad material classes for maximizing the potency of closed-loop bioelectronics.

Electrochemical DNA biosensor for HPV-16 detection based on novel carbon quantum dots/APTES composite nanofilm

Detection of high-risk human papillomavirus (HR-HPV) is critical for early warning and accurate screening of cervical disease in women. Electrochemical biosensors offer a promising analytical strategy that can circumvent the structural complexity of traditional optical components found in current bioassays. In this work, an innovative electrochemical biosensor for HPV-16 detection was developed, utilizing advanced nanomaterial technology and optimized DNA probe grafting processes. The self-assembled composite nanofilm was optimized by conducting an orthogonal analysis. The nanofilm exploited the unique advantages and outstanding performance of (3-aminopropyl)triethoxysilane (APTES) and carbon quantum dots (CQDs), which act as a “molecular bridge” between the biosensing interface and the electrode substrate. The electroactive molecule [Ru(NH3)6]3+ facilitated the highly sensitive signaling of the target DNA by interacting with the double-stranded DNA. Under optimal conditions, the developed electrochemical DNA biosensor exhibited high sensitivity in detecting HPV-16, with a limit of detection (LOD) of 0.73 fM, which showed exceptional potential to be used in widespread point-of-care (PoC) screening programs, opening up new opportunities for various applications.

Site-Selective Growth of fcc-2H-fcc Copper on Unconventional Phase Metal Nanomaterials for Highly Efficient Tandem CO2 Electroreduction.

Copper (Cu) nanomaterials are a unique kind of electrocatalysts for high-value multi-carbon production in carbon dioxide reduction reaction (CO2RR), which holds enormous potential in attaining carbon neutrality. However, phase engineering of Cu nanomaterials remains challenging, especially for the construction of unconventional phase Cu-based asymmetric heteronanostructures. Here the site-selective growth of Cu on unusual phase gold (Au) nanorods, obtaining three kinds of heterophase fcc-2H-fcc Au-Cu heteronanostructures is reported. Significantly, the resultant fcc-2H-fcc Au-Cu Janus nanostructures (JNSs) break the symmetric growth mode of Cu on Au. In electrocatalytic CO2RR, the fcc-2H-fcc Au-Cu JNSs exhibit excellent performance in both H-type and flow cells, with Faradaic efficiencies of 55.5% and 84.3% for ethylene and multi-carbon products, respectively. In situ characterizations and theoretical calculations reveal the co-exposure of 2H-Au and 2H-Cu domains in Au-Cu JNSs diversifies the CO* adsorption configurations and promotes the CO* spillover and subsequent C-C coupling toward ethylene generation with reduced energy barriers.

Observation of 2D-magnesium-intercalated gallium nitride superlattices

Since the demonstration of p-type gallium nitride (GaN) through doping with substitutional magnesium (Mg) atoms1,2, rapid and comprehensive developments, such as blue light-emitting diodes, have considerably shaped our modern lives and contributed to a more carbon-neutral society3–5. However, the details of the interplay between GaN and Mg have remained largely unknown6–11. Here we observe that Mg-intercalated GaN superlattices can form spontaneously by annealing a metallic Mg film on GaN at atmospheric pressure. To our knowledge, this marks the first instance of a two-dimensional metal intercalated into a bulk semiconductor, with each Mg monolayer being intricately inserted between several monolayers of hexagonal GaN. Characterized as an interstitial intercalation, this process induces substantial uniaxial compressive strain perpendicular to the interstitial layers. Consequently, the GaN layers in the Mg-intercalated GaN superlattices exhibit an exceptional elastic strain exceeding −10% (equivalent to a stress of more than 20 GPa), among the highest recorded for thin-film materials12. The strain alters the electronic band structure and greatly enhances hole transport along the compression direction. Furthermore, the Mg sheets induce a unique periodic transition in GaN polarity, generating polarization-field-induced net charges. These characteristics offer fresh insights into semiconductor doping and conductivity enhancement, as well as into elastic strain engineering of nanomaterials and metal–semiconductor superlattices13.

