高等学校化学学报 ›› 2019, Vol. 40 ›› Issue (2): 216-223.doi: 10.7503/cjcu20180429

• 无机化学 • 上一篇    下一篇

氮化硼纳米管-纳米片分级结构的制备及光学和吸附特性

吉钰纯1, 毛文慧1, 廖和杰1, 王吉林1(), 龙飞1, 谷云乐2()   

  1. 1. 桂林理工大学材料科学与工程学院, 有色金属及材料加工新技术教育部重点实验室, 广西有色金属隐伏矿床勘查及材料开发协同创新中心, 桂林 541004
    2. 武汉工程大学材料科学与工程学院, 武汉 430205
  • 收稿日期:2018-06-12 出版日期:2019-02-10 发布日期:2018-12-28
  • 作者简介:

    联系人简介: 王吉林, 男, 博士, 讲师, 主要从事无机化学合成纳米功能材料及其器件组装评测方面的研究. E-mail: jilinwang@glut.edu.cn; 谷云乐, 男, 博士, 教授, 主要从事新型无机功能材料的制备及应用方面的研究. E-mail: ncm@wit.edu.cn

  • 基金资助:
    国家自然科学基金(批准号: 51741204)、 广西自然科学基金(批准号: 2016GXNSFBA380155)、 广西中青年教师基础能力提升项目(批准号: KY2016YB187, 2018KY0256)和广西特聘专家基金(批准号: 2015B017)资助

Boron Nitride Nanotube-nanosheet Hierarchical Structures andIts Optical/adsorption Properties

JI Yuchun1, MAO Wenhui1, LIAO Hejie1, WANG Jilin1,*(), LONG Fei1, GU Yunle2,*()   

  1. 1. School of Materials Science and Engineering, Key Laboratory of Nonferrous Materials and New Processing Technology of Ministry of Education, Collaborative Innovation Center for Exploration of Hidden Nonferrous Metal Deposits and Development of New Materials in Guangxi, Guilin University of Technology, Guilin 541004, China
    2. School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, China
  • Received:2018-06-12 Online:2019-02-10 Published:2018-12-28
  • Contact: WANG Jilin,GU Yunle E-mail:jilinwang@glut.edu.cn;ncm@wit.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.51741204), the Guangxi Natural Science Foundation, China(No.2016GXNSFBA380155), the Project of Improving the Basic Ability of Young and Middle-aged University Teachers in Guangxi, China(Nos.KY2016YB187, 2018KY0256) and the Guangxi Distinguished Experts Special Fund, China(No.2015B017)

摘要:

将五硼酸铵、 氨硼烷络合物和氧化镁混合, 球磨均匀后, 在1200 ℃及0.6 L/min流动氨气保护条件下退火6 h, 即可在氧化铝基片上收集到白色毛状产物. 采用X射线衍射(XRD), 红外光谱(FTIR)、 扫描电子显微镜(SEM)、 透射电子显微镜(TEM)、 拉曼光谱(Raman)、 紫外-可见吸收光谱(UV-Vis)和荧光光谱(PL)对产物进行了表征. 结果表明, 样品呈一维线状分级结构, 长度大于5 mm, 中间为竹节状空心结构, 内部管径为50~350 nm, 外径范围为200~800 nm. 分级结构表面负载了大量氮化硼(BN)纳米薄片, 单个薄片厚度约为13 nm. 薄片弯曲褶皱, 相互交织, 构成1个氮化硼片层, 其厚度约为50~200 nm. UV-Vis和PL光谱测试结果表明, 氮化硼纳米管(BNNT)分级结构在紫外光材料领域具有一定的应用潜力, 且对亚甲基蓝具有良好的吸附能力(7 min即可吸附71%, 107 min时可吸附96%). 对比实验结果表明, BNNT的生长机理遵循气-液-固相(VLS)模型, 而表面负载的超薄BN片的生长机理遵循气-固相(VS)模型.

关键词: 氮化硼纳米管, 氮化硼纳米薄片, 分级结构, 光学性能, 吸附性能

Abstract:

Ammonium pentaborate, ammonia borane and magnesium oxide powder were ball milled and then heated at 1200 ℃ for 12 min in the atmosphere of 50 mL/min ammonia gas. And the white flocculent product was collected on the surface of the alumina substrate. The experimental results indicated that the samples revealed one-dimensional linear hierarchical structures with an average length of more than 5 mm and the outsider diameter of 200—800 nm. And the middle of the hierarchical structure was bamboo-like hollow structure with the inner diameter of 50—350 nm. In addition, abundant BN nanosheets loaded on the surface of the BNNT hierarchical structure and the thickness of single nanosheet was about 13 nm. Lots of nanosheets bended, folded and interweave together to form BN layer with the thickness of 50—200 nm. Besides, UV-Vis and PL analysis demonstrated that the as-synthesized BNNT hierarchical structures could be used in the field of ultraviolet light materials. The BNNT hierarchical structures also presented excellent adsorption property for methylene blue(MB). When the adsorption time was 7 min, MB was removed by 71% from water solution. The adsorption rate increased to 96% when the adsorption time was 107 min. Finally, the comparison experiment indicated that the growth mechanism of BNNT followed the vapour-liquid-solid(VLS) model, but the growth mechanism of the surface-loaded BN nanosheet belonged to vapour-solid(VS) model.

Key words: Boron nitride nanotubes, Boron nitride nanosheets, Hierarchical structure, Optical property, Adsorption property

中图分类号: