Preparation of CaCO3/TiO2@SiO2 pigments by the one-pot method: Surface-coated SiO2 improves the weatherability of pigments
Source abstract
Abstract
In this paper, a CaCO 3/TiO 2@SiO 2 composite pigment (CTS) was prepared by a carbonation reaction using a one-pot method. CTS can reduce the amount of rutile TiO 2 needed and improve the weatherability compared with TiO 2 and CaCO 3/TiO 2 (CT). The performance test results showed that the composite pigment with 60% TiO 2 has a coating film contrast ratio of 91.05% of pure TiO 2, and the oil absorption and whiteness values were also close to those of pure TiO 2, indicating that the CTS has good pigment properties. The XPS and infrared results showed that the bonding of CaCO 3, TiO 2, and SiO 2 occurred at the interface. The tight bonding of the three substances was realized through a dehydroxylation reaction on the surface. In addition, the SiO 2 layer weaken the photocurrent response of TiO 2 in the CTS and reduced the UV absorption of the composite pigment, which slowed the degradation rate of rhodamine B in the composite pigment coatings; thus, the CTS exhibits excellent weatherability performance in coating applications.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Pigment Synthesis and Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (33)
Show source-provided references
1. Mineral-TiO2 composites: preparation and application in papermaking, paints and plastics10.1016/j.jallcom.2020.156139 ↗
2. Effects of organic modifiers on the properties of TiO2-coated CaCO3 composite pigments prepared by the hydrophobic aggregation of particles10.1016/j.apsusc.2018.06.185 ↗
3. Characterization of talc/TiO2 composite particle material prepared by mechano-chemical method10.1142/S0218625X2050047X ↗
4. Preparation of a microsphere SiO2/TiO2 composite pigment: the mechanism of improving pigment properties by SiO210.1016/j.ceramint.2020.06.068 ↗
5. Preparation of TiO2-coated barite composite pigments by the hydrophobic aggregation method and their structure and properties
6. Mechanical grinding preparation and characterization of TiO2-coated wollastonite composite pigments
7. Preparation of Sericite-TiO2 Composite Particle Material by Mechano-Chemical Method and Its Application
8. Characterization of calcined Kaolin/TiO2 composite particle material prepared by mechano-chemical method10.1007/s11595-010-0088-x ↗
9. Preparation of CaCO3-TiO2 composite particles and their pigment properties
10. Mass production and application of TiO2@CaCO3 composites in interior emulsion coatings10.1016/j.colsurfa.2016.03.038 ↗
11. Titanium dioxide and other nanomaterials based antimicrobial additives in functional paints and coatings: Review
12. Operando electrochemical study of charge carrier processes in water splitting photoanodes protected by atomic layer deposited TiO210.1039/C9SE00399A ↗
13. Preparation of "green" carbon quantum dots coated core-shell type pearl pigment Kieselguhr@TiO2@TiO2-x10.1016/j.matchemphys.2019.122518 ↗
14. Fabrication of rutile-type TiO2/SiO2 core/shell particles with both high photoactivity and UV-shielding property10.1021/la1008413 ↗
15. Preparation of TiO2@ZrO2@AlOOH@polymethyl acrylic acid nanocomposites and the impact of layer structure on color scheme, photocatalytic activity, and dispersion stability10.1021/acs.iecr.0c05110 ↗
16. Silica-coated titania and zirconia colloids for subsurface transport field experiments10.1021/es9909531 ↗
17. Preparation of TiO2@ZrO2@SiO2@MAA nanocomposites and impact of layer structure on pigmentary performance10.1016/j.matchemphys.2021.124403 ↗
18. Eliminated phototoxicity of TiO2 particles by an atomic-layer-deposited Al2O3 coating layer for UV-protection applications10.1002/chem.201600815 ↗
19. A sol-gel route to prepare CeOx dot-decorated TiO2 pigment with improved weatherability
20. A novel rutile TiO2/AlPO4 core-shell pigment with substantially suppressed photoactivity and enhanced dispersion stability10.1016/j.powtec.2020.03.002 ↗
21. Evolution of zirconia coating layer on rutile TiO2 surface and the pigmentary property10.1016/j.jpcs.2010.07.013 ↗
22. Control of the photocatalytic activity of TiO2 nanoparticles by silica coating with polydiethoxysiloxane10.1016/j.dyepig.2007.01.020 ↗
23. Effects of coating parameters on the morphology of SiO2-coated TiO2 and the pigmentary properties10.1016/j.apsusc.2007.10.021 ↗
24. Characterization of Brucite/TiO2 composite particle material prepared by mechano-chemical method10.1142/S0218625X18500853 ↗
25. Superhydrophilic wollastonite-nanoTiO2 composite photocatalyst prepared by a wet grinding method: The effects of carriers and their application in the self-cleaning coatings10.1016/j.ceramint.2022.01.259 ↗
26. Physicochemical properties and photocatalytic activity of the TiO2/SiO2 prepared by precipitation method10.1016/j.seppur.2013.01.037 ↗
27. CO2 mineralization of carbide slag for the production of light calcium carbonates10.1016/j.cjche.2022.02.011 ↗
28. Preparation of a CaCO3-TiO2 composite based opaque glaze: insight into the mechanism of opacification and glaze yellowing inhibition10.1016/j.jeurceramsoc.2020.07.063 ↗
29. A zirconium-free glaze system for sanitary ceramics with SiO2-CaCO3-TiO2 composite opacifier containing anatase: effect of interface combination among SiO2, CaCO3 and TiO210.1016/j.jeurceramsoc.2021.12.069 ↗
30. Synthesis of perovskite by solid-phase method with metatitanic acid and calcium carbonate and its pigment properties investigation
31. Solid-phase synthesis of perovskite using spent SCR catalyst and calcium carbonate and its application as ceramic opacifier10.1016/j.jiec.2022.07.039 ↗
32. A semiconductor-insulator heterojunction induced by hydroxyl groups formed on the surface of SiO2 microspheres10.1016/j.apsusc.2020.147385 ↗
33. Insights into the composite coating for improving the weatherability of TiO2 white pigments10.1007/s11998-023-00809-z ↗