Formation of titania photocatalyst films by microarc oxidation of Ti and Ti-6Al-4V alloys

Young Keun Shin; Won Seok Chae; Yong Won Song; Yun Mo Sung

doi:10.1016/j.elecom.2006.01.003

Formation of titania photocatalyst films by microarc oxidation of Ti and Ti-6Al-4V alloys

Young Keun Shin, Won Seok Chae, Yong Won Song, Yun Mo Sung

Research output: Contribution to journal › Article › peer-review

86 Citations (Scopus)

Abstract

Microarc oxidation (MAO) was performed for pure Ti and Ti-6Al-4V alloys, respectively to evolve porous titanium oxide (TiO₂:titania) films at their surfaces. X-ray diffraction (XRD) analysis results reveal that TiO ₂ films formed on pure Ti and Ti-6Al-4V alloys have high content of anatase with small content of rutile phases, which would be ideal for high-performance photocatalytic properties. The rutile content was gradually increasing with MAO time period for Ti alloys, while that was almost constant value of 10 vol% for pure Ti. Scanning electron microscopy (SEM) images of the films show uniformly distributed pores for both pure Ti and Ti-6Al-4V alloys. The pore density was higher for pure Ti from 10 min MAO and the pore size became larger for Ti-6Al-4V alloys after 40 min MAO. Microarc oxidized pure Ti showed relatively higher photodecomposition efficiency compared to Ti-6Al-4V alloys, possibly due to the large surface area coming from high porosity and optimum composition of anatase and rutile phases.

Original language	English
Pages (from-to)	465-470
Number of pages	6
Journal	Electrochemistry Communications
Volume	8
Issue number	3
DOIs	https://doi.org/10.1016/j.elecom.2006.01.003
Publication status	Published - 2006 Mar

Bibliographical note

Funding Information:
This study was supported by Korea Institute of Industrial Technology Evaluation and Planning (ITEP) through the international collaborative research and development program in 2004–2005.

Keywords

Microarc oxidation
Phase transformation
Photocatalyst
Titania
Titanium

ASJC Scopus subject areas

Electrochemistry

Access to Document

10.1016/j.elecom.2006.01.003

Cite this

@article{a7390fb307a844eda158a3e190289315,

title = "Formation of titania photocatalyst films by microarc oxidation of Ti and Ti-6Al-4V alloys",

abstract = "Microarc oxidation (MAO) was performed for pure Ti and Ti-6Al-4V alloys, respectively to evolve porous titanium oxide (TiO2:titania) films at their surfaces. X-ray diffraction (XRD) analysis results reveal that TiO 2 films formed on pure Ti and Ti-6Al-4V alloys have high content of anatase with small content of rutile phases, which would be ideal for high-performance photocatalytic properties. The rutile content was gradually increasing with MAO time period for Ti alloys, while that was almost constant value of 10 vol% for pure Ti. Scanning electron microscopy (SEM) images of the films show uniformly distributed pores for both pure Ti and Ti-6Al-4V alloys. The pore density was higher for pure Ti from 10 min MAO and the pore size became larger for Ti-6Al-4V alloys after 40 min MAO. Microarc oxidized pure Ti showed relatively higher photodecomposition efficiency compared to Ti-6Al-4V alloys, possibly due to the large surface area coming from high porosity and optimum composition of anatase and rutile phases.",

keywords = "Microarc oxidation, Phase transformation, Photocatalyst, Titania, Titanium",

author = "Shin, {Young Keun} and Chae, {Won Seok} and Song, {Yong Won} and Sung, {Yun Mo}",

note = "Funding Information: This study was supported by Korea Institute of Industrial Technology Evaluation and Planning (ITEP) through the international collaborative research and development program in 2004–2005.",

year = "2006",

month = mar,

doi = "10.1016/j.elecom.2006.01.003",

language = "English",

volume = "8",

pages = "465--470",

journal = "Electrochemistry Communications",

issn = "1388-2481",

publisher = "Elsevier Inc.",

number = "3",

}

TY - JOUR

T1 - Formation of titania photocatalyst films by microarc oxidation of Ti and Ti-6Al-4V alloys

AU - Shin, Young Keun

AU - Chae, Won Seok

AU - Song, Yong Won

AU - Sung, Yun Mo

N1 - Funding Information: This study was supported by Korea Institute of Industrial Technology Evaluation and Planning (ITEP) through the international collaborative research and development program in 2004–2005.

PY - 2006/3

Y1 - 2006/3

N2 - Microarc oxidation (MAO) was performed for pure Ti and Ti-6Al-4V alloys, respectively to evolve porous titanium oxide (TiO2:titania) films at their surfaces. X-ray diffraction (XRD) analysis results reveal that TiO 2 films formed on pure Ti and Ti-6Al-4V alloys have high content of anatase with small content of rutile phases, which would be ideal for high-performance photocatalytic properties. The rutile content was gradually increasing with MAO time period for Ti alloys, while that was almost constant value of 10 vol% for pure Ti. Scanning electron microscopy (SEM) images of the films show uniformly distributed pores for both pure Ti and Ti-6Al-4V alloys. The pore density was higher for pure Ti from 10 min MAO and the pore size became larger for Ti-6Al-4V alloys after 40 min MAO. Microarc oxidized pure Ti showed relatively higher photodecomposition efficiency compared to Ti-6Al-4V alloys, possibly due to the large surface area coming from high porosity and optimum composition of anatase and rutile phases.

AB - Microarc oxidation (MAO) was performed for pure Ti and Ti-6Al-4V alloys, respectively to evolve porous titanium oxide (TiO2:titania) films at their surfaces. X-ray diffraction (XRD) analysis results reveal that TiO 2 films formed on pure Ti and Ti-6Al-4V alloys have high content of anatase with small content of rutile phases, which would be ideal for high-performance photocatalytic properties. The rutile content was gradually increasing with MAO time period for Ti alloys, while that was almost constant value of 10 vol% for pure Ti. Scanning electron microscopy (SEM) images of the films show uniformly distributed pores for both pure Ti and Ti-6Al-4V alloys. The pore density was higher for pure Ti from 10 min MAO and the pore size became larger for Ti-6Al-4V alloys after 40 min MAO. Microarc oxidized pure Ti showed relatively higher photodecomposition efficiency compared to Ti-6Al-4V alloys, possibly due to the large surface area coming from high porosity and optimum composition of anatase and rutile phases.

KW - Microarc oxidation

KW - Phase transformation

KW - Photocatalyst

KW - Titania

KW - Titanium

UR - http://www.scopus.com/inward/record.url?scp=33344471342&partnerID=8YFLogxK

U2 - 10.1016/j.elecom.2006.01.003

DO - 10.1016/j.elecom.2006.01.003

M3 - Article

AN - SCOPUS:33344471342

SN - 1388-2481

VL - 8

SP - 465

EP - 470

JO - Electrochemistry Communications

JF - Electrochemistry Communications

IS - 3

ER -

Formation of titania photocatalyst films by microarc oxidation of Ti and Ti-6Al-4V alloys

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this