Journal
MATERIALS RESEARCH BULLETIN
Volume 47, Issue 4, Pages 1040-1044Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2011.12.054
Keywords
Nanomaterial; Manganese; Chemical vapor condensation; Impregnation method; Catalytic properties
Categories
Funding
- Ministry of Environment [192-091-001]
- Ministry of Education, Science and Technology [2011K000750]
- Korea Environmental Industry & Technology Institute (KEITI) [ARQ2009190021004] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2010-50236] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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TiO2 nanomaterials were synthesized by a chemical vapor condensation and loaded with 2-10 wt% manganese by impregnation. Thermally treated particles were characterized by XRD and EXAFS. Particles with 5 wt% Mn content showed the most dispersed Mn components in the supported TiO2 with the lowest crystallinity. BET and HR-TEM showed that their surface area and pore volume increased to 299.5 m(2) g(-1) and 0.329 cm(3) g(-1), respectively. TPR and XPS showed these particles to have higher oxygen mobility and redox properties than commercial P25 similarly prepared and loaded with 5 wt% Mn2O3. They also had greater amounts of Mn3+ groups on their surfaces. 5 wt% manganese loaded TiO2 particles fabricated by CVC and impregnation are expected to have broad applicability. (C) 2012 Elsevier Ltd. All rights reserved.
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