Mechanism of 2,4-dinitrophenol photocatalytic degradation by ζ-Bi2O3/Bi2MoO6 composites under solar and visible light irradiation
Mechanism of 2,4-dinitrophenol photocatalytic degradation by ζ-Bi2O3/Bi2MoO6 composites under solar and visible light irradiation
复制标题
太阳光和可见光照射下zeta-Bi2O3/Bi2MoO6复合材料光催化降解2,4-二硝基苯酚的机理
DOI：
10.1016/j.cej.2014.04.085
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发表时间：
2014-09-01
影响因子：
15.1
通讯作者：
Au, Chak-Tong
中科院分区：
文献类型：
--
作者：
Ma, Jun;Zhang, Long-Zhu;Au, Chak-Tong
The zeta-Bi2O3/Bi2MoO6 composites were synthesized by a one-pot template-free hydrothermal method, and were systematically characterized by powder X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, UV-vis diffuse reflectance spectroscopy, and Raman spectroscopy. Based on the results of 2,4-dinitrophenol (2,4-DNP) degradation under simulated solar or visible light irradiation over the as-prepared materials, it is found that photocatalytic efficiency is closely related to the compositions of the materials, and the 20%zeta-Bi2O3/Bi2MoO6 catalyst performs the best. With the addition of H2O2 (5.0 mmol/L), there is marked improvement of photocatalytic activity. Related mechanisms for the photocatalytic degradation of 2,4-DNP and photocatalytic enhancement of the zeta-Bi2O3/Bi2MoO6 composites have been put forward. (C) 2014 Elsevier B.V. All rights reserved.