Advances in well design and integrity: Areview of technological innovations and adaptive strategies for global oil recovery

Advances in well design and integrity are critical for enhancing global oil recovery rates. This review reviews technological innovations and adaptive strategies that drive efficiency and sustainability in oil production. The review discusses key themes such as reservoir characterization, wellbore stability, drilling fluids, and completion techniques. It highlights how these factors impact well integrity and production rates. The review emphasizes the importance of integrating innovative technologies and adaptive strategies to overcome challenges in complex reservoir environments. Key findings include the importance of reservoir characterization in designing wells that optimize recovery rates. It also highlights the role of wellbore stability in ensuring long-term integrity and reducing risks associated with drilling operations. The review discusses the advancements in drilling fluids, including the use of nanotechnology and biodegradable materials, to improve wellbore stability and minimize environmental impact. Additionally, the abstract explores advances in completion techniques, such as intelligent completions and sand control systems, to enhance production efficiency and reservoir management. It also discusses the integration of digital technologies, such as data analytics and artificial intelligence, to optimize well performance and reduce operational costs. The review concludes by highlighting the need for continued research and development to address the evolving challenges in global oil recovery. It emphasizes the importance of collaboration between industry stakeholders, research institutions, and regulatory bodies to drive innovation and ensure sustainable practices in oil production. Overall, the abstract provides a comprehensive overview of the technological innovations and adaptive strategies that are shaping the future of well design and integrity in the global oil industry. his review covers the evolution of well design practices, the application of new materials and technologies, and the strategic adaptations required to maintain operational safety and efficiency in diverse environmental conditions.

Bacterial imaging in tumour diagnosis.

Some bacteria, such as Escherichia coli (E. coli) and Salmonella typhimurium (S. typhimurium), have an inherent ability to locate solid tumours, making them a versatile platform that can be combined with other tools to improve the tumour diagnosis and treatment. In anti-cancer therapy, bacteria function by carrying drugs directly or expressing exogenous therapeutic genes. The application of bacterial imaging in tumour diagnosis, a novel and promising research area, can indeed provide dynamic and real-time monitoring in both pre-treatment assessment and post-treatment detection. Different imaging techniques, including optical technology, acoustic imaging, magnetic resonance imaging (MRI) and nuclear medicine imaging, allow us to observe and track tumour-associated bacteria. Optical imaging, including bioluminescence and fluorescence, provides high-sensitivity and high-resolution imaging. Acoustic imaging is a real-time and non-invasive imaging technique with good penetration depth and spatial resolution. MRI provides high spatial resolution and radiation-free imaging. Nuclear medicine imaging, including positron emission tomography (PET) and single photon emission computed tomography (SPECT) can provide information on the distribution and dynamics of bacterial population. Moreover, strategies of synthetic biology modification and nanomaterial engineering modification can improve the viability and localization ability of bacteria while maintaining their autonomy and vitality, thus aiding the visualization of gut bacteria. However, there are some challenges, such as the relatively low bacterial abundance and heterogeneously distribution within the tumour, the high dimensionality of spatial datasets and the limitations of imaging labeling tools. In summary, with the continuous development of imaging technology and nanotechnology, it is expected to further make in-depth study on tumour-associated bacteria and develop new bacterial imaging methods for tumour diagnosis.

Amorphization Activates Biocompatible MgAl‐Layered Double Hydroxide for Efficient Multiple Free Radical Scavenging

