4.7 Article

Synthesis of monodisperse mesoporous TiO2 spheres with tunable sizes between 0.6 and 3.1 μm and effects of reaction temperature, Ti source purity, and type of alkylamine on size and monodispersity

Journal

CHEMICAL COMMUNICATIONS
Volume 48, Issue 35, Pages 4250-4252

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c2cc30391d

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Funding

  1. MEST of the Korean Government through the National Research Foundation [NRF-2011-C1AAA001-2011-0030278]
  2. Korea Center for Artificial Photosynthesis (KCAP) in Sogang University

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We report a novel method for synthesizing monodisperse mesoporous TiO2 spheres (sizes = 0.6-3.1 mu m) by hydrolysis of titanium isopropoxide (TIP) in a mixture of C-8-C-16 n-alkylamine, water, and ethanol. The size increases with decreasing temperature, TIP concentration, and water concentration, and upon purifying TIP. n-Dodecylamine gives the highest monodispersity.

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