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Formation of TiO2 Hollow Nanoparticles via Gas Phase Synthesis using Titanium Oxide Acetylacetonate as a Precursor

Title
Formation of TiO2 Hollow Nanoparticles via Gas Phase Synthesis using Titanium Oxide Acetylacetonate as a Precursor
Author
이재성
Keywords
TiO2 nanoparticles; hollow structure; chemical vapor condensation; gas phase synthesis; metal acetylacetonates
Issue Date
2006-12
Publisher
CERAMIC SOC JAPAN-NIPPON SERAMIKKUSU KYOKAI
Citation
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, v. 114, No. 1335, Page. 923-928
Abstract
TiO2 nanoparticles were synthesized by chemical vapor condensation (CVC) using titanium oxide acetylacetonate as a precursor in the temperature range of 800-1000 degrees C. TEM observation revealed that TiO2 nanoparticles 10-40 nm in diameter consisted of a hollow structure with shells 4-5 nm in thickness. From XRD results, it was found that TiO2 nanopowders obtained at all temperatures consisted of a two-phase rutile and anatase mixture. The sequential decomposition of the metal acetylacetonate precursor observed in thermogravimetry (TG) analysis showed that formation of the hollow structure depends on the characteristics of the metalorganic precursor. In addition, it was found that the transmittance of TiO2 hollow nanoparticles is lower than that of commercial nanopowders in the wavelength range of 400-800 nm by UV-visible spectrophotometry. However, the band gap energy of the TiO2 hollow nanoparticies at about 3.0 eV is unchanged from other forms of TiO2.
URI
https://www.jstage.jst.go.jp/article/jcersj/114/1335/114_1335_923/_article/-char/ja/https://repository.hanyang.ac.kr/handle/20.500.11754/110010
ISSN
1882-0743; 1348-6535
DOI
10.2109/jcersj.114.923
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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