通过制备Zn0.1Cd0.9S/In2O3异质结提高胺与亚胺氧化偶联的光催化性能

IF 4.1 3区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-07-12 DOI:10.1016/j.jphotochem.2025.116615

Chengxin Du, Ailin Luo, Shipeng Ye, Qing Wang, Yu Song, Yafen Zhou, Limei Zhou

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引用次数: 0

摘要

采用水热法制备了一系列富含氧空位的Zn0.1Cd0.9S/In2O3 （ZCS/IO）直接z型异质结复合材料。与纯Zn0.1Cd0.9S和In2O3相比，所制得的ZCS/IO复合材料在可见光和环境空气下将苄基胺（BA）光催化氧化为n -苄基苄基胺（N-BDBA）的活性显著提高。其中，In2O3质量比为10%的ZCS/IO复合材料（标记为ZCS/IO-10）表现出最佳的光催化性能，在辐照1 h内，苯胺的转化率达到99.6%，并具有高选择性（> 99.0%）。Zn0.1Cd0.9S与In2O3之间的直接Z-scheme异质结的建立和氧空位（OVs）浓度的显著增加是光催化活性显著提高的原因。因此，增强了ZCS/IO复合材料的光吸收能力，加速了光生电子和空穴的分离和迁移，同时保持了复合材料的高氧化还原能力，从而提高了其对胺氧化的光催化活性。此外，ZCS/IO-10复合材料在连续4个循环中保持了较高的活性，表明其具有良好的稳定性和可重复使用性。此外，取代的苯胺和杂环胺也可以在ZCS/IO-10复合材料的光催化下转化为相应的亚胺，体现了复合催化剂良好的通用性

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Boosting the photocatalytic performance for oxidative coupling of amines to imines by fabricating the Zn0.1Cd0.9S/In2O3 heterojunction

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Boosting the photocatalytic performance for oxidative coupling of amines to imines by fabricating the Zn0.1Cd0.9S/In2O3 heterojunction

A series of Zn_0.1Cd_0.9S/In₂O₃ (ZCS/IO) direct Z-scheme heterojunction composites enriched with oxygen vacancies were prepared by a facile hydrothermal method. The obtained ZCS/IO composites exhibited a remarkable improved activity for the photocatalytic oxidation of benzylamine (BA) to N-benzylidene benzylamine (N-BDBA) under visible light illumination and ambient air as compared to pure Zn_0.1Cd_0.9S and In₂O₃. Especially, the ZCS/IO composite with a In₂O₃ mass ratio of 10 %, denoted as ZCS/IO-10, showed the best photocatalytic performance, offering 99.6 % conversion of benzylamine with high selectivity (>99.0 %) to N-BDBA within 1 h of irradiation. The significant improvement in photocatalytic activity was attributed to the construction of a direct Z-scheme heterojunction between Zn_0.1Cd_0.9S and In₂O₃, and the great increase in oxygen vacancies (OVs) concentration. As a result, the light absorption ability of the ZCS/IO composite was enhanced and the separation and migration of the photogenerated electrons and holes were accelerated, meanwhile the high redox ability of the composite was maintained, and thus resulting in the boosting of it's photocatalytic activity for amine oxidation. In addition, the high activity of ZCS/IO-10 composite was maintained during the four consecutive cycles, suggesting its good stability and reusability. Besides, the substituted benzylamines and heterocyclic amines can also be transformed to their corresponding imines phtocatalyzed by the ZCS/IO-10 composite, manifesting the good versatility of the composite catalyst

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来源期刊

Journal of Photochemistry and Photobiology A-chemistry 化学-物理化学

CiteScore

7.90

自引率

7.00%

发文量

580

审稿时长

48 days

期刊介绍： JPPA publishes the results of fundamental studies on all aspects of chemical phenomena induced by interactions between light and molecules/matter of all kinds. All systems capable of being described at the molecular or integrated multimolecular level are appropriate for the journal. This includes all molecular chemical species as well as biomolecular, supramolecular, polymer and other macromolecular systems, as well as solid state photochemistry. In addition, the journal publishes studies of semiconductor and other photoactive organic and inorganic materials, photocatalysis (organic, inorganic, supramolecular and superconductor). The scope includes condensed and gas phase photochemistry, as well as synchrotron radiation chemistry. A broad range of processes and techniques in photochemistry are covered such as light induced energy, electron and proton transfer; nonlinear photochemical behavior; mechanistic investigation of photochemical reactions and identification of the products of photochemical reactions; quantum yield determinations and measurements of rate constants for primary and secondary photochemical processes; steady-state and time-resolved emission, ultrafast spectroscopic methods, single molecule spectroscopy, time resolved X-ray diffraction, luminescence microscopy, and scattering spectroscopy applied to photochemistry. Papers in emerging and applied areas such as luminescent sensors, electroluminescence, solar energy conversion, atmospheric photochemistry, environmental remediation, and related photocatalytic chemistry are also welcome.