Efficient solar photocatalyst based on Ag3PO4/graphene nanosheets composite for photocatalytic decolorization of dye pollutants

被引：5

作者：

Jiang, R. ^{[1
,2
]}

Zhu, H. -Y. ^{[1
,2
]}

Li, J. -B. ^{[2
]}

Fu, F. -Q. ^{[1
]}

Yao, J. ^{[1
]}

Liang, X. -X. ^{[2
]}

Guo, R. -Q. ^{[3
]}

Zeng, G. -M. ^{[4
]}

机构：

[1] Taizhou Univ, Zhejiang Prov Key Lab Plant Evolutionary Ecol & C, 1139 Municipal Govt Ave, Taizhou 318000, Zhejiang, Peoples R China

[2] Univ No British Columbia, Environm Engn Program, Prince George, BC V2N 4Z9, Canada

[3] Taizhou Univ, Coll Phys & Elect Engn, Taizhou 318000, Peoples R China

[4] Hunan Univ, Minist Educ, Key Lab Environm Biol & Pollut Control, Changsha 410082, Hunan, Peoples R China

来源：

JOURNAL OF THE IRANIAN CHEMICAL SOCIETY | 2016年 / 13卷 / 06期

关键词：

Graphene nanosheets; Silver orthophosphate; Photocatalysis; Dye; Water treatment; HIGHLY EFFICIENT; HYDROGEN-PRODUCTION; AG3PO4; COMPOSITES; CONGO RED; GRAPHENE; DEGRADATION; WATER; NANOCOMPOSITES; PERFORMANCE; STABILITY;

D O I：

10.1007/s13738-016-0831-0

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Silver orthophosphate-graphene nanosheets composite (Ag3PO4-GNs) has been fabricated using a facile hydrothermal method. The Ag3PO4-GNs were characterized using XRD, UV-vis DRS and SEM. The photocatalytic activity of Ag3PO4-GNs was evaluated by photocatalytic decolorization of dye aqueous solutions under simulated solar light irradiation. It was observed that Ag3PO4 nanoparticles in Ag3PO4-GNs were attached on the surface of graphene nanosheets.The introduction of graphene nanosheets enhanced remarkably the visible light absorption region of Ag3PO4-GNs compared with bare Ag3PO4. The photocatalytic activity of Ag3PO4-GNs is nearly twice as high as that of the pure Ag3PO4. The removal efficiency can reach more than 90 % by Ag3PO4-GNs under simulated solar light irradiation within 25 min, which might mainly be attributed to high adsorption capacity, extended light absorption range and efficient charge separation. After irradiation for 60 min, 84.70 % TOC mineralization was achieved by Ag3PO4-GNs. Based on the results of detection of active species, the direct oxidization of dye pollutants in aqueous solution by holes takes a major role in the whole decolorization process by Ag3PO4-GNs. As a result, Ag3PO4-GNs with the high photocatalytic activity are proven to be an excellent light photocatalyst for potentially scalable removal of dyes in aqueous solutions and other environmental remediation under simulated solar light irradiation.

引用

页码：1167 / 1174

页数：8

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