Two dimensional (2D) materials have attracted intense attention owing to their unique physical and chemical properties and the realization of artificial structure and functionality [1]. Insulating hexagonal boron nitr...Two dimensional (2D) materials have attracted intense attention owing to their unique physical and chemical properties and the realization of artificial structure and functionality [1]. Insulating hexagonal boron nitride (h-BN), a one-atom thick crystal with a large bandgap (6 eV)[2], superior chemical and thermal stability, and a higher thermal conductivity, is known as “white graphene” due to their similar structure.a lattice mismatch of only 1.6%.展开更多
Methanol fuel cells have been intensively developed as clean and high-efficiency energy conversion system due to their high efficiency and low emission of pollutants.Here,we developed a simple aqueous synthetic method...Methanol fuel cells have been intensively developed as clean and high-efficiency energy conversion system due to their high efficiency and low emission of pollutants.Here,we developed a simple aqueous synthetic method to prepare bimetallic PdAu nanoflowers catalysts for methanol oxidation reaction(MOR)in alkaline environment.Their composition can be directly tuned by changing the ratio between Pd and Au precursors.Compared with commercial Pd/C catalyst,all of the PdAu nanoflowers catalysts show the enhanced catalytic activity and durability.In particular,the PdAu nanoflowers specific activity reached 0.72 mA/cm^(2),which is 14 times that of commercial Pd/C catalyst.The superior MOR activity could be attributed to the unique porous structure and the shift of the d-band center of Pd.展开更多
基金supported by the National Basic Research Program of China(2016YFA0200101)the National Natural Science Foundation of China(21633012 and 61890940)+2 种基金Beijing Municipal Science&Technology Commission(Z161100002116025)Chinese Academy of Sciences,the Strategic Priority Research Program of the Chinese Academy of Sciences(XDB30000000 and XDB12030100)Beijing National Laboratory for Molecular Sciences(BNLMS)
文摘Two dimensional (2D) materials have attracted intense attention owing to their unique physical and chemical properties and the realization of artificial structure and functionality [1]. Insulating hexagonal boron nitride (h-BN), a one-atom thick crystal with a large bandgap (6 eV)[2], superior chemical and thermal stability, and a higher thermal conductivity, is known as “white graphene” due to their similar structure.a lattice mismatch of only 1.6%.
基金Project supported by the National Natural Science Foundation of China(Grant Nos.118740271 and 1774124)Technology Development Program of Jilin Province,China(Grant No.20180101285JC)the China Postdoctoral Science Foundation(Grant Nos.2019T120233 and 2017M621198)
文摘Methanol fuel cells have been intensively developed as clean and high-efficiency energy conversion system due to their high efficiency and low emission of pollutants.Here,we developed a simple aqueous synthetic method to prepare bimetallic PdAu nanoflowers catalysts for methanol oxidation reaction(MOR)in alkaline environment.Their composition can be directly tuned by changing the ratio between Pd and Au precursors.Compared with commercial Pd/C catalyst,all of the PdAu nanoflowers catalysts show the enhanced catalytic activity and durability.In particular,the PdAu nanoflowers specific activity reached 0.72 mA/cm^(2),which is 14 times that of commercial Pd/C catalyst.The superior MOR activity could be attributed to the unique porous structure and the shift of the d-band center of Pd.
