| 三维α-MnO2@Co3O4异质材料的制备、表征及其催化性能 |
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| 引用本文： | 刘恒发,谢钰,刘琪,程高,孙明,余林.三维α-MnO2@Co3O4异质材料的制备、表征及其催化性能[J].无机化学学报,2021,37(1):47-54. |
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| 作者姓名： | 刘恒发 谢钰 刘琪 程高 孙明 余林 |
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| 作者单位： | 广东工业大学轻工化工学院 |
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| 基金项目： | 国家自然科学基金(No.21306026);广东省自然科学基金(No.2018A030310563)资助。 |
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| 摘 要： | 以α-MnO2纳米线为基底,原位生长ZIF-67,再经焙烧转化为三维α-MnO2@Co3O4异质材料,并用于甲苯的催化燃烧反应。结果表明:粒径大小约为12 nm的Co3O4纳米颗粒均匀生长在MnO2纳米线外表面,形成异质界面。该复合材料的低温可还原性能更佳,具有更多的表面活性氧物种。相比于α-MnO2纳米线,α-MnO2@Co3O4表现出更佳的甲苯催化燃烧性能:起燃温度(转化率10%)T10为202℃,完全燃烧温度(转化率90%)T90为235℃。
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| 关 键 词： | 二氧化锰 分级结构 可控合成 催化燃烧 |
| 收稿时间： | 2020/6/8 0:00:00 |
| 修稿时间： | 2020/9/21 0:00:00 |
Preparation,Characterization and Catalytic Activity of 3D Heterogeneous α?MnO2@Co3O4 Material |
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| LIU Heng-F,XIE Yu,LIU Qi,CHENG Gao,SUN Ming,YU Lin.Preparation,Characterization and Catalytic Activity of 3D Heterogeneous α?MnO2@Co3O4 Material[J].Chinese Journal of Inorganic Chemistry,2021,37(1):47-54. |
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| Authors: | LIU Heng-F XIE Yu LIU Qi CHENG Gao SUN Ming YU Lin |
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| Institution: | (School of Chemical Engineering and Light Industry,Key Laboratory of Clean Chemistry Technology of Guangdong Regular Higher Education,Guangzhou Key Laboratory of Clean Transportation Energy Chemistry,Guangdong University of Technology,Guangzhou 510006,China) |
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| Abstract: | Theα-MnO2 nanowires were used as the substrates for the in?situ growth of ZIF-67,and then converted into 3Dα-MnO2@Co3O4 heterogeneous material by calcination,and its catalytic combustion of toluene performance was studied.The results show that Co3O4 nanoparticles with a particle size of about 12 nm grew uniformly on the outer surface of MnO2 nanowires,forming a heterogeneous interface.The composite material has better low-temperature reducibility and possesses more surface-active oxygen species.Compared withα-MnO2 nanowires,α-MnO2@Co3O4 exhibited more excellent toluene catalytic combustion performance with an ignition temperature(10%conversion)T10 of 202℃and a complete combustion temperature(90%conversion)T90 of 235℃. |
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| Keywords: | manganese oxide heterogeneous structure controlling synthesis catalytic combustion |
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