Self-templating synthesis of biomass-based porous carbon nanotubes for energy storage and catalytic degradation applications  

作　　者：Manman Xu Shiqi Fu Yukai Wen Wei Li Qiongfang Zhuo Haida Zhu Zhikeng Zheng Yuwen Chen Anqi Wang Kai Yan 

机构地区：[1]Research Centre for Eco-Environmental Engineering,School of Environment and Civil Engineering,Dongguan University of Technology,Dongguan,523808,China [2]School of Environmental Science and Engineering,Sun Yat-sen University,Guangzhou,510275,China

出　　处：《Green Energy & Environment》2024年第3期584-595,共12页绿色能源与环境（英文版）

基　　金：financial support from the National Natural Science Foundation of China(21908024,22078374 and 52100173);Key Realm Research and Development Program of Guangdong Province(2020B0202080001);Science and Technology Planning Project of Guangdong Province,China(2021B1212040008);Guangdong Laboratory for Lingnan Modern Agriculture Project(NT2021010);Scientific and Technological Planning Project of Guangzhou(202206010145).

摘　　要：Dwindling energy sources and a worsening environment are huge global problems,and biomass wastes are an under-exploited source of material for both energy and material generation.Herein,self-template decoction dregs of Ganoderma lucidum-derived porous carbon nanotubes(ST-DDLGCs)were synthesized via a facile and scalable strategy in response to these challenges.ST-DDLGCs exhibited a large surface area(1731.51 m^(2)g^(-1))and high pore volume(0.76 cm^(3)g^(-1)),due to the interlacing tubular structures of precursors and extra-hierarchical porous structures on tube walls.In the ST-DDLGC/PMS system,the degradation efficiency of capecitabine(CAP)reached~97.3%within 120 min.Moreover,ST-DDLGCs displayed high catalytic activity over a wide pH range of 3–9,and strong anti-interference to these typical and ubiquitous anions in wastewater and natural water bodies(i.e.,H_(2)PO_(4)^(-),NO_(3)^(-),Cl^(-) and HCO_(3)^(-)),in which a ^(1)O_(2)-dominated oxidation was identified and non-radical mechanisms were deduced.Additionally,ST-DDLGC-based coin-type symmetrical supercapacitors exhibited outstanding electrochemical performance,with specific capacitances of up to 328.1 F g^(-1)at 0.5 A g^(-1),and cycling stability of up to 98.6%after 10,000 cycles at a current density of 2 A g^(-1).The superior properties of ST-DDLGCs could be attributed to the unique porous tubular structure,which facilitated mass transfer and presented numerous active sites.The results highlight ST-DDLGCs as a potential candidate for constructing inexpensive and advanced environmentally functional materials and energy storage devices.

关 键 词：Ganoderma lucidum residue Porous carbon nanotubes Self-template method Wastewater treatment Supercapacitor electrode 

分 类 号：X70[环境科学与工程—环境工程] TQ127.11[化学工程—无机化工] TB383.1[一般工业技术—材料科学与工程]