Uncovering gold nanoparticle synthesis using a microchip laser system through pulsed laser ablation in aqueous solution  

作　　者：Barana Sandakelum Hettiarachchi Yusuke Takaoka Yuta Uetake Yumi Yakiyama Hwan Hong Lim Takunori Taira Mihoko Maruyama Yusuke Mori Hiroshi Y.Yoshikawa Hidehiro Sakurai 

机构地区：[1]Division of Applied Chemistry,Graduate School of Engineering,Osaka University,2-1 Yamadaoka,Suita,Osaka 565-0871,Japan [2]Division of Applied Physics,Graduate School of Engineering,Osaka University,2-1 Yamadaoka,Suita,Osaka 565-0871,Japan [3]Innovative Catalysis Science Division,Institute for Open and Transdisciplinary Research Initiatives(ICS-OTRI),Osaka University,2-1 Yamadaoka,Suita,Osaka 565-0871,Japan [4]Division of Research Innovation and Collaboration,Institute for Molecular Science,38 Nishigonaka,Myodaiji,Okazaki 444-8585,Japan [5]Laser-Driven Electron-Acceleration Technology Group,RIKEN SPring-8 Center,1-1-1 Kouto,Sayo-cho,Sayo-gun,Hyogo 679-5148,Japan [6]Division of Electrical,Electronic and Infocommunications Engineering,Graduate School of Engineering,Osaka University,2-1 Yamadaoka,Suita,Osaka 565-0871,Japan

出　　处：《Industrial Chemistry & Materials》2024年第2期340-347,共8页工业化学与材料（英文）

基　　金：supported by JSPS KAKENHI(JP19K22187);Foundation for the Promotion of Science&Engineering for financial support;the Japan International Cooperation Agency(JICA)and Otsuka Toshimi Scholarship Foundation(21-S58 and 22-S30)for kindly providing scholarships.

摘　　要：The synthesis of gold nanoparticles(Au NPs)was carried out by utilising the pulsed laser ablation in liquids(PLAL)method with a microchip laser(MCL)system.This portable system features low power consumption and a giant-pulse laser.Aqueous solutions with and without the surfactant poly(N-vinyl-2-pyrrolidone)(PVP)were used for laser ablation of a bulk gold rod to achieve the successful formation of a colloidal solution of Au NPs.The gas bubbles formed by heating the aqueous medium around the surface of the gold target significantly reduced the efficiency of Au NP ablation.This effect was more pronounced and prolonged in high-viscosity solutions,hindering energy transfer from subsequent laser pulses to the target.Additionally,it was suggested that the chain length of PVP does not affect either the size of the Au NPs or the ablation efficiency.Videography experiments were conducted to explore the ablation mechanism employed by the MCL system.The relatively short pulse duration of the MCL system may contribute to the formation of NPs with consistent size,which were suppressed to grow in significantly smaller cavitation bubbles with short lifetimes.

关 键 词：Pulsed laser ablation in liquids(PLAL) Microchip laser(MCL) Gold nanoparticles Viscosity Poly(N-vinyl-2-pyrrolidone)(PVP) 

分 类 号：TN2[电子电信—物理电子学]