نتایج جستجو برای: fe doped nanotube

تعداد نتایج: 140621  

Journal: :physical chemistry research 0
fahimeh shojaie department of photonic, institute of science and high technology and environmental sciences, graduate university of advanced technology, kerman,iran.

the effect of impurities on quantum chemical parameters of single-walled nanotubes (swnts) was studied using density functional theory (dft). the density of states (dos), fermi energy and thermodynamic energies of (5,5) carbon nanotubes were calculated in the presence of nitrogen impurity. it was found that this nanotube remains metallic after being doped with one nitrogen atom. the partial den...

2017
You-Yun Li Hao-Long Chen Guo-Ju Chen Chia-Liang Kuo Ping-Hung Hsieh Weng-Sing Hwang

Fe-doped LiNbO₃ synthesized by the combustion method to seek new multiferroic materials exhibits room-temperature ferromagnetism, as reported in our previous work [1]. In this work, the defect structure of congruent and Fe-doped LiNbO₃ (0.57-3.3 mol %) powders was investigated in detail by several methods. The molar ratio of [Li]/([Li]+[Nb]) was determined by the Curie temperature (Tc) via DSC....

Etrat alsadat Dadfar Mahdi Rezaei Sameti,

In this research, we studied the structure, properties and NMR parameters of interaction F2 gas with pristine and 3C-doped (8, 0) zigzag models of boron phosphide nanotubes (BPNTs). in order to reach these aims, we considered four different configurations for adsorption of F2gas on the outer and inner surfaces of BPNTs. The structures of all models were optimized by using density functional the...

Journal: :health scope 0
narges shamsedini department of environmental health engineering, school of health, student research committee, shiraz university of medical sciences, shiraz, ir iran mohammad ali baghapour research center for health sciences, department of environmental health, school of health, shiraz university of medical sciences, shiraz, ir iran mansooreh dehghani research center for health sciences, department of environmental health, school of health, shiraz university of medical sciences, shiraz, ir iran; research center for health sciences, department of environmental health, school of health, shiraz university of medical sciences, shiraz, ir iran. tel: +98-9164490350, fax: +98-7137260225 simin nasseri department of environmental health engineering, school of health, student research committee, shiraz university of medical sciences, shiraz, ir iran mohammad sohrab moghaddam qom university, qom, ir iran

conclusions according to the results, it can be concluded that the titanium catalyst doped with iron (fe+3-tio2) processes is an appropriate method for reducing atrazine in polluted water resources. results the results demonstrated that the atrazine removal rate increased by decreasing the initial atrazine concentration and the maximum rate of atrazine removal (41.72%) was at ph = 11, atrazine ...

2018
Ahmad Syakirin Ismail Mohamad Hafiz Mamat Mohamad Rusop Mahmood

Metal-doped zinc oxide (ZnO) nanorod arrays have attracted much attention due to improvement in their electrical, structural, and optical properties upon doping. In this chapter, we discuss the effects of aluminum (Al)and iron (Fe)-doping on ZnO nanorod arrays properties particularly for humidity sensor applications. Compared to Fe, Al shows more promising characteristics as doping element for ...

Journal: :The Journal of chemical physics 2007
L Qiao W T Zheng H Xu L Zhang Q Jiang

The geometrical structures and field emission properties of pristine and N-doped capped (5,5) single-walled carbon nanotubes have been investigated using first-principles density-functional theory. The structures of N-doped carbon nanotubes are stable under field emission conditions. The calculated work function of N-doped carbon nanotube decreases drastically when compared with pristine carbon...

2016
Yanhui Chen Junfeng Zhou Pierce Maguire Robert O’Connell Wolfgang Schmitt Yonghe Li Zhengguang Yan Yuefei Zhang Hongzhou Zhang

Cobalt hydrate and doped binary Co0.9M0.1OOH (M = Ni, Mn, Fe) nanorings of 100-300 nm were fabricated in solution through a facile ambient oxidation method. A transformation from Co0.9Ni0.1(OH)2 nanodiscs to hollow Co0.9