Amino‐Functionalized Multilayer Core–Shell Mesoporous Organosilica Nanospheres for Cr(VI) Removal,Advanced Materials Interfaces

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Amino‐Functionalized Multilayer Core–Shell Mesoporous Organosilica Nanospheres for Cr(VI) Removal
Advanced Materials Interfaces ( IF 4.3 ) Pub Date : 2018-07-03 , DOI: 10.1002/admi.201800630
Xin Lai ₁ , Dan Sun ₂ , Yi Hou ₁ , Yi Zuo ₁ , Yubao Li ₁ , Li Zhang ₁

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Developing low‐cost and highly efficient adsorbents for the removal of toxic heavy metal ions is the subject of intensive research with the increasingly stringent water pollution control standards. In this paper, three types of amino‐functionalized multilayer core–shell mesoporous organosilica nanospheres (MCMONs) are synthesized using an indirect cocondensation method for Cr(VI) removal applications. Results show that amino groups are successfully immobilized on the nanospheres and these amino‐functionalized MCMONs exhibit unique organic–inorganic multilayer core–shell structures. When used as adsorbent for Cr(VI) removal, the N‐(3‐trimethoxysilylpropyl)diethylenetriamine functionalized MCMONs exhibit a maximum adsorption capacity of 279.92 mg g⁻¹ at initial Cr(VI) concentration of 150 mg L⁻¹. This is about 20% greater than the highest Cr(VI) adsorption capacity previously reported for other core–shell silica‐based adsorbents, demonstrating the great potential of MCMONs in Cr(VI) removal applications.

中文翻译：

氨基功能化多层核-壳介孔有机硅纳米球用于去除Cr（VI）

随着日益严格的水污染控制标准，开发低成本，高效的吸附剂以去除有毒的重金属离子成为了深入研究的主题。在本文中，使用间接共缩聚方法去除Cr（VI），合成了三种类型的氨基官能化多层核-壳介孔有机硅纳米球（MCMONs）。结果表明，氨基已成功固定在纳米球上，这些氨基官能化的MCMONs表现出独特的有机-无机多层核-壳结构。当用作吸附剂的Cr（VI）的去除中使用的，N-（3-三甲氧基甲硅烷）二亚乙基三官能MCMONs呈现279.92毫克g的最大吸附容量^-1，在150毫克的L初始的Cr（VI）浓度^-1。这比以前报道的其他基于核壳二氧化硅的吸附剂的最高Cr（VI）吸附能力高约20％，这表明MCMONs在去除Cr（VI）应用中具有巨大潜力。

更新日期：2018-07-03

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