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

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

机构地区：[1]State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Materials Science and Engineering,Donghua University,Shanghai,201620,China

出　　处：《Green Energy & Environment》2023年第6期1711-1718,共8页绿色能源与环境（英文版）

基　　金：the support from the Science and Technology Commission of Shanghai Municipality (20JC1414900);the Joint Funds of the National Natural Science Foundation of China (U20A20257);the Program of Shanghai Academic/Technology Research Leader (20XD1433700);the International Cooperation Fund of the Science and Technology Commission of Shanghai Municipality (20520740800)。

摘　　要：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 × 10^(5)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.

关 键 词：Carbon nanotube Tannic acid BIOMASS Pyrolysis Floating catalyst chemical vapor deposition 

分 类 号：TQ127.11[化学工程—无机化工] TB383.1[一般工业技术—材料科学与工程]