多效TiO_(2)/3DG复合材料对四环素废水的处理  

Multi-effect TiO_(2)/3DG Composite Material for Treatment of Tetracycline Wastewater

作　　者：杨扬 刘畅 王剑 YANG Yang;LIU Chang;WANG Jian(Institute of Seawater Desalination and Multipurpose Utilization,MNR(Tianjin),300192;Tianjin Institute of Drug Control,300070,Tianjin,China)

机构地区：[1]自然资源部天津海水淡化与综合利用研究所,300192 [2]天津市药品检验研究院,天津300070

出　　处：《水处理技术》2024年第1期72-75,共4页Technology of Water Treatment

基　　金：国家自然科学基金青年基金项目(51902360);中央级公益性科研院所基本科研业务费专项资金(Y-JBYWF-2019-15)。

摘　　要：实验以钛酸四丁酯、氧化石墨烯为主要原料,采用溶剂热法制备TiO_(2)/3DG复合材料,以四环素为目标降解污染物。用扫描电子显微镜(SEM)、紫外-可见-近红外光谱(UV-Vis-NIR)、X射线衍射光谱(XRD)对复合物进行表征。结果显示,TiO_(2)均匀地负载在GO表面,并在整个波段具有很好的光吸收性能。研究了TiO_(2)-3DG通过吸附、光热转换和光催化方式对四环素的处理情况。结果表明,复合材料具有多效处理能力,具有吸附、光热转换和光催化的多重效果。对于四环素,单位质量吸附量为100.9 mg/g,光热转换效率为87.5%,2 h脱除率为94.7%。The nanocomposite TiO_(2)/3DG of TiO_(2)nanoparticles and three-dimensional graphene was fabricated by solvothermal method using tetrabutyl titanate and graphene oxide.The nanocomposite was used to treat tetracycline wastewater.The samples were characterized by scanning electron microscopy(SEM),UV-visible-NIR spectral analysis and X-ray diffraction spectroscopy.The results showed that TiO_(2)nanoparticles were deposited on the graphene sheet uniformly and TiO_(2)/3DG had an excellent light adsorption ability.The composite exhibits a multifunctional effect on the wastewater treatment,including adsorption,solar-thermal conversion and photocatalysis.For tetracycline,the adsorption capacity is 100.9 mg/g.The solar-thermal conversion is 87.5%under 5 kW/m^(2) illumination.The TiO_(2)/3DG can degrade over 94.7%tetracycline wastewater by 2 h under 5 kW/m^(2).

关 键 词：氧化石墨烯 TiO_(2) 吸附 催化 光热转换 

分 类 号：TQ424[化学工程] O643.3[理学—物理化学] X703.1[理学—化学]