硼酸镁一维纳米材料的制备和表征

doi:10.3724/SP.J.1077.2010.00947

无机材料学报 ›› 2010, Vol. 25 ›› Issue (9): 947-951.DOI: 10.3724/SP.J.1077.2010.00947 CSTR: 32189.14.SP.J.1077.2010.00947

硼酸镁一维纳米材料的制备和表征

李天保, 梁建, 许并社, 王进

(太原理工大学材料科学与工程学院, 太原 030024)

收稿日期:2010-01-11 修回日期:2010-03-05 出版日期:2010-09-20 网络出版日期:2010-08-25

Preparation and Characteristic of One-dimensional Magnesium Borate Nanomaterials

LI Tian-Bao, LIANG Jian, XU Bing-She, WANG Jin

(College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China)

Received:2010-01-11 Revised:2010-03-05 Published:2010-09-20 Online:2010-08-25

摘要/Abstract

摘要：

采用了溶剂热法(水和乙醇做溶剂)合成出了物相和形貌可控的一维硼酸镁纳米棒. 研究结果表明, 在溶剂的超临界状态下, 无需表面活性剂的参与, 能直接合成出一维硼酸镁纳米棒. 通过对不同反应阶段生成产物的XRD结构分析, 表明Mg₂B₂O₅结构的形成经历了从Mg(OH)₂到MgBO₂(OH)的转变; 通过对相应阶段生成产物的SEM观察, 表明Mg₂B₂O₅纳米棒的形貌经历了从片状到短柱状再到棒状的演变. 分析认为Mg₂B₂O₅纳米棒的形成遵循着形核→溶解→各向异性生长→再结晶的过程.

关键词: 硼酸镁, 纳米材料, 溶剂热法

Abstract:

Single-crystalline magnesium borate nanorods were fabricated by solvothermal method at the supercritical conditions. This reaction condition enabled the formation of magnesium borate with one dimensional nanostructure without the involvement of surfactants. The microstructures of as-synthesized products prepared at different reaction stages were characterized by X-ray diffraction. The results show that Mg₂B₂O₅ structure is obtained through an intermediate transition from Mg(OH)₂ to MgBO₂(OH), and then from MgBO₂(OH) to Mg₂B₂O₅. The morphology of the products at corresponding stages were observed by scanning electron microscope(SEM), showing that the formation process of Mg₂B₂O₅ nanorods was from flake-like to short columnar and then to rod. The result suggests that the formation of Mg₂B₂O₅nanorods follow a process from nucleation → dissolution → anisotropic growing → recrystallization.

Key words: magnesium borate, nanomaterial, solvothermal method

中图分类号:

TB35

李天保, 梁建, 许并社, 王进. 硼酸镁一维纳米材料的制备和表征[J]. 无机材料学报, 2010, 25(9): 947-951.

LI Tian-Bao, LIANG Jian, XU Bing-She, WANG Jin. Preparation and Characteristic of One-dimensional Magnesium Borate Nanomaterials[J]. Journal of Inorganic Materials, 2010, 25(9): 947-951.

参考文献

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硼酸镁一维纳米材料的制备和表征

Preparation and Characteristic of One-dimensional Magnesium Borate Nanomaterials

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