(ODA)2CuBr4: A stable lead-free perovskite as efficient photocatalyst for dehydrogenative coupling of quinoxalin-2(1H)-ones with amines

•A new stable lead-free copper halide perovskite (ODA)2CuBr4 was designed.•Characterization of photocatalyst accomplished by FT-IR, XRD, TEM, SEM, EDS, UV/Vis DRS and PL spectra.•The (ODA)2CuBr4 shows excellent photocatalytic performance for dehydrogenation coupling of quinoxalin-2(1H)-ones with ami...

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Published in:Molecular catalysis 2023-08, Vol.547, p.113319, Article 113319
Main Authors: Zhang, Shuai-Zheng, Gao, Yi-Fan, Li, Wen-Jing, Xiao, Wen-Xin, Huang, Jing, Mo, Li-Ping, Zhang, Zhan-Hui
Format: Article
Language:English
Subjects:
Coupling reaction
Heterogeneous photocatalyst
Perovskite
Photocatalysis
Quinoxalin-2(1H)-ones
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Summary:•A new stable lead-free copper halide perovskite (ODA)2CuBr4 was designed.•Characterization of photocatalyst accomplished by FT-IR, XRD, TEM, SEM, EDS, UV/Vis DRS and PL spectra.•The (ODA)2CuBr4 shows excellent photocatalytic performance for dehydrogenation coupling of quinoxalin-2(1H)-ones with amines.•The photocatalyst can be recycled with almost no loss in activity. A novel stable lead-free copper halide perovskite (ODA)2CuBr4 was prepared by intercalating the long hydrophobic alkyl group octadecyl ammonium (ODA) between the inorganic layers. The as-synthesized (ODA)2CuBr4 shows excellent photocatalytic performance in the visible-light-driven dehydrogenation coupling of quinoxalin-2(1H)-ones with amines at room temperature. In addition, the photocatalyst could be recovered and recycled for up to five consecutive runs without significant losing of its catalytic activity. A lead-free copper halide perovskite has been prepared and identified as an efficient photocatalyst for dehydrogenation coupling of quinoxalin-2(1H)-ones with amines in air under visible-light irradiation at room temperature. [Display omitted]
ISSN:2468-8231
2468-8231
DOI:10.1016/j.mcat.2023.113319