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Effects of Additives on the Preparation of Ag Nanoparticles Using the Microwave‐Induced Plasma in Liquid Process
Author(s) -
Nishimoto Masamu,
Tsukamoto Hiroki,
Nguyen Mai Thanh,
Yonezawa Tetsu
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201701462
Subject(s) - aqueous solution , microwave , nanoparticle , ammonia , chemistry , silver nanoparticle , plasma , ion , nuclear chemistry , liquid ammonia , chemical engineering , inorganic chemistry , materials science , nanotechnology , organic chemistry , physics , quantum mechanics , engineering
Abstract The effect of additives, i. e., H 2 O 2 and pH adjustors, on the preparation of Ag nanoparticles (NPs) fabricated using the microwave‐induced plasma in liquid process (MWPLP) has been investigated. When both aqueous ammonia and NaOH were used as pH adjustors, the rate of the reduction of silver ions decreased with lower concentrations of H 2 O 2 or at higher pH values. Under these conditions, the aggregation of generated nuclei during the early stages of the reduction was suppressed, and the sizes of the obtained Ag NPs decreased. The amount of H 2 O 2 and the pH of the reduction solutions are therefore highly important parameters for the preparation of well‐dispersed Ag NPs using the MWPLP.