Corona‐assisted flame synthesis of ultrafine titania particles
作者:
Srinivas Vemury,
Sotiris E. Pratsinis,
期刊:
Applied Physics Letters
(AIP Available online 1995)
卷期:
Volume 66,
issue 24
页码: 3275-3277
ISSN:0003-6951
年代: 1995
DOI:10.1063/1.113402
出版商: AIP
数据来源: AIP
摘要:
Synthesis of ultrafine titania particles is investigated in a diffusion flame aerosol reactor in the presence of a gaseous electric discharge (corona) created by two needle electrodes. The corona wind flattens the flame and reduces the particle residence time at high temperatures, resulting in smaller primary particle sizes and lower level of crystallinity. Increasing the applied potential from 5 to 8 kV reduces the particle size from 50 to 25 nm and the rutile content from 20 to 8 wt %. Coronas provide a clean and simple technique that facilitates gas phase synthesis of nanosized materials with controlled size and crystallinity. ©1995 American Institute of Physics.
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