超声化学辅助法制备纳米ZnS及其对水中铜离子的吸附性能

doi:10.16085/j.issn.1000-6613.2017.02.048

化工进展 ›› 2017, Vol. 36 ›› Issue (02): 750-755.DOI: 10.16085/j.issn.1000-6613.2017.02.048

超声化学辅助法制备纳米ZnS及其对水中铜离子的吸附性能

刘国清^1,2, 李友凤¹, 曾令玮¹, 王占强¹, 谭谈¹, 曾坚贤¹

1 湖南科技大学化学化工学院, 湖南湘潭 411201;
2 湖南科技大学理论有机化学与功能分子教育部重点实验室, 湖南湘潭 411201

收稿日期:2016-07-05 修回日期:2016-09-08 出版日期:2017-02-05 发布日期:2017-02-05
通讯作者: 刘国清(1982-),男,讲师,博士,主要从事功能材料制备及重金属污染处理方面的研究。E-mail:dragwinneres@126.com。
作者简介:刘国清(1982-),男,讲师,博士,主要从事功能材料制备及重金属污染处理方面的研究。E-mail:dragwinneres@126.com。
基金资助:
国家自然科学基金（51573041）、湖南省科技计划（2015JC3112）、湖南省自然科学基金（14JJ4043，2015JJ6036）及湖南省化学化工类专业校企合作人才培养示范基地（145812）项目。

Sonochemistry-assisted preparation of ZnS nanomaterials and its adsorption performance of copper ions in aqueous solution

LIU Guoqing^1,2, LI Youfeng¹, ZENG Lingwei¹, WANG Zhanqiang¹, TAN Tan¹, ZENG Jianxian¹

1 School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China;
2 Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Xiangtan 411201, Hunan, China

Received:2016-07-05 Revised:2016-09-08 Online:2017-02-05 Published:2017-02-05

摘要/Abstract

摘要： 铜污染引发的环境问题严重影响着人类的生命健康。本文以Zn（NO₃）₂·6H₂O和Na₂S·9H₂O为原料，水为溶剂，通过超声化学辅助法制备出纳米ZnS，并将其应用于水中铜离子的吸附脱除。利用FTIR、XRD、SEM和N₂物理吸附等手段进行表征，研究了初始浓度、接触时间、处理温度、pH和竞争阳离子等对铜离子吸附容量的影响。结果表明，制得的纳米ZnS为单一立方相闪锌矿，颗粒呈不规则块状，孔道结构主要为纳米ZnS晶粒团聚形成的聚集孔，孔径分布较宽。该纳米ZnS表现出对水中铜离子良好的吸附性能，在吸附剂量200mg/L、铜离子初始浓度400mg/L、接触时间12h、处理温度25℃的条件下，饱和吸附容量高达629.8mg/L，水中Na⁺和K⁺对吸附性能无明显影响，且其对水中铜离子的脱除机理为离子交换与吸附的协同作用。

关键词: 纳米材料, 硫化锌, 超声化学辅助法, 离子交换, 吸附

Abstract: Environmental issues caused by copper pollution have seriously threatened human health. In this paper,zinc sulfide(ZnS) nanomaterials were successfully synthesized with the assistance of sonochemistry in an aqueous system of Zn(NO₃)₂·6H₂O and Na₂S·9H₂O for the removal of Cu²⁺ from aqueous solution. The prepared ZnS were characterized by means of FTIR,XRD,SEM and N₂ physical adsorption. The influence of initial concentration,contact time,treat temperature,pH and competitive cations on adsorption capacities was investigated. The results showed that the prepared ZnS presented a crystalline structure of cubic zinc-blende phase and are in irregular block forms. The pore structure was mainly caused by agglomeration and had a wide pore diameter distribution. It showed excellent adsorption performance and the adsorption capacity can reach as high as 629.8mg/L under the experimental conditions as ZnS dosage of 200mg/L,initial concentration of 400mg/L,contact time of 12h and treat temperature of 25℃. The addition of Na⁺ and K⁺ had no significant effect on the adsorption properties and the Cu²⁺ removal by the ZnS nanomaterials was based on the synergistic effect of ion exchange and adsorption.

Key words: nanomaterials, zinc sulfide, sonochemistry-assisted method, ion exchange, adsorption

中图分类号:

X703.5

刘国清, 李友凤, 曾令玮, 王占强, 谭谈, 曾坚贤. 超声化学辅助法制备纳米ZnS及其对水中铜离子的吸附性能[J]. 化工进展, 2017, 36(02): 750-755.

LIU Guoqing, LI Youfeng, ZENG Lingwei, WANG Zhanqiang, TAN Tan, ZENG Jianxian. Sonochemistry-assisted preparation of ZnS nanomaterials and its adsorption performance of copper ions in aqueous solution[J]. Chemical Industry and Engineering Progree, 2017, 36(02): 750-755.

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超声化学辅助法制备纳米ZnS及其对水中铜离子的吸附性能

Sonochemistry-assisted preparation of ZnS nanomaterials and its adsorption performance of copper ions in aqueous solution

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