Formation Mechanism Of Nanoparticles Research Articles

Size-controlled synthesis of copper oxide nanoparticles with a supercritical hydrothermal synthesis method

Supercritical hydrothermal synthesis (SCHS) is a promising technique for the preparation of copper oxide nanoparticles with fast reaction rate, green efficiency and low cost. In this paper, nanoparticles of copper oxide ranging from 53.0 to 94.0 nm were synthesized by supercritical hydrothermal method. The effects of different precursor concentrations, alkali addition, reaction pressure, reaction temperature and reaction time on the particle size, morphology and particle uniformity of copper oxide nanoparticles were also investigated, and the mechanism of each parameter was analyzed. The growth kinetic equation of copper oxide nanoparticles under supercritical hydrothermal conditions was established by analyzing the influence laws of temperature and reaction time on the grain size of the products. Further, the growth activation energy and the growth mechanism controlled by the grain surface process was obtained. The formation mechanism of copper oxide nanoparticles in rod form was analyzed by TEM results.

Preparation of indapamide-HP-β-CD and indapamide-PVP nanoparticles by supercritical antisolvent technology: Experimental and DPD simulations

The poor aqueous solubility of indapamide (INP) limits its applicability in various biomedical applications. To overcome this issue, nanosized INP particles (INP-HP-β-CD NPs and INP-PVP-K30 NPs) were fabricated using the supercritical antisolvent (SAS) approach to improve the bioavailability of INP. The process, formula, and supercritical antisolvent process were optimized using single-factor and orthogonal methods. The tiny INP-HP-β-CD NPs with a particle size of 142.5 nm and INP-PVP-K30 NPs with a particle size of 150.4 nm were obtained under optimum conditions. Further analysis and characterization, such as SEM, FTIR, XRD, DSC, 1H NMR, and dissipative particle dynamics (DPD) simulations, were carried out to verify the formation mechanism of the INP complex nanoparticles. The altered physical state of INP from crystalline to amorphous loaded onto the polymer resulted in a significant improvement in the solubility and dissolution rate and high biocompatibility with cells compared to raw INP. Therefore, we propose that INP nanoparticles processed by a supercritical antisolvent process can be used as an advanced drug delivery system, especially for insoluble drugs.

Synthesis of Gold Clusters and Nanoparticles Using Cinnamon Extract-A Mechanism and Kinetics Study.

In this work, UV-Vis spectrophotometry, High Resolution Scanning Transmission Electron Microscopes and selected experimental conditions were used to screen the colloidal system. The obtained results complement the established knowledge regarding the mechanism of nanoparticle formation. The process of gold nanoparticles formation involves a two-step reduction of Au ions to Au(0); atom association and metastable cluster formation; autocatalytic cluster growth; ultra-small particle formation (1-2 nm, in diameter); particle growth and larger particles formation; and further autocatalytic crystal growth (D > 100 nm). As a reductant of Au(III) ions, a cinnamon extract was used. It was confirmed that eugenol as one of the cinnamon extract compounds is responsible for fast Au(III) ion reduction, whereas cinnamaldehyde acts as a gold-particle stabilizer. Spectrophotometry studies were carried out to track kinetic traces of gold nanoparticle (D > 2 nm) formation in the colloidal solution. Using the Watzky-Finke model, the rate constants of nucleation and autocatalytic growth were determined. Moreover, the values of energy, enthalpy and entropy of activation for stages related to the process of nanoparticle formation (Index 1 relates to nucleation, and Index 2 relates to the growth) were determined and found to be E1 = 70.6 kJ, E2 = 19.6 kJ, ΔH1 = 67.9 kJ/mol, ΔH2 = 17 kJ/mol, ΔS1 = -76.2 J/(K·mol), ΔS2 = -204.2 J/(K·mol), respectively. In this work the limitation of each technique (spectrophotometry vs. HRSTEM) as a complex tool to understand the dynamic of the colloidal system was discussed.

