Fast In Situ Metal Deposition and Removal Under UV and Visible Light Using Polydopamine/TiO2 Composite Surface

IF 2.7 4区材料科学 Q3 CHEMISTRY, PHYSICAL Particle & Particle Systems Characterization Pub Date : 2024-09-09 DOI:10.1002/ppsc.202400102

Yanfang Niu, Zhenzhu He, Sen Li, Yi Zeng, Junning Zhang, Keliang Liu, Xin Du, Zhongze Gu

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Abstract

Metal nanoparticles (MNPs) stand out owing to conspicuous catalytic activity, optical and electromagnetic properties, with applications ranging from photocatalysis to biosensor and photoelectric devices. Although photocatalysis with TiO2 has emerged as a promising technique for preparing MNPs, the low photocatalytic efficiency of TiO2 limits its practical utilization. Herein, a rapid photoreduction approach is presented to prepare MNPs under UV and visible light based on polydopamine (PDA)/TiO2 composite surface. It found that the PDA‐modified TiO2 substrate can greatly enhance the photocatalytic efficiency and stability of MNPs, leading to rapid and highly‐controllable preparation of MNPs. By this method, various Ag, Au, and Pd patterns with controllable metallization degree can be easily fabricated. In addition, the substrate can be effectively recycled through rapid photobleaching. This method will have a promising future in the preparation of MNPs for various applications.

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利用聚多巴胺/二氧化钛复合表面在紫外和可见光下快速原位沉积和去除金属

金属纳米粒子（MNPs）因其显著的催化活性、光学和电磁特性而脱颖而出，其应用范围包括光催化、生物传感器和光电设备。尽管利用 TiO2 进行光催化已成为制备 MNPs 的一种前景广阔的技术，但由于 TiO2 的光催化效率较低，限制了其实际应用。本文介绍了一种基于聚多巴胺（PDA）/TiO2 复合表面在紫外光和可见光下制备 MNPs 的快速光还原方法。研究发现，PDA修饰的TiO2基底可大大提高MNPs的光催化效率和稳定性，从而实现MNPs的快速、高度可控制备。通过这种方法，可以轻松制备出金属化程度可控的各种Ag、Au和Pd图案。此外，基底可通过快速光漂白有效回收。这种方法在制备 MNPs 的各种应用中将大有可为。

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来源期刊

Particle & Particle Systems Characterization 工程技术-材料科学：表征与测试

CiteScore

5.50

自引率

0.00%

发文量

114

审稿时长

3.0 months

期刊介绍： Particle & Particle Systems Characterization is an international, peer-reviewed, interdisciplinary journal focusing on all aspects of particle research. The journal joined the Advanced Materials family of journals in 2013. Particle has an impact factor of 4.194 (2018 Journal Impact Factor, Journal Citation Reports (Clarivate Analytics, 2019)). Topics covered include the synthesis, characterization, and application of particles in a variety of systems and devices. Particle covers nanotubes, fullerenes, micelles and alloy clusters, organic and inorganic materials, polymers, quantum dots, 2D materials, proteins, and other molecular biological systems. Particle Systems include those in biomedicine, catalysis, energy-storage materials, environmental science, micro/nano-electromechanical systems, micro/nano-fluidics, molecular electronics, photonics, sensing, and others. Characterization methods include microscopy, spectroscopy, electrochemical, diffraction, magnetic, and scattering techniques.