Article(id=1322608970120942310, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322608929100649011, articleNumber=null, orderNo=null, doi=10.14062/j.issn.0454-5648.20190127, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1551283200000, receivedDateStr=2019-02-28, revisedDate=1553184000000, revisedDateStr=2019-03-22, acceptedDate=null, acceptedDateStr=null, onlineDate=1793264151363, onlineDateStr=2026-10-29, pubDate=1579449600000, pubDateStr=2020-01-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793264151363, onlineIssueDateStr=2026-10-29, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793264151363, creator=13701087609, updateTime=1793264151363, updator=13701087609, issue=Issue{id=1322608929100649011, tenantId=1146029695717560320, journalId=1263187385517883426, year='2020', volume='48', issue='1', pageStart='1', pageEnd='146', issueExtLink='null', onlineDate='null', pubDate='1579449600000', pubDateStr='2020-01-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793264141583, creator='13701087609', updateTime=1793276771816, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322661904204542961, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322608929100649011, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322661904208737266, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322608929100649011, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=65, endPage=72, ext={EN=ArticleExt(id=1322608970657813223, articleId=1322608970120942310, tenantId=1146029695717560320, journalId=1263187385517883426, language=EN, title=Preparation and Compressive Elastic Moduli of Dendritic Mesoporous Silica Particles and Their Composites, columnId=null, journalTitle=Journal of the Chinese Ceramic Society, columnName=null, runingTitle=null, highlight=null, articleAbstract=

Dendritic-like mesoporous silica particles (DMS) were prepared via a developed oil-water biphase stratification approach using cetyltrimethylammonium bromide, tetraethoxysilane, triethanolamine, and n-hexane as starting materials. The ceria nanoparticles were grafted onto the DMS surfaces using cerium nitrate as a cerium source and hexamethylene tetramine as a precipitant, and core/shell structured DMS/CeO2 composites were obtained. The samples were characterized by scanning electron microscopy, transmission electron microscopy, low-angle X-ray diffraction, selected area electron diffraction, and nitrogen adsorption-desorption analysis. The elastic contact between an individual particle and a probe was evaluated by atomic force microscopy. The compressive elastic moduli of the DMS particles before and after ceria coating were calculated by fitting the force curves based on the Derjaguin-Müller-Toporov model. The results show that the DMS samples (ca. 92 nm in particle size) have central-radial three-dimensional mesopores with an average pore size of 6.9 nm. The average particle size of DMS/CeO2 is about 106 nm, and the thin layer of ceria nanoparticles (i.e., 5-8 nm) is uniformly coated onto the cores. The compressive modulus of DMS particles is (3.7±1.2)GPa, further revealing that an enlarged pore size contributs to the elastic response enhancement for mesoporous silica materials. The compressive modulus of DMS/CeO2 [i.e., (6.6±1.9)GPa] is much lower than that of bulk ceria materials, and much closed to that of DMS cores. The elastic response of DMS/CeO2 derives from the cores, and the coated ceria nanoparticles contributed to the surface hardness enhancement.

, authors=Ailian CHEN1, 2, Xiangyu MA3, Wanying WANG3, Wenjie CAI3, Yang CHEN3, authorsList=Ailian CHEN, Xiangyu MA, Wanying WANG, Wenjie CAI, Yang CHEN, authorCompany=null, correspAuthors=Yang CHEN, authorNote=

CHEN Ailian (1975-), female, Ph.D., Associate Professor. E-mail:

, correspAuthorsNote=
CHEN Yang (1978-), male, Ph.D., Associate Professor. E-mail:
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以正己烷、三乙醇胺、正硅酸乙酯和十六烷基三甲基溴化铵等为主要原料,采用改进的油水两相反应体系制备树枝状介孔氧化硅(DMS)颗粒;再以硝酸亚铈为铈源、六亚甲基四胺为缓释沉淀剂,在DMS表面均匀包覆CeO2纳米粒子,得到核壳结构DMS/CeO2复合颗粒。利用扫描电子显微镜、透射电子显微镜、小角度X射线衍射仪、选区电子衍射和氮气吸附-脱附等手段对样品进行结构表征。借助原子力显微镜力曲线技术,评价单个颗粒与探针之间的弹性接触,结合DMT模型拟合计算被测样品的压缩弹性模量。结果表明:DMS颗粒(约92 nm)内部存在中心三维树枝状介孔孔道,平均孔径约6.9 nm;复合颗粒的平均粒径约106 nm,CeO2纳米粒子(5~8 nm)在内核表面均匀包覆形成薄层。DMS颗粒的弹性模量为(3.7±1.2)GPa,对比发现增大孔径有助于介孔氧化硅弹性响应的提高。复合颗粒的模量(6.6±1.9)GPa显著低于CeO2块体材料,更接近于DMS内核,表明其弹性行为由内核所提供,壳层粒子可提高颗粒的整体表面硬度。

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陈爱莲(1975—),女,博士,副教授。

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陈杨(1978—),男,博士,副教授。
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树枝状介孔氧化硅及其复合颗粒的制备和压缩弹性模量
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陈爱莲 1, 2 , 马翔宇 3 , 王婉莹 3 , 蔡文杰 3 , 陈杨 3
硅酸盐学报 | 2020,48(1): 65-72
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硅酸盐学报 | 2020 , 48 (1) : 65 -72
树枝状介孔氧化硅及其复合颗粒的制备和压缩弹性模量
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陈爱莲1, 2 , 马翔宇3, 王婉莹3, 蔡文杰3, 陈杨3
作者信息
  • 1.常州大学机械工程学院,江苏 常州 213164
  • 2.江苏省绿色过程装备重点实验室,江苏 常州 213164
  • 3.常州大学材料科学与工程学院,江苏 常州 213164
通讯作者:
陈杨(1978—),男,博士,副教授。
作者简介:

