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Article Abstract
Hierarchically dual-mesoporous TiO microspheres have been synthesized by a solvothermal process in the presence of 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIm][BF ]) and diethylenetriamine (DETA) as co-templates. Secondary mesostructured defects in the hierarchical TiO microspheres produce oxygen vacancies, which not only significantly enhance photocatalytic activity in the degradation of methylene blue (1.7 times that with P25) and acetone (2.9 times that with P25), but are also beneficial for lithium storage. Moreover, we propose a mechanism to rationalize the role of this dual mesoporosity of the TiO microspheres in enhancing molecular diffusion, ion transportation, and electronic transitions.
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