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Won Hui DOH

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Articles

Adsorbate-driven reactive interfacial Pt-NiO1−x nanostructure formation on the Pt3Ni(111) alloy surface

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By Jeongjin Kim, Won Hui DOH, Woong Hyeon Park, Myung Cheol Noh
| Science Magazine Verified
The origin of the synergistic catalytic effect between metal catalysts and reducible oxides has been debated for decades. Clarification of this effect, namely, the strong metal-support interaction (SMSI), requires an understanding of the geometric and electronic structures of metal-metal oxide interfaces under operando conditions. We show that the inherent lattice mismatch of bimetallic materials selectively creates surface segregation of subsurface metal atoms.
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Effect of the metal-support interaction on the activity and selectivity of methanol oxidation over Au supported on mesoporous oxides

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By Sunyoung Oh, Chan Ho Jung, Won Hui DOH, You Kyung Kim
| Royal Society of Chemistry Verified
To elucidate the factors affecting the catalytic properties of supported Au catalysts on the metal oxide support we investigated Au NPs deposited on crystallized mesoporous transition-metal oxides (m-oxides: Co O , NiO, and α-Fe O ) prepared using the nanocasting method. The metal–oxide interaction in Au/mesoporous oxides resulted in higher catalytic activity for converting methanol to CO as a full oxidation product than pure m-oxides.
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