2020同步年報

Energy Science 059 Fig. 1 : (a) Schematic representation of NiO T Pd-T NC. X-ray photoelectron spectra (APXPS) in situ at ambient pressure of NiO T Pd-T at (b) Ni 2p and (c) Pd 3d regions. [Reproduced from Ref. 1] Fig. 2 : (a) Faradaic efficiency of methane of a Cu 68 Ag 32 catalyst and tensile strain at planes (111) and (200) caused by a CuAg alloy as a function of po- tential. XANES spectra of (b) Ag K-edge for silver-modified Cu nanowire samples and (c) Cu K-edge for Cu nanowires, silver-modified Cu nanowire samples and corresponding references. [Reproduced from Ref. 2] efficiency ~60%, which is nearly three times that of primitive Cu nanowires ( Fig. 2(a) ). Most importantly, it surpasses the most efficient catalysts for producing methane. Using XANES techniques in situ at NSRRC beamlines TLS 01C1 and TLS 01C2 , they unveiled the valence state of Cu at the potential range of forming a CuAg alloy and tracked the structural changes to estab- lish a structure-performance relation. In brief, both of these pioneer works provide a deep understanding of NC design based on metal-metal and metal-oxide heterojunctions for both thermal and electrocatalytic conversion of CO 2 . (Reported by Tsan-Yao Chen, National Tsing Hua University) This report features the works of (1) Tsan-Yao Chen and his collaborators published in J. Mater. Chem. A 8 , 12744 (2020) and (2) Hao Ming Chen and his collab- orators published in J. Am. Chem. Soc. 142 , 12119 (2020). TLS 01C1 SWLS – EXAFS TLS 01C2 SWLS − X-ray Powder Diffraction TLS 24A1 BM − (WR-SGM) XPS, UPS, XAS, APXPS • XANES, EXAFS, XRD, XPS, UPS • Materials Science, Chemistry, Sur- face, Interface and Thin-film Chemis- try, Condensed-matter Physics References 1. C. Yan, C.-H. Wang, M. Lin, D. Bhalothia, S.-S. Yang, G.-J. Fan, J.-L. Wang, T.-S. Chan, Y.-l. Wang, X. Tu, S. Dai, K.-W. Wang, J.-H. He, and T.- Y. Chen, J. Mater. Chem. A 8 , 12744 (2020). 2. C.-J. Chang, S.-C. Lin, H.-C. Chen, J. Wang, K. J. Zheng, Y. Zhu, and H. M. Chen, J. Am. Chem. Soc. 142 , 12119 (2020).