RT Journal Article
T1 Adenosine-monophosphate-assisted homogeneous silica coating of silver nanoparticles in high yield
A1 Fernandez Lodeiro, Carlos
A1 Tambosi, Reem
A1 Fernández Lodeiro, Javier
A1 Fernández Lodeiro, Adrián
A1 Nuti, Silvia
A1 Ouchane, Soufian
A1 Kébaïli, Nouari
A1 Pérez Juste, Jorge
A1 Pastoriza Santos, Isabel
A1 Lodeiro, Carlos
K1 2307 Química Física
AB In this study, we propose a novel approach for the silica coating of silver nanoparticles based on surface modification with adenosine monophosphate (AMP). Upon AMP stabilization, the nanoparticles can be transferred into 2-propanol, promoting the growth of silica on the particle surfaces through the standard Stöber process. The obtained silica shells are uniform and homogeneous, and the method allows a high degree of control over shell thickness while minimizing the presence of uncoated NPs or the negligible presence of core-free silica NPs. In addition, AMP-functionalized AgNPs could be also coated with a mesoporous silica shell using cetyltrimethylammonium chloride (CTAC) as a template. Interestingly, the thickness of the mesoporous silica coating could be tightly adjusted by either the silica precursor concentration or by varying the CTAC concentration while keeping the silica precursor concentration constant. Finally, the influence of the silica coating on the antimicrobial effect of AgNPs was studied on Gram-negative bacteria (R. gelatinosus and E. coli) and under different bacterial growth conditions, shedding light on their potential applications in different biological environments.
PB Nanomaterials
SN 20794991
YR 2023
FD 2023-10-18
LK http://hdl.handle.net/11093/5273
UL http://hdl.handle.net/11093/5273
LA eng
NO Nanomaterials, 13(20): 2788 (2023)
NO Agencia Estatal de Investigación | Ref. PID2019-108954RB-I00
DS Investigo
RD 23-ene-2025