In situ one-step hydrothermal synthesis of oxygen-containing groups-modified g-C3N4 for the improved photocatalytic H2-evolution performance

In situ one-step hydrothermal synthesis of oxygen-containing groups-modified g-C3N4 for the... 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 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Surface Science Elsevier

In situ one-step hydrothermal synthesis of oxygen-containing groups-modified g-C3N4 for the improved photocatalytic H2-evolution performance

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Publisher
Elsevier
Copyright
Copyright © 2017 Elsevier B.V.
ISSN
0169-4332
eISSN
1873-5584
D.O.I.
10.1016/j.apsusc.2017.08.050
Publisher site
See Article on Publisher Site

Abstract

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

Journal

Applied Surface ScienceElsevier

Published: Jan 1, 2018

References

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