Coulometric sizing of nanoparticles： Cathodic and anodic impact experiments open two independent routes to electrochemical sizing of Fez04 nanoparticles  

作　　者：Kristina Tschulik Baptiste Haddou Dario Omanovi Neil V. Rees Richard G. Compton 

机构地区：[1]Department of Chemistry, Physical & Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OXI 3QZ,United Kingdom [2]Center for Marine and Environmental Research, Ruder Boskovic Institute, P. O. Box 180, I0001 Zagreb, Croatia

出　　处：《Nano Research》2013年第11期836-841,共6页纳米研究（英文版）

摘　　要：Anodic particle coulometry （APC） is a recently established method of sizing individual metal nanoparticles by oxidising them during their impact on a micro electrode. Here it is demonstrated that the application of APC can be extended to sizing of metal oxide nanoparticles, such as Fe304 magnetite nanoparticles. Additionally, a new route to electrochemical nanoparticle sizing is introduced-- cathodic particle coulometry （CPC）. This method uses the reduction of impacting nanoparticles, e.g., metal oxide nanoparticles, and is demonstrated to yield correct size information for Fe304 nanoparticles. The combination of these two independent electrochemical methods of nanoparticle sizing, allows for purely electrochemical sizing of single nanoparticles and simultaneous verification of the obtained results.

关 键 词：nanoparticle sizing Fe3O4 anodic particle coulometry cathodic particle coulometry impact experiments metal oxide nanoparticles 

分 类 号：TM911.4[电气工程—电力电子与电力传动] TB383[一般工业技术—材料科学与工程]