Citation: Yi-Lan CHEN, Yu-Xian XU, Dai-Feng LIN, Yong-Jin LUO, Hun XUE, Qing-Hua CHEN. Insight into Superior Visible Light Photocatalytic Activity for Degradation of Dye over Corner-truncated Cubic Ag₂O Decorated TiO₂ Hollow Nanofibers[J]. Chinese Journal of Structural Chemistry, ;2020, 39(3): 588-597. doi: 10.14102/j.cnki.0254–5861.2011–2733 shu

Insight into Superior Visible Light Photocatalytic Activity for Degradation of Dye over Corner-truncated Cubic Ag₂O Decorated TiO₂ Hollow Nanofibers

Yi-Lan CHEN ^{a, b} ,
Yu-Xian XU ^a ,
Dai-Feng LIN ^a ,
Yong-Jin LUO ^a ,
Hun XUE ^a ,
Qing-Hua CHEN ^{a, c,,}

a.
Fujian Key Laboratory of Pollution Control & Resource Reuse, College of Environment Science and Engineering, Fujian Normal University, Fuzhou 350007, China
b.
School of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou 350118, China
c.
Fujian Polytechnic Normal University, Fuqing 350300, China

Corresponding author: Qing-Hua CHEN, cqhuar@fjnu.edu.cn
Received Date: 9 January 2020
Accepted Date: 10 February 2020

Fund Project: the National Natural Science Foundation of China 21407025the Natural Science Foundation of Fujian Province 2016J01047the Projects of Fujian Provincial Department of Education JT180350

Figures(10)

Ag₂O/TiO₂ heterostructure has been constructed by loading corner-truncated cubic Ag₂O on the TiO₂ hollow nanofibers via an electrospinning-precipitation method. Compared to individual Ag₂O and TiO₂, Ag₂O/TiO₂ heterostructure exhibits obviously enhanced photocatalytic activity for the photodegradation of methyl orange (MO) under visible light irradiation. The composite with molar ratio of Ag₂O to TiO₂ at 4:10 exhibits the best photocatalytic performance with MO degraded 93% in 6 min. The superior activity is mainly attributed to the surface plasmon resonance (SPR) effect of metallic Ag in-situ produced during the photocatalytic process, which can favor electron transfer to the conduction band of TiO₂. This leads to the efficient separation of photogenerated carriers, thus a superior photodegradation activity. Moreover, the energy band alignments of Ag₂O/TiO₂ heterostructure are calculated, which provides strong support for the proposed mechanism.
- visible light photocatalysis,
- corner-truncated cubic Ag₂O,
- TiO₂ hollow nanofibers,
- surface plasmon resonance,
- heterostructure
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Insight into Superior Visible Light Photocatalytic Activity for Degradation of Dye over Corner-truncated Cubic Ag2O Decorated TiO2 Hollow Nanofibers

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通讯作者: 陈斌, bchen63@163.com

Insight into Superior Visible Light Photocatalytic Activity for Degradation of Dye over Corner-truncated Cubic Ag₂O Decorated TiO₂ Hollow Nanofibers