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Metallic and highly conducting two-dimensional atomic arrays of sulfur enabled by molybdenum disulfide nanotemplate

npj Computational Materials 2017年第1期3卷 115-122页

作者： Shuze Zhu Xiumei Geng Yang Han Mourad Benamara Liao Chen Jingxiao Li Ismail Bilgin Hongli Zhu Department of Chemical Engineering Massachusetts Institute of TechnologyCambridgeMA 02139USA Department of Mechanical and Industrial Engineering Northeastern UniversityBostonMA 02115USA Institute for Nanoscale Materials Science and Engineering University of ArkansasFayettevilleAR 72701USA Department of Physics Northeastern UniversityBostonMA 02115USA

Element sulfur in nature is an insulating solid.While it has been tested that one-dimensional sulfur chain is metallic and conducting,the investigation on two-dimensional sulfur remains elusive.We report that molybdenum disulfide layers are able to serve as the nanotemplate to facilitate the formation of two-dimensional sulfur.Density functional theory calculations suggest that confined inbetween layers of molybdenum disulfide,sulfur atoms are able to form two-dimensional triangular arrays that are highly metallic.As a result,these arrays contribute to the high conductivity and metallic phase of the hybrid structures of molybdenum disulfide layers and two-dimensional sulfur arrays.The experimentally measured conductivity of such hybrid structures reaches up to 223 S/m.Multiple experimental results,including X-ray photoelectron spectroscopy(XPS),transition electron microscope(TEM),selected area electron diffraction(SAED),agree with the computational insights.Due to the excellent conductivity,the current density is linearly proportional to the scan rate until 30,000 mV s^(−1) without the attendance of conductive additives.Using such hybrid structures as electrode,the two-electrode supercapacitor cells yield a power density of 10^(6) Wh kg^(−1) and energy density ~47.5 Wh kg^(−1) in ionic liquid electrolytes.Our findings offer new insights into using two-dimensional materials and their Van der Waals heterostructures as nanotemplates to pattern foreign atoms for unprecedented material properties.

关键词： molybdenum sulfur dimensional

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sulfur-Induced Copper Deficiency in the Yaks

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Agricultural Sciences in China 2009年第8期8卷 1000-1003页

作者： SHEN Xiao-yun Department of Biology Chongqing University of Science and Technology Chongqing 401331 PR. China Key Laboratory of Animal Ecology and Conservation Biology Institute of Zoology Chinese Academy of Sciences Beijing 100101P.R. China

Since the 1990s, yak in the Haizi area in China has been affected by an ailment characterized by pica, emaciation, dyskinesia, and anemia. To determine the cause of disease, the mineral composition of soil and forages, and samples of blood, hair, and liver of yaks from the Haizi area in China were determined. The concentrations of copper in soil and forage from affected ranches and unaffected areas are within the normal ranges. The mean concentration of copper in blood and liver from the affected yaks was （0.31±0.03） and （13.7±3.1）μg·g^-1 respectively, compared with （0.98±0.16） and （95.6±11.2）μg·g^-1 for unaffected yaks. The concentrations of sulfur in soil and forage from affected ranches were （1.91±0.26） and （1.37±0.17）%, respectively, compared with （1.11±0.31） and （0.52±0.18）% （dry matter） for normal areas. The contents of sulfur in blood and liver affected animals were （7.32±1.8） and （2.54±3.1）%, respectively, compared with （4.22±0.73） and （1.31±0.33）% （in fresh and soft tissues） for healthy animals, respectively. Oral administration of tribasic copper chloride prevented and cured the disease. Thus it is reasonable to conclude that ailments of yaks in the Haizi area are probably caused by a secondary copper deficiency, mainly due to high sulfur content in soil and forage.

关键词： yak sulfur copper nutrition disease

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Origin of a native sulfur chimney in the Kueishantao hydrothermal field, offshore northeast Taiwan

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Science China Earth Sciences 2007年第11期50卷 1746-1753页

作者： ZENG ZhiGang1, LIU ChangHua1,2, CHEN ChenTung A3, YIN XueBo1, CHEN DaiGeng1,2, WANG XiaoYuan1,2, WANG XiaoMei1,2 & ZHANG GuoLiang1,2 1 Seafloor Hydrothermal Activity Laboratory of the Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China 2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China 3 Institute of Marine Geology and Chemistry, National Sun Yat-Sen University, Kaohsiung 804, Taiwan, China Seafloor Hydrothermal Activity Laboratory of the Key Laboratory of Marine Geology and Environment Institute of Oceanology Chinese Academy of Sciences Qingdao China Graduate University of Chinese Academy of Sciences Beijing China Institute of Marine Geology and Chemistry National Sun Yat-Sen University Kaohsiung China

