糠醛/8-羟基喹啉铝聚合物复合纳米TiO_2光催化剂的研究

Study of photocatalyst coated nanometer TiO_2 with furfural and oxine-Al^(3+) polymer

通过糠醛/8-羟基喹啉铝聚合物(PFQ)与纳米TiO_2的复合制得了光活性很高的催化剂,并通过FTIR,UV-Vis,ESR等手段对光催化剂进行了表征。结果表明糠醛/8-羟基喹啉铝聚合物与纳米TiO_2复合后,拓宽了纯纳米TiO_2的光谱响应范围,使光催化剂在可见光范围都有很强的吸收。并用该催化剂对甲基橙进行了光降解反应,实验表明在自然光下,该催化剂十几分钟就能使甲基橙染料完全褪色。

Photocatalyst coated nanomeyer TiO_2 with furfural and oxineoAl^(3+) polymer was synthesized using an acid-catalyzed method and characterized by IR, UV-vis and ESR techniques. The results show that the catalysis activity of the photocatalyst of furfural and oxine-Al^(3+) polymer/nanometer TiO_2 complex after calcinations was higher than pure TiO_2 and polymer. The aimed catalyst has been found to be modifying the nanometer TiO_2 with furfural and oxine-Al^(3+) polymer, resulting in the shift of the absorption band to longer wavelength regions, i. e. into the visible light region, whereas pure TiO_2 absorb ultraviolet rays(<380 nm) only. Furthermore studies showed that the photocatalyst employed in this paper could depigmentize methyl orange solution in a few minutes under visible light. Furfural and oxine-Al^(3+) polymer/TiO_2 complex after calcinations was a photocatalyst with high catalytical activity.