陈爱莲(1975—),女,博士,副教授。

Preparation and Compressive Elastic Moduli of Dendritic Mesoporous Silica Particles and Their Composites
Ailian CHEN1, 2 , Xiangyu MA3, Wanying WANG3, Wenjie CAI3, Yang CHEN3
Affiliations
  • 1.School of Mechanical Engineering, Changzhou University, Changzhou 213164, Jiangsu, China
  • 2.Jiangsu Key Laboratory of Green Process Equipment, Changzhou 213164, Jiangsu, China
  • 3.School of Materials Science and Engineering, Changzhou University, Changzhou 213164, Jiangsu, China
  • Corresponding Author:
    CHEN Yang (1978-), male, Ph.D., Associate Professor. E-mail:

    CHEN Ailian (1975-), female, Ph.D., Associate Professor. E-mail:

出版时间: 2020-01-20 doi: 10.14062/j.issn.0454-5648.20190127
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以正己烷、三乙醇胺、正硅酸乙酯和十六烷基三甲基溴化铵等为主要原料,采用改进的油水两相反应体系制备树枝状介孔氧化硅(DMS)颗粒;再以硝酸亚铈为铈源、六亚甲基四胺为缓释沉淀剂,在DMS表面均匀包覆CeO2纳米粒子,得到核壳结构DMS/CeO2复合颗粒。利用扫描电子显微镜、透射电子显微镜、小角度X射线衍射仪、选区电子衍射和氮气吸附-脱附等手段对样品进行结构表征。借助原子力显微镜力曲线技术,评价单个颗粒与探针之间的弹性接触,结合DMT模型拟合计算被测样品的压缩弹性模量。结果表明:DMS颗粒(约92 nm)内部存在中心三维树枝状介孔孔道,平均孔径约6.9 nm;复合颗粒的平均粒径约106 nm,CeO2纳米粒子(5~8 nm)在内核表面均匀包覆形成薄层。DMS颗粒的弹性模量为(3.7±1.2)GPa,对比发现增大孔径有助于介孔氧化硅弹性响应的提高。复合颗粒的模量(6.6±1.9)GPa显著低于CeO2块体材料,更接近于DMS内核,表明其弹性行为由内核所提供,壳层粒子可提高颗粒的整体表面硬度。

树枝状介孔氧化硅  /  复合颗粒  /  核壳结构  /  压缩弹性模量  /  原子力显微镜

Dendritic-like mesoporous silica particles (DMS) were prepared via a developed oil-water biphase stratification approach using cetyltrimethylammonium bromide, tetraethoxysilane, triethanolamine, and n-hexane as starting materials. The ceria nanoparticles were grafted onto the DMS surfaces using cerium nitrate as a cerium source and hexamethylene tetramine as a precipitant, and core/shell structured DMS/CeO2 composites were obtained. The samples were characterized by scanning electron microscopy, transmission electron microscopy, low-angle X-ray diffraction, selected area electron diffraction, and nitrogen adsorption-desorption analysis. The elastic contact between an individual particle and a probe was evaluated by atomic force microscopy. The compressive elastic moduli of the DMS particles before and after ceria coating were calculated by fitting the force curves based on the Derjaguin-Müller-Toporov model. The results show that the DMS samples (ca. 92 nm in particle size) have central-radial three-dimensional mesopores with an average pore size of 6.9 nm. The average particle size of DMS/CeO2 is about 106 nm, and the thin layer of ceria nanoparticles (i.e., 5-8 nm) is uniformly coated onto the cores. The compressive modulus of DMS particles is (3.7±1.2)GPa, further revealing that an enlarged pore size contributs to the elastic response enhancement for mesoporous silica materials. The compressive modulus of DMS/CeO2 [i.e., (6.6±1.9)GPa] is much lower than that of bulk ceria materials, and much closed to that of DMS cores. The elastic response of DMS/CeO2 derives from the cores, and the coated ceria nanoparticles contributed to the surface hardness enhancement.

dendritic-like mesoporous silica  /  composite particle  /  core/shell structure  /  compressive elastic modulus  /  atomic force microscopy
陈爱莲, 马翔宇, 王婉莹, 蔡文杰, 陈杨. 树枝状介孔氧化硅及其复合颗粒的制备和压缩弹性模量. 硅酸盐学报, 2020 , 48 (1) : 65 -72 . DOI: 10.14062/j.issn.0454-5648.20190127
Ailian CHEN, Xiangyu MA, Wanying WANG, Wenjie CAI, Yang CHEN. Preparation and Compressive Elastic Moduli of Dendritic Mesoporous Silica Particles and Their Composites[J]. Journal of the Chinese Ceramic Society, 2020 , 48 (1) : 65 -72 . DOI: 10.14062/j.issn.0454-5648.20190127
  • 国家自然科学基金(51405038; 51575058; 51875052)
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2020年第48卷第1期
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doi: 10.14062/j.issn.0454-5648.20190127
  • 接收时间:2019-02-28
  • 首发时间:2026-10-29
  • 出版时间:2020-01-20
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  • 收稿日期:2019-02-28
  • 修回日期:2019-03-22
基金
国家自然科学基金(51405038; 51575058; 51875052)
作者信息
    1.常州大学机械工程学院,江苏 常州 213164
    2.江苏省绿色过程装备重点实验室,江苏 常州 213164
    3.常州大学材料科学与工程学院,江苏 常州 213164

通讯作者:

陈杨(1978—),男,博士,副教授。
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https://castjournals.cast.org.cn/joweb/gsyxb/CN/10.14062/j.issn.0454-5648.20190127
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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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