Flower-like MoS2 Research Articles

A novel strategy to extend near-infrared light harvest of graphene for solar vapor generation and high-efficiency oil-water separation

Due to the feature of zero bandgap, graphene has presented a rapid and broadband photothermal responsibility. However, the near-infrared light absorption of graphene is relatively low, which is unfavourable for the full utilization of solar energy. Therefore, in our work, flower-like MoS2 nanostructure was used to promote the optical absorption of graphene. Further, combining with the porous skeleton of sugarcane residues and the simplified hydrophobic treatment method, a novel water treatment material (GNS@MoS2-SR) is successfully prepared. Recently, solar-assisted oily water treatment and solar steam generation were widely proposed to relieve the shortage of clean water. In the absorption test, it is confirmed that GNS@MoS2-SR can absorb 8.02–16.8 g/g oils from oil-water mixture and presents high stability during recycle. Moreover, the great hydrophobicity and photothermal conversion effect helps GNS@MoS2-SR to evaporate ∼1.778 kg/m2 water in 1 h, under one solar illumination (1 kW/m2). Besides, the optimized hydrophobicity of GNS@MoS2-SR effectively suppressed the salt precipitation and prevented the decline of spectrum absorption. The multifunctional water treatment material we designed integrates the respective advantages of graphene and MoS2, presents a significant potential in relieving water stress.

Infrared-light-driven self-healing MoS2/polyvinyl alcohol hydrogel with simultaneous enhancement of strength and ductility

Self-healing hydrogels exhibit special self-healing or self-recovery function like human skin after injuring, thereafter, draw lots of attention in biomedical applications. However, self-healing hydrogels with strong mechanical and rapid self-healing properties are not fully realized. MoS 2 /polyvinyl alcohol (PVA) hydrogels are developed to achieve rapid self-healing function by utilizing the excellent photothermal conversion effect of MoS 2 under near-infrared (NIR) light. Effects of microstructure and content of MoS 2 on self-healing and mechanical properties of MoS 2 /PVA hydrogels are investigated, including flower-like MoS 2 spheres by bottom-up hydrothermal reaction and MoS 2 sheets by liquid-phase stripping method. The MoS 2 /PVA hydrogels embodied with the two types of MoS 2 were produced by simple freezing/thawing method, and exhibited rapid self-healing function, together with simultaneous enhancement of strength and ductility. The MoS 2 /PVA hydrogel modified by flower-like MoS 2 spheres with a content of 0.5 wt% presents a significant self-healing function with a healing efficiency up to 90.0% within 5 min, and an enhancement of tensile strength of 9.1 MPa (190% to blank PVA) and a ductility of 162.5% (290% to blank PVA). Furthermore, the MoS 2 /PVA gel with flower-like MoS 2 spheres into the PVA networks produces a significant enhancement of fracture strength (58.4 MPa) after fully curing, characterized by an increases of 612% compared with the pure PVA. The photo-induced self-healing and strengthening effects of the MoS 2 /PVA hydrogels are discussed. • A rapid self-healing MoS 2 /PVA hydrogels is developed under near-infrared light. • Photo-thermal conversion effect of MoS 2 produces the self-healing property. • Flower-like MoS 2 spheres exhibit better healing efficiency than MoS 2 sheets. • MoS 2 /PVA hydrogels present a simultaneous increase of strength and plasticity. • 2D and 3D strengthening effects of the MoS 2 /PVA composites are discussed.

Modulation of MoSe2 & MnFe2O4@MnO2 nano-architectures for microwave absorption properties via single- and bilayer method

The electromagnetic pollution problem, particularly at microwave frequencies, poses a threat to not only sensitive technological gadgets but also to the health of humans. Therefore, there is a great need for lightweight and highly effective microwave-absorbing materials (MAMs). Here, we fabricated a hierarchical flower-like MoSe2 structure and a rod-like MnFe2O4@MnO2 architecture via a solvothermal method. Single-layer and bilayer samples were fabricated to study the microwave absorption feature. In single-layer samples, the flower-like MoSe2 structure has better microwave absorption properties than the rod-like MnFe2O4@MnO2 architecture. And in bilayer absorbing samples, a sample with a flower-like MoSe2 structure as the top layer shows high absorption performance. Moreover, in bilayer samples, changes were made to the thickness of both layers to find the best parameters. An optimal bilayer sample has been achieved with a flower-like dielectric MoSe2 structure as a top layer having a 1 mm thickness and magnetic MnFe2O4@MnO2 as a bottom layer also with a 1 mm thickness; indicating that a strong absorption can only be attained by balancing dielectric loss and magnetic loss. Moreover, the optimal sample shows decent absorption with an effective absorption bandwidth (EAB) of 5.4 GHz (14.7–9.3 GHz) with a 1 mm thickness of each layer. The simulated results of the optimal sample have also been compared with experimental results. These results suggest a different approach for developing MAMs in the future.

