文献类型：期刊文献

英文题名：Constructing bifunctional porous nanosheets for efficient conversion of waste plastics into valuable hydrogen and carbons

作者：Xie, Meng[1];Xu, Hai[1];Wang, YiXuan[1];Pan, Helin[1];Duan, Dengle[3];Niu, Bo[1];Long, Donghui[1,2];Zhang, Yayun[1,2]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem Engn, Key Lab Specially Funct Polymer Mat & Related Tech, Minist Educ, Shanghai 200237, Peoples R China;[3]Zhongkai Univ Agr & Engn, Key Lab Green Proc & Intelligent Mfg Lingnan Speci, Minist Agr, Guangzhou 510225, Peoples R China

年份：2023

卷号：471

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20233014428306);WOS:【SCI-EXPANDED(收录号:WOS:001042538000001)】；

基金：This work was financially supported by National Natural Science Foundation of China (No. 22008073, No. 21878091, No. 22078100, No. 52102098) , Shanghai Sailing Program (No. 20YF1410600) , Funda- mental Research Funds for the Central Universities, and Shanghai Talent Development Fund (2021021) .

语种：英文

外文关键词：Metal oxides; Plastic; Hydrogen; Carbon nanotubes; Microwave pyrolysis

摘要：Metal oxides as promoting materials can convert waste plastics into hydrogen (H2) fuel by microwave pyrolysis, solving ecological pollution worldwide, but their tendency of agglomeration and poor porosity limit further applications. Herein, we reported a two-dimensional (2D) metal oxide nanosheets with porous network for recycling high-purity hydrogen and carbon nanotubes from waste plastics in microwave-induced reaction. The 2D porous structure significantly improves the growing space of CNTs and enhances the ability of wave absorption, thereby exhibiting a remarkable H2 selectivity of 87.5% and high H2 yield of 60.2 mmol g-1 LDPE, as well as producing high-value CNTs. Moreover, the reaction mechanism for microwave-induced catalytic pyrolysis is proposed, where the Fe2O3 particles on composites facilitated the breakage of C-H bonds, contributing to the generation of H2. The current work provides new insights into the recovery of waste plastics by metal oxides through microwave pyrolysis.