Surface Active Sites on Co3O4 Nanobelt and Nanocube Model Catalysts for CO Oxidation
Surface Active Sites on Co3O4 Nanobelt and Nanocube Model Catalysts for CO Oxidation
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用于 CO 氧化的 Co3O4 纳米带和纳米立方体模型催化剂的表面活性位点
DOI：
10.1007/s12274-010-1040-2
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发表时间：
2010-05-01
期刊：
影响因子：
9.9
通讯作者：
Li, Yadong
中科院分区：
文献类型：
--
作者：
Hu, Linhua;Sun, Keqiang;Li, Yadong
以Co 3 O 4纳米带和纳米立方体为模型催化剂进行了CO氧化反应的研究。具有暴露的{011}面占优势的Co 3 O 4纳米带比具有暴露的{001}面的Co 3 O 4纳米立方体更活跃。CO程序升温还原实验表明，Co_3O_4纳米带比Co_3O_4纳米立方体具有更强的还原性能。Co_3O_4纳米带{011}晶面的Co ~（3+）位的翻转频率远高于Co_3O_4纳米立方体{001}晶面的翻转频率，揭示了形状和晶面效应的本质。
CO oxidation has been performed on Co3O4 nanobelts and nanocubes as model catalysts. The Co3O4 nanobelts which have a predominance of exposed {011} planes are more active than Co3O4 nanocubes with exposed {001} planes. Temperature programmed reduction of CO shows that Co3O4 nanobelts have stronger reducing properties than Co3O4 nanocubes. The essence of shape and crystal plane effect is revealed by the fact that turnover frequency of Co3+ sites of {011} planes on Co3O4 nanobelts is far higher than that of {001} planes on Co3O4 nanocubes.