Title: Synthesis of Cu2O nanoparticle films at room temperature for solar water splitting
Authors: Lin, Yan-Gu
Hsu, Yu-Kuei
Lin, Yu -Chang
Chang, Yu-Hsueh
Chen, San -Yuan
Chen, Ying-Chu
Department of Materials Science and Engineering
Keywords: Zinc oxide;Copper(I) oxide;Nanoparticles;Photoelectrochemical
Issue Date: 1-Jun-2016
Abstract: A Cu2O nanoparticle film using ZnO nanorods as a sacrificial scaffold was fabricated near 23 degrees C, for applications in photoelectrochemical (PEC) water splitting. Three chemical solutions were utilized to convert ZnO nanorods to a Cu2O nanoparticle film - solutions of CuCl2 and NaOH, NaBH4 and NaOH, respectively. The structural evolution from ZnO through Cu(OH)(2) and metallic Cu to Cu2O phase was analyzed at each stage with X-ray diffraction and X-ray absorption spectra. The energy bandgap was deduced from IPCE; the concentration of carriers and flat-band of a Cu2O nanoparticle film were obtained from a Mott-Schottky plot. Significantly, the Cu2O nanoparticle film exhibited a useful PEC response to water oxidation. This nanostructure synthesized with no energy requirement can not only illustrate a great prospect for solar generation of hydrogen but also offer a blueprint for the future design of photocatalysts. (C) 2016 Elsevier Inc. All rights reserved.
URI: http://dx.doi.org/10.1016/j.jcis.2016.03.010
ISSN: 0021-9797
DOI: 10.1016/j.jcis.2016.03.010
Volume: 471
Begin Page: 76
End Page: 80
Appears in Collections:Articles