In this paper, NiAl-LDH with the characteristic structure of hydrotalc-like compound was applied as a carrier in the process of a two-step hydrothermal method, and MnCdS/In₂S₃/NiAl-LDH composite material was successfully prepared by loading MnCdS and In₂S₃ on the flower spherical-like surface of NiAl-LDH. The combination of NiAl-LDH with In₂S₃ and MnCdS made the band gap smaller and the light absorption range larger, thus increasing the utilization rate of light. 50% MnCdS/In₂S₃/NiAl-LDH composites had the best photoinduced charge separation and highest surface enrichment of photogenerated electrons. In the degradation experiment for crystal violet (CV), 50% MnCdS/In₂S₃/NiAl-LDH composites showed superior photocatalytic degradation efficiency (> 98.5%) under full spectrum light. Furthermore, the applicability and universality of photocatalyst were studied by observing the degradation of CV by MnCdS/In₂S₃/NiAl-LDH composites under different conditions. In addition, the composites showed excellent hydrogen production capacity via photolysis of water, of which hydrogen production within 8 hours was about 7661.51 μmol/g. By combining the results of active species capture experiments, density functional theory (DFT) calculation and photoelectrochemical experiments, the possible mechanism of double S-scheme heterojunction photocatalysis between NiAl-LDH, In₂S₃ and MnCdS was inferred, which is one of the main reasons for the enhancement of photocatalytic activity.

中文翻译：

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花球状MnCdS/In2S3/NiAl-LDH复合材料的异质结构具有出色的光催化降解和析氢性能


本文以类水滑石化合物特征结构的NiAl-LDH为载体，采用两步水热法制备了MnCdS/In ₂ S ₃ 通过在NiAl-LDH的花球形表面负载MnCdS和In ₂ S ₃ ，成功制备出/NiAl-LDH复合材料。 NiAl-LDH与In ₂ S ₃ 和MnCdS的结合使带隙更小，光吸收范围更大，从而提高了光的利用率。 50% MnCdS/In ₂ S ₃ /NiAl-LDH 复合材料具有最好的光生电荷分离和最高的光生电子表面富集度。在结晶紫（CV）降解实验中，50%MnCdS/In ₂ S ₃ /NiAl-LDH复合材料在全光谱光下表现出优异的光催化降解效率（> 98.5%） 。此外，通过观察MnCdS/In ₂ S ₃ /NiAl-LDH复合材料在不同条件下对CV的降解情况，研究了光催化剂的适用性和普适性。此外，该复合材料还表现出优异的光解水产氢能力，8小时内产氢量约为7661.51 μmol/g。结合活性物种捕获实验、密度泛函理论（DFT）计算和光电化学实验的结果，揭示了NiAl-LDH、In ₂ S ₃