Epitaxial-strain engineering of supported tensile noble metallene oxides for enhanced oxidation catalysis
Abstract
Supported two-dimensional noble metal oxides (metallene oxides) hold great promise for heterogeneous catalysis owing to their maximized surface exposure and tunable electronic structures. However, their high surface energy and low oxidation potentials make them intrinsically unstable under reaction conditions. Here, we report an epitaxial strain strategy to stabilize and modulate the electronic structure of supported PtO ₂ metallene oxide. By employing rutile TiO ₂ and rutile SnO ₂ supports with distinct lattice parameters, we achieve epitaxial growth of PtO ₂ metallene oxide layers with controlled strain states, where the larger-lattice SnO ₂ substrate imposes biaxial tensile strain on PtO ₂ . The tensile-strained PtO ₂ /SnO ₂ exhibits a reconfigured Pt–O electronic environment that simultaneously improves structural resilience and enhances the intrinsic reactivity of PtO ₂ , delivering markedly improved methane oxidation performance with a T ₉₀ of 370 °C (versus 434 °C for PtO ₂ /TiO ₂ and 469 °C for PtO x /Al ₂ O ₃ ) and <1% conversion loss over 38 h under both dry and wet conditions. Moreover, this epitaxial strain strategy is generalizable to other environmentally relevant oxidation reactions and rutile-type noble metal oxides, establishing tensile strain imposed by epitaxial lattice matching as a general principle for stabilizing atomically thin noble metal oxides while tuning their electronic structure.
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BibTeX
@article{zhang2026epitaxialstrain,
title = {{Epitaxial-strain engineering of supported tensile noble metallene oxides for enhanced oxidation catalysis}},
author = {Shoujie Zhang and Dong Lin and Anwen Yu and Haifeng Qi and Zhongyu Jiang and Xiuhui Zheng and Xiang Feng and Yongning Yang and Zhikang Fu and Sheng Dai and Lina Li and Aiyong Wang and Yanglong Guo and Wangcheng Zhan and Li Wang and Yun Guo and Xuan Tang},
journal = {Nature Communications},
year = {2026},
month = oct,
doi = {10.1038/s41467-026-78119-2},
url = {https://www.nature.com/articles/s41467-026-78119-2},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Epitaxial-strain engineering of supported tensile noble metallene oxides for enhanced oxidation catalysis
AU - Shoujie Zhang
AU - Dong Lin
AU - Anwen Yu
AU - Haifeng Qi
AU - Zhongyu Jiang
AU - Xiuhui Zheng
AU - Xiang Feng
AU - Yongning Yang
AU - Zhikang Fu
AU - Sheng Dai
AU - Lina Li
AU - Aiyong Wang
AU - Yanglong Guo
AU - Wangcheng Zhan
AU - Li Wang
AU - Yun Guo
AU - Xuan Tang
PY - 2026
DA - 2026/10/13
JO - Nature Communications
DO - 10.1038/s41467-026-78119-2
UR - https://www.nature.com/articles/s41467-026-78119-2
AB - Supported two-dimensional noble metal oxides (metallene oxides) hold great promise for heterogeneous catalysis owing to their maximized surface exposure and tunable electronic structures. However, their high surface energy and low oxidation potentials make them intrinsically unstable under reaction conditions. Here, we report an epitaxial strain strategy to stabilize and modulate the electronic structure of supported PtO ₂ metallene oxide. By employing rutile TiO ₂ and rutile SnO ₂ supports with distinct lattice parameters, we achieve epitaxial growth of PtO ₂ metallene oxide layers with controlled strain states, where the larger-lattice SnO ₂ substrate imposes biaxial tensile strain on PtO ₂ . The tensile-strained PtO ₂ /SnO ₂ exhibits a reconfigured Pt–O electronic environment that simultaneously improves structural resilience and enhances the intrinsic reactivity of PtO ₂ , delivering markedly improved methane oxidation performance with a T ₉₀ of 370 °C (versus 434 °C for PtO ₂ /TiO ₂ and 469 °C for PtO x /Al ₂ O ₃ ) and <1% conversion loss over 38 h under both dry and wet conditions. Moreover, this epitaxial strain strategy is generalizable to other environmentally relevant oxidation reactions and rutile-type noble metal oxides, establishing tensile strain imposed by epitaxial lattice matching as a general principle for stabilizing atomically thin noble metal oxides while tuning their electronic structure.
SN - 2041-1723
ER -