Aqueous phase synthesis of silver iodide nanoparticles from a polyacrylic acid–silver complex

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• 作者：O. A. Krotikova ; A. S. Ozerin ; Ph. S. Radchenko…
• 关键词：Polyacrylic acid ; Nanoparticles ; Silver iodide ; Complexes ; TEM
• 刊名：Colloid and Polymer Science
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：295
• 期：1
• 页码：99-105
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Polymer Sciences; Soft and Granular Matter, Complex Fluids and Microfluidics; Characterization and Evaluation of Materials; Physical Chemistry; Food Science; Nanotechnology and Microengineering;
• 出版者：Springer Berlin Heidelberg
• ISSN：1435-1536
• 卷排序：295

文摘

The conditions needed to form a complex of polyacrylic acid with silver ions (Ag+) in aqueous solution were investigated. Ag+ formed a complex with the dissociated carboxyl units of polyacrylic acid. It was found that the complex of polyacrylic acid with silver ions formed by disproportionation of Ag+ on polyacrylic acid macromolecules. When Ag+ and H+ coexisted in solution, the negatively charged carboxyl groups of polyacrylic acid preferentially interacted with H+. The size characteristics of the polyacrylic acid macromolecular coils and polyacrylic acid–silver complex and their volume ratio were investigated in solution. Silver iodide nanoparticles were synthesized under conditions where Ag+ formed a complex with polyacrylic acid, and when they were dispersed in bulk solution. The products were characterized by transmission electronic microscopy. The presence of the polyelectrolyte–silver complex as a precursor yielded silver iodide nanoparticles of smaller size and narrower size distribution, than those formed in the absence of the polyelectrolyte–silver complex.