Synthesis of hexagonal-like ZnO/Ag composite with excellent photocatalytic activity

Micro & nano letters

article

Ming Hua Wang¹  Hong Lan Cai¹  Zhen Liang Guo¹  Qing An Qiao¹  Shu Hua Ren¹  Dong Dong Zhu¹  Zhong Xin Xue¹ 

[1] School of Chemistry and Material Science, Ludong University

关键词: surface plasmon resonance;    nanoparticles;    zinc compounds;    Schottky barriers;    silver;    ultraviolet spectra;    semiconductor growth;    wide band gap semiconductors;    visible spectra;    II-VI semiconductors;    crystal growth from solution;    photoluminescence;    nanofabrication;    photocatalysts;    nanocomposites;    dyes;    visible light irradiation;    visible-light absorption;    photocatalytic activity;    zinc oxide-silver composite;    flux-solvothermal route;    silver nanoparticles;    photoluminescence emission intensity;    rhodamine B solution;    UV irradiation;    Schottky barriers;    surface plasmon resonance;    ZnO-Ag;   

DOI  :  10.1049/mnl.2018.5308

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Hexagonal-like zinc oxide (ZnO)/silver (Ag) composite was successfully synthesised by a flux/solvothermal route, and Ag nanoparticles are loaded on ZnO. Compared with pure ZnO, the attachment of Ag on ZnO can significantly increase visible-light absorption and reduce photoluminescence emission intensity. The photocatalytic performance of ZnO/Ag composite was evaluated by the degradation of Rhodamine B solution under ultraviolet (UV) light and visible light irradiation. The degradation rate of ZnO/Ag composite is obviously improved compared with pure ZnO and the commercial TiO 2 (P25) and is more than 2.5 and 2.9 times faster than that of pure ZnO under the UV and visible light irradiation, respectively. The enhanced photocatalytic activity of ZnO/Ag composite under UV irradiation was ascribed to the formation of Schottky barriers between Ag particles and ZnO. However, the superior photocatalytic activity under visible light irradiation could be attributed to the surface plasmon resonance of Ag particles.

【 授权许可】

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