Article(id=1322942686377947282, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322942634976752425, articleNumber=null, orderNo=null, doi=10.14062/j.issn.0454-5648.20210134, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1613491200000, receivedDateStr=2021-02-17, revisedDate=1614960000000, revisedDateStr=2021-03-06, acceptedDate=null, acceptedDateStr=null, onlineDate=1793343715518, onlineDateStr=2026-10-30, pubDate=1626710400000, pubDateStr=2021-07-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793343715518, onlineIssueDateStr=2026-10-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793343715518, creator=13701087609, updateTime=1793343715518, updator=13701087609, issue=Issue{id=1322942634976752425, tenantId=1146029695717560320, journalId=1263187385517883426, year='2021', volume='49', issue='7', pageStart='1249', pageEnd='1518', issueExtLink='null', onlineDate='null', pubDate='1626710400000', pubDateStr='2021-07-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793343703264, creator='13701087609', updateTime=1793345819416, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322951510828659213, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322942634976752425, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322951510828659214, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322942634976752425, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=1420, endPage=1428, ext={EN=ArticleExt(id=1322942686591856787, articleId=1322942686377947282, tenantId=1146029695717560320, journalId=1263187385517883426, language=EN, title=Effect of Layer Charge Density on the Exfoliation of Montmorillonite to Prepare Two-Dimensional Nanosheets, columnId=1322942641213682516, journalTitle=Journal of the Chinese Ceramic Society, columnName=Special Issue on Mineral Material, runingTitle=null, highlight=null, articleAbstract=

Two typical montmorillonite samples, with layer charge densities of 0.342 and 0.439, measured by using alkylammonium method, were selected in this study. The effects of layer charge density on the two-dimensional (2D) exfoliation of montmorillonite and the surface electrical properties of the nanosheets after exfoliation were studied. The mechanisms of the exfoliation and hydration swelling ability of montmorillonite were explained using molecular dynamics simulation. It was found that montmorillonite with relatively low layer charge density exhibited stronger hydration and swelling ability and thus was easier to be exfoliated into 2D nanosheets. The exfoliated 2D nanosheets from the montmorillonite with higher layer charge density had larger electronegativity per unit area. The lower layer charge density of montmorillonite, the weaker adsorption of water molecules on the surface of montmorillonite crystal layer, the stronger interlayer cation hydration and greater hydration swelling ability, could be used to explain the fact that the montmorillonite with low layer charge density was more easily exfoliated into 2D nanosheets.

, authors=Renbo GAO1, 2, Yunliang ZHAO1, 2, Licai CHEN1, 2, Tingting ZHANG3, Haoyu BAI1, 2, Shaoxian SONG1, 2, authorsList=Renbo GAO, Yunliang ZHAO, Licai CHEN, Tingting ZHANG, Haoyu BAI, Shaoxian SONG, authorCompany=null, correspAuthors=Yunliang ZHAO, authorNote=

GAO Renbo(1997-), male, Master candidate. E-mail:

, correspAuthorsNote=
ZHAO Yunliang(1987-), male, Ph.D., Professor. E-mail:
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以2种典型不同层电荷密度的蒙脱石为研究对象,通过烷基铵法测定了2种蒙脱石的层电荷密度,分别为0.342和0.439。研究了层电荷密度对蒙脱石二维剥离及其剥离后纳米片表面电性的影响。通过分子动力学模拟解释了层电荷密度对蒙脱石剥离二维纳米片和水化膨胀能力的影响机理。结果表明:层电荷密度低的蒙脱石具有更好的水化膨胀能力,更易剥离制备二维纳米片。层电荷密度高的蒙脱石剥离的二维纳米片单位面积的电负性更大。蒙脱石层电荷密度越低,其晶层表面对水分子吸附作用越弱,层间阳离子水化能力更强,水化膨胀能力大,也解释了层电荷密度低的蒙脱石更易剥离成二维纳米片的原因。

, authors=高仁波1, 2, 赵云良1, 2, 陈立才1, 2, 张婷婷3, 白皓宇1, 2, 宋少先1, 2, authorsList=高仁波, 赵云良, 陈立才, 张婷婷, 白皓宇, 宋少先, authorCompany=null, correspAuthors=赵云良, authorNote=

