A novel and highly efficient photocatalyst based on P 25- graphdiyne nanocomposite

Wang, Shuo and Yi, Luoxin and Halpert, Jonathan E. and Lai, Xiaoyong and Liu, Yuanyuan and Cao, Hongbin and Wang, Dan and Yu, Ranbo and Li, Yuliang (2012) A novel and highly efficient photocatalyst based on P 25- graphdiyne nanocomposite. Small, 8 (2). pp. 265-271. ISSN 1613-6810

Abstract

Titania nanoparticles (P25) are successfully chemically bonded with graphdiyne (GD) nanosheets by a facile hydrothermal treatment, to form a novel nanocomposite photocatalyst. The as-prepared P25-GD nanocomposite exhibits higher photocatalytic activity for degrading methylene blue under UV irradiation than not only P25 and P25-carbon nanotube composite but also the current well-known P25-graphene composite photocatalysts. Moreover, P25-GD also shows considerable visible-light-driven photocatalytic activity, since the formation of chemical bonds between P25 and GD effectively decreases the bandgap of P25 and extends its absorbable light range. The photocatalytic activity of P25-GD can be adjusted by changing the content of GD in composites and the optimized value is about 0.6 wt%. Such a nanocomposite photocatalyst might find potential application in a wide range of fields including air purification and waste water treatment. Graphdiyne nanosheets are chemically bonded with titania nanoparticles (P25) by a facile hydrothermal treatment. The nanocomposite has a higher photocatalytic activity than P25-graphene. In the photodegradation of methylene blue (MB), graphdiyne acts as an acceptor of the photogenerated electrons. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to Published version, in accordance with the copyright policy of the publisher.
Faculty / Department / School: No Faculty
Date Deposited: 13 Jun 2017 04:32
Last Modified: 02 Nov 2017 04:49
Uncontrolled Keywords: graphdiyne; hydrothermal synthesis; nanocomposites; photocatalysis; titania; carbon-nanotube composites
Fields of Research : 09 Engineering > 0912 Materials Engineering > 091205 Functional Materials
Identification Number or DOI: 10.1002/smll.201101686
URI: http://eprints.usq.edu.au/id/eprint/31986

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