Reduced graphene oxide wrapped Cu2O supported on C3N4: An efficient visible light responsive semiconductor photocatalyst

APL Materials - Tập 3 Số 10 - 2015
Sundaram Ganesh Babu1, R. Vinoth1, P. Surya Narayana1, Detlef W. Bahnemann2, Bernaurdshaw Neppolian1
1SRM University 1 SRM Research Institute, , Kattankulathur, Chennai 603203, India
2Leibniz University of Hannover 2 Institute of Technical Chemistry, , D-30167 Hannover, Germany

Tóm tắt

Herein, Cu2O spheres were prepared and encapsulated with reduced graphene oxide (rGO). The Cu2O–rGO–C3N4 composite covered the whole solar spectrum with significant absorption intensity. rGO wrapped Cu2O loading caused a red shift in the absorption with respect to considering the absorption of bare C3N4. The photoluminescence study confirms that rGO exploited as an electron transport layer at the interface of Cu2O and C3N4 heterojunction. Utmost, ∼2 fold synergistic effect was achieved with Cu2O–rGO–C3N4 for the photocatalytic reduction of 4-nitrophenol to 4-aminophenol in comparison with Cu2O–rGO and C3N4. The Cu2O–rGO–C3N4 photocatalyst was reused for four times without loss in its activity.

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See supplementary material at http://dx.doi.org/10.1063/1.4928286 for detailed experimental procedures for the preparation of materials, instrumental parameters and some of the results.

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Tập 3 Số 10

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