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