Microwave-assisted synthesis of ZnO for photocatalytic reduction of Cr(VI) in aqueous solution

被引：19

作者：

Liu, Xinjuan ^{[1
]}

Lv, Tian ^{[1
]}

Pan, Likun ^{[1
]}

Sun, Zhuo ^{[1
]}

Sun, Chang Qing ^{[2
]}

机构：

[1] E China Normal Univ, Dept Phys, Minist Educ, Engn Res Ctr Nanophoton & Adv Instrument, Shanghai 200062, Peoples R China

[2] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore

来源：

DESALINATION AND WATER TREATMENT | 2012年 / 42卷 / 1-3期

关键词：

Microwave-assisted synthesis; ZnO; Sheet; Photocatalysis; Cr(VI); UV light; BULK LIQUID-MEMBRANE; LOW-COST ADSORBENTS; WASTE-WATER; SOLVOTHERMAL SYNTHESIS; SAFRANIN-T; REMOVAL; ADSORPTION; CHROMIUM; CARBON; OXIDE;

D O I：

10.5004/dwt.2012.2825

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

ZnO sheets have been synthesized via microwave-assisted reaction of ZnO precursor in aqueous solution using a CEM microwave system. Their morphologies, crystal structures and photocatalytic performances in the reduction of Cr(VI) were characterized using scanning electron microscopy, transmission electron microscopy, X-ray diffraction spectroscopy and UV-vis absorption spectrophotometer, respectively. Results show that ZnO sheets synthesized in 5 min time scale exhibits a optimal photocatalytic performance in the reduction of Cr(VI) with removal efficiency of 81% under UV irradiation due to the maximal intensity of light absorption and the minimal probability of electron-hole pair recombination.

引用

页码：216 / 221

页数：6

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