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Role of pH in the synthesis and growth of gold nanoparticles using L-asparagine: a combined experimental and simulation study

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    0546894 - FZÚ 2022 RIV GB eng J - Journal Article
    Báez-Cruz, R. - Baptista, L. A. - Ntim, S. - Manidurai, P. - Espinoza Herrera, Shirly J. - Ramanan, C. - Cortes-Huerto, R. - Sulpizi, M.
    Role of pH in the synthesis and growth of gold nanoparticles using L-asparagine: a combined experimental and simulation study.
    Journal of Physics-Condensed Matter. Roč. 33, č. 25 (2021), č. článku 254005. ISSN 0953-8984. E-ISSN 1361-648X
    R&D Projects: GA MŠk EF16_019/0000789; GA MŠk EF15_003/0000447
    Grant - others: OP VVV - ADONIS(XE) CZ.02.1.01/0.0/0.0/16_019/0000789; OP VVV - ELIBIO(XE) CZ.02.1.01/0.0/0.0/15_003/0000447
    Research Infrastructure: ELI Beamlines III - 90141
    Institutional support: RVO:68378271
    Keywords : gold nanoparticles * green-synthesis * L-asparagine * Raman spectroscopy * density functional theory * molecular dynamics
    OECD category: Nano-materials (production and properties)
    Impact factor: 2.745, year: 2021
    Method of publishing: Open access

    The use of biomolecules as capping and reducing agents in the synthesis of metallic nanoparticles constitutes a promising framework to achieve desired functional properties with minimal toxicity. The system's complexity and the large number of variables involved represent a challenge for theoretical and experimental investigations aiming at devising precise synthesis protocols. In this work, we use L-asparagine (Asn), an amino acid building block of large biomolecular systems, to synthesise gold nanoparticles (AuNPs) in aqueous solution at controlled pH. The use of Asn offers a primary system that allows us to understand the role of biomolecules in synthesising metallic nanoparticles. Our results indicate that AuNPs synthesised in acidic (pH 6) and basic (pH 9) environments exhibit somewhat different morphologies.
    Permanent Link: http://hdl.handle.net/11104/0323330

     
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