Analyses of rare earth and trace element concentrations of native sulfur samples from the Kueishantao hydrothermal field were performed at the Seafloor Hydrothermal Activity Laboratory of the Key Labo-ratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences. Using an Elan DRC II ICP-MS, and combining the sulfur isotopic compositions of native sulfur samples, we studied the sources and formation of a native sulfur chimney. The results show, when comparing them with native sulfur from crater lakes and other volcanic areas, that the native sulfur content of this chimney is very high (99.96%), the rare earth element (REE) and trace element constituents of the chimney are very low (ΣREEsulfur samples are similar to those of the Kueishantao andesite, implying that the interaction of subseafloor fluid-andesite at the Kueishantao hydrothermal field was of short duration. The sulfur isotopic compo-sitions of the native sulfur samples reveal that the sulfur of the chimney, from H2S and SO2, originated by magmatic degassing and that the REEs and trace elements are mostly from the Kueishantao ande-site and partly from seawater. Combining these results with an analysis of the thermodynamics, it is clear that from the relatively low temperature (sulfur chimney in the Kueishantao hydrothermal field.

关键词： origin,native sulfur chimney,Kueishantao hydrothermal field,northeast Taiwan

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High energy batteries based on sulfur cathode

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Green Energy & Environment 2019年第4期4卷 345-359页

作者： Jian Zhu Jianli Zou Hua Cheng Yingying Gu Zhouguang Lu Department of Materials Science&Engineering Southern University of Science and TechnologyShenzhen518055GuangdongPR China College of Chemistry and Chemical Engineering Central South UniversityChangsha 410083HunanPR China

Lithium-ion batteries(LIBs)have become an indispensable part of our daily life,however,the energy and power capability that LIBs can deliver are lagging far behind the ever-increasing demands of portable electronics and electric vehicles.Metal-sulfur batteries as one of the most promising alternatives to LIBs are receiving rapidly growing research interests due to the extremely high energy density and abundant resources of sulfur.In this short review,we will discuss the state-of-art development of high energy density battery technologies based on sulfur cathode in combination with different metal anodes,with focus on sodium,magnesium and aluminum anodes.We leave lithium-sulfur batteries out of discussion since there are already a large number of nicely organized review papers available.The operation mechanism of various anode materials and the variety of electrolytes used in sulfur batteries will be reviewed.Some perspectives on improving the performances and overcoming the remaining issues in sulfur batteries will be discussed.It is expected that this review will draw more attention to sulfur batteries from both the academic and industrial communities.

关键词： Metal-sulfur battery sulfur cathode Electrolytes Energy storage Shuttle effect

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Timing and Source of the Hermyingyi W-Sn Deposit in Southern Myanmar, SE Asia: Evidence from Molybdenite Re-Os Age and sulfur Isotopic Composition

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Journal of Earth Science 2019年第1期30卷 70-79页

作者： Hai Jiang Shao-Yong Jiang Wenqian Li Kuidong Zhao State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Faculty of Earth Resources Collaborative Innovation Center for Exploration of Strategic Mineral Resources China University of Geosciences Key Laboratory of Mineralogy and Metallogeny Guangzhou Institute of Geochemistry Chinese Academy of Sciences

The Hermyingyi W-Sn deposit, situated in southern Myanmar, SE Asia, is a typical quartz-vein type W-Sn deposit. The ore-bearing quartz veins are mainly hosted by the Hermyingyi monzogranite which intruded into the Carboniferous metasedimentary rocks of Mergui Series. According to mineral assemblages and crosscutting relationships, four ore-forming stages are recognized:(1) silicate-oxide stage;(2) quartz-sulfide stage;(3) barren quartz vein stage;(4) supergene stage. Five molybdenite samples from the deposit yield Re-Os model ages ranging from 67.8±1.6 to 69.2±1.6 Ma(weighted mean age of 68.7±1.2 Ma), and a well-defined isochron age of 68.4±2.5 Ma(MSWD=0.18, 2σ). This Re-Os age is consistent with the previously published zircon U-Pb age of the Hermyingyi monzogranite(70.0±0.4 Ma)(MSWD=0.9, 2σ) within errors, which indicates a genetic link between the monzogranitic magmatism and W-Sn mineralization. The new high-precision geochronological data reveal that the granitic magmatism and associated W-Sn mineralization in southern Myanmar took place during the Late Cretaceous(70–68 Ma). The extremely low Re contents(22.9 ppb to 299 ppb) in molybdenite, coupled with sulfide δ^(34)S values in the range of +1.9‰ to +5.6‰ suggest that ore-forming metals were predominately sourced from the crustal-derived granitic magma.

