期刊
ACS CATALYSIS
卷 3, 期 5, 页码 912-919出版社
AMER CHEMICAL SOC
DOI: 10.1021/cs4000624
关键词
polyimide; photocatalysis; band structure; water splitting; dye degradation
资金
- NSFC [21273111, 21273106]
The electronic: band structure of a semiconductor photocatalyst intrinsically controls its level of conduction band (CB) and valence band (VB) and, thus, influences its activity for different photocatalytic reactions. Here, we report a simple bottom-up, strategy to rationally tune the band structure of graphitic carbon nitride (g-C3N4). By incorporating electron-deficient pyromellitic dianhydride (PMDA) monomer into the network of g-C3N4, the,VB position can be largely decreased and, thus, gives a strong photooxidation capability. Consequently, the modified photocatalyst shows preferential activity for water, oxidation over water reduction in comparison with g-C3N4. More strikingly, the active species involved in the photodegradation of methyl orange switches from photogenerated electrons to holes after band structure engineering. This Work may provide guidance on designing efficient polymer photocatalysts with the desirable electronic structure for specific photoreactions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据