The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.
Oxidative Dissolution of Silver Nanoparticles by Biologically Relevant Oxidants: A Kinetic and Mechanistic Study
Abstract
The oxidative dissolution of silver nanoparticles (AgNPs) plays an important role in the synthesis of well‐defined nanostructured materials, and may be responsible for their activities in biological systems. In this study, we use stopped‐flow spectrophotometry to investigate the kinetics and mechanism of the oxidative dissolution of AgNPs by H 2 O 2 in quasi‐physiological conditions. Our results show that the reaction is first order with respect to both [Ag 0] and [H 2 O 2], and parallel pathways that involve the oxidation of H 2 O 2 and HO 2− are proposed. The order of the reaction is independent of the size of the AgNPs (≈5–20 nm). The rate of dissolution increases with increasing pH from 6.0 to 8.5. At 298 K and I=0.1 M, the value of kb is five orders of magnitude higher than that of ka (where ka and kb are the rate constants for the oxidative dissolution of AgNPs by H 2 O 2 and HO 2−, respectively). In addition, the effects of surface coating and the presence of halide ions on the dissolution rates are investigated. A possible mechanism for the oxidative dissolution of AgNPs by H 2 O 2 is proposed. We further demonstrate that the toxicities of AgNPs in both bacteria and mammalian cells are enhanced in the presence of H 2 O 2, thereby highlighting the biological relevance of investigating the oxidative dissolution of AgNPs.
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(1999) · Choice Reviews Online · doi:10.5860/choice.37-0940 · Cited by 14,314
Chemistry and Properties of Nanocrystals of Different Shapes
Burda, C., Chen, X., Narayanan, R., & El-Sayed, M. A. (2005) · Chemical Reviews · doi:10.1021/cr030063a · Cited by 7,230
Applications of Nanoparticles in Biology
De, M., Ghosh, P. S., & Rotello, V. M. (2008) · Advanced Materials · doi:10.1002/adma.200703183 · Cited by 1,547
Cited by
Environmental Transformations of Silver Nanoparticles: Impact on Stability and Toxicity
Levard, C., Hotze, E. M., Lowry, G. V., & Brown, G. E. (2012) · Environmental Science & Technology · doi:10.1021/es2037405 · Cited by 1,522
Kittler, S., Greulich, C., Diendorf, J., Köller, M., & Epple, M. (2010) · Chemistry of Materials · doi:10.1021/cm100023p · Cited by 1,126
He, W., Zhou, Y.-T., Wamer, W. G., Boudreau, M. D., & Yin, J.-J. (2012) · Biomaterials · doi:10.1016/j.biomaterials.2012.06.076 · Cited by 398
Greulich, C., Braun, D., Peetsch, A., Diendorf, J., Siebers, B., Epple, M., & Köller, M. (2012) · RSC Advances · doi:10.1039/c2ra20684f · Cited by 389
Silver Release from Silver Nanoparticles in Natural Waters
Dobias, J., & Bernier-Latmani, R. (2013) · Environmental Science & Technology · doi:10.1021/es304023p · Cited by 314
Metadata
- Authors
- Ho, C., Yau, S. K., Lok, C., So, M., & Che, C.
- Venue
- Chemistry – An Asian Journal
- Publisher
- Wiley
- Published
- 2010-01-28
- Volume
- 5
- Issue
- 2
- Pages
- 285-293
- ISSN
- 1861-471X (ISSN-L)
- 1861-4728
- OpenAlex
- W1969985034
- Cited by
- 177
- References
- 3
- FWCI
- 6.80
- Type
- journal article
- Language
- en
- Open access
- closed
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- Ho, C., Yau, S. K., Lok, C., So, M., & Che, C. (2010). Oxidative Dissolution of Silver Nanoparticles by Biologically Relevant Oxidants: A Kinetic and Mechanistic Study. Chemistry – An Asian Journal. https://doi.org/10.1002/asia.200900387
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