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已有 1055 次阅读 2021-9-26 15:51 |个人分类:发表作品|系统分类:论文交流

发表期刊:Angewandte Chemie

论文题目:Tetrazole-Functionalized Zirconium Metal-Organic Cages for Efficient C2H2/C2H4 and C2H2/CO2 Separations

论文作者:Dr. Weidong Fan, Shing Bo Peh, Dr. Zhaoqiang Zhang, Dr. Hongye Yuan, Ziqi Yang, Dr. Yuxiang Wang, Prof. Kungang Chai, Prof. Daofeng Sun, Prof. Dan Zhao

发表日期:August 2, 2021

论文摘要:Microporous Materials In their Communication on page 17338, Dan Zhao et al. report tetrazole-functionalized zirconium metal−organic cages for efficient C2H2/C2H4 and C2H2/CO2 separations.


发表期刊:Advanced Materials

论文题目:Active Metal Catalysts: Phase Coexistence and Structural Dynamics of Redox Metal Catalysts Revealed by Operando TEM

论文作者:Xing Huang, Travis Jones, Alexey Fedorov, Ramzi Farra, Christophe Copéret, Robert Schlögl, Marc-Georg Willinger

发表日期:August 5, 2021

论文摘要:The active state of heterogeneous catalysts is typically metastable and can only be generated under actual reaction conditions. In article number 2101772, Xing Huang, Marc-Georg Willinger, and co-workers report an operando transmission electron microscopy study to characterize chemical dynamics and surface sites of metal catalysts, as well as their correlations to catalytic activity under relevant redox reactions, providing new insights into the functioning state of active metal catalysts and underlining the importance of chemical dynamics for the formation and constant re-generation of transient active sites during catalysis.


发表期刊:The Journal of Physical Chemistry Letters

论文题目:Activating Basal Surface of Palladium by Electronic Modulation via Atomically Dispersed Nitrogen Doping for High-Efficiency Hydrogen Evolution Reaction

论文作者:Qianqian Yao, Kai Yan, Wenpeng Zhu, and Yue Zheng

发表日期:August 5, 2019

论文摘要:Surface doping by atomically dispersed heteroatoms has become one of the most promising strategies for facilitating the catalytic activity of non-noble transition metals to replace platinum-based catalysts in the hydrogen evolution reaction (HER). However, the underlying mechanism for the atomically dispersed heteroatoms to modulate the electronic structure and the HER activity of a metal surface is still ambiguous. Moreover, the active catalytic region is limited by the small fraction of doped atoms, and the remaining basal surface is inactivated. Here, we demonstrate that the nitrogen doping is atomically dispersed on the palladium surface, which can achieve the near-thermoneutral hydrogen adsorption and promote the HER activity of the basal surface. The theoretical modeling reveals that the dispersed nitrogen atoms attract electrons from palladium and downdrift the d-band center for accelerating the hydrogen desorption. Our work offers understandings of atomically dispersed nitrogen doping on the surface of transition metals and paves the way for a further optimization of nonprecious-metal HER electrocatalysts.


发表期刊:Nano Letters

论文题目:Self-Assembly of Peptide Hierarchical Helical Arrays with Sequence-Encoded Circularly Polarized Luminescence

论文作者:Qing Li, Jiaxing Zhang, Yuefei Wang, Gong Zhang, Wei Qi, Shengping You, Rongxin Su, Zhimin He

发表日期:August 11, 2021

论文摘要:Self-assembled peptide materials with sequence-encoded properties have attracted great interest. Despite their intrinsic chirality, the generation of circularly polarized luminescence (CPL) based on the self-assembly of simple peptides has been rarely reported. Here, we report the self-assembly of peptides into hierarchical helical arrays (HHAs) with controlled supramolecular handedness. The HHAs can emit full-color CPL signals after the incorporation of various achiral fluorescent molecules, and the glum value is 40 times higher than that of the CPL signal from the solutions. By simply changing the amino acid sequence of the peptides, CPL signals with opposite handedness can be generated within the HHAs. The peptide HHAs can provide hydrophobic pockets to accommodate the fluorescent molecules with helical arrangement through strong aromatic stacking interactions, which are responsible for the CPL signals. This work provides a pathway to construct highly ordered chiral materials, which have broad applications in the chiroptical field.



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