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Fabrication and Photocatalytic Activity of Cu2O Nanobelts on Nanoporous Cu Substrate

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Acta Metallurgica Sinica (English Letters) Aims and scope

Abstract

In this paper, we report the fabrication of the photocatalysts composed of Cu2O nanobelts and nanoporous Cu (NP Cu) substrate, which is obtained by soaking the NP Cu in dehydrated ethanol. The NP Cu substrate is achieved by dealloying of Ti40.6Zr9.4Cu40.6Ni6.3Sn3.1 amorphous ribbons in HF solutions. The dealloying process is considered to be a thermally activated process, obeying the Arrhenius law. The surface diffusivity increases with increasing dealloying temperature and concentration of HF solutions. The activation energy of the diffusion of Cu adatoms is estimated to be 76.4 kJ/mol. The Cu2O nanobelts with the width of 10–15 nm and the length of about 1 μm are formed on the surface of NP Cu after immersion in dehydrated ethanol. The photocatalysts of Cu2O on nanoporous Cu exhibit superior photocatalytic activity toward the degradation of methyl orange and methylene blue under the irradiation of the sunlight due to the coexistence of Cu2O semiconductor nanobelts and large amount of heterojunctions as flowing path for photoelectrons.

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Acknowledgements

This work was financially supported by the National Natural Science Foundation of China under Grant No. 51671106 and the Natural Science Foundation of Jiangsu Province under Grant Nos. BK20171424 and BK2015153.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China

    Yun Li, Chuan Ji, Yu-Chen Chi & Feng-Xiang Qin

  2. College of Materials Science and Engineering, Nanjing Tech University, Nanjing, 210009, China

    Zhen-Hua Dan

  3. Shengyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Science, Shengyang, 110016, China

    Hai-Feng Zhang

Authors
  1. Yun Li
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  2. Chuan Ji
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  3. Yu-Chen Chi
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  4. Zhen-Hua Dan
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  5. Hai-Feng Zhang
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  6. Feng-Xiang Qin
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Correspondence to Zhen-Hua Dan or Feng-Xiang Qin.

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Available online at http://link.springer.com/journal/40195

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Li, Y., Ji, C., Chi, YC. et al. Fabrication and Photocatalytic Activity of Cu2O Nanobelts on Nanoporous Cu Substrate. Acta Metall. Sin. (Engl. Lett.) 32, 63–73 (2019). https://doi.org/10.1007/s40195-018-0813-6

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  • DOI: https://doi.org/10.1007/s40195-018-0813-6

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