RGO-TiO_(2)复合材料的制备及光催化降解废水性能研究  

Preparation of RGO-TiO_(2)composite material and its photocatalytic degradation performance in wastewater

作　　者：刘发强 夏培蓓 张新华 黄蕾 吴咏梅 LIU Faqiang;XIA Peibei;ZHANG Xinhua;HUANG Lei;WU Yongmei(College of Chemistry and Environmental Engineering,Xinjiang Institute of Engineering,Urumqi 830091,China)

机构地区：[1]新疆工程学院化学与环境工程学院,乌鲁木齐830091

出　　处：《功能材料》2025年第2期2105-2109,2142,共6页Journal of Functional Materials

基　　金：国家自然科学基金项目(21667029)。

摘　　要：采用水热法制备了RGO-TiO_(2)复合材料,通过XRD、SEM、TEM、FT-IR、Raman及光催化测试等手段对复合材料的性能进行了表征。研究了水热反应温度对复合材料形貌、结构及光催化性能的影响。结果表明,制备的RGO-TiO_(2)复合材料为锐钛矿TiO_(2)结构,水热温度的变化和石墨烯的负载均没有改变复合材料的物相结构,RGO-TiO_(2)复合材料为球状颗粒,颗粒尺寸分布在200~650 nm之间,TiO_(2)负载于RGO的表面,当水热温度为200℃时,复合材料的颗粒最为密实,尺寸均匀性最佳。RGO与TiO_(2)之间存在键合作用,RGO-TiO_(2)复合材料在合成过程中GO被还原成了RGO。以罗丹明B(RhB)溶液为光催化降解对象,随着水热反应温度的提高,复合材料对RhB溶液的降解效率先增大后减小,当水热反应温度为200℃时,复合材料在180 min时的降解效率达到了最大值93.51%。综合可知,最佳水热反应温度为200℃。RGO-TiO_(2)composite materials are prepared by hydrothermal method,and their properties are characterized by XRD,SEM,TEM,FT-IR,Raman,and photocatalytic testing.The effect of hydrothermal reaction temperature on the morphology,structure,and photocatalytic performance of the composite materials is studied.The results show show that the RGO-TiO_(2)composite is anatase TiO_(2)structure,and the phase structure of the composite isn't changed by the change of hydrothermal temperature and the load of grapheme.RGO-TiO_(2)composite material is a spherical particle with particle size distribution between 200 and 650 nm.TiO_(2)loaded on the surface of RGO,and when the hydrothermal temperature is 200℃,the particles of the composite material are the densest and have the best size uniformity.There is a bonding effect between RGO and TiO_(2),and GO is reduced to RGO during the synthesis process of RGO-TiO_(2)composite materials.With Rhodamine B(RhB)solution as the photocatalytic degradation object,the degradation efficiency of composite materials to RhB solution first increases and then decreases with the increase of hydrothermal reaction temperature.When the hydrothermal reaction temperature is 200℃,the degradation efficiency of the composite material reaches the maximum value of 93.51%at 180 min.Overall,the optimal hydrothermal reaction temperature is 200℃.

关 键 词：RGO TiO_(2) 复合材料 光催化降解 罗丹明B 

分 类 号：X703.1[环境科学与工程—环境工程]