Fabrication of 3D self-supported MoS2-Co-P/nickel foam electrode for adsorption-electrochemical removal of Cr(Ⅵ).

Electrochemistry is considered to be one of the most efficient and environment-friendly methods for removing highly toxic Cr (Ⅵ). In this study, a 3D self-supported MoS2-Co-P/nickel foam (NF) electrode was prepared via a calcination-hydrothermal process to remove the Cr (Ⅵ) in aqueous medium. Scanning electron microscope (SEM) analysis indicated that the pine-needle-like Co2P nanoneedle and flower-like MoS2 nanosheets were successfully loaded on the three-dimensional (3D) framework of NF, which provided abundant active sites. The electrode modified by Co, P and MoS2 exhibited high removal efficiency of Cr (Ⅵ) (96.9%) at pH 3.0, current of 0.128mA and voltage of 2.5V. Co, P and MoS2 have the synergistic promotion on the catalytic performance of electrodes, and the reduction efficiency of Cr (Ⅵ) was greatly improved by 127.5 times relative to pure NF. The enhanced removal of Cr (Ⅵ) was related to the coupling effect of adsorption and electrocatalytic reduction. The mechanism study indicated that electron (e-) is the active species of Cr (Ⅵ) reduction. The Cr (Ⅵ) removal rate was maintained at 90±1% after five successive cycle experiments, demonstrating good stability and potential industrial applications of MoS2-Co-P/NF.

Synthesis and tribological properties of MXene/TiO2/MoS2 nanocomposite

In this work, novel MXene/TiO2/MoS2 heterojunction of flower-like MoS2 decorated sheet-like MXenes were successfully fabricated by one-step hydrothermal approach using TiO2 as the precursor, and systematically investigated by a series of characterizations (e.g. XRD, Raman, SEM, and TEM analysis). Furthermore, the tribological behaviour of MXene/TiO2/MoS2 heterojunction in liquid paraffin were extensively examined a ball-on-disk tribometer. The effects of applied load and rotational speed were also investigated. Compared with MXenes/MoS2 nanocomposites, three-phase MXene/TiO2/MoS2 achieved better friction properties. Especially, when the mass ratio of MTM in base oil is 3wt%, the friction coefficient reaches the minimum value of 0.09. Additionally, the construction and excellent tribological properties of MXene/TiO2/MoS2 heterojunction would be beneficial for the design of novel nano-additives with 2D/2D structure for enhancing friction reduction and anti-wear, which also would expand their actual applications in the industry and agriculture

Construction and tribological properties of 2D heterojunction of g-C3N4/MoS2 nanocomposites

2D/2D heterojunction of flower-like MoS2 nanosheets anchored on g-C3N4 was fabricated through a facile hybridization approach, and systematically investigated by various characterization methods (e.g. XRD, SEM, TEM and XPS analysis). Furthermore, tribological properties of g-C3N4/MoS2 composites containing with liquid paraffin were comparatively measured by UMT-2 multispecimen friction and wear tester, and various tribological variables including additive concentration, applied load and rotational speed were also investigated in details. Among all samples, 2%-g-C3N4/MoS2 composites exhibit the minimal friction coefficient (~0.08), and the anti-wear performance is improved obviously. The improvement of tribological properties of the base oil is due to the synergistic effect of g-C3N4 and ultra-thin molybdenum disulfide nanosheets. This study provides a new idea for the design of two-dimensional layered composites with enhanced tribological properties of lubricating oil and matrix.

Highly sensitive hierarchical MoS2 nanoflowers for in-situ soil moisture sensing

In this work, we explored hierarchical MoS2 nanomaterials for soil moisture sensing (SMS) and tested their efficacy considering the operational aspects of the sensor. Carnation and marigold flower-like MoS2 nanostructures were prepared via facile hydrothermal processes with varying synthesis temperatures. The synthesized MoS2 nanostructures were well characterized by XRD, FTIR, FESEM, EDS, and HRTEM and it is evident that the variation in the hydrothermal temperatures has a significant impact on the crystallinity, morphology, stoichiometry, dimensions, and lattice spacing. We found that hierarchical MoS2 marigold flower-like nanostructures offer the highest sensitivity of about 2000 %, when gravimetric water content (GWC) is varied from 1 % to 20 % GWC, which is one of the highest reported SMS. The sensors exhibit hysteresis of about ± 4 % and response times of about 500 s. They were highly selective to moisture compared to the other salts like Na, K, Cd, and Cu present in the soil. The sensors were also unaffected by changing temperatures with a small 2–4 % between 20 °C and 65 °C.

