环境工程学报2024，Vol.18Issue(10)：2775-2784,10.DOI:10.12030/j.cjee.202310123
CuxS纳米团簇磁性吸附剂的制备及其对Hg2+的吸附性能与机理
Preparation of CuxS nanocluster magnetic adsorbent and its Hg2+adsorption performance and mechanism
摘要
Abstract
Wastewater containing Hg2+emitted from coal combustion,non-ferrous metallurgy and other industries poses a serious threat to human health and ecosystems.CuxS/PDA@Fe3O4 magnetic nano-adsorbent was developed for effiicient and sustainable removal of Hg2+from wastewater.By modifying Fe3O4 nanoparticles with polydopamine(PDA)and firmly anchoring CuxS nanoclusters onto the positively charged PDA@Fe3O4 surface through liquid-phase chemical deposition,a type of CuxS/PDA@Fe3O4 magnetic nano-adsorbent with stable structure is synthesized.Within 120 minutes,the adsorbent can achieve a Hg2+adsorption capacity of 1 394.61 mg·g-1,and also maintains high selectivity for Hg2+in complex environments.Optimization studies reveal the optimal preparation conditions are following:CuCl2 dosage of 0.04 mol·L-1,the synthesis temperature of 20℃,and pH 3.0.Desorption and regeneration of the adsorbent are successfully achieved using HC1 solution,demonstrating its excellent recyclability.Furthermore,the magnetic property of the adsorbent facilitates the rapid separation and recovery after adsorption.The adsorbent can be prepared with low cost,simple and efficient process,and has a promising application in mercury pollution control and heavy metal wastewater treatment.关键词
CuxS纳米团簇/磁性吸附剂/优化制备/Hg2+吸附性能/吸附机理Key words
CuxS nanoclusters/magnetic adsorbent/optimized preparation/Hg2+adsorption performance/adsorption mechanism分类
资源环境引用本文复制引用
李鹏,崔英,戴国夫..CuxS纳米团簇磁性吸附剂的制备及其对Hg2+的吸附性能与机理[J].环境工程学报,2024,18(10):2775-2784,10.基金项目
国家重点研发计划项目(2022YFF1303305) （2022YFF1303305）
国家自然科学基金青年基金项目(52104173) （52104173）
中央高校基本科研业务费专项资金(2023ZDPY02) （2023ZDPY02）
