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Preparation of TiO2 on Ti-wires, or Fixation of Powdered TiO2 onto Wires of Heating Element for Decomposition of Organic Wastes by Thermally-generated Holes at High Temperatures in TiO2

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Titanium dioxide was once extensively investigated as a photoconductor for the electrophotographic photoreceptor at its incunabula. Nowadays, it has attracted attention as a material for photocatalyzers, solar cells as well as their related areas. We report here another application of titanium dioxide. We are so far involved in complete decomposition of organic wastes in air by thermally-generated holes in titanium dioxide of the powdered form. In view of the practical use of the present system, fixation of TiO2 powders onto a support in the form of, for example, a honeycomb seems to be the core technology. To realize this, we have tried in the present investigation to coat heating elements (Ti, Ni-Cr etc.) with TiO2 powders by means of electrophoretic deposition, or to directly oxidize Ti-coated alumina ball by wet hydrogen at 980 °C. Both methods are found to be effective. Then, we have carried out decomposition experiments, with the TiO2-coated wires or balls, of polycarbonate as well as benzene and toluene. We have confirmed that these compounds have completely been decomposed into H2O and CO2 by means of thermally-generated holes.

Document Type: Research Article

Publication date: 2007-01-01

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  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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