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- E-ISSN 2288-8985
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- P-ISSN1225-0163
- E-ISSN2288-8985
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Photocatalytic effect for the pitch-coated TiO2
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2006, v.19 no.4, pp.301-308
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(2006). Photocatalytic effect for the pitch-coated TiO2. Analytical Science and Technology, 19(4), 301-308.
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Abstract
Pitch-coated anatase <TEX>$TiO_2$</TEX> typed was prepared by <TEX>$CCl_4$</TEX> solvent mixing method with different mixing ratios. Since the carbon layers derived from pitch on the <TEX>$TiO_2$</TEX> particles were porous, the pitch-coated <TEX>$TiO_2$</TEX> sample series showed a good adsorptivity and photo decomposition activity. The BET surface area depends on the pitch contents, which was made by changing the mixing ratios of the pitch with the raw <TEX>$TiO_2$</TEX>. The SEM results present to the characterization of porous texture on the pitch-coated <TEX>$TiO_2$</TEX> sample and pitch distributions on the surfaces for all the materials used. From XRD data, a weak and broad carbon peak of graphene with pristine anatase peaks were observed in the X-ray diffraction patterns for the pitch-coated <TEX>$TiO_2$</TEX>. The EDX spectra show the presence of C, O and S with strong Ti peaks. Most of these samples are richer in carbon and major Ti metal than any other elements. Finally, the excellent photocatalytic activity of pitchcoated <TEX>$TiO_2$</TEX> with Uv/Vis spectra between absorbance and time could be attributed to the homogeneous coated pitch on the external surface by <TEX>$CCl_4$</TEX> solvent method.
- keywords
- porous carbon, BET surface area, SEM, XRD, EDX, photocatalytic activity
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