| 微波水热时间对BiVO4微晶相组成及显微结构的影响 |
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| 引用本文： | 黄剑锋,孟岩,曹丽云,吴建鹏. 微波水热时间对BiVO4微晶相组成及显微结构的影响[J]. 陕西科技大学学报, 2012, 0(3): 38-40 |
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| 作者姓名： | 黄剑锋 孟岩 曹丽云 吴建鹏 |
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| 作者单位： | 陕西科技大学教育部轻化工助剂化学与技术重点实验室 |
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| 基金项目： | 陕西省自然科学基金(2010JM6001);陕西省教育厅专项项目(2010JK444);陕西省国际科技合作重点项目(2011KW-11);陕西科技大学研究生创新基金资助项目 |
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| 摘 要： | 以NH4VO3和Bi(NO3)3.5H2O等为起始原料,采用微波水热法可控制备了BiVO4微晶。利用X-射线衍射仪(XRD)、扫面电子显微镜(SEM)分别对产物的物相和形貌进行了表征.结果表明:在微波水热条件下,反应温度160℃时,反应30min即可制备纯的单斜相Bi-VO4微晶.随着反应时间的延长,产物由四方相向单斜相逐渐转变,产物的结晶性逐渐提高,同时由棒状微晶逐渐变成为球状微晶.
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| 关 键 词： | 微波水热法 BiVO4 微晶 |
Influences of reaction time on the phase and microstructure of BiVO4 microcrystallites prepared by microwave hydrothermal method |
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| HUANG Jian-feng,MENG Yan,CAO Li-yun,WU Jian-peng. Influences of reaction time on the phase and microstructure of BiVO4 microcrystallites prepared by microwave hydrothermal method[J]. Journal of Shaanxi University of Science & Technology(Natural Science Edition), 2012, 0(3): 38-40 |
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| Authors: | HUANG Jian-feng MENG Yan CAO Li-yun WU Jian-peng |
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| Affiliation: | (Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry,Ministry of Education,Shaanxi University of Science & Technology,Xi′an 710021,China) |
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| Abstract: | BiVO4 microcrystallines with controllable morphologies were prepared by microwave hydrothermal method using NH4VO3 and Bi(NO3)3·5H2O as raw materials.The phase and morphology of as-prepared samples were characterized by X-Ray Diffraction(XRD),Scanning Electron Microscope(SEM).Results indicate that the pure monoclinic BiVO4 microcrystallites can be obtained by a microwave hydrothermal method at 160 ℃ within 30 minutes.As the reaction time increases,the crystallinity of products were found increasing with phase transition from Tetragonal to monoclinic BiVO4 structure.Correspondingly,the rod-like morphology changes to spherical structure as the hydrothermal time increasing. |
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| Keywords: | microwave hydrothermal method BiVO4 Microcrystallites |
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