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HomeKey Engineering MaterialsKey Engineering Materials Vols. 609-610Comparative Photocatalytic Properties of Cu2O from...

Comparative Photocatalytic Properties of Cu₂O from Octahedron to Sphere Structures

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Abstract:

Cu₂O, a p-type semiconductor, has broad potential applications, especially as a visible-light photocatalyst. This paper presents a simple water-bath reflux to prepare Cu₂O micro/nanoparticles. The morphology evolution from intact octahedrons to surface-pitted spheres was obtained by adjusting reducing agent and additive. Reflectance spectra show similar photo-absorption intensity and the same range from 250 nm to 650 nm. However, they perform different photocatalytic activity. Intact octahedron has the best photodegradation ability and next is vertex-and edge-damaged octahedron, the lowest for vertex-free polyhedrons and surface-pitted spheres. The enhanced photocatalytic activity for intact octahedrons should to be attributed to its surface characteristics of high index. Our study not only provides a simple method for controllable preparation of Cu₂O micro/nanoparticles with different morphologies but also confirms the effect of morphologies on photocatalytic activity.

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Micro-Nano Technology XV

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Periodical:

Key Engineering Materials (Volumes 609-610)

Pages:

45-50

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.609-610.45

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Online since:

April 2014

Authors:

Li Min Qian, Jie Zhou, Chu Zheng, Di Chen, Bi Shen, Yong Kun Liu, Li Xiao Wang, Yan Hua Tong*

Keywords:

Cu₂O, Octahedron, Photo-Absorption, Photocatalytic Activity

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* - Corresponding Author

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