An AgI@g-C3N4 hybrid core@shell structure: Stable and enhanced photocatalytic degradation

被引：53

作者：

Liu, Li ^{[1
,2
]}

Qi, Yuehong ^{[2
]}

Yang, Jinyi ^{[2
]}

Cui, Wenquan ^{[2
]}

Li, Xingang ^{[1
]}

Zhang, Zisheng ^{[1
]}

机构：

[1] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China

[2] North China Univ Sci & Technol, Hebei Prov Key Lab Inorgan Nonmetall Mat, Coll Chem Engn, Tangshan 063009, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2015年 / 358卷

基金：

中国国家自然科学基金;

关键词：

Photocatalysis; Agl@g-C3N4; Core@shell; Degradation; GRAPHITIC CARBON NITRIDE; VISIBLE-LIGHT IRRADIATION; HETEROSTRUCTURED PHOTOCATALYSTS; HYDROGEN GENERATION; FACILE FABRICATION; AGI NANOPARTICLES; METHYLENE-BLUE; C3N4; X; COMPOSITE; PERFORMANCE;

D O I：

10.1016/j.apsusc.2015.07.212

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 visible-light-active material AgI@g-C3N4 was prepared by ultrasonication/chemisorption method. The core@shell structure AgI@g-C3N4 catalyst showed high efficiency for the degradation of MB under visible light irradiation (lambda>420 nm). Nearly 96.5% of MB was degraded after 120 min of irradiation in the presence of the AgI@g-C3N4 photocatalyst. Superior stability was also observed in the cyclic runs indicating that the as prepared hybrid composite is highly desirable for the remediation of organic contaminated wastewaters. The improved photocatalytic performance is due to synergistic effects at the interface of AgI and g-C3N4 which can effectively accelerate the charge separation and reinforce the photostability of hybrid composite. The possible mechanism for the photocatalytic activity of AgI@g-C3N4 was tentatively proposed. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：319 / 327

页数：9

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