نتایج جستجو برای: xo4

تعداد نتایج: 263  

Journal: :Bangladesh Journal of Scientific and Industrial Research 2022

The current study unravels the structural, optical band gap and magnetic characteristics of rare-earth (RE) gadolinium (Gd) substituted CoGdxFe2-xO4 (x= 0.00 - 0.10, in interval 0.02) nanocrystallites synthesized by sol-gel self-ignition route. XRD analysis Rietveld refinement confirmed existence a single cubic phase with crystallite size ~15-21 nm range, further HRTEM results. SEM images well-...

Journal: :Chemcatchem 2021

A series of Co1+xFe2–xO4 (0≤x≤2) spinel nanowires was synthesized by nanocasting using SBA-15 silica as hard template, which characterized X-ray powder diffraction, photoelectron spectroscopy, and transmission electron microscopy. The spinels were applied in the aerobic oxidation aqueous 2-propanol solutions to systematically study influence exposed Co Fe cations on catalytic properties. activi...

Journal: :Journal of Alloys and Compounds 2022

Manganese oxides attract considerable attention as redox catalysts for abatement of environmental pollutants due to their relatively high activity and low costs contrary noble metal catalysts. The present work is focused on the effect cryptomelane-type MnO2 catalyst modification with Fe3+, Ce3+/Ce4+, Sn4+ phase composition, structural peculiarities, catalytic in CO oxidation. samples are invest...

با افزودن عناصر واسطه به اکسید اسپینل منگنز-کبالت (MCO) می‌توان هدایت الکتریکی دمای بالا و چسبندگی پوشش‌های محافظ بر روی اتصال‌دهنده‌های پیل سوختی اکسید جامد را بهبود بخشید. در این پژوهش، نانوپودرهای اسپینل با ترکیبCux(Mn, Co)3-xO4 (x= 0، 2/0 و 4/0) به روش سل-ژل بر پایه‌ی شیوه‌ی پچینی سنتز شد. آلیاژ فولاد زنگ‌نزن 430 به عنوان اتصال دهنده با استفاده از روش لایه نشانی الکتروفورتیک (EPD) توسط ترکی...

Journal: :Crystals 2023

Among the modern oncological therapies, one of most promising is based on tumor hyperthermia with magnetic nanoparticles resulting from crystallization iron and cobalt oxides. We synthesized core–shell perchlorate-CoxFe3−xO4 (x = 0; 0.5; 1.0) via co-precipitation method stabilized them in aqueous suspensions. Fine granulation dispersed ferrophase was revealed by Transmission Electron Microscopy...

Journal: :Journal of Power Sources 2022

The increasing adoption of lithium-ion batteries (LIBs) in consumer electronics, electric vehicles, and smart grids poses two challenges: the accurate prediction battery health to prevent operational impairments development new materials for high-performance LIBs. Characterized by their flexibility mathematical tractability, Gaussian processes (GPs) provide a powerful framework monitoring optim...

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