微晶纤维素辅助制备C-TiO2复合材料及其对Cd2+的吸附性能  

Preparation of C-TiO2 composite with assistance of microcrystalline cellulose and its adsorption properties for Cd2+

作　　者：王瑞佳 聂敬恒 樊源源 李楠 闫兴磊 商旭婷 张继国 潘清江[1] 郭元茹[1] WANG Ruijia;NIE Jingheng;FAN Yuanyuan;LI Nan;YAN Xinglei;SHANG Xuting;ZHANG Jiguo;PAN Qingjiang;GUO Yuanru(Key Laboratory of Bio-Based Material Science Technology,Material Science and Engineering College,Northeast Forestry University,Harbin 150040,China)

机构地区：[1]东北林业大学材料科学与工程学院生物质材料科学与技术教育部重点实验室

出　　处：《复合材料学报》2020年第2期415-421,共7页Acta Materiae Compositae Sinica

基　　金：黑龙江省自然科学基金(C2018006);东北林业大学大学生创新项目(201810225016)

摘　　要：采用溶胶-凝胶法,利用微晶纤维素(CMC)辅助制备了C-TiO2复合材料,并对其进行了结构、组成和形貌的分析。XRD分析结果表明,所制备的C-TiO2复合材料样品为具有较高的结晶度的锐钛矿相TiO2和石墨碳的复合材料;SEM、 TEM和XPS分析表明, CMC在C-TiO2复合材料的制备中起到双重作用:既是复合材料中C的前驱体,同时会增大所制备的TiO2的分散程度。同时,利用Cd2+考察了C-TiO2复合材料样品对重金属离子的吸附能力。实验表明,与未添加CMC的TiO2相比,所制备的C-TiO2复合材料对重金属离子具有很好的吸附性能,吸附量达到37.15 mg·g-1,是未添加CMC的平衡吸附量(17.32 mg·g-1)的214.5%。C-TiO2优异的吸附性能将使其在Cd2+的污水处理上具有很好的应用前景。C-TiO2 composites were successfully prepared via sol-gel method with assistance of microcrystalline cellulose(CMC). The structure, components and morphology of C-TiO2 composites have been fully studied. The results of XRD show that: C-TiO2 composite has the structure of anatase with high crystallinity;the analyses of SEM, TEM and XPS give the evidence that cellulose has dual effects on the preparation of the C-TiO2 composite: it is the precursor of carbon, and it also works as dispersant which makes TiO2 well dispersive. The adsorption experiments of Cd2+ has been carried out to evaluate the adsorption property by the C-TiO2 composite. Compared with the TiO2 prepared without cellulose, C-TiO2 composite has high adsorption. The adsorption amount of Cd2+ reaches 37.15 mg·g-1, which is 214.5% as higher as that without cellulose. At the same time, C-TiO2 composite has excellent adsorption efficiency, which makes C-TiO2 a good candidate for water treatment.

关 键 词：微晶纤维素 碳(C) TIO2 镉离子 吸附 

分 类 号：TB332[一般工业技术—材料科学与工程]