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Xu Z, Huang Z, Li H, Zhu S, Lei Z, Liu C, Meng F, Chen JL, Chen TY, Feng C. Sulfidation-reoxidation enhances heavy metal immobilization by vivianite. WATER RESEARCH 2024; 263:122195. [PMID: 39116713 DOI: 10.1016/j.watres.2024.122195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Revised: 07/24/2024] [Accepted: 07/30/2024] [Indexed: 08/10/2024]
Abstract
Iron minerals in nature are pivotal hosts for heavy metals, significantly influencing their geochemical cycling and eventual fate. It is generally accepted that, vivianite, a prevalent iron phosphate mineral in aquatic and terrestrial environments, exhibits a limited capacity for adsorbing cationic heavy metals. However, our study unveils a remarkable phenomenon that the synergistic interaction between sulfide (S2-) and vivianite triggers an unexpected sulfidation-reoxidation process, enhancing the immobilization of heavy metals such as cadmium (Cd), copper (Cu), and zinc (Zn). For instance, the combination of vivianite and S2- boosted the removal of Cd2+ from the aqueous phase under anaerobic conditions, and ensured the retention of Cd stabilized in the solid phase when shifted to aerobic conditions. It is intriguing to note that no discrete FeS formation was detected in the sulfidation phase, and the primary crystal structure of vivianite largely retained its integrity throughout the whole process. Detailed molecular-level investigations indicate that sulfidation predominantly targets the Fe(II) sites at the corners of the PO4 tetrahedron in vivianite. With the transition to aerobic conditions, the exothermic oxidation of CdS and the S sites in vivianite initiates, rendering it thermodynamically favorable for Cd to form multidentate coordination structures, predominantly through the Cd-O-P and Cd-O-Fe bonds. This mechanism elucidates how Cd is incorporated into the vivianite structure, highlighting a novel pathway for heavy metal immobilization via the sulfidation-reoxidation dynamics in iron phosphate minerals.
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Affiliation(s)
- Zhangyi Xu
- Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Ziyuan Huang
- Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Han Li
- Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Shishu Zhu
- Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Zhenchao Lei
- Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Chengshuai Liu
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, PR China.
| | - Fangyuan Meng
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, PR China
| | - Jeng-Lung Chen
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan, ROC
| | - Tsung-Yi Chen
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan, ROC
| | - Chunhua Feng
- Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China.
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Yuan B, Cademartiri L. Growth of Colloidal Nanocrystals by Liquid-Like Coalescence*. Angew Chem Int Ed Engl 2021; 60:6667-6672. [PMID: 33326683 DOI: 10.1002/anie.202014275] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 11/30/2020] [Indexed: 11/10/2022]
Abstract
We here describe, model, and predict the growth kinetics of amine-capped PbS colloidal nanoparticles in the absence of supersaturation. The particles grow by coalescence rather than by Ostwald ripening. A comparison of different models indicates that the effective activation energy of coalescence (67.65 kJ mol-1 ) is associated with two terms: a term proportional to the contact area between the ligand shells of two colliding particles, and a constant term. Our Brownian dynamics simulations show (i) how the remarkably low activation energy (or large rate constants) are most likely due to the large difference in size between the particles and their mean free path of diffusion, and (ii) how the low polydispersity is the likely result of the suppression of collision rates between rare populations due to crowding. The model successfully predicts the growth kinetics of nanoparticles, therefore enabling the precise control of the average particle size without the need of supersaturation.
