Applied Clay Science最新文献

{"title":"Synthesis of zeolites from different kaolin deposits worldwide","authors":"Abdulsalami S. Kovo ,&nbsp;Stuart M. Holmes ,&nbsp;Carlos A. Rios ,&nbsp;Abdulrazak J. Otaru ,&nbsp;Ambali S. Abdulkareem ,&nbsp;Victoria C. Eluwa","doi":"10.1016/j.clay.2025.107757","DOIUrl":"10.1016/j.clay.2025.107757","url":null,"abstract":"<div><div>The present study examines advancements in the synthesis of various zeolites utilizing non-conventional sources, with a particular emphasis on kaolinite deposits sourced from diverse regions globally. The study compares the suitability of kaolinite deposits from different geographical locations for zeolite synthesis and investigates the reaction conditions conducive for their formation. Notably, the study underscores the successful synthesis of zeolites from kaolin deposits worldwide, highlighting the importance of leveraging resources to mitigate the nation's reliance on imported zeolites. The paper also examines various types of zeolites developed from kaolinite in previous years, with particular emphasis on recent reports and key synthesis factors such as the SiO₂/Al₂O₃ molar ratio, metakaolinization parameters, aging conditions, alkalinity, and crystallization conditions. The analysis incorporates the most up-to-date research on kaolinite-based zeolites published to date, with a brief discussion on the evolution of zeolites.</div></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"269 ","pages":"Article 107757"},"PeriodicalIF":5.3,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143464612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation, characterization, and antibacterial activity of Moringa oleifera‑silver nanoparticles-kaolinite nanocomposite","authors":"Mustapha Isah ,&nbsp;Nik Ahmad Nizam Nik Malek ,&nbsp;Hendra Susanto ,&nbsp;Muhammad Hariz Asraf ,&nbsp;Abdurrahman Sani Aliero","doi":"10.1016/j.clay.2025.107761","DOIUrl":"10.1016/j.clay.2025.107761","url":null,"abstract":"<div><div>Although extensive research has been conducted on the synthesis of silver nanoparticles (AgNPs) using <em>Moringa oleifera</em> leaf extract for various applications, the synthesis and antibacterial efficacy of <em>M. oleifera</em>-synthesized AgNPs immobilized onto a kaolinite carrier remains unexplored. This study introduces the formulation of a novel <em>Moringa oleifera</em> (Mo)-Silver Nanoparticle (AgNP)-Kaolinite nanocomposite (Mo-Ag-Kao) synthesized through the green method. The nanocomposite was developed by incorporating biosynthesized AgNPs into kaolinite to enhance its stability and antimicrobial efficacy. The nanocomposite was characterized using various analytical techniques, including X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), thermogravimetric-differential thermal analysis (TGA-DTA), and zeta potential analysis. The characterization results revealed the successful incorporation of spherical AgNPs that were synthesized using <em>M. oleifera</em> extract onto kaolinite, with an average particle size of 20 nm. Additionally, the kaolinite structure still remained in the Mo-Ag-Kao nanocomposite, and it demonstrated high thermal stability (up to 700 °C). The nanocomposite showed strong antibacterial properties against a broad spectrum of bacterial strains, including Gram-positive <em>Staphylococcus aureus</em> and Gram-negative <em>Escherichia coli</em>. In conclusion, the use of kaolinite as a carrier for AgNPs not only prevents nanoparticle aggregation but also enhances its antibacterial efficacy.</div></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"269 ","pages":"Article 107761"},"PeriodicalIF":5.3,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143452923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modified natural mineral with a biogenic compound to control microbial growth in waterborne paint","authors":"Leyanet Barberia-Roque ,&nbsp;Guillermo P. Lopez ,&nbsp;Erasmo Gámez-Espinosa ,&nbsp;Katerine Igal ,&nbsp;Mariela A. Fernández ,&nbsp;Cecilia Deyá ,&nbsp;Natalia Bellotti","doi":"10.1016/j.clay.2025.107758","DOIUrl":"10.1016/j.clay.2025.107758","url":null,"abstract":"<div><div>Hygienic paints are designed to control microbial growth by imparting antimicrobial activity both in-film and in-can. Biogenic compounds like terpenes in essential oils (EOs) have potential antimicrobial properties. Additionally, modified montmorillonites (Mt) show promise as nanoscale carriers for these compounds. This research aimed to obtain a functionalized antimicrobial montmorillonite hybrid to be applied in the formulation of bioactive paints. The biogenic compounds evaluated were the essential oils of white thyme and mint, to be applied for the first time in hygienic coatings. A soybean derivative was used as an organic modifier of the clay mineral. The synthesized hybrids were characterized by Fourier-Transform Infrared (FTIR) spectroscopy, X-ray diffraction (XRD), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and energy dispersive spectrometer (EDS). Bioassays were carried out against fungal strains including <em>Cladosporium cladosporioides</em>, <em>Chaetomium globosum</em>, and <em>Aspergillus versicolor</em>, as well as bacterial strains such as <em>Staphylococcus aureus</em> and <em>Escherichia coli</em>. White thyme was the EO with the higher antimicrobial activity. Added to this, white thyme oil managed to impart its antimicrobial activity to the synthesized hybrid. The formulated paints with 0.75 concentration of pigment per volume (PVC) efficiently prevented in-can pollution.