Flower-like MoS2 self-assembled on multiferroic Z-type Sr3Co2Fe24O41 hexaferrite for ultra-wideband microwave absorption

In this work, a rare system of Sr3Co2Fe24O41/MoS2 composites has been successfully prepared via the sol-gel method and following a facile hydrothermal process, from which the flower-like MoS2 was evenly anchored on the surface of Z-type Sr3Co2Fe24O41 microplatelets. It is confirmed that the effective combination of transition metal sulfide MoS2 and multiferroic Sr3Co2Fe24O41 hexaferrite greatly optimizes the dielectric behaviors of the composites. Meanwhile, the unique hierarchical structure further enhances the microwave absorption properties. When the mass ratio of Sr3Co2Fe24O41 to MoS2 is 1:3 in composites, the smallest reflection loss value is − 39.2 dB at the thickness of 2.0 mm, and note that the adequate absorption bandwidth can reach up to 7.6 GHz (10–17.6 GHz) with 2.2 mm. When the mass ratio is adjusted as 1:5, the optimal reflection loss of the composite reaches − 44.5 dB at 9.28 GHz with a thickness of 3.0 mm. The high-efficiency microwave absorption performance of the composites is attributed to the synergistic effect of dielectric materials and multiferroic materials. The calculation results on delta and attenuation constant display that impedance matching degree and attenuation ability of composites are balanced, which not only reduces the reflection of electromagnetic waves on the absorber surface, but also enhances its consumption. At the same time, the flower-shaped MoS2 is stacked on the surface of Sr3Co2Fe24O41 microplatelets which is conductive to the multiple reflections and scattering of electromagnetic waves between layers, greatly promoting the attenuation of electromagnetic waves. This work opens up an updated pathway for the design of magnetic/dielectric microwave absorbers with vigorous absorption and ultra-wideband.

Hollow core–shell structure Co/C@MoSe2 composites for high-performance microwave absorption

To address an increasingly serious electromagnetic radiation problem and the urgent need to develop lightweight, high-efficiency, and strong-attenuation electromagnetic wave absorbing (EMA) materials, a hollow core–shell Co/C@MoSe2 composite structure was prepared. Flower-like MoSe2 was wrapped around the surface of Co/C composites after a hydrothermal reaction. The introduction of MoSe2 and the designed hollow core–shell structure was beneficial for optimizing the electromagnetic characteristics of the composites. Owing to the magnetism of Co/C composites after high-temperature treatment, the composite materials were capable of magnetic dissipation. The introduced multiple-attenuation mechanisms, such as dielectric loss, magnetic loss, and conductive loss, contributed greatly to the incident electromagnetic wave attenuation. Among them, Co/C@MoSe2-4 exhibited excellent electromagnetic wave absorption performance. When the matching thickness was 2.5 mm, the minimum reflection loss was −42 dB, and the effective absorption bandwidth was 5.1 GHz. This work provided a smart strategy for electromagnetic wave absorbers designing and commerical application.

Architectures of flower-like MoS2 nanosheet coated N-doped carbon sphere electrode materials for enhanced capacitive deionization

The development of promising nanomaterials for capacitive deionization (CDI) is an emerging energy-efficient technology for water recovery and purification. Herein, the nanoarchitecture of deposition of molybdenum disulfide nanosheets onto N-doped carbon sphere (MoS2@NCS) has been successfully developed using hydrothermal processes for CDI applications. The morphological and fine structural analyses clearly indicate that the hexagonal structure of MoS2 nanosheets are homogeneously dispersed onto the 300-nm NCS to form the flower-like MoS2@NCS heterostructure. After calcination for 2 h at 800 °C, the MoS2@NCS exhibits a large specific surface area of 82 m2 g−1 and interconnected meso-macroporous channels for rapid ion and electron transfer, resulting in the superior electrochemical behaviors with the specific capacitance of 340 F g−1 at 5 A g−1 in 1 M Na2SO4 solution. Moreover, the electrosorption performance of MoS2@NCS-800 was investigated under different conditions in terms of initial NaCl concentration and voltage, and the superior specific electrosorption capacity of 59.9 mg g−1 is obtained at 2000 mg L−1 NaCl and applied voltage of 1.4 V. The experimental data is then well-fitted with the modified Donnan model, signifying that the electrosorption performance is highly dependent on the formation of electrical double layers and homogeneous potential distribution throughout the diffuse layer of the porous electrodes. The excellent cyclic durability of MoS2@NCS electrode is also highlighted after 100 electrosorption-desorption cycles. These results elaborate that MoS2@NCS composites are promising electrochemical materials for CDI application, which can open a pathway to design the 2D/3D hybrid nanoarchitectures as a highly potential material for green and sustainable water purification and ion removal in grey and salty waters.

