A5070204571- ZnO doping and properties
- Supercapacitor Materials and Fabrication
- Graphene research and applications
- Copper-based nanomaterials and applications
- Advancements in Battery Materials
- Ga2O3 and related materials
- Electrocatalysts for Energy Conversion
- Quantum Dots Synthesis And Properties
- Advanced Photocatalysis Techniques
- MXene and MAX Phase Materials
- Advanced Sensor and Energy Harvesting Materials
- Advanced battery technologies research
- Gas Sensing Nanomaterials and Sensors
- Conducting polymers and applications
- Electronic and Structural Properties of Oxides
- Chalcogenide Semiconductor Thin Films
- Liquid Crystal Research Advancements
- Dielectric properties of ceramics
- Semiconductor materials and devices
- TiO2 Photocatalysis and Solar Cells
- Ferroelectric and Piezoelectric Materials
- Multiferroics and related materials
- Photonic Crystals and Applications
- Carbon Nanotubes in Composites
- GaN-based semiconductor devices and materials
Indian Institute of Technology Guwahati
2015-2025
Korea Institute of Science and Technology
2023
Korea Advanced Institute of Science and Technology
2013-2016
Institute for Basic Science
2013-2014
Jadavpur University
2006-2013
University of Kalyani
2011-2013
Cost effective hydrogen evolution reaction (HER) catalyst without using precious metallic elements is a crucial demand for environment-benign energy production. Molybdenum sulfide one of the promising candidates such purpose, particularly in acidic condition, but its catalytic performance inherently limited by sparse edge sites and poor electrical conductivity. We report synthesis HER catalysis hybrid catalysts composed amorphous molybdenum (MoSx) layer directly bound at vertical N-doped...
Outstanding pristine properties of carbon nanotubes and graphene have limited the scope for real‐life applications without precise controllability material structures properties. This invited article to celebrate 25 th anniversary Advanced Materials reviews current research status in chemical modification/doping their relevant with optimized A broad aspect specific correlations between schemes graphitic carbons novel tunable is summarized. An overview practical benefits from...
Substitutional heteroatom doping is a promising route to modulate the outstanding material properties of carbon nanotubes and graphene for customized applications. Recently, (nitrogen-) N-doping has been introduced ensure tunable work-function, enhanced n-type carrier concentration, diminished surface energy, manageable polarization. Along with assessment effects, research on N-doped based composite structures emerging synergistic integration various functional materials. This invited...
Site specific electroless gelation enables straightforward solution processing of graphene gel films with ultimate scalability and three-dimensional shape engineering. Due to the synergistic combination open porous structure highly electro-conductivity framework, engineered could be exploited for high performance supercapacitor electrode achieved large energy capacity power density, simultaneously. As a service our authors readers, this journal provides supporting information supplied by...
Interference and chaos among different electromagnetic signals become the prime challenge of current era which relies on wireless communication. Effective shielding interference (EMI) waves with advanced materials thus emerges as major research field to prevent cross-talking electronic devices. This article reviews status polymer-based EMI a particular focus high-performance hybrid diverse nanomaterials filler. Compatibility synergist polymer host filler have been illuminated in this...
Stoichiometric NiO, a Mott–Hubbard insulator at room temperature, shows p-type electrical conduction due to the introduction of Ni2+ vacancies (VNi'') and self-doping Ni3+ ions in presence excess oxygen. The conductivity this important material is low not sufficient for active device fabrication. Al doped NiO thin films were synthesized by radio frequency (RF) magnetron sputtering on glass substrates substrate temperature 250 °C an oxygen + argon atmosphere order enhance conductivity. X-ray...
Morphology controlled hierarchical ZnO/CuO architecture was obtained on both flexible and rigid substrates, which exhibited excellent photocatalytic performance by virtue of favourable heterojunction formation at nanostructure interfaces.
Abstract Atomic level engineering of graphene-based materials is in high demand to enable customize structures and properties for different applications. Unzipping the graphene plane a potential means this end, but uncontrollable damage two-dimensional crystalline framework during harsh unzipping reaction has remained key challenge. Here we present heteroatom dopant-specific carbon nanotubes as reliable controllable route customized intact nanostructures. Substitutional pyridinic nitrogen...
