Facet- and defect-engineered Pt/Fe2O3 nanocomposite catalyst for catalytic oxidation of airborne formaldehyde under ambient conditions

时间:2020-07-07作者:浏览量:453


Facet- and defect-engineered Pt/Fe2O3 nanocomposite catalyst for catalytic oxidation of airborne formaldehyde under ambient conditions

作者:Chen, MH (Chen, Muhua)[ 1 ] ; Yin, H (Yin, Hui)[ 1 ] ; Li, XY (Li, Xiaoyin)[ 1 ] ; Qiu, YP (Qiu, Yuping)[ 1 ] ; Cao, GX (Cao, Guoxuan)[ 1 ] ; Wang, JJ (Wang, Jiajun)[ 1 ] ; Yang, XF (Yang, Xianfeng)[ 2 ] ; Wang, P (Wang, Ping)[ 1 ]


JOURNAL OF HAZARDOUS MATERIALS


卷: 395

文献号: 122628


DOI: 10.1016/j.jhazmat.2020.122628


出版年: AUG 5 2020


文献类型:Article


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摘要

Formaldehyde (HCHO) is one of the most infamous indoor pollutants that imposes a great threat to human health. Herein, we report the development of a high-performance Pt/Fe2O3 catalyst for HCHO oxidation employing a facet- and defect-engineering strategy, with special focus on the surface structure effect of alpha-Fe2O3 on the catalytic properties. A supported N nanocatalyst on hollow octadecahedral alpha-Fe2O3 with exclusively exposed {113} and {104} facets was prepared using a hydrothermal method followed by impregnation-reduction treatment. The high-index facets of alpha-Fe2O3 render the formation of abundant oxygen vacancies and an improved dispersion of N nanoparticles. This led to an increased Pt/O-vacancy coexistence in close proximity, which collaboratively promote the generation of active oxygen and surface OH species. As a consequence, the Pt/Fe2O3-HO catalyst exhibited impressively high and stable activity towards HCHO oxidation at room temperature, which was five-fold higher than that of the supported N catalyst on commercial alpha-Fe2O3.


关键词

作者关键词:Formaldehyde catalytic oxidation; Surface engineering; Pt-based catalyst; Octadecahedral Fe2O3; High index facet


KeyWords Plus:ROOM-TEMPERATURE; INDOOR FORMALDEHYDE; ACTIVATED CARBON; EFFICIENT; REMOVAL; PHASE; CO; NANOPARTICLES; DECOMPOSITION; PERFORMANCE


作者信息

通讯作者地址: Wang, P (通讯作者)


显示更多South China Univ Technol, Sch Mat Sci & Engn, Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou 510641, Guangdong, Peoples R China.

地址:


显示更多[ 1 ]‎ South China Univ Technol, Sch Mat Sci & Engn, Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou 510641, Guangdong, Peoples R China

显示更多[ 2 ]‎ South China Univ Technol, Analyt & Testing Ctr, Guangzhou 510641, Guangdong, Peoples R China

电子邮件地址:mspwang@scut.edu.cn


基金资助致谢

基金资助机构显示详情授权号

National Key R&D Program of China

2018YFB1502104

National Natural Science Foundation of China


51621001

Foundation for Research Groups of the Natural Science Foundation of Guangdong Province

2016A030312011

Special Support Plan for National 10000-talents Program  

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出版商

ELSEVIER, RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS


期刊信息

Impact Factor (影响因子): Journal Citation Reports

类别 / 分类

研究方向:Engineering; Environmental Sciences & Ecology


Web of Science 类别:Engineering, Environmental; Environmental Sciences