Hetero-structure CdS-CuFe2O4 as an efficient visible light active photocatalyst for photoelectrochemical reduction of CO2 to methanol

In the present paper, hetero-structured CdS–CuFe2O4 nanocomposite was synthesized by a facial method to convert CO2 to methanol in the photoelectrochemical (PEC) system. The synthesized catalysts were characterised by XRD, Raman spectroscopy, TEM, FESEM, EDX, XPS, UV–vis and PL spectroscopy. The CdS...

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Main Authors:	Tarek, Mostafa, Karim, Kaykobad Md. Rezaul, Sarkar, Shaheen M., Deb, Anjan, Ong, Huei Ruey, Hamidah, Abdullah, Cheng, C. K., Khan, Maksudur R.
Format:	Article
Language:	English
Published:	Elsevier 2019
Subjects:	TA Engineering (General). Civil engineering (General) TP Chemical technology
Online Access:	http://umpir.ump.edu.my/id/eprint/25979/ http://umpir.ump.edu.my/id/eprint/25979/ http://umpir.ump.edu.my/id/eprint/25979/ http://umpir.ump.edu.my/id/eprint/25979/1/Hetero-structure%20CdSeCuFe2O4%20as%20an%20efficient%20visible%20light%20active1.pdf

id	ump-25979
recordtype	eprints
spelling	ump-259792019-10-14T06:24:42Z http://umpir.ump.edu.my/id/eprint/25979/ Hetero-structure CdS-CuFe2O4 as an efficient visible light active photocatalyst for photoelectrochemical reduction of CO2 to methanol Tarek, Mostafa Karim, Kaykobad Md. Rezaul Sarkar, Shaheen M. Deb, Anjan Ong, Huei Ruey Hamidah, Abdullah Cheng, C. K. Khan, Maksudur R. TA Engineering (General). Civil engineering (General) TP Chemical technology In the present paper, hetero-structured CdS–CuFe2O4 nanocomposite was synthesized by a facial method to convert CO2 to methanol in the photoelectrochemical (PEC) system. The synthesized catalysts were characterised by XRD, Raman spectroscopy, TEM, FESEM, EDX, XPS, UV–vis and PL spectroscopy. The CdS–CuFe2O4 photocatalyst showed ~6 times higher photocurrent compared to the CuFe2O4 at −0.35 V vs. NHE of bias potential under CO2 environment as revealed by chronoamperometry results. Incident photon to current efficiency (IPCE) for CuFe2O4 and CdS–CuFe2O4 at 470 nm were found as 7.28 and 12.09%, respectively which clearly indicates the proficiency of CdS–CuFe2O4 heterojunction to absorb the visible light resulting in e−/h+ generation and the charge transfer during PEC CO2 reduction. Products in aqueous and gas phases were analysed which confirmed the selective production of methanol with trace amounts of H2 and CO. The CdS–CuFe2O4 catalyst demonstrated 72% and 16.9% of Faradaic and quantum efficiencies, respectively in terms of methanol production where a methanol yield of 23.80 μmole/Lcm2 was achieved in CO2 saturated aqueous solution of NaHCO3 (0.1 M). Detailed investigation revealed that the conduction band (CB) of the CdS in the heterojunction catalyst could act as a CO2 reduction site by trapping photogenerated electrons from the highly photosensitive CuFe2O4 while the water oxidation could take place at the valance band (VB) of CuFe2O4. Elsevier 2019-10-08 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/25979/1/Hetero-structure%20CdSeCuFe2O4%20as%20an%20efficient%20visible%20light%20active1.pdf Tarek, Mostafa and Karim, Kaykobad Md. Rezaul and Sarkar, Shaheen M. and Deb, Anjan and Ong, Huei Ruey and Hamidah, Abdullah and Cheng, C. K. and Khan, Maksudur R. (2019) Hetero-structure CdS-CuFe2O4 as an efficient visible light active photocatalyst for photoelectrochemical reduction of CO2 to methanol. International Journal of Hydrogen Energy, 44 (48). pp. 26271-26284. ISSN 0360-3199 https://doi.org/10.1016/j.ijhydene.2019.08.074 https://doi.org/10.1016/j.ijhydene.2019.08.074
