Rare earth (RE) metals are also gooddoping elementsthat can be used to change the electronic structure of ZnO and expand its visible light absorption. Doping with RE metals forms a localizedimpurity levelin theband structureof ZnO and alters the band structure. The electronic structure of ZnO ...
Chem628 transition metalsII, Tutorial
Hydrogenation of carboxylic acids to alcohols was effectively catalyzed by bimetallic systems consisting of Group 8 to 10 late transition-metals, and Group 6 or 7 early transition-metal carbonyls. These catalysts easily converted α,ω-d... DH He,N Wakasa,T Fuchikami - 《Tetrahedron Letters》 ...
In addition, the removal of trace transition metals in pharmaceutical and other applications remains a challenge31,32,33,34. In contrast, transition-metal-free cross-coupling strategies can overcome many of these limitations35,36. Some Friedel-Crafts-type protocols fall into this category, but ...
28), which has only been demonstrated by catalysts based on transition metals like Ni and Pt35,36. No D incorporation into the methine of 2-PrOH was observed, suggesting that NAC-800 does not utilize 2-PrOH as a hydrogen source under the reaction condition. To confirm H2 is the sole ...
Thus, the use of transition metals as dopants, such as vanadium (V), tungsten (W), iron (Fe), niobium (Nb) and so on, appears as a promising strategy to improve the performance of photocatalysis or chemiresistive sensors [1], [2], [3], [4], [5], [6], [7], [8], [9], ...
Chemical properties of mass-selected coinage metal cluster anions: towards obtaining molecular-level understanding of nanocatalysis The catalytic activity of metal clusters often shows an interesting cluster size selectivity, e.g., metals which are inert in bulk form can become extraord... YD Kim -...
,A.,Groeneveld,A.,Rosa 摘要: The first time-dependent density functional theory (TDDFT) calculations on the spectra of molecules containing transition metals are reported. Three prototype systems are considered, of which the assignments are controversial: MnO4-, Ni(CO)4, and Mn2(CO)10. ...
In summary, we have developed a universal and robust “ligand-mediated” method for the synthesis of M-SACs with high metal contents. The method can be used to synthesize M-SACs containing first-, second- and third-row transition metals on carbon supports. Ni-SACs synthesized by the new met...
Transition metal catalysishas revolutionized modern synthetic organic chemistry since the 1970s. While previously dominated by precious metals, recent decades have witnessed a renewed interested in iron, owning to its sustainability and unique reactivities.1The realm of iron catalysis has been expanding ra...