Preparation of a microsphere SiO2/TiO2 composite pigment: The mechanism of improving pigment properties by SiO2

Sun, S; Ding, H; Wang, J; Li, W; Hao, Q

Preparation of a microsphere SiO2/TiO2 composite pigment: The mechanism of improving pigment properties by SiO2

Sun, S Ding, H Wang, J Li, W Hao, Q

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Publisher:: ELSEVIER SCI LTD
Publication Type:: Journal Article
Citation:: Ceramics International, 2020, 46, (14), pp. 22944-22953
Issue Date:: 2020-10-01

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Field	Value	Language
dc.contributor.author	Sun, S
dc.contributor.author	Ding, H
dc.contributor.author	Wang, J
dc.contributor.author	Li, W
dc.contributor.author	Hao, Q https://orcid.org/0000-0001-9981-7499
dc.date.accessioned	2021-03-28T23:39:23Z
dc.date.available	2021-03-28T23:39:23Z
dc.date.issued	2020-10-01
dc.identifier.citation	Ceramics International, 2020, 46, (14), pp. 22944-22953
dc.identifier.issn	0272-8842
dc.identifier.issn	1873-3956
dc.identifier.uri	http://hdl.handle.net/10453/147590
dc.description.abstract	© 2020 Elsevier Ltd and Techna Group S.r.l. In this study, a microsphere SiO2/TiO2 composite pigment (M-SiO2/TiO2) was prepared through a facile grinding and calcination process. The structure and properties of M-SiO2/TiO2 were characterized in detail, and the mechanism governing the improvement of pigment properties by M-SiO2 was proposed. The results of this study show that M-SiO2 and TiO2 are successfully compounded, and their combination is inferred to be achieved by the formation of Si-O-Ti bonds through the hydroxyl groups on their surface. The M-SiO2/TiO2 has almost the same pigment properties as pure titanium dioxide, while the weight fraction of TiO2 in M-SiO2/TiO2 is 70%, which can significantly reduce the consumption of TiO2. In M-SiO2/TiO2, the introduction of M-SiO2 leads to the improvement of the rutile-phase conversion of TiO2, as well as reducing TiO2 particle size; thus, this step can further improve the pigment properties. When the calcination temperature is 900 °C, the TiO2 in M-SiO2/TiO2 is primarily rutile (rutile conversion rate is 88.57%) with a particle size of 0.1-0.3 μm, exhibiting good dispersion. In contrast, pure TiO2 is primarily composed of anatase (rutile conversion rate is 11.39%) with a particle size of 0.2-0.6 μm, exhibiting serious agglomeration. The M-SiO2/TiO2 composite is expected to be applied in the fields of paint, plastic, and papermaking in an effort to significantly reduce the cost and consumption of TiO2 pigment.
dc.language	English
dc.publisher	ELSEVIER SCI LTD
dc.relation.ispartof	Ceramics International
dc.relation.isbasedon	10.1016/j.ceramint.2020.06.068
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	03 Chemical Sciences, 09 Engineering, 19 Studies in Creative Arts and Writing
dc.subject.classification	Materials
dc.title	Preparation of a microsphere SiO2/TiO2 composite pigment: The mechanism of improving pigment properties by SiO2
dc.type	Journal Article
utslib.citation.volume	46
utslib.for	090404 Membrane and Separation Technologies
utslib.for	03 Chemical Sciences
utslib.for	09 Engineering
utslib.for	19 Studies in Creative Arts and Writing
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2021-03-28T23:39:18Z
pubs.issue	14
pubs.publication-status	Published
pubs.volume	46
utslib.citation.issue	14

Abstract:

© 2020 Elsevier Ltd and Techna Group S.r.l. In this study, a microsphere SiO2/TiO2 composite pigment (M-SiO2/TiO2) was prepared through a facile grinding and calcination process. The structure and properties of M-SiO2/TiO2 were characterized in detail, and the mechanism governing the improvement of pigment properties by M-SiO2 was proposed. The results of this study show that M-SiO2 and TiO2 are successfully compounded, and their combination is inferred to be achieved by the formation of Si-O-Ti bonds through the hydroxyl groups on their surface. The M-SiO2/TiO2 has almost the same pigment properties as pure titanium dioxide, while the weight fraction of TiO2 in M-SiO2/TiO2 is 70%, which can significantly reduce the consumption of TiO2. In M-SiO2/TiO2, the introduction of M-SiO2 leads to the improvement of the rutile-phase conversion of TiO2, as well as reducing TiO2 particle size; thus, this step can further improve the pigment properties. When the calcination temperature is 900 °C, the TiO2 in M-SiO2/TiO2 is primarily rutile (rutile conversion rate is 88.57%) with a particle size of 0.1-0.3 μm, exhibiting good dispersion. In contrast, pure TiO2 is primarily composed of anatase (rutile conversion rate is 11.39%) with a particle size of 0.2-0.6 μm, exhibiting serious agglomeration. The M-SiO2/TiO2 composite is expected to be applied in the fields of paint, plastic, and papermaking in an effort to significantly reduce the cost and consumption of TiO2 pigment.

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http://hdl.handle.net/10453/147590