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Simultaneous removal of Cr(Ⅵ), Cd, and Pb from aqueous solution by iron sulfide nanoparticles: Influencing factors and interactions of metals

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Chinese Journal of Chemical Engineering 2021年第12期34卷 245-255页

作者： Qingrong Zou Wanyu Wang Tong Zhang Yuanyuan Liu State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing UniversityChongqing 400044China Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment of Ministry of Education Chongqing UniversityChongqing 400044China Central-Southern Safety&Environment Technology Institute Co. LtdWuhan 430061China

Cadmium(Cd),lead(Pb),and hexavalent chromium(Cr(Ⅵ)) are often found in soils and water affected by metal smelting,chemical manufacturing,and *** this study,synthetic iron sulfide nanoparticles(FeS NPs) were stabilized with carboxymethyl cellulose(CMC) and utilized to remove Cr(Ⅵ),Cd,and Pb from an aqueous *** experiments,a Visual MINTEQ model,scanning electron microscopy(SEM),X-ray diffraction(XRD),and X-ray photoelectron spectrometer(XPS) analysis were used to determine the removal efficiencies,influencing factors,and *** FeS NP suspension simultaneously removed Cr(Ⅵ),Cd,and Pb from an aqueous *** concentrations of Cr(Ⅵ),Cd,and Pb decreased from 50,10,and 50 mg·L^(-1) to 2.5,0.1,and 0.1 mg·L^(-1),*** removal capacities were up to 418,96,and 585 mg per gram of stabilized FeS NPs,*** acidic conditions significantly favored the removal of aqueous Cr(Ⅵ) while the alkaline conditions favored the removal of Cd and *** slightly inhibited the removal of Cr(Ⅵ),but it had no significant influence on the removal of Cd and Pb.A potential mechanism was proposed for the simultaneous removal of Cr(Ⅵ),Cd,and Pb using FeS *** interactions of the three heavy metals involved a cationic bridging effect on Cr(Ⅵ) by Cd,an enhanced adsorption effect on Cd by [Cr,Fe](OH)_3,precipitation of PbCrO_4,and transformation of PbCrO_4 to ***,FeS NPs have a high potential for use in the simultaneous removal of Cr(Ⅵ),Cd,and Pb from contaminated aqueous solutions.

关键词： iron sulfide Nanoparticles Multi-heavy metal contamination Simultaneous removal Environment Remediation

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Solvent-free Synthesis of Hexagonal iron sulfide Nanoflowers

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Chinese Journal of Chemistry 2013年第8期31卷 983-986页

作者： Xia Wang Wenhui Zhou Zhixian Chang Zhengji Zhou Sixin Wu The Key Laboratory for Special Functional Materials of MOE Henan University Kaifeng Henan 475004 China

Employing green and economic solvent-free synthesis route, hexagonal iron sulfide （Fe7Ss） nanoflowers were successfully synthesized for the first time. In the experiment, ferric hexadecylxanthate was used as the precursor, and hexagonal iron sulfide （Fe7Ss） nanoflowers were obtained by thermal decomposition of the precursor at 260 ~C without any additional solvent or inert gas protection. The as-prepared iron sulfide nanoflowers were characterized by means of X-ray diffraction （XRD）, transmission electron microscopy （TEM）, scanning electron microscopy （SEM） and energy dispersive spectrometry （EDS）. The characterization results indicated that the nanoflowers had uniform size distribution with an average size of about 160 rim. The proposed strategy provides a possible general route for the synthesis of other metal chalcogenide nanostructures.

关键词： semiconducting material synthesis iron sulfide Fe7S8 solvent-free

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Formation of iron sulfide in Water-Body Sediment and Its Influence on Environment

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Journal of Northeast Agricultural University(English Edition) 2008年第4期15卷 76-79页

作者： YAN Lei SUMI Katsuhiro Resources and Environmental Sciences College Northeast Agricultural University Harbin 150030 China Department of Engineering Graduate School of Engineering Kochi University of Technology Kochi 782-8502 Japan

iron sulfide is an important reductive pollutant in aquatic sediment,so that increasing attentions have been paid to it in recent *** this paper,the formation of iron sulfide in water-body sediment was ***,its adverse influences upon environment were summarized,including direct contribution to deficiency of dissolved oxygen in water,association with eutrophication in water-bodies and impact on geochemical sulfur *** conventional chemical analysis for iron sulfide has several disadvantages,new technique for rapid determination of iron sulfide on-line was prospected.

