将InGN纳米线组装在Si晶圆,修饰FeMn双重助催化剂,在木质素的转化中,以93 %的选择性制备合成气,在聚集光源下,合成气的产率达到42.4 mol gcat-1 h-1,且合成气的比例可调控,光能量转化为燃料的效率达到11.8 %。通过担载在一维InG...
借助于EXAFS确认了Mn的局部配位结构:1.95 Å处为Mn-O1键,配位数为4.5±0.6;2.94 Å处为Mn-Fe键,配位数为6.1±1.6;3.68 Å处为Mn-O2键,配位数为2.3±1.2。Mn-Mn键的缺失和Mn-Fe键的出现意味着Mn原子在Mn1-Fe2O3-1...
从TEM和Raman结果可见,所得不同金属氮碳材料具有不同的石墨化程度,其中Co-N-C材料具有明显的石墨化层状碳结构,石墨化程度最高,Fe-N-C材料次之,而Mn-N-C材料中的碳主要呈片状无定形状态,表明其石墨化程度最低.这可能是不同过渡金属中心在加热过程中对卟啉结构碳化过程催化效果不同所致,其中钴中心对卟啉结构...
具体工作如下:*.通过胶体磨水热法成功合成铁氧体MFe2O4 (M=Co, Ni, and Mn)纳米颗粒。铁氧体颗粒的晶相纯度和晶格常数用X射线衍射(XRD)来表征。扫面电子显微镜(SEM)和透射电子显微镜(TEM)结果显示了所合成样品的形貌和颗粒大小。而拉曼光谱分析(Raman)揭示了样品的声子振动模式,模式的移位也证实了样品四面体...
负载型Mn-Fe 2016年第35卷第4期CHEMICAL INDUSTRY AND ENGINEERING PROGRESS ·1101·化工进展 3-甲基吡啶一步气相氧化合成烟酸的V2O5/TiO2催化剂研究进展 胡小波，袁伟杰，朱秋莲，陈银飞，卢晗锋 （浙江工业大学化学工程学院，催化反应工程研究所，浙江杭州 310014）摘要：烟酸作为重要的化工和医药中间体广泛应用于不同...
materialswasinvestigatedbyX-raydiffraction,scanningelectronmicroscopy,Ramanspectroscopy andelectrochemicalmeasurements.TheelectrochemicalperformanceoftheFeandMgco-substituted LiMnPO 4 wasobviouslyimprovedwithincreasingsynthesistemperaturefrom650to800 ◦ C,butfurther ...
Hokura, I. Nakai, Electrochemically reversible sodium intercalation of layered NaNi0.5Mn0.5O2 and NaCrO2, ECS Transactions 16 (2009) 43–45. https://doi.org/10.1149/1.3112727. Gao Y, Wang Z, Lu G (2019) Atomistic understanding of structural evolution, ion transport and oxygen stability in ...
Single-atom Fe-N-C catalysts has attracted widespread attentions in the oxygen reduction reaction (ORR). However, the origin of ORR activity on Fe-N-C catalysts is still unclear, which hinder the further improvement of Fe-N-C catalysts. Herein, we provide a model to understand the ORR acti...
Transition-metal selenides (MxSey, M = Fe, Co, Ni) and their composites exhibit good storage capacities for sodium and lithium ions and occupy a unique position in research on sodium-ion and lithium-ion batteries. MxSey and their composites are used as active materials to improve catalyt...
FeSe2六方晶体/立方二硒化铁/FeSe2粉体 晶体大小:可定制 晶体种类:Magnetic semiconductor,红外半导体,拓扑材料,热电材料 表征方法:EDS,SEM,Raman 规格:注:可按客户需求定制相应的方向和尺寸。 包装:超净袋真空包装