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Seok, Sang Il
Laboratory for Energy Harvesting Materials and Systems (LEHMS)
Research Interests
  • Solar energy conversion, perovskite solar cells, inorganic-organic hybrid materials and processing, solution chemistry

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중성 수용액상에서 titania 졸 생성

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Title
중성 수용액상에서 titania 졸 생성
Other Titles
The Formation of Titania Sol in a Neutral Aquatic Solution
Author
Seok, Sang IlKim, Mi SunSuh, Tae SooKwak, Chung HeopKim, Hyo Joong
Issue Date
1999-01
Publisher
한국세라믹학회
Citation
한국세라믹학회지, v.36, no.11, pp.1178 - 1182
Abstract
The TiO2 sol formation was monitored by measuring the variation of sol viscosity and particle diameter in the temperature range of 80-120 for 2-30h. The starting solution for sol was prepared by mixing the gel which can be produced by the reaction of TiOCl2 and NH4OH solution and hydrogen peroxide solution. The pH value of the resulting solution was 2,4 and slowly increased with time and then neutralized after 40h. It was deduced that TiO2 sol in neutral aqueous solution was formed by the transformation of TiO(OH)(OOH) cluster into TiO2 sol and stabilized by peroxo group existing at surface of TiO2 sol. Average particle diameter of the TiO2 sols aged above 90 was 25nm and remained unchanged with time. The crystal structure of sol particles was anatase form
URI
https://scholarworks.unist.ac.kr/handle/201301/18709
URL
http://www.koreascience.or.kr/article/ArticleFullRecord.jsp?cn=SRMHB8_1999_v36n11_1178
ISSN
1229-7801
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