Hydrothermal synthesis,structure and photocatalytic property of nano-TiO2-MnO2 |
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| Authors: | Shiwen?Ding author-information" > author-information__contact u-icon-before" > mailto:dingsw@mail.hbu.edu.cn" title=" dingsw@mail.hbu.edu.cn" itemprop=" email" data-track=" click" data-track-action=" Email author" data-track-label=" " >Email author,Liyong?Wang,Shaoyan?Zhang,Qiuxiang?Zhou,Yu?Ding,Shujuan?Liu,Yanchao?Liu,Quanying?Kang |
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| Affiliation: | (1) College of Chemistry and Environmental Science, Hebei University, 071002 Baoding, China;(2) Langfang Teachers College, 065000 Langfang, China;(3) College of Quantity Monitor, Hebei University, 071002 Baoding, China |
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| Abstract: | TiCl4 and MnSO4· H2O as raw materials are hydrolyzed stiochiometrically, following the intermediate of oxide hydrating reacts at 150°C, 0.5 MPa in high-pressure reactor, after filtering, washing and drying, nanometric TiO2-MnO2 (Ti1-X Mn X O2) is prepared. The effects of the reaction temperature and time on nanometric TiO2-MnO2 are also discussed. XRD shows that the product is TiO2-MnO2 with amorphous phase. After being sintered at above 780 °C, it transfers into Ti1-X Mn X O2 with a rutile structure. TEM shows that TiO2-MnO2 is the spherical particle. And the average diameter of the particles is 20 nm. The optical absorbance was determined by UV-265 spectrophotometer after dispersing the sample in the mixture of water and glycerol with the ratio of 1 : 1 equably. It is found that the nano-material possesses the advantages of both nano-TiO2 and nano-MnO2, and it has strong absorption in the UV and visible region. Photodegradation of dyes in an aqueous solution is investigated using nanometricTiO2-MnO2 as a photocatalyst. The results show that after 60 min illumination, the decolorization rate of the acidic red B and acidic black 234 dye can be as high as 100%. |
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| Keywords: | nanometric TiO2-MnO2 chem-adulteration hydrothermal synthesis UV absorption photocatalysis |
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