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Issue 2, 2018
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Direct growth of Cr-doped TiO2 nanosheet arrays on stainless steel substrates with visible-light photoelectrochemical properties

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Abstract

Cr-Doped TiO2 nanosheet arrays grown directly on a stainless steel substrate were successfully achieved by a simple and facile solvothermal reaction without adding Cr-dopant. The stainless steel substrate served as not only the site for the deposition of the TiO2 film but also the Cr source. The Cr-doped TiO2 film prepared at 180 °C for 36 h consists of ultrathin nanosheet arrays (a length of ∼860 nm) with a high surface area of 180.77 m2 g−1. The long reaction time results in a red shift of the absorption edges and also decreases in band gap energies due to a small amount of Cr3+ doping. The unique nanostructures and appropriate composition endowed the Cr–TiO2 nanosheet arrays with excellent performances in photoelectrochemistry under UV illumination. The photocurrent densities under visible light illumination of the as-prepared Cr–TiO2 nanosheet arrays are markedly enhanced after high-temperature calcination, which can be attributed to the improved crystallinity, wider visible light response, better binding force and increase of oxygen vacancies of the films.

Graphical abstract: Direct growth of Cr-doped TiO2 nanosheet arrays on stainless steel substrates with visible-light photoelectrochemical properties

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Publication details

The article was received on 07 Oct 2017, accepted on 07 Dec 2017 and first published on 07 Dec 2017


Article type: Paper
DOI: 10.1039/C7NJ03830E
Citation: New J. Chem., 2018,42, 1309-1315
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    Direct growth of Cr-doped TiO2 nanosheet arrays on stainless steel substrates with visible-light photoelectrochemical properties

    G. Mao, M. Xu, S. Yao, B. Zhou and Q. Liu, New J. Chem., 2018, 42, 1309
    DOI: 10.1039/C7NJ03830E

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