</div></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"269 ","pages":"Article 107758"},"PeriodicalIF":5.3,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143437964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Near-infrared as a swift method to quantify dioctahedral smectite content in bentonite","authors":"Faisal A. Gread ,&nbsp;Valéria Kureková ,&nbsp;Ángel Santamaría-López ,&nbsp;Marek Osacký ,&nbsp;Peter Uhlík","doi":"10.1016/j.clay.2025.107748","DOIUrl":"10.1016/j.clay.2025.107748","url":null,"abstract":"<div><div>Near-infrared spectroscopy is one of the fastest available analytical methods, and it is susceptible to clay minerals in the studied samples or terrains, making it potentially valuable for quantifying clay minerals' content. Nevertheless, its practical applicability for this task needs to be rigorously tested. In this study, we sought to evaluate its effectiveness by retrieving the smectite quantity from controlled binary, ternary, and polymineralic mixtures with common bentonitic components based on the measured spectra using the linear spectral unmixing technique. Encouragingly, the results were auspicious, with an average deviation of (15 % for quartz, and ∼ 7 % for feldspar) binary mixtures, ∼7 % for ternary mixtures, and ∼ 3 % of the actual values for polymineralic mixtures. Combining multiple parameters from different absorption features in the unmixing model provided greater statistical independence. These parameters were selected based on their statistical significance. Stepwise regression indicated that the most dependent parameters regarding smectite content are related to the 2.20 μm (4530 cm⁻¹) absorption feature, these findings support the previous studies which utilized the OH vibration region for smectite quantification. The developed automated unmixing model offers several benefits for quantification: it is fast, straightforward, and neither requires complex sample preparation nor the development of a comprehensive standard library or dataset.</div></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"269 ","pages":"Article 107748"},"PeriodicalIF":5.3,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabrication and characterization electrospun clinoptilolite filled polylactic acid composite membrane: purification of multiple impurities from water","authors":"Seniyecan Kahraman ,&nbsp;Ayşenur Katırcı ,&nbsp;Ayşe Aytaç ,&nbsp;Sevil Veli ,&nbsp;Filiz Uğur Nigiz","doi":"10.1016/j.clay.2025.107756","DOIUrl":"10.1016/j.clay.2025.107756","url":null,"abstract":"<div><div>In this study, electrospun clinoptilolite (Clp)- polylactic acid (PLA) nanocomposite membranes were produced and used for dyestuff (methylene blue, MB), oil (soybean oil), microplastic (Polyamide 66, PA66), and Linear Alkyl Benzene Sulfonate (LAS) rejection from simulated gray water. The membrane's physical, chemical, thermal, morphological, mechanical, and antimicrobial properties were investigated regarding Clp incorporation. According to the characterization results, the empirical porosity of the membrane was found to be between 79 % and 83 %. The PLA membrane's water uptake capacity, surface hydrophilicity, and mechanical strength were improved with Clp incorporation. All membranes show antimicrobial effects against both gram-positive and negative bacteria. According to the filtration test results, MB separation was above 90 %. The highest oil rejection was found to be 87.84 % using 4 wt% Clp loaded membrane. All membranes rejected 100 % of microplastic. 66.6 % of LAS rejection was achieved with 3 wt% Clp loaded membrane. All separation and characterization results show that Clp-doped PLA membranes have the potential to be used as a filtration membrane that can simultaneously separate all impurities from water.</div></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"268 ","pages":"Article 107756"},"PeriodicalIF":5.3,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143422142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tuning the synthesis of aluminosilicates to enhance metal cation uptake for heavy metal immobilization","authors":"Alina Gawel ,&nbsp;Patrick Diehl ,&nbsp;Sven Westheimer ,&nbsp;Sarah Sühnholz ,&nbsp;Marc Greuel","doi":"10.1016/j.clay.2025.107728","DOIUrl":"10.1016/j.clay.2025.107728","url":null,"abstract":"<div><div>Many aluminosilicates are characterized by a pronounced ability to bind heavy metals from aqueous solutions. This work demonstrates the great potential and adaptability of clay materials for use in the emerging field of <em>in-situ</em> groundwater remediation of heavy metals. The synthesis of aluminosilicates was adapted to achieve the highest possible uptake affinity and capacity for Co²⁺, Cu²⁺ and Ni²⁺. This optimization enabled maximum loadings of up to 1.1 mol Me²⁺ kg⁻¹ and <em>K</em>_D values well above 3000 L kg⁻¹. Elevated temperatures during synthesis or drying lead to reduced uptake affinity for metals, <em>e.g.