Particle and Aerosol Research
Vol. 14, No. 4, December 2018, Pages 145-151
|
ISSN : 1738-8716 (Print)
ISSN : 2287-8130 (Online)
|
Synthesis and Morphology Control of Rod Shaped Potassium Hexatitanate
Chongmin Lee1),2). Hankwon Chang1),2), Hee Dong Jang1),2) *
1)Resources Utilization Research Center, Korea Institute of Geoscience and Mineral Resources
2)Department of Nanomaterials Science and Engineering, University of Science and Technology
*Corresponding author.
Tel.: +82-42-868-3612, E-mail: hdjang@kigam.re.kr
Received 05 December 2018, Revised 20 December 2018, Accepted 22 December 2018, Available online 31 December 2018
http://dx.doi.org/10.11629/jpaar.2018.14.4.145
Abstracts
Rod shaped Potassium hexatitanate (K2Ti6O13) was synthesized from colloidal mixture of TiO2, KOH and graphene oxide (GO) by aerosol spray drying and post heat treatment. Firstly, TiO2-KOH-GO composites were fabricated by aerosol spray drying in argon atmosphere. The composites were then calcined to form a rod shaped morphology of potassium titanate (KTO) in the presence of graphene at 900oC for 3 h in argon atmosphere. Finally, the rod shaped KTO was obtained after removal of graphene (GR) at 800oC and 3 h in air atmosphere. Characterization of the synthesized K2Ti6O13 was carried out using the XRD, BET and FE-SEM. The length and diameter of the synthesized K2Ti6O13 could be controlled by weight fraction of GO in the aerosol precursor. The length of K2Ti6O13 rod increased with decreasing its diameter as GO concentration increased. The aspect ratio of the synthesized K2Ti6O13 rod was controlled from 5 to 13.
Keywords
aerosol spray drying, potassium hexatitanate, nanorods
File
06.³í¹®14±Ç4È£(ÀÌÃѹÎ) PAAR-E-201800028 - ÆíÁý6Â÷.pdf
Download