Investigating the role of undercoordinated Pt sites at the surface of layered PtTe2 for methanol decomposition

Jing Wen Hsueh, Lai Hsiang Kuo, Po Han Chen, Wan Hsin Chen, Chi Yao Chuang, Chia Nung Kuo, Chin Shan Lue, Yu Ling Lai, Bo Hong Liu, Chia Hsin Wang, Yao Jane Hsu, Chun Liang Lin, Jyh Pin Chou, Meng Fan Luo

Research output: Contribution to journalArticlepeer-review


Transition metal dichalcogenides, by virtue of their two-dimensional structures, could provide the largest active surface for reactions with minimal materials consumed, which has long been pursued in the design of ideal catalysts. Nevertheless, their structurally perfect basal planes are typically inert; their surface defects, such as under-coordinated atoms at the surfaces or edges, can instead serve as catalytically active centers. Here we show a reaction probability > 90 % for adsorbed methanol (CH3OH) on under-coordinated Pt sites at surface Te vacancies, produced with Ar+ bombardment, on layered PtTe2 — approximately 60 % of the methanol decompose to surface intermediates CHxO (x = 2, 3) and 35 % to CHx (x = 1, 2), and an ultimate production of gaseous molecular hydrogen, methane, water and formaldehyde. The characteristic reactivity is attributed to both the triangular positioning and varied degrees of oxidation of the under-coordinated Pt at Te vacancies.

Original languageEnglish
Article number653
JournalNature Communications
Issue number1
StatePublished - Dec 2024


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