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Publications (15)
There is a research gap regarding the role of lone pair electrons of post‐transition metal cations in catalysis field, yet such studies hold significant implications for expanding their applications. Herein, the role of Bi³⁺ ion lone pair electrons in electrocatalytic oxygen reduction reaction (ORR) is elucidated using ternary mullite oxides as pro...
Mn‐based mullite oxides AMn2O5 (A = lanthanide, Y, Bi) is a novel type of ternary catalyst in terms of their electronic and geometric structures. The coexistence of pyramid Mn³⁺–O and octahedral Mn⁴⁺–O makes the d‐orbital selectively active toward various catalytic reactions. The alternative edge‐ and corner‐sharing stacking configuration construct...
Catalytic decomposition of aromatic polluters at room temperature represents a green route for air purification but is currently challenged by the difficulty of generating reactive oxygen species (ROS) on catalysts. Herein, we develop a mullite catalyst YMn2O5 (YMO) with dual active sites of Mn3+ and Mn4+ and use ozone to produce a highly reactive...
Large ambient temperature changes (-20->25 °C) bring great challenges to the purification of the indoor pollutant formaldehyde. Within such a large ambient temperature range, we herein report a manganese-based strategy, that is, a mullite catalyst (YMn2O5) + ozone, to efficiently remove the formaldehyde pollution. At -20 °C, the formaldehyde remova...
A phonon is the medium a bulk material used to exchange energy with the environment and is thus crucial for heterogeneous catalysis. However, a physical correlation between phonons and catalytic processes has not been established yet. Herein, by combining various in situ characterization techniques, we discovered the intrinsic correlations between...
A super-low-temperature ozone decomposition is realized without energy consumption on a ternary oxide catalyst mullite YMn2O5 for the first time. The YMn2O5 oxide catalyzed ozone decomposition from a low temperature of -40 °C with 29% conversion (reaction rate: 1534.2 μmol g-1 h-1) and quickly reached 100% (5459.5 μmol g-1 h-1) when warmed up to -5...
The introduction of sulfur redox electrocatalysts has been considered to be an effective strategy to anchor polysulfides on the cathode and reduce the energy barriers of the reactions. Due to the complexity of sulfur redox reactions (SRR/SER), there exist few descriptors to correlate the catalytic performance and the underlying electronic structure...
Seeking an electrochemical catalyst to accelerate the liquid‐to‐solid conversion of soluble lithium polysulfides to insoluble products is crucial to inhibit the shuttle effect in lithium‐sulfur (Li‐S) batteries and thus increase their practical energy density. We have used Mn‐based mullite (SmMn2O5) as a model catalyst for the sulfur redox reaction...
A high‐surface‐area Ce doped mullite YMn2O5 was developed via a facile hydrothermal approach, which exhibited higher catalytic activity with a long thermal stability towards propane oxidation in regards to pristine mullite YMn2O5. T90 (the temperature at 90 % conversion of reactant) of propane over the mixed oxides is ∼40 °C lower than that over pr...
The development of high efficient oxide catalyst is crucial to remove the aromatics pollutants. Herein, we propose a ternary mullite SmMn2O5 to catalytically oxidize benzene and toluene at a low temperature. Through a joint exploration of experimental characterizations and density functional theory calculations, the active species on the surface of...
Revealing the catalytic oxidation mechanism of volatile organic compounds (VOCs) is insightful for the development of efficient catalysts. However, due to the complicated interactions and a large number of intermediate species during the reactions, the analysis of the entire reaction mechanism (including the activation modes of reactant molecules a...
Mn-based mullite catalyst GdMn2O5 is developed via the hydrothermal method to efficiently remove volatile organic compound acetone with a high efficiency and stability in total oxidation. The T90 over GdMn2O5 approaches to 160 s°C in contrast to 191 °C over 1 wt % Pt/Al2O3. The catalytic performance maintains after reaction at 200 °C for 260 h with...