关键词： iron sulfide water-body pollution sediment

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Corrosion Behavior of X52 Anti-H_2S Pipeline Steel Exposed to High H_2S Concentration Solutions at 90℃

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Journal of Materials Science & Technology 2014年第5期30卷 504-510页

作者： Meng Liu Jianqiu Wang Wei Ke En-Hou Han State Key Laboratory for Corrosion and Protection Institute of Metal ResearchChinese Academy of Sciences

Initial corrosion kinetics of X52 anti-H2S pipeline steel exposed to 90 ℃/1.61 MPa H2S solutions was investigated through high temperature and high pressure immersion tests. Corrosion rates were obtained based on weight loss calculation. The corrosion products were analyzed by scanning electron microscopy （SEM）, transmission electron microscopy （TEM）, X-ray diffraction （XRD） and electron probe micro-analysis （EPMA）. The initial corrosion kinetics was found to obey the exponential law. With increasing immersion time, the main corrosion products changed from iron-rich mackinawite to sulfur-rich pyrrhotite. The corrosion films had two layers： an inner fine-grained layer rich in iron and an outer columnar-grained layer rich in sulfur. The corrosion film formed through the combination of outward diffusion of Fe2＋ ions and inward diffusion of HS^- ions. The variation of the corrosion products and compaction of the corrosion layer resulted in a decrease in the diffusion coefficient with increasing immersion time. The double-layered corrosion film formed after long time immersion acted as an effective barrier against diffusion.

关键词： H2S corrosion X52 anti-H2S pipeline steel High temperature iron sulfide

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The Contact Interface Engineering of All-sulfide-Based Solid State Batteries via Infiltrating Dissoluble sulfide Electrolyte

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Energy & Environmental Materials 2023年第6期6卷 364-371页

作者： Lei Xi Yu Li Dechao Zhang Zhengbo Liu Xijun Xu Jun Liu Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials School of Materials Science and EngineeringSouth China University of TechnologyGuangzhou 510641China

All-solid-state lithium batteries(ASSLBs)based on sulfide solid electrolytes(SEs)are one of the most promising strategies for next-generation energy storage systems and electronic ***,the poor chemical/electrochemical stability of sulfide SEs with oxide cathode materials and high interfacial impedance,particularly due to physical contact failure,are the major limiting factors to the development of sulfide SEs in ***,the composite cathode of MOF-derived Fe_(7)S_(8)@C and Li_(6)PS_(5)Br fabricated by an infiltration method(IN-Fe_(7)S_(8))with dissoluble sulfide electrolyte(dissoluble SE)is *** SE can easily infiltrate the porous sheet-type Fe_(7)S_(8)@C cathode to homogeneously contact with Fe_(7)S_(8)nanoparticles that are embedded in the surrounding carbon matrixes and form a fast ionic transport *** from applying dissoluble SE and Fe_(7)S_(8)@C,the IN-Fe_(7)S_(8)-based cells displayed a reversible capacity of 510 mAh g^(-1)after 180 cycles at 0.045 mA cm^(-2)at 30℃.This work demonstrates a novel and practical method for the development of high-performance all-sulfide-based solid state batteries.

关键词： all-solid-state lithium batteries infiltration ionic transport iron sulfide sulfide solid electrolyte

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Design of pyrite/carbon nanospheres as high-capacity cathode for lithium-ion batteries

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Journal of Energy Chemistry 2020年第1期29卷 1-6,I0001页

作者： Qinqin Xiong Xiaojing Teng Jingjing Lou Guoxiang Pan Xinhui Xia Hongzhong Chi Xiaoxiao Lu Tao Yang Zhenguo Ji College of Materials and Environmental Engineering Hangzhou Dianzi UniversityHangzhou 310018Zhejiang.China Department of Materials Chemistry Huzhou UniversityHuzhou 313000ZhejiangChina State Key Laboratory of Silicon Materials Department of Materials Science&EngineeringZhejiang UniversityHangzhou 310027ZhejiangChina Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) College of ChemistryNankai UniversityTianjin 300071China

