Zhang Hui, Zhou Liang, Li Jing, Rong Sijia, Jiang Jianping, Liu Shengquan
School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei, China.
Front Chem. 2021 Jan 12;8:593730. doi: 10.3389/fchem.2020.593730. eCollection 2020.
Herein, we report a novel carboxymethyl cellulose (CMC)/MIL-101 (Fe)/poly(β-cyclodextrin) (β-CDP) hydrogel with high photocatalytic activity. β-CDP can significantly enhance the photoactivity of MIL-101(Fe) in the hydrogel prepared by a simple solvothermal method. The structure and property of this composite hydrogel were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. Tetracycline was selected as a model pharmaceutical antibiotic to evaluate the photocatalytic activity of the composite hydrogel under visible light irradiation and darkness, respectively. This composite hydrogel shows excellent activity for degrading pharmaceutical antibiotics under visible light irradiation. The increased photocatalytic activity can be attributed to β-CDP, which acts as a promoter and affords an efficient separation of photogenerated electron-hole pairs of MIL-101(Fe). Moreover, the composite hydrogel is shown to have good water retainability. The hydrogel is inexpensive and shows high photocatalytic activity. Hence, it can be used as an efficient photocatalytic material.
在此，我们报道了一种具有高光催化活性的新型羧甲基纤维素（CMC）/MIL-101（Fe）/聚（β-环糊精）（β-CDP）水凝胶。β-CDP能显著提高通过简单溶剂热法制备的水凝胶中MIL-101（Fe）的光活性。通过傅里叶变换红外光谱、X射线衍射、扫描电子显微镜和透射电子显微镜对这种复合水凝胶的结构和性能进行了表征。分别选择四环素作为模型药物抗生素，以评估复合水凝胶在可见光照射和黑暗条件下的光催化活性。这种复合水凝胶在可见光照射下对降解药物抗生素表现出优异的活性。光催化活性的提高可归因于β-CDP，它作为促进剂，能有效分离MIL-101（Fe）的光生电子-空穴对。此外，复合水凝胶显示出良好的保水性。该水凝胶价格低廉且具有高光催化活性。因此，它可作为一种高效的光催化材料。
