Synthesis and characterization of organic/inorganic core–shell nanoparticles acted as visible light photocatalyst

• Main Authors: Chun-Chiang Huang, 黃俊強
• Other Authors: Hsieh-Chih Tsai
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/73770526989335418275

博士 === 國立臺灣科技大學 === 應用科技研究所 === 102 === In this study two kind of Core-shell nanoparticles were fabricated. The core materials is based on 5,10,15,20-tetrakis(pentafluorophenyl)-21H,23H-porphine (PF6). Dispersed PF6 nanoparticles were formed in water during dialysis through self-assembly of the PF6 molecules. Therefore, we are trying to coating titanim and gold particle on the suface. The resulting TiO2-modified and gold-modifed particles were characterized using several characteristic methods. In TiO2/PF6 core shell particle, a 10–20 nm thick TiO2 layer on the surface of the PF6 nanoparticles. In Au/PF6 core shell particle, the gold particle was from on the surrounding of PF6. The chemical composition of these core-shell structures was also confirmed. In addition, TiO2/PF6 core shell particle can be utilized as visible photocatalyst. The absorption spectrum of the PF6-TiO2 core-shell nanoparticle was extended to 300–500 nm, which greatly enhanced the photocatalytic efficiency in the visible light spectrum compared to that of bare TiO2.