0428同步年報-2021-全

Chemical Science T he Activity Report 2021 editorial committee has carefully selected four outstanding research results from the Chemical Science Archives for all users of the NSRRC. Using X-ray-absorption fine-structure (XAFS) spectroscopy at TPS 44A , Yujie Xiong's team found that the introduced Pd sites are atomically dispersed in the surface lattice of Au nanorods supported on ZnO; this result shows that an atomic-scale dehydrogenation design can realize the direct conversion of methane to high value- added ethene under mild conditions. Yi-Chun Lu's group reported a study of Li-CO 2 cells using ambient-pressure X-ray photoelectron spectroscopy, which is currently set up for user operation at TLS 24A1 . Dun-Yen Kang's group used equipment at TPS 09A to perform time-resolved powder X-ray diffraction measurements under various gases to study the possible structural changes of CAU-10-H, and proposed that a rigid pore structure of metal-organic frameworks under varied gas atmospheres can achieve a high gas-separation performance. Tan Yongwen's group used TLS 01C1 and TLS 16A1 to obtain Mo K-, Ru K-, P K- and S K-edge XAFS spectra of electrocatalysts for the hydrogen-evolution reaction, inferring the coordination environment of the active site; the applied strain was then determined using operational X-ray absorption near- edge structure (XANES) spectroscopy to enhance the accumulation of OH − and HO in sulfur vacancies. (by Chih- Wen Pao)