| VAVROVA, Alzbeta, Tereza CAPKOVA, Ivo KURITKA, Jan VICHA a Lukas MUNSTER. One-step synthesis of gold nanoparticles for catalysis and SERS applications using selectively dicarboxylated cellulose and hyaluronate. International journal of biological macromolecules. AMSTERDAM: Elsevier Science BV, Netherlands, 2022, roč. 206, MAY, s. 927-938. ISSN 0141-8130. Dostupné z: https://dx.doi.org/10.1016/j.ijbiomac.2022.03.043. |
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@article{2262415,
author = {Vavrova, Alzbeta and Capkova, Tereza and Kuritka, Ivo and Vicha, Jan and Munster, Lukas},
article_location = {AMSTERDAM},
article_number = {MAY},
doi = {http://dx.doi.org/10.1016/j.ijbiomac.2022.03.043},
keywords = {Dicarboxypolysaccharides; Dicarboxylated cellulose; Dicarboxylated hyaluronate; Gold nanoparticles; Surface-enhanced Raman scattering; Catalysis},
language = {eng},
issn = {0141-8130},
journal = {International journal of biological macromolecules},
title = {One-step synthesis of gold nanoparticles for catalysis and SERS applications using selectively dicarboxylated cellulose and hyaluronate},
url = {https://www.sciencedirect.com/science/article/pii/S0141813022005098?via%3Dihub},
volume = {206},
year = {2022}
}
TY - JOUR
ID - 2262415
AU - Vavrova, Alzbeta - Capkova, Tereza - Kuritka, Ivo - Vicha, Jan - Munster, Lukas
PY - 2022
TI - One-step synthesis of gold nanoparticles for catalysis and SERS applications using selectively dicarboxylated cellulose and hyaluronate
JF - International journal of biological macromolecules
VL - 206
IS - MAY
SP - 927-938
EP - 927-938
PB - Elsevier Science BV, Netherlands
SN - 01418130
KW - Dicarboxypolysaccharides
KW - Dicarboxylated cellulose
KW - Dicarboxylated hyaluronate
KW - Gold nanoparticles
KW - Surface-enhanced Raman scattering
KW - Catalysis
UR - https://www.sciencedirect.com/science/article/pii/S0141813022005098?via%3Dihub
N2 - Properties and applications of gold nanoparticles (AuNPs) depend on their characteristics which are intrinsically connected to the reducing and capping agents used in their synthesis. Although polysaccharides are commonly used for Au salt reduction, the control over the result is often limited. Here, the selectively dicarboxylated cellulose (DCC) and hyaluronate (DCH) with adjustable composition and molecular weight are used for the first time as reducing and capping agents for AuNPs preparation in an environmental friendly one-step synthesis. Mechanism of reduction and structure-function relationships between the composition of oxidized poly-saccharides and properties of formed AuNPs are elucidated and the variances in the macromolecular architecture of dicarboxypolysaccharides are applied to guide the growth of AuNPs. While the homogenous structure and high density of carboxyl groups of fully-oxidized DCC induced isotropic growth of small and uniform AuNPs with good catalytic performance (d =-20 nm, TOF = 7.3 min(-1), k = 1.47 min(-1)), the lower stabilizing potential and slower reduction rates of the DCH induced the anisotropic growth of larger polyhedral -50 nm nanoparticles, which increased the Surface-Enhanced Raman Scattering efficacy (9x stronger Raman signals on average compared to AuDCC). The use of dicarboxypolysaccharides with adjustable composition and properties thus introduced a new degree of freedom for the preparation of AuNPs with desired properties.
ER -
VAVROVA, Alzbeta, Tereza CAPKOVA, Ivo KURITKA, Jan VICHA a Lukas MUNSTER. One-step synthesis of gold nanoparticles for catalysis and SERS applications using selectively dicarboxylated cellulose and hyaluronate. \textit{International journal of biological macromolecules}. AMSTERDAM: Elsevier Science BV, Netherlands, 2022, roč.~206, MAY, s.~927-938. ISSN~0141-8130. Dostupné z: https://dx.doi.org/10.1016/j.ijbiomac.2022.03.043.
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