Fabrication and photocatalytic properties of porous ZnO architectures

Micro & nano letters

article

Honglan Cai¹  Zhenliang Guo¹  Qingan Qiao¹  Shuhua Ren¹  Dongdong Zhu¹  Ping Yin¹  Zhongxin Xue¹ 

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

关键词: semiconductor growth;    II-VI semiconductors;    visible spectra;    zinc compounds;    calcination;    dyes;    wide band gap semiconductors;    ultraviolet spectra;    nanofabrication;    photocatalysis;    photodissociation;    porous semiconductors;    nanoporous materials;    liquid phase deposition;    ZnO;    photocatalytic properties;    porous ZnO architectures;    porous zinc oxide architectures;    calcination method;    ZnO samples;    ultraviolet irradiation;    optical properties;    photocatalytic activity;    trisodium citrate concentration;    porous microsphere;    hierarchical pore structure;    green hydrothermal method;    hexagonal wurtzite ZnO;    trisodium citrate solution;    Rhodamine B;    nanosheets;    charge separation;    ultraviolet light absorption;    dye photodegradation reaction;   

DOI  :  10.1049/mnl.2019.0381

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

In this work, a series of porous zinc oxide (ZnO) architectures were prepared by changing the concentration of trisodium citrate by using a green hydrothermal and calcination method, and the photocatalytic performance of the ZnO samples were investigated by using Rhodamine B as degradant under ultraviolet irradiation. The concentration of trisodium citrate had a great influence on the morphology, structure and optical properties of the ZnO samples, which together affected the photocatalytic activity. With the increase of trisodium citrate concentration, the morphology of as-prepared hexagonal wurtzite ZnO changed from flower-like to porous microsphere, and then formed bigger spheres which were more tightly assembled by nanosheets. The higher photocatalytic performance of ZnO microsphere prepared from 1 × 10 −3 mol·l −1 trisodium citrate solution was due to the hierarchical pore structure, its better ultraviolet light absorption and higher charge separation. Moreover, the mechanism of the dye photodegradation reaction was discussed.

【 授权许可】

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