催化作用
钒
吸附
Atom(片上系统)
化学
钼
化学物理
渲染(计算机图形)
纳米技术
材料科学
物理化学
无机化学
计算机科学
有机化学
计算机图形学(图像)
嵌入式系统
作者
Weiye Qu,Haiyang Yuan,Zhouhong Ren,Jizhen Qi,Dongrun Xu,Junxiao Chen,Liwei Chen,Hua Gui Yang,Zhen Ma,Xi Liu,Haifeng Wang,Xingfu Tang
标识
DOI:10.1002/anie.202212703
摘要
Effective adsorption and speedy surface reactions are vital requirements for efficient active sites in catalysis, but it remains challenging to maximize these two functions simultaneously. We present a solution to this issue by designing a series of atom-pair catalytic sites with tunable electronic interactions. As a case study, NO selective reduction occurring on V1 -W1 /TiO2 is chosen. Experimental and theoretical results reveal that the synergistic electron effect present between the paired atoms enriches high-energy spin charge around the Fermi level, simultaneously rendering reactant (NH3 or O2 ) adsorption more effective and subsequent surface reactions speedier as compared with single V or W atom alone, and hence higher reaction rates. This strategy enables us to rationally design a high-performance V1 -Mo1 /TiO2 catalyst with optimized vanadium(IV)-molybdenum(V) electronic interactions, which has exceptional activity significantly higher than the commercial or reported catalysts.
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