Green hydrothermal synthesis of CeO2 NWs–reduced graphene oxide hybrid with enhanced photocatalytic activity. Issue 1 (19th February 2014)

• Record Type: Journal Article
• Authors: Huang, K.; Lei, M.; Wang, Y.J.; Liang, C.; Ye, C.X.; Zhao, X.S.; Li, Y.F.; Zhang, R.; Fan, D.Y.; Wang, Y.G.
• Is Part Of: Powder diffraction. Volume 29:Issue 1(2014)
• Page Start: 8
• Page End: 13
• Publication Date: 2014-02-19
• Subjects: Powder metallurgy -- Periodicals; Materials -- Analysis -- Periodicals; 620.1127
• DOI: 10.1017/S0885715613000663
• Languages: English
• ISSNs: 0885-7156

Abstract

<abstract abstract-type="normal"> <title> <x content-type="archive" xml:space="preserve">Abstract</x> </title> <p>In this study, CeO₂ nanowires–reduced graphene oxide hybrids (CeO₂ NWs–RGO) were synthesized by a green hydrothermal method using CeO₂ NWs and graphene oxide (GO) as raw materials. During the process of reduction of GO, hydrothermal condition with supercritical water provides thermal and chemical factors to synthesize RGO. The photocatalytic experimental results show that the CeO₂ NWs–RGO hybrids exhibit enhanced photocatalytic activity for degradation of Rhodamine B (RhB) under UV-light irradiation. It is found that the degree of photocatalytic activity enhancement strongly depends on the mass ratio of RGO in the hybrids, and the remarkable photocatalytic activity is 20 times that of pristine CeO₂ NWs when the loading amount of RGO is 8.0 wt%. The enhancement of photocatalytic activity can be attributed to the excellently elevated absorption ability for the dye through <italic>π</italic>–<italic>π</italic> conjugation as well as the effective inhibition of the recombination of photogenerated electrons because of the electronic interaction between CeO₂ NWs and RGO sheets.</p> </abstract>