Characterization and the hydrogen storage capacity of titania-coated electrospun boron nitride nanofibers

被引：23
作者：
Shahgaldi, Samaneh [1 ]
Yaakob, Zahira [1 ,2 ]
Khadem, Dariush Jafar [1 ]
Daud, Wan Ramli Wan [1 ,2 ]
机构：
[1] Univ Kebangsaan Malaysia, Fuel Cell Inst, Ukm Bangi 43600, Selangor, Malaysia
[2] Univ Kebangsaan Malaysia, Dept Chem & Proc Engn, Ukm Bangi 43600, Selangor, Malaysia
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2012年 / 37卷 / 15期
关键词：
Boron nitride; Nanofibers; Hydrogen storage; Electrospinning; CARBON NANOFIBERS; NANOTUBES; NANOMATERIALS; CATALYSTS;
D O I：
10.1016/j.ijhydene.2012.03.144
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In the present work, titania-coated (TiO2) boron nitride nanofibers were produced by the electrospinning method, and the effect of heat treatment on the nanofibers was studied. Electrospinning method is often adopted for the synthesis of one-dimensional nanofibers due to high productivity, simplicity, and cost-effectiveness. In this study, boric oxide was deposited on co-electrospun polyacrylonitrile and TiO2. TiO2-coated boron nitride nanofibers, with a diameter of 100 nm, were obtained after heat treatment and nitridation. The effects of heat treatment on the morphology, surface area and hydrogen storage capacity were studied extensively. Scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), and transmission electron microscopy (TEM) showed long, bead-free nanofibers and the presence of TiO2 nanoparticles on the nanofibers. X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy depicted hexagonal structures of boron nitride. The hydrogen uptake capacities of the nanofibers were investigated by pressure composition isotherm (PCI) in the pressure range of 1-70 bar at room temperature. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：11237 / 11243
页数：7
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