نتایج جستجو برای: perovskite oxide

تعداد نتایج: 189051  

LaMnO3 and LaMnO3/ZSM-5 nano catalysts were synthesized by Pechini method and their physical-chemical properties were characterized using XRD, FTIR, SEM-EDX, UV-vis DRS, BET surface area and TPR. The correlation between characteristic properties and activity of catalysts were investigated. The catalytic performance of the catalysts was evaluated in combustion of 2-propanol...

Journal: :Small 2022

Noncentrosymmetric Oxides In article number 2200992, Yannick Mugnier and co-workers critically review the solution-based synthesis methods for preparation of noncentrosymmetric oxide nanocrystals with perovskite non-perovskite crystalline structures. Special attention research community to detailed understanding their formation mechanisms is still needed improving resulting morphology aggregati...

ایزدی‌فرد, مرتضی , عالی‌دائی, مریم , قاضی, محمدابراهیم ,

The CH3NH3PbI3 is one of the most widely used and famous lead halide perovskite absorber layer for using in perovskite solar cells. One of the ways to deal with the instability problem of this perovskite structure in environmental condition is bromide doping in this composition. In this work, the structural and optical properties of the bromide doped CH3NH3PbI3 absorber layers were studied as w...

2016
Vanessa Cascos José Antonio Alonso María Teresa Fernández-Díaz

SrCoO3-δ outperforms as cathode material in solid-oxide fuel cells (SOFC) when the three-dimensional (3C-type) perovskite structure is stabilized by the inclusion of highly-charged transition-metal ions at the octahedral positions. In a previous work we studied the Nb incorporation at the Co positions in the SrCo1-xNbxO3-δ system, in which the stabilization of a tetragonal P4/mmm perovskite sup...

Journal: :Journal of the Magnetics Society of Japan 1996

Journal: :Journal of the Ceramic Society of Japan 2014

Journal: :The journal of physical chemistry letters 2015
Tae-Sik Oh Ehsan K Rahani Dragos Neagu John T S Irvine Vivek B Shenoy Raymond J Gorte John M Vohs

The evolution of the surface morphology during exsolution of Ni from the perovskite La0.4Sr0.4Ti0.97Ni0.03O3-δ under reducing conditions was determined using atomic force microscopy. The exsolution process was found to initially induce the formation of a 20-30 nm deep pit on the oxide surface followed by the emergence of a Ni particle at the bottom of the pit. Continued emergence of the particl...

Journal: :Journal of environmental sciences 2011
Xiaodong Wu Fan Lin Lei Wang Duan Weng Zhou Zhou

Manganese oxide-loaded and -doped ceria as well as the corresponding barium-modified oxide catalysts were prepared for soot oxidation in the presence of NO(x), and were characterized by using X-ray diffraction, Brunauer-Emmett-Teller and NO temperature-programmed oxidation measurements. The activity of catalyst depended strongly on the NO2 production capacity, and the importance of surface nitr...

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