To investigate the effect of the doping of alkali metal on the band structure and photocatalytic property of titanium oxide crystals, the mesoporous sodium doped titanium dioxide (Na–TiO₂) micro-nano powder was synthesized by the solid-state reaction (SSR) method, and characterized by X-ray diffraction (XRD), UV–vis diffuse reflectance spectrum (UV–Vis), scanning electron microscopy/energy dispersive spectroscopy, X-ray photoelectron spectroscopy (XPS), N₂ desorption-adsorption. Meanwhile, the UV-degradation properties of Na–TiO₂ and P25–TiO₂ powder materials for hydroquinone (HQ) were studied. The results show that sodium ions with the low charge density entered into the (004) crystal place of anatase TiO₂, producing the dislocation defects of TiO₂ crystal structure. The spherical-like morphology micro-nanopowder with a size of 50–500 nm, sodium content of 3.36(wt%), the bandgap width of 3.08 eV, BET surface area of 111.52 m²/g, the pore size distribution center of 4.72 nm, the pore volume of 0.32 cm³/g are obtained, respectively. Within 60min and 25 °C, the UV-degradation rate (97.32%) of mesoporous Na–TiO₂ powders for hydroquinone is 2.62 times for that (37.08%) of P25–TiO₂ powder. It is mainly derived from the increase of dislocation density of Na–TiO₂ powder, and the results of the synergistic photocatalystic degradation of hydroxyl radicals and superoxide radicals. And the photocatalytic efficiency is associated with pH value, photocatalyst dosage, concentration of HQ, irradiation time and stability.

为了研究碱金属的掺杂对二氧化钛晶体的能带结构和光催化性能的影响，采用固态反应（SSR）法合成了介孔钠掺杂的二氧化钛（Na–TiO ₂）微纳米粉。并通过X射线衍射（XRD），紫外可见漫反射光谱（UV-Vis），扫描电子显微镜/能量色散光谱，X射线光电子能谱（XPS）和N ₂解吸-吸附来表征。同时，研究了Na-TiO ₂和P25-TiO ₂粉末材料对苯二酚（HQ）的紫外降解性能。结果表明，电荷密度低的钠离子进入锐钛矿型TiO ₂的（004）晶体位，产生TiO ₂晶体结构的位错缺陷。球形微纳米粉，尺寸为50–500 nm，钠含量为3.36（wt％），带隙宽度为3.08 eV，BET表面积为111.52 m ² / g，孔径分布中心为4.72在图1b中，获得的孔体积分别为0.32cm ³ / g。在60分钟和25°C的温度下，介孔Na-TiO ₂粉末对苯二酚的UV降解率（97.32％）是P25-TiO ₂粉末的UV降解率（37.08％）的2.62倍。主要是由于Na–TiO ₂的位错密度增加粉末，以及羟基自由基和超氧化物自由基协同光催化降解的结果。而光催化效率与pH值，光催化剂用量，HQ浓度，辐照时间和稳定性有关。