pH-dependent size distribution of gold nanoparticles investigated by in situ pH-monitoring throughout the synthetic reaction

Autor:	Yong Ho Kim, Sang Hwa Hyun, Wan Soo Yun, Aeyeon Kang, Dae Keun Park
Rok vydání:	2015
Předmět:	In situ Colloidal gold Chemistry Critical factors Ph range Analytical chemistry General Physics and Astronomy Ph dependent Distribution (pharmacology) Physical and Theoretical Chemistry Two stages Ph monitoring Nuclear chemistry
Zdroj:	Chemical Physics Letters. 639:230-233
ISSN:	0009-2614
DOI:	10.1016/j.cplett.2015.09.027
Popis:	The pH, one of the critical factors in determining the size distribution of gold nanoparticles (AuNPs), is not maintained at a constant value during the synthetic reaction. In this work, AuNPs were synthesized in the pH range of 5.5–10.5 and the pH was monitored in situ throughout the whole synthetic process. It was found that the citrate-based AuNP synthesis could be divided into two stages according to phases of pH change: a pH-decreasing early stage and a pH-increasing final stage. The narrowest size distribution at pH 7.5 can be well understood with these two phases of pH change.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::dc0fd11e96d5c81ffc7e8bafae4e02fd https://doi.org/10.1016/j.cplett.2015.09.027 Zobrazit plný text záznamu Full Text from ScienceDirect