AbstractThe exploitation of effective and nontoxic materials with antioxidant activity to mitigate or inhibit the damage caused by elevated levels of free radicals has attracted considerable attention across diverse fields. Herein, this study demonstrates that a biocompatible MgAl‐layered double hydroxide (LDH) can be activated for multiple types of free radical scavenging with unexpected activity through amorphization (a‐MgAl‐LDH). Detailed characterization reveals that numerous oxygen defects are introduced after amorphization. Mechanistic studies and theoretical simulations indicate that amorphization‐induced oxygen defects in a‐MgAl‐LDH promote radical adsorption and reduce the reaction energy barriers, thereby resulting in enhanced radical scavenging activities. Consequently, a‐MgAl‐LDH demonstrated remarkable efficiency in mitigating the oxidative injury induced by Rosup in cells and provided thermal stabilization of polyvinyl chloride against degradation. This study demonstrates the transformation of inert MgAl‐LDH into a promising, nontoxic, and cost‐effective nano‐antioxidant option for antioxidative therapy or polymer stabilization and highlights the significance of crystallinity engineering of nanomaterials for efficient free radical scavenging.

Influence of chemical strains on the electrocaloric response, polarization morphology, tetragonality, and negative-capacitance effect of ferroelectric core-shell nanorods and nanowires

Using Landau-Ginzburg-Devonshire (LGD) approach, we proposed the analytical description of the influence of chemical strains on spontaneous polarization and the electrocaloric response in ferroelectric core-shell nanorods. We postulate that the nanorod core presents a defect-free single-crystalline ferroelectric material, and elastic defects are accumulated in the ultrathin shell, where they can induce tensile or compressive chemical strains. Finite-element modeling (FEM) based on the LGD approach reveals transitions of domain-structure morphology induced by chemical strains in the BaTiO3 nanorods. Namely, tensile chemical strains induce and support the single-domain state in the central part of the nanorod, while the curled domain structures appear near the unscreened or partially screened ends of the rod. The vortexlike domains propagate toward the central part of the rod and fill it entirely, when the rod is covered by a shell with compressive chemical strains above some critical value. The critical value depends on the nanorod sizes, aspect ratio, and screening conditions at its ends. Both analytical theory and FEM predict that the tensile chemical strains in the shell increase the nanorod polarization, lattice tetragonality, and electrocaloric response well above the values corresponding to the bulk material. The physical reason for the increase is strong electrostriction coupling between the mismatch-type elastic strains induced in the core by chemical strains in the shell. Comparison with earlier XRD data confirmed an increase of the tetragonality ratio in tensile BaTiO3 nanorods compared to the bulk material. Obtained analytical expressions, which are suitable for the description of strain-induced changes in a wide range of multiaxial ferroelectric core-shell nanorods and nanowires, can be useful for strain engineering of advanced ferroelectric nanomaterials for energy storage, harvesting, electrocaloric applications, and negative capacitance elements. Published by the American Physical Society 2024

Enzyme-free glucose detection via scalable and economical fabrication of nickel-polyvinylpyrrolidone-modified multi-walled carbon nanotubes

Development of accurate, reliable, and affordable glucose detection tools remains a top scientific priority. Nanotechnology and related materials are frequently utilized for this purpose. In this study, polyvinylpyrrolidone (PVP)-modified nickel (Ni) nanoparticles on multi-walled carbon nanotube (MWCNT) were prepared using a unique microwave synthesis technique. The synthesized particles were investigated by transmission electron microscopy (TEM), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). TEM analysis revealed that well-dispersed Ni nanoparticles with an average size of about 4.11 nm were uniformly dispersed on the MWCNT surface in the presence of PVP particles. The obtained NiPVP@MWCNT was used for the glucose sensor and its performance was investigated. According to the results, the limit of detection (LOD) and limit of quantification (LOQ) values for NiPVP@MWCNT nanocomposite in the linear range of 0.1 mM - 1 mM were calculated as 0.364 mM and 1.215 mM, respectively. As a result of the selectivity test, it was observed that it was highly selective for glucose and the current values increased with increasing concentration. The developed nanostructures are efficient, highly stable, discriminative, and sensitive and have the potential to be used as glucose sensors in the market.

