Photocatalytic enhancement of hybrid C3N4/TiO2 prepared via ball milling method

被引：145
作者：
Zhou, Jianwei [1 ,2 ]
Zhang, Mo [2 ]
Zhu, Yongfa [2 ]
机构：
[1] Xinxiang Univ, Inst Energy & Fuel, Xinxiang 453003, Peoples R China
[2] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China
来源：
PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2015年 / 17卷 / 05期
基金：
国家高技术研究发展计划(863计划); 美国国家科学基金会;
关键词：
GRAPHITIC CARBON NITRIDE; VISIBLE-LIGHT PHOTOCATALYSIS; TITANIA PHOTOCATALYST; SURFACE HYBRIDIZATION; HYDROGEN EVOLUTION; TIO2; COMPOSITE; DEGRADATION; OXIDATION; POWDER;
D O I：
10.1039/c4cp05173d
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：
C3N4/TiO2 hybrid photocatalysts with highly enhanced photocatalytic performance were prepared by a facile ball milling method. A layered structure of g-C3N4 was formed on the surface of TiO2. The mechanochemical process can promote the dispersion of C3N4 on the surface of TiO2 particles, to form a single layer hybrid structure and a multi-layer core-shell structure. The photocatalytic activities of C3N4/TiO2 under visible and UV light irradiation were 3.0 and 1.3 times those of pure g-C3N4 and TiO2, respectively. Under visible light and UV irradiation, the photocurrent response was up to 2.5 times and 1.5 times as high as that of the pure TiO2 and C3N4, respectively. The evident performance enhancement of g-C3N4-TiO2 was mainly attributed to high separation and migration efficiency of electron-hole pairs.
引用
收藏
页码：3647 / 3652
页数：6
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