</em>, by the factor of 3 for Ni²⁺ when changing drying temperature from 100 °C to room temperature. On the one hand, metal uptake takes place <em>via</em> interaction with variable surface charges, which is strongly pH-dependent and more pronounced for Cu²⁺. On the other hand, there is also a certain degree of interaction with permanent surface charges through isomorphous substitution leading to more stable bonds. Individual experiments showed comparable uptake of the various metals with 0.6 mol kg⁻¹ at pH 3 up to 1.1 mol kg⁻¹ at pH 5. However, Ni²⁺ was preferably taken up in direct competition with the other metals. Thanks to the simple low-temperature synthesis, the high metal loadings and robust metal uptake achieved even at low pH, amorphous aluminosilicates represent a valuable alternative to other products for heavy metal removal from aqueous solution. Future research should focus on their interaction with different metals simultaneously and metal uptake in flow-through systems.</div></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"268 ","pages":"Article 107728"},"PeriodicalIF":5.3,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143422143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rheology of aqueous suspensions of montmorillonite/ gum arabic /electrolyte","authors":"Fatou Guey ,&nbsp;Ousseynou M'bodj ,&nbsp;Aliou Barry ,&nbsp;Albert Magnin","doi":"10.1016/j.clay.2025.107745","DOIUrl":"10.1016/j.clay.2025.107745","url":null,"abstract":"<div><div>The rheological properties of purified Na-montmorillonite (Na-MTp)-Water-NaCl- Gum arabic (GA) mixture have been investigated. Montmorillonite and the GA from the south of Mauritania were purified and characterized by several physical and chemical methods: X-ray fluorescence (XRF), X-ray diffraction (XRD), infrared spectroscopy (IR), scanning electron microscopy (SEM), and size exclusion chromatography (SEC). The results showed that both the plastic and elastic parameters increased with the clay fraction. The sol-gel transition was detected at the volume fraction between 0.012 and 0.016. These two parameters increased with the amount of NaCl added, at low NaCl concentrations, due to the decrease in the double layer thickness, before the system collapsed at NaCl concentrations above 20 mmol. L⁻¹. In the presence of GA, the variation of the yield stress and the elastic modulus shows a progressive reduction of both parameters as the amount of gum increased<strong>.</strong> The order of mixing of the different components used is also studied. The results of the MTp-NaCl-GA mixture, called the first order of the mixture, shows that the yield stress and the elastic modulus decreased as the concentration of NaCl increases. The MTp-GA-NaCl mixture, called the second order of the mixture, shows that the yield stress and the elastic modulus increased progressively with the increase in NaCl concentration. The connection between physicochemical interactions and the observed behaviors is detailed.</div></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"268 ","pages":"Article 107745"},"PeriodicalIF":5.3,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143422141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Consequences of the calcination on the morphological, structural, optical, and catalytic properties of CuMgFe-layered double hydroxide for photo-fenton degradation","authors":"Nayara de Melo Costa Serge ,&nbsp;Rosembergue Gabriel Lima Gonçalves ,&nbsp;Karla Virgínia Leite Lima ,&nbsp;York Estewin Serge Correales ,&nbsp;João Maurício Beghetto Tomaz de Aquino ,&nbsp;Rogéria Rocha Gonçalves ,&nbsp;Peter Hammer ,&nbsp;Raquel Fernandes Pupo Nogueira","doi":"10.1016/j.clay.2025.107740","DOIUrl":"10.1016/j.clay.2025.107740","url":null,"abstract":"<div><div>This study explored the influence of calcination on Layered Double Hydroxides (LDH) applied as catalyst in Fenton and photo-Fenton processes evaluated during sulfamethoxazole (SMX) degradation. According to the findings, CuMgFe-layered double hydroxide underwent significant structural, optical, and catalytic transformations following thermal treatment at 400 °C and 650 °C. X-ray Diffraction (XRD) and X-ray Photoelectron Spectroscopy (XPS) analyses showed the formation of pure cuprous delafossites and cupric spinels. The use of the CuMgFe-layered double hydroxide treated at 400 °C and CuMgFe-layered double hydroxide treated at 650 °C in the Fenton process caused an increase in the solution pH, which subsequently inhibited the degradation of SMX, in contrast to LDH without calcination. CuMgFe-layered double hydroxide treated at 400 °C achieved 13 % and 18 % SMX degradation in Fenton and photo-Fenton reaction, while CuMgFe-layered double hydroxide treated at 650 °C resulted in 18 % and 29 %, respectively. Compared to LDH without calcination (26 % and 36 %), the lower degradation values of calcined catalysts were found to be significantly influenced by the pH increase of the suspensions (9.0–9.6). Despite the reduced SMX removal, calcined LDH exhibited intriguing structural and optical modifications, suggesting potential applications beyond degradation processes.