Highly efficient and irreversible removal of cadmium through the formation of a solid solution
文献类型：期刊论文
| 作者 | Wang, Chen; Yin, Hui; Bi, Lei; Su, Jing; Zhang, Meiyi ; Lyu, Tao; Cooper, Mick; Pan, Gang
|
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2020-02-15 |
| 卷号 | 384页码:1-10 |
| 关键词 | Metal sulfides Environmental remediation Heavy metal Solid solution |
| ISSN号 | 0304-3894 |
| 英文摘要 | Sulfur-containing materials are very attractive for the efficient decontamination of some heavy metals. However, the effective and irreversible removal of Cd2+, coupled with a high uptake efficiency, remains a great challenge due to the relatively low bond dissociation energy of CdS. Herein, we propose a new strategy to overcome this challenge, by the incorporation of Cd2+ into a stable ZnxCd1-xS solid solution, rather than into CdS. This can be realised through the adsorption of Cd2+ by ZnS nanoparticles, which have exhibited a Cd2+ uptake capacity of approximate 400 mg g(-1). Through this adsorption mechanism, the Cd2+ concentration in a contaminated solution could effectively be reduced from 50 ppb to < 3 ppb, a WHO limit acceptable for drinking water. In addition, ZnS continued to exhibit this noteworthy uptake capacity even in the presence of Cu2+, Pb2+, and Hg2+. ZnS displayed high chemical stability. Particles aged in air for 3 months still retained a > 80% uptake capacity for Cd2+, compared with only 9% uptake capacity for similarly-aged FeS particles. This work reveals a new mechanism for Cd2+ removal with ZnS and establishes a valuable starting point for further studies into the formation of solid solutions for hazardous heavy metal removal applications. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/44874]  |
| 专题 | 生态环境研究中心_环境纳米材料实验室 |
| 推荐引用方式 GB/T 7714 | Wang, Chen,Yin, Hui,Bi, Lei,et al. Highly efficient and irreversible removal of cadmium through the formation of a solid solution[J]. JOURNAL OF HAZARDOUS MATERIALS,2020,384:1-10. |
| APA | Wang, Chen.,Yin, Hui.,Bi, Lei.,Su, Jing.,Zhang, Meiyi.,...&Pan, Gang.(2020).Highly efficient and irreversible removal of cadmium through the formation of a solid solution.JOURNAL OF HAZARDOUS MATERIALS,384,1-10. |
| MLA | Wang, Chen,et al."Highly efficient and irreversible removal of cadmium through the formation of a solid solution".JOURNAL OF HAZARDOUS MATERIALS 384(2020):1-10. |
入库方式： OAI收割
来源：生态环境研究中心
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