Synthesis of hierarchical ZnV                         2                         O                         6                          nanosheets with enhanced activity and stability for visible light driven CO                         2                          reduction to solar fuels

Abdullah Bafaqeer; Muhammad Tahir; Nor Aishah Saidina Amin

doi:10.1016/j.apsusc.2017.11.116

Synthesis of hierarchical ZnV ₂ O ₆ nanosheets with enhanced activity and stability for visible light driven CO ₂ reduction to solar fuels

Abdullah Bafaqeer
, Muhammad Tahir
, Nor Aishah Saidina Amin

Research output: Contribution to journal › Article › peer-review

70 Citations (Scopus)

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.

Original language	English
Pages (from-to)	953-962
Number of pages	10
Journal	Applied Surface Science
Volume	435
DOIs	https://doi.org/10.1016/j.apsusc.2017.11.116
Publication status	Published - Mar 30 2018
Externally published	Yes

Keywords

CO reduction
Methanol
Nanosheets
Visible light
ZnO-V O
ZnV O

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
General Physics and Astronomy
Surfaces and Interfaces
Surfaces, Coatings and Films

Access to Document

10.1016/j.apsusc.2017.11.116

Cite this

Bafaqeer, A., Tahir, M., & Amin, N. A. S. (2018). Synthesis of hierarchical ZnV ₂ O ₆ nanosheets with enhanced activity and stability for visible light driven CO ₂ reduction to solar fuels Applied Surface Science, 435, 953-962. https://doi.org/10.1016/j.apsusc.2017.11.116

Synthesis of hierarchical ZnV ₂ O ₆ nanosheets with enhanced activity and stability for visible light driven CO ₂ reduction to solar fuels . / Bafaqeer, Abdullah; Tahir, Muhammad; Amin, Nor Aishah Saidina.
In: Applied Surface Science, Vol. 435, 30.03.2018, p. 953-962.

Research output: Contribution to journal › Article › peer-review

Bafaqeer, A, Tahir, M & Amin, NAS 2018, ' Synthesis of hierarchical ZnV ₂ O ₆ nanosheets with enhanced activity and stability for visible light driven CO ₂ reduction to solar fuels ', Applied Surface Science, vol. 435, pp. 953-962. https://doi.org/10.1016/j.apsusc.2017.11.116

Bafaqeer A, Tahir M, Amin NAS. Synthesis of hierarchical ZnV ₂ O ₆ nanosheets with enhanced activity and stability for visible light driven CO ₂ reduction to solar fuels Applied Surface Science. 2018 Mar 30;435:953-962. doi: 10.1016/j.apsusc.2017.11.116

Bafaqeer, Abdullah ; Tahir, Muhammad ; Amin, Nor Aishah Saidina. / Synthesis of hierarchical ZnV ₂ O ₆ nanosheets with enhanced activity and stability for visible light driven CO ₂ reduction to solar fuels In: Applied Surface Science. 2018 ; Vol. 435. pp. 953-962.

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title = " Synthesis of hierarchical ZnV 2 O 6 nanosheets with enhanced activity and stability for visible light driven CO 2 reduction to solar fuels ",

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.",

keywords = "CO reduction, Methanol, Nanosheets, Visible light, ZnO-V O, ZnV O",

author = "Abdullah Bafaqeer and Muhammad Tahir and Amin, \{Nor Aishah Saidina\}",

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N2 - 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.

AB - 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.

KW - CO reduction

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