期刊
SCIENCE
卷 367, 期 6476, 页码 428-+出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aay2474
关键词
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资金
- National Natural Science Foundation of China [51390474, 91645103, 11574340, 21773287, 51801182, 11604357, 51872260, 11327901]
- Zhejiang Provincial Natural Science Foundation [LD19B030001]
- Ministry of Science and Technology of China [2016YFE0105700]
- Fundamental Research Funds for the Central Universities
- Natural Science Foundation of Shanghai [16ZR1443200]
- Youth Innovation Promotion Association CAS
- China Postdoctoral Science Foundation [2018M642407, 2019T120502]
Imaging a reaction taking place at the molecular level could provide direct information for understanding the catalytic reaction mechanism. We used in situ environmental transmission electron microscopy and a nanocrystalline anatase titanium dioxide (001) surface with (1 x 4) reconstruction as a catalyst, which provided highly ordered four-coordinated titanium active rows to realize real-time monitoring of water molecules dissociating and reacting on the catalyst surface. The twin-protrusion configuration of adsorbed water was observed. During the water-gas shift reaction, dynamic changes in these structures were visualized on these active rows at the molecular level.
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