WO3–ZnO and CuO–ZnO nanocomposites as highly efficient photoanodes under visible light illumination
| Autor: | Gulmaral Tukyei, Soo Cho, Yerkezhan Amangeldinova, Yoon-Hwae Hwang, Timur Sh. Atabaev, Dongyun Lee, Hyung Kook Kim, Dong-Myeong Shin, Nang Dinh Nguyen, Jaebeom Lee, Trang Nguyen Thi Thuy, Dayoung Yoo, Yana Sissembayeva |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Nanostructure Photoluminescence Nanocomposite business.industry Scanning electron microscope Band gap Mechanical Engineering Bioengineering 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Mechanics of Materials Photocatalysis Optoelectronics Reversible hydrogen electrode General Materials Science Electrical and Electronic Engineering 0210 nano-technology business Visible spectrum |
| Zdroj: | Nanotechnology. 31:255702 |
| ISSN: | 1361-6528 0957-4484 |
| DOI: | 10.1088/1361-6528/ab7d75 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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