埃洛石纳米管模板法一步法制备一维碳纳米管/碳纳米棒混合纳米碳材料  

Halloysite Nanotubes-Templated One-Step Preparation for Carbon Nanotubes/Carbon Nanorods Mixed Carbon Nanomaterials

作　　者：程志林[1] 曹宝冲 刘赞[1] CHENG Zhi-Lin;CAO Bao-Chong;LIU Zan(School of Chemistry and Chemical Engineering,Yangzhou University,Yangzhou,Jiangsu 225002,China)

机构地区：[1]扬州大学化学化工学院,扬州225002

出　　处：《无机化学学报》2018年第10期1808-1816,共9页Chinese Journal of Inorganic Chemistry

基　　金：江苏省产学研合作-前瞻性联合研究项目(No.BY2016069-02);扬州市重点研发计划-社会发展(No.YZ2016072)资助项目

摘　　要：利用埃洛石纳米管(HNTs)特有的中空纳米结构,以及丰富的界面化学性质,以聚乙烯醇(PVA)为碳源,采用浸渍填充纳米孔方法实现了一步制备一维碳纳米管(CNTs)/碳纳米棒(CNRs)混合纳米碳材料。考察模板剂(HNTs)和碳源(PVA)之间的比例关系对混合纳米碳材料的结构影响,利用XRD、FTIR、Raman、N2吸附-脱附测试、TEM、SEM以及电阻率和分散性等表征手段分析混合纳米碳材料的结构变化。结果发现,PVA填充含量的增加将导致产物中CNRs的质量分数增加;当PVA和HNTs质量之比为1∶1时,所制备的CNTs/CNRs的孔体积达到最大值2.142 cm^3·g-1,比表面积达到583 m^2·g-1,并且表现出较好的电导率和分散性,表明低的PVA填充比例制备的混合碳材料中CNTs含量较高。This work developed a novel approach to prepare the CNTs/CNRs mixed nanomaterials by nanocasting method with tuning HNTs/PVA proportion,which employed HNTs as template and PVA as carbon source.We explored the effect of HNTs/PVA proportion on the structure of the mixed carbon nanomaterials.A series of characterizations,such as XRD,FTIR,Raman,N2 adsorption-desorption,TEM,SEM,resistivity and dispersibility,were used to determine the structure of the CNTs/CNRs mixed nanomaterials.The results found that PVA nanocasting content in the hollow nanostructure of HNTs affected the increase of CNRs in the CNTs/CNRs mixed nanomaterials.Upon the mass proportion of PVA/HNTs up to 1∶1,the pore volume of the CNTs/CNRs mixed nanomaterials approached to the maximum of 2.142 cm3·g^-1 and the specific surface area was up to 583 m2·g^-1,and definitely showed a better conductivity and dispersibility,demonstrating that a lower PVA nanocasting content in HNTs could fulfilled a higher CNTs content in the CNTs/CNRs mixed nanomaterials.

关 键 词：多孔碳 纳米技术 埃洛石 硬模板 

分 类 号：TB32[一般工业技术—材料科学与工程]