炭纳米纤维在接近室温下对低浓度NO的催化氧化  

Catalytic oxidation of NO at low concentrations by carbon nanofibers near room temperature

作　　者：郭泽宇[1,2] 刘宣材 黄贺东 杨鹏艳 GUO Ze-yu;LIU Xuan-cai;HUANG He-dong;YANG Peng-yan(College of Materials Science and Art Design,Inner Mongolia Agricultural University,Hohhot,010018,China;Inner Mongolia Key Laboratory of Sandy Shrubs Fibrosis and Energy Development and Utilization,Inner Mongolia Agricultural University,Hohhot 010018,China)

机构地区：[1]内蒙古农业大学材料科学与艺术设计学院,内蒙古呼和浩特010018 [2]内蒙古农业大学内蒙古沙生灌木资源纤维化和能源化利用重点实验室,内蒙古呼和浩特010018

出　　处：《新型炭材料》2021年第2期401-408,共8页New Carbon Materials

基　　金：国家自然科学基金资助项目(51962029,51602162);内蒙古自治区科技计划项目(2019GG265);内蒙古自治区高等学校“青年科技英才计划”(NJYT-19-A08);内蒙古自治区科技重大专项(2020SZD0024);2020年内蒙古自治区草原英才工程青年创新创业人才项目;内蒙古农业大学高层次人才引进科研启动项目(NDGCC2016-20);内蒙古自治区高等学校科学研究项目(NJZZ17054).

摘　　要：采用聚丙烯腈(PAN)作为静电纺丝前驱体,通过静电纺丝法制备了炭纳米纤维,经预氧化和炭化处理,得到了孔隙率高、比表面积大的PAN基炭纳米纤维(PCNFs)。通过控制前驱体溶液的浓度,可以得到不同直径的PCNFs。制备的样品在室温(20℃)下能去除低浓度的NO(5×10^(−5))。结果表明,炭纳米纤维的微观结构可以影响其对NO的催化性能。CNFs直径越小,微孔越发达,比表面积越大,吸附和催化氧化效果越好。Polyacrylonitrile(PAN)nanofibers obtained by electrospinning were used to prepare PAN-based carbon nanofibers(PCNFs)by pre-oxidation,carbonization and high-temperature treatment in NH3.The PCNFs were used for the removal of low concentrations of NO(5×10^(−5))near room temperature(20℃)by catalytic oxidation.Results indicated that the PCNFs had high porosity and a large specific surface area,and their diameters could be regulated by changing the PAN concentration.The smaller the diameter of the PCNFs the more micropores were developed,and the larger the specific surface area the better the adsorption and catalytic oxidation performance.

关 键 词：静电纺丝 多孔炭纳米纤维 NO脱除 催化氧化 

分 类 号：TS102.523[轻工技术与工程—纺织工程]