CO2 photocatalytic reduction to fuels: Enhanced methanol selectivity by loading Ag on NaNbO3

Abul Lais; M. A. Gondal; F. F. Al-Adel

doi:10.1063/1.5042380

CO₂ photocatalytic reduction to fuels: Enhanced methanol selectivity by loading Ag on NaNbO₃

Abul Lais, M. A. Gondal^*, F. F. Al-Adel

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

3 Scopus citations

Abstract

Pure and Ag-loaded NaNbO₃ were synthesized, and characterized by PL, Raman, XRD and FE-SEM. They were subsequently applied for the photocatalytic CO₂ reduction to fuels process, wherein methanol and formic acid were detected. Loading silver significantly enhanced the methanol product selectivity over that of formic acid, which is economically-favorable since methanol is an energy-dense value-added fuel. We hypothesize that silver acts as an electron-trapping centre, which increases the surface electron density. The enhanced electron availability on silver possibly facilitates multi-electron transfers. The formation of methanol from CO₂ requires more electrons (6 e^-) than formic acid (2 e^-) per molecule of product formed, which likely accounts for the preferential formation of methanol over formic acid upon silver loading.

Original language	English
Title of host publication	6th Saudi International Meeting on Frontiers of Physics 2018, SIMFP 2018
Editors	Jabir Hakami, Abdelrahman Mahdy, Zaka-ul-Islam Mujahid, Nurdogan Can, Mahmoud Mahgoub, Ali Al-Kamli, Galib Omar Souadi
Publisher	American Institute of Physics Inc.
ISBN (Electronic)	9780735416857
DOIs	https://doi.org/10.1063/1.5042380
State	Published - 15 Jun 2018

Publication series

Name	AIP Conference Proceedings
Volume	1976
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Bibliographical note

Publisher Copyright:
© 2018 Author(s).

Keywords

Methanol Selectivity
Photocatalytic CO Reduction to Methanol
Reaction Mechanism
Sustainable Energy

ASJC Scopus subject areas

General Physics and Astronomy

UN SDGs

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

Access to Document

10.1063/1.5042380

Cite this

Lais, A., Gondal, M. A., & Al-Adel, F. F. (2018). CO₂ photocatalytic reduction to fuels: Enhanced methanol selectivity by loading Ag on NaNbO₃. In J. Hakami, A. Mahdy, Z.-I. Mujahid, N. Can, M. Mahgoub, A. Al-Kamli, & G. O. Souadi (Eds.), 6th Saudi International Meeting on Frontiers of Physics 2018, SIMFP 2018 Article 020013 (AIP Conference Proceedings; Vol. 1976). American Institute of Physics Inc.. https://doi.org/10.1063/1.5042380

Lais, Abul ; Gondal, M. A. ; Al-Adel, F. F. / CO₂ photocatalytic reduction to fuels : Enhanced methanol selectivity by loading Ag on NaNbO₃. 6th Saudi International Meeting on Frontiers of Physics 2018, SIMFP 2018. editor / Jabir Hakami ; Abdelrahman Mahdy ; Zaka-ul-Islam Mujahid ; Nurdogan Can ; Mahmoud Mahgoub ; Ali Al-Kamli ; Galib Omar Souadi. American Institute of Physics Inc., 2018. (AIP Conference Proceedings).

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title = "CO2 photocatalytic reduction to fuels: Enhanced methanol selectivity by loading Ag on NaNbO3",

abstract = "Pure and Ag-loaded NaNbO3 were synthesized, and characterized by PL, Raman, XRD and FE-SEM. They were subsequently applied for the photocatalytic CO2 reduction to fuels process, wherein methanol and formic acid were detected. Loading silver significantly enhanced the methanol product selectivity over that of formic acid, which is economically-favorable since methanol is an energy-dense value-added fuel. We hypothesize that silver acts as an electron-trapping centre, which increases the surface electron density. The enhanced electron availability on silver possibly facilitates multi-electron transfers. The formation of methanol from CO2 requires more electrons (6 e-) than formic acid (2 e-) per molecule of product formed, which likely accounts for the preferential formation of methanol over formic acid upon silver loading.",

keywords = "Methanol Selectivity, Photocatalytic CO Reduction to Methanol, Reaction Mechanism, Sustainable Energy",

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Lais, A , Gondal, MA & Al-Adel, FF 2018, CO₂ photocatalytic reduction to fuels: Enhanced methanol selectivity by loading Ag on NaNbO₃. in J Hakami, A Mahdy, Z-I Mujahid, N Can, M Mahgoub, A Al-Kamli & GO Souadi (eds), 6th Saudi International Meeting on Frontiers of Physics 2018, SIMFP 2018., 020013, AIP Conference Proceedings, vol. 1976, American Institute of Physics Inc. https://doi.org/10.1063/1.5042380

CO₂ photocatalytic reduction to fuels: Enhanced methanol selectivity by loading Ag on NaNbO₃. / Lais, Abul ; Gondal, M. A.; Al-Adel, F. F.
6th Saudi International Meeting on Frontiers of Physics 2018, SIMFP 2018. ed. / Jabir Hakami; Abdelrahman Mahdy; Zaka-ul-Islam Mujahid; Nurdogan Can; Mahmoud Mahgoub; Ali Al-Kamli; Galib Omar Souadi. American Institute of Physics Inc., 2018. 020013 (AIP Conference Proceedings; Vol. 1976).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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T1 - CO2 photocatalytic reduction to fuels

T2 - Enhanced methanol selectivity by loading Ag on NaNbO3

AU - Lais, Abul

AU - Gondal, M. A.

AU - Al-Adel, F. F.

PY - 2018/6/15

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N2 - Pure and Ag-loaded NaNbO3 were synthesized, and characterized by PL, Raman, XRD and FE-SEM. They were subsequently applied for the photocatalytic CO2 reduction to fuels process, wherein methanol and formic acid were detected. Loading silver significantly enhanced the methanol product selectivity over that of formic acid, which is economically-favorable since methanol is an energy-dense value-added fuel. We hypothesize that silver acts as an electron-trapping centre, which increases the surface electron density. The enhanced electron availability on silver possibly facilitates multi-electron transfers. The formation of methanol from CO2 requires more electrons (6 e-) than formic acid (2 e-) per molecule of product formed, which likely accounts for the preferential formation of methanol over formic acid upon silver loading.

AB - Pure and Ag-loaded NaNbO3 were synthesized, and characterized by PL, Raman, XRD and FE-SEM. They were subsequently applied for the photocatalytic CO2 reduction to fuels process, wherein methanol and formic acid were detected. Loading silver significantly enhanced the methanol product selectivity over that of formic acid, which is economically-favorable since methanol is an energy-dense value-added fuel. We hypothesize that silver acts as an electron-trapping centre, which increases the surface electron density. The enhanced electron availability on silver possibly facilitates multi-electron transfers. The formation of methanol from CO2 requires more electrons (6 e-) than formic acid (2 e-) per molecule of product formed, which likely accounts for the preferential formation of methanol over formic acid upon silver loading.

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KW - Photocatalytic CO Reduction to Methanol

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Lais A , Gondal MA, Al-Adel FF. CO₂ photocatalytic reduction to fuels: Enhanced methanol selectivity by loading Ag on NaNbO₃. In Hakami J, Mahdy A, Mujahid ZI, Can N, Mahgoub M, Al-Kamli A, Souadi GO, editors, 6th Saudi International Meeting on Frontiers of Physics 2018, SIMFP 2018. American Institute of Physics Inc. 2018. 020013. (AIP Conference Proceedings). doi: 10.1063/1.5042380