文献类型：期刊文献

英文题名：Bio-inspired fabrication of chitosan/PEO/Ti₃C₂T_x 2D MXene nanosheets supported palladium composite nanofiber catalysts via electrospinning

作者：Liu, Yonghong[1];Wu, Yuanyuan[1];Zhou, Jie[1];Li, Na[1];Zeng, Minfeng[1];Ren, Xiaorong[1];Shao, Linjun[1];Chen, Jinyang[1];Ying, Jiadi[1,2];Zhang, Tao[3];Xu, Wei[3];Yang, Zhen[1,3]

机构：[1]Shaoxing Univ, Res Ctr Adv Catalyt Mat & Funct Mol Synth, Sch Chem & Chem Engn, Key Lab Alternat Technol Fine Chem Proc Zhejiang P, Shaoxing 312000, Peoples R China;[2]Key Lab Hydrogen Energy Mat & Technol Shaoxing, Shaoxing 312000, Peoples R China;[3]Shaoxing Minsheng Pharmaceut Co Ltd, Shaoxing Doctoral Innovat Stn, Shaoxing 312000, Peoples R China

年份：2024

卷号：279

外文期刊名：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES

收录：SCI-EXPANDED(收录号：WOS:001314765000001)、、WOS

基金：This work was supported by the National Natural Science Foundation of China (Grant Nos. 12175149, 11875193, and 11475114) and Shaoxing Key Science and Technology Innovation Team Project (No. 2020-34) .

语种：英文

外文关键词：Chitosan; MXene; Nanofibers; Catalyst

外文摘要：In this study, novel chitosan/polyethylene oxide/Ti3C2Tx 2D MXene nanosheets (CS/PEO/Ti3C2Tx) nanofibers were successfully prepared by a continuous electrospinning process. During the electrospinning process, induced by the syringe tip capillary effects and electric field force, the Ti3C2Tx nanosheets were aligned along the direction of the nanofiber formation to occur a highly oriented structure. This well-ordered arrangement of the inorganic Ti3C2Tx nanosheets within the organic polymer matrix nanofiber was similar with nacre-like 'brick-and-motar' structure to some extent, resulting in a marked increase in thermal stability and mechanical properties of the resultant CS/PEO/Ti3C2Tx nanofiber. As 4 wt% of Ti3C2Tx nanosheets loaded, the highest tensile strength of the CS/PEO/Ti3C2Tx nanofiber mats was achieved as 31.7 MPa, about two times that of neat CS/PEO nanofibers. Uniformly dispersed Pd nanoparticles in size of about 1.6 nm have been successfully immobilized on the composite nanofiber with a solution impregnation process. With a loading as low as 0.2 mol% of Pd, the resultant Pd@CS/PEO/Ti3C2Tx composite nanofiber catalysts were highly active for both Heck and Sonogashira coupling reactions with broad reactants application scope, and could be recycled 15 runs without significant loss of activities.