نتایج جستجو برای: fe2o3 nanostructure

تعداد نتایج: 10037  

Journal: :Nanoscale 2015
Fangcai Zheng Mengni He Yang Yang Qianwang Chen

Iron oxides are extensively investigated as anode materials for lithium-ion batteries (LIBs) because of their large specific capacities. However, they undergo huge volume changes during cycling that result in anode pulverization and loss of electrical connectivity. As a result, the capacity retention of the iron oxide anodes is poor and should be improved for commercial applications. Herein, we...

Journal: :journal of nanostructures 2014
m. farahmandjou f. soflaee

iron oxide (fe2o3) is widely used as a catalyst, pigment and gas sensitive material.  in this article, α-fe2o3 nano-rods were first synthesized via a simple chemical method using iron(iii) nitrate 9- hydrate (fe(no3)3.9h2o) as precursor. xrd pattern showed that the iron oxide nanoparticles exhibited alpha-fe2o3 (hematite) structure in nanocrystals. the single-phase α- fe2o3 nano-rods were prepa...

2017
Muhammad Ikram-Ul-Haq Partha Sarathi Mukherjee Rita Khanna

Light-weight ferro-aluminium alloys are finding increasing application in the transport sector to reduce overall weights, energy costs and CO2 emissions. As the primary production processes of both Fe and Al are among the most energy-intensive industrial processes in the world, there is an urgent need to develop alternate routes for producing Fe-Al alloys. Our group has successfully produced th...

2012
YAN LAI BO XU LI HE MING LIN LEI CAO YANG WU SHAOLIANG MOU SHUILIN HE

A hydroponics culture experiment was carried out to investigate the effect of iron plaque and/or Fe2O3 on Cadmium (Cd) uptake by and translocation within rice seedlings. Uniform rice seedlings grown in nutrient solution for two weeks were selected and transferred to nutrient solution containing ferrous iron (Fe) (30 mg/L) for 24 h to induce the formation of iron plaque on the root surface. Then...

Journal: :Physical chemistry chemical physics : PCCP 2016
Prince Saurabh Bassi Li Xianglin Yanan Fang Joachim Say Chye Loo James Barber Lydia Helena Wong

Hematite (Fe2O3) nanorods on FTO substrates have been proven to be promising photoanodes for solar fuel production but only with high temperature thermal activation which allows diffusion of tin (Sn) ions from FTO, eventually enhancing their conductivity. Hence, there is a trade-off between the conductivity of Fe2O3, and the degradation of FTO occurring at high annealing temperatures (>750 °C)....

2016
Klára Jiráková Monika Šeneklová Daniel Jirák Karolína Turnovcová Magda Vosmanská Michal Babič Daniel Horák Pavel Veverka Pavla Jendelová

INTRODUCTION Magnetic resonance (MR) imaging is suitable for noninvasive long-term tracking. We labeled human induced pluripotent stem cell-derived neural precursors (iPSC-NPs) with two types of iron-based nanoparticles, silica-coated cobalt zinc ferrite nanoparticles (CZF) and poly-l-lysine-coated iron oxide superparamagnetic nanoparticles (PLL-coated γ-Fe2O3) and studied their effect on proli...

2007
Carrick M. Eggleston Janos Vörös Liang Shi Brian H. Lower Timothy C. Droubay Patricia J.S. Colberg Michael Grätzel

Dissimilatory iron-reducing bacteria transfer electrons to solid ferric respiratory electron acceptors. Outer-membrane cytochromes expressed by these organisms are of interest in both microbial fuel cells and biofuel cells. We use optical waveguide lightmode spectroscopy (OWLS) to show that OmcA, an 85 kDa decaheme outer-membrane c-type cytochrome from Shewanella oneidensis MR-1, adsorbs to iso...

2016
Tetsuaki Nishida Shiro Kubuki Koken Matsuda Yuki Otsuka

This paper reviews recent studies of highly conductive barium iron vanadate glass with a composition of 20 BaO ∙ 10 Fe2O3 ∙ 70 V2O5 (in mol %). Isothermal annealing of the vanadate glass for several ten minutes at a given temperature, higher than glass transition temperature or crystallization temperature, caused an increase in σ. Substitution of CuI (3d10), ZnII (3d10) and CuII (3d9) for FeIII...

2016
Chengcheng Zhao Guoqiang Tan Wei Yang Chi Xu Ting Liu Yuning Su Huijun Ren Ao Xia

The novelties in this paper are embodied in the fast interfacial charge transfer in α-Fe2O3-δCδ/FeVO4-x+δCx-δ@C bulk heterojunctions with controllable phase compositions. The carbon source-glucose plays an important role as the connecting bridge between the micelles in the solution, forming interfacial C-O, C-O-Fe and O-Fe-C bonds through dehydration and polymerization reactions. Then the extra...

2017
Yan Zhong Yifan Ma Qiubo Guo Jiaqi Liu Yadong Wang Mei Yang Hui Xia

Highlighted by the safe operation and stable performances, titanium oxides (TiO2) are deemed as promising candidates for next generation lithium-ion batteries (LIBs). However, the pervasively low capacity is casting shadow on desirable electrochemical behaviors and obscuring their practical applications. In this work, we reported a unique template-assisted and two-step atomic layer deposition (...

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