02600nam a2200265 a 450000500170000000800410001703500150005810000270007324501240010026000560022430000220028050001440030250200590044652014140050570000380191970000450195770000570200271000930205971000340215285600650218690700250225190200110227699800280228799900190231520260818223733.0                                          a.b123582041 aSultani, Mohammad Ali 10aSynthesis of gold nanoparticles decorating graphene foam and its application to electrochemical and SERS -based sensor   aPathumthani :bAsian Institute of Technology,c2015  e1 online resource  aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Microelectronics and Embedded Systems   aThesis (M. Sc.) -- Asian Institute of Technology, 2015  a 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. 0 aMongkol Ekpanyapong,eChairperson1 aBohez, Erik L.J.,eExamination Committee0 aAttaphongse Taparugssanagorn,eExamination Committee2 aMinistry of Higher Education (MoHE), Afghanistan Partnership Project,eScholarship donor2 aAsian Institute of Technology  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B06100  a.b12358204bmnaitcj  a240425  b0c200108dmea  fjg0  c117128d117128