《Table 1Fractions of{001}/{101}facets in TiO2 nanosheets doped with different lanthanide ions.》

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《利用镧系离子掺杂延长{001}/{101}晶面共暴露的TiO_2纳米片电荷分离态以增强其光催化产氢性能（英文）》

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The microstructures of pure and Yb3+-doped Ti O2nanosheets were compared by TEM（Fig.4）.Both the Ti O2nanosheets show ultrathin thicknesses and weak aggregation（Figs.4 （A）and（B）） .Further investigation，based on the high-resolution TEM（HRTEM）images shown in Fig.4（C）and（D），highlights the co-exposure of{001}and{101}facets in the Ti O2 nanosheets.The distance between the lattice fringes appearing on the side faces of the TiO2 nanosheets is～0.352 nm，corresponding the（101）facets of anatase Ti O2[38].A d-spacing of～0.235 nm can be observed on the top face of the Ti O2 nanosheets，corresponding to the anatase TiO2（001）facets[39].Notably，an obvious lattice distortion is observed on the（101）facets of doped Ti O2 nanosheets（Fig.4 （D）） ，compared to the their pure counterparts.This observation further confirms the selective doping of lanthanide ions into the（101）facets of the TiO2 nanosheets.According to the TEM results，the percentage of exposed（001）facets on the TiO2 nanosheets can be estimated to be～70.99%，which is similar to the corresponding values obtained for the TiO2 nanosheets doped with different types of lanthanide ions（Table 1）.