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dc.contributor.authorZhu, H
dc.contributor.authorShang, Y
dc.contributor.authorJing, Y
dc.contributor.authorLiu, Y
dc.contributor.authorLiu, Y
dc.contributor.authorEl-Toni, AM
dc.contributor.authorZhang, F
dc.contributor.authorZhao, D
dc.description.abstractExploring facile and reproducible methods to prepare mesoporous TiO2 nanospheres is crucial for improving the performance of TiO2 materials for energy conversion and storage. Herein, we report a simple and reproducible double-surfactant assembly-directed method to prepare monodisperse mesoporous TiO2 nanospheres. A double-surfactant system of n-dodecylamine (DDA) and Pluronic F127 was adopted to control the hydrolysis and condensation rates of tetrabutyl titanate in a mixture of water and alcohol at room temperature. In this process, the diameter size of mesoporous TiO2 nanospheres can be simply tuned from ∼50 to 250 nm by varying the concentration of H2O and surfactants. The double-surfactant system of DDA and F127 plays an effective role in determining the size, morphology, and monodispersity of mesoporous TiO2 nanospheres to reduce agglomeration during the sol-gel process. The resultant mesoporous anatase TiO2 nanospheres after solvothermal treatment at 160 °C are built of interpenetrating nanocrystals with a size of ∼10 nm, which are arranged to obtain a large number of connecting mesopores. Mesoporous TiO2 nanospheres with a small diameter size of around 50 nm possess a high surface area (∼160 m2/g) and mesopores with sizes of 4-30 nm. The small diameter size, high crystallinity, and mesoporous structure of TiO2 nanospheres lead to excellent performance in cycling stability and rate capability for lithium-ion batteries. After 500 cycles, the monodisperse mesoporous TiO2 nanospheres exhibit a charge capacity as high as 156 mAhg-1 without obvious fade, and the Coulombic efficiency can reach up to 100%.
dc.publisherAmerican Chemical Society (ACS)
dc.relation.ispartofjournalACS Applied Materials and Interfaces
dc.subject.fieldofresearchChemical Sciences
dc.titleSynthesis of Monodisperse Mesoporous TiO2 Nanospheres from a Simple Double-Surfactant Assembly-Directed Method for Lithium Storage
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationZhu, H; Shang, Y; Jing, Y; Liu, Y; Liu, Y; El-Toni, AM; Zhang, F; Zhao, D, Synthesis of Monodisperse Mesoporous TiO2 Nanospheres from a Simple Double-Surfactant Assembly-Directed Method for Lithium Storage, ACS Applied Materials and Interfaces, 2016, 8 (38), pp. 25586-25594
gro.hasfulltextNo Full Text
gro.griffith.authorZhao, Dongyuan

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