Synthesis and Organization of Gold-Peptide Nanoparticles for Catalytic Activities
Type
ArticleKAUST Department
Biological and Environmental Science and Engineering (BESE) DivisionBioscience Program
Computational Bioscience Research Center (CBRC)
Date
2022-01-06Submitted Date
2021-10-05Permanent link to this record
http://hdl.handle.net/10754/675020
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A significant development in the synthesis strategies of metal-peptide composites and their applications in biomedical and bio-catalysis has been reported. However, the random aggregation of gold nanoparticles provides the opportunity to find alternative fabrication strategies of gold-peptide composite nanomaterials. In this study, we used a facile strategy to synthesize the gold nanoparticles via a green and simple approach where they show self-alignment on the assembled nanofibers of ultrashort oligopeptides as a composite material. A photochemical reduction method is used, which does not require any external chemical reagents for the reduction of gold ions, and resultantly makes the gold nanoparticles of size ca. 5 nm under mild UV light exposure. The specific arrangement of gold nanoparticles on the peptide nanofibers may indicate the electrostatic interactions of two components and the interactions with the amino group of the peptide building block. Furthermore, the gold-peptide nanoparticle composites show the ability as a catalyst to degradation of environmental pollutant p-nitrophenol to p-aminophenol, and the reaction rate constant for catalysis is calculated as 0.057 min–1 at a 50-fold dilute sample of 2 mg/mL and 0.72 mM gold concentration in the composites. This colloidal strategy would help researchers to fabricate the metalized bioorganic composites for various biomedical and bio-catalysis applications.Citation
Abbas, M., Susapto, H. H., & Hauser, C. A. E. (2022). Synthesis and Organization of Gold-Peptide Nanoparticles for Catalytic Activities. ACS Omega. doi:10.1021/acsomega.1c05546Sponsors
The authors thank the King Abdullah University of Science and Technology for financial support for this work. The authors acknowledge Mohamed Nejib from KAUST Core Labs for his help in recording the XPS spectra.Publisher
American Chemical Society (ACS)Journal
ACS OmegaAdditional Links
https://pubs.acs.org/doi/10.1021/acsomega.1c05546ae974a485f413a2113503eed53cd6c53
10.1021/acsomega.1c05546
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Except where otherwise noted, this item's license is described as This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Omega, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acsomega.1c05546.