Research of flexible sensor based on nanomaterial

Research of flexible sensor based on nanomaterial

Ru@Co3O4@g-C3N4 as a novel adsorbent for enhanced copper and cadmium abolition

Elimination of heavy metals from contaminated water systems is of prime distress due to their capacity to prompt toxic impact on the flora and fauna. The usage of innovative nano-engineered materials predominantly opens up smart prospects for the treatment of persistent heavy metal adulterated water resources. This study presents an ultrasonic-assisted sol-gel production of Ru@Co3O4@g-C3N4 nanostructure that was utilized to remove Cu+2 and Cd+2 ions from aqueous solutions. The X-ray diffraction investigation revealed the development of RuO2, Co2O3 and g-C3N4 phases, and the relevant elemental composition was verified by the photoelectron spectroscopy and EDX. The dispersion of the metal oxides within the nitride sheets was evidenced by scanning and transmission electron microscopy. The initial metal ions concentration, pH, and contact time effects were investigated through batch experiments. The adsorption isotherm models matched the Langmuir isotherm well, whereas the kinetics model data perfectly fitted the pseudo-second-order model. The maximum adsorption capacities of Cu+2 and Cd+2 ions on the nanocomposite Ru@Co3O4@g-C3N4 were 696.9 and 564.5 mg/g, respectively. A mechanism based on a viable covalent type of bonding developed by the delocalized -conjugated electrons of the triazine ring and functional groups were efficiently involved in the metal ions anchoring and ultimate elimination. Thus, the suitability of the Ru@Co3O4@g-C3N4 nanocomposite for eradicating heavy metals, including Cu+2 and Cd+2, was established.

Unsteady magnetohydrodynamic free convection and heat transfer flow of Al2O3‒Cu/water nanofluid over a non-linear stretching sheet in a porous medium

This article investigates the impact of time-dependent magnetohydrodynamics free convection flow of a nanofluid over a non-linear stretching sheet immersed in a porous medium. The combination of water as a base fluid and two different types of nanoparticles, namely aluminum oxide (Al2O3) and copper (Cu) is taken into account. The impacts of thermal radiation, viscous dissipation and heat source/sink are examined. The governing coupled non-linear partial differential equations are reduced to ordinary differential equations using suitable similarity transformations. The solutions of the prin-cipal equations are computed in closed form by applying the MATLAB bvp4c method. The velocity and temperature pro-files, as well as the skin friction coefficient and Nusselt number, are discussed through graphs and tables for various flow parameters. The current simulations are suitable for the thermal flow processing of magnetic nanomaterials in the chemical engineering and metallurgy industries. From the results, it is noticed that the results of copper nanofluid have a better impact than those of aluminium nanofluid.

Facile fabrication of pesticide nanocapsules using cinnamaldehyde derived imide polymer as wall material for pH-responsive and ultraviolet shielding properties

The low utilization efficiency of pesticides poses a significant challenge to the sustainable development of agriculture. The nanocapsule-based pesticide delivery systems combine the advantages of nanotechnology and advanced materials to achieve on-demand and accurately targeted release. Herein, a facile and universal strategy was used to fabricate photosensitive pesticide nanocapsules using a versatile imine polymer derived from cinnamaldehyde (CIN) and ε-poly-L-lysine (PLL). Characterization results demonstrated that the nanocapsules prepared under optimal conditions exhibited uniform sizes (200–400 nm) and high encapsulation efficiency (>90 %). Photodegradation experiments revealed a significant increase of half-lives (7.21–55.57 times) under UV irradiation for the different pesticide nanocapsules. Furthermore, the pesticide nanocapsules demonstrated a high biological activity and excellent physicochemical properties, including pH-responsive release, maximum retention, and rain erosion resistance. The results of the mechanistic studies on the increased biological activity indicated that the nanocapsules could be adsorbed on the surface of target pathogenic cells and then released CIN and PLL, destroying the integrity of the cell membrane, and synergistically and effectively eradicating the pathogen with pesticide. Additionally, nanocapsules exhibited lower toxicity to zebrafish and genetic toxicity to Vicia faba than pesticide technical. Therefore, stimuli-responsive nanocapsules based on imide polymer have broad application prospects in the field of pesticides.

