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Understanding the facet-dependent catalytic performance of hematite microcrystals in a CO oxidation reaction†
Inorganic Chemistry Frontiers ( IF 7 ) Pub Date : 2018-07-30 00:00:00 , DOI: 10.1039/c8qi00548f
Liming Sun 1, 2 , Wenwen Zhan 1, 2 , Yan-An Li 2, 3 , Fan Wang 1, 2 , Xueliang Zhang 1, 2 , Xiguang Han 1, 2
Affiliation  

Hematite (α-Fe2O3) with well-defined plate, cube and rod morphologies has been successfully synthesized, which predominantly exposes the (001), (012) and (110) facets, respectively. Rod-like α-Fe2O3 with exposed (110) facets showed a greater CO catalytic activity than catalysts with all other morphologies. X-ray photoelectron spectroscopy (XPS) results and theoretical calculation analysis revealed that the different catalytic activities over the catalysts with various morphologies could be attributed to various catalytic mechanisms caused by different surface structures, leading to different activation energies in CO oxidation catalysis by α-Fe2O3 (001), (012) and (110) facets.

中文翻译:

了解赤铁矿微晶在CO氧化反应中的切面依赖性催化性能

赤铁矿(α-的Fe 2 ö 3)具有良好定义的板,立方体和杆形态已被成功地合成,这主要是暴露(001),(012)和(110)面,分别。棒状的α-Fe 2 ö 3露出(110)面显示出比所有其它形态的催化剂更大的CO的催化活性。X射线光电子能谱(XPS)的结果和理论计算分析表明,对具有各种形态的催化剂的不同催化活性可能归因于不同表面结构引起的各种催化机理,从而导致α-氧化碳在CO氧化催化中的活化能不同。 Fe 2 O 3(001),(012)和(110)面。
更新日期:2018-07-30
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