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TiO2具有化学稳定性好、成本低、耐腐蚀、无毒以及独特的光学、电学性质,纳米TiO2是目前最具应用前景的光催化剂。采用溶胶—凝胶法制备了F掺杂的TiO2光催化剂,用X-射线衍射(XRD)和紫外-可见光谱(UV-Vis)对其进行了表征,并通过降解甲基橙溶液来检测其光催化性能,研究了不同掺杂量、煅烧温度、煅烧时间等制备条件对F-TiO2光催化剂光催化性能的影响。结果表明,制备出的F-TiO2比未掺杂的TiO2具有较好的可见光响应,紫外光区响应并未受到影响。合成F-TiO2催化剂的最佳条件为F掺杂量为1.4%,煅烧温度600℃,煅烧时间2h。
TiO2 has the advantages of good chemical stability, low cost, corrosion resistance, non-toxicity and unique optical and electrical properties. TiO2 is the most promising photocatalyst at present. F-doped TiO2 photocatalysts were prepared by sol-gel method and characterized by X-ray diffraction (XRD) and UV-Vis spectroscopy. The degradation of methyl orange solution The photocatalytic performance of F-TiO2 photocatalysts was studied. The effects of different doping amount, calcination temperature and calcination time on the photocatalytic activity of F-TiO2 photocatalysts were studied. The results show that the prepared F-TiO2 has better visible light response than undoped TiO2, and the response of the ultraviolet region is not affected. The optimal conditions for the synthesis of F-TiO2 catalyst were F-doping amount 1.4%, calcination temperature 600 ℃ and calcination time 2h.