文献类型：期刊文献

英文题名：Chitosan-Pd0 nanoparticles encapsulated in Al, Co-pillared montmorillonite by one-pot process

作者：Sun, Kailang[1];Zhang, Taojun[1];Zhou, Jie[1];Liu, Yonghong[1];Zeng, Minfeng[1];Yang, Zhen[1];Feng, Ruokun[1];Ren, Xiaorong[1];Zhang, Peng[2];Wang, Baoyi[2];Cao, Xingzhong[2]

机构：[1]Shaoxing Univ, Coll Chem & Chem Engn, Res Ctr Adv Catalyt Mat & Funct Mol Synth, Zhejiang Key Lab Alternat Technol Fine Chem Proc, Shaoxing 312000, Peoples R China;[2]Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China

年份：2024

卷号：247

外文期刊名：APPLIED CLAY SCIENCE

收录：SCI-EXPANDED(收录号：WOS:001111373000001)、、EI(收录号：20234615044492)、Scopus(收录号：2-s2.0-85176133388)、WOS

基金：The authors acknowledge the financial support from the National Natural Science Foundation of China (Grant No. 12175149, 11875193, 11475114) ; Zhejiang Provincial Fundamental Public Welfare Research Project of China (Grant No. LGG18E030004) ; and Shaoxing Key Science and Technology Innovation Team Project.

语种：英文

外文关键词：Chitosan; Hybrid nanocomposites; Green catalysis; Montmorillonite

外文摘要：Chitosan-Pd0 (CS-Pd0) nano particles encapsulated in Al, Co-pillared montmorillonite (MMt) nanocomposites were synthesized by a facile one-pot heat treatment method. The MMt was impregnated with Al, Co pillaring reagent, protonated chitosan solution, and Na2PdCl4 solution, followed with a controlled low-temperature (200 degrees C) heat treatment, resulting in Pd@CS/Al, Co-MMt nanocomposites. Al, Co pillaring effectively expanded the basal spacing of MMt layers from 1.24 nm to 1.82 nm, and generated numerous mesopores in interlayer space, resulting in increase of surface area from 11.8 m2/g to 198.3 m2/g. Due to the well encapsulation of CS chains in the interlayer nano-spaces, the specific surface area of the hybrid nanocomposite underwent a reasonably decrease as the CS content increase. Most of nano-sized Pd species (2-3 nm) chelated with CS chains dispersed well in the interlayer space of the porous Al, Co pillared MMt matrix. The resultant nanocomposite prepared by such facial one-pot process method have similar high comprehensive catalytic performances as applied in coupling reactions to that prepared by regular divided-multistep method. Moreover, it is confirmed that Al pillaring doped with Co and encapsulation of CS chains have synergistic improving effects on the comprehensive catalytic performance of the nanocomposites.