Structural verification and optical characterization of SiO2�?�Au�?�Cu2O nanoparticles

Bulletin of materials science

Masoud Karimipour¹  Nasser Shahtahmasebi³  M M Bagheri Mohagheghi²  Hossein Rezvani Nikabadi³  Mahmood Rezaee Rokn-Abadi³ 

[1] Department of Physics, Vali-E-Asr University of Rafsanjan, 77139-36417 Rafsanjan, Iran$$Department of Physics, Vali-E-Asr University of Rafsanjan, 77139-36417 Rafsanjan, IranDepartment of Physics, Vali-E-Asr University of Rafsanjan, 77139-36417 Rafsanjan, Iran$$;School of Physics, Damghan University, Damghan, Iran$$School of Physics, Damghan University, Damghan, IranSchool of Physics, Damghan University, Damghan, Iran$$;Physics Department, Ferdowsi University of Mashhad, Mashhad, Iran$$Physics Department, Ferdowsi University of Mashhad, Mashhad, IranPhysics Department, Ferdowsi University of Mashhad, Mashhad, Iran$$

关键词: Plasmon;    blue shift;    SiO2â€�?�Auâ€�?�Cu2O core/shell/shell;    solâ€�?�gel;    APTES molecules.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

In this paper, SiO₂â€�?�Auâ€�?�Cu₂O core/shell/shell nanoparticles were synthesized by reducing gold chloride on 3-amino-propyl-triethoxysilane molecules attached silica nanoparticle cores for several stages. Cu₂O nanoparticles were synthesized readily with the size of 4â€�??5 nm using a simple route of solâ€�?�gel method. Then, they were clung to the surface of Au seeds. The morphology of the resultant particles was studied using transmission electron microscopy (TEM) and scanning electron microscopy (SEM). Transmission electron microscopy images demonstrate growth of monodispersed gold seeds and Cu₂O nanoparticles in narrow size up to 10 nm and 5 nm, respectively. The presence of gold and Cu₂O coating was confirmed by X-ray diffraction, Fourier transform infrared spectroscopy and UVâ€�?�Vis spectroscopy. Absorption spectroscopy shows considerably 40 nm blue shift in absorption edge for SiO₂â€�?�Auâ€�?�Cu₂O nanostructure rather than SiO2â€�?�Au core/shell nanoparticles.

【 授权许可】

Unknown