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Hsueh JW, Kuo LH, Chen PH, Chen WH, Chuang CY, Kuo CN, Lue CS, Lai YL, Liu BH, Wang CH, Hsu YJ, Lin CL, Chou JP, Luo MF. Investigating the role of undercoordinated Pt sites at the surface of layered PtTe 2 for methanol decomposition. Nat Commun 2024; 15:653. [PMID: 38253575 PMCID: PMC10803346 DOI: 10.1038/s41467-024-44840-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 01/08/2024] [Indexed: 01/24/2024] Open
Abstract
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.
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Affiliation(s)
- Jing-Wen Hsueh
- Department of Physics, National Central University, No. 300 Jhongda Rd., Jhongli District, Taoyuan City, 320317, Taiwan
| | - Lai-Hsiang Kuo
- Department of Physics, National Central University, No. 300 Jhongda Rd., Jhongli District, Taoyuan City, 320317, Taiwan
| | - Po-Han Chen
- Department of Materials Science and Engineering, National Tsing Hua University, 101, Section 2 Kuang-Fu Road, Hsinchu, 300044, Taiwan
| | - Wan-Hsin Chen
- Department of Electrophysics, National Yang Ming Chiao Tung University, No. 1001 University Rd., Hsinchu, 300039, Taiwan
| | - Chi-Yao Chuang
- Department of Electrophysics, National Yang Ming Chiao Tung University, No. 1001 University Rd., Hsinchu, 300039, Taiwan
| | - Chia-Nung Kuo
- Department of Physics, National Cheng Kung University, No. 1 University Rd., Tainan, 701, Taiwan
- Taiwan Consortium of Emergent Crystalline Materials, National Science and Technology Council, Taipei, 10601, Taiwan
| | - Chin-Shan Lue
- Department of Physics, National Cheng Kung University, No. 1 University Rd., Tainan, 701, Taiwan
- Taiwan Consortium of Emergent Crystalline Materials, National Science and Technology Council, Taipei, 10601, Taiwan
- Program on Key Materials, Academy of Innovative Semiconductor and Sustainable Manufacturing, National Cheng Kung University, Tainan, 701, Taiwan
| | - Yu-Ling Lai
- National Synchrotron Radiation Research Center, 101 Hsin-Ann Rd., Hsinchu Science Park, Hsinchu, 300092, Taiwan
| | - Bo-Hong Liu
- National Synchrotron Radiation Research Center, 101 Hsin-Ann Rd., Hsinchu Science Park, Hsinchu, 300092, Taiwan
| | - Chia-Hsin Wang
- National Synchrotron Radiation Research Center, 101 Hsin-Ann Rd., Hsinchu Science Park, Hsinchu, 300092, Taiwan
| | - Yao-Jane Hsu
- National Synchrotron Radiation Research Center, 101 Hsin-Ann Rd., Hsinchu Science Park, Hsinchu, 300092, Taiwan
| | - Chun-Liang Lin
- Department of Electrophysics, National Yang Ming Chiao Tung University, No. 1001 University Rd., Hsinchu, 300039, Taiwan.
| | - Jyh-Pin Chou
- Department of Physics, National Changhua University of Education, No. 1, Jin-De Rd., Changhua, 50007, Taiwan.
| | - Meng-Fan Luo
- Department of Physics, National Central University, No. 300 Jhongda Rd., Jhongli District, Taoyuan City, 320317, Taiwan.
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