Bi4O5I2-Bi5O7I/Ni foam constructed in-situ accelerating interfacial carrier transfer for efficient photocatalysis
Bi4O5I2-Bi5O7I/Ni foam constructed in-situ accelerating interfacial carrier transfer for efficient photocatalysis
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DOI：
10.1016/j.apsusc.2021.150485
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发表时间：
2021-10
影响因子：
6.7
通讯作者：
Shaomang Wang;Wen An;Y. Guan;Zhongyu Li;Danjun Mao;Tao Xu;Haoran Wang;Zhi-Fang Hu;S. Yan-S.-Ya
中科院分区：
文献类型：
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作者：
Shaomang Wang;Wen An;Y. Guan;Zhongyu Li;Danjun Mao;Tao Xu;Haoran Wang;Zhi-Fang Hu;S. Yan-S.-Ya
BiOI powder was first supported on Ni foam to form BiOI/Ni foam. The Bi4O5I2-Bi5O7I/Ni foam was obtained by calcining the BiOI/Ni foam at 400 °C for 1 h with a ramp rate of 10 °C min−1, which demonstrated excellent photocatalytic performance in the removal of RhB from water. Approximately 99% of RhB was decomposed over Bi4O5I2-Bi5O7I/Ni foam under irradiation of a 500 W xenon lamp for 5 h, 41% higher than that over BiOI powder calcined under the same conditions. The removal rates of total organic carbon and total organic nitrogen were about 47% and 38%, respectively. Degradation rate of RhB only decreased by 2% after the Bi4O5I2-Bi5O7I/Ni foam was used for 5 rounds. Photo-induced electrons flowed from Bi4O5I2to Bi5O7I, to Ni foam, while photo-generated holes migrated in the reverse direction. The rapid migration of photo-induced electrons and holes on the interface of Bi4O5I2-Bi5O7I/Ni foam oppositely enhanced its photocatalytic activity for better degradation of RhB.
