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Issue 78, 2016, Issue in Progress
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Photoelectrochemical properties of Ti-doped hematite nanosheet arrays decorated with CdS nanoparticles

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Abstract

Hematite (α-Fe2O3), with a relatively narrow bandgap (2.0–2.2 eV), is well-suited for potential application as a photoanode in photoelectrochemical (PEC) cells. Unfortunately, it suffers from severe bulk carrier recombination and low conductivity. This study provides a way to overcome these shortages by constructing a novel electrode system comprised of vertically aligned Ti-doped hematite nanosheet arrays decorated with cadmium sulfide nanoparticles (Ti-Fe2O3/CdS). Ti doping improves the conductivity of hematite and simultaneously extends the spectral responsive range. The incorporation of CdS nanoparticles further facilitates the charge separation and transfer process. Subsequently, the fabricated Ti-Fe2O3/CdS electrode achieves 6-fold enhancement of photocurrent density with respect to pristine Fe2O3 and excellent operation stability. Meanwhile, an obvious negative shift of photocurrent onset potential by 500 mV is observed.

Graphical abstract: Photoelectrochemical properties of Ti-doped hematite nanosheet arrays decorated with CdS nanoparticles

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Article information


Submitted
09 May 2016
Accepted
27 Jul 2016
First published
28 Jul 2016

RSC Adv., 2016,6, 74234-74240
Article type
Paper

Photoelectrochemical properties of Ti-doped hematite nanosheet arrays decorated with CdS nanoparticles

X. Xie, K. Li and W. Zhang, RSC Adv., 2016, 6, 74234
DOI: 10.1039/C6RA11978F

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