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Synthesis of hierarchical ZnV2O6 nanosheets with enhanced activity and stability for visible light driven CO2 reduction to solar fuels

Bafaqeer, A. and Tahir, M. and Amin, N. A. S. (2018) Synthesis of hierarchical ZnV2O6 nanosheets with enhanced activity and stability for visible light driven CO2 reduction to solar fuels. Applied Surface Science, 435 . pp. 953-962. ISSN 0169-4332

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Official URL: http://dx.doi.org/10.1016/j.apsusc.2017.11.116

Abstract

Hierarchical nanostructures have lately garnered enormous attention because of their remarkable performances in energy storage and catalysis applications. In this study, novel hierarchical ZnV 2 O 6 nanosheets, formulated by one-step solvothermal method, for enhanced photocatalytic CO 2 reduction with H 2 O to solar fuels has been investigated. The structure and properties of the catalysts were characterized by XRD, FESEM, TEM, BET, UV–vis, Raman and PL spectroscopy. The hierarchical ZnV 2 O 6 nanosheets show excellent performance towards photoreduction of CO 2 with H 2 O to CH 3 OH, CH 3 COOH and HCOOH under visible light. The main product yield, CH 3 OH of 3253.84 µmol g-cat -1 was obtained over ZnV 2 O 6 , 3.4 times the amount of CH 3 OH produced over the ZnO/V 2 O 5 composite (945.28 µmol g-cat -1 ). In addition, CH 3 OH selectivity of 39.96% achieved over ZnO/V 2 O 5 , increased to 48.78% in ZnV 2 O 6 nanosheets. This significant improvement in photo-activity over ZnV 2 O 6 structure was due to hierarchical structure with enhanced charge separation by V 2 O 5 . The obtained ZnV 2 O 6 hierarchical nanosheets exhibited excellent photocatalytic stability for selective CH 3 OH production.

Item Type:Article
Uncontrolled Keywords:methanol, nanosheets, visible light
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Energy Engineering
ID Code:81812
Deposited By: Narimah Nawil
Deposited On:29 Sep 2019 16:13
Last Modified:29 Sep 2019 16:13

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