Highly Efficient Photocatalytic Z-Scheme Hydrogen Production over Oxygen-Deficient WO3–x Nanorods supported Zn0.3Cd0.7S Heterostructure

Abstract The demand for clean renewable energy is increasing due to depleting fossil fuels and environmental concerns. Photocatalytic hydrogen production through water splitting is one such promising route to meet global energy demands with carbon free technology. Alternative photocatalysts avoiding...

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Autores principales:	Ammar Bin Yousaf, M. Imran, Syed Javaid Zaidi, Peter Kasak
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5c5aa415fa1a40e98696665dddb43679
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spelling	oai:doaj.org-article:5c5aa415fa1a40e98696665dddb436792021-12-02T11:40:58ZHighly Efficient Photocatalytic Z-Scheme Hydrogen Production over Oxygen-Deficient WO3–x Nanorods supported Zn0.3Cd0.7S Heterostructure10.1038/s41598-017-06808-62045-2322https://doaj.org/article/5c5aa415fa1a40e98696665dddb436792017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-06808-6https://doaj.org/toc/2045-2322Abstract The demand for clean renewable energy is increasing due to depleting fossil fuels and environmental concerns. Photocatalytic hydrogen production through water splitting is one such promising route to meet global energy demands with carbon free technology. Alternative photocatalysts avoiding noble metals are highly demanded. Herein, we fabricated heterostructure consist of oxygen-deficient WO3–x nanorods with Zn0.3Cd0.7S nanoparticles for an efficient Z-Scheme photocatalytic system. Our as obtained heterostructure showed photocatalytic H2 evolution rate of 352.1 μmol h−1 with apparent quantum efficiency (AQY) of 7.3% at λ = 420 nm. The photocatalytic hydrogen production reaches up to 1746.8 μmol after 5 hours process in repeatable manner. The UV-Visible diffuse reflectance spectra show strong absorption in the visible region which greatly favors the photocatalytic performance. Moreover, the efficient charge separation suggested by electrochemical impedance spectroscopy and photocurrent response curves exhibit enhancement in H2 evolution rate. The strong interface contact between WO3–x nanorods and Zn0.3Cd0.7S nanoparticles ascertained from HRTEM images also play an important role for the emigration of electron. Our findings provide possibilities for the design and development of new Z-scheme photocatalysts for highly efficient hydrogen production.Ammar Bin YousafM. ImranSyed Javaid ZaidiPeter KasakNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ammar Bin Yousaf M. Imran Syed Javaid Zaidi Peter Kasak Highly Efficient Photocatalytic Z-Scheme Hydrogen Production over Oxygen-Deficient WO3–x Nanorods supported Zn0.3Cd0.7S Heterostructure
description	Abstract The demand for clean renewable energy is increasing due to depleting fossil fuels and environmental concerns. Photocatalytic hydrogen production through water splitting is one such promising route to meet global energy demands with carbon free technology. Alternative photocatalysts avoiding noble metals are highly demanded. Herein, we fabricated heterostructure consist of oxygen-deficient WO3–x nanorods with Zn0.3Cd0.7S nanoparticles for an efficient Z-Scheme photocatalytic system. Our as obtained heterostructure showed photocatalytic H2 evolution rate of 352.1 μmol h−1 with apparent quantum efficiency (AQY) of 7.3% at λ = 420 nm. The photocatalytic hydrogen production reaches up to 1746.8 μmol after 5 hours process in repeatable manner. The UV-Visible diffuse reflectance spectra show strong absorption in the visible region which greatly favors the photocatalytic performance. Moreover, the efficient charge separation suggested by electrochemical impedance spectroscopy and photocurrent response curves exhibit enhancement in H2 evolution rate. The strong interface contact between WO3–x nanorods and Zn0.3Cd0.7S nanoparticles ascertained from HRTEM images also play an important role for the emigration of electron. Our findings provide possibilities for the design and development of new Z-scheme photocatalysts for highly efficient hydrogen production.
format	article
author	Ammar Bin Yousaf M. Imran Syed Javaid Zaidi Peter Kasak
author_facet	Ammar Bin Yousaf M. Imran Syed Javaid Zaidi Peter Kasak
author_sort	Ammar Bin Yousaf
title	Highly Efficient Photocatalytic Z-Scheme Hydrogen Production over Oxygen-Deficient WO3–x Nanorods supported Zn0.3Cd0.7S Heterostructure
title_short	Highly Efficient Photocatalytic Z-Scheme Hydrogen Production over Oxygen-Deficient WO3–x Nanorods supported Zn0.3Cd0.7S Heterostructure
title_full	Highly Efficient Photocatalytic Z-Scheme Hydrogen Production over Oxygen-Deficient WO3–x Nanorods supported Zn0.3Cd0.7S Heterostructure
title_fullStr	Highly Efficient Photocatalytic Z-Scheme Hydrogen Production over Oxygen-Deficient WO3–x Nanorods supported Zn0.3Cd0.7S Heterostructure
title_full_unstemmed	Highly Efficient Photocatalytic Z-Scheme Hydrogen Production over Oxygen-Deficient WO3–x Nanorods supported Zn0.3Cd0.7S Heterostructure
title_sort	highly efficient photocatalytic z-scheme hydrogen production over oxygen-deficient wo3–x nanorods supported zn0.3cd0.7s heterostructure
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/5c5aa415fa1a40e98696665dddb43679
work_keys_str_mv	AT ammarbinyousaf highlyefficientphotocatalyticzschemehydrogenproductionoveroxygendeficientwo3xnanorodssupportedzn03cd07sheterostructure AT mimran highlyefficientphotocatalyticzschemehydrogenproductionoveroxygendeficientwo3xnanorodssupportedzn03cd07sheterostructure AT syedjavaidzaidi highlyefficientphotocatalyticzschemehydrogenproductionoveroxygendeficientwo3xnanorodssupportedzn03cd07sheterostructure AT peterkasak highlyefficientphotocatalyticzschemehydrogenproductionoveroxygendeficientwo3xnanorodssupportedzn03cd07sheterostructure
_version_	1718395517772234752

Highly Efficient Photocatalytic Z-Scheme Hydrogen Production over Oxygen-Deficient WO3–x Nanorods supported Zn0.3Cd0.7S Heterostructure

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