Jaturapoot Phanwichean, Rattaporn Saenmuangchin, and Atitaya Siripinyanond*

Field-flow fractionation-ICP-MS and SP-ICP-MS techniques were applied for the study of shape transformation between silver nanosphere and silver nanoplate. The information obtained from FFF-ICP-MS, SP-ICP-MS, and TEM were combinedly used to estimate the edge length of triangular silver nanoplates and also the thickness of the plate by exploiting the differences in particle size information obtained from each technique. Although the plate thickness and the edge length of nanoplates can be directly observed from TEM, a careful sample preparation for TEM analysis is required so that the plate thickness can be observed. Therefore, SP-ICP-MS is a promising tool for nanoparticle characterization due to its ability to measure nanoparticles in very low concentration, particularly when the amount of sample is limited.

Thanks are due to NSRF via the Program Management Unit for Human Resources & Institutional Development, Research and Innovation [grant number B05F640129]. The support from Center of Excellence for Innovation in Chemistry (PERCH-CIC) and National Research Council of Thailand (N41A640159 and N11A650144) are gratefully acknowledged. We appreciate Dr. Thanisorn Mahatnirunkul for help with TEM measurement. We would like to acknowledge Mahidol University-Frontier Research Facility (MU-FRF) for instrument supports.