Abstract
Ultrasound provided a good dispersion of CuS on TiO2NTs. In order to prepare CuS/TiO2NTs with a good heterostructure, the CuS particles must establish contact with TiO2NTs uniformly. The hydrothermal process was divided into two phases, and different times of ultrasound were introduced before each stage. The effects of ultrasonic-assisted hydrothermal method on the structure and photoelectric properties of CuS/TiO2NTs were investigated by SEM, XRD, photocurrent, and degradation of MB. The results show that the introduction of ultrasound before the hydrothermal treatment can cause damage to the TiO2NTs. However, the ultrasound between the two hydrothermal stages makes CuS distributed in the TiO2NTs uniformly, and the amount of CuS can be increased. The photocurrent reaches 32 mA/cm2 at 1.5 V, and meanwhile the photocatalytic activity under visible light is also improved.
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The authors gratefully acknowledge financial support from Tianjin Science and Technology Support Plan Key Projects (No. 12ZCZDJC35600).
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Li, L., Ya, J., Xiang, L. et al. The preparation of CuS/TiO2 nanotube arrays with high-active under visible light by ultrasonic-assisted hydrothermal method. Appl. Phys. A 123, 667 (2017). https://doi.org/10.1007/s00339-017-1281-y
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DOI: https://doi.org/10.1007/s00339-017-1281-y