Organosilane-functionalized graphene oxide hybrid material: Efficient adsorbent for heavy metal ions in drinking water

Phosphorus Sulfur and Silicon and The Related Elements Pub Date : 2021-05-11 DOI:10.1080/10426507.2021.2012676

M. Karabörk, Ban Abdullelah Muhammed, M. Tümer, Serhan Uruş

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引用次数: 5

Abstract

Abstract Organosilane-functionalized and chemically activated graphene-supported Schiff base ligand were synthesized and characterized with XRD, SEM, EDX, TEM, UV–vis, FT-IR, and TG/DTA techniques. Graphene oxide (GO) obtained with the route of Hummer’s method was reacted with 3-(trimethoxysilyl)propylamine, then, the organosilane functionalized and amine-activated-GO was reacted with 3,5-di-tert-butylsalicylaldehyde obtained the hybrid material containing azomethine group on GO surface. The material was used as an adsorbent in order to remove cobalt(II) and zinc(II) ions in drinking water and standard solutions. The adsorption capacity of the material to cobalt(II) and zinc(II) ions were investigated by using batch method. The effect of pH, contact time, temperature, and concentration on the adsorption capacity of the material was also investigated. The enrichment factors were calculated as 441 and 675 for zinc(II) and cobalt(II), respectively. The recovery performance of the material was determined in 98.65–101.75% and 98.55–104.0% range for zinc(II) and cobalt(II) ions, respectively. Graphical Abstract

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有机硅烷功能化氧化石墨烯杂化材料:饮用水中重金属离子的高效吸附剂

摘要合成了有机硅烷功能化和化学活化的石墨烯负载希夫碱配体，并用XRD、SEM、EDX、TEM、UV-vis、FT-IR、TG/DTA等技术对其进行了表征。采用Hummer方法得到的氧化石墨烯(GO)与3-(三甲氧基硅基)丙胺反应，然后将有机硅烷功能化和胺活化的氧化石墨烯与3,5-二叔丁基水杨醛反应，得到表面含有亚甲基的杂化材料。用该材料作为吸附剂去除饮用水和标准溶液中的钴(II)和锌(II)离子。采用间歇法考察了该材料对钴(II)和锌(II)离子的吸附能力。考察了pH、接触时间、温度和浓度对材料吸附能力的影响。锌(II)和钴(II)的富集系数分别为441和675。该材料对锌(II)和钴(II)离子的回收率分别为98.65 ~ 101.75%和98.55 ~ 104.0%。图形抽象

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Phosphorus Sulfur and Silicon and The Related Elements

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