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  • Alumina surface treated pigmentary titanium dioxide with suppressed photoactivity [Elektronski vir]
    Veronovski, Nika ; Lešnik, Maja, kemik, 1987- ; Verhovšek, Dejan, 1981-
    The aim of the optimization of the technological process was to coat the surface of the pigment in a controlled manner and to supress photoactivity in the titanium dioxide (TiO2) pigment. As part of ... this research, a systematic approach to TiO2 pigment surface treatment with alumina was conducted. Surface treatment with alumina plays a significant role in the improvement of TiO2 properties (e.g. weather resistance and photostability). This research encompasses a raw material analysis and process conditions study. Sodium aluminate and aluminium sulphate were used as a source of alumina hydroxide. The effectiveness of surface treatment was determined using scanning-transmission (STEM) and transmission (TEM) electron microscopy. The photoactivity of pigmentary TiO2 was determined before and after surface treatment. A controlled surface treatment process resulted in pigmentary TiO2 particles with uniform amorphous layers, which supressed the photoactivity of the pigment.
    Source: Journal of coating science and technology. - ISSN 2369-3355 (Vol. 1, no. 1, 2014, str. 51-58)
    Type of material - e-article ; adult, serious
    Publish date - 2014
    Language - english
    COBISS.SI-ID - 19962933

    Link(s):

    https://www.lifescienceglobal.com/pms/index.php/jcst/article/view/2121/pdf_5
    DOI

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