Tuning surface oxides on PdIn(111) alloys for selective CO2 activation pathways at ambient pressure

Siwoo Noh; Jiwon Park; Beomgyun Jeong; Han-Koo Lee; Kyuwook Ihm; Ki-jeong Kim; Jouhahn Lee; Seong Hee Park; Jeong Young Park; Jeongjin Kim

doi:10.1039/D5CC03114A

Tuning surface oxides on PdIn(111) alloys for selective CO₂ activation pathways at ambient pressure

Siwoo Noh,†^ad Jiwon Park,

†^b Beomgyun Jeong,^c Han-Koo Lee,^d Kyuwook Ihm,^d Ki-jeong Kim,^d Jouhahn Lee,^c Seong Hee Park,^a Jeong Young Park

*^b and Jeongjin Kim

*^d

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* Corresponding authors

^a Department of Accelerator Science, Korea University, Sejong 30019, South Korea

^b Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
E-mail: jeongypark@kaist.ac.kr

^c Research Center for Materials Analysis, Korea Basic Science Institute (KBSI), Daejeon 34133, South Korea

^d Pohang Accelerator Laboratory, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, South Korea
E-mail: jeongjkim@postech.ac.kr

Abstract

Redox-mediated tuning of surface oxides on PdIn(111) alloys has been elucidated by atomic-scale AP-STM imaging and synchrotron-based AP-XPS. The segregation of Pd–In–O_x nanoclusters onto the topmost layer creates reactive interfacial oxide sites on Pd–In alloy surfaces, which modulate selective reaction pathways of catalytic CO₂ activation under gaseous CO₂ environments.

Chemical Communications

Tuning surface oxides on PdIn(111) alloys for selective CO₂ activation pathways at ambient pressure

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Tuning surface oxides on PdIn(111) alloys for selective CO₂ activation pathways at ambient pressure

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