One-step floating conversion of biomass into highly graphitized and continuous carbon nanotube yarns

Gongxun Zhai; Qianqian Wang; Fuyao Liu; Zexu Hu; Chao Jia; Dengxin Li; Hengxue Xiang; Meifang Zhu

Green Energy & Environment (Dec 2023)

One-step floating conversion of biomass into highly graphitized and continuous carbon nanotube yarns

Gongxun Zhai,
Qianqian Wang,
Fuyao Liu,
Zexu Hu,
Chao Jia,
Dengxin Li,
Hengxue Xiang,
Meifang Zhu

Affiliations

Gongxun Zhai: State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
Qianqian Wang: State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
Fuyao Liu: State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
Zexu Hu: State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
Chao Jia: State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
Dengxin Li: State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
Hengxue Xiang: Corresponding author.; State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
Meifang Zhu: State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China

Journal volume & issue: Vol. 8, no. 6
pp. 1711 – 1718

Abstract

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The rapid growth of the demand for carbon nanotubes (CNTs) has greatly promoted their large-scale synthesis and development. However, the continuous production of CNT fibers by floating catalyst chemical vapor deposition (FCCVD) requires a large amount of non-renewable carbon sources. Here, the continuous production of highly graphitized CNT yarns from biomass tannic acid (TA) is reported. The chelation of TA and catalyst promotes the rapid cracking of biomass into carbon source gas, and the pyrolysis cracking produces the reducing gas, which solves the problems of the continuous production of CNT yarns using biomass. Through simple twisting, the mechanical strength of CNT yarn can reach 886 ± 46 MPa, and the electrical conductivity and graphitization (IG/ID) can reach 2 × 105 S m−1 and 6.3, respectively. This work presents a promising solution for the continuous preparation of CNT yarns based on green raw material.

Published in Green Energy & Environment

ISSN: 2468-0257 (Online)
Publisher: KeAi Communications Co., Ltd.
Country of publisher: China
LCC subjects: Technology: Mechanical engineering and machinery: Renewable energy sources; Science: Biology (General): Ecology
Website: https://www.keaipublishing.com/en/journals/green-energy-and-environment/

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