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Epoxy-Triazinetrione-Functionalized Magnetic Nanoparticles as an Efficient Magnetic Nanoadsorbent for the Removal of Malachite Green and Pb(II) from Aqueous Solutions
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2020-03-30 , DOI: 10.1021/acs.jced.0c00063 Soudabeh Bakhshi Nejad 1 , Asadollah Mohammadi 1, 2
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2020-03-30 , DOI: 10.1021/acs.jced.0c00063 Soudabeh Bakhshi Nejad 1 , Asadollah Mohammadi 1, 2
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In this study, a new epoxy-triazinetrione (ETT)-functionalized magnetic nanoadsorbent (Fe3O4-ETT) has been developed for the removal of malachite green (MG) and Pb(II) from aqueous solutions. Fe3O4-ETT as a nano-adsorbent was successfully synthesized through chemical modification of Fe3O4 nanoparticles with ETT. Characterization of Fe3O4-ETT nanoparticles using Fourier transform infrared, field emission scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray, X-ray diffraction, thermogravimetric analysis, vibrating sample magnetometer, and Brunauer–Emmett–Teller (BET) analyses revealed that the Fe3O4 nanoparticles were effectively modified with ETT. Numerous amine and hydroxyl groups of the triazine ring on the nano-Fe3O4 particles were mainly responsible for the adsorption of cationic organic dye and heavy metals through multiple interactions. Based on the BET analysis, an improved surface area from 42,000 to 84,788 m2 kg–1 was achieved after the surface modification of Fe3O4 NPs by ETT. The adsorption isotherm experiments revealed that the adsorption processes of MG and Pb(II) were better described via applying the Freundlich isotherm model. Moreover, the kinetic pseudo-second-order model better described the adsorption data. The results also showed that the MG and Pb(II) pollutants could be adsorbed by the Fe3O4-ETT through two different adsorption mechanisms, including electrostatic interactions and surface complexation, respectively. In addition, the magnetic nano-adsorbent can be regenerated and reused for MG and Pb(II) removal from waters in several adsorption cycles. Thus, the excellent regeneration, low cost, and an easy synthesis route make Fe3O4-ETT an efficient nano-adsorbent for purification of water and wastewater contaminated by organic and inorganic pollutants.
中文翻译：
环氧三嗪三酮功能化的磁性纳米粒子作为一种高效的磁性纳米吸附剂，用于从水溶液中去除孔雀石绿和Pb（II）
在这项研究中，开发了一种新型的环氧三嗪三酮（ETT）功能化的磁性纳米吸附剂（Fe 3 O 4 -ETT），用于从水溶液中去除孔雀石绿（MG）和Pb（II）。通过用ETT化学修饰Fe 3 O 4纳米颗粒，成功地合成了Fe 3 O 4 -ETT作为纳米吸附剂。的Fe的表征3个ö 4使用傅里叶变换红外-ETT纳米颗粒，场发射扫描电子显微镜，透射电子显微镜，能量色散X射线，X射线衍射，热重分析，振动样品磁强计，和布鲁诺-埃梅特-特勒（ BET）分析表明，铁ETT有效地修饰了3 O 4纳米颗粒。纳米Fe 3 O 4颗粒上三嗪环上的许多胺和羟基主要是通过多种相互作用来吸附阳离子有机染料和重金属。根据BET分析，对Fe 3 O 4进行表面改性后，表面积从42,000提高到84,788 m 2 kg –1ETT的NP。吸附等温线实验表明，通过应用Freundlich等温线模型可以更好地描述MG和Pb（II）的吸附过程。此外，动力学伪二级模型更好地描述了吸附数据。结果还表明，Fe 3 O 4 -ETT可以通过两种不同的吸附机理分别吸附MG和Pb（II）污染物，包括静电相互作用和表面络合。此外，磁性纳米吸附剂可以再生，并可以在几个吸附循环中重新用于从水中去除MG和Pb（II）。因此，优异的再生，低成本和容易的合成途径使Fe 3 O 4-ETT一种有效的纳米吸附剂，用于净化被有机和无机污染物污染的水和废水。
更新日期：2020-03-30
中文翻译：
环氧三嗪三酮功能化的磁性纳米粒子作为一种高效的磁性纳米吸附剂，用于从水溶液中去除孔雀石绿和Pb（II）
在这项研究中，开发了一种新型的环氧三嗪三酮（ETT）功能化的磁性纳米吸附剂（Fe 3 O 4 -ETT），用于从水溶液中去除孔雀石绿（MG）和Pb（II）。通过用ETT化学修饰Fe 3 O 4纳米颗粒，成功地合成了Fe 3 O 4 -ETT作为纳米吸附剂。的Fe的表征3个ö 4使用傅里叶变换红外-ETT纳米颗粒，场发射扫描电子显微镜，透射电子显微镜，能量色散X射线，X射线衍射，热重分析，振动样品磁强计，和布鲁诺-埃梅特-特勒（ BET）分析表明，铁ETT有效地修饰了3 O 4纳米颗粒。纳米Fe 3 O 4颗粒上三嗪环上的许多胺和羟基主要是通过多种相互作用来吸附阳离子有机染料和重金属。根据BET分析，对Fe 3 O 4进行表面改性后，表面积从42,000提高到84,788 m 2 kg –1ETT的NP。吸附等温线实验表明，通过应用Freundlich等温线模型可以更好地描述MG和Pb（II）的吸附过程。此外，动力学伪二级模型更好地描述了吸附数据。结果还表明，Fe 3 O 4 -ETT可以通过两种不同的吸附机理分别吸附MG和Pb（II）污染物，包括静电相互作用和表面络合。此外，磁性纳米吸附剂可以再生，并可以在几个吸附循环中重新用于从水中去除MG和Pb（II）。因此，优异的再生，低成本和容易的合成途径使Fe 3 O 4-ETT一种有效的纳米吸附剂，用于净化被有机和无机污染物污染的水和废水。
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