As a result, mesoporous materials have a promising prospect in the application of catalysis. In this review, the preparation methods for the noble-metal-based and transition-metal-oxide-based mesoporous catalysts, the reaction mechanisms of the catalytic oxidations of VOCs over them, the catalyst ...
Cyclic voltammetry (CV) and chronoamperometry (CA) measurements were performed to study the activity and stability of methanol oxidation reaction. The test solutions used in this study were 1.0 M KOH solution with and without addition of various methanol concentrations. All the experiments were...
Maintaining the uniformity and high dis- persion of the active metal sites has been considered to be the key to the excellent activity of catalysts8. However, with the sintering of catalysts, the active metal tends to agglomerate especially under the reaction conditions of high temperature and ...
The comprehensive investigation into the reaction mechanism of single crystal growth was conducted to understand the relationship between synthesis, morphology, and performance in growing single crystal NMC811. The enhanced performance of these materials was realized through the precise morphological and ...
There was an OER during charging reaction leading to an irreversible capacity of the first 10%. To address the stability issue, one of the doped materials, Al-doped LiAlxMn2-xO4 (x = 0.05, 0.1, 0.15) were prepared by solid-state reaction, further raising the oxidation state of Mn with...
The underlying mechanism can be interpreted as follows: The reaction to form one oxygen vacancy can be expressed as Oox→ Vo + 2e + 0.5O2,35 where the two resulting electrons are trapped by V4+ sites and then lead to lower valence states of V. This further induces multiple donor levels ...
These different switching behaviors in bilayer structures are ascribed to the different diffusion rates of Ag ions in each thin film, and redox reaction rates at the electrodes. Depending on the rate of redox reaction and migration or diffusion of metal ions in the switching layer, there are ...
The layered Li0.7CoxMn1-xO2 cathode materials with O2-type structure were synthesized by using improved solid-state reaction and ion exchange reaction in a... H Zhong,H Xu - 《Journal of Inorganic Materials》 被引量: 9发表: 2004年 Effective Preparation, Characterization and In Situ Surface ...
The performance of battery materials is largely governed by structural and chemical evolutions during electrochemical reactions. Therefore, resolving spatially dependent reaction pathways could enlighten mechanistic understanding, and enable rational des
By sol-gel reaction at 80uC with reflux condenser for 2 h, TBOT was hydrolysed and precipitated onto the surface of VO2 nanorods and then collected by filtration. Then dried powders were annealed in vacuum quartz tube under proper temperature and pressure with the shell transformed into ...