Preparation of carbon fiber supported layered TiC/TiO<sub>2</sub> catalyst with potassium ion tuning

Feng Xuefan; Wang Huazhong; Wang Xiaoming; Yu Wenrui; Yang Yu; Zhang Fuqin

doi:10.7513/j.issn.1004-7638.2021.03.009

Volume 42 Issue 3

Jun. 2021

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Feng Xuefan, Wang Huazhong, Wang Xiaoming, Yu Wenrui, Yang Yu, Zhang Fuqin. Preparation of carbon fiber supported layered TiC/TiO2 catalyst with potassium ion tuning[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(3): 58-63. doi: 10.7513/j.issn.1004-7638.2021.03.009

Citation:

Feng Xuefan, Wang Huazhong, Wang Xiaoming, Yu Wenrui, Yang Yu, Zhang Fuqin. Preparation of carbon fiber supported layered TiC/TiO₂ catalyst with potassium ion tuning[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(3): 58-63. doi: 10.7513/j.issn.1004-7638.2021.03.009

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Preparation of carbon fiber supported layered TiC/TiO₂ catalyst with potassium ion tuning

doi: 10.7513/j.issn.1004-7638.2021.03.009

Powder Metallurgy Research Institute, Central South University, Changsha 410083, Hunan, China

Received Date: 2021-03-17
Publish Date: 2021-06-10

Abstract

Abstract

A carbon fiber supported layered TiC/TiO₂ composite catalyst with heterojunction was prepared by in-situ synthesis with potassium ion (K⁺) tuning. The prepared catalysts were characterized by FE-SEM, XRD, Raman, XPS and AFM. The photocatalytic degradation of pollutants rhodamine B (RhB) by the catalysts was carried out. The results show that the tuning of potassium ion to heterojunction plays an important role in photocatalytic efficiency. In the process of UV-visible-light catalytic degradation, the removal rate of RhB by CFs@TiC/TiO₂ reaches 98%. The repeated experiments show that the photocatalytic removal efficiency is more than 90% after three cycles, indicating a well stability. TiC can be grown on the surface of carbon fibers (CFs) via the in-situ growth collaborated by K⁺, and partial TiC can be transformed into potassium titanate nano particles through hydrothermal process in NaOH solution. The potassium titanate nano particles were then soaked in dilute HCl solution, and flake anatase TiO₂ can be formed via heat treatment and dehydration. Finally, carbon fiber supported CFs@TiC/TiO₂ composite catalyst with layered heterojunction can be obtained. The flower-like structure formed by potassium titanate nanocrystals has a large specific surface area, which provides the structural characteristics and catalytic activity sites for preparation of CFs@TiC/TiO₂ composites.
- photocatalysis,
- TiC/TiO₂ layered heterojunction,
- carbon fiber,
- in-situ growth,
- K⁺

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References(26)

References

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