Fabrication of Pd/CeO2 nanocubes as highly efficient catalysts for degradation of formaldehyde at room temperature

Chen, Yafeng1; Jiang, Guimin2,3; Cui, Xiangzhi4; Zhang, Zuotai2,3; Hou, Xinmei1

2021-08-01

10.1039/d1cy00766a

Catalysis Science & Technology   影响因子和分区

2044-4753

2044-4761

Eliminating indoor formaldehyde (HCHO) pollution at room temperature is highly needed to improve the environment while saving energy. Herein, Pd/CeO2 catalysts with different morphologies of the CeO2 support were employed to investigate their performance for HCHO oxidation. The Pd/CeO2 nanocube (Pd/CeO2-C) catalyst exhibited excellent catalytic activity compared to commercial CeO2 and CeO2 nanorods. HCHO can be completely converted into CO2 and H2O over the Pd/CeO2-C (0.64 wt% Pd) catalyst at a weight hourly space velocity of 36 000 mL g(-1) h(-1) at room temperature. Multiple characterization results confirmed that the strong interfacial interaction between Pd and the CeO2-C support guarantees a high percentage of metallic Pd on the CeO2-C surface and its high dispersion, which is crucial for the oxidation of formaldehyde at low temperature. The in situ diffuse reflectance infrared Fourier transform results indicated that CO, formate and dioxymethylene species are the main intermediates over the Pd/CeO2-C catalyst, and the active O species is responsible for their decomposition and oxidation. This work may promote the practical application of high performance Pd-based catalysts for indoor HCHO purification and related catalytic processes.

SCI ; EI

英语

通讯

National Science Fund for Distinguished Young Scholars[52025041] ; National Natural Science Foundation of China[51974021] ; Shenzhen Science and Technology Innovation Committee["KQJSCX2018032215150778","JCYJ20180504165648211"]

Chemistry

Chemistry, Physical

WOS:000696588400001

ROYAL SOC CHEMISTRY

20214311050368

Catalyst activity ; Formaldehyde ; Oxidation ; Palladium ; Reaction intermediates ; Temperature

Precious Metals:547.1 ; Thermodynamics:641.1 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Organic Compounds:804.1 ; Inorganic Compounds:804.2

Web of Science

1.Univ Sci & Technol Beijing, Beijing Adv Innovat Ctr Mat Genome Engn, Collaborat Innovat Ctr Steel Technol, Beijing 100083, Peoples R China
2.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol, Key Lab Municipal Solid Waste Recycling Technol &, Shenzhen 518055, Peoples R China
4.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

Chen, Yafeng,Jiang, Guimin,Cui, Xiangzhi,et al. Fabrication of Pd/CeO2 nanocubes as highly efficient catalysts for degradation of formaldehyde at room temperature[J]. Catalysis Science & Technology,2021,11:6732-6741.

Chen, Yafeng,Jiang, Guimin,Cui, Xiangzhi,Zhang, Zuotai,&Hou, Xinmei.(2021).Fabrication of Pd/CeO2 nanocubes as highly efficient catalysts for degradation of formaldehyde at room temperature.Catalysis Science & Technology,11,6732-6741.

Chen, Yafeng,et al."Fabrication of Pd/CeO2 nanocubes as highly efficient catalysts for degradation of formaldehyde at room temperature".Catalysis Science & Technology 11(2021):6732-6741.