Asymmetric dinitrogen-coordinated nickel single-atomic sites for ...
2023年6月24日 · Operando SR-IRAS and XAFS characterization. Systematic spectroscopic and electrochemical analyses have demonstrated the fine structure and better CO 2 RR …
Nickel dual-atom sites for electrochemical carbon dioxide reduction
2022年8月18日 · According to theoretical calculations and in situ XAFS techniques, Ni dual-atom sites allow a significantly boosted electrochemical CO 2 reduction through sufficient CO 2 …
Developing Ni single-atom sites in carbon nitride for efficient ...
2023年11月6日 · Importantly, through in situ XAFS and theoretical calculations, we reveal the structural evolution of Ni single-atom active sites (Ni-N 3 → O 1-Ni-N 2 → HOO-Ni-N 2) in …
(a) Ni K-edge XANES spectra of HS-NiPc and NiPc. (b
In addition, in the extended X-ray absorption fine structure (EXAFS) spectra (Figure 1 b), the main peaks of NiPc and HS-NiPc at approximately 1.46 Å (Ni−N bond) exhibit similar intensity,...
XAFS database - IXAS Portal
Welcome to the IXAS XAFS database! This EXAFS database, which consists of just about every scan of data ever taken by Farrel Lytle, is a service of the International X-ray Absorption …
Unraveling the Dynamic Structural Evolution of Phthalocyanine …
2022年10月1日 · Here we employ operando high-energy resolution fluorescence-detected X-ray absorption spectroscopy (HERFD-XAS) to track the structural evolution of Ni (II) …
Modulating the Density of Catalytic Sites in Multiple-Component ...
2023年9月6日 · In the multiple H 2 Pc/NiPc-COFs, the electron-donating features of the H 2 Pc units provide electron transport to the NiPc centers and thus improved the binding ability of CO …
Atomically dispersed metal sites in COF-based nanomaterials for ...
2023年4月1日 · Furthermore, advanced characterization technologies, such as scanning transmission electron microscopy (STEM) and X-ray absorption fine structure (XAFS) …
中南大学刘敏团队Adv. Funct. Mater.：酞菁镍配体工程，促进电催 …
酞菁镍 (NiPc)因其具有可以调节的镍活性中心，而被认为是实现上述目标的一个极具前景的候选品。然而，原始NiPc由于在Ni位点处的CO2吸附和活化性能较差，因此通常表现出较低 …
Residual Ni species after Ni removal treatment of carbon nanofibers have been investigated by use of XAFS analyses. Most of the Ni impurities are in Ni monomer which is located on defects …