Copolymerization with 2,4,6-Triaminopyrimidine for the Rolling-up the Layer Structure, Tunable Electronic Properties, and Photocatalysis of g-C3N4

被引：338

作者：

Ho, Wingkei ^{[1
,5
,6
]}

Zhang, Zizhong ^{[1
,2
]}

Lin, Wei ^{[3
]}

Huang, Shuping ^{[4
]}

Zhang, Xianwen ^{[2
]}

Wang, Xuxu ^{[2
]}

Huang, Yu ^{[5
,6
]}

机构：

[1] Hong Kong Inst Educ, Dept Sci & Environm Studies, Hong Kong, Hong Kong, Peoples R China

[2] Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China

[3] Univ Calif San Diego, Dept Chem & Biochem, San Diego, CA 92093 USA

[4] Univ S Dakota, Dept Chem, Vermillion, SD 57069 USA

[5] Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710075, Peoples R China

[6] Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2015年 / 7卷 / 09期

关键词：

g-C3N4; copolymerization; nitrogen substitution; tubular configuration; photocatalysis; GRAPHITIC CARBON NITRIDE; HYDROGEN-PEROXIDE; DOPED G-C3N4; PHOTOREACTIVITY; SEMICONDUCTORS; NANOCOMPOSITES; OXIDATION; OXYGEN; WATER;

D O I：

10.1021/am509213x

中图分类号：

TB3 [工程材料学];

学科分类号：

082905 [生物质能源与材料];

摘要：

Copolymerization with 2,4,6-triaminopyrimidine (TAP) is developed for precise substitution of one nitrogen with carbon atom in the triazine ring of polymeric g-C3N4. Direct incorporation of C4N2 ring from TAP into the network retains the structural features of g-C3N4, but induces the rolling-up of g-C3N4 sheets into tubular configuration. The band gap energy is narrowed from 2.7 to 2.4 eV by a negative shift of valence band of the g-C3N4 photocatalyst, which enhances charge-carrier migration and separation, leading to higher photocatalytic activity for NO gas pollutant removal. It is attributed to the decrease of the pi-deficiency and the generation of imbalanced electron density in pi-electron conjugated units of g-C3N4 by TAP incorporation. This work provides a significant technique for precise control of heteroatom in the framework of g-C3N4 to finely adjust its intrinsic electronic properties and its photocatalytic properties.

引用

页码：5497 / 5505

页数：9

共 33 条

[1]

Facile bulk production of highly blue fluorescent graphitic carbon nitride quantum dots and their application as highly selective and sensitive sensors for the detection of mercuric and iodide ions in aqueous media [J].