Graphene oxide (GO) is aqueous-dispersible oxygenated graphene, which shows colloidal discotic liquid crystallinity. Many properties of GO-based materials, including electrical conductivity and mechanical properties, are limited by the small flake size GO. Unfortunately, typical sonochemical exfoliation GO from graphite generally leads to a broad shape distribution. Here, we introduce facile selection large-size exploiting crystallinity investigate size-dependent N-doping oxygen reduction...
Energy-efficient CO2 capture is a stringent demand for green and sustainable energy supply. Strong adsorption desirable high capacity selective at ambient conditions but unfavorable regeneration of adsorbents by simple pressure control process. Here we present highly regenerative carbon nitride functionalized porous reduced graphene oxide aerogel surface. The resultant structure demonstrates large (0.43 mmol·g–1) selectivity against N2 yet retains regenerability to desorb 98% swing....
High overpotentials required to cross the energy barriers of both hydrogen and oxygen evolution reactions (HER OER) limit overall efficiency production by electrolysis water. The rational design heterostructures anchoring single-atom catalysts (SAC) are two successful strategies lower these overpotentials, but realization such advanced nanostructures with adequate electronic control is challenging. Here, heterostructure edge-oriented molybdenum selenide (MoSe2 ) nickel-cobalt-selenide (NiCo2...
A rechargeable zinc ion capacitor (ZIC) employing a metallic anode, nature-abundant materials-derived high-performance cathode, and an aqueous electrolyte represents interesting combination of high capacitance, power, safety operation, overall sustainable economic system, which make them leading power source to portable consumer electronics. However, it is often challenge fabricate large-area flexible device with anode due the characteristic rigidity metal. Herein we present ZIC based on...
Electrochemical oxygen redox reactions are the crucial elements for energy conversion and storage including fuel cells metal air batteries. Despite tremendous research efforts, developing high-efficient, low-cost, durable bifunctional catalysts remains a major challenge. We report new class of hybrid material consisting subnanometer thick amorphous cobalt hydroxide anchored on NCNT as ORR/OER catalyst. Although species-based known good OER catalysts, hybridizing with successfully enhanced...
Abstract The assembly of MXene nanosheets into a hydrogel framework is key to their grand success in practical applications. However, the scalable realization such stable structures challenging and requires critically high dispersion concentration for gelation. Herein, simple yet highly controllable approach development 2D 3D monolithic hydrogels via electro‐tunable ordered reported. Directional electrophoretic drag gelation by voltage‐controlled situ released ions at electrode interface...
Abstract Fine control over the graphitization level of carbonized nanostructures can play a strategic role in tuning crystallization supported nanocatalysts, thereby modulating kinetics catalysis. However, realizing synergistic interplay graphitization‐tunable support and catalysts poses significant challenge. This study proposes current pulse‐induced ultrafast strategy for developing MOF‐derived graphitic nano‐leaves (GNL) ultrafine ruthenium nanoclusters exhibiting selective states...
Biomass-derived carbon materials are gaining attention for their environmental and economic advantages in waste resource recovery, particularly potential as high-energy alkali metal ion storage. However, ensuring the reliability of secondary battery anodes remains a significant hurdle. Here, we report Areca Catechu sheath-inner part derived (referred to ASIC) high-performance anode both rechargeable Li-ion (LIBs) Na-ion batteries (SIBs). We explore microstructure electrochemical performance...
Graphene offers great promise to complement the inherent limitations of silicon electronics. To date, considerable research efforts have been devoted complementary p- and n-type doping graphene as a fundamental requirement for graphene-based Unfortunately, previous suffer from undesired defect formation, poor controllability level, subtle environmental sensitivity. Here we present that can be n-doped by simple polymer coating with different dipolar characteristics. Significantly, spontaneous...
Double-stage molecular diffusion control is achieved in an ‘organic-graphene hydrogel’ biphasic system to yield tunable MOF-based functional hydrogel-hybrids, with excellent water oxidation performance (with a low onset potential and Tafel slope of 44.3 mV dec<sup>−1</sup>).