Transition metal sulfides are emerging as promising electrode materials for energy storage and *** this work,hierarchical FeS2/C nanospheres are synthesized through a controllable solvothermal method followed by the annealing *** FeS2 core is homogeneously coated by thin carbon *** hierarchical nanostructure and carbon coating can enhance electron transfer and accommodate the stress originated from the volume change as well as suppress the shuttle effect of ***,as the cathode material of lithium ion batteries(LIBs),the FeS2/C nanospheres exhibit high reversible capacity of 676 m Ahg^-1 and excellent cycling life with the capacity retention of 97.1%after100 *** addition,even at the high current density of 1.8 C,a reversible capacity of 437 m Ahg^-1 is obtained for the FeS2/C nanospheres,demonstrating its great prospect for practical applications in highperformance LIBs.

关键词： iron sulfide Carbon coating Cathode Nanosphere Lithium ion batteries

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All-Climate Aluminum-Ion Batteries Based on Binder-Free MOF-Derived FeS_(2)@C/CNT Cathode

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Nano-Micro Letters 2021年第10期13卷 276-287页

作者： Yuxiang Hu Hongjiao Huang Deshuang Yu Xinyi Wang Linlin Li Han Hu Xiaobo Zhu Shengjie Peng Lianzhou Wang Nanomaterials Centre School of Chemical Engineering and Australian Institute for Bioengineering and NanotechnologyThe University of QueenslandBrisbaneQueensland 4072Australia Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies College of Materials Science and TechnologyNanjing University of Aeronautics and AstronauticsNanjing 211106People’s Republic of China State Key Laboratory of Heavy Oil Processing College of Chemical EngineeringUniversity of Petroleum(East China)Qingdao 266580People’s Republic of China

Aluminum-ion batteries(AIBs)are promising next-generation batteries systems because of their features of low cost and abundant aluminum ***,the inferior rate capacity and poor all-climate performance,especially the decayed capacity under low temperature,are still critical challenges toward high-specific-capacity ***,we report a binder-free and freestanding metal-organic framework-derived FeS_(2)@C/carbon nanotube(FeS_(2)@C/CNT)as a novel all-climate cathode in AIBs working under a wide temperature window between−25 and 50℃ with exceptional *** resultant cathode not only drastically suppresses the side reaction and volu-metric expansion with high capacity and long-term stability but also greatly enhances the kinetic process in AIBs with remarkable rate capacity(above 151 mAh g^(−1) at 2 A g^(−1))at room *** importantly,to break the bottleneck of the inherently low capacity in graphitic material-based all-climate AIBs,the new hierarchical conductive composite FeS_(2)@C/CNT highly promotes the all-climate performance and delivers as high as 117 mAh g^(−1) capacity even under−25°*** well-designed metal sulfide electrode with remarkable performance paves a new way toward all-climate and flexible AIBs.

关键词： Aluminum-ion battery All-climate battery iron sulfide Binder-free High rate capacity

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Improvement of hydrogen permeation barrier performance by iron sulphide surface films

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International Journal of Minerals,Metallurgy and Materials 2023年第9期30卷 1792-1800页

作者： Pengpeng Bai Shaowei Li Jie Cheng Xiangli Wen Shuqi Zheng Changfeng Chen Yu Tian State Key Laboratory of Tribology Department of Mechanical EngineeringTsinghua UniversityBeijing 100084China School of Mechanical Engineering University of Science and Technology BeijingBeijing 100083China School of Mechanical Electronic&Information Engineering China University of Mining and Technology-BeijingBeijing 100083China State Key Laboratory of Heavy Oil Processing China University of PetroleumBeijing 102249China

Fe–S compounds with hexagonal crystal structure are potential hydrogen permeation barrier during H2S corrosion. Hexagonal system Fe–S films were prepared on carbon steel through corrosion and CVD deposition, and the barrier effect of different Fe–S films on hydrogen permeation was tested using electrochemical hydrogen permeation method. After that, the electrical properties of Fe–S compound during phase transformation were measured using thermoelectric measurement system. Results show that the mackinawite has no obvious barrier effect on hydrogen penetration, as a p-type semiconductor, and pyrrhotite (including troilite) has obvious barrier effect on hydrogen penetration,as an n-type semiconductor. Hydrogen permeation tests showed peak permeation performance when the surface was deposited with a continuous film of pyrrhotite (Fe_(1–x)S) and troilite. The FeS compounds suppressed hydrogen permeation by the promotion of the hydrogen evolution reaction, semiconducting inversion from p-to n-type, and the migration of ions at the interface.

