J 2022

One-step synthesis of gold nanoparticles for catalysis and SERS applications using selectively dicarboxylated cellulose and hyaluronate

VAVROVA, Alzbeta, Tereza CAPKOVA, Ivo KURITKA, Jan VICHA, Lukas MUNSTER et. al.

Základní údaje

Originální název

One-step synthesis of gold nanoparticles for catalysis and SERS applications using selectively dicarboxylated cellulose and hyaluronate

Autoři

VAVROVA, Alzbeta, Tereza CAPKOVA, Ivo KURITKA, Jan VICHA a Lukas MUNSTER

Vydání

International journal of biological macromolecules, AMSTERDAM, Elsevier Science BV, Netherlands, 2022, 0141-8130

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10608 Biochemistry and molecular biology

Stát vydavatele

Nizozemské království

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 8.200

Kód RIV

RIV/00216224:14740/22:00128762

Organizační jednotka

Středoevropský technologický institut

UT WoS

000795917600007

Klíčová slova anglicky

Dicarboxypolysaccharides; Dicarboxylated cellulose; Dicarboxylated hyaluronate; Gold nanoparticles; Surface-enhanced Raman scattering; Catalysis

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 28. 2. 2023 14:57, Mgr. Pavla Foltynová, Ph.D.

Anotace

V originále

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.

Návaznosti

90127, velká výzkumná infrastruktura
Název: CIISB II