Inorganic Chemistry Laboratory, University of Oxford, Oxford, OX1 3QR, UK.
Nanoscale. 2013 Jun 21;5(12):5396-402. doi: 10.1039/c3nr00344b.
A facile solvent evaporation induced self-assembly (SEISA) strategy was developed to synthesize mesoporous N-doped anatase TiO2 (SE-meso-TON) using a single organic complex precursor derived in situ from titanium butoxide and ethylenediamine in ethanol solution. After the evaporation of ethanol in a fume hood and subsequent calcinations at 450 °C, the obtained N-doped TiO2 (meso-TON) anatase was of finite crystallite size, developed porosity, large surface area (101 m(2) g(-1)) and extended light absorption in the visible region. This SE-meso-TON also showed superior photocatalytic activity to the SG-meso-TON anatase prepared via sol-gel synthesis. On the basis of characterization results from XRD, XPS, N2 adsorption-desorption and ESR, the enhanced visible-light-responsive photocatalytic activity of SE-meso-TON was assigned to its developed mesoporosity and reduced oxygen vacancies.
采用简便的溶剂挥发诱导自组装（SEISA）策略，以钛酸丁酯和乙二胺在乙醇溶液中原位生成的单一有机配合物前体制备了介孔氮掺杂锐钛矿 TiO2（SE-meso-TON）。在通风橱中蒸发乙醇并在 450°C 下煅烧后，所得氮掺杂 TiO2（meso-TON）锐钛矿具有有限的晶粒尺寸、发达的孔结构、较大的比表面积（101 m2 g-1）和可见光区的扩展光吸收。与通过溶胶-凝胶合成制备的 SG-meso-TON 锐钛矿相比，SE-meso-TON 还表现出优异的光催化活性。基于 XRD、XPS、N2 吸附-脱附和 ESR 的表征结果，SE-meso-TON 可见光响应光催化活性的增强归因于其发达的介孔结构和减少的氧空位。
