The polarization switching plays a crucial role in controlling the final products in the catalytic pro-cess.The effect of polarization orientation on nitrogen reduction was investigated by anchoring transition metal a...The polarization switching plays a crucial role in controlling the final products in the catalytic pro-cess.The effect of polarization orientation on nitrogen reduction was investigated by anchoring transition metal atoms to form active centers on ferroelectric material In_(2)Se_(3).During the polariza-tion switching process,the difference in surface electrostatic potential leads to a redistribution of electronic states.This affects the interaction strength between the adsorbed small molecules and the catalyst substrate,thereby altering the reaction barrier.In addition,the surface states must be considered to prevent the adsorption of other small molecules(such as *O,*OH,and *H).Further-more,the V@↓-In_(2)Se_(3) possesses excellent catalytic properties,high electrochemical and thermody-namic stability,which facilitates the catalytic process.Machine learning also helps us further ex-plore the underlying mechanisms.The systematic investigation provides novel insights into the design and application of two-dimensional switchable ferroelectric catalysts for various chemical processes.展开更多
A new FeSe-based superconductor （C2H8N2）x FeSe with ethylenediamine intercalated into FeSe was suc- cessfully synthesized by the solvothermal method, which is the first superconducting instance by metal-free organic...A new FeSe-based superconductor （C2H8N2）x FeSe with ethylenediamine intercalated into FeSe was suc- cessfully synthesized by the solvothermal method, which is the first superconducting instance by metal-free organic molecule intercalation. Elemental analysis and TG-IR-GC/MS data re- veal that the ethylenediamine molecules in the interlayer space are separate and intact. The X-ray diffraction （XRD） pattern indicates that the intercalation compound is an orthorhombic lattice rather than a tetragonal lattice applying to almost all the previous FeSe-based superconductors at room tempera- ture. The magnetism measurements display a sharp super- conducting transition at -10 K which is assigned to （C2H8N2）xFeSe, and a tiny drop in susceptibility at -30 K.展开更多
文摘The polarization switching plays a crucial role in controlling the final products in the catalytic pro-cess.The effect of polarization orientation on nitrogen reduction was investigated by anchoring transition metal atoms to form active centers on ferroelectric material In_(2)Se_(3).During the polariza-tion switching process,the difference in surface electrostatic potential leads to a redistribution of electronic states.This affects the interaction strength between the adsorbed small molecules and the catalyst substrate,thereby altering the reaction barrier.In addition,the surface states must be considered to prevent the adsorption of other small molecules(such as *O,*OH,and *H).Further-more,the V@↓-In_(2)Se_(3) possesses excellent catalytic properties,high electrochemical and thermody-namic stability,which facilitates the catalytic process.Machine learning also helps us further ex-plore the underlying mechanisms.The systematic investigation provides novel insights into the design and application of two-dimensional switchable ferroelectric catalysts for various chemical processes.
基金supported by the National Natural Science Foundation of China (21671182)
文摘A new FeSe-based superconductor （C2H8N2）x FeSe with ethylenediamine intercalated into FeSe was suc- cessfully synthesized by the solvothermal method, which is the first superconducting instance by metal-free organic molecule intercalation. Elemental analysis and TG-IR-GC/MS data re- veal that the ethylenediamine molecules in the interlayer space are separate and intact. The X-ray diffraction （XRD） pattern indicates that the intercalation compound is an orthorhombic lattice rather than a tetragonal lattice applying to almost all the previous FeSe-based superconductors at room tempera- ture. The magnetism measurements display a sharp super- conducting transition at -10 K which is assigned to （C2H8N2）xFeSe, and a tiny drop in susceptibility at -30 K.
