Bulletin of the Chinese Ceramic Society, Volume. 42, Issue 2, 657(2023)

Preparation of C@ZrSiO4 Black Pigment by Walnut Shell Powder as Carbon Source

WANG Jiwei1... LI Jiake1,*, LIU Xin1, JIANG Hedong1, GUO Pingchun1, ZHU Hua2 and WANG Yanxiang1 |Show fewer author(s)
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    Zirconium silicate encapsulated carbon (C@ZrSiO4) black pigment was prepared by sol-precipitation method, using walnut shell powder, zirconium oxychloride (ZrOCl2·8H2O) and ethyl silicate (TEOS), etc. as raw materials. The heat effect, chemical structure, phase composition and microstructure of samples were investigated by TG-DSC, FT-IR, XRD, SEM and TEM.The effects of different heat treatment temperatures and mass ratios of walnut shell powder/ZrSiO4(theoretical synthesis, the same below) on the phase composition and chromaticity value of pigment were studied. The results show that the C@ZrSiO4 pigment with excellent coloring performance (L*=31.3, a*=+1.4 and b*=+1.3) can be obtained when heat treatment temperature is 1 100 ℃, and the mass ratio of walnut shell powder/ZrSiO4 is 1∶3. When 5% (mass fraction) C@ZrSiO4 is added to transparent glaze under firing temperature of 1 200 ℃, the black glaze exhibits excellent coloring performance with the color value of L*=41.2, a*=+1.2 and b*=+1.7.

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    WANG Jiwei, LI Jiake, LIU Xin, JIANG Hedong, GUO Pingchun, ZHU Hua, WANG Yanxiang. Preparation of C@ZrSiO4 Black Pigment by Walnut Shell Powder as Carbon Source[J]. Bulletin of the Chinese Ceramic Society, 2023, 42(2): 657

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    Paper Information

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    Received: Oct. 7, 2022

    Accepted: --

    Published Online: Mar. 17, 2023

    The Author Email: Jiake LI (jiakeli.jci@163.com)

    DOI:

    CSTR:32186.14.

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