Article history: Surface modiﬁcation of g-C N is one of the most effective strategies to boost its photocatalytic H - 3 4 2 Received 9 July 2017 evolution performance via promoting the interfacial catalytic reactions. In this study, an in situ one-step Received in revised form 5 August 2017 hydrothermal method was developed to prepare the oxygen-containing groups-modiﬁed g-C N (OG/g- 3 4 Accepted 7 August 2017 C N ) by a facile and green hydrothermal treatment of bulk g-C N in pure water without any additives. 3 4 3 4 Available online 14 August 2017 It was found that the hydrothermal treatment (180 C) not only could greatly increase the speciﬁc sur- 2 −1 face area (from 2.3 to 69.8 m g ), but also caused the formation of oxygen-containing groups ( OH Keywords: and C O) on the OG/g-C N surface, via the interlayer delamination and intralayer depolymerization of 3 4 g-C N 3 4 bulk g-C N . Photocatalytic experimental results indicated that after hydrothermal treatment, the resul- 3 4 Modiﬁcation tant OG/g-C N samples showed an obviously improved H -evolution performance. Especially, when the 3 4 2 Hydrothermal treatment hydrothermal time was 6 h, the
Applied Surface Science – Elsevier
Published: Jan 1, 2018
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