近日,大连理工大学郭新闻教授团队与中国石化大连石油化工研究院侯栓弟教授团队合作,通过实验、表征及理论计算相结合的方式,研究了钴系尖晶型氧化物在低碳烷烃催化氧化中的反应机制,并针对以下三个关键科学问题进行回答:一是通过控制NixCo3-xO...
取代Ni原子改变了NixCo3−xO4的氧空位形成和C−H键解离,从而改变了NixCo3−xO4的氧化还原能力。 与NiCo2O4-PC (0.5 mmol mL−1h−1)和NiCo2O4-OL催化剂(1.3 mmol mL−1h−1)相比,在330 °C下,NiCo2O4-TM催化剂(6.0 mmol mL−1h−1)的乙烷氧化活性最高,其活化能(Ea)为70.9 kJ mol...
CdSeNixCo3-xO4氨挥发诱导生长光电水氧化利用氨挥发诱导法在CdSe/TiO2纳米管阵列表面负载一层NixCo3-xO4.采用SEM,XRD,XPS,UV-Vis对样品进行表征,通过线性扫描伏安法测定光阳极的释氧电势来评价其光电水氧化活性.结果表明:表面NixCo3-xO4是尖晶石结构;相对于CdSe/TiO2纳米管阵列光阳极,NixCo3-xO4/CdSe/TiO2光...
取代Ni原子改变了NixCo3−xO4的氧空位形成和C−H键解离,从而改变了NixCo3−xO4的氧化还原能力。 与NiCo2O4-PC (0.5 mmol mL−1h−1)和NiCo2O4-OL催化剂(1.3 mmol mL−1h−1)相比,在330 °C下,NiCo2O4-TM催化剂(6.0 mmol mL−1h−1)的乙烷氧化活性最高,其活化能(Ea)为70.9 kJ mol...
Highly crystallized cubic NixCo3xO4 with porous hierarchical structures was synthesized through a simple coprecipitation method followed by calcination at temperatures above 400掳C in air. The performances of the samples as anode materials for Na-ion batteries were evaluated. At 100mAg1 in the 50th...
NixCo3-xO4表面修饰对CdSe/TiO2纳米管阵列光电化学 氧化水活性的影响 许 贞t, 2 李 娟1 李新军, 1 (中国科学院可再生能源与天然气水合物重点实验室, 中国科学院广州能源研究所,广州 510640) (中国科学院大学,北京 100049) 摘要:利用氨挥发诱导法在CdSe/TiO2纳米管阵列表面负载一层Ni~Co3O。采用SEM、XRD、...
High-quality nickel cobaltite (NixCo3xO4, 0 ≤ x ≤ 1) nanopowders with various nickel contents have been prepared by a facile hydrothermal method, calcined in air at 300°C for 2 h, then coated on the surface of indium tin oxide sheets by electrophoretic deposition. The optical, ...
Direct assembling 2D zeolitic imidazolate frameworks-derived (ZIFs)-derived Ni-Co oxide on Ni foam (NixCo3−xO4/Ni foam) is a very attractive way to obtain high performance for electrochemical energy storage device. In this work, the highly optimized NixCo3−xO4/Ni foam was prepared via...
In this work, we investigate the relationship between the surface stability, electronic structure of Ni3+ hole states, and oxygen evolution reaction (OER) activity in epitaxially grown NixCo3–xO4 (x = 0, 0.3, 1.0) model electrocatalysts through analysis of their electronic structure before and...
特别是暴露某些特定晶面,达到调控催化剂表面性质及活性位点电子结构的目的,并将其应用于乙烷催化氧化反应中,建立构效关系;二是通过Ni原子掺杂改变立方型Co3O4的结构及电子性能,达到灵活调变氧空位数量及性质的目的;三是通过原位红外和DFT理论计算相结合的方式,揭示NixCo3-xO4表面乙烷催化氧化中间物种的演变机制和反应...