</div></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"268 ","pages":"Article 107740"},"PeriodicalIF":5.3,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143387437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of on stereoisomers of lactic acids on microbially-mediated reductive dissolution of clay minerals: Insights from DFT and experimental studies","authors":"Jingjie Yang ,&nbsp;Liang Bian ,&nbsp;Aiqin Wang ,&nbsp;Xiaofeng Zhao ,&nbsp;Jianan Nie ,&nbsp;Temirlan Arslanov ,&nbsp;Bin Mu ,&nbsp;Hailiang Dong ,&nbsp;Mianxin Song ,&nbsp;Li Zeng ,&nbsp;Peng Liu ,&nbsp;Xiaobin Gu","doi":"10.1016/j.clay.2025.107725","DOIUrl":"10.1016/j.clay.2025.107725","url":null,"abstract":"<div><div>Interactions between microorganisms and clay minerals occur ubiquitously in nature. It has been established that various factors can affect the interactions between microorganisms and clay minerals, such as temperature, pressure, pH, surface area and electron shuttle compounds. Lactic acid has two stereoisomer forms (L-(+)-lactic acid (L-(+)-lac) and D-(−)-lactic (D-(−)-lac)) and has widely been recognized as an important biomolecule that can be utilized as an electronic donor and/or carbon source by dissimilatory iron-reducing bacteria. Furthermore, lactic acid (endogenous or exogenous) has been shown to result in the dissolution of metal impurities from clay minerals. However, the synergistic effect of different lactic acid stereoisomers on abiotic processes (clay mineral dissolution) and biotic processes (microbial reduction) remains unclear, as well as the fundamental principles governing this process. To examine the differences between the effects of both stereoisomers of lactic acid on the interactions between microorganisms and clay minerals, experiments on microbially mobilized elements in clay mineral dissolution (MMED) were carried out in the presence of either L-(+)-lac or D-(−)-lac. Experimental results showed that the interdependence between coupled abiotic and biotic processes, created a synergy between these processes. Furthermore, to investigate the molecular or atomic level interactions, such as electrostatic charges and bond formation, that occur during the attachment of L-(+)-lac and D-(−)-lac onto mineral surfaces. Molecular dynamics (MD) simulations were used to distinguish between the adsorption pathways of L-(+)-lac and D-(−)-lac on clay minerals. The results of density functional theory (DFT) calculations indicated that the presence of lactic acid affected the electron distribution profile of clay mineral templates. The finding of this study provide insights into the role of lactic acid stereoisomers in promoting mineral-microbe interactrions.</div></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"268 ","pages":"Article 107725"},"PeriodicalIF":5.3,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143387435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clay/GO asymmetric bilayer membrane with temperature and concentration dual-responsivity for enhanced ion transport properties","authors":"Nengwei Li ,&nbsp;Kang Cheng ,&nbsp;Yiwei Dong,&nbsp;Mingda Hu,&nbsp;Zhihong Yang,&nbsp;Jianmei Xu,&nbsp;Wei Zhou,&nbsp;Jian Sun","doi":"10.1016/j.clay.2025.107722","DOIUrl":"10.1016/j.clay.2025.107722","url":null,"abstract":"<div><div>The controllable ion transport in the membranes has attracted significant interest for water treatment, molecular sieving, energy storage and harvesting because of the molecular/ion sieving and selectivity of the nanofluidic channels. Here, we selected Li-exchanged montmorillonite (Mt) to prepare montmorillonite/graphene oxide (Mt/GO) bilayer membranes with two-dimensional (2D) nanofluidic channels and studied the ion transport across the nanofluidic membrane under the external stimuli of temperature and concentration. It is interesting that the ion transport is affected by the orientation of Mt./GO bilayer membrane between two electrolyte cells. The bilayer membrane with GO layer facing higher concentration electrolytes shows much higher ionic conductance than that with Mt. layer facing higher concentration electrolytes, also higher than Mt./GO homogenous monolayer membrane. The diffuse current, membrane potential and output power of the bilayer membrane are affected by the external temperature and electrolyte concentration, showing good thermoelectric conversion and abnormal temperature dependence. These asymmetric bilayer membranes with the integration of the cost-effective clay and high ion-selective GO show many advantages such as low cost, facile fabrication and high ion-transport performance. This work provides a new idea for designing clay based nanofluidic membrane for creating smart high-efficient membranes.</div></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"268 ","pages":"Article 107722"},"PeriodicalIF":5.3,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143387436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}