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金/铂双金属纳米颗粒-钛酸钡混合纳米材料的热释电合成

Pyroelectric synthesis of Au/Pt bimetallic nanoparticles-BaTiO hybrid nanomaterials.

作者信息

Wang Liren, Wang Han, Liu Yanming, Wang Xinyu, Tao Peng, Shang Wen, Fu Benwei, Song Chengyi, Deng Tao

机构信息

State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University 800 Dong Chuan Road Shanghai 200240 P.R.China

出版信息

RSC Adv. 2020 Jun 12;10(38):22616-22621. doi: 10.1039/d0ra00648c. eCollection 2020 Jun 10.

DOI:10.1039/d0ra00648c
PMID:35514593
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9054579/
Abstract

This paper introduces an approach to synthesize bimetallic nanoparticles under an alternating temperature field in aqueous solution. During the synthesis, pyro-catalytic barium titanate is used as the substrate to reduce the metallic ions dispersed in the solution due to the generated charges at the surface of pyro-materials under temperature oscillation. Chloroauric acid and potassium tetrachloroplatinate are used as precursors to produce gold/platinum bimetallic nanoparticles through a pyro-catalytic process. Transmission electron microscopy characterization, in combination with energy dispersive X-ray spectroscopy mapping, demonstrates that the bimetallic nanoparticle is composed of an Au core and Au/Pt alloy shell structure. Compared to the conventional approaches, the pyroelectric synthesis approach demonstrated in this work requires no toxic reducing agents and waste heat can be used as a thermal energy source in the synthesis. Hence, it offers a potential "green" synthetic method for bimetallic nanoparticles.

摘要

本文介绍了一种在水溶液中的交变温度场下合成双金属纳米颗粒的方法。在合成过程中，热催化钛酸钡用作底物，由于热材料表面在温度振荡下产生电荷，从而还原分散在溶液中的金属离子。氯金酸和氯铂酸钾用作前驱体，通过热催化过程制备金/铂双金属纳米颗粒。透射电子显微镜表征结合能量色散X射线光谱映射表明，双金属纳米颗粒由金核和金/铂合金壳结构组成。与传统方法相比，本文所展示的热电合成方法不需要有毒的还原剂，并且废热可作为合成中的热能来源。因此，它为双金属纳米颗粒提供了一种潜在的“绿色”合成方法。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/123f/9054579/5bac26fc7470/d0ra00648c-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/123f/9054579/c6f637ed085f/d0ra00648c-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/123f/9054579/b893233642a9/d0ra00648c-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/123f/9054579/8ce3b2a52692/d0ra00648c-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/123f/9054579/5bac26fc7470/d0ra00648c-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/123f/9054579/c6f637ed085f/d0ra00648c-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/123f/9054579/b893233642a9/d0ra00648c-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/123f/9054579/8ce3b2a52692/d0ra00648c-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/123f/9054579/5bac26fc7470/d0ra00648c-f4.jpg

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