Journal
CATALYSTS
Volume 6, Issue 8, Pages -Publisher
MDPI
DOI: 10.3390/catal6080117
Keywords
TiO2; MWCNT; carbon doped; nanoparticles; mesoporous; catalysts; photocatalyst; photocatalysis
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Funding
- Xi 1 an Jiaotong University through a Grant for establishment of Center of Nanomaterials for Renewable Energy
- China National Science Foundation [51201175, 21371070]
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Highly crystallized C-doped mesoporous anatase TiO2 is prepared using a multi-walled carbon nanotube (MWCNT) mat as both a rigid pore template and a carbon doping source. SEM and TEM characterization shows that the MWCNT template imposed a pore structure in reverse of that of the MWCNT mat. The pore walls are formed by chain-like interconnected TiO2 nanocrystals with an average diameter about 10 nm, and pores are derived from spaces occupied by MWCNTs before removal. XRD characterization shows that TiO2 is crystallized with a pure anatase phase. XPS characterization reveals that the relative carbon content in the TiO2 is related to the duration of TiO2/MWCNT composite annealing before removal of MWCNT template. Three plateau of adsorption from 450-800 nm in UV-Vis spectra in comparison to that of P25; and display visible light photocatalytic activity for decomposition of methyl orange (MO) in relationship with the carbon content and crystallinity of the anatase TiO2.
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