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    Home > Super high specific surface area nitrogen doped porous carbon materials can also be prepared by using cotton linter

    Super high specific surface area nitrogen doped porous carbon materials can also be prepared by using cotton linter

    • Last Update: 2017-05-31
    • Source: Internet
    • Author: User
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    The design of new carbon materials is a hot topic in materials science Carbon materials can be widely used in sensing, catalysis, energy storage, environmental remediation and other fields The traditional raw materials for carbon materials are mainly fossil resources, but with the large consumption of fossil energy, environmental problems have become increasingly prominent Therefore, it is of great significance to carry out the research on the preparation of carbon materials from renewable, cheap and green biomass, which is also the goal and direction of sustainable and green chemistry A new type of nitrogen doped porous carbon material with adjustable structure and ultra-high specific surface area and its application in the field of sewage treatment and super electric container (source: Journal of Materials Chemistry A) Zhang Yagang, researcher of Resource Chemistry Research Office of Xinjiang Institute of physical and chemical technology, Chinese Academy of Sciences, led his team to design and develop a new type of carbon fiber and functional nitrogen doped porous carbon material based on the resource transformation in Xinjiang, using the rich cotton linter in Xinjiang as the raw material In the early work, Zhang Yagang's team designed and developed a new process of preparing carbon fiber with cotton linter as raw material, environmental protection and low cost In the process of preparing carbon fiber, the environmental friendly carbacel process is used Compared with the traditional method of preparing regenerated cellulose, the process is not only simpler, but also more environmentally friendly Relevant research results were published in the international journal ACS Sustainable Chemistry & Engineering, 2016, 4 (10): 5585-5593 Recently, Zhang Yagang's team prepared nitrogen doped porous carbon materials from cotton linter through cellulose carbamate, solution preparation, carbonization, activation and other steps The pore structure of the materials is adjustable, with ultra-high specific surface area of 3700m2 / g and nitrogen content of 7.7% At the same time, the effects of different carbonization temperature on the yield, element composition, morphology and pore structure of the samples were investigated The electrochemical performance and dye adsorption of nitrogen doped porous carbon were also evaluated The results show that the super capacitor made of this material has excellent cycle stability, and the specific capacity can still maintain 93-95% of the initial capacity after 5000 cycles In addition, the specific capacitance is 282 f / g in 1 mol / L H2SO4 electrolyte, and 289 f / g in 6 mol / L KOH electrolyte, with excellent rate characteristics The experimental results show that the nitrogen doped porous carbon has excellent dye adsorption performance, and the adsorption capacity of methylene blue reaches 1551mg / g Relevant research results have been applied for Chinese invention patents and published in the International Journal of materials chemistry a recently This kind of nitrogen doped porous carbon material with plant-based renewable resources as raw materials, simple technology, controllable structure and ultra-high specific surface area has a good application prospect in the field of energy and environment, and also provides a new design idea for the design of new functional carbon materials Paper link: pubs.rsc.org/en/content/article landing/2014/ta/c7ta02113e
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