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Affiliation(s)
- Bin Yuan
- Department of Materials Science & Engineering, Iowa State University of Science and Technology, 2220 Hoover Hall, Ames, IA, 50011, USA.,Department of Chemical & Biological Engineering, Iowa State University of Science and Technology, Sweeney Hall, Ames, IA, 50011, USA.,Current address: Mechanical Engineering Department, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA, 15213, USA
| | - Ludovico Cademartiri
- Department of Materials Science & Engineering, Iowa State University of Science and Technology, 2220 Hoover Hall, Ames, IA, 50011, USA.,Department of Chemical & Biological Engineering, Iowa State University of Science and Technology, Sweeney Hall, Ames, IA, 50011, USA.,Ames Laboratory, U.S. Department of Energy, Ames, IA, 50011, USA.,Department of Chemistry, Life Sciences, and Environmental Sustainability, University of Parma, Parco Area delle Scienze, 17/A, 43124, Parma, Italy
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Yuan B, Cademartiri L. Growth of Colloidal Nanocrystals by Liquid‐Like Coalescence**. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Bin Yuan
- Department of Materials Science & Engineering Iowa State University of Science and Technology 2220 Hoover Hall Ames IA 50011 USA
- Department of Chemical & Biological Engineering Iowa State University of Science and Technology Sweeney Hall Ames IA 50011 USA
- Current address: Mechanical Engineering Department Carnegie Mellon University 5000 Forbes Avenue Pittsburgh PA 15213 USA
| | - Ludovico Cademartiri
- Department of Materials Science & Engineering Iowa State University of Science and Technology 2220 Hoover Hall Ames IA 50011 USA
- Department of Chemical & Biological Engineering Iowa State University of Science and Technology Sweeney Hall Ames IA 50011 USA
- Ames Laboratory U.S. Department of Energy Ames IA 50011 USA
- Department of Chemistry, Life Sciences, and Environmental Sustainability University of Parma Parco Area delle Scienze, 17/A 43124 Parma Italy
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Balischewski C, Choi H, Behrens K, Beqiraj A, Körzdörfer T, Geßner A, Wedel A, Taubert A. Metal Sulfide Nanoparticle Synthesis with Ionic Liquids - State of the Art and Future Perspectives. ChemistryOpen 2021; 10:272-295. [PMID: 33751846 PMCID: PMC7944564 DOI: 10.1002/open.202000357] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 02/12/2021] [Indexed: 11/10/2022] Open
Abstract
Metal sulfides are among the most promising materials for a wide variety of technologically relevant applications ranging from energy to environment and beyond. Incidentally, ionic liquids (ILs) have been among the top research subjects for the same applications and also for inorganic materials synthesis. As a result, the exploitation of the peculiar properties of ILs for metal sulfide synthesis could provide attractive new avenues for the generation of new, highly specific metal sulfides for numerous applications. This article therefore describes current developments in metal sulfide nanoparticle synthesis as exemplified by a number of highlight examples. Moreover, the article demonstrates how ILs have been used in metal sulfide synthesis and discusses the benefits of using ILs over more traditional approaches. Finally, the article demonstrates some technological challenges and how ILs could be used to further advance the production and specific property engineering of metal sulfide nanomaterials, again based on a number of selected examples.
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Affiliation(s)
- Christian Balischewski
- Institute of ChemistryUniversity of PotsdamKarl-Liebknecht-Str. 24–2514476PotsdamGermany
| | - Hyung‐Seok Choi
- Fraunhofer Institute for Applied Polymer Research (IAP)Functional Materials and Devices/Functional Polymer SystemsGeiselbergstrasse 6914476Potsdam-GolmGermany
| | - Karsten Behrens
- Institute of ChemistryUniversity of PotsdamKarl-Liebknecht-Str. 24–2514476PotsdamGermany
| | - Alkit Beqiraj
- Institute of ChemistryUniversity of PotsdamKarl-Liebknecht-Str. 24–2514476PotsdamGermany
| | - Thomas Körzdörfer
- Institute of ChemistryUniversity of PotsdamKarl-Liebknecht-Str. 24–2514476PotsdamGermany
| | - André Geßner
- Fraunhofer Institute for Applied Polymer Research (IAP)Functional Materials and Devices/Functional Polymer SystemsGeiselbergstrasse 6914476Potsdam-GolmGermany
| | - Armin Wedel
- Fraunhofer Institute for Applied Polymer Research (IAP)Functional Materials and Devices/Functional Polymer SystemsGeiselbergstrasse 6914476Potsdam-GolmGermany
| | - Andreas Taubert
- Institute of ChemistryUniversity of PotsdamKarl-Liebknecht-Str. 24–2514476PotsdamGermany
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