Article(id=1322608958737592753, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322608929100649011, articleNumber=null, orderNo=null, doi=10.14062/j.issn.0454-5648.20190317, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1557763200000, receivedDateStr=2019-05-14, revisedDate=1562256000000, revisedDateStr=2019-07-05, acceptedDate=null, acceptedDateStr=null, onlineDate=1793264148648, onlineDateStr=2026-10-29, pubDate=1579449600000, pubDateStr=2020-01-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793264148648, onlineIssueDateStr=2026-10-29, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793264148648, creator=13701087609, updateTime=1793264148648, 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=1, endPage=7, ext={EN=ArticleExt(id=1322608959630979506, articleId=1322608958737592753, tenantId=1146029695717560320, journalId=1263187385517883426, language=EN, title=Electrospray Preparation and Microwave Absorption Properties of La3+-doped SnO2 Hollow Micro/nanospheres, columnId=null, journalTitle=Journal of the Chinese Ceramic Society, columnName=null, runingTitle=null, highlight=null, articleAbstract=

La3+-doped SnO2 hollow micro/nanospheres were prepared by electrospray and calcination techniques with lanthanum nitrate, stannous chloride and polyvinylpyrrolidone (PVP) as raw materials. The formation mechanism of hollow structure was analyzed. The crystalline phase and micromorphology of the samples were examined by thermal gravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). The microwave absorption properties of La3+-doped SnO2 were determined by a vector network analyzer. The results show that La3+-doped SnCl2/PVP precursor polymer appears smooth spheres with the diameters of 0.5-2.2 μm. The pure rutile structure of SnO2 forms at 600 ℃, and La3+ doping does not change the crystal structure. La3+-doped SnO2 micro/nanospheres appear to be a hollow structure, and the surfaces are made up of massive small particles. The optimum microwave absorption properties of La3+-doped SnO2 hollow micro/nanospheres with the matching thickness of 2 mm can be obtained when the doping ratio of La3+ is 0.6% (in mole). The minimum reflectivity can reach -29 dB at 11.1 GHz, and the frequency band with a reflectivity less than -10 dB is 10.0-13.0 GHz. When the doping ratio of La3+ is 0.6%, the minimum reflectivity of La3+-doped SnO2 hollow micro/nanospheres shifts to a low frequency as the matching thickness increases. The matching thickness is 4 mm at lower than 8 GHz, thus obtaining the optimum microwave absorption properties. The minimum reflectivity can reach -27 dB at 4.9 GHz, and the frequency band with a reflectivity less than -10 dB is 4.5-5.8 GHz.

, authors=Fang ZHAO, Sa ZHANG, Xiangjun TANG, Zhaogang CHENG, Kai HAN, authorsList=Fang ZHAO, Sa ZHANG, Xiangjun TANG, Zhaogang CHENG, Kai HAN, authorCompany=null, correspAuthors=null, authorNote=

ZHAO Fang (1982-), famale, Master, Associate Professor. E-mail:

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以硝酸镧、氯化亚锡和聚乙烯吡咯烷酮(PVP)为原料,采用电喷法结合后续高温煅烧技术制备了La3+掺杂SnO2中空微纳米球。通过热重分析仪、Fourier变换红外光谱仪、X射线衍射仪、扫描电子显微镜和矢量网络分析仪等手段对目标产物进行了表征,研究了SnO2微纳米球中空结构的形成机制及La3+掺杂对其物相、微观形貌和吸波性能的影响。研究表明:La3+掺杂SnCl2/PVP前驱体聚合物呈完整球形,表面光滑,球径分布在0.5~2.2 μm之间。经600 ℃煅烧后,均生成了单一金红石型SnO2,且La3+的加入未改变SnO2的晶体结构;煅烧后产物均为中空球状,球面由许多小颗粒堆积而成,表面粗糙不平。当匹配厚度为2 mm时,La3+掺杂比例为0.6%(摩尔分数)的产物的吸波效果最佳:最低反射率为-29 dB,对应的吸收频率为11.1 GHz,低于-10 dB的吸收频带为10.0~13.0 GHz;该掺杂比例的产物随匹配厚度增加,最低反射率向低频移动,在8 GHz以下的最佳匹配厚度为4 mm,在此厚度下吸波性能优良:最低反射率为-27 dB,对应的吸收频率为4.9 GHz,低于-10 dB的吸收频带为4.5~5.8 GHz。

, authors=赵芳, 张飒, 唐香珺, 程兆刚, 韩凯, authorsList=赵芳, 张飒, 唐香珺, 程兆刚, 韩凯, authorCompany=null, correspAuthors=null, authorNote=

赵芳(1982—),女,硕士,副教授。

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ZHAO Fang (1982-), famale, Master, Associate Professor. E-mail:

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赵芳(1982—),女,硕士,副教授。

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镧掺杂二氧化锡中空微纳米球的制备及吸波性能
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赵芳 , 张飒 , 唐香珺 , 程兆刚 , 韩凯
硅酸盐学报 | 2020,48(1): 1-7
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硅酸盐学报 | 2020 , 48 (1) : 1 -7
镧掺杂二氧化锡中空微纳米球的制备及吸波性能
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赵芳 , 张飒, 唐香珺, 程兆刚, 韩凯
作者信息
  • 陆军工程大学石家庄校区,石家庄 050003
作者简介:

