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

Abdullah Bafaqeer; Muhammad Tahir; Nor Aishah Saidina Amin

doi:10.1016/j.apsusc.2017.11.116

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

Abdullah Bafaqeer
, Muhammad Tahir^*
, Nor Aishah Saidina Amin

^*Corresponding author for this work

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

67 Scopus citations

Abstract

Hierarchical nanostructures have lately garnered enormous attention because of their remarkable performances in energy storage and catalysis applications. In this study, novel hierarchical ZnV₂O₆ nanosheets, formulated by one-step solvothermal method, for enhanced photocatalytic CO₂ reduction with H₂O 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 ZnV₂O₆ nanosheets show excellent performance towards photoreduction of CO₂ with H₂O to CH₃OH, CH₃COOH and HCOOH under visible light. The main product yield, CH₃OH of 3253.84 μmol g-cat⁻¹ was obtained over ZnV₂O₆, 3.4 times the amount of CH₃OH produced over the ZnO/V₂O₅ composite (945.28 μmol g-cat⁻¹). In addition, CH₃OH selectivity of 39.96% achieved over ZnO/V₂O₅, increased to 48.78% in ZnV₂O₆ nanosheets. This significant improvement in photo-activity over ZnV₂O₆ structure was due to hierarchical structure with enhanced charge separation by V₂O₅. The obtained ZnV₂O₆ hierarchical nanosheets exhibited excellent photocatalytic stability for selective CH₃OH 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
State	Published - 30 Mar 2018
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2017 Elsevier B.V.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy
SDG 13 Climate Action

Keywords

CO reduction
Methanol
Nanosheets
Visible light
ZnO-VO
ZnVO

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films

Access to Document

10.1016/j.apsusc.2017.11.116

Cite this

@article{387f6776746849609cca9643dd3bdb8f,

title = "Synthesis of hierarchical ZnV2O6 nanosheets with enhanced activity and stability for visible light driven CO2 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 ZnV2O6 nanosheets, formulated by one-step solvothermal method, for enhanced photocatalytic CO2 reduction with H2O 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 ZnV2O6 nanosheets show excellent performance towards photoreduction of CO2 with H2O to CH3OH, CH3COOH and HCOOH under visible light. The main product yield, CH3OH of 3253.84 μmol g-cat−1 was obtained over ZnV2O6, 3.4 times the amount of CH3OH produced over the ZnO/V2O5 composite (945.28 μmol g-cat−1). In addition, CH3OH selectivity of 39.96\% achieved over ZnO/V2O5, increased to 48.78\% in ZnV2O6 nanosheets. This significant improvement in photo-activity over ZnV2O6 structure was due to hierarchical structure with enhanced charge separation by V2O5. The obtained ZnV2O6 hierarchical nanosheets exhibited excellent photocatalytic stability for selective CH3OH production.",

keywords = "CO reduction, Methanol, Nanosheets, Visible light, ZnO-VO, ZnVO",

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

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2018",

month = mar,

day = "30",

doi = "10.1016/j.apsusc.2017.11.116",

language = "English",

volume = "435",

pages = "953--962",

journal = "Applied Surface Science",

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TY - JOUR

T1 - Synthesis of hierarchical ZnV2O6 nanosheets with enhanced activity and stability for visible light driven CO2 reduction to solar fuels

AU - Bafaqeer, Abdullah

AU - Tahir, Muhammad

AU - Amin, Nor Aishah Saidina

PY - 2018/3/30

Y1 - 2018/3/30

N2 - Hierarchical nanostructures have lately garnered enormous attention because of their remarkable performances in energy storage and catalysis applications. In this study, novel hierarchical ZnV2O6 nanosheets, formulated by one-step solvothermal method, for enhanced photocatalytic CO2 reduction with H2O 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 ZnV2O6 nanosheets show excellent performance towards photoreduction of CO2 with H2O to CH3OH, CH3COOH and HCOOH under visible light. The main product yield, CH3OH of 3253.84 μmol g-cat−1 was obtained over ZnV2O6, 3.4 times the amount of CH3OH produced over the ZnO/V2O5 composite (945.28 μmol g-cat−1). In addition, CH3OH selectivity of 39.96% achieved over ZnO/V2O5, increased to 48.78% in ZnV2O6 nanosheets. This significant improvement in photo-activity over ZnV2O6 structure was due to hierarchical structure with enhanced charge separation by V2O5. The obtained ZnV2O6 hierarchical nanosheets exhibited excellent photocatalytic stability for selective CH3OH 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 ZnV2O6 nanosheets, formulated by one-step solvothermal method, for enhanced photocatalytic CO2 reduction with H2O 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 ZnV2O6 nanosheets show excellent performance towards photoreduction of CO2 with H2O to CH3OH, CH3COOH and HCOOH under visible light. The main product yield, CH3OH of 3253.84 μmol g-cat−1 was obtained over ZnV2O6, 3.4 times the amount of CH3OH produced over the ZnO/V2O5 composite (945.28 μmol g-cat−1). In addition, CH3OH selectivity of 39.96% achieved over ZnO/V2O5, increased to 48.78% in ZnV2O6 nanosheets. This significant improvement in photo-activity over ZnV2O6 structure was due to hierarchical structure with enhanced charge separation by V2O5. The obtained ZnV2O6 hierarchical nanosheets exhibited excellent photocatalytic stability for selective CH3OH production.

KW - CO reduction

KW - Methanol

KW - Nanosheets

KW - Visible light

KW - ZnO-VO

KW - ZnVO

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DO - 10.1016/j.apsusc.2017.11.116

M3 - Article

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