Optical, thermal and dielectric studies of silver-silica nanoparticles synthesized via sol-gel technique

• Main Authors: Taib, Taifunisyam, Al-Bat’hia,, Souad A. M., Johan, Mohd Rafie, Basirun, Wan Jefrey, Chin, Kim Ming, Chia, Chang Cherng, Tan, Jia Herng
• Format: Article
• Language: English; English
• Published: Trans Tech Publications 2016
• Subjects: TK2896 Production of electricity by direct energy conversion
• Online Access: http://irep.iium.edu.my/54238/7/54238-Optical%2C%20thermal%20and%20dielectric%20studies%20of%20silver-silica%20nanoparticles%20synthesized%20via%20sol-gel%20technique_SCOPUS.pdf; http://irep.iium.edu.my/54238/13/54238_Optical%2C%20thermal%20and%20dielectric.pdf; http://irep.iium.edu.my/54238/; http://www.scientific.net/MSF.846.318

Silver-silica nanocomposites (Ag-SiO2NCs), with unique properties such as highly resonant particle plasmons, conductivity and potential applications in optics and various nanoelectronics are very attractive materials for sensing probes in biotechnology. Ag-SiO2NCs with various compositions were synthesized through sol-gel technique. The morphology, optical and thermal stability of the nanocomposite were investigated and was compared with pure sol-gel to determine the effects of the nanoparticles. Transmission electron microscopy (TEM) confirmed that SiO2 was encapsulated Ag with mean size of 30 nm. Uv-vis spectroscopy shows that the surface plasmon resonance (SPR) peak show Ag-SiO2 NCs were greatly reduce due to the SiO2 particles. The permittivity and refractive index were decreased as the composition of Ag was increased at composition of 60% silver. The real permittivity is negative along the visible region. The trend stability of Ag-SiO2NCs were increased with the increased amount of silver.