Synthesis of Nano-sized TiO2 Powder using a Hydrothermal Process

被引：12

作者：

Kim, Gang Hyuk ^{[1
]}

Lee, Woo Jin ^{[1
]}

Kim, Donggyu ^{[1
]}

Lee, Sung Keun ^{[1
]}

Lee, Sang Hwa ^{[1
]}

Kim, Insoo ^{[1
]}

机构：

[1] Dong A Univ, Dept Met Engn, Pusan 604714, South Korea

来源：

KOREAN JOURNAL OF METALS AND MATERIALS | 2010年 / 48卷 / 06期

关键词：

nanostructured materials; chemical synthesis; crystallization; X-ray diffraction; TiO2 hydrothermal synthesis; ANATASE TIO2; PHOTOCATALYTIC ACTIVITY; NANOCRYSTALLINE TIO2; SURFACE-AREA; NANOPARTICLES; TEMPERATURE; TITANIA; SENSORS;

D O I：

10.3365/KJMM.2010.48.06.543

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper investigated the synthesis conditions of nano-sized TiO2 powder in a hydrothermal process at a temperature range of 100 similar to 180 degrees C considering the precipitation agent, precipitation pH, reaction temperature and time. Titanium hydroxide formed by NH4OH exhibited a lower crystallization temperature than that by NaOH and formed less aggregated TiO2 particles. As the precipitation pH increased above 8, the shape of the particles changed from spherical to needle form, which appeared to be caused by dissolution and re-precipitation of the titanium hydroxide in an alkali environment.

引用

页码：543 / 550

页数：8

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