Molecule-induced gradient electronic potential distribution on a polymeric photocatalyst surface and improved photocatalytic performance

被引：31

作者：

Guo, Yong ^{[1
,2
]}

Kong, Fei ^{[1
,2
]}

Wang, Cuicui ^{[1
,2
]}

Chu, Sheng ^{[1
,2
]}

Yang, Juncheng ^{[1
,2
]}

Wang, Ying ^{[1
,2
,3
]}

Zou, Zhigang ^{[1
,3
]}

机构：

[1] Nanjing Univ, Natl Lab Solid State Microstruct, ERERC, Nanjing 210093, Jiangsu, Peoples R China

[2] Nanjing Univ, Sch Chem & Chem Engn, Nanjing 210093, Jiangsu, Peoples R China

[3] Kunshan Innovat Inst Nanjing Univ, Kunshan 215300, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2013年 / 1卷 / 16期

关键词：

GRAPHITIC CARBON NITRIDE; HYDROGEN EVOLUTION; ACID;

D O I：

10.1039/c3ta10528h

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 polymeric photocatalyst was synthesized by coupling p-nitrobenzoic acid (PNA) onto graphitic carbon nitride (g-C3N4). The as-synthesized polymeric photocatalyst (PNA-g-C3N4) has a higher performance in the photodegradation of methyl orange (MO) than does g-C3N4. UV results show that PNA-g-C3N4 can harvest more solar energy than g-C3N4. Fluorescence results indicate that the separation efficiency of photo-induced electrons and holes in PNA-g-C3N4 is higher than that in g-C3N4. According to the experimental results and theoretical calculations, coupling PNA with g-C3N4 can narrow the band gap and introduce a gradient in the electronic potential distribution on the polymeric photocatalyst surface. The former results in the polymeric photocatalyst harvesting more solar energy, while the latter will favor the separation of photo-induced electrons and holes.

引用

页码：5142 / 5147

页数：6

共 28 条

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