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Top-down strategy for bamboo lignocellulose-derived carbon heterostructure with enhanced electromagnetic wave dissipation

引用

Chinese Journal of Chemical Engineering 2022年第3期35卷 360-369页

作者： Shaoxiang Cai Han Yan Qiuyi Wang He Han Ru Li Zhichao Lou School of Textile Garment and Design Changshu Institute of TechnologyChangshu 215506China Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources Nanjing Forestry UniversityNanjing 210037China College of Materials Science and Engineering Nanjing Forestry UniversityNanjing 210037China Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhenGuangdong 518055China College of Engineering University of GeorgiaAthens 30605GAUSA

Biomass-derived residue carbonization has been an important issue for"carbon fixation"and"zero emission",and the carbonized products have multiple application ***,there have been no specific research to study the differences in macro-and micro-morphology,electrical properties and many other aspects of the products obtained from carbonization of pure cellulose,pure lignin or their complex,*** this work,lignocellulose with cellulose to lignin mass ratio of 10:1 is obtained using p-toluenesulfonic acid hydrolysis followed by homogenization process at a controlled ***,carbon heterostructure with fibers and sheets(CH-10)are obtained by pyrolysis at 1500℃.Detailed results imply that the fiber-like carbon structure possesses high crystallinity and low defect density,coming from carbonization of the cellulose content in lignocellulose(LC)***,the graphite-like carbon sheet with high defect density and low crystallinity comes from carbonization of the lignin content in *** investigation indicates CH-10 possesses enhanced polarization and moderate impedance matching which makes it an ideal candidate for electromagnetic wave(EMW)***-10 exhibits an excellent EMW absorption performance with a minimum RL value of-50.05 dB and a broadest absorption bandwidth of 4.16 GHz at a coating thickness as thin as 1.3 mm.

关键词： Carbon heterostructure Conductive loss Pyrolysis Interface bamboo lignocellulose Nanostructure

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