Journal
ACS NANO
Volume 5, Issue 1, Pages 590-596Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn102767d
Keywords
hierarchical; ordered macro-mesoporous; TiO2-graphene film; photocatalysis; mass transport; efficient charge separation
Categories
Funding
- National Natural Science Foundation of China [21031005, 20971125, 21006116]
- Beijing Municipal Natural Science Foundation [2082022]
- Foundation for State Key Laboratory of Multiphase Complex Systems and State Key Laboratory of Biochemical Engineering
Ask authors/readers for more resources
Hierarchically ordered macro-mesoporous titania films have been produced through a confinement self assembly method within the regular voids of a colloidal crystal with three-dimensional periodicity. Furthermore, graphene as in excellent electron-accepting and electron transporting material has been incorporated into the hierarchically ordered macro-mesoporous titania frameworks by in situ reduction of graphene oxide added in the self assembly system. Incorporation of interconnected macropores in mesoporous films improves the mass transport through the film reduces the length of the mesopore channel, and increases the accessible surface area of the thin film, whereas the introduction of graphene effectively suppresses the charge recombination. Therefore; the significant enhancement of photocatalytic activity for degrading the methyl blue has been achieved. The apparent rate constants for macro-mesoporous titania films without and with graphene are up to 0.045 and 0.071 min(-1), respectively, almost 11 and 17 times higher than that for Pure mesoporous titania films (0.0041 min(-1)).
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available