高仁波(1997—),男,硕士研究生。

, correspAuthorsNote=
赵云良(1987—),男,博士,教授。
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蒙脱石层电荷密度对其二维纳米片剥离的影响
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高仁波 1, 2 , 赵云良 1, 2 , 陈立才 1, 2 , 张婷婷 3 , 白皓宇 1, 2 , 宋少先 1, 2
硅酸盐学报 | 矿物材料专题 2021,49(7): 1420-1428
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硅酸盐学报 |矿物材料专题 2021 , 49 (7) : 1420 -1428
蒙脱石层电荷密度对其二维纳米片剥离的影响
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高仁波1, 2 , 赵云良1, 2 , 陈立才1, 2, 张婷婷3, 白皓宇1, 2, 宋少先1, 2
作者信息
  • 1.武汉理工大学矿物资源加工与环境湖北省重点实验室,武汉 430070
  • 2.武汉理工大学资源与环境工程学院,武汉 430070
  • 3.武汉轻工大学化学与环境工程学院,武汉 430023
通讯作者:
赵云良(1987—),男,博士,教授。
作者简介:

高仁波(1997—),男,硕士研究生。

Effect of Layer Charge Density on the Exfoliation of Montmorillonite to Prepare Two-Dimensional Nanosheets
Renbo GAO1, 2 , Yunliang ZHAO1, 2 , Licai CHEN1, 2, Tingting ZHANG3, Haoyu BAI1, 2, Shaoxian SONG1, 2
Affiliations
  • 1.Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Wuhan 430070, China
  • 2.School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
  • 3.School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, China
  • Corresponding Author:
    ZHAO Yunliang(1987-), male, Ph.D., Professor. E-mail:

    GAO Renbo(1997-), male, Master candidate. E-mail:

出版时间: 2021-07-20 doi: 10.14062/j.issn.0454-5648.20210134
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以2种典型不同层电荷密度的蒙脱石为研究对象,通过烷基铵法测定了2种蒙脱石的层电荷密度,分别为0.342和0.439。研究了层电荷密度对蒙脱石二维剥离及其剥离后纳米片表面电性的影响。通过分子动力学模拟解释了层电荷密度对蒙脱石剥离二维纳米片和水化膨胀能力的影响机理。结果表明:层电荷密度低的蒙脱石具有更好的水化膨胀能力,更易剥离制备二维纳米片。层电荷密度高的蒙脱石剥离的二维纳米片单位面积的电负性更大。蒙脱石层电荷密度越低,其晶层表面对水分子吸附作用越弱,层间阳离子水化能力更强,水化膨胀能力大,也解释了层电荷密度低的蒙脱石更易剥离成二维纳米片的原因。

蒙脱石  /  层电荷密度  /  剥离  /  二维纳米片  /  分子动力学模拟

Two typical montmorillonite samples, with layer charge densities of 0.342 and 0.439, measured by using alkylammonium method, were selected in this study. The effects of layer charge density on the two-dimensional (2D) exfoliation of montmorillonite and the surface electrical properties of the nanosheets after exfoliation were studied. The mechanisms of the exfoliation and hydration swelling ability of montmorillonite were explained using molecular dynamics simulation. It was found that montmorillonite with relatively low layer charge density exhibited stronger hydration and swelling ability and thus was easier to be exfoliated into 2D nanosheets. The exfoliated 2D nanosheets from the montmorillonite with higher layer charge density had larger electronegativity per unit area. The lower layer charge density of montmorillonite, the weaker adsorption of water molecules on the surface of montmorillonite crystal layer, the stronger interlayer cation hydration and greater hydration swelling ability, could be used to explain the fact that the montmorillonite with low layer charge density was more easily exfoliated into 2D nanosheets.

montmorillonite  /  layer charge density  /  exfoliation  /  2D nanosheets  /  molecular dynamics simulation
高仁波, 赵云良, 陈立才, 张婷婷, 白皓宇, 宋少先. 蒙脱石层电荷密度对其二维纳米片剥离的影响. 硅酸盐学报, 2021 , 49 (7) : 1420 -1428 . DOI: 10.14062/j.issn.0454-5648.20210134
Renbo GAO, Yunliang ZHAO, Licai CHEN, Tingting ZHANG, Haoyu BAI, Shaoxian SONG. Effect of Layer Charge Density on the Exfoliation of Montmorillonite to Prepare Two-Dimensional Nanosheets[J]. Journal of the Chinese Ceramic Society, 2021 , 49 (7) : 1420 -1428 . DOI: 10.14062/j.issn.0454-5648.20210134
  • 国家自然科学基金(51874220; 51904215)
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2021年第49卷第7期
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doi: 10.14062/j.issn.0454-5648.20210134
  • 接收时间:2021-02-17
  • 首发时间:2026-10-30
  • 出版时间:2021-07-20
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  • 收稿日期:2021-02-17
  • 修回日期:2021-03-06
基金
国家自然科学基金(51874220; 51904215)
作者信息
    1.武汉理工大学矿物资源加工与环境湖北省重点实验室,武汉 430070
    2.武汉理工大学资源与环境工程学院,武汉 430070
    3.武汉轻工大学化学与环境工程学院,武汉 430023

通讯作者:

赵云良(1987—),男,博士,教授。
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2种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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