关键词： Hermyingyi W-Sn deposit molybdenite Re-Os dating sulfur isotopes Myanmar SE Asia

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Comparison of Carbon, Nitrogen, and sulfur in Coastal Wetlands Dominated by Native and Invasive Plants in the Yancheng National Nature Reserve, China

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Chinese Geographical Science 2020年第2期30卷 202-216页

作者： WAN Siang LIU Xingtu MOU Xiaojie ZHAO Yongqiang Northeast Institute of Geography and Agroecology Chinese Academy of SciencesChangchun 130102China University of Chinese Academy of Sciences Beijing 100049China Administration of Yancheng National Natural Reserve Yancheng 224002China

The rapid invasion of the plant Spartina alterniflora in coastal wetland areas can threaten the capacity of their soils to store carbon(C),nitrogen(N),and sulfur(S).In this study,we investigated the spatial and temporal distribution patterns of C,N and S of both soil and(native and invasive)plants in four typical coastal wetlands in the core area of the Yancheng National Nature Reserve,China.The results show that the invasive S.alterniflora greatly influenced soil properties and increased soil C,N and S storage capacity:the stock(mean±standard error)of soil organic carbon(SOC,(3.56±0.36)kg/m^3),total nitrogen(TN,(0.43±0.02)kg/m^3),and total sulfur(TS,(0.69±0.11)kg/m^3)in the S.alterniflora marsh exceeded those in the adjacent bare mudflat,Suaeda salsa marsh,and Phragmites australis marsh.Because of its greater biomass,plant C((1193.7±133.6)g/m^2),N((18.8±2.4)g/m^2),and S((9.4±1.5)g/m^2)storage of S.alterniflora was also larger than those of co-occurring native plants.More biogenic elements circulated in the soil-plant system of the S.alterniflora marsh,and their spatial and temporal distribution patterns were also changed by the S.alterniflora invasion.Soil properties changed by S.alterniflora’s invasion thereby indirectly affected the accumulation of soil C,N and S in this wetland ecosystem.The SOC,TN,and TS contents were positively correlated with soil electrical conductivity and moisture,but negatively correlated with the pH and bulk density of soil.Together,these results indicate that S.alterniflora invasion altered ecosystem processes,resulted in changes in net primary production and litter decomposition,and increased the soil C,N and S storage capacity in the invaded ecosystems in comparison to those with native tallgrass communities in the coastal wetlands of East China.

关键词： coastal wetland plant invasion Spartina alterniflora soil carbon soil nitrogen soil sulfur

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Coupled trace element and SIMS sulfur isotope geochemistry of sedimentary pyrite:Implications on pyrite growth of Caixiashan Pb-Zn deposit

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Geoscience Frontiers 2019年第6期10卷 2177-2188页

作者： Dengfeng Li Huayong Chen Xiaoming Sun Yu Fu Qiaofen Liu Xiaoping Xia Qing Yang School of Marine Sciences Sun Yat-sen UniversityGuangzhou510006China Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering Guangzhou510006China Key Laboratory of Mineralogy and Metallogeny Chinese Academy of SciencesGuangzhou510640China School of Earth Science and Engineering Sun Yat-sen UniversityGuangzhou510275China State Key Laboratory of Isotope Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou510604China

Colloform pyrite with core-rim texture is commonly deposited in carbonate platforms associated with the sulfide ores such as the Caixiashan Pb-Zn deposit.However,the genesis of colloform pyrite in Pb-Zn deposits,its growth controls and their geological implication are insufficiently understood.Integration of in-situ trace element and SIMS sulfur isotopes has revealed geochemical variations among these pyrite layers.These colloform pyrite occur as residual phases of core-rim aggregates,the cores are made up of very fine-grained anhedral pyrite particles,with some rims being made up of fine-grained and poorlycrystallized pyrite,while the other rims were featured with euhedral cubic pyrite.which are cemented by fine-grained calcite and/or dolomite with minor quartz.sulfur isotope analysis shows that some wellpreserved rims have negative δ^34 S values(-28.12‰to-0.49‰),whereas most of the cores and rims have positive δ^34 S values(>0 to+44.28‰;peak at+14.91‰).Integrating with the methane and sulfate were observed in previous fluid inclusion study,we suggest that the 34 S depleted rims were initially formed by bacteria sulfate reduction(BSR),whereas the positive δ^34 S values were resulted from the sulfate reduction driven by anaerobic methane oxidation(AOM).The well-developed authigenic pyrite and calcite may also support the reaction of AOM.Combined with petrographic observations,trace element composition of the colloform pyrite reveals the incorporation and precipitation behavior of those high abundance elements in the pyrite:Pb and Zn were present as mineral inclusion and likely precipitated before Fe,as supported by the time-resolved Pb-Zn signal spikes in most of the analyzed pyrite grains.Other metals,such as Hg,Co and Ni,may have migrated as chloride complexes and entered the pyrite lattice.Arsenic and Sb,generally influenced by complex-forming reactions rather than substitution ones,could also enter the pyrite lattice,or slightly predate the precipitation of colloform pyrite as mineral inclusions,which are con

