Deposition of Photocatalytic TiO2 Coating by Modifying the Solidification Pathway in Plasma Spraying

The deposition of photocatalytic TiO2 coatings with plasma spraying is attractive for large-scale applications due to its low cost and simplicity, but it is still a challenge to obtain a TiO2 coating with high anatase content. The solidification pathway of inflight melted particles was investigated...

Full description

Bibliographic Details
Main Authors:	Kui Wen, Min Liu, Xuezhang Liu, Chunming Deng, Kesong Zhou
Format:	Article
Language:	English
Published:	MDPI AG 2017-10-01
Series:	Coatings
Subjects:	photocatalytic coatings solidification plasma spraying TiO2 microstructure
Online Access:	https://www.mdpi.com/2079-6412/7/10/169

id	doaj-771017e94d004ec88732a3853649bf2b
record_format	Article
spelling	doaj-771017e94d004ec88732a3853649bf2b2020-11-25T00:09:36ZengMDPI AGCoatings2079-64122017-10-0171016910.3390/coatings7100169coatings7100169Deposition of Photocatalytic TiO2 Coating by Modifying the Solidification Pathway in Plasma SprayingKui Wen0Min Liu1Xuezhang Liu2Chunming Deng3Kesong Zhou4School of Materials Science and Engineering, Central South University, Changsha 410083, ChinaSchool of Materials Science and Engineering, Central South University, Changsha 410083, ChinaSchool of Materials Science and Engineering, Central South University, Changsha 410083, ChinaNational Engineering Laboratory for Modern Materials Surface Engineering Technology, The Key Lab of Guangdong for Modern Surface Engineering Technology, Guangdong Institute of New Materials, Guangzhou 510651, ChinaSchool of Materials Science and Engineering, Central South University, Changsha 410083, ChinaThe deposition of photocatalytic TiO2 coatings with plasma spraying is attractive for large-scale applications due to its low cost and simplicity, but it is still a challenge to obtain a TiO2 coating with high anatase content. The solidification pathway of inflight melted particles was investigated in the present paper, and TiO2 coatings with enhanced photocatalytic activity were obtained without a significant loss of the microhardness. The coating microstructure, phase composition, and crystallite size were investigated by scanning electron microscopy (SEM) and X-ray diffraction (XRD). Photocatalytic performance was evaluated by decomposing an aqueous solution of methylene blue. Results showed that the anatase content in TiO2 coating was augmented to 19.9% from 4%, and the time constant of the activity was increased to 0.0046 h−1 from 0.0017 h−1.https://www.mdpi.com/2079-6412/7/10/169photocatalytic coatingssolidificationplasma sprayingTiO2microstructure
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Kui Wen Min Liu Xuezhang Liu Chunming Deng Kesong Zhou
spellingShingle	Kui Wen Min Liu Xuezhang Liu Chunming Deng Kesong Zhou Deposition of Photocatalytic TiO2 Coating by Modifying the Solidification Pathway in Plasma Spraying Coatings photocatalytic coatings solidification plasma spraying TiO2 microstructure
author_facet	Kui Wen Min Liu Xuezhang Liu Chunming Deng Kesong Zhou
author_sort	Kui Wen
title	Deposition of Photocatalytic TiO2 Coating by Modifying the Solidification Pathway in Plasma Spraying
title_short	Deposition of Photocatalytic TiO2 Coating by Modifying the Solidification Pathway in Plasma Spraying
title_full	Deposition of Photocatalytic TiO2 Coating by Modifying the Solidification Pathway in Plasma Spraying
title_fullStr	Deposition of Photocatalytic TiO2 Coating by Modifying the Solidification Pathway in Plasma Spraying
title_full_unstemmed	Deposition of Photocatalytic TiO2 Coating by Modifying the Solidification Pathway in Plasma Spraying
title_sort	deposition of photocatalytic tio2 coating by modifying the solidification pathway in plasma spraying
publisher	MDPI AG
series	Coatings
issn	2079-6412
publishDate	2017-10-01
description	The deposition of photocatalytic TiO2 coatings with plasma spraying is attractive for large-scale applications due to its low cost and simplicity, but it is still a challenge to obtain a TiO2 coating with high anatase content. The solidification pathway of inflight melted particles was investigated in the present paper, and TiO2 coatings with enhanced photocatalytic activity were obtained without a significant loss of the microhardness. The coating microstructure, phase composition, and crystallite size were investigated by scanning electron microscopy (SEM) and X-ray diffraction (XRD). Photocatalytic performance was evaluated by decomposing an aqueous solution of methylene blue. Results showed that the anatase content in TiO2 coating was augmented to 19.9% from 4%, and the time constant of the activity was increased to 0.0046 h−1 from 0.0017 h−1.
topic	photocatalytic coatings solidification plasma spraying TiO2 microstructure
url	https://www.mdpi.com/2079-6412/7/10/169
work_keys_str_mv	AT kuiwen depositionofphotocatalytictio2coatingbymodifyingthesolidificationpathwayinplasmaspraying AT minliu depositionofphotocatalytictio2coatingbymodifyingthesolidificationpathwayinplasmaspraying AT xuezhangliu depositionofphotocatalytictio2coatingbymodifyingthesolidificationpathwayinplasmaspraying AT chunmingdeng depositionofphotocatalytictio2coatingbymodifyingthesolidificationpathwayinplasmaspraying AT kesongzhou depositionofphotocatalytictio2coatingbymodifyingthesolidificationpathwayinplasmaspraying
_version_	1725411042244165632

Deposition of Photocatalytic TiO2 Coating by Modifying the Solidification Pathway in Plasma Spraying

Similar Items