Ultrathin structural BiOI with surface oxygen vacancies for improved photocatalytic degradation of organic pollutants
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Ultrathin BiOI nanosheets with surface oxygen vacancies have been synthesized in situ and evaluated as improved bismuth oxyhalide photocatalysts for the degradation of organic pollutants. Environmental remediation, in particular the degradation of phenol and bisphenol A is of interest due to the toxicity and persistent nature of these compounds. The efficient photocatalytic activity of ultrathin structural BiOI is the result of enhanced carrier photocatalysis. This has been determined by several experiments, such as trapping experiments, electron spin resonance and reactive oxygen species quantification experiments. The durability and stability of the catalysts has also been verified by cyclic experiments. These bismuth oxyhalide photocatalysts shows promise for the efficient and sustainable decomposition of persistent organic pollutants.
This work was supported by the National Natural Science Foundation of China (Nos. 51502146, 51702270, 21671113), the PetroChina Innovation Foundation (No. 2018D-5007-0604), the Open Fund (201601) of the State Key Laboratory of Physical Chemistry of Solid Surfaces (Xiamen University), and the Open Fund (PEBM201702) of the Key Laboratory for Photonic and Electric Bandgap Materials, Ministry of Education (Harbin Normal University).
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