Journal ArticleOpen Access
Spatially Decoupled H<sub>2</sub>O<sub>2</sub> Activation Pathways and Multi‐Enzyme Activities in Rod‐Shaped CeO<sub>2</sub> with Implications for Facet Distribution
Authors
Tianqi Cheng, Xinyu Wu, Yuwei Qiu, Bo Yuan, …
Author Affiliations
City University of Hong Kong, Hong Kong University of Science and Technology, Metropolitan University, Chengdu Institute of Information Technology (China), ...
Published InSmall
Year2024
Citations26
Abstract
Abstract CeO 2 , particularly in the shape of rod, has recently gained considerable attention for its ability to mimic peroxidase (POD) and haloperoxidase (HPO). However, this multi‐enzyme activities unavoidably compete for H 2 O 2 affecting its performance in relevant applications. The lack of consensus on facet distribution in rod‐shaped CeO 2 further complicates the establishment of structure‐activity correlations, presenting challenges for progress in the field. In this study, the HPO‐like activity of rod‐shaped CeO 2 is successfully enhanced while maintaining its POD‐like activity through a facile post‐calcination method. By studying the spatial distribution of these two activities and their exclusive H 2 O 2 activation pathways on CeO 2 surfaces, this study finds that the increased HPO‐like activity…
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