title: Controllable preparation of Ni nanoparticles for catalysis of coiled carbon fibers growth.
abstract: The mass preparation of high-purity coiled carbon fibers (CCFs) remains challenging due to the high complexity and low controllability of reaction. In this work, a controllable growth of Ni particles was fulfilled by liquid phase reduction of nickel sulfate with hydrazine hydrate. The impacts of the reaction temperature, NaOH concentration, and reaction time on the particle size and purity were investigated. The as-deposited Ni particles were characterized by scanning electron microscopy and X-ray diffraction. In addition, these Ni particles were also applied in preparing high-purity CCFs both on graphite and ceramic substrates. The diameter of the as-grown carbon microcoil was about 500 nm, and the related growth mechanism was discussed.
authors.affiliation: Clean Energy Materials and Engineering Center, School of Energy Science and Engineering, State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, Sichuan 611731, China ; Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, China.
authors.forename: Xian
authors.initials: X
authors.lastname: Jian
authors.affiliation: Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, China.
authors.forename: Zuowan
authors.initials: Z
authors.lastname: Zhou
authors.affiliation: Clean Energy Materials and Engineering Center, School of Energy Science and Engineering, State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, Sichuan 611731, China.
authors.forename: Sixin
authors.initials: S
authors.lastname: Wu
authors.affiliation: Clean Energy Materials and Engineering Center, School of Energy Science and Engineering, State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, Sichuan 611731, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Chen
authors.affiliation: Clean Energy Materials and Engineering Center, School of Energy Science and Engineering, State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, Sichuan 611731, China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Zeng
authors.affiliation: Clean Energy Materials and Engineering Center, School of Energy Science and Engineering, State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, Sichuan 611731, China.
authors.forename: Chao
authors.initials: C
authors.lastname: Wang
keywords: Carbon coil; Catalyst; Nanoparticle; Nickel