WO3-ZnO and CuO-ZnO nanocomposites as highly efficient photoanodes under visible light illumination

We prepared ZnO nanocomposites with WO3 or CuO nanostructures to improve the photocatalytic performance of ZnO nanostructures. Characterization of the nanocomposites using scanning electron microscopy, x-ray diffraction, UV-vis spectrometry and photoluminescence revealed the morphologies and wide li...

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Bibliographic Details
Published in:Nanotechnology 2020-04, Vol.31 (25)
Main Authors: Thuy, Trang Nguyen Thi, Cho, Soo Kyung, Amangeldinova, Yerkezhan, Yoo, Dayoung, Tukyei, Gulmaral, Sissembayeva, Yana, Atabaev, Timur Sh, Lee, Dongyun, Lee, Jaebeom, Nguyen, Nang Dinh, Kim, Hyung Kook, Shin, Dong-Myeong, Hwang, Yoon-Hwae
Format: Article
Language:English
Subjects:
CuO
nanocomposites
photoelectrochemical water splitting cells
visible range photoanodes
WO3
ZnO
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Summary:We prepared ZnO nanocomposites with WO3 or CuO nanostructures to improve the photocatalytic performance of ZnO nanostructures. Characterization of the nanocomposites using scanning electron microscopy, x-ray diffraction, UV-vis spectrometry and photoluminescence revealed the morphologies and wide light absorption range of the materials. The highest current densities of WO3/ZnO and CuO/ZnO nanocomposites were 1.28 mA cm−2 and 2.49 mA cm−2 at 1.23 V (versus a reversible hydrogen electrode) under AM 1.5 100 mW cm−2, which are ~1.2- and 3.5-fold greater than those of bare ZnO nanostructures, respectively. The easy fabrication process suggests that nanocomposites with narrow bandgap materials, such as WO3 and CuO, will improve the performance of electrochemical and optoelectrical devices such as dye-sensitized solar cells and biosensors.
ISSN:0957-4484
1361-6528
DOI:10.1088/1361-6528/ab7d75