Shalaka Varshney

ORCID: 0000-0003-4743-9435
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Research Areas
  • Liquid Crystal Research Advancements
  • Catalytic Processes in Materials Science
  • Surfactants and Colloidal Systems
  • Nanomaterials for catalytic reactions
  • Advanced Chemical Physics Studies
  • Ammonia Synthesis and Nitrogen Reduction
  • Electron and X-Ray Spectroscopy Techniques
  • Nanocluster Synthesis and Applications
  • Molecular spectroscopy and chirality
  • Copper-based nanomaterials and applications
  • Quantum Dots Synthesis And Properties
  • Photonic Crystals and Applications
  • MXene and MAX Phase Materials
  • Advanced Photocatalysis Techniques
  • Graphene research and applications
  • Synthesis and Properties of Aromatic Compounds
  • Nuclear Physics and Applications
  • Hydrogen Storage and Materials
  • Quantum, superfluid, helium dynamics

Hebrew University of Jerusalem
2023

Ariel University
2020-2023

Raman Research Institute
2017-2020

Abstract Elimination of nitro groups from the toxic aromatic compounds is great environmental importance. A catalytic study 4‐nitrophenol reduction on surface metallic and alloy nanoparticles presented. The silver‐based catalysts, with low amounts platinum (10 % Pt), exhibit excellent activity without an induction‐time, which fulfills both performance cost requirements for to 4‐aminophenol in presence NaBH 4 . apparent rate constant 59×10 −3 s −1 extremely high parameter value 13,600 g are...

10.1002/cctc.202000584 article EN ChemCatChem 2020-06-04

Assessing competitive environmental catalytic reduction processes via NaBH4 is essential, as BH4- both an energy carrier (as H2) and a reducing agent. A comprehensive study of the competition between borohydride hydrolysis reaction (BHR, releasing 4-nitrophenol on M0- M/M' (alloy)-nanoparticle catalysts reported. The results reveal inverse correlation efficiency for reduction, indicating that performing well in one process exhibit lower activity other. Plausible mechanisms are discussed,...

10.3390/molecules28186530 article EN cc-by Molecules 2023-09-08

Abstract Aluminum nanocrystals are emerging as a promising alternative to silver and gold for various applications ranging from plasmonic functionalities photocatalysis energetic materials. Such often exhibit an inherent surface oxidation layer, aluminum is highly reactive. Its controlled removal challenging but required, it can hinder the properties of encaged metal. Herein, two wet‐chemical colloidal approaches toward coating Al nanocrystals, which afford control over chemistry oxide...

10.1002/smll.202304478 article EN cc-by-nc-nd Small 2023-07-07

The mechanism of the catalytic hydrolysis BH4- on Au(111) as studied by DFT is reported. results are compared to analogous process Ag(111) that was recently It found borohydride species adsorbed stronger Au0 -NP surface than Ag0 surface. electron affinity Au larger Ag. indicate only two steps happening and reaction differs significantly from These remarkable were experimentally verified. Upon hydrolysis, three hydrogens transferred surface, not all four, H2 generation enhanced in presence H...

10.1002/cphc.202200069 article EN cc-by-nc-nd ChemPhysChem 2022-04-11
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