文献类型：期刊文献

英文题名：Palladium nanoparticles embedded chitosan/poly(vinyl alcohol) composite nanofibers as an efficient and stable heterogeneous catalyst for Heck reaction

作者：Ye, Zeyu[1];Zhang, Benben[1];Shao, Linjun[1];Xing, Guiying[1];Qi, Chenze[1];Tao, Hongyu[1]

机构：[1]Shaoxing Univ, Zhejiang Key Lab Alternat Technol Fine Chem Proc, Shaoxing 312000, Zhejiang, Peoples R China

年份：2019

卷号：136

期号：41

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：SCI-EXPANDED(收录号：WOS:000476766200009)、、EI(收录号：20192307010365)、Scopus(收录号：2-s2.0-85066498448)、WOS

基金：The authors thank very much for the financial support from the National Natural Science Foundation of China (Grant No. 11705117 and 11575117).

语种：英文

外文关键词：chitosan; electrospinning; heck reaction; palladium; poly(vinyl alcohol)

外文摘要：In this study, palladium nanoparticles were successfully embedded into modified chitosan/poly(vinyl alcohol) composite nanofibers (Pd-CS/PVA nanofibers) by electrospinning. Then, the Pd-CS/PVA nanofibers were treated at evaluated temperature to improve its solvent resistance and in situ reduce Pd2+ cations into Pd-0 active species. The incorporated palladium nanoparticles with ultra small mean diameter of 3.73 +/- 1.04 nm are evenly distributed inside the Pd-CS/PVA nanofiber. The resulting Pd-CS/PVA nanofiber mat exhibits high catalytic activity for Heck reaction of aromatic iodides with alkenes and can be recycled for 18 times without loss of initial activity. The high catalytic activity and stability of Pd-CS/PVA nanofiber mat can be attributed to the ultra small diameter nanofibers, strong chelating ability of chitosan, and fine embedment of palladium species inside the nanofiber. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48026.