Ultra-small platinum and gold nanoparticles by arc plasma deposition

详细信息    查看全文

• 作者：Sang Hoon Kim^a ; ^{kim_sh@kist.re.kr" class="auth_mail} ; Young Eun Jeong^a ; Heonphil Ha^a ; Ji Young Byun^a ; Young Dok Kim^b
• 关键词：Nanoparticles ; Interfaces ; Pt ; Au ; Arc plasma deposition
• 刊名：Applied Surface Science
• 出版年：1 April, 2014
• 年：2014
• 卷：297
• 期：Complete
• 页码：52-58
• 全文大小：2644 K

文摘

Ultra-small (<2 nm) nanoparticles of platinum and gold were produced by arc plasma deposition (APD) in a systematic way and the deposition behavior was studied. Nanoparticles were deposited on two dimensional amorphous carbon and amorphous titania thin films and characterized by transmission electron microscopy (TEM). Deposition behavior of nanoparticles by APD was studied with discharge voltage (V), discharge condenser capacitance (C), and the number of plasma pulse shots (n) as controllable parameters. The average size of intrinsic nanoparticles generated by APD process was as small as 0.9 nm and deposited nanoparticles began to have crystal structures from the particle size of about 2 nm. V was the most sensitive parameter to control the size and coverage of generated nanoparticles compared to C and n. Size of APD deposited nanoparticles was also influenced by the nature of evaporating materials and substrates.