School of Chemistry, The University of New South Wales, Kensington, NSW 2052 (Australia).
ChemSusChem. 2014 Jan;7(1):82-6. doi: 10.1002/cssc.201300975. Epub 2013 Dec 11.
Gold nanoparticles incorporated in mesoporous cobalt oxides (Au/mCo3 O4 ) are fabricated by a nanocasting method using porous silica as the hard template. The Au/mCo3 O4 material exhibits enhanced catalytic activity towards water oxidation compared to bulk mCo3 O4 in both alkaline and neutral solutions. The superior catalytic performance is ascribed to the synergistic effect of electronegative metal gold, which facilitates the generation of active Co(IV) sites, as well as the large specific surface area and the preferential exposure of catalytic active crystalline lattice.
采用纳米铸造法，以多孔硅为硬模板，制备了负载金纳米颗粒的介孔钴氧化物(Au/mCo3 O4)。与体相 mCo3 O4 相比，Au/mCo3 O4 材料在碱性和中性溶液中对水氧化具有增强的催化活性。优越的催化性能归因于电负性金属金的协同作用，这有利于生成活性 Co(IV)位，以及大的比表面积和催化活性晶格的优先暴露。