Microstructural evolution during the crystallization process of sol-gel derived PbZrO3 nanocomposite thin films

For the application of dielectric materials in energy storage, nanocomposition is one of the effective methods to improve their electric breakdown field strength. In this study, PbZrO3-Al2O3 nanocomposite films were prepared by combined thermal evaporation deposition and a sol–gel method. By changing the annealing time, the crystallization process of PbZrO3 matrix and the formation mechanism of Al2O3 nanoparticles were studied, and the microstructure evolution process of composite films was elucidated. The results indicate that before the final annealing at 700 ℃, Al atoms have diffused into the amorphous PbZrO3 film, and some fine grains of the perovskite phase have been generated at the bottom of the film. As the annealing time increases, the perovskite grains grow along the out of plane direction of the thin film to form columnar grains, and Al atoms diffuse into the perovskite phase lattice; As the annealing time further increases, Al2O3 nanoparticles began to precipitate at the interlayer interfaces of PbZrO3 coating layers, forming a layered distribution. The changes in electric properties with annealing time also demonstrate the microstructural evolution process of the composite film during annealing. Therefore, controlling annealing time is an effective means to control the microstructure and electric properties of composite films prepared by the new method for the application of energy storage.

Formation mechanism of herpetrione self-assembled nanoparticles based on pH-driven method

Formation mechanism of herpetrione self-assembled nanoparticles based on pH-driven method

Investigation on different additions as candidates for nano-oxide particles in nickel-based ODS superalloys

Four nickel-based oxide dispersion strengthened (ODS) superalloys with the additions of YH2, Y2O3, La2O3 and CeO2 (denoted as ODS-Y1 ODS-Y2, ODS-La and ODS-Ce) are prepared, respectively. The tensile tests at temperatures ranging from room temperature (RT) to 1000 °C were conducted on them. In this work, by means of microstructure characterization and theoretical modeling, different strengthening mechanisms including grain boundary strengthening, solution strengthening, dislocations and dispersion strengthening, were estimated to contribute to the yield strength in different degrees, which would help to further enhance the tensile properties of alloys through nanoparticles optimization thereafter, and the formation and evolution mechanism of nanoparticles are discussed. The results show that ODS-Y1 has the smallest particles and the best comprehensive mechanical property in the tested alloys. The nanoparticles having M-Al-rich (M = Y, La, Ce) cores and Ti-O-rich shells structure are observed in nickel-based ODS superalloys, and the M-Al-O are preferentially formed, due to the higher diffusion rate of Al atom and high M/Al value. Then Ti and O atoms diffuse to the surface of nanoparticles, forming a core-shell structures in the later precipitation stages.

Design and Synthesis of a Water-Based Nanodelivery Pesticide System for Improved Efficacy and Safety.

Developing an environmentally friendly and safe nanodelivery system is crucial to improve the efficacy of pesticides and minimize environmental and health risks. However, preparing a completely water-based nanopesticide without using harmful solvents is a technical challenge. In this study, a water-based nanodelivery pesticide system was constructed to improve the efficacy and safety of Emamectin Benzoate (EB). A specific surfactant, 29-(4-(5-hydroxynonan-5-yl)phenoxy)-3,6,9,12,15,18,21,24,27-nonaoxanonacosan-1-ol (SurEB) was designed and synthesized to form a water-based nanodelivery system (EBWNS) with EB. Molecular dynamics simulations revealed the self-assembly and interaction forces between SurEB and EB in water, providing insights into the formation mechanism of EBWNS nanoparticles. The nanodelivery system showed the prolonged effectivity of EB with reduced degradation and demonstrated a good control efficacy for multiple target pests, such as red spider mite, beet armyworm larvae (Lepidoptera: Noctuidae), and rice stem borers (Chilo suppressalis). Toxicology tests on various objects demonstrated that the EBWNS has low toxicity for seeds, HaCaT cells, zebrafish, earthworm, and E. coli. This study provides a distinctive perspective for developing environmentally friendly nanopesticide formulations, which clarified a water-based treatment method for specific lipid-soluble pesticides. The water-based nanodelivery pesticide system has the potential to improve the efficacy and safety of pesticides in the process of field applications.

