量子电动学诱导电磁辐射研究纳米催化剂(英文)

作     者：Thomas V. PREVENSLIK 

作者机构：ConsultantDiscovery Bay 

出 版 物：《催化学报》 (CHINESE JOURNAL OF CATALYSIS)

年 卷 期：2008年第29卷第11期

页      面：1073-1078页

核心收录：

学科分类：081705[工学-工业催化] 0817[工学-化学工程与技术] 08[工学] 0703[理学-化学] 

主　　题：纳米催化剂 量子 电动力学 电磁辐射诱导 

摘      要：Gold has been regarded as a poor heterogeneous catalyst because it is generally considered a nonreactive metal. But as nanocatalysts,gold and other metals somehow significantly enhance reactivity. It is generally thought chemical bonds of reactants are weakened by adsorption to nanocatalysts thereby allowing reactions to proceed more rapidly,but how this reaction proceeds to completion is not well understood. Here gold nanocatalysts are treated as unsupported nanoparticles (NPs) in a solution of reactant molecules from which extensions are made to gold NPs supported on titanium dioxide. Whether the NPs are supported or unsupported,enhanced catalytic reactivity depends on absorbed thermal kT (k is Boltzmann s constant and T is absolute temperature) energy accumulated from prior collisions of reactant molecules. The accumulated kT energy is treated as electromagnetic thereby allowing frequency up-conversion by quantum electrodynamics (QED) to the confinement frequency of the NP,typically beyond the vacuum ultraviolet (VUV). By this theory,the chemical reaction of reactant molecules having bonds weakened by adsorption is completed by QED induced VUV photolysis.