Facile synthesis of Ag-OMS-2 nanorods and their catalytic applications in CO oxidation
Facile synthesis of Ag-OMS-2 nanorods and their catalytic applications in CO oxidation
复制标题
DOI：
10.1016/j.micromeso.2008.05.029
复制
发表时间：
2008-12-01
影响因子：
5.2
通讯作者：
Shen, Wenjie
中科院分区：
文献类型：
--
作者：
Chen, Junli;Li, Juan;Shen, Wenjie
Ag-OMS-2纳米棒是通过AgMnO 4与醋酸锰的简单固相反应合成的。纳米棒的直径约为8 nm，长度为50-150 nm，微孔和中孔共存。结构分析表明，纳米棒是无定形的，但表现出银-锰氧化物结构的晶格条纹。银物种呈现为Ag+，锰的平均氧化态为3.7。最重要的是，Ag-OMS-2纳米棒显示出相当高的CO氧化催化性能，在90 ° C下具有100%CO转化率，这主要是因为在隧道中存在Ag+的情况下显着增强的氧活化和CO吸附。(C)2008年爱思唯尔公司All rights reserved.
Ag-OMS-2 nanorods were synthesized by a simple solid-state reaction of AgMnO4 with manganese acetate. The nanorods had a diameter of about 8 mn and lengths of 50-150 nm with the co-existence of micropores and mesopores. Structural analysis revealed that the nanorods were amorphous but exhibited lattice fringes of Ag-hollandite structure. The silver species presented as Ag+ and the average oxidation state of manganese was 3.7. Most importantly, the Ag-OMS-2 nanorods showed quite high catalytic performance for CO oxidation with 100% CO conversion at 90 degrees C, mainly because of the significantly enhanced oxygen activation and CO adsorption with the presence of Ag+ in the tunnels. (C) 2008 Elsevier Inc. All rights reserved.