The DOI matches its Crossref record; 35 of the 35 references it cites were found in a registry or an index.
Support Morphology-Dependent Catalytic Activity of Pd/CeO2for Formaldehyde Oxidation
Abstract
To eliminate indoor formaldehyde (HCHO) pollution, Pd/CeO2 catalysts with different morphologies of ceria support were employed. The palladium nanoparticles loaded on {100}-faceted CeO2 nanocubes exhibited much higher activity than those loaded on {111}-faceted ceria nanooctahedrons and nanorods (enclosed by {100} and {111} facets). The HCHO could be fully converted into CO2 over the Pd/CeO2 nanocubes at a GHSV of 10,000 h(-1) and a HCHO inlet concentration of 600 ppm at ambient temperature. The prepared catalysts were characterized by a series of techniques. The HRTEM, ICP-MS and XRD results confirmed the exposed facets of the ceria and the sizes (1-2 nm) of the palladium nanoparticles with loading amounts close to 1%. According to the Pd 3d XPS and H2-TPR results, the status of the Pd-species was dependent on the morphologies of the supports. The {100} facets of ceria could maintain the metallic Pd species rather than the {111} facets, which promoted HCHO catalytic combustion. The Raman and O 1s XPS results revealed that the nanorods with more defect sites and oxygen vacancies were responsible for the easy oxidation of the Pd-species and low catalytic activity.
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Metadata
- Authors
- Tan, H., Wang, J., Yu, S., & Zhou, K.
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 2015-07-10
- Volume
- 49
- Issue
- 14
- Pages
- 8675-8682
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W2345277961
- Cited by
- 371
- References
- 35
- FWCI
- 11.06
- Type
- journal article
- Language
- en
- Open access
- closed
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