Shape-controllable synthesis of lignin-derived boron-doped nanoporous carbons for dye adsorption and electrochemical H2O2 production

被引:0
|
作者
Dong, Zhiguo [1 ,2 ]
Guan, Wei [1 ]
Yang, Haiping [2 ]
Chen, Lei [1 ]
Hua, Dongliang [1 ]
Li, Tianjin [1 ]
Chen, Hanping [2 ]
机构
[1] Qilu Univ Technol, Energy Res Inst, Shandong Acad Sci, Shandong Prov Key Lab Biomass Gasificat Technol, Jinan 250014, Peoples R China
[2] Huazhong Univ Sci & Technol, Sch Energy & Power Engn, State Key Lab Coal Combust, Wuhan 430074, Peoples R China
关键词
Lignin-derived nanoporous carbon; Controllable shape; Borate; Adsorption; Electrocatalysis; METHYLENE-BLUE; ACTIVATED CARBON; KRAFT LIGNIN; NITROGEN; NANOSHEETS; REMOVAL;
D O I
10.1016/j.renene.2024.121372
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Lignin-derived nanocarbon materials (LNCMs) have attracted intense attention due to their excellent properties and promising applications in renewable energy technologies. However, lignins tend to melt and agglomerate during pyrolysis, make it difficult to control the morphology and pore structure of the resulting carbon. In this study, boron-doped porous nanocarbon (BFC) in various shapes (sphere, band, and sheet) were synthesized using ammonium borate as a crosslinking agent to prevent lignin melting, assisted by liquid nitrogen freeze-drying and potassium phosphate (KP) templating. The effects of BFC structure on methylene blue adsorption and electrochemical generation of H2O2 were investigated. The results show that KP-1/1-8BFC exhibits a high specific surface area (912.89 m(2)/g) and a hierarchical micro-mesoporous structure, achieving a remarkable adsorption capacity of 473.9 mg/g for methylene blue and rapid kinetics. The selectivity of KP-1/20-8BFC for electrochemical production of H2O2 reaches 85 %. This study offers theoretical guidance for the controllable synthesis of LNCMs, contributing to the advancement of sustainable energy solutions.
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页数:10
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