A5100670290- Advanced Photocatalysis Techniques
- CO2 Reduction Techniques and Catalysts
- Catalytic Processes in Materials Science
- Copper-based nanomaterials and applications
- Covalent Organic Framework Applications
- Electrocatalysts for Energy Conversion
- TiO2 Photocatalysis and Solar Cells
- Chemical Synthesis and Reactions
- Nanomaterials for catalytic reactions
- Sulfur-Based Synthesis Techniques
- Carbon dioxide utilization in catalysis
- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- Advanced Cellulose Research Studies
- Advanced Nanomaterials in Catalysis
- 2D Materials and Applications
- Oxidative Organic Chemistry Reactions
- Nanocluster Synthesis and Applications
- Inorganic Chemistry and Materials
- Carbon and Quantum Dots Applications
- Gas Sensing Nanomaterials and Sensors
- MXene and MAX Phase Materials
- Water Quality and Pollution Assessment
- Asymmetric Hydrogenation and Catalysis
- Advanced Sensor and Energy Harvesting Materials
Indian Institute of Petroleum
2001-2025
University of Calgary
2021-2025
Dr. Shakuntala Misra National Rehabilitation University
2024
Shoolini University
2024
Redlen Technologies (Canada)
2024
Post Graduate Institute of Medical Education and Research
2014-2024
University of Alberta
2018-2023
Central University of Jammu
2023
University of Delhi
2022-2023
Central University of Himachal Pradesh
2019-2022
Modification of carbon nitride based polymeric 2D materials for tailoring their optical, electronic and chemical properties various applications has gained significant interest. The present report demonstrates the synthesis a novel modified framework with remarkable 3:5 C:N stoichiometry (C3N5) an bandgap 1.76 eV, by thermal deammoniation melem hydrazine precursor. Characterization revealed that in C3N5 polymer, two s-heptazine units are bridged together azo linkage, which constitutes...
2D carbon semiconductors and composites are highly promising photocatalysts.
Single atom catalysts (SACs) possess unique catalytic properties due to low-coordination and unsaturated active sites. However, the demonstrated performance of SACs is limited by low SAC loading, poor metal-support interactions, nonstable performance. Herein, we report a macromolecule-assisted synthesis approach that enabled us demonstrate high-density Co single atoms (10.6 wt % SAC) in pyridinic N-rich graphenic network. The highly porous carbon network (surface area ∼186 m2 g-1) with...
Single-atom catalysts (SACs) aim at bridging the gap between homogeneous and heterogeneous catalysis. The challenge is development of materials with ligands enabling coordination metal atoms in different valence states, preventing leaching or nanoparticle formation. Graphene functionalized nitrile groups (cyanographene) herein employed for robust Cu(II) ions, which are partially reduced to Cu(I) due graphene-induced charge transfer. Inspired by nature's selection enzymes oxygen activation,...
The surging demand for energy and staggering pollutants in the environment have geared scientific community to explore sustainable pathways that are economically feasible environmentally compelling. In this context, harnessing solar using semiconductor materials generate charge pairs drive photoredox reactions has been envisioned as a futuristic approach. Numerous inorganic crystals with promising nanoregime properties investigated past decade yet demonstrate practical application due...
Biomass photorefining to selectively produce value-added bioproducts is an emerging alternative biomass valorization approach alleviate energy crisis and achieve carbon neutrality. Here, we demonstrate efficient selective glucose photo-oxidation gluconic acid via a rationally designed dual-functional nitride photocatalyst that not only allows H2O2 production 2e– oxygen reduction reaction (2e-ORR) but also realizes in situ photo-Fenton-like reaction. As result, the essential oxidative species...
