Abstract
This is the first study on the deployment of direct current atmospheric pressure microplasma technique for the single step synthesis of gold nanoparticle/graphene oxide (AuNP/GO) nanocomposites. The nanocomposites were characterized using ultraviolet–visible spectroscopy (UV–vis), x-ray diffraction and x-ray photoelectron spectroscopy and their formation mechanisms have been discussed in detail. Our AuNP/GO nanocomposites are highly biocompatible and have demonstrated surface enhanced Raman scattering (SERS) properties as compared to pure AuNPs and pure GO. Their potential as SERS substrate has been further demonstrated using probe molecules (methylene blue) at different concentrations.
Highlights
Atmospheric pressure microplasma (APM) operates at room temperature under non-thermal equilibrium conditions with high electron temperature (e.g. 104 K)[1,2]
We demonstrated the first use of a direct current (DC) APM for the one-step synthesis of
An in-depth understanding has been developed into the interfacial ce interactions between AuNP and Graphene oxide (GO) during the APM assisted synthesis process and the formation mechanism of AuNP/GO nanocomposites under the plasma induced chemistry has been elucidated in detail
Summary
Atmospheric pressure microplasma (APM) operates at room temperature under non-thermal equilibrium conditions with high electron temperature (e.g. 104 K)[1,2]. We have developed the rapid and green APM synthesis cri pt process for the fabrication of AuNP decorated carbon nanotubes with enhanced photothermal conversion capability[16]. These preliminary results highlight the exciting possibility of using APM to synthesize a wide range of advanced nanocomposites for functional applications. In SERS sensing, AuNPs with localized surface plasmon resonance (LSPR) property could an lead to a much higher Raman signal enhancement through the electromagnetic mechanism (EM)[24]. An in-depth understanding has been developed into the interfacial ce interactions between AuNP and GO during the APM assisted synthesis process and the formation mechanism of AuNP/GO nanocomposites under the plasma induced chemistry has been elucidated in detail. The resulting AuNP/GO nanocomposites have been evaluated for their biocompatibility and their potential as SERS substrate has been demonstrated using a model probe molecule methylene blue (MB)
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
