Enhanced visible light photocatalytic degradation of metoprolol by Ag-Bi2WO6-graphene composite

被引：49

作者：

Yu, Yong ^{[1
]}

Liu, Yin ^{[2
,3
]}

Wu, Xiaoqin ^{[1
]}

Weng, Zhihuan ^{[4
]}

Hou, Yang ^{[5
]}

Wu, Laosheng ^{[1
]}

机构：

[1] Univ Calif Riverside, Dept Environm Sci, Riverside, CA 92521 USA

[2] Tianjin Univ Technol, Sch Environm Sci & Safety Engn, Tianjin 300384, Peoples R China

[3] UC Riverside, Extens Ctr, Riverside, CA 92507 USA

[4] Dalian Univ Technol, Sch Chem Engn, Dalian 116024, Peoples R China

[5] Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2015年 / 142卷

关键词：

Photocatalysis; Bi2WO6; Ag; Graphene; Metoprolol; ONE-STEP SYNTHESIS; RHODAMINE-B; BI2WO6; PHARMACEUTICALS; NANOPARTICLES; PERFORMANCE; PRODUCTS; KINETICS; REMOVAL; FILM;

D O I：

10.1016/j.seppur.2014.12.025

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Novel visible light driven Ag-Bi2WO6-graphene nanocomposite photocatalysts were synthesized by hydrothermal method. The optimized photocatalysts were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and ultraviolet visible diffuse reflection spectroscopy (DRS). The photocatalysts exhibited a significantly enhanced photocatalytic performance compared with pure Bi2WO6 under simulated solar light. The optimal product, 5 mol% Ag-Bi2WO6-2.5 weight% graphene, showed the highest photocatalytic activity to degrade metoprolol. Metoprolol was 100% eliminated after 2 h simulated solar light irradiation in a solution with photocatalyst amount of 1 mg/mL, suggesting the potential application of this material in wastewater treatment. Eight reaction intermediate products were observed by LC-MS/MS and a tentative pathway of metoprolol degradation was proposed. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：1 / 7

页数：7