Unique nanofoams consisting of interweaved ultrathin graphene confining Zn–N–C dipoles (ZnNG) are constructed via calcination of Zn-coordinated precursor.Due to the introduction of local polar Zn–N–C configuration...Unique nanofoams consisting of interweaved ultrathin graphene confining Zn–N–C dipoles (ZnNG) are constructed via calcination of Zn-coordinated precursor.Due to the introduction of local polar Zn–N–C configurations,with hypersensitivity for mechanical stress,the piezoelectricity is created on the nonpiezoelectric graphene,and the hierarchical ZnNG exhibits obvious piezocatalytic activity of water splitting for H_(2) production even under mild agitation.The corresponding rate of H_(2) production is about 14.65 μmol g^(-1)h^(-1).It triggers a breakthrough in piezocatalytic H_(2) evolution under low-frequency vibration,and takes a significant step forward for piezocatalysis towards practical applications.Furthermore,the presented concept of confining atomic polar configuration for engineering piezoelectricity would open up new horizon for constructing new-type piezoelectrics based on both piezoelectric and nonpiezoelectric materials.展开更多
FOR a linear connected simple Lie group G other than split G<sub>2</sub>, in order to obtain formulas forthe action of intertwining operators on certain subspaces of standard induced representations ofG, B...FOR a linear connected simple Lie group G other than split G<sub>2</sub>, in order to obtain formulas forthe action of intertwining operators on certain subspaces of standard induced representations ofG, Baldoni-Silva and Knapp discussed the occurrence of K types in a tensor product. Inthis letter, the author has obtained similar results about the occurrence of K types in a展开更多
基金supported by the National Natural Science Foundation of China (21802007)the Natural Science Foundation of Hunan Province (2020JJ5615)+1 种基金the Scientific Research Project of Hunan Provincial Department of Education (20B066)the Open Project Program of the State Key Laboratory of Photocatalysis on Energy and Environment (SKLPEE-202001), Fuzhou University。
文摘Unique nanofoams consisting of interweaved ultrathin graphene confining Zn–N–C dipoles (ZnNG) are constructed via calcination of Zn-coordinated precursor.Due to the introduction of local polar Zn–N–C configurations,with hypersensitivity for mechanical stress,the piezoelectricity is created on the nonpiezoelectric graphene,and the hierarchical ZnNG exhibits obvious piezocatalytic activity of water splitting for H_(2) production even under mild agitation.The corresponding rate of H_(2) production is about 14.65 μmol g^(-1)h^(-1).It triggers a breakthrough in piezocatalytic H_(2) evolution under low-frequency vibration,and takes a significant step forward for piezocatalysis towards practical applications.Furthermore,the presented concept of confining atomic polar configuration for engineering piezoelectricity would open up new horizon for constructing new-type piezoelectrics based on both piezoelectric and nonpiezoelectric materials.
文摘FOR a linear connected simple Lie group G other than split G<sub>2</sub>, in order to obtain formulas forthe action of intertwining operators on certain subspaces of standard induced representations ofG, Baldoni-Silva and Knapp discussed the occurrence of K types in a tensor product. Inthis letter, the author has obtained similar results about the occurrence of K types in a