关键词： hydrogen permeation barrier iron sulfide pyrrhotite semiconductor

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Porous FeS nanofibers with numerous nanovoids obtained by Kirkendall diffusion effect for use as anode materials for sodium-ion batteries

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Nano Research 2017年第3期10卷 897-907页

作者： Jung Sang Cho Jin-Sung Park Yun Chan Kang Department of Materials Science and Engineering Korea University Anam-Dong Seongbuk-Gu Seou1136-713 Republic of Korea Department of Engineering Chemistry Chungbuk National University Chungbuk 361-763 Republic of Korea

Porous FeS nanofibers with numerous nanovoids for use as anode materials for sodium-ion batteries were prepared by electrospinning and subsequent sulfidation. The post-treatment of the as-spun Fe（acac）3-polyacrylonitrile composite nanofibers in an air atmosphere yielded hollow Fe2O3 nanofibers due to Ostwald ripening. The ultrafine Fe2O3 nanocrystals formed at the center of the fiber diffused toward the outside of the fiber via Ostwald ripening. On sulfidation, the Fe2O3 hollow nanofibers were transformed into porous FeS nanofibers, which contained numerous nanovoids. The formation of porosity in the FeS nanofibers was driven by nanoscale Kirkendall diffusion. The porous FeS nanofibers were very structurally stable and had superior sodium-ion storage properties compared with the hollow Fe2O3 nanofibers. The discharge capacities of the porous FeS nanofibers for the Ist and 150th cycles at a current density of 500 mA.g-1 were 561 and 592 mA.h-g-1, respectively. The FeS nanofibers had final discharge capacities of 456, 437, 413, 394, 380, and 353 mA-h.g-1 at current densities of 0.2, 0.5, 1.0, 2.0, 3.0, and 5.0 A.g-1, respectively.

关键词： iron sulfide sodium-ion batteries Kirkendall effect nanofibers electrospinning

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Hierarchical graphene@MXene composite foam modified with flower-shaped FeS for efficient and broadband electromagnetic absorption

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Journal of Materials Science & Technology 2023年第2期133卷 238-248页

作者： Shuangshuang Li Xinwei Tang Xu Zhao Shijie Lu Jiangtao Luo Zheyuan Chai Tiantian Ma Qianqian Lan Piming Ma Weifu Dong Zicheng Wang Tianxi Liu The Key Laboratory of Synthetic and Biological Colloids Ministry of EducationSchool of Chemical and Material EngineeringInternational Joint Research Laboratory for Nano Energy CompositesJiangnan UniversityWuxi 214122China

Developing high-performance broadband microwave absorption material becomes an urgent concern in the field of electromagnetic *** this work,an ultralight magnetic composite foam was con-structed by electrostatic self-assembly of MXene on the surface of graphene skeletons,and subsequent hydrothermal anchoring of flower-shaped FeS *** the synergistic effect of MXene coating in-creasing conductive loss and FeS clusters improving magnetic loss,the rational construction of hierarchi-cal impedance structure in foam can effectively promote the entrance and consumption of more incident electromagnetic *** minimum reflection loss(RL min)reaches-47.17 dB at a thickness of 4.78 mm,and the corresponding effective absorption bandwidth(EAB)is up to 6.15 *** importantly,the microwave absorption performance of composite foam can be further optimized by controlling the load-ing of MXene and thermal treatment at a low *** maximum of EAB for GMF-300 can be extended to an unprecedented value of 11.20 GHz(covering 6.10-17.30 GHz).

关键词： Graphene MXene iron sulfide Hierarchical structure Foam Microwave absorption

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