A facile synthesis procedure is proposed to prepare homogeneous Zr and Ti co-doped SBA-15 (Zr-Ti-SBA-15) with high specific surface area of 876.0 m2 g− 1. Based on “masking mechanism” from tanning, lactic acid was used as masking agent to obtain the uniform distribution of Zr and Ti species in the SBA-15 framework. The obtained materials were characterized by powder X-ray diffraction (XRD), nitrogen adsorption-desorption isotherms, scanning electron microscope (SEM), transmission electron microscope (TEM) and X-ray photoelectron (XPS). The results reveal that in mesoporous materials, the presence of lactic acid gives rise to the uniform distribution of Zr and Ti species. The adsorption equilibrium and kinetic studies of Zr-Ti-SBA-15 materials show that the adsorption process conforms to the Langmuir isotherm and pseudo-second-order kinetic model, respectively. Regenerational experiments show that the Zr-Ti-SBA-15 displays a significant adsorption ability for methylene blue (MB) (up to 291.6 mg/g), along with good reusability, indicating promising potentials of commercialization. Methodologically, this work provides a wide range of possibilities for further development of SBA-15 based on bimetallic and sewage disposal. Homogenous Zr-Ti-SBA-15 with high specific surface area was successfully by direct synthesis method. The as-prepared Zr-Ti-SBA-15 possessed excellent adsorption capacity and reusability.

中文翻译：

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具有高比表面积的均相Zr和Ti共掺杂SBA-15：制备，表征和应用

提出了一种简便的合成方法，以制备高比表面积为876.0 m2 g-1的均质Zr和Ti共掺杂SBA-15（Zr-Ti-SBA-15）。基于鞣制，乳酸的“掩盖机理”用作掩蔽剂以在SBA-15框架中获得Zr和Ti物种的均匀分布。通过粉末X射线衍射（XRD），氮吸附-解吸等温线，扫描电子显微镜（SEM），透射电子显微镜（TEM）和X射线光电子（XPS）对所得材料进行表征。结果表明，在介孔材料中，乳酸的存在导致Zr和Ti物种的均匀分布。Zr-Ti-SBA-15材料的吸附平衡和动力学研究表明，该吸附过程符合Langmuir等温线和拟二级动力学模型，分别。再生实验表明，Zr-Ti-SBA-15对亚甲基蓝（MB）的吸附能力最高（高达291.6 mg / g），并且具有良好的可重复使用性，表明其商业化潜力很大。从方法上讲，这项工作为基于双金属和污水处理的SBA-15的进一步开发提供了广泛的可能性。直接合成法成功地制备了高比表面积的同质Zr-Ti-SBA-15。所制备的Zr-Ti-SBA-15具有优异的吸附能力和可重复使用性。这项工作为进一步开发基于双金属和污水处理的SBA-15提供了广泛的可能性。直接合成法成功地制备了高比表面积的同质Zr-Ti-SBA-15。所制备的Zr-Ti-SBA-15具有优异的吸附能力和可重复使用性。这项工作为进一步开发基于双金属和污水处理的SBA-15提供了广泛的可能性。直接合成法成功地制备了高比表面积的同质Zr-Ti-SBA-15。所制备的Zr-Ti-SBA-15具有优异的吸附能力和可重复使用性。