关键词： Pyrite trace elements SIMS sulfur isotopes Colloform pyrite Bacteria sulfate reduction(BSR) Anaerobic methane oxidation(AOM)

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Interplay between nitric oxide and sulfur assimilation in salt tolerance in plants

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The Crop Journal 2016年第3期4卷 153-161页

作者： Mehar Fatma Asim Masood Tasir S.Per Faisal Rasheed Nafees A.Khan Plant Physiology Section Department of BotanyAligarh Muslim University

Nitric oxide(NO),a versatile molecule,plays multiple roles in plant growth and development and is a key signaling molecule in plant response to abiotic stress.Nutrient management strategy is critical for abiotic stress alleviation in plants.sulfur(S) is important under stress conditions,as its assimilatory products neutralize the imbalances in cells created by excessive generation of reactive oxygen species(ROS).NO abates the harmful effects of ROS by enhancing antioxidant enzymes,stimulating S assimilation,and reacting with other target molecules,and regulates the expression of various stress-responsive genes under salt stress.This review focuses on the role of NO and S in responses of plants to salt stress,and describes the crosstalk between NO and S assimilation in salt tolerance.The regulation of NO and/or S assimilation using molecular biology tools may help crops to withstand salinity stress.

关键词： Abiotic stress Antioxidant system Glutathione Plant hormones sulfur Signaling

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Heterogeneous reactions of sulfur dioxide on dust

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Science China Chemistry 2006年第3期49卷 273-280页

作者： GAO Yunchuan CHEN Dan Department of Environmental Engineering Shanghai Normal University Shanghai 200234 China Department of Environmental Engineering Shanghai Normal University Shanghai 200234 China

The source of urban atmospheric particles is broad, and the major source is the building dust from urban construction. Calcium is the tagged element and Portland cement is the major com- ponent of building dust. In this study, CaO was regarded as the representative oxide of building dust, and mixtures were synthesized in terms of the major element ingredients of building dust. The het- erogeneous uptake of SO2 on CaO, mixtures, Portland cement and building dust samples was inves- tigated. In situ FTIR and X-ray photoelectron spectroscopy (XPS) were used to identify the products of the reactions. In addition, the crystal phases and the surface properties of the samples were charac- terized by XRD patterns and BET specific surface area. The results show that in the presence of oxygen, sulfur dioxide can be adsorbed to sulfite and further catalytically oxidized to sulfate on the surface of CaO, the mixtures, Portland cement and building dust. The reactivity of SO2 on the surface of dust and oxides is basically a first order. The main ingredient of building dust sample is SiO2, and the one of Portland cement is Ca3SiO5.

关键词： sulfur dioxide, heterogeneous reaction, oxides, building dust, atmospheric aerosol, in situ FTIR.

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Synthesis,biological activities and 3D-QSAR studies of(R)-2-phenyl-4,5-dihydrothiazole-4-carboxamide derivatives containing a sulfur ether moiety

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Chinese Chemical Letters 2019年第3期30卷 668-671页

作者： Jingbo Liu Fengyun Li Yuanhong Wang Haoxuan Zhang Jingyue Dong Pengwei Sun Yuxin Li Zhengming Li College of Horticulture and Landscape Architecture Tianjin Agricultural University College of Chinese Materia Medica Tianjin University of Traditional Chinese Medicine State Key Laboratory of Elemento-Organic Chemistry Research Institute of Elemento-Organic Chemistry Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) College of Chemistry Nankai University

A series of(R)-2-phenyl-4,5-dihydrothiazole-4-carboxamide derivatives containing a sulfur ether moiety were synthesized and characterized on the basis of NMR and elemental analysis(EA). The crystal structure of(R)-N-(2-methyl-1-(methylthio)propan-2-yl)-2-(4-nitrophenyl)-4,5-dihydrothiazole-4-carboxamide(13 d) was determined to show R configuration. The bioasssy results indicated that most title compounds displayed good and broad spectrum antifungal activities against several phytopathogenic fungi. The structure activity relationships were discussed. Based on the antifungal activity of title compounds against Phytophthora capsici, a CoMSIA calculation was performed to establish a 3 D-QSAR model, which revealed that electrostatic and hydrophobic fields were the two most significant factors for antifungal activity. According to the established 3D-QSAR model, structure optimization was carried out to find(R)-N-((R)-1-(methylthio)propan-2-yl)-2-(p-tolyl)-4,5-dihydrothiazole-4-carboxamide(15 h)with excellent activity against Phytophthora capsici, thus emerging as a new lead compound for novel antiphytopathogenic fungus agent development.

关键词： (R)-2-Phenyl-4,5-dihydrothiazole-4- carboxamide sulfur ether Antifungal activity SARs CoMSIA model

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