| 李国政,杨杰,王文领,杨海健,邱建华,田泱源,何凤林,张建,周浩,王磊.化学通报,2017,80(12):1123-1127. |
| Co掺杂的OMS-2纳米纤维的合成研究 |
| Hydrothermal synthesis of Co doped OMS-2 nanofibers |
| 投稿时间：2017-05-08 修订日期：2017-06-19 |
| DOI： |
| 中文关键词: 水热法 Co 掺杂 氧化锰八面体分子筛 纳米纤维 |
| 英文关键词:hydrothermal method, the incorporation of Co, octahedral molecular sieves, nanofibers |
| 基金项目:国家自然科学基金优秀青年项目(51422212)、国家自然科学基金(21403261)、浙江省自然科学基金杰出青年项目(LR16B030001) |
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| 中文摘要: |
| 以KMnO4、MnSO4、Co (NO3)2?6H2O和HNO3为反应原料，采用水热法合成了一系列掺杂过渡金属Co的氧化锰八面体分子筛(OMS-2)，采用X-射线衍射(XRD)，扫描电镜(SEM)，傅里叶红外光谱(FT-IR)，低温氮气物理吸脱附和H2程序升温还原(H2-TPR)对样品进行了表征，研究了Co的掺杂对OMS-2分子筛的结构、形貌和氧化还原性质等的影响，并对该系列催化剂进行了CO氧化性能评价。结果表明，掺杂的Co并未改变OMS-2的晶体结构，并高分散在OMS-2骨架结构中；掺杂Co的OMS-2分子筛的形貌发生了由纳米短棒向纳米纤维的转变。不仅如此，Co的掺杂增加了活性氧物种的移动性，改善了OMS-2分子筛的催化CO氧化性能。 |
| 英文摘要: |
| Cobalt incorporated manganese octahedral molecular sieves (OMS-2) were synthesized using a one-step hydrothermal method with the mixture of KMnO4, MnSO4, Co (NO3)2?6H2O and HNO3 as precursors. The structure, morphology, textural properties, redox properties and the surface hydrophobicity of the synthesized Co doped K-OMS-2 were measured by XRD, FT-IR, SEM, N2 sorption, H2-TPR and XPS. The results showed that the incorporation of Co didn’t change or destroy the crystal structure of OMS-2. Depending on the extent of Co incorporation, their morphology changed from nanorods into nanofibers. Moreover, the incorporation of Co into OMS-2 structure increased ability of active oxygen species, and improved their catalytic performance. |
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