Brand new P-doped g-C3N4: enhanced photocatalytic activity for H2 evolution and Rhodamine B degradation under visible lightElectronic supplementary information (ESI) available: Analytical data. See DOI: 10.1039/c4ta05292g

• Main Authors: Zhou, Yajun, Zhang, Lingxia, Liu, Jianjun, Fan, Xiangqian, Wang, Beizhou, Wang, Min, Ren, Wenchao, Wang, Jin, Li, Mengli, Shi, Jianlin
• Format: Journal Article
• Language: English
• Published: 03.02.2015
• ISSN: 2050-7488; 2050-7496
• DOI: 10.1039/c4ta05292g

P-doped g-C 3 N 4 has been successfully synthesized using hexachlorocyclotriphosphazene, a low cost and environmentally benign compound, as phosphorus source, and guanidiniumhydrochloride as g-C 3 N 4 precursor, via a thermally induced copolymerization route. The obtained P-doped g-C 3 N 4 showed excellent photocatalytic performance both in the photoreduction of H 2 O to produce H 2 and the photodegradation of Rhodamine B (RhB). H 2 evolution rate on modified g-C 3 N 4 reached 50.6 μmol h −1 , which is 2.9 times higher than that of the pure g-C 3 N 4 . RhB (10 mg L −1 ) was completely photodegraded within 10 min. The structure and texture properties of the P-doped g-C 3 N 4 have been investigated in detail by XRD, FTIR, TEM, EDS and STEM. With the results of XPS and 31 P NMR, a possible existing form of P atom in the framework g-C 3 N 4 has been put forward. The introduction of a P atom significantly changes the electronic property of g-C 3 N 4 and suppresses the recombination of photogenerated charge carriers, thus improving its photocatalytic performance. P-doped g-C 3 N 4 has been successfully synthesized using hexachlorocyclotriphosphazene, a low cost and environmentally benign compound, as phosphorus source, and guanidiniumhydrochloride as g-C 3 N 4 precursor, via a thermally induced copolymerization route.