AI Article Synopsis
- Researchers have developed a cost-effective and highly efficient catalyst, Ce/Na-ZSM-5, for oxidizing formaldehyde (HCHO) at room temperature, showing potential for environmental applications.
- This catalyst has nearly atomic-level dispersion and achieves a remarkable 95% HCHO removal rate, maintaining approximately 90% efficiency over 100 hours of testing.
- The study also proposes a reasonable reaction mechanism for HCHO oxidation, enhancing our understanding of catalyst design for environmental cleanup.
Article Abstract
Formaldehyde oxidation at room temperature with low-cost catalysts is one of the main development directions of environmental governance. Herein, we developed a low-cost and superior performance highly dispersed Ce on Na-ZSM-5 (Ce/Na-ZSM-5) catalyst, which is close to atomic dispersion for indoor formaldehyde (HCHO) oxidation at low temperature. The highly dispersed catalyst that was similar to atomic dispersion was characterized by EXAFS and AC HAADF-STEM. The optimal Ce/Na-ZSM-5 displays high HCHO removal performance (95%, at room temperature), as well as 100 h stable testing (∼90% HCHO removal). In addition, a reasonable reaction mechanism of the HCHO catalytic oxidation is proposed based on the DRIFT spectra and DFT calculation. This work provides a new way to design an efficient catalyst for the complete oxidation of formaldehyde.
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| http://dx.doi.org/10.1039/d3dt00403a | DOI Listing |
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