Flower-like molybdenum disulfide for efficient hydrogen and oxygen evolution reaction

Substantial research work has been demonstrated that molybdenum disulfide-based catalysts have exceptional performance in hydrogen evolution reaction (HER), while very few research has been conducted on the oxygen evolution reaction (OER). Here we synthesized flower-like molybdenum disulfide (syn-MoS2) by using hydrothermal method for enhanced bifunctional HER and OER activity. It exhibits low overpotential of −170 mV at −10 mA/cm2 for HER and 240 mV at 10 mA/cm2 for OER with Tafel slope of 99 and 119 mV/dec, respectively. The improved performance is attributed to the fact that the expanded electrochemical active surface area of MoS2 can offer abundant exposed active sites and increase electrochemical conductivity for HER and OER. This work emphasizes a controllable one-step hydrothermal method for easy synthesis and design of flower-like MoS2, highly beneficial material for applications of clean and green energy conversion that can be optimize strategies of two-dimensional materials.

Adsorption of Methylene Blue on Azo Dye Wastewater by Molybdenum Disulfide Nanomaterials

In this study, flower-like MoS2 nanomaterials were synthesized by hydrothermal method with excess thiourea. The adsorption performance of MoS2 adsorbent for methylene blue (MB) in azo dye wastewater was studied. The morphology, crystal phase, and microstructure of nano MoS2 samples were characterized by X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy, and Fourier transform infrared spectroscopy. The effects of adsorption isotherm, kinetics, different hydrothermal time, and pH on the adsorption experiment were studied. The results showed that the MoS2 adsorbent with a hydrothermal time of 1 h had good adsorption properties for MB. The adsorption data accord with the Langmuir isotherm model, and the maximum adsorption capacity of MoS2 adsorbent is 200 mg/g, and the adsorption kinetics agrees well with the pseudo two-level model. The removal rate of MB is not significantly affected by the pH values. The large pH range can still maintain the removal rate above 93.47%, and the regeneration and recovery properties of MoS2 were also explored. Finally, the adsorption mechanism of MoS2 on MB is discussed.

Constructing MoSe2/MoS2 and MoS2/MoSe2 inner and outer-interchangeable flower-like heterojunctions: A combined strategy of interface polarization and morphology configuration to optimize microwave absorption performance

Interfacial polarization and geometrical morphology play a significant role in the attenuation of electromagnetic (EM) wave. Herein, the two-dimensional (2D)/2D heterojunction with flower-like geometrical morphology is proposed and produced, which may simultaneously provide a large contact area for achieving strong interfacial polarization and activates more sites for the possible multiple EM wave reflection and scattering. By adopting a simple two-step hydrothermal method, MoSe2/MoS2and MoS2/MoSe2 inner and outer-interchangeable heterojunctions consisting of 2D MoSe2 and MoS2 nanosheets with flower-like geometrical morphology were successfully synthesized. The results revealed that the hydrothermal temperatures significantly impacted the flower-like geometrical morphology and MoS2 content. By optimizing the microstructures, the designed MoSe2/MoS2 and MoS2/MoSe2 heterojunctions presented enhanced comprehensive EM wave absorption properties (EMWAPs), possessing strong absorption capability, wide absorption bandwidth and thin matching thicknesses. Generally, this work demonstrates that the optimized EMWAPs of designed heterojunctions mainly originate from the special interfaces and morphology configuration, which also paves a new way for the designing and synthesis of transition metal dichalcogenides-based heterojunction as a novel and desirable candidate for high-performance microwave absorbers.

