【摘 要】
：
Heterogeneous catalysts are the most important catalysts in industrial reactions.Nanocatalysts,with size ranging from hundreds of nanometers to the atomic scale
【机 构】
：
School of Physical Sciences and CAS Center for Excellence in Topological Quantum Computation,Univers
论文部分内容阅读
Heterogeneous catalysts are the most important catalysts in industrial reactions.Nanocatalysts,with size ranging from hundreds of nanometers to the atomic scale,possess activities that are closely connected to their structural characteristics such as particle size,surface morphology,and three-dimensional topography.Recently,the development of advanced analytical transmission electron microscopy (TEM) techniques,especially quantitative high-angle annular darkfield (HAADF) imaging and high-energy resolution spectroscopy analysis in scanning transmission electron microscopy (STEM) at the atomic scale,strengthens the power of (S)TEM in analyzing the structural/chemical information of heterogeneous catalysts.Three-dimensional reconstruction from two-dimensional projected images and the real-time recording of structural evolution during catalytic reactions using in-situ (S)TEM methods further broaden the scope of (S)TEM observation.The atomic-scale structural information obtained from high-resolution (S)TEM has proven to be of significance for better understanding and designing of new catalysts with enhanced performance.
其他文献
花芽分化是植物成花的基础，抽薹在花芽分化及发育过程的中途便开始，与花芽分化有不可分的关系，关于成花机理方面的研究不断深入，植物激素控制成花的研究越来越多，近年来关于DNA甲
The major challenge faced by the fifth generation(5G) mobile network is higher spectral efficiency and massive connectivity,i.e.,the target spectrum efficiency
On the basis of a state-of-the-art aberration-corrected transmission electron microscope,the spherical aberration coefficient Cs of the objective lens can be tu
Stochastic characterization of radiation interaction is of importance to cell damage.Microdosimetry is to investigate the random structures of particle tracks i
We study superconducting properties of NbN thin film samples with different thicknesses and an ultra-thin NbTiN meander nanowire sample.For the ultra-thin sampl
The multimodal admittance method and its improvement are presented to deal with various aspects in underwater acoustics, mostly for the sound propagation in inh
The electrocaloric effect of ferroelectric ceramics has been studied extensively for solid-state caloric cooling.Generally,most ferroelectric ceramics are poor
Cd-free kesterite structured solar cells are currently attracting attention because they are environmentally friendly.It is reported that Zn(O,S) can be used as
近年来，模拟酸雨已成为一个国际性的环境污染问题，对水体、土壤、森林等生态系统造成了严重的影响，因此受到许多研究者的重视，并已取得一些成果，但模拟酸雨对木本园林植物的伤害机
Density functional theory calculations are carried out to identify various configurations of oxygen molecules adsorbed on the Au-doped RuO2 (110) surface.The bi