1. Plasma electrochemical synthesis of cuprous oxide nanoparticles and their visible-light photocatalytic effect.
- Author
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Liu, Jiandi, He, Bangbang, Chen, Qiang, Liu, Hai, Li, Junshuai, Xiong, Qing, Zhang, Xianhui, Yang, Size, Yue, Guanghui, and Liu, Qing Huo
- Subjects
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ELECTROCHEMISTRY , *CUPROUS oxide , *NANOPARTICLE synthesis , *PLASMA flow , *ELECTROFORMING , *VISIBLE spectra , *PHOTOCATALYSIS - Abstract
A plasma electrochemical method is used to synthesize cuprous oxide nanoparticles (Cu 2 O NPs). In this system, a gaseous discharge plasma is used to replace the usual solid electrode in a conventional electrodeposition, and Cu 2+ ions are released from anodic dissolution and take a form of Cu 2 (OH) 2+ in the solution. The Cu 2 (OH) 2+ moves to the cathode reaction zone and then is reduced to the Cu 2 O monomer by reductants generated from the plasma-liquid interactions. Consequently, Cu 2 O NPs are formed in the solution by the combination of Cu 2 O monomers. The results indicate that the morphology and Cu valence in the nanoparticles are tuned by the added surfactant of glucose or ascorbic acid. Moreover, the Cu 2 O NPs synthesized with a suitable concentration of ascorbic acid demonstrate strong visible light photocatalytic activity on the methyl orange degradation. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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