Polyhydroxy Fullerene for Synthesizing Noble Metal Nanoparticles

The redox properties of fullerene and its derivatives enable them to function as electron relays through either oxidation or reduction. Polyhydroxy fullerene (PHF), also known as fullerol or fullerenol, is highly water-soluble derivative and a well-known antioxidant. We have found that PHF is also very effective in reducing noble metal precursors and stabilizing metal nanoparticles by forming covalent M-O bonds. Traditionally, noble metal nanoparticles, such as gold are synthesized using a reducing agent like sodium borohydride (NaBH4) or sodium citrate at elevated temperatures and alkaline pH, with stabilizers added during nucleation to control the size and dispersion of the nanoparticles. While sodium citrate is sometimes used as a single reducing and stabilizing agent, it is not an effective stabilizer and is often replaced with polymers to improve colloidal dispersion. In contrast, PHF can be used as a single reducing and stabilizing agent for metal nanoparticles. The nanoparticles were synthesized by simply mixing the metal precursors with PHF in an aqueous phase and stirring at room temperature. The size and morphology of synthesized nanoparticles were characterized with high-resolution transmission electron microscopy, aberration corrected TEM, and dynamic light scattering. These nanoparticles were monodisperse with size ranging from 2 nm to 100 nm in diameter, which could be controlled by changing the concentration of the two reactants. We utilized multiple tools to investigate the mechanism of reduction and nanoparticle formation. We propose a kinetic agglomerate-dissociation mechanism to describe the formation of gold nanoparticles using PHF. Kinetic agglomerates form instantaneously upon mixing the two reactants due to electrostatic interactions. During the reduction process reactive carbonyl peaks were observed with electron energy loss spectroscopy. The carbonyl moieties were observed only after agglomerate formation and subsequently changed to Au-O bonds between PHF and synthesized gold nanoparticles, which was confirmed with Fourier-transform infrared spectroscopy and density-functional theory calculations, and X-ray photoelectron spectroscopy. Further, we demonstrated that the synthesis of gold nanoparticles using PHF can be affected by pH due to changes in hemiketal structure of PHF. Compared to citrate ions, PHF-coated gold nanoparticles are more stable, remaining so for over two years. The novel PHF-mediated synthesis method can also be applied to other noble metals like platinum, palladium, and silver and create bimetallic nanoparticles. The surface PHF coating on noble metal nanoparticles integrates the properties of both metal and carbon nanoparticles, resulting in superior functional applications. Our findings open up new opportunities for metallic nanoparticle preparation methods, properties, and applications.

Origin and Formation Mechanism of Carbon Shell-Encapsulated Metal Nanoparticles for Powerful Fuel Cell Durability

Proton exchange membrane fuel cells (PEMFCs) face technical issues of performance degradation due to catalyst dissolution and agglomeration in real-world operations. To address these challenges, intensive research has been recently conducted to introduce additional structural units on the catalyst surface. Among various concepts for surface modification, carbon shell encapsulation is known to be a promising strategy since the carbon shell can act as a protective layer for metal nanoparticles. As an interesting approach to form carbon shells on catalyst surfaces, the precursor ligand-induced formation is preferred due to its facile synthesis and tunable control over the carbon shell porosity. However, the origin of the carbon source and the carbon shell formation mechanism have not been studied in depth yet. Herein, this study aims to investigate carbon sources through the use of different precursors and the introduction of new methodologies related to the ligand exchange phenomenon. Subsequently, we provide new insights into the carbon shell formation mechanism using X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD). Finally, the thermal stability and electrochemical durability of carbon shells are thoroughly investigated through in situ transmission electron microscopy (in situ TEM) and accelerated durability tests.

In Situ Investigation on the Formation Mechanism of High-Entropy Alloy Nanoparticles Induced by Hydrogen Spillover

In Situ Investigation on the Formation Mechanism of High-Entropy Alloy Nanoparticles Induced by Hydrogen Spillover

Phenomic and transcriptomic analyses reveal the sequential synthesis of Fe3O4 nanoparticles in Acidithiobacillus ferrooxidans BYM.

