Formation mechanism of platinum nanoparticles prepared by atmospheric pressure plasma jet  

作　　者：Ying ZHAO Ali TAO Zijing CHEN Yue RUAN Kunpeng WANG Ling ZHU Longwei CHEN 赵颖;陶阿丽;陈紫荆;阮月;王鲲鹏;朱玲;陈龙威(School of Pharmacy,Anhui Xinhua University,Hefei 230088,People’s Republic of China;Institute of Energy,Hefei Comprehensive National Science Center,Hefei 230026,People’s Republic of China)

机构地区：[1]School of Pharmacy,Anhui Xinhua University,Hefei 230088,People’s Republic of China [2]Institute of Energy,Hefei Comprehensive National Science Center,Hefei 230026,People’s Republic of China

出　　处：《Plasma Science and Technology》2025年第3期104-110,共7页等离子体科学和技术(英文版)

基　　金：partially supported by Natural Science Research Project of Anhui Educational Committee (Nos.KJ2021A1168,KJ2021A1169 and 2024AH050620);University Synergy Innovation Program of Anhui Province (No.GXXT-2022-026);University-Industry Cooperation Practical Education Base Project (No.2022xqjdx04)。

摘　　要：An atmospheric pressure plasma jet(APPJ)approach is developed to prepare platinum nanoparticles(PtNPs)under mild reaction conditions of lower temperatures and without adding chemical reagents.Optical Emission Spectroscopy(OES)and X-ray Photoelectron Spectroscopy(XPS)tests revealed that the APPJ contains a large number of high-energy active particles,which can generate solvated electrons in liquid thereby promoting the rapid reduction of Pt(Ⅳ)ions into Pt(0)atoms,and these atoms gradually grow into nanoparticles.After 3 min of treatment,PtNPs exhibit excellent dispersibility with a particle size distribution ranging from 1.8 to 2.8 nm.After 5 min,the particle size increases,and aggregation occurs.The zeta potentials for the two situations were-56.0 mV and-12.5 mV respectively.The results indicate that the treatment time has a significant impact on the dispersion,particle size distribution,and sol stability of the nanoparticles.Furthermore,it reveals the formation mechanism of PtNPs prepared by APPJ,which involves the generation and expansion of nanocrystalline nuclei,and the construction of negatively charged colloidal particles.The overall mechanism highlights the importance of the plasma-liquid interaction in the synthesis of PtNPs,offering a new perspective on the controllable production of nanomaterials using plasma technology.

关 键 词：atmospheric pressure plasma jet platinum nanoparticles liquid-phase reduction formation mechanism 

分 类 号：O53[理学—等离子体物理]