Bisulfite assisted photocatalytic degradation of methylene blue by Ni-Fe-Mn oxide from MnO4 intercalated LDH

被引：35

作者：

Dou, Ruyan ^{[1
]}

Ma, Jianfeng ^{[1
]}

Huang, Daiqin ^{[1
]}

Fan, Changhai ^{[2
]}

Zhao, Wenchang ^{[1
]}

Peng, Mingguo ^{[1
]}

Komarneni, Sridhar ^{[3
]}

机构：

[1] Changzhou Univ, Sch Environm & Safety Engn, Changzhou 213164, Jiangsu, Peoples R China

[2] Pinghu Petro Chem Co Lod, Pinghu 314200, Zhejiang, Peoples R China

[3] Penn State Univ, Dept Ecosyst Sci & Management, Mat Res Inst, Mat Res Lab 204, University Pk, PA 16802 USA

来源：

APPLIED CLAY SCIENCE | 2018年 / 161卷

基金：

中国国家自然科学基金;

关键词：

Manganese metal oxide; Photocatalytic degradation; NaHSO3; Methylene blue; LAYERED DOUBLE HYDROXIDES; NANOPARTICLES; PERFORMANCE; OXIDATION; PHOTODEGRADATION; COMPOSITES; ASSEMBLIES; REMOVAL; PHENOL; TIO2;

D O I：

10.1016/j.clay.2018.04.020

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A novel composite of Ni-Fe-Mn ternary metal oxide (Mn-LDO) was synthesized by MnO4- intercalation into NiFe-LDH and calcination to improve photocatalytic efficiency. The conventional Ni-Fe binary metal oxide (C-LDO) prepared from Ni-Fe-LDH was also employed for comparison. Bisulfite was added to the above oxides in order to improve the photocatalytic degradation during the reaction. The as-synthesized samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), X-ray fluorescence (XRF), Brunauer, Emmett, and Teller (BET), UV-Vis diffuse reflectance spectroscopy and X-ray photoelectron spectra (XPS). Photocatalytic activities of these catalysts were evaluated for methylene blue (MB) degradation under the visible light with and without the assistance of NaHSO3. The results indicated that Mn-LDO showed superior photocatalytic decomposition capability of MB than that of C-LDO. Moreover, Mn-LDO showed much higher photocatalytic degradation efficiency of MB in the presence of NaHSO3 than only the single Mn-LDO degradation system. The stability and recyclability of the catalyst were also investigated.

引用

页码：235 / 241

页数：7

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