Nickel nanoparticle-decorated phosphorous-doped graphitic carbon nitride (Ni@g-PC3N4) was synthesized and used as an efficient photoactive catalyst for the reduction of various nitrobenzenes under visible light irradiation. Hydrazine monohydrate source protons electrons intended reaction. The developed photocatalyst found to be highly active afforded excellent product yields mild experimental conditions. In addition, could easily recovered reused several runs without any detectable leaching during
New graphene oxide (GO)-tethered-Co(II) phthalocyanine complex [CoPc-GO] was synthesized by a stepwise procedure and demonstrated to be an efficient, cost-effective recyclable photocatalyst for the reduction of carbon dioxide produce methanol as main product. The developed GO-immobilized CoPc characterized X-ray diffraction (XRD), FTIR, XPS, Raman, diffusion reflection UV/Vis spectroscopy, inductively coupled plasma atomic emission spectroscopy (ICP-AES), thermogravimetric analysis (TGA),...
Heterojunctions of the low bandgap semiconductor bismuth oxyiodide (BiOI) with bulk multilayered graphitic carbon nitride (g-C3N4) and few layered sheets (g-C3N4-S) are synthesized investigated as an active photoanode material for sunlight driven water splitting. HR-TEM elemental mapping reveals formation a unique heterostructure between BiOI platelets (g-C3N4 g-C3N4-S) network that consisted dendritic nanoplates surrounded by g-C3N4 sheets. The presence in g-C3N4-S/BiOI nanocomposites...
Photocatalytic transformation of biomass into value-added chemicals coupled with co-production hydrogen provides an explicit route to trap sunlight the chemical bonds. Here, we demonstrate a rational design Zn1-xCdxS solid solution homojunction photocatalyst pseudo-periodic cubic zinc blende (ZB) and hexagonal wurtzite (WZ) structure for efficient glucose conversion simultaneously produce lactic acid. The optimized Zn0.6Cd0.4S catalyst consists twinning superlattice, has tuned bandgap,...
We present a potential solution to the problem of extraction photogenerated holes from CdS nanocrystals and nanowires. The nanosheet form C3N5 is low-band-gap (Eg = 2.03 eV), azo-linked graphenic carbon nitride framework formed by polymerization melem hydrazine (MHP). nanosheets were either wrapped around nanorods (NRs) following synthesis pristine chalcogenide or intercalated among them an in situ protocol two kinds heterostructures, CdS-MHP CdS-MHPINS, respectively. improved photocatalytic...
Abstract Renewable‐electricity‐powered carbon dioxide (CO 2 ) reduction (eCO R) to high‐value fuels like methane (CH 4 holds the potential close cycle at meaningful scales. However, this kinetically staggered 8‐electron multistep suffers from inadequate catalytic efficiency and current density. Atomic Cu‐structures can boost eCO R‐to‐CH selectivity due enhanced intermediate binding energies (BEs) resulting favorably shifted d‐band centers. In work, 2D nitride (CN) matrices, viz....
Single-atom catalysts (SACs) have developed as a potential advanced variety of wherein copper SACs (Cu SACs) appeared rising star in catalysis which promising catalytic activity is achieved by well-adjusted d-band center. Herein, the most recent advancements synthesis are highlighted. Various electrocatalytic applications such carbon dioxide reduction reaction, oxygen nitrogen biotherapeutic applications, coupling reactions, hydroxylation, hydrogenation, photocatalytic and other...
Biomass photorefining is a promising strategy to address the energy crisis and transition toward carbon carbon-neutral society. Here, we demonstrate feasibility of direct cellulose into arabinose by rationally designed oxygen-doped polymeric nitride, which generates favorable oxidative species (e.g., O2–, •OH) for selective reactions at neutral conditions. In addition, also illustrate mechanism photocatalytic conversion density functional theory calculations. The oxygen insertion derived...
A ruthenium trinuclear polyazine complex was synthesized and subsequently immobilized through complexation to a graphene oxide support containing phenanthroline ligands (GO-phen). The developed photocatalyst used for the photocatalytic reduction of CO2 methanol, using 20 watt white cold LED flood light, in dimethyl formamide–water mixture triethylamine as reductive quencher. After 48 h illumination, yield methanol found be 3977.57 ± 5.60 μmol gcat−1. exhibited higher activity than oxide,...