Boron-doped TiO₂ was supported on HZSM-5 zeolite in a sol-gel route to prepare B-TiO₂(x%)/HZSM-5 composites. The composites are composed of anatase TiO₂ and HZSM-5 zeolite. The crystallite size of anatase TiO₂ decreases after loading B-TiO₂ on HZSM-5 zeolite. The SEM and TEM images of the composite show the dispersion of the B-TiO₂ crystals on the external surface of HZSM-5. The bandgap energies of B-TiO₂(x%)/HZSM-5 composites are approximately 3.2 eV. The N₂ adsorption-desorption isotherms indicate that B-TiO₂ is a mesoporous material and HZSM-5 zeolite is a microporous material. The mesoporous B-TiO₂ layer is loaded on the external surface of the zeolite and does not enter into the inner micropores. The XPS results indicate the unchanged chemical environments of both titanium and oxygen in the supported B-TiO₂. The B-TiO₂(x%)/HZSM-5 composites have higher photocatalytic activity than the unsupported B-TiO₂. The optimum B-TiO₂ loading content is 20% in the composite, and 55.3% of the original ofloxacin molecules were degraded on the sample after 30 min of irradiation. Photocatalytic oxidation not only causes breaking up of the ofloxacin molecules, but also leads to decomposition of the major functional groups of the ofloxacin molecules.

将硼掺杂的TiO ₂以溶胶-凝胶方式负载在HZSM-5沸石上以制备B-TiO ₂（x％）/ HZSM-5复合材料。该复合材料由锐钛矿型TiO ₂和HZSM-5沸石组成。将B-TiO ₂负载在HZSM-5沸石上后，锐钛矿型TiO ₂的晶粒尺寸减小。复合材料的SEM和TEM图像显示B-TiO ₂晶体分散在HZSM-5的外表面上。B-TiO ₂（x％）/ HZSM-5复合材料的带隙能约为3.2 eV。N ₂吸附-解吸等温线表明B-TiO ₂HZSM-5沸石是中孔材料，HZSM-5沸石是微孔材料。介孔B-TiO ₂层负载在沸石的外表面上，并且不进入内部微孔。XPS结果表明在负载的B-TiO _2中钛和氧的化学环境未改变。B-TiO ₂（x％）/ HZSM-5复合材料比未负载的B-TiO ₂具有更高的光催化活性。最佳的B-TiO ₂复合材料中的载药量为20％，辐照30分钟后，样品中的氧氟沙星分子的原始降解率为55.3％。光催化氧化不仅导致氧氟沙星分子的分解，而且导致氧氟沙星分子的主要官能团的分解。