Tổng hợp thủy nhiệt và nâng cao hoạt tính quang xúc tác của nanocomposite TiO2-FeNTs cho methylene xanh suy thoái dưới chiếu xạ ánh sáng nhìn thấy

• Ngôn ngữ: vie
• Ký hiệu phân loại: 541.35 Photochemistry
• Thông tin xuất bản: Communication in Physics, 2014
• Mô tả vật lý: 363-369
• Bộ sưu tập: Metadata
• ID: 553955

Tóm tắt

 TiO2 is one of the most attractive metal oxides because of the excellent chemical and photocatalytic properties. However
  a problem in the application of TiO2 is the large hand gap energy of 3.2 eV, corresponding to its photocatalytic activity under UV-light irradiation of wavelengths 387 nm. In this work, TiO2 nanoparticles doped with iron were grown on the surface offunctionalized carbon nanotubes (TiO2-FeNTs) to expand the photoabsorbance of the nanocomposite materials in the visible light region and improve their photocatalytic activity. TiO2-FeNTs nanocomposite materials were synthesized by hydrothermal route in Teflon-sealed autoclave at iso'c for 10h. The FESEM and X-Ray diffraction measurements were taken for morphology and structural analysis of TiO2 nanoparticles doped with Fe coating on CNTs. The effects of the iron and CNTs on the enhanced photocatalytic activity for methylene blue degradation under AM 1.5 illumination of 100 mw/cm were investigated.