Preparation of γ-Ce₂S₃@ZrO₂ Red Pigment by Hydrolysis Combined Hydrothermal Two Steps Method

Abstract:

The core-shell red pigment γ-Ce₂S₃@ZrO₂ was prepared by a two step method. γ-Ce₂S₃ was pre-coated at 30°C with hydrolysis, followed by hydrothermal reaction at 180 °C for further coating and crystallization. The effect of preparation method, hydrolysis dropping speed and the number of hydrothermal process on the microstructure of the ZrO₂ layer was observed. The influence of coating layer to chromaticity, heat resistance and acid stability was also investigated. The results show that a complete layer at nearly 90 nm coated on the surface of the γ-Ce₂S₃ particles. The as-prepared pigment exhibited pure red color (L* = 44.38, a* = 31.94, b* = 23.14). Moreover, this coating layer can provide protection to pigment particles. The core-shell pigment can remain red color (L* = 42.71, a* = 26.23, b* =18.38) after calcined in air at 380 °C, while uncoated pigment turned to grey dark at 360 ^oC.

• Periodical: Key Engineering Materials (Volume 768)
• Pages: 172-178
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.768.172
• Online since: April 2018
• Authors: Y.Q. Gao, Yue Ming Li*, Zhu Mei Wang, Zong Yang Shen, Zhi Xiang Xie
• Keywords: Core-Shell Red Pigment, Two Steps Method, Zro₂, γ-Ce₂S₃

References

[1] M. Patrick, Use of coloured pigments based on rare earths sulphurs in plastics, paints, or vanishes, European Patent: EP0203838(A2),(1986).

[2] S. Hirai, K. Shimakage, Y. Saitou, Synthesis and sintering of cerium(III) sulfide powders, J. Am. Ceram. Soc. 81 (1998) 145-151.

DOI: 10.1111/j.1151-2916.1998.tb02306.x

[3] S.Y. Yu, D. R. Wang, X. L. Gao, Effects of the precursor size on the morphologies and properties of γ-Ce2S3 as a pigment, J. Rare Earths. 32 (2014) 540-544.

DOI: 10.1016/s1002-0721(14)60105-8

[4] D. Xu, J. T. Wu, L. Jiao, Highly nonlinear property and threshold voltage of Sc2O3 doped ZnO-Bi2O3-based varistor ceramics, J. Rare Earths. 31 (2013) 158-163.

DOI: 10.1016/s1002-0721(12)60251-8

[5] T. Chopin, D. Dupuis, Rare earth metal sulfide pigment compositions, United States Patent: US5401309A, (1995).

[6] G. H. Chen, Z. F. Zhu, H. Liu, Preparation of SiO2 coated Ce2S3 red pigment with improved thermal stability, J. Rare Earths, 31 (2013) 891-896.

DOI: 10.1016/s1002-0721(12)60375-5

[7] S. Y. Yu, D. R. Wang, Y. Liu, Preparations and characterizations of γ-Ce2S3@SiO2 pigments from precoated CeO2 with improved thermal and acid stabilities, RSC Adv. 45 (2014) 23653-23657.

DOI: 10.1039/c4ra02866j

[8] S. G. Liu, Y. M. Li, Z. M. Wang, Enhanced high temperature oxidization resistance of silica coated-Ce2S3 red pigments, Appl. Surf. Sci. 387 (2016) 1147-1153.

DOI: 10.1016/j.apsusc.2016.07.046

[9] S. T. Zhang, M. Q. Ye, S. L. Chen, Synthesis and characterization of mica/γ-Ce2-xYxS3 compositered pigments with UV absorption and high NIR reflectance, Ceram. Int. 42 (2016) 16023-16030.

DOI: 10.1016/j.ceramint.2016.07.111

[10] W. X. Mao, W. Zhang, Z. X. Chi, Core–shell structured Ce2S3@ZnO and its potential as a pigment, J. Mater. Chem. A. 3 (2015) 2176-2180.

[11] Y. Zhang, D. Z. Zeng, P. G. Rao, Hydrothermal synthesis of cadmium sulfoselenide inclusion pigment, J. Sol-Gel Sci. Technol. 48 (2008) 289-293.

DOI: 10.1007/s10971-008-1838-5

[12] L. Yuan, X. L. Weng, J. L. Xie, Solvothermal synthesis and visible/infrared optical properties of Al/Fe3O4 core–shell magnetic composite pigments, J. Alloys Compd. 580 (2013) 108-113.

DOI: 10.1016/j.jallcom.2013.05.100

[13] W. H. Jiang, X. Y. Xu, T. Chen, Preparation and chromatic properties of C@ZrSiO4 inclusion pigment via non-hydrolytic sol-gel method, Dyes & Pigment. 114 (2015) 55-59.

DOI: 10.1016/j.dyepig.2014.10.017

[14] Q. B. Chang, X. Wang, Y. Q. Wang, Encapsulated carbon black prepared by sol–gel-spraying: A new black ceramic pigment, J. Eur. Ceram. Soc. 34(2014) 3151–3157.

DOI: 10.1016/j.jeurceramsoc.2014.03.020

[15] F. Zhao, Y. F. Gao, H. G. Luo, Reactive formation of zircon inclusion pigments by deposition and subsequent annealing of a zirconia and silica double shell, Langmuir. 25 (2009) 13295-13297.

DOI: 10.1021/la903197t

[16] K .H. Xue, J. C. Bao, Nano Chemistry: Chemical construction and application of nanometer system, Beijing: Chemical Industry Press, (2006)56.

[17] C. Peng, C. X. Zhang, M. Lv, Preparation of silica encapsulated carbon black with high thermal stability, Ceram. Int. 39 (2013) 7247-7253.

DOI: 10.1016/j.ceramint.2013.01.078