Programmed engineering of cadmium sulfide via fibrous coordination polymers for tuning selective photocatalysis.

利用纤维状配位聚合物对硫化镉进行程序化工程改造，以调控其选择性光催化性能

Linlin Cui, Haiyan Yang, Congying Zhao, Minjie Wang, Qian Zhang, Ying-Ying Zhang, Chao Huang, Xiaodan Huang (2026) Programmed engineering of cadmium sulfide via fibrous coordination polymers for tuning selective photocatalysis. J Colloid Interface Sci (IF: 9.7) 1 区 718 140485

Abstract

The design and development of photocatalysts capable of precisely regulating the reaction sites in selective systems with multiple active centers remains a central challenge. In this study, selective control over multiple reaction sites was achieved by integrating a zinc coordination polymer (Zn-CP, 1), photoactive semiconductor CdS nanoparticles, and polyacrylonitrile (PAN) to construct CdS@1/PAN composites via electrospinning, followed by an in situ growth strategy, leveraging the synergistic catalytic effect of CPs and CdS nanoparticles. Fiber-based 1/PAN membranes with homogeneous and well-established pre-structural units were fabricated via electrospinning by tuning the relative proportions of PAN and 1. Subsequently, CdS nanoparticles were immobilized on the optimized 1/PAN fibrous framework via an in situ approach to form CdS@1/PAN composites with tunable CdS loadings, while preserving the pristine fibrous structure with periodically and accessibly dispersed catalytically active sites. Consequently, the CdS@1/PAN composites as photocatalysts exhibited effective photocatalytic performance in the selective depolymerization of the lignin model under blue light irradiation. In particular, the CdS0.09@1/PAN composite, which demonstrated excellent controllability and favorable photoelectrochemical properties, achieved remarkable photocatalytic efficiency in a selective one-step depolymerization process, generating the desired aromatic monomer, acetophenone, and phenol derivatives with high activity.Copyright © 2024. Published by Elsevier Inc.

设计和开发能够精确调控具有多个活性中心的选择性体系中反应位点的光催化剂仍然是一项核心挑战。本研究通过将锌配位聚合物（Zn-CP，1）、光敏半导体CdS纳米粒子和聚丙烯腈（PAN）整合，利用静电纺丝法构建CdS@1/PAN复合材料，并结合原位生长策略，实现了对多个反应位点的选择性控制。该策略充分利用了配位聚合物和CdS纳米粒子的协同催化效应。通过调节PAN和1的相对比例，利用静电纺丝法制备了具有均一且结构稳定的预结构单元的纤维状1/PAN膜。随后，采用原位方法将CdS纳米粒子固定在优化的1/PAN纤维骨架上，形成CdS负载量可调的CdS@1/PAN复合材料，同时保持了原始纤维结构，其中催化活性位点呈周期性且易于接近地分散。因此，CdS@1/PAN复合材料作为光催化剂，在蓝光照射下对木质素模型的选择性解聚表现出高效的光催化性能。特别是，CdS0.09@1/PAN复合材料展现出优异的可控性和良好的光电化学性能，在选择性一步解聚过程中实现了显著的光催化效率，高活性地生成了目标芳香族单体、苯乙酮和苯酚衍生物。版权所有 © 2024。由Elsevier Inc.出版。

Links

http://www.ncbi.nlm.nih.gov/pubmed/41980531
http://dx.doi.org/10.1016/j.jcis.2026.140485

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