The influence of titanium dioxide phase composition on dyes photocatalysis
作者： Luminita Andronic , Diana Andrasi , Alexandru Enesca , Maria Visa , Anca Duta
DOI: 10.1007/S10971-010-2378-3
关键词:
摘要: A comparative study of TiO2 powders prepared by sol–gel methods is presented. Titanium tetraisopropoxide was used as the precursor for processes. The effects annealing treatment on phase, crystallite size, porosity and photodegradation dyes (methyl orange methylene blue) were studied. phase structure, microstructure surface properties films characterized using X-ray diffraction (XRD) Atomic Force Microscopy (AFM). crystal identification, accurate estimation anatase–rutile ratio size evaluation each polymorph in samples. It found that only anatase synthesized develops below 500 °C, between 600 800 °C coexist with rutile above Attention has been paid not to structures, but also porosity, particle photocatalytic properties. However, temperature have significant influence Different doctor blade thin obtained mixing sol gel powder (100% anatase) Aldrich Degussa P25. surfactant (Triton X100 or sodium dodecyl sulfate) affects packing density particles during deposition degradation efficiency dyes. kinetics methyl blue film investigated.
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