Preparation of Nanosized TiO2 Powder from Spent Titanium Chip by Sol-Gel Method

被引：3

作者：

Lee, Hwan-Gyu ^{[1
]}

Ahn, Won-Ju ^{[1
]}

Kim, Seong-Kyung ^{[1
]}

Kang, Byeong-Mo ^{[2
]}

Jeong, Woon-Jo ^{[2
]}

Chung, Min-Chu ^{[1
]}

Ahn, Ho-Geun ^{[1
]}

机构：

[1] Sunchon Natl Univ, Dept Chem Engn, Sunchon 540742, Jeonnam, South Korea

[2] OT&T INC, Kwangju 500706, South Korea

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2015年 / 15卷 / 07期

基金：

新加坡国家研究基金会;

关键词：

Spent Titanium Chip; Sol-Gel Method; Neutralization; Photocatalyst; Methylene Blue; METHYLENE-BLUE;

D O I：

10.1166/jnn.2015.10415

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The TiO2 powder was prepared from the spent titanium chips by applying the sol gel method with neutralization by NaOH solution. The prepared TiO2 powder was characterized using a particle size analysis, BET surface area, and XRD analysis. The crystal structure of the TiO2 powder was rutile type, and the powder was obtained to be nanosized. BET surface area of TiO2 powder was 118 m(2)/g, average particle size was 266.5 nnn. The photocatalytic property of the TiO2 powder was evaluated as decomposition rate of methylene blue (MB) by using a liquid phase stirred reactor. Decomposition rate on TiO2 powder (P-25) was 1.5 times higher than that of the prepared TiO2 powder. Decomposition rate on the prepared TiO2 powder was linearly increased with increasing the amount of TiO2 powder, and approached to a specific value. MB concentration and decomposition rate was not correlated within the experimental range. The maximum value of decomposition rate at about pH 8 was 62%.

引用

页码：5466 / 5470

页数：5

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