催化作用
纳米片
化学
纳米复合材料
氧气
化学工程
一氧化碳
钴
纳米颗粒
催化氧化
金属
无机化学
纳米技术
材料科学
有机化学
工程类
作者
Dandan Wu,Runping Jia,Ming Wen,Shuai Zhong,Qingsheng Wu,Yong Qing Fu,Shu-Hong Yu
出处
期刊:Inorganic Chemistry
[American Chemical Society]
日期:2020-01-21
卷期号:59 (2): 1218-1226
被引量:23
标识
DOI:10.1021/acs.inorgchem.9b02937
摘要
A nanostructural catalyst with long-term durability under harsh conditions is very important for an outstanding catalytic performance. Herein, a new ultrastable PtCo/Co3O4-SiO2 nanocatalyst was explored to improve the catalytic performance of carbon monoxide (CO) oxidation by virtue of the surface active lattice oxygen derived from strong metal-support interactions. Such a structure can overcome the issues of Co3O4-SiO2 inactivation by water vapor and the Pt inferior activity at low temperature. Further, Co3O4-SiO2 nanosheets endow superior structure stability under high temperatures of up to 800 °C, which gives long-term catalytic cyclability of PtCo/Co3O4-SiO2 nanocomposites for CO oxidation. Moreover, the large specific surface areas (294 m2 g-1) of the nanosheet structure can expose abundant surface active lattice oxygen, which significantly enhanced the catalytic activity of CO oxidation at 50 °C over 30 days without apparent aggregation of PtCo nanoparticles after 20 cycles from 50 to 400 °C. It can be expected to be a promising candidate as an ultrastable efficient catalyst.
科研通智能强力驱动
Strongly Powered by AbleSci AI