Ion-Exchangeable Cobalt Polysulfide Chalcogel

Shafaei‐Fallah, Maryam; He, Jiaqing; Rothenberger, Alexander; Kanatzidis, Mercouri G.

doi:10.1021/ja1089028

Cited by 54 publications

(47 citation statements)

References 25 publications

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“…Besides, the application of metal isotopes recently receives attention for the discrimination between the spiked metals and background metals in the field of influence of aging on heavy metals bioavailability in sediment (Zhong et al, 2012(Zhong et al, , 2013. Latest years studies have focused on the application of polysulfides to insolubilize metals, which are based on S-metals binding and have achieved increasingly positive effects Oh et al, 2012;Shafaei-Fallah et al, 2011). The application of these potential poly-sulfides, therefore, provides us an efficient and applicable potential way to make heavy metals in sediment insoluble and further decrease the lethal bioavailability on biotas.…”

Section: Conclusion and Expectationsmentioning

confidence: 99%

Effects of sediment geochemical properties on heavy metal bioavailability

Zhang

Zeng

et al. 2014

Environment International

660

206

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As the largest container and resource of metals, sediment has a special role in the fate of metals. Factors influencing bioavailability of heavy metals in sediment have never been comprehensively considered and the sediment properties still fail to understand and even controversial. In this review, the mechanisms of sediment properties such as acid-volatile sulfides (AVS), organic matter, texture (clay, silt or sand) and geology, organism behaviors as well as those influencing the bioavailability of metals were analyzed. Under anoxic condition, AVS mainly reduce the solubility and toxicity of metals, while organic matters, Fe-Mn oxides, clay or silt can stabilize heavy metals in elevated oxidative-reductive potential (ORP). Other factors including the variation of pH, redox potential, aging as well as nutrition and the behavior of benthic organism in sediment also largely alter metals mobility and distribution. These factors are often inter-related, and various toxicity assessment methods used to evaluate the bioavailability of trace metals have been also discussed. Additionally, we expect that some novel synthetic materials like polysulfides, nano-materials, provide the substantial amendments for metals pollution in sediment.

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Section: Conclusion and Expectationsmentioning

confidence: 99%

Effects of sediment geochemical properties on heavy metal bioavailability

Zhang

Zeng

et al. 2014

Environment International

660

206

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“…Here we are particularly interested in the separation of organic anions. Among reported MOFs, there are comparatively few permanently porous MOFs with positive framework (P-MOFs) 6,36,37 , whose rarity is also mirrored in other types of porous materials, including zeolites [38][39][40][41][42][43][44][45] . In addition, known P-MOFs often have low stability or small pore size that only permits the exchange of small inorganic anions 7,10 .…”

mentioning

confidence: 99%

Selective anion exchange with nanogated isoreticular positive metal-organic frameworks

et al. 2013

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Crystalline porous materials, especially inorganic porous solids such as zeolites, usually have negative frameworks with extra-framework mobile cations and are widely used for cation exchange. It is highly desirable to develop new materials with positive frameworks for selective anion exchange and separation or storage and delivery. Recent advances in metalorganic framework synthesis have created new opportunities in this direction. Here we report the synthesis of a series of positive indium metal-organic frameworks and their utilization as a platform for the anion exchange-based separation process. This process is capable of size-or charge-selective ion-exchange of organic dyes and may form the basis for size-selective ion chromatography. Ion-exchange dynamics of a series of organic dyes and their selective encapsulation and release are also studied, highlighting the advantages of metal-organic framework compositions for designing host materials tailored for applications in anion separation and purification.

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“…Unlike silica aerogel, the carbon aerogel is an electrical conductor, which is called the aero-capacitor and characterized as an “electrochemical double capacitor with high power density and high energy density” [22]. After entering the 21st century, research on aerogels was booming with new types of aerogels emerging, such as non-silica aerogels [23,24,25,26], chalcogenide aerogels [27,28,29,30,31], gradient aerogels and other aerogel composites [32,33,34,35,36,37,38,39,40]. More recently, novel aerogels such as carbon nanotube (CNT) aerogels [41,42,43,44,45,46], graphene aerogels [47,48,49,50,51], silicon aerogels and carbide or carbonitride aerogels [52,53,54,55] were continually added into the aerogel community.…”

Section: Introductionmentioning

confidence: 99%

Polymer/Carbon-Based Hybrid Aerogels: Preparation, Properties and Applications

et al. 2015

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Aerogels are synthetic porous materials derived from sol-gel materials in which the liquid component has been replaced with gas to leave intact solid nanostructures without pore collapse. Recently, aerogels based on natural or synthetic polymers, called polymer or organic aerogels, have been widely explored due to their porous structures and unique properties, such as high specific surface area, low density, low thermal conductivity and dielectric constant. This paper gives a comprehensive review about the most recent progresses in preparation, structures and properties of polymer and their derived carbon-based aerogels, as well as their potential applications in various fields including energy storage, adsorption, thermal insulation and flame retardancy. To facilitate further research and development, the technical challenges are discussed, and several future research directions are also suggested in this review.

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Ion-Exchangeable Cobalt Polysulfide Chalcogel

Cited by 54 publications

References 25 publications

Effects of sediment geochemical properties on heavy metal bioavailability

Effects of sediment geochemical properties on heavy metal bioavailability

Selective anion exchange with nanogated isoreticular positive metal-organic frameworks

Polymer/Carbon-Based Hybrid Aerogels: Preparation, Properties and Applications

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