AI SearchSynthesis of gold nanoparticles decorating graphene foam and its application to electrochemical and SERS -based sensor
Sultani, Mohammad Ali
Synthesis of gold nanoparticles decorating graphene foam and its application to electrochemical and SERS -based sensor - Pathumthani : Asian Institute of Technology, 2015 - 1 online resource
A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Microelectronics and Embedded Systems
Thesis (M. Sc.) -- Asian Institute of Technology, 2015
Gold nanoparticles have been attracted great attention in research area especially in the field of biomedical sensing and biological sensing in recent years. Gold nanoparticles (AuNPs) were synthesized by electrodeposition technique on the surface of Graphene Foam (GF) by fast scan voltammetry with using Gold (III) chloride trihydrate as the solvent. Then, the synthesized of gold nanoparticles were used in electrochemical sensor and surface-enhanced Raman scattering for detection of sample analyt (hydrogen peroxide) and (methylene blue) respectively. The effect of deposition time and applied potential on the density of AuNPs was investigated in chloroauric acid as a supporting electrolyte. The deposition time was varied by the scan rate and applied potential range. Scanning electron microscopy (SEM) and Surface-Enhanced Raman Scattering (SERS) were used for characterization of synthesized AuNPs onto Graphene Foam. The results confirmed that gold nanoparticles were deposited on the GF substrate with almost spherical geometry. The SERS performance of AuNP-Graphene foam was evaluated using methylene blue (1 nM/L) as a SERS probe molecule. The method is based on drop-drying an analyte solution onto a substrate surface and subsequently analyzed by Raman spectroscopy. Herein, we report the study on the formation of GNPs decorating on Graphene foam, with different applied potential and time.
Synthesis of gold nanoparticles decorating graphene foam and its application to electrochemical and SERS -based sensor - Pathumthani : Asian Institute of Technology, 2015 - 1 online resource
A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Microelectronics and Embedded Systems
Thesis (M. Sc.) -- Asian Institute of Technology, 2015
Gold nanoparticles have been attracted great attention in research area especially in the field of biomedical sensing and biological sensing in recent years. Gold nanoparticles (AuNPs) were synthesized by electrodeposition technique on the surface of Graphene Foam (GF) by fast scan voltammetry with using Gold (III) chloride trihydrate as the solvent. Then, the synthesized of gold nanoparticles were used in electrochemical sensor and surface-enhanced Raman scattering for detection of sample analyt (hydrogen peroxide) and (methylene blue) respectively. The effect of deposition time and applied potential on the density of AuNPs was investigated in chloroauric acid as a supporting electrolyte. The deposition time was varied by the scan rate and applied potential range. Scanning electron microscopy (SEM) and Surface-Enhanced Raman Scattering (SERS) were used for characterization of synthesized AuNPs onto Graphene Foam. The results confirmed that gold nanoparticles were deposited on the GF substrate with almost spherical geometry. The SERS performance of AuNP-Graphene foam was evaluated using methylene blue (1 nM/L) as a SERS probe molecule. The method is based on drop-drying an analyte solution onto a substrate surface and subsequently analyzed by Raman spectroscopy. Herein, we report the study on the formation of GNPs decorating on Graphene foam, with different applied potential and time.