Different Crystal Forms of ZnS Nanomaterials for the Adsorption of Elemental Mercury

doi:10.1021/acs.est.0c05878

	Different Crystal Forms of ZnS Nanomaterials for the Adsorption of Elemental Mercury
	Yang, Yang 2,3; Huang, Rui 2,4; Xu, Wenqing 1,2,3; Zhang, Jixiang 4; Li, Chaoqun 2; Song, Jianfei 4; Zhu, Tingyu 1,2
刊名	ENVIRONMENTAL SCIENCE & TECHNOLOGY
	2021-05-18
卷号	55 期号:10 页码:6965-6974
ISSN号	0013-936X
DOI	10.1021/acs.est.0c05878
英文摘要	ZnS is a promising sorbent in recovering Hg-0 from industrial flue gas due to its excellent Hg-0 adsorption capacity. However, the internal structure-activity relationship still needs to be further clarified. In this work, ZnS sorbents with different structures were synthesized with the hydrothermal method by tuning the temperature. The samples had significant differences in the crystallinity, morphology, particle size, and sulfur (S) active sites. The results indicated that Hg-0 removal performance was determined by the specific surface area and S active sites. ZnS synthesized at low temperatures (80-ZnS and 120-ZnS) had a larger surface area, while the S sites on the high-temperature-synthesized sample (160-ZnS) were more active for Hg-0 adsorption. The 160-ZnS sample exhibited a much higher Hg-0 adsorption amount per unit surface area. Further characterization revealed that S-2(2-) and S-x were the main active sites for Hg-0 adsorption. S-x existed in the form of long-chain polysulfur (L-S-x) on 80-ZnS and 120-ZnS, while it exhibited in the form of short-chain polysulfur (S-S-x) on 160-ZnS. L-S-x had negligible adsorption ability, while S-S-x had a high affinity for Hg-0. Hg-0 can react with S-2(2-) and S-S-x, forming alpha-HgS and beta-HgS, respectively. The new insight in this work can provide theoretical guidance for the design and structure optimization of ZnS, facilitating its practical industrial application.
资助项目	National Key Research and Development Program of China[2017YFC0210501] ; National Engineering Laboratory for Flue Gas Pollutants Control Technology and Equipment[NEL-KF-201902]
WOS关键词	FLUE-GAS ; SIMULTANEOUS REMOVAL ; ACTIVATED CARBON ; RAMAN-SPECTROSCOPY ; EFFICIENT REMOVAL ; HG-0 ; SORBENT ; SULFIDE ; CATALYST ; PHASE
WOS研究方向	Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000654292200044
资助机构	National Key Research and Development Program of China ; National Engineering Laboratory for Flue Gas Pollutants Control Technology and Equipment
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/49102]
专题	中国科学院过程工程研究所
通讯作者	Xu, Wenqing
作者单位	1.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China 2.Chinese Acad Sci, Innovat Acad Green Manufacture, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 3.Tsinghua Univ, Natl Engn Lab Flue Gas Pollutants Control Technol, Beijing 100084, Peoples R China 4.China Univ Petr, State Key Lab Heavy Oil Proc, Coll Mech & Transportat Engn, Beijing 102249, Peoples R China
推荐引用方式 GB/T 7714	Yang, Yang,Huang, Rui,Xu, Wenqing,et al. Different Crystal Forms of ZnS Nanomaterials for the Adsorption of Elemental Mercury[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2021,55(10):6965-6974.
APA	Yang, Yang.,Huang, Rui.,Xu, Wenqing.,Zhang, Jixiang.,Li, Chaoqun.,...&Zhu, Tingyu.(2021).Different Crystal Forms of ZnS Nanomaterials for the Adsorption of Elemental Mercury.ENVIRONMENTAL SCIENCE & TECHNOLOGY,55(10),6965-6974.
MLA	Yang, Yang,et al."Different Crystal Forms of ZnS Nanomaterials for the Adsorption of Elemental Mercury".ENVIRONMENTAL SCIENCE & TECHNOLOGY 55.10(2021):6965-6974.