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Updated: Feb 11, 2026

Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
Published on: May 23, 2018
Bifunctional CO oxidation over Mn-mullite anchored Pt sub-nanoclusters via atomic layer deposition
Xiao Liu1, Yuanting Tang2, Meiqing Shen3
1State Key Laboratory of Digital Manufacturing Equipment and Technology , School of Mechanical Science and Engineering , Huazhong University of Science and Technology , Wuhan 430074 , Hubei , People's Republic of China .
Abstract:
CO oxidation is a widely used model system for understanding fundamental aspects of heterogeneous catalysis. While platinum (Pt) continues to be a reference material for CO oxidation catalysis, poisoning of Pt catalysts presents a critical issue that blocks reaction sites and impedes subsequent reaction steps. Fabrication of CO poison-free Pt catalysts remains a great challenge due to its CO-philic nature. Herein, we report a Pt based catalyst to effectively tackle CO poisoning by tightly anchoring Pt sub-nanoclusters onto Mn-mullite oxide (SmMn2O5) via atomic layer deposition. Superior CO oxidation activity has been observed with a significantly lowered light-off temperature and apparent activation energy. In situ diffuse reflectance infrared Fourier transform spectroscopy analysis, oxygen isotope experiments and density functional theory calculations confirm that the low-temperature activity originates from active oxygen atom sources at the bifunctional interface structure.
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