UiO-66及UiO-66/再生纤维素复合膜的制备与吸附降解研究  

Preparation and Study Adsorption-Photocatalytic Degradation Property of UiO-66 and UiO-66/Regenerated Cellulose Composite Membrane

作　　者：吴文炳[1,2] WU Wenbing(College of Chemistry and Environment, Minnan Normal University, Zhangzhou, Fujian 363000, China;School of Chemical Engineering, Fuzhou University, Fuzhou, Fujian 350116, China)

机构地区：[1]闽南师范大学化学与环境学院,福建漳州363000 [2]福州大学石油化工学院,福建福州350116

出　　处：《闽南师范大学学报（自然科学版）》2017年第4期59-65,共7页Journal of Minnan Normal University：Natural Science

基　　金：国家自然科学基金(21676133);福建省自然科学基金(2014J01204)

摘　　要：在溶剂热条件下合成具有吸附和光催化性能的UiO-66,并通过原位生长法在再生纤维素膜上直接合成UiO-66,制备UiO-66/再生纤维素复合膜.本文重点研究了UiO-66及其复合膜对亚甲基蓝的吸附-降解性能.研究结果表明:UiO-66晶粒尺寸约为250 nm,在400℃以下和p H=1~11范围内具有良好的水热稳定性,在350 nm下具有光催化活性.当处理温度超过500℃时,UiO-66结构受破坏,形成新物相Zr O2,光催化能力急剧下降.在亚甲基蓝的吸附-降解实验研究中,UiO-66粉末的吸附率可达到91%,降解率达到80%以上,而UiO-66/再生纤维素膜经4次再生回用后仍保持在首次降解率的82.9%,再生能力好.UiO-66/regenerated cellulose composite membrane was prepared by in-situ synthesis,and UiO-66with a good adsorption and photocatalytic property was formed directly onto the surface of regenerated cellulose membrane by solvothermal method.The adsorption-photocatalytic degradation behavior of UiO-66and UiO-66/regenerated cellulose composite membrane for methylene blue were also investigated.The results show that the grain size of UiO-66sample is about250nm,and UiO-66exhibits a good hydrothermal stability below400℃and between the pH range from1to11.The photocatalytic degradation ability of UiO-66sharp decreased attributed to a new phase ZrO2generated above500℃.In the experiment of adsorption-photocatalytic degradation for methylene blue,the adsorption rate and degradation rate of UiO-66powder were over91%and81%,respectively.Moreover,the regenerated UiO-66/regeneratd cellulose remained82.9%of the initial degradation rate for methylene blue after four adsorption/degradation/desorption cycles.

关 键 词：UiO-66 再生纤维素膜 吸附 降解 

分 类 号：TB333[一般工业技术—材料科学与工程]