2019年9月26日 · Ex situ XAS provides additional structural insights into the local structure of MoS 2, confirming that the 1T′ phase is the correct assignment of the nanosheet MoS 2 and revealing an irreversible local distortion that occurs during cycling. This local distortion is likely a factor in the increased capacity fade observed in the nanosheet cells.

2024年3月15日 · X-ray absorption spectroscopy (XAS), uptake kinetics tests, and molecular dynamics (MD) simulations reveal that Sm 3+, being less dehydrated, enters the 2D channel much faster than the other REE ions which governs its dominating uptake.

将调制激发光谱 (MES) 与时间分辨 X 射线吸收光谱 (XAS) 结合应用于非促进和共同促进的 Mo 基加氢处理催化剂（即Mo 和 CoMo 催化剂），以研究在H 2 S 和 H 2 O影响下的活性位点组成。

2020年8月17日 · Using in situ X-ray absorption spectroscopy (XAS), we show that the dominant active site for HER is the Ni single atom in its intrinsic environment in an acidic electrolyte, while, in alkaline...

2019年2月28日 · Synchrotron-based X-ray absorption spectroscopy (XAS) was used to characterize the local structure of 1T-MoS 2 and XO@1T-MoS 2 analogs.

2021年12月23日 · In this work, d. functional theory (DFT), catalytic activity tests, and in-situ X-ray absorption spectroscopy (XAS) was performed to gain detailed insights into the activity and stability of MoS2, Ni-MoS2, and Co-MoS2 catalysts used for hydrodeoxygenation (HDO) of ethylene glycol upon variation of the partial pressures of H2O and H2S.

2016年6月10日 · To better understand this mechanism, in-situ characterization with element specific X-ray absorption spectroscopy (XAS), specifically X-ray absorption near-edge spectroscopy (XANES) and extended X-ray absorption fine-structure spectroscopy (EXAFS) was used in this study.

2020年10月1日 · The XAFS and XAS results reveal that the Co single atom was anchored on the Mo atop sites with Co 2+ valence. DFT calculations confirm that the active sites are S atoms bonding with Co single atom, which result in the enhanced HER performance. This work shows that the Co 1 /MoS 2 nanosheet is a highly potential electrocatalyst used for HER.

2019年9月26日 · Here, we combine operando Mo K- and S K-edge X-ray absorption spectroscopy (XAS) with first-principles simulations to track changes in the electronic structure of MoS2 nanosheets during CO2RR.

2025年2月1日 · In this study, we employed X-ray absorption spectroscopy (XAS) to study iron-molybdenum and molybdenum sulfides obtained by a microwave irradiation synthetic approach. Operando XAS measurements in an acidic environment revealed sulfur-defective amorphous MoS x and FeS phases.