Understanding the molecular mechanism of magnetite (Fe3O4) nanoparticle synthesis in Acidithiobacillus ferrooxidans BYM is particularly important for the commercial development of biogenic Fe3O4 nanoparticles. The phenomic parameters such as intracellular iron content and number and size of Fe3O4 nanoparticles were significantly affected by different treatment conditions, i.e., FeSO4·7H2O concentrations (0, 40, and 80 g/L), growth times (12, 36, and 50 h), and magnetic field intensities (0.05, 3.5, and 15 mT) (P < 0.01). Transcriptome analysis revealed that 2,164, 1,587, and 1,061 differentially expressed genes (DEGs) were accordingly detected, and 24 significant expression profiles were identified in A. ferrooxidans BYM under the three treatment conditions. The construction of gene regulatory networks for Fe3O4 nanoparticle synthesis indicated that DEGs mainly enrich ion transport, oxidation-reduction process, membrane structure, signal transduction, and quorum sensing. The four modules were found to be significantly associated with Fe3O4 nanoparticle phenomic parameters using a weighted gene co-expression network. Ten hub genes significantly correlated with Fe3O4 nanoparticle phenomic parameters (P < 0.01) were finally selected from 24 eigengenes related to iron metabolism screened from these models. On the basis of the previous research results and the present study findings, we provide a hypothetical molecular model for Fe3O4 nanoparticle synthesis mediated by these hub genes in A. ferrooxidans BYM comprising membrane formation, iron uptake and transport, iron redox, and crystal maturity. Our results will enable in-depth studies of Fe3O4 nanoparticle synthesis in non-magnetotactic magnetosome-producing bacteria. IMPORTANCE As the most important non-magnetotactic magnetosome-producing bacteria, Acidithiobacillus ferrooxidans only requires very mild conditions to produce Fe3O4 nanoparticles, thus conferring greater flexibility and potential application in biomagnetic nanoparticle production. However, the available information cannot explain the mechanism of Fe3O4 nanoparticle formation in A. ferrooxidans. In this study, we applied phenomic and transcriptomic analyses to reveal this mechanism. We found that different treatment condition factors notably affect the phenomic data of Fe3O4 nanoparticle in A. ferrooxidans. Using transcriptomic analyses, the gene network controlling/regulating Fe3O4 nanoparticle biogenesis in A. ferrooxidans was proposed, excavating the candidate hub genes for Fe3O4 nanoparticle formation in A. ferrooxidans. Based on this information, a sequential model for Fe3O4 nanoparticle synthesis in A. ferrooxidans was hypothesized. It lays the groundwork for further clarifying the feature of Fe3O4 nanoparticle synthesis.

Impact of electrical current on cluster nucleation production: Phase, structure, and nanosize for Al2O3

The aluminum industry clearly stands out for its versatility and relevance to the development of an entire production chain that generates thousands of jobs. This metal is present in everyone's daily life because it is used in a variety of industries, including civil construction, the automotive industry, health care, and energy. Nano alumina products were prepared in two different phases with different sizes, and shapes via a solid–liquid plasma reactor. Both yields were prepared in identical circumstances, but with different effects of electrical current that result in different energetic cluster formations that lead to different formation shapes, sizes and phase structures (γ-Al2O3-NPs and δ-Al2O3-Nano-structure). In our best knowledge, the most recent research carried out to obtain Al2O3-Nps by arc discharge successfully produced different shapes or phases in each experiment: γ-δ-θ-α-Al2O3-Nps that’s why studying the parameters that affect the shape formation of Nano-Al2O3 is among our research interests. The binary yields produced were characterized to investigate their shape, size, purity, and morphology. Furthermore, γ-Al2O3-NPs had a spherical shape with a diameter of about 41.5 nm, as opposed to the rhomboid shape of 30 nm for δ-Al2O3-NanoStructure. Results showed that the electrical current plays a vital role in the size and crystal structure of the nanoparticles. Based on current production, the composition and formation mechanisms of nanoparticles are discussed. This research demonstrates an eco-friendly route for the rapid production of various Nano-alumina structures. The discrepancy between the energy used and the work function to remove electrons may be converted to heat energy in solution or may be a key factor in altering the crystal order of the generated ions to achieve a certain shape.

Unveiling the formation mechanism of polydisperse iron oxide nanoparticles in coprecipitation route

Coprecipitation is the simplest, fastest, and most inexpensive method for preparing metal oxide nanoparticles (NPs). It is considered one of the most convenient methods for simultaneously precipitating two or more aqueous metal salt precursors (such as chlorides, nitrates, oxychloride, etc.) into NPs in a basic solvent, yielding uniform composition. However, the main drawback of this route is the production of NPs with a broad size distribution (polydispersed particle formation), which limits their use in various applications. The present work addresses the experiments and formation mechanism of polydispersed iron oxide magnetite (Fe3O4) NPs using this route. Experiments involving the drop-wise addition of mixed ferric (Fe3+) and ferrous (Fe2+) chloride salt solutions to NaOH base solution at room temperature resulted in a polydispersed Fe3O4 NP system containing both large and small particles at the end of 30 min of the reaction. A mechanism is proposed to explain the formation of these polydispersed Fe3O4 NPs based on the time scales of different individual particle formation events and the experimental aging time. The mechanism elucidates that the time scales of events such as Fe3O4 nucleation, diffusional-limited and Ostwald ripening growth of small and large particles, and the coagulation of two small particles or a small particle with a large particle are smaller, and completed within the experimentally allowed aging time. Conversely, the coagulation time for two large particles exceeds the experimental time, preventing complete coagulation. As a result, incomplete coagulation of large particles and the completion of all other events lead to the formation of a polydispersed Fe3O4 NP system at the end of the synthesis. The combined experiments and time scale-based mechanism explain the polydispersed NP formation in the coprecipitation route, and the insights gained from this understanding can be beneficial for optimizing synthesis conditions to achieve a controlled size distribution of Fe3O4 and other NP systems.

