Journal
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
Volume 152, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jpcs.2021.109935
Keywords
Au@Cu2O; Core-shell nanostructure; 4-Nitrophenol; 4-Aminophenol; Dye degradation
Funding
- SERB, New Delhi, India [CRG/2018/003533]
- Nano Mission [SR/NM/NS-20/2014]
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Core-shell metal-semiconductor nanostructures show excellent catalytic performance for dye degradation and organic pollutant reduction. The Au@Cu2O nanostructures exhibit a ten times higher reduction rate for 4-NP compared to Au NPs, demonstrating enhanced catalytic activity.
Core-shell metal-semiconductor nanostructures have established worldwide interest due to their magnificent chemical, optical and electrical behavior as compared to their monometallic analogous. Wet chemically synthesized gold-copper oxide (Au@Cu2O) core-shell nanostructures were studied for catalytic activity for the degradation of dyes such as crystal violet (CV) and congo red (CR) and the reduction of organic pollutant, 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) and compared with Au nanoparticles (Au NPs). The Au@Cu2O nanostructures show ten times higher reduction rate for 4-NP than that of monometallic Au NPs. The adsorption followed by degradation of CV, and CR dyes in aqueous solution has been investigated with Au NPs and Au@Cu2O core-shell nanostructures. Kinetics study has been performed using Au NPs and Au@Cu2O core-shell nanostructure for the 4-NP reduction, CV and CR degradation. The synergistic effect in Au@Cu2O core-shell nanostructure facilitates catalytic activity compared to the monometallic Au NPs.
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