Issue 36, 2016, Issue in Progress
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RSC Advances

ZnO/ZnS heterostructures for hydrogen production by photoelectrochemical water splitting†

R. Sánchez-Tovar,a   R. M. Fernández-Domene,a   M. T. Montañés,a   A. Sanz-Marcoa  and  J. Garcia-Antón*a  

* Corresponding authors

a Ingeniería Electroquímica y Corrosión (IEC), Departamento de Ingeniería Química y Nuclear, ETSI Industriales, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
E-mail: jgarciaa@iqn.upv.es
Fax: +34-96-387 76 39
Tel: +34-96-387 76 32

Abstract

This work studies the photoelectrochemical behavior of novel ZnO/ZnS heterostructures obtained by means of anodization in water and glycerol/water/NH4F electrolytes with different Na2S additions under controlled hydrodynamic conditions. For this purpose different techniques such as Field Emission Scanning Electronic Microscopy (FE-SEM) with EDX, Raman spectroscopy and photoelectrochemical water splitting tests under standard AM 1.5 conditions have been carried out. The obtained results showed that the hydrodynamic conditions promoted an ordered nanotubular morphology which facilitates electron–hole separation and consequently, the photoelectrochemical activity for water splitting is enhanced. Additionally, the effect of glycerol in the anodization solutions seems to be beneficial for increasing the dark current photostability.

Graphical abstract: ZnO/ZnS heterostructures for hydrogen production by photoelectrochemical water splitting

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Article information

DOI
https://doi.org/10.1039/C6RA03501A
Article type
Paper
Submitted
06 Feb 2016
Accepted
16 Mar 2016
First published
18 Mar 2016

RSC Adv., 2016,6, 30425-30435

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ZnO/ZnS heterostructures for hydrogen production by photoelectrochemical water splitting

R. Sánchez-Tovar, R. M. Fernández-Domene, M. T. Montañés, A. Sanz-Marco and J. Garcia-Antón, RSC Adv., 2016, 6, 30425 DOI: 10.1039/C6RA03501A

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