Diatomaceous Biosilica Doped with Heteroepitaxially Growing Ag/AgCl/CeO2 Composite Nanoparticles: Synthesis, Characterisation and Antibacterial Application

Modern technology's development is also towards using microorganisms as micro-factories of biomaterials with unique properties and combining the original properties of biosilica extracted from diatoms (microalgae) together with immobilised silver and cerium in nanoparticle forms allowed to obtain a modern composite material with antibacterial activity. The synthesised composites containing heteroepitaxially growing Ag/AgCl/CeO2 complex nanoparticles were studied using different types of instrumental analysis. SEM-EDX and XRD analysis allowed the qualitative and quantitative determination of the elements present and their forms in the composites. TEM permitted analysis of information about the created nanoparticles shape, size and structure specificity. The possible mechanism of nanoparticle formation was suggested. Antibacterial properties of synthesised composites were characterised using a minimum inhibitory concentration test on six selected bacterial strains. Diatomaceous biosilica containing heteroepitaxially growing silver chloride, metallic silver, and cerium (IV) oxide nanoparticles have been prepared for the first time. The proposed method for synthesising composites did not use toxic reagents, making it environmentally friendly.Graphical

Impurity-driven simultaneous size and crystallinity control of metal nanoparticles

Both the size and crystallinity should be optimized for practical applications utilizing metallic nanoparticles because they strongly influence the nanoparticles property. Herein a liquid phase chemical reduction method controls the defects (crystallinity) in metallic Cu nanoparticles simply and easily. Although the addition of an impurity substance, which cannot be thermodynamically alloyed with Cu, reduces the crystallinity of synthesized Cu nanoparticles, it also affects the deposition behavior, and consequently, the nanoparticle size changes unexpectedly. Therefore, a precise control of the synthesis condition is required to synthesize the nanoparticles having optimal size and crystallinity. To clarify the nanoparticle formation mechanism in an impurity-containing solution, the catalytic activity of the reductant and the redox potential change due to the metastable product are electrochemically evaluated to reveal the correlation between nanoparticle formation behavior and synthesis condition. Finally, the synthesis of two types of Cu nanoparticles, which have similar sizes but different crystallinities is demonstrated. This simple nanomaterial design approach to control the crystallinity and the interpretation of the deposition process in an impurity-containing condition should be widely applicable to metallic nanoparticle syntheses.

Study the growth mechanism of AgNi nanoparticles by surface diffusion

Quantifying the kinetic processes of the diffusion and growth of adsorbed atoms on the surface of nanoparticles at the atomic level enables the control of nanomaterial structures. To examine the diffusion and growth of adsorbed atoms on the surface of nanoparticles, this study adopts AgNi nanoparticles as an example, comprehensively explores surface diffusion, and reveals the physical causes of the growth results from the perspective of surface diffusion. Molecular dynamics, Monte Carlo, and nudged elastic band methods are utilized. Many studies have been conducted on the diffusion barriers of adsorbed atoms. On the basis of these studies, the current work classifies the diffusion paths of adsorbed atoms on the surface of nanoparticles in detail and determines the optimal surface diffusion paths. It reveals the formation mechanism of AgNi nanoparticles from the perspective of surface diffusion and the physical causes of the clustering of surface atoms into islands during growth. Among all the surface exchange diffusion paths defined in this study, the center exchange diffusion paths, especially CPDE, are the best when the system energy decreases after the substrate boundary atom is exchanged with an adatom. The relative magnitude of the exchange energy barriers between hetero adsorbed atoms and atoms on the substrate surface is a major determinant of the formation of core–shell and three-layer onion-like structures and the degree of surface alloying of the nanoparticles. In addition, the appearance of surface energy trap sites during the growth of AgShellNiCore nanoparticles leads to the diffusion of surface Ag atoms to these sites and their aggregation into Ag islands.

