In situ loading of Ag(2)WO(4) on ultrathin g-C(3)N(4) nanosheets with highly enhanced photocatalytic performance

Yunfeng Li; Renxi Jin; Xu Fang; Yang Yang; Man Yang; Xianchun Liu; Yan Xing; Shuyan Song

doi:10.1016/j.jhazmat.2016.04.011

In situ loading of Ag(2)WO(4) on ultrathin g-C(3)N(4) nanosheets with highly enhanced photocatalytic performance

J Hazard Mater. 2016 Aug 5:313:219-28. doi: 10.1016/j.jhazmat.2016.04.011. Epub 2016 Apr 7.

Authors

Yunfeng Li¹, Renxi Jin¹, Xu Fang¹, Yang Yang¹, Man Yang¹, Xianchun Liu¹, Yan Xing², Shuyan Song³

Affiliations

¹ Jilin Provincial Key Laboratory of Advanced Energy Materials, Department of Chemistry, Northeast Normal University, Changchun 130024, PR China.
² Jilin Provincial Key Laboratory of Advanced Energy Materials, Department of Chemistry, Northeast Normal University, Changchun 130024, PR China. Electronic address: xingy202@nenu.edu.cn.
³ State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China.

PMID: 27107322
DOI: 10.1016/j.jhazmat.2016.04.011

Abstract

The g-C3N4 nanosheets (g-C3N4NS) exhibit more excellent property than common bulk g-C3N4 (g-C3N4-B) due to their large surface areas, improved electron transport ability and well dispersion in water. In this work, ultrathin g-C3N4NS with a thickness of about 2.7nm have been synthesized by a simple thermal exfoliation of bulk g-C3N4, and then Ag2WO4 nanoparticles are in situ loaded on their surface to construct the Ag2WO4/g-C3N4NS heterostructured photocatalysts. Due to their unique physicochemical properties, the as-prepared heterostructures possess a fast interfacial charge transfer and increased lifetime of photo-excited charge carriers, and exhibit much higher photocatalytic activity. Under visible light irradiation, the optimum photocatalytic activity of Ag2WO4/g-C3N4NS composites is almost 53.6 and 26.5 times higher than that of pure g-C3N4-B and Ag2WO4/g-C3N4-B heterostructures towards the degradation of rhodamine B, respectively, and is almost 30.6 and 9.8 times higher towards the degradation of methyl orange, respectively. In addition, the natural sunlight photocatalytic activities of the as-prepared samples are also investigated.

Keywords: Composite materials; Heterojunction; Nanosheets; Photocatalysis; g-C(3)N(4).

Publication types

Research Support, Non-U.S. Gov't