| Title | Visualizing Eigen/Zundel cations and their interconversion in monolayer water on metal surfaces |
| Authors | Tian, Ye Hong, Jiani Cao, Duanyun You, Sifan Song, Yizhi Cheng, Bowei Wang, Zhichang Guan, Dong Liu, Xinmeng Zhao, Zhengpu Li, Xin-Zheng Xu, Li-Mei Guo, Jing Chen, Ji Wang, En-Ge Jiang, Ying |
| Affiliation | Peking Univ, Int Ctr Quantum Mat, Sch Phys, Beijing 100871, Peoples R China Beijing Inst Technol, Sch Mat Sci & Engn, Beijing Key Lab Environm Sci & Engn, Beijing 100081, Peoples R China Beijing Inst Technol, Chongqing Innovat Ctr, Chongqing 401120, Peoples R China Soochow Univ, Inst Funct Nano & Soft Mat, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Peoples R China Peking Univ, Sch Phys, Beijing 100871, Peoples R China Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China Peking Univ, State Key Lab Mesoscop Phys, Sch Phys, Beijing 100871, Peoples R China Peking Univ, Frontiers Sci Ctr Nanooptoelect, Sch Phys, Beijing 100871, Peoples R China Peking Univ, Interdisciplinary Inst Light Element Quantum Mat, Beijing 100871, Peoples R China Peking Univ, Res Ctr Light Element Adv Mat, Beijing 100871, Peoples R China Beijing Normal Univ, Coll Chem, Beijing 100875, Peoples R China Chinese Acad Sci, Inst Phys, Songshan Lake Mat Lab, Shenyang 110036, Peoples R China Liaoning Univ, Sch Phys, Shenyang 110036, Peoples R China Univ Chinese Acad Sci, CAS Ctr Excellence Topol Quantum Computat, Beijing 100190, Peoples R China |
| Keywords | PROTON-TRANSFER INTERFACIAL WATER IR SPECTROSCOPY EXCESS PROTON TRANSPORT |
| Issue Date | 15-Jul-2022 |
| Publisher | SCIENCE |
| Abstract | The nature of hydrated proton on solid surfaces is of vital importance in electrochemistry, proton channels, and hydrogen fuel cells but remains unclear because of the lack of atomic-scale characterization. We directly visualized Eigen-and Zundel-type hydrated protons within the hydrogen bonding water network on Au(111) and Pt(111) surfaces, using cryogenic qPlus-based atomic force microscopy under ultrahigh vacuum. We found that the Eigen cations self-assembled into monolayer structures with local order, and the Zundel cations formed long-range ordered structures stabilized by nuclear quantum effects. Two Eigen cations could combine into one Zundel cation accompanied with a simultaneous proton transfer to the surface. Moreover, we revealed that the Zundel configuration was preferred over the Eigen on Pt(111), and such a preference was absent on Au(111). |
| URI | http://hdl.handle.net/20.500.11897/649698 |
| ISSN | 0036-8075 |
| DOI | 10.1126/science.abo0823 |
| Indexed | SCI(E) |
| Appears in Collections: | 量子材料科学中心 物理学院 人工微结构和介观物理国家重点实验室 |
