Next Article in Journal
Atmospheric Pressure Plasma Coating of Wood and MDF with Polyester Powder
Next Article in Special Issue
Physicochemical and Biological Activity Analysis of Low-Density Polyethylene Substrate Modified by Multi-Layer Coatings Based on DLC Structures, Obtained Using RF CVD Method
Previous Article in Journal
Enhanced Efficiency of Dye-Sensitized Solar Counter Electrodes Consisting of Two-Dimensional Nanostructural Molybdenum Disulfide Nanosheets Supported Pt Nanoparticles
Open AccessArticle

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

1,2, 1,2, 1,2,3,*, 2 and 1,2,*
School of Materials Science and Engineering, Central South University, Changsha 410083, China
National 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, China
School of Materials and Mechanical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China
Authors to whom correspondence should be addressed.
Coatings 2017, 7(10), 169;
Received: 21 September 2017 / Revised: 9 October 2017 / Accepted: 11 October 2017 / Published: 13 October 2017
(This article belongs to the Special Issue Functional Ceramic Coatings)
PDF [4068 KB, uploaded 13 October 2017]


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. View Full-Text
Keywords: photocatalytic coatings; solidification; plasma spraying; TiO2; microstructure photocatalytic coatings; solidification; plasma spraying; TiO2; microstructure

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Wen, K.; Liu, M.; Liu, X.; Deng, C.; Zhou, K. Deposition of Photocatalytic TiO2 Coating by Modifying the Solidification Pathway in Plasma Spraying. Coatings 2017, 7, 169.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Coatings EISSN 2079-6412 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top