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首页> 外文期刊>Journal of industrial and engineering chemistry >Preparation of amino-functionalized silica for copper removal from an aqueous solution
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Preparation of amino-functionalized silica for copper removal from an aqueous solution

机译:用于从水溶液中去除铜的氨基官能化二氧化硅的制备

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摘要

In the present research, amino-functionalized silica materials were synthesized to develop absorbents for removing copper (II) ions from water. Three kinds of silica with various BET surface areas and pore volumes (331.4 m~2/g, 460.1 m~2/g, 717.7 m~2/g and 1.38 cm~3/g, 1.06 cm~3/g, 0.57 cm~3/g, respectively) were used to determine an optimum material. 3-Aminopropyltrimethoxysilane (3-APTMS) and N-[3-(trimethoxysilyl)propyl]-ethylenediamine (MSDA) are two amino-functional moieties grafted onto silica surfaces. A maximum copper absorption of 33.45 mg/g was confirmed using the amino-functionalized material at an initial 3-APTMS concentration of 2.52 mmol/g. Silica with a BET surface of 331 m~2/g and a pore volume of 1.38 cm~3/g demonstrated a good copper absorption capacity. Interference species such as pH, NH3 and EDTA were also studied in this work.
机译:在本研究中,合成了氨基官能化的二氧化硅材料以开发用于从水中去除铜(II)离子的吸收剂。三种具有不同BET表面积和孔体积的二氧化硅(331.4 m〜2 / g,460.1 m〜2 / g,717.7 m〜2 / g和1.38 cm〜3 / g,1.06 cm〜3 / g,0.57 cm分别使用〜3 / g)来确定最佳材料。 3-氨基丙基三甲氧基硅烷(3-APTMS)和N- [3-(三甲氧基甲硅烷基)丙基]-乙二胺(MSDA)是接枝到二氧化硅表面的两个氨基官能团。使用氨基官能化材料在3-APTMS初始浓度为2.52 mmol / g时,最大铜吸收量为33.45 mg / g。 BET表面为331 m〜2 / g且孔容为1.38 cm〜3 / g的二氧化硅具有良好的铜吸收能力。在这项工作中还研究了诸如pH,NH3和EDTA等干扰物质。

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