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TA Engineering (General). Civil engineering (General) TP Chemical technology
spellingShingle	TA Engineering (General). Civil engineering (General) TP Chemical technology Tarek, Mostafa Karim, Kaykobad Md. Rezaul Sarkar, Shaheen M. Deb, Anjan Ong, Huei Ruey Hamidah, Abdullah Cheng, C. K. Khan, Maksudur R. Hetero-structure CdS-CuFe2O4 as an efficient visible light active photocatalyst for photoelectrochemical reduction of CO2 to methanol
description	In the present paper, hetero-structured CdS–CuFe2O4 nanocomposite was synthesized by a facial method to convert CO2 to methanol in the photoelectrochemical (PEC) system. The synthesized catalysts were characterised by XRD, Raman spectroscopy, TEM, FESEM, EDX, XPS, UV–vis and PL spectroscopy. The CdS–CuFe2O4 photocatalyst showed ~6 times higher photocurrent compared to the CuFe2O4 at −0.35 V vs. NHE of bias potential under CO2 environment as revealed by chronoamperometry results. Incident photon to current efficiency (IPCE) for CuFe2O4 and CdS–CuFe2O4 at 470 nm were found as 7.28 and 12.09%, respectively which clearly indicates the proficiency of CdS–CuFe2O4 heterojunction to absorb the visible light resulting in e−/h+ generation and the charge transfer during PEC CO2 reduction. Products in aqueous and gas phases were analysed which confirmed the selective production of methanol with trace amounts of H2 and CO. The CdS–CuFe2O4 catalyst demonstrated 72% and 16.9% of Faradaic and quantum efficiencies, respectively in terms of methanol production where a methanol yield of 23.80 μmole/Lcm2 was achieved in CO2 saturated aqueous solution of NaHCO3 (0.1 M). Detailed investigation revealed that the conduction band (CB) of the CdS in the heterojunction catalyst could act as a CO2 reduction site by trapping photogenerated electrons from the highly photosensitive CuFe2O4 while the water oxidation could take place at the valance band (VB) of CuFe2O4.
format	Article
author	Tarek, Mostafa Karim, Kaykobad Md. Rezaul Sarkar, Shaheen M. Deb, Anjan Ong, Huei Ruey Hamidah, Abdullah Cheng, C. K. Khan, Maksudur R.
author_facet	Tarek, Mostafa Karim, Kaykobad Md. Rezaul Sarkar, Shaheen M. Deb, Anjan Ong, Huei Ruey Hamidah, Abdullah Cheng, C. K. Khan, Maksudur R.
author_sort	Tarek, Mostafa
title	Hetero-structure CdS-CuFe2O4 as an efficient visible light active photocatalyst for photoelectrochemical reduction of CO2 to methanol
title_short	Hetero-structure CdS-CuFe2O4 as an efficient visible light active photocatalyst for photoelectrochemical reduction of CO2 to methanol
title_full	Hetero-structure CdS-CuFe2O4 as an efficient visible light active photocatalyst for photoelectrochemical reduction of CO2 to methanol
title_fullStr	Hetero-structure CdS-CuFe2O4 as an efficient visible light active photocatalyst for photoelectrochemical reduction of CO2 to methanol
title_full_unstemmed	Hetero-structure CdS-CuFe2O4 as an efficient visible light active photocatalyst for photoelectrochemical reduction of CO2 to methanol
title_sort	hetero-structure cds-cufe2o4 as an efficient visible light active photocatalyst for photoelectrochemical reduction of co2 to methanol
publisher	Elsevier
publishDate	2019
url	http://umpir.ump.edu.my/id/eprint/25979/ http://umpir.ump.edu.my/id/eprint/25979/ http://umpir.ump.edu.my/id/eprint/25979/ http://umpir.ump.edu.my/id/eprint/25979/1/Hetero-structure%20CdSeCuFe2O4%20as%20an%20efficient%20visible%20light%20active1.pdf
first_indexed	2023-09-18T22:40:11Z
last_indexed	2023-09-18T22:40:11Z
_version_	1777416862333665280

Hetero-structure CdS-CuFe2O4 as an efficient visible light active photocatalyst for photoelectrochemical reduction of CO2 to methanol

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