Brand new P-doped g-C3N4: enhanced photocatalytic activity for H2 evolution and Rhodamine B degradation under visible light

被引：567

作者：

Zhou, Yajun ^{[1
]}

Zhang, Lingxia ^{[1
]}

Liu, Jianjun ^{[1
]}

Fan, Xiangqian ^{[1
]}

Wang, Beizhou ^{[1
]}

Wang, Min ^{[1
]}

Ren, Wenchao ^{[1
]}

Wang, Jin ^{[1
]}

Li, Mengli ^{[1
]}

Shi, Jianlin ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2015年 / 3卷 / 07期

基金：

中国国家自然科学基金;

关键词：

GRAPHITIC CARBON NITRIDE; HYDROGEN-EVOLUTION; GRAPHENE; PHOTOREACTIVITY; EXFOLIATION; CATALYSIS;

D O I：

10.1039/c4ta05292g

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：

P-doped g-C3N4 has been successfully synthesized using hexachlorocyclotriphosphazene, a low cost and environmentally benign compound, as phosphorus source, and guanidiniumhydrochloride as g-C3N4 precursor, via a thermally induced copolymerization route. The obtained P-doped g-C3N4 showed excellent photocatalytic performance both in the photoreduction of H2O to produce H-2 and the photodegradation of Rhodamine B (RhB). H-2 evolution rate on modified g-C3N4 reached 50.6 mu mol h(-1), which is 2.9 times higher than that of the pure g-C3N4. RhB ( 10 mg L-1) was completely photodegraded within 10 min. The structure and texture properties of the P-doped g-C3N4 have been investigated in detail by XRD, FTIR, TEM, EDS and STEM. With the results of XPS and P-31 NMR, a possible existing form of P atom in the framework g-C3N4 has been put forward. The introduction of a P atom significantly changes the electronic property of g-C3N4 and suppresses the recombination of photogenerated charge carriers, thus improving its photocatalytic performance.

引用

页码：3862 / 3867

页数：6

共 38 条

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