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Title: Gold Nanoparticle Formation Kinetics and Mechanism: A Critical Analysis of the “Redox Crystallization” Mechanism

Journal Article · · ACS Omega
 [1]; ORCiD logo [2]
  1. Department of Chemistry and Biochemistry, University of Northern Colorado, Greeley, Colorado 80639, United States
  2. Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States

A 2013 paper proposed a “redox crystallization” (R-C) mechanism for the formation of Au0n nanoparticles from the reduction of a AuCl4 precursor. That study used an unconventional analysis of the valuable, expertly obtained kinetics data reported, and came up with multiple claims and insights collected under the putatively new R-C mechanism. If confirmed, those claims and the R-C mechanism provide a valuable addition to the knowledge of gold nanoparticle formation kinetics and mechanisms. On the other hand, if the methodology used to support the R-C mechanism is flawed so that its resultant conclusions are incorrect, then the R-C mechanism needs to be discarded until compelling evidence for it can be gathered, evidence that would have to include the disproof of the other dominant mechanism(s) of nanoparticle formation. The present work provides a critical analysis of the evidence previously offered for the R-C mechanism, efforts that are of interest to the areas of Au0n nanoparticles, the kinetics and mechanisms of nanoparticle formation and, as it turns out, more generally to those interested in kinetic and mechanistic studies.

Research Organization:
Colorado State Univ., Fort Collins, CO (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences, and Biosciences Division
Grant/Contract Number:
SE-FG402-03ER15453; FG02-03ER15453
OSTI ID:
1419703
Alternate ID(s):
OSTI ID: 1512947
Journal Information:
ACS Omega, Journal Name: ACS Omega Vol. 3 Journal Issue: 2; ISSN 2470-1343
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 21 works
Citation information provided by
Web of Science

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Seedless synthesis of silver nanoparticles using sunlight and study of the effect of different ratios of precursors journal January 2019
Synthesis of Gold Nanoparticles Using Mimosa tenuiflora Extract, Assessments of Cytotoxicity, Cellular Uptake, and Catalysis journal October 2019
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Figures / Tables (6)