CAS OpenIR
Different Crystal Forms of ZnS Nanomaterials for the Adsorption of Elemental Mercury
Yang, Yang1,2; Huang, Rui1,3; Xu, Wenqing1,2,4; Zhang, Jixiang3; Li, Chaoqun1; Song, Jianfei3; Zhu, Tingyu1,4
2021-05-18
Source PublicationENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN0013-936X
Volume55Issue:10Pages:6965-6974
AbstractZnS 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.
DOI10.1021/acs.est.0c05878
Language英语
WOS KeywordFLUE-GAS ; SIMULTANEOUS REMOVAL ; ACTIVATED CARBON ; RAMAN-SPECTROSCOPY ; EFFICIENT REMOVAL ; HG-0 ; SORBENT ; SULFIDE ; CATALYST ; PHASE
Funding ProjectNational Key Research and Development Program of China[2017YFC0210501] ; National Engineering Laboratory for Flue Gas Pollutants Control Technology and Equipment[NEL-KF-201902]
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Environmental Sciences
Funding OrganizationNational Key Research and Development Program of China ; National Engineering Laboratory for Flue Gas Pollutants Control Technology and Equipment
WOS IDWOS:000654292200044
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/49103
Collection中国科学院过程工程研究所
Corresponding AuthorXu, Wenqing
Affiliation1.Chinese Acad Sci, Innovat Acad Green Manufacture, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Tsinghua Univ, Natl Engn Lab Flue Gas Pollutants Control Technol, Beijing 100084, Peoples R China
3.China Univ Petr, State Key Lab Heavy Oil Proc, Coll Mech & Transportat Engn, Beijing 102249, Peoples R China
4.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China
Recommended Citation
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.
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