氢气储存
材料科学
化学工程
纳米颗粒
多孔性
吸附
氢
镁
复合数
催化作用
碳纳米管
锂(药物)
纳米技术
复合材料
化学
有机化学
合金
吸附
冶金
内分泌学
工程类
医学
作者
Hui Liang,Dandan Chen,Damien Thiry,Wenjiang Li,Minfang Chen,Rony Snyders
标识
DOI:10.1016/j.ijhydene.2019.04.212
摘要
High-energy density and low cost magnesium nanoparticles (Mg NPs)-based material are being sought to meet increasing capable of hydrogen (H2) storage demand. Here, a kind of air-stable Mg NPs supported on porous structured multi-walled carbon tubes-polymethyl methacrylate (MWCNTs-PMMA) template is prepared owing to reversible well-distributed, dispersed and small-sized Mg/MgH2 NPs. The aim is to improve the H2 storage capacity, hydrogen sorption kinetics and thermodynamics of nano Mg-based system without using catalyst. The organic Mg precursor was directly in-situ reduced to metallic Mg NPs in MWCNTs-PMMA template by lithium naphthalide. The size distribution of reduced Mg nanoparticles is around 3.6 ± 0.2 nm, confirmed by XRD and TEM analyses, which is due to the strong interaction between Mg NPs and MWCNTs-PMMA via PMMA binding Mg2+, as well as the confinement of porous template hindered the growth and agglomeration of Mg NPs. Moreover, except H2, O2 and H2O molecules can't infiltrate the porous structure of MWCNTs-PMMA resulted in the presence of air stable Mg NPs in the MWCNTs-PMMA. The work provides a new scope to prepare nano metal-based composite for H2 storage.
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