Preparation and magnetic properties of MWCNTs grafted hollow-HI

Tingkai Zhao; Hongyan Zhang; Ruoxing Zhu; Jungao Wang; Shengfei She; Zhengguang Guo; Xing Zhao; Tiehu Li

Preparation and magnetic properties of MWCNTs grafted hollow-HI

Tingkai Zhao, Hongyan Zhang, Ruoxing Zhu, Jungao Wang, Shengfei She, Zhengguang Guo, Xing Zhao, Tiehu Li

材料学院

Northwestern Polytechnical University Xian

科研成果: 期刊稿件 › 文章 › 同行评审

1 引用（Scopus）

摘要

The hydroxy-iron powder with a hollow structure (h-hydroxy-iron, h-HI) was prepared using a pitting method, and then hollow-HI coated with MWCNTs (MWCNTs@h-HI) were prepared by connecting h-HI and MWCNTs with PABA as the active grafting agent. XRD, SEM, TEM and Lakeshore7307VSM were used to characterize the as-prepared products; hydroxy-iron powder, hollow HI and MWCNTs@HI were also characterized as comparisons. The results show that the hydroxy-iron powder can be prepared and grafted with MWCNTs. The best pitting time is 15 min, when the yield of h-HI is the largest, the wall thickness of h-HI particles with 2 μm in diameter is 200 nm, and the thickness of the grafting layer 150 nm. The saturation magnetization (M_s) of MWCNTs@h-HI is 140.88 (A·m²)·kg^-1, the remanence (M_r) 1.4808 (A·m²)·kg^-1 and the coercivity (H_c) 4.742×10^-3 T.

源语言	英语
页（从-至）	2165-2168
页数	4
期刊	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
卷	45
期	8
出版状态	已出版 - 1 8月 2016

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title = "Preparation and magnetic properties of MWCNTs grafted hollow-HI",

abstract = "The hydroxy-iron powder with a hollow structure (h-hydroxy-iron, h-HI) was prepared using a pitting method, and then hollow-HI coated with MWCNTs (MWCNTs@h-HI) were prepared by connecting h-HI and MWCNTs with PABA as the active grafting agent. XRD, SEM, TEM and Lakeshore7307VSM were used to characterize the as-prepared products; hydroxy-iron powder, hollow HI and MWCNTs@HI were also characterized as comparisons. The results show that the hydroxy-iron powder can be prepared and grafted with MWCNTs. The best pitting time is 15 min, when the yield of h-HI is the largest, the wall thickness of h-HI particles with 2 μm in diameter is 200 nm, and the thickness of the grafting layer 150 nm. The saturation magnetization (Ms) of MWCNTs@h-HI is 140.88 (A·m2)·kg-1, the remanence (Mr) 1.4808 (A·m2)·kg-1 and the coercivity (Hc) 4.742×10-3 T.",

keywords = "Carbon nanotubes, Hydroxy-iron (HI), Magnetic performance, Pitting method",

author = "Tingkai Zhao and Hongyan Zhang and Ruoxing Zhu and Jungao Wang and Shengfei She and Zhengguang Guo and Xing Zhao and Tiehu Li",

year = "2016",

month = aug,

day = "1",

language = "英语",

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pages = "2165--2168",

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TY - JOUR

T1 - Preparation and magnetic properties of MWCNTs grafted hollow-HI

AU - Zhao, Tingkai

AU - Zhang, Hongyan

AU - Zhu, Ruoxing

AU - Wang, Jungao

AU - She, Shengfei

AU - Guo, Zhengguang

AU - Zhao, Xing

AU - Li, Tiehu

PY - 2016/8/1

Y1 - 2016/8/1

N2 - The hydroxy-iron powder with a hollow structure (h-hydroxy-iron, h-HI) was prepared using a pitting method, and then hollow-HI coated with MWCNTs (MWCNTs@h-HI) were prepared by connecting h-HI and MWCNTs with PABA as the active grafting agent. XRD, SEM, TEM and Lakeshore7307VSM were used to characterize the as-prepared products; hydroxy-iron powder, hollow HI and MWCNTs@HI were also characterized as comparisons. The results show that the hydroxy-iron powder can be prepared and grafted with MWCNTs. The best pitting time is 15 min, when the yield of h-HI is the largest, the wall thickness of h-HI particles with 2 μm in diameter is 200 nm, and the thickness of the grafting layer 150 nm. The saturation magnetization (Ms) of MWCNTs@h-HI is 140.88 (A·m2)·kg-1, the remanence (Mr) 1.4808 (A·m2)·kg-1 and the coercivity (Hc) 4.742×10-3 T.

AB - The hydroxy-iron powder with a hollow structure (h-hydroxy-iron, h-HI) was prepared using a pitting method, and then hollow-HI coated with MWCNTs (MWCNTs@h-HI) were prepared by connecting h-HI and MWCNTs with PABA as the active grafting agent. XRD, SEM, TEM and Lakeshore7307VSM were used to characterize the as-prepared products; hydroxy-iron powder, hollow HI and MWCNTs@HI were also characterized as comparisons. The results show that the hydroxy-iron powder can be prepared and grafted with MWCNTs. The best pitting time is 15 min, when the yield of h-HI is the largest, the wall thickness of h-HI particles with 2 μm in diameter is 200 nm, and the thickness of the grafting layer 150 nm. The saturation magnetization (Ms) of MWCNTs@h-HI is 140.88 (A·m2)·kg-1, the remanence (Mr) 1.4808 (A·m2)·kg-1 and the coercivity (Hc) 4.742×10-3 T.

KW - Carbon nanotubes

KW - Hydroxy-iron (HI)

KW - Magnetic performance

KW - Pitting method

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M3 - 文章

AN - SCOPUS:84985949326

SN - 1002-185X

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JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

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ER -

Preparation and magnetic properties of MWCNTs grafted hollow-HI

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