Controlled decoration of nanoceria on the surface of MoS2 nanoflowers to improve the biodegradability and biocompatibility in Drosophila melanogaster model

In recent years, nanozymes based on two-dimensional (2D) nanomaterials have been receiving great interest for cancer photothermal therapy. 2D materials decorated with nanoparticles (NPs) on their surface are advantageous over conventional NPs and 2D material based systems because of their ability to synergistically improve the unique properties of both NPs and 2D materials. In this work, we report a nanozyme based on flower-like MoS2 nanoflakes (NFs) by decorating their flower petals with NCeO2 using polyethylenimine (PEI) as a linker molecule. A detailed investigation on toxicity, biocompatibility and degradation behavior of fabricated nanozymes in wild-type Drosophila melanogaster model revealed that there were no significant effects on the larval size, morphology, larval length, breadth and no time delay in changing larvae to the third instar stage at 7–10 d for MoS2 NFs before and after NCeO2 decoration. The muscle contraction and locomotion behavior of third instar larvae exhibited high distance coverage for NCeO2 decorated MoS2 NFs when compared to bare MoS2 NFs and control groups. Notably, the MoS2 and NCeO2-PEI-MoS2 NFs treated groups at 100 μg ml−1 covered a distance of 38.2 mm (19.4% increase when compared with control) and 49.88 mm (no change when compared with control), respectively. High-resolution transmission electron microscopy investigations on the new born fly gut showed that the NCeO2 decoration improved the degradation rate of MoS2 NFs. Hence, nanozymes reported here have huge potential in various fields ranging from biosensing, cancer therapy and theranostics to tissue engineering and the treatment of Alzheimer’s disease and retinal therapy.

Hydrothermal synthesis of MXene-MoS2 composites for highly efficient removal of pesticides

Ti3C2 is regarded as the most popular MXene, which has been extensively investigated as a candidate for fabrication of adsorbents to remove environmental pollutants. However, the adsorption capacity of unmodified MXene is limited owing to the lack of specific adsorption sites. In this work, we reported a simple hydrothermal method for preparation of Ti3C2-MoS2 composites and examined their adsorption removal of organic pesticide paraquat (PQ) for the first time. The adsorption equilibrium will reach within 30 min and the adsorption capacity was increased from 8.7 mg/g to 105.53 mg/g as compared with that of Ti3C2. The adsorption process is more inclined to follow the Freundlich isotherm model and quasi-second-order kinetic model, which points to that the adsorption process is multilayer adsorption and may followed both physical adsorption and chemical adsorption. Adsorption of PQ on Ti3C2-MoS2 is a spontaneous exothermic process and many factors, such as temperature, pH values, and ion strength can influence the adsorption performance. The obvious increase of adsorption performance of Ti3C2-MoS2 might be ascribed to the increase of specific surface area after the introduction of flower-like MoS2. More than that, PQ also might be catalytically degraded by Ti3C2-MoS2 for its semiconductor property.

Coordinative sulfur site over flower-structured MoS2 for efficient elemental mercury uptake from coal-fired flue gas

Metal sulfides have recently been considered as promising options for mercury removal owing to their large number of active sulfur sites, environmental friendliness, morphological diversity, resistance to high concentrations of sulfur dioxide, high activity and low cost. Herein, due to the strong affinity between Hg and S, MoS2 was selected to adsorb Hg0 from coal-fired flue gas in power plants. The mercury removal experiments indicate that compared with ZnS, CuS and SnS, MoS2 has the strongest ability to remove elemental mercury. The effects of different adsorption temperatures and different gas components (O2, NO, SO2) and other reaction conditions on the removal performance of Hg0 were further discussed. It was found that the presence of O2, NO or SO2 had no significant effect on the removal of Hg0 by MoS2. Thanks to the abundant edge unsaturated sulfur sites, the flower-like MoS2 not only exhibits good sulfur resistance, but also has excellent long-term stable properties. The equilibrium adsorption capacity of MoS2 is 54.308 mg g−1, and the initial adsorption rate is 66.79 μg g−1 min−1. It is better than most metal sulfide adsorbents, in which the equilibrium adsorption capacity is 24 times that of sulfur modified activated carbon (S-AC), and the initial adsorption rate is 133 times that of S-AC. Moreover, density functional theory (DFT) calculations proved that elemental mercury was chemically adsorbed on surface of MoS2 nanosheets, forming stable HgS. This work can promote the proper design and innovation of adsorbent materials and achieve fruitful treatment of environmental pollutants.

