Citation: Jingjing Yang, Baoshun Liu, Xiujian Zhao. A visible-light-active Au-Cu(I)@Na₂Ti₆O₁₃ nanostructured hybrid pasmonic photocatalytic membrane for acetaldehyde elimination[J]. Chinese Journal of Catalysis, ;2017, 38(12): 2048-2055. doi: 10.1016/S1872-2067(17)62954-1 shu

A visible-light-active Au-Cu(I)@Na₂Ti₆O₁₃ nanostructured hybrid pasmonic photocatalytic membrane for acetaldehyde elimination

State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, Hubei, China

Received Date: 1 October 2017
Revised Date: 31 October 2017

Fund Project: This work was supported by the National Natural Science Foundation of China (51772230, 51461135004), Hubei Foreign Science and Technology Cooperation Project (2017AHB059), and the Japan Society for the Promotion of Science (JSPS) for an Invitation Fellowship for Foreign Researchers (L16531).

The present article reports a novel self-standing nanostructured Au-Cu(I)@Na₂Ti₆O₁₃ plasmonic photocatalytic membrane, which is prepared by a hydrothermal reaction followed by a simple subsequent heat treatment process. The morphological structure, elemental composition, crystalline phases, and optical properties of the membrane were studied in detail by field-emission scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction, and ultraviolet-visible spectroscopy. Compared with that of a pure Na₂Ti₆O₁₃ membrane, the Au-Cu(I)@Na₂Ti₆O₁₃ membrane displayed much higher photocatalytic activity for the decomposition of acetaldehyde, a typical volatile organic compound, under visible light illumination. It was found that the photocatalytic activity of the Au-Cu(I)@Na₂Ti₆O₁₃ membrane increased as the amount of Au was increased. The membrane loaded with 2.85 wt% Au showed the highest photocatalytic activity in the decomposition of acetaldehyde of the investigated materials. We found that in the photocatalyst membrane, Na₂Ti₆O₁₃ acted as a support material, Au displayed plasmonic absorption, and Cu(I) behaved as a co-catalyst. The present membrane materials can avoid the self-aggregation typically observed during the course of photocatalytic reactions. As a result, they can be easily separated, recycled, and reactivated after their practical application, making these functional materials attractive for use in air cleaning applications.
- Na₂Ti₆O₁₃,
- Au modification,
- Cu(I) nanocluster modification,
- Synergistic effect,
- Photocatalysis
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A visible-light-active Au-Cu(I)@Na2Ti6O13 nanostructured hybrid pasmonic photocatalytic membrane for acetaldehyde elimination

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通讯作者: 陈斌, bchen63@163.com

A visible-light-active Au-Cu(I)@Na₂Ti₆O₁₃ nanostructured hybrid pasmonic photocatalytic membrane for acetaldehyde elimination