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Preparation of CeO2@SiO2 Microspheres by a Non-sintering Strategy for Highly Selective and Continuous Adsorption of Fluoride Ions from Wastewater
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2019-08-09 00:00:00 , DOI: 10.1021/acssuschemeng.9b02643
Fan Wang 1 , Kaituo Wang 1 , Yaseen Muhammad 2 , Yuezhou Wei 1 , Lin Shao 1 , Xinpeng Wang 1
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2019-08-09 00:00:00 , DOI: 10.1021/acssuschemeng.9b02643
Fan Wang 1 , Kaituo Wang 1 , Yaseen Muhammad 2 , Yuezhou Wei 1 , Lin Shao 1 , Xinpeng Wang 1
Affiliation
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High-performance composite materials with an environment-friendly and cost-effective nature are attracting much attention in environmental pollution abatement. In this study, a novel CeO2@SiO2 adsorbent was prepared via a novel approach based on vacuum rotary evaporation and co-precipitation following a non-sintering strategy avoiding the application of high-temperature calcination with very simplified mechanization. The fabricated CeO2@SiO2 was applied for the adsorption of F– ions from wastewater achieving much higher adsorption efficiency (257.7–363.9 mg/g (298–338 K)) than many reported adsorbents. In addition to this, CeO2@SiO2 realized high selectivity for F– ions (residual concentration of less than 1.5 mg/L) under the presence of NO3–, SO42–, and Cl– as counteranions as a simulated system. Concurrently, CeO2@SiO2 adsorbents also realized excellent adsorption performance in real seawater and tap water. The used adsorbent was easily regenerated via desorption in NaOH solutions and could be reused for four consecutive cycles with minimal loss in adsorption efficiency. This study provides an alternative, promising, cost-effective, convenient, and highly efficient CeO2@SiO2 microsphere adsorbent for the abatement of F– from wastewater, both in the presence and absence of counteranions.
中文翻译：
非烧结策略制备高选择性连续吸附废水中氟离子的CeO 2 @SiO 2微球
具有环保和成本效益特性的高性能复合材料在减少环境污染方面引起了广泛关注。在这项研究中，通过一种基于非旋转策略的真空旋转蒸发和共沉淀方法，通过新颖的方法制备了一种新型CeO 2 @SiO 2吸附剂，该方法避免了高温煅烧的应用，并且简化了机械化过程。所制造的CeO 2 @SiO 2涂敷了用于F的吸附-从废水的离子实现比许多报道吸附剂高得多的吸附效率（257.7-363.9毫克/克（298-338 K））。除此之外，CeO 2 @SiO 2与F实现高选择性-离子下NO的存在（小于1.5毫克/升残余浓度）3 -，SO 4 2-和Cl -作为抗衡阴离子的模拟系统。同时，CeO 2 @SiO 2吸附剂在真实的海水和自来水中也实现了优异的吸附性能。用过的吸附剂很容易通过在NaOH溶液中解吸而再生，并且可以连续四个循环重复使用，而吸附效率损失最小。这项研究提供了一种替代的，有前途的，具有成本效益的，方便的和高效的CeO 2 @SiO 2微球吸附剂，用于减少F。–在有和没有抗衡阴离子的情况下，从废水中提取。
更新日期：2019-08-09
中文翻译：
非烧结策略制备高选择性连续吸附废水中氟离子的CeO 2 @SiO 2微球
具有环保和成本效益特性的高性能复合材料在减少环境污染方面引起了广泛关注。在这项研究中，通过一种基于非旋转策略的真空旋转蒸发和共沉淀方法，通过新颖的方法制备了一种新型CeO 2 @SiO 2吸附剂，该方法避免了高温煅烧的应用，并且简化了机械化过程。所制造的CeO 2 @SiO 2涂敷了用于F的吸附-从废水的离子实现比许多报道吸附剂高得多的吸附效率（257.7-363.9毫克/克（298-338 K））。除此之外，CeO 2 @SiO 2与F实现高选择性-离子下NO的存在（小于1.5毫克/升残余浓度）3 -，SO 4 2-和Cl -作为抗衡阴离子的模拟系统。同时，CeO 2 @SiO 2吸附剂在真实的海水和自来水中也实现了优异的吸附性能。用过的吸附剂很容易通过在NaOH溶液中解吸而再生，并且可以连续四个循环重复使用，而吸附效率损失最小。这项研究提供了一种替代的，有前途的，具有成本效益的，方便的和高效的CeO 2 @SiO 2微球吸附剂，用于减少F。–在有和没有抗衡阴离子的情况下，从废水中提取。
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