In:
Journal of Materials Chemistry C, Royal Society of Chemistry (RSC), Vol. 11, No. 11 ( 2023), p. 3715-3725
Abstract:
Recently, the photocatalytic degradation of organic pollutants using halide perovskite materials has increasingly attracted people's attention. However, the stability issues and the lead toxicity of such materials cast a shadow over their practical applications. In this study, we successfully synthesized non-toxic Cs 4 MnBi 2 Cl 12 single crystals (SCs) using a hydrothermal method. Joint experiment–theory characterizations reveal the good stability of Cs 4 MnBi 2 Cl 12 . Furthermore, the application of Cs 4 MnBi 2 Cl 12 as a photocatalyst in the degradation of organic pollutants was demonstrated for the first time. In detail, rhodamine B (RhB), methylene blue and Sudan Red III dissolved in ethanol can be degraded and decolorized by Cs 4 MnBi 2 Cl 12 SCs under light irradiation. About 97% RhB can be degraded in 7 min, and the degradation efficiency is hardly decreased over ten cycles. Besides, the photocatalytic degradation mechanisms were studied, and the results show that the superoxide (˙O 2 − ) plays a leading role in the photocatalytic process. The degradation pathways of organic pollutants were subsequently analyzed by high-performance liquid chromatography–mass spectrometry, involving three stages of N -deethylation, ring opening, and mineralization. Encouraged by the remarkable structural and optical stability of Cs 4 MnBi 2 Cl 12 SCs, such lead-free perovskite materials may have broad application prospects in the field of photocatalysis.
Type of Medium:
Online Resource
ISSN:
2050-7526
,
2050-7534
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2023
detail.hit.zdb_id:
2702245-6
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