Facile One-Step Pyrolysis of ZnO/Biochar Nanocomposite for Highly Efficient Removal of Methylene Blue Dye from Aqueous Solution.

In this work, we developed a facile one-step pyrolysis method for preparing porous ZnO/biochar nanocomposites (ZBCs) with a large surface area to enhance the removal efficiency of dye from aqueous solution. Peanut shells were pyrolyzed under oxygen-limited conditions with a molten salt ZnCl2, which played the roles of the activating agent and precursor for the formation of nanoparticles. The effects of the mass ratio between the molten salt ZnCl2 and peanut shells as well as pyrolysis temperature on the formation of ZBCs were investigated. Characterization results revealed that the as-synthesized ZBCs exhibited a highly porous structure with a specific surface area of 832.12 m2/g, suggesting a good adsorbent for efficient removal of methylene blue (MB). The maximum adsorption capacity of ZBCs on MB was 826.44 mg/g, which surpassed recently reported adsorbents. The formation mechanism of ZnO nanoparticles on the biochar surface was due to ZnCl2 vaporization and reaction with water molecules extracted from the lignocellulosic structures. This study provides a basis for developing a simple and large-scale synthesis method for wastewater with a high adsorption capacity.

Preparation of graphene-coated high entropy alloy nanoparticles by double pulse carbothermal shock

High entropy alloy (HEA) nanoparticles have wide application prospects in electrocatalysis due to their unique structure. However, the surface of HEA nanoparticles has strong chemical activity due to numerous suspended and unsaturated bonds, which poses serious challenges to storage and transportation. To solve this problem, we used a double pulse carbothermal shock process to coat the surface of HEA nanoparticles with graphene. The formation mechanism of HEA nanoparticles and the graphene coating mechanism were discussed. The results showed that the HEA thin films were curled into nanoparticles by the change of orientation of twin structure under the thermal stress of carbothermal shock. After the complete HEA nanoparticles were formed, the carbon dissolved in the HEA nanoparticles will gradually precipitate out during a second carbothermal shock and form multiple layers of graphene on the surface, and forming a structure of graphene-coated HEA nanoparticles.

Sol-Gel Approach for Fabricating Silica/Epoxy Nanocomposites.

This review focuses on the opportunities provided by sol-gel chemistry for the production of silica/epoxy nanocomposites, with significant representative examples of the "extra situ" approach and an updated description of the "in situ" strategy. The "extra situ" strategy enables the creation of nanocomposites containing highly engineered nanoparticles. The "in situ" approach is a very promising synthesis route that allows us to produce, in a much easier and eco-friendly manner, properly flame-retarded silica/epoxy nanocomposites endowed with very interesting properties. The review highlights the recently proposed mechanism of nanoparticles formation, which is expected to help to design the synthesis strategies of nanocomposites, changing their composition (both for the nanoparticle and matrix nature) and with in situ-generated nanoparticles possibly more complex than the ones obtained, until today, through this route.

Iron oxide induced preparation of nanoscrolls of reduced graphene oxide for electrochemical charge storage applications

Fe3O4 - reduced graphene oxide nanoscrolls (FRGNS) are tailored for fabricating electrode material for supercapacitor applications. The scrolling of reduced graphene oxide is initiated by the magnetic field produced by the superparamagnetic iron oxide NPs. The formation mechanism and critical concentration of nanoparticles required for scroll formation is investigated by varying the weight ratio of iron oxide NPs. The nanoscroll formation is completely reversible and reproducible. The unique end open morphology of nanoscrolls facilitates the electrolytic accessibility and the Fe3O4 NPs favor the redox reactions as well. At a current density of 1Ag-1, FRGNS12 (rGO: Fe3O4 1:12) achieve a noteworthy specific capacitance value of 1498 Fg-1 within a potential ranging from 0 to −0.73 V in 1 M Na2S2O3 with exceptional energy density of 110.9 Wh Kg−1 and power density of 405 Wkg-1. A prominent cycling stability of 88% capacitance retention after 4000 cycles is also obtained. The electrochemical performance of opened as well as regenerated scrolls (RFRGNS12) are also evaluated. The specific capacitance increases to 1514 Fg-1 for RFRGNS12 due to the further exfoliation of rGO sheets take place during the unscrolling and scroll regeneration process. The unique fabrication methodology for the synthesis of graphene nanoscrolls and their utilization as electrode material for supercapacitors paves a new pathway for the advancement of novel electrode materials for supercapacitors.