摘要
以明胶、壳聚糖和蔗糖分别作为碳源,柠檬酸镁为MgO模板前驱体,在高温氩气氛下制备了介孔碳吸附剂,用于Cu(Ⅱ)和Pb(Ⅱ)吸附。考察了碳源与柠檬酸镁质量比、煅烧温度对Cu(Ⅱ)和Pb(Ⅱ)离子吸附性能的影响。结果表明,制备介孔碳材料适宜条件为:以明胶为碳源,明胶与柠檬酸镁以质量比5/5混合后,在600℃氩气氛下煅烧2 h。制备的吸附剂孔径约5.1 nm,比表面积达783 m^2/g,对Cu(Ⅱ)和Pb(Ⅱ)的吸附容量分别高达8.3 mg/g和28 mg/g。
Mesoporous carbon adsorbents were prepared for the adsorption of Cu(Ⅱ) and Pb(Ⅱ) by calcination with gelatin,chitosan and sucrose as carbon precursor respectively,and magnesium citrate as MgO template precursor under high temperature argon atmosphere.The effects of the mass ratio of carbon precursor/magnesium citrate and calcination temperature on the adsorption performance of Cu(Ⅱ) and Pb(Ⅱ) ions were investigated.The results showed that the optimum preparation process of adsorbent was obtained as follows:gelatin is carbogen,calcining gelatin and magnesium citrate at a mass ratio of 5/5 under argon atmosphere of 600 ℃ for 2 h,the adsorbent exhibited mesostructure with a pore size of about 5.1 nm and a high specific surface area of 783 m2/g.The as-synthesized adsorbent exhibited high adsorption capacity for Cu(Ⅱ)(8.3 mg/g) and Pb(Ⅱ)(28 mg/g).
作者
张强英
王睿智
刘建
吴金辉
夏露
崔骁
布多
ZHANG Qiang-ying;WANG Rui-zhi;LIU Jian;WU Jin-hui;XIA Lu;CUI Xiao;BU Duo(College of Science,Tibet University,Lhasa 850000,China)
出处
《应用化工》
CAS
CSCD
北大核心
2019年第4期816-819,共4页
Applied Chemical Industry
基金
西藏自治区自然科学基金(XZ2017ZRG-03)
西藏大学高层次人才培育基金(010341)
西藏大学青年科研培育基金(ZDPJZK1702)
西藏大学大学生创新训练项目(2017QCX008)