文献类型：期刊文献

英文题名：Nacre-inspired graphene oxide/chitosan supported Pd species composite paper-like membrane with superior catalytic performance

作者：Zeng, Minfeng[1,3];Wu, Yuanyuan[1];Liu, Yonghong[1];Zheng, Xiu[1];Ying, Jiadi[1];Chen, Jinyang[1,2];Ren, Xiaorong[1];Yang, Zhen[1,3];Feng, Ruokun[1,3];Zhang, Tao[3];Xu, Wei[3];Zhang, Peng[4];Wang, Baoyi[4];Cao, Xingzhong[4]

机构：[1]Shaoxing Univ, Res Ctr Adv Catalyt Mat & Funct Mol Synth, Sch Chem & Chem Engn, Zhejiang Key Lab Alternat Technol Fine Chem Proc, Shaoxing 312000, Peoples R China;[2]Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China;[3]Minsheng Grp Shaoxing Pharmaceut Co Ltd, Shaoxing Doctoral Innovat Stn, Shaoxing 312000, Peoples R China;[4]Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China

年份：2025

卷号：306

外文期刊名：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES

收录：SCI-EXPANDED(收录号：WOS:001437914400001)、、EI(收录号：20250917968859)、Scopus(收录号：2-s2.0-85218857511)、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; Graphene oxide nanosheets; Bio-inspired composite; Catalysis; Positron annihilation

外文摘要：Recent studies have shown that graphene oxide (GO) nanosheets can form a nacre-like bioinspired layered structure with polysaccharide of chitosan (CS), leading to composites with excellent mechanical properties. In this study, we go further steps by immobilization of Pd species (both Pd2+ and Pd0) within nacre-like bioinspired layered GO-CS composite paper-like membranes by vacuum-assisted self-assembly process to fabricate novel GO- CS-Pd composite membrane catalysts for the first time. Synergistic interactions from hydrogen bonding (between the GO nanosheets and CS chains) and ionic bonding (between the GO nanosheets and Pd2+ ions) have been efficiently achieved, resulting in significantly improvement of the mechanical properties. Meanwhile, the in-situ grown Pd0 nanoparticles were homogeneously incorporated in the interstices of the nacre-like GO-CS composite membranes. The mechanical properties, specific area performances, and Pd0 nanoparticles size of the resultant GO-CS-Pd composite membrane are mainly tuned by the loading amount of CS. The membranes are high active for Suzuki reactions of aromatic halides and phenylboronic acid with catalyst loading as low as 0.05 mol%, and can be recycled for 8 runs without significant loss of activities. Positron annihilation lifetime spectroscopy and other structural characterization methods are implemented to characterize the unique compartmentalization structure in the nacre-like composite membranes.