The effect of nano engineered material (NEM) in enhancing the engineering properties of ultra high-performance concrete (UHPC)

The effect of nano engineered material (NEM) in enhancing the engineering properties of ultra high-performance concrete (UHPC)

Strain Engineering of Unconventional Crystal-Phase Noble Metal Nanocatalysts.

The crystal phase, alongside the composition, morphology, architecture, facet, size, and dimensionality, has been recognized as a critical factor influencing the properties of noble metal nanomaterials in various applications. In particular, unconventional crystal phases can potentially enable fascinating properties in noble metal nanomaterials. Recent years have witnessed notable advances in the phase engineering of nanomaterials (PEN). Within the accessible strategies for phase engineering, the effect of strain cannot be ignored because strain can act not only as the driving force of phase transition but also as the origin of the diverse physicochemical properties of the unconventional crystal phase. In this review, we highlight the development of unconventional crystal-phase noble metal nanomaterials within strain engineering. We begin with a short introduction of the unconventional crystal phase and strain effect in noble metal nanomaterials. Next, the correlations of the structure and performance of strain-engineered unconventional crystal-phase noble metal nanomaterials in electrocatalysis are highlighted, as well as the phase transitions of noble metal nanomaterials induced by the strain effect. Lastly, the challenges and opportunities within this rapidly developing field (i.e., the strain engineering of unconventional crystal-phase noble metal nanocatalysts) are discussed.

High-temperature stability of ambient-cured one-part alkali-activated materials incorporating graphene nanoplatelets for thermal energy storage

This study aims to develop an ambient-cured nano-engineered one-part alkali-activated materials with excellent thermal characteristics using graphene nanoplatelets (GNPs) and ternary precursors. Their compressive strength, thermal properties, microstructure, pore structure were characterised through visual observation, isothermal calorimetry, TGA, XRD, SEM/EDS and X-ray μCT after high temperature exposure to 200–800 °C. The research findings indicated high strength characteristics of the developed AAM (∼80 MPa) at ambient condition, which could further reach to approx. 100 MPa after being heated up to 400 °C. GNPs provided nucleation effects for promoting geopolymerisation and crystallisation. As observed from X-ray CT, a high extent of severe cracks initiated from the core and propagated towards the surface. From SEM/EDS analysis, high Na/Al and Na/Si ratios or low Si/Al and Ca/Si ratios highly correlated to thermal stability. Overall, the research outcomes implied the promising use of the nano-engineered AAMs for thermal energy storage (TES) at 400 °C.

Pesticide loaded nanohydrogel based on attapulgite and gelatin with improved foliar adhesion.

Pesticides have been widely applied to promote plant growth due to their high insecticidal efficiency. However, most pesticides easily slip from the leaf surface due to the low foliar adhesion, leading to significant damage to the environment and human health. Increasing foliar adhesion of pesticides has been a major challenge. Nanomaterial technology, which can deliver pesticide active ingredients, offers a new opportunity to increase pesticides efficacy with higher foliar adhesion. In this study, we prepared the pesticide loaded nanohydrogel ALP@Ge-g-P(AA-co-AM)/ATP by grafting attapulgite and gelatin onto P(AA-co-AM), and loading the pesticide alphacypermethrin synchronously via the emulsion solvent evaporation method. The size of the new nanohydrogel was 20.5 nm and the pesticide loading capacity was 21.5%. Compared to P(AA-co-AM), the water absorbency of Ge-g-P(AA-co-AM)/ATP increased by 54.3% in 120 min, while the water retention increased from 4.27% to 38.7% after 48 h. Washout experiments and contact angle results suggested that the nanohydrogel, with a contact angle of 44.8° indicating good wettability, can resist rain flush and increase foliar adhesion naturally. Overall, the preparation of pesticide loaded nanohydrogel is simple. Experiments demonstrated the pesticide loaded nanohydrogel has high efficiency and strong foliar adhesion. This makes it a promising candidate for spraying application and reducing pollution levels. © 2024 Society of Chemical Industry.