赵芳(1982—),女,硕士,副教授。

Electrospray Preparation and Microwave Absorption Properties of La3+-doped SnO2 Hollow Micro/nanospheres
Fang ZHAO , Sa ZHANG, Xiangjun TANG, Zhaogang CHENG, Kai HAN
Affiliations
  • Shijiazhuang Campus of Army Engineering University, Shijiazhuang 050003, China
  • ZHAO Fang (1982-), famale, Master, Associate Professor. E-mail:

出版时间: 2020-01-20 doi: 10.14062/j.issn.0454-5648.20190317
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以硝酸镧、氯化亚锡和聚乙烯吡咯烷酮(PVP)为原料,采用电喷法结合后续高温煅烧技术制备了La3+掺杂SnO2中空微纳米球。通过热重分析仪、Fourier变换红外光谱仪、X射线衍射仪、扫描电子显微镜和矢量网络分析仪等手段对目标产物进行了表征,研究了SnO2微纳米球中空结构的形成机制及La3+掺杂对其物相、微观形貌和吸波性能的影响。研究表明:La3+掺杂SnCl2/PVP前驱体聚合物呈完整球形,表面光滑,球径分布在0.5~2.2 μm之间。经600 ℃煅烧后,均生成了单一金红石型SnO2,且La3+的加入未改变SnO2的晶体结构;煅烧后产物均为中空球状,球面由许多小颗粒堆积而成,表面粗糙不平。当匹配厚度为2 mm时,La3+掺杂比例为0.6%(摩尔分数)的产物的吸波效果最佳:最低反射率为-29 dB,对应的吸收频率为11.1 GHz,低于-10 dB的吸收频带为10.0~13.0 GHz;该掺杂比例的产物随匹配厚度增加,最低反射率向低频移动,在8 GHz以下的最佳匹配厚度为4 mm,在此厚度下吸波性能优良:最低反射率为-27 dB,对应的吸收频率为4.9 GHz,低于-10 dB的吸收频带为4.5~5.8 GHz。

镧掺杂  /  二氧化锡  /  电喷法  /  中空微纳米球  /  微波吸收性能

La3+-doped SnO2 hollow micro/nanospheres were prepared by electrospray and calcination techniques with lanthanum nitrate, stannous chloride and polyvinylpyrrolidone (PVP) as raw materials. The formation mechanism of hollow structure was analyzed. The crystalline phase and micromorphology of the samples were examined by thermal gravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). The microwave absorption properties of La3+-doped SnO2 were determined by a vector network analyzer. The results show that La3+-doped SnCl2/PVP precursor polymer appears smooth spheres with the diameters of 0.5-2.2 μm. The pure rutile structure of SnO2 forms at 600 ℃, and La3+ doping does not change the crystal structure. La3+-doped SnO2 micro/nanospheres appear to be a hollow structure, and the surfaces are made up of massive small particles. The optimum microwave absorption properties of La3+-doped SnO2 hollow micro/nanospheres with the matching thickness of 2 mm can be obtained when the doping ratio of La3+ is 0.6% (in mole). The minimum reflectivity can reach -29 dB at 11.1 GHz, and the frequency band with a reflectivity less than -10 dB is 10.0-13.0 GHz. When the doping ratio of La3+ is 0.6%, the minimum reflectivity of La3+-doped SnO2 hollow micro/nanospheres shifts to a low frequency as the matching thickness increases. The matching thickness is 4 mm at lower than 8 GHz, thus obtaining the optimum microwave absorption properties. The minimum reflectivity can reach -27 dB at 4.9 GHz, and the frequency band with a reflectivity less than -10 dB is 4.5-5.8 GHz.

lanthanum doping  /  stannic oxide  /  electrospray  /  hollow micro/nanospheres  /  microwave absorption property
赵芳, 张飒, 唐香珺, 程兆刚, 韩凯. 镧掺杂二氧化锡中空微纳米球的制备及吸波性能. 硅酸盐学报, 2020 , 48 (1) : 1 -7 . DOI: 10.14062/j.issn.0454-5648.20190317
Fang ZHAO, Sa ZHANG, Xiangjun TANG, Zhaogang CHENG, Kai HAN. Electrospray Preparation and Microwave Absorption Properties of La3+-doped SnO2 Hollow Micro/nanospheres[J]. Journal of the Chinese Ceramic Society, 2020 , 48 (1) : 1 -7 . DOI: 10.14062/j.issn.0454-5648.20190317
  • 河北省自然科学基金青年科学基金(E2015506011)
  • 陆军工程大学石家庄校区科研创新发展基金(KYSZJQZL1910)
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doi: 10.14062/j.issn.0454-5648.20190317
  • 接收时间:2019-05-14
  • 首发时间:2026-10-29
  • 出版时间:2020-01-20
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  • 收稿日期:2019-05-14
  • 修回日期:2019-07-05
基金
河北省自然科学基金青年科学基金(E2015506011)
陆军工程大学石家庄校区科研创新发展基金(KYSZJQZL1910)
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    陆军工程大学石家庄校区,石家庄 050003
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2种不同金属材料的力学参数
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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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