| 超小尺寸碳载Mn3O4纳米催化剂制备及其催化性能 |
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| 引用本文： | 陈润奇,颜雨坤,温国栋,周杨韬,那铎,张劲松.超小尺寸碳载Mn3O4纳米催化剂制备及其催化性能[J].精细化工,2023,40(3):592-599+607. |
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| 作者姓名： | 陈润奇 颜雨坤 温国栋 周杨韬 那铎 张劲松 |
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| 作者单位： | 中国科学院金属研究所,中国科学院金属研究所,中国科学院金属研究所,中国科学院金属研究所,中国科学院金属研究所,中国科学院金属研究所 |
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| 基金项目： | 辽宁省自然科学基金(2021-MS-013),沈阳材料科学国家研究中心青年科学基金项目(L2019F6,L2019F15和L2019F30) |
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| 摘 要： | 以MnCl2为原料，聚乙烯醇(PVA)为稳定剂，利用PVA介导沉淀法制备Mn3O4纳米粒子(PVA/Mn3O4)，进一步将冻干的PVA/Mn3O4复合物炭化制备了超小尺寸的Mn3O4-C催化剂。使用XRD、XPS、TEM、BET表征制备材料的结构和形貌，发现PVA能够有效减小Mn3O4在制备过程中的聚集和长大。无PVA介导沉淀法制备的Mn3O4-P平均粒径为(38.8±9.3)nm。加入PVA后，制备过程中PVA分子链间的Mn3O4纳米粒子平均粒径为(3.2±0.8)nm，经过Ar保护炭化处理后，平均粒径为(4.5±1.2)nm的Mn3O4纳米粒子被均匀固定在碳基底上。制备的Mn3O4<...
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| 关 键 词： | 聚乙烯醇 沉淀法 稳定剂 Mn3O4 类芬顿 亚甲基蓝 功能材料 |
| 收稿时间： | 2022/5/7 0:00:00 |
| 修稿时间： | 2022/10/19 0:00:00 |
Preparation of ultrafine carbon-supported Mn3O4 nanocatalyst for efficient degradation of methylene blue |
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| CHEN Runqi,YAN Yukun,WEN Guodong,ZHOU Yangtao,NA Duo and ZHANG Jinsong.Preparation of ultrafine carbon-supported Mn3O4 nanocatalyst for efficient degradation of methylene blue[J].Fine Chemicals,2023,40(3):592-599+607. |
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| Authors: | CHEN Runqi YAN Yukun WEN Guodong ZHOU Yangtao NA Duo and ZHANG Jinsong |
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| Affiliation: | Institute of Metal Research, Chinese Academy of Sciences,Institute of Metal Research, Chinese Academy of Sciences,Institute of Metal Research,Chinese Academy of Sciences,Institute of Metal Research,Chinese Academy of Sciences,Institute of Metal Research,Chinese Academy of Sciences,Institute of Metal Research,Chinese Academy of Sciences |
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| Abstract: | A ultrafine carbon-supported Mn3O4 nanocatalyst by poly (vinyl alcohol)(PVA) mediated precipitation method using poly(ethylene glycol) (PVA) as a stabiliser was reported. The structure and morphology of the prepared nanomaterials were characterized by XRD, XPS, and TEM, and it was found that PVA could effectively reduce the aggregation and growth of Mn3O4 nanoparticles during the preparation process. The size of Mn3O4 nanoparticles prepared in the absence of PVA is 38.8 (±9.3) nm, while the size of Mn3O4 nanoparticles dispersed in the PVA molecular chains was 3.2 (±0.8) nm. After the Ar-protected carbonization treatment of the freeze-dried PVA/Mn3O4 composite, the Mn3O4 nanoparticles were uniformly immobilized on the C substrate with a particle size of 4.5 (±1.2) nm. The prepared Mn3O4-C catalysts have excellent ability for Fenton-like degradation of methylene blue (MB). Meanwhile, Mn3O4-C has better cycling stability compared to the Mn3O4 nanoparticles prepared in the absence of PVA. |
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| Keywords: | PVA precipitation stabilizer Mn3O4 Fenton-like methylene blue |
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