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:
South China University of Technology South China Univ Technol, Sch Mat Sci & Engn, Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou 510641, Guangdong, Peoples R China.
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 (NSFC)
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