Exploring the effect of hydrothermal precursor pH on the photosensitivity of 1T/2H–MoS2 nanosheets

In this investigation, MoS2 nanosheets were synthesized via the hydrothermal method. The effects of precursor pH on the properties of as-synthesized MoS2 nanostructures have been investigated. Different techniques were employed to determine the structural, optical, and morphological characteristics of the synthesized nanopowders. X-ray diffraction (XRD) pattern analysis confirmed the formation of a polycrystalline hexagonal MoS2 structure. Raman spectra revealed the coexistence of trigonal (1T) and hexagonal (2H) polytypes of MoS2. Images of scanning electron microscopy (SEM) revealed that the obtained flower-like MoS2 powders have composed of nanosheets, where the sheet's thickness varies from 7 to 25 nm, depending on the pH value of the hydrothermal precursor solution. Increasing the pH prevents the aggregation of active points and causes the formation of thinner nanosheets. Optical spectroscopy showed the absorption of the incident radiation in the visible region. The energy bandgap of samples was estimated to be in the range of 1.46–1.82 eV by increasing the precursor pH value from 5.5 to 9.5, respectively. The photosensitivity measurements verified that the as-grown MoS2 nanopowders respond rapidly toward the incident light with a wavelength of 450 nm and show good response stability. The sample prepared in the basic environment of precursor (pH value of 9.5) showed the most stable response transient with the photo-response value of 16.72%.

Optical, electromagnetic and physiochemical properties of flower-like MoS2 (D) and Ni microsphere (M) based absorbers for X and Ku band applications

Currently, absorbing materials with thin thickness, lightweight, and strong absorption are required to reduce electromagnetic pollution. Flower-like MoS2 (D) and Ni microsphere (M) with MoS2 (D/M) absorbers were successfully fabricated via hydrothermal and solvothermal methods. Structural, physiochemical, elemental, and magneto-optical studies of the D and D/M samples were evaluated. The bandgap for M, D, and D/M composite is 2.56 eV, 3.1 eV, and 3.7 eV respectively. Morphological studies confirm the shape of the Ni microsphere and flower-like structure of the MoS2 composite. D and D/M composite show synergistic performance in terms of effective bandwidth, absorption, and reflection loss. The RL from D is −24.5 dB for 1.5 mm thickness whereas the D/M sample shows −9 dB at 2.5 mm thickness. Double layer absorbers of D and D/M were simulated using CST software. The lower/upper layer of D and D/M with 1.5 mm lower and 0.5 mm upper layers’ arrangement depicted minimum reflection loss and depicted their use for Ku band application. Therefore, D and D/M composites with thin thickness and minimum reflection loss might be suggested for application in microwave absorption.

One-step hydrothermal synthesis of MoS2 nano-flowers CoS2 square composites electrode materials for supercapacitor application

Developing efficient materials for generating and storing renewable energy is now a pressing test for future energy demand. The advent of (2D) two-dimensional materials has attracted much research interest as electrode materials for supercapacitors due to their intriguing mechanical and electrochemical properties. This report used a facile one-step hydrothermal process to synthesize MoS2@CoS2 Composite as electrode materials for supercapacitors with good energy storage performance and explore energy generation and storage applications. The structure and morphology were investigated by X-ray diffraction pattern, field emission scanning electron microscope consisting of square-shaped CoS2 and flower-like MoS2, and characterization; meanwhile, their electrochemical properties were evaluated by CV, GCD, and EIS measurements. The electrochemical performance of symmetric MoS2@CoS2 binary Composite was examined in 1 M H2SO4 in a two-electrode assembly. The as-prepared MoS2@CoS2 electrode exhibited a specific capacitance of 199F/g at a current density of 2A/g, while its counterpart MoS2 electrode exhibited only 127F/g at 2 A/g current density. The MoS2@CoS2 composite attains specific energy and power densities of 27.74 WhKg−1 and 494.46 Wkg−1, respectively, due to the unique morphology of the MoS2-flowery shape and CoS2 square. CoS2 squares effectively prevent the agglomeration and restacking of MoS2 sheets, facilitating smother ion dynamics. Technological demonstration of MoS2@CoS2 cell is presented by illuminating commercially available light-emitting diode for more than 3 min.

Nano-Striped Polyamide Membranes Enabled by Vacuum-Assisted Incorporation of Hierarchical Flower-Like Mos2 for Enhanced Nanofiltration Performance

Nano-Striped Polyamide Membranes Enabled by Vacuum-Assisted Incorporation of Hierarchical Flower-Like Mos2 for Enhanced Nanofiltration Performance