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Citation: Fang CHANG, Ying-Jie ZHAO, You-Ping SHOU, Lu ZHANG, Jiang-Nan WANG, Ting-Ting SHI. One-Pot Preparation of Fe2O3/Fe2TiO5 S-Scheme Heterojunction Photocatalyst for Highly Efficient Degradation of Organic Pollution[J]. Chinese Journal of Inorganic Chemistry, ;2022, 38(9): 1862-1870. doi: 10.11862/CJIC.2022.173 shu

One-Pot Preparation of Fe2O3/Fe2TiO5 S-Scheme Heterojunction Photocatalyst for Highly Efficient Degradation of Organic Pollution

  • Tianjin Research Institute for Water Transport Engineering, Ministry of Transport, Tianjin 300000, China

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  • For the first time, Fe2O3/Fe2TiO5 heterojunction materials have been fabricated by a facile one-pot solvothermal method. After the construction of the S-scheme heterojunction, compared to pure Fe2O3 and Fe2TiO5, the photocatalytic degradation rate and efficiency of Fe2O3/Fe2TiO5 were significantly improved. After being illuminated for 2.5 h, nearly 100% of methylene blue (MB) has been degraded by Fe2O3/Fe2TiO5. In Fe2O3/Fe2TiO5 composite material, a built-in field is formed between Fe2O3 and Fe2TiO5, thus promoting the separation of photogenerated electron-hole pairs. Therefore, electrons in the conduction band (CB) of Fe2TiO5 and holes in the valence band (VB) of Fe2O3 with higher energy, which show high reduction and oxidation capacity, respectively, can retain and transfer to the surface to participate in the degradation reaction. Moreover, Fe2O3/Fe2TiO5 composite showed good photocatalytic stability.
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