PREPARATION AND VISIBLE LIGHT RESPONSIVE PHOTOCATALYTIC ACTIVITY OF Fe3O4/Ni-Al-Ce LDH/Bi2WO6 COMPOSITES

被引：7

作者：

Hao, Jiaqi ^{[1
]}

Qu, Ting ^{[1
]}

Wang, Qiufeng ^{[1
]}

Zhao, Zhenbo ^{[1
]}

机构：

[1] Changchun Univ Technol, Sch Chem & Life Sci, Changchun 130012, Jilin, Peoples R China

来源：

QUIMICA NOVA | 2017年 / 40卷 / 08期

关键词：

hydrothermal method; co-precipitation; Fe3O4/Ni-Al-Ce LDH/Bi2WO6 composites; photocatalytic; LAYERED DOUBLE HYDROXIDES; FACILE SYNTHESIS; TIO2; PERFORMANCE; FABRICATION; CORE; MICROSPHERES; DEGRADATION; HETEROSTRUCTURES; HETEROJUNCTIONS;

D O I：

10.21577/0100-4042.20170062

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Novel Fe3O4/Ni-Al-Ce LDH/Bi2WO6 composites were prepared through a hydrothermal method and co-precipitation method. The morphologies and structures of the photocatalysts were characterized by XRD, Raman, TEM, UV-vis-DRS, BET surface area and VSM techniques. The photocatalytic performances of the photocatalysts were investigated by the decolorization of methyl orange (MO) under visible-light irradiation. The results showed that the Fe3O4/Ni-Al-Ce LDH/Bi2WO6 composites exhibited greater photocatalytic activities compared to pure Bi2WO6 and the Ni-Al-Ce LDH; the decolorization rate of MO was 87% within 60 min under visible-light irradiation. The decolorization efficiency of the composite material remained at 71% after 4 recycling runs, showing improved stability. Furthermore, the experimental results also showed that the photocatalytic reactions for the composites followed first-order reaction kinetics. Therefore, the Fe3O4/Ni-Al-Ce LDH/Bi2WO6 composites were photocatalysts with high efficiencies and stabilities for a photocatalytic reaction of an organic pollutant, and this study provides a new, effective method for the development of wastewater treatment.

引用

页码：849 / 853

页数：5

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