TaCxOy: A photocatalytic promoter on g-C3N4 for visible-light Cr6+ reduction

被引：17
|
作者：
Zhang, Nannan [1 ]
Li, Guangshe [1 ]
Wang, Shuo [1 ]
Xu, Xingliang [1 ]
Li, Liping [1 ]
机构：
[1] Jilin Univ, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Jilin, Peoples R China
来源：
CATALYSIS COMMUNICATIONS | 2019年 / 119卷
关键词：
TaCxOy/g-C3N4; Photocatalytic Cr6+ reduction; Enhanced charge separation; Favorable band alignment; Stable in recycling; CARBON NITRIDE NANOSHEETS; HEXAVALENT CHROMIUM; HYDROGEN EVOLUTION; HIGHLY EFFICIENT; TANTALUM OXIDE;
D O I：
10.1016/j.catcom.2018.10.020
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：
Graphitic carbon nitride (g-C3N4) is a promising visible light photocatalyst but bears low activity due to its high recombination rate of electron-hole pairs. Here, trace amorphous Ta2O5 modified TaC (TaCxOy) is in situ anchored on g-C3N4 (TaCxOy/g-C3N4) as an efficient photocatalyst to enhance charge separation. Introducing of TaC(x)O(y)endows TaCxOy/g-C3N4 with favorable band alignment and more exposed active sites. Specifically, 4.4 wt%TaCxOy/g-C3N4 embraces an optimal Cr6+ reduction conversion of 100% in 35 min, 49.3 and 2.4-fold enhancement, compared with bare TaCxOy/g-C3N4. Our work indicates that TaCxOy, could be a promoter in water treatment and photo-energy conversion.
引用
收藏
页码：129 / 133
页数：5
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