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Oxygen-Rich Activated Carbon Fibers with Exceptional Cu(II) Adsorptivity and Recycling Performance
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-06-30 , DOI: 10.1021/acs.iecr.0c01918 Kun Qiao 1 , Junwei Yu 2, 3 , Bo Zhu 2, 3 , Chong Chi 2, 3 , Chengrui Di 1 , Yuan Cheng 4 , Mingpeng Shang 2, 3 , Chen Li 5
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-06-30 , DOI: 10.1021/acs.iecr.0c01918 Kun Qiao 1 , Junwei Yu 2, 3 , Bo Zhu 2, 3 , Chong Chi 2, 3 , Chengrui Di 1 , Yuan Cheng 4 , Mingpeng Shang 2, 3 , Chen Li 5
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Activated carbon fiber felts (ACFFs) have abundant micropores and excellent physical adsorption properties but have a lower adsorptivity for Cu(II). A novel reactivation process, which introduced sonication in the traditional chemical-activation process, was utilized to prepared oxygen-enriched ACFFs with high surface oxygen content, high specific surface area, and high Cu(II) adsorptivity. In addition, the sonication-assisted pickling regeneration process is researched to realize the cyclic utilization of oxygen-rich ACFFs. Ultimately, the oxygen content, specific surface area, and micropore volume of the oxygen-rich ACFFs can reach 24.21%, 2674.7 m2·g–1, and 0.9593 cm3·g–1 respectively. The Cu(II) adsorption value of oxygen-rich ACFFs can reach 35.24 mg·g–1, which is 6.94 times that of pristine felts. Its regeneration rate can always be greater than 100% after five adsorption–regeneration cycles by the sonication-assisted pickling regeneration process.
中文翻译：
具有出色的Cu（II）吸附性和再循环性能的富氧活性碳纤维
活性碳纤维毡（ACFF）具有丰富的微孔和出色的物理吸附性能，但对Cu（II）的吸附性较低。利用一种新颖的再活化方法，在传统的化学活化方法中引入了超声处理，从而制备了具有高表面氧含量，高比表面积和高Cu（II）吸附性的富氧ACFF。此外，研究了超声辅助酸洗再生过程，以实现富氧ACFFs的循环利用。最终，富氧ACFF的氧含量，比表面积和微孔体积可以达到24.21％，2674.7 m 2 ·g –1和0.9593 cm 3 ·g –1分别。富氧ACFFs的Cu（II）吸附值可达到35.24 mg·g –1，是原始毛毡的6.94倍。通过超声辅助酸洗再生工艺，经过五个吸附-再生循环后，其再生率始终可以大于100％。
更新日期：2020-07-22
中文翻译：
具有出色的Cu（II）吸附性和再循环性能的富氧活性碳纤维
活性碳纤维毡（ACFF）具有丰富的微孔和出色的物理吸附性能，但对Cu（II）的吸附性较低。利用一种新颖的再活化方法，在传统的化学活化方法中引入了超声处理，从而制备了具有高表面氧含量，高比表面积和高Cu（II）吸附性的富氧ACFF。此外，研究了超声辅助酸洗再生过程，以实现富氧ACFFs的循环利用。最终，富氧ACFF的氧含量，比表面积和微孔体积可以达到24.21％，2674.7 m 2 ·g –1和0.9593 cm 3 ·g –1分别。富氧ACFFs的Cu（II）吸附值可达到35.24 mg·g –1，是原始毛毡的6.94倍。通过超声辅助酸洗再生工艺，经过五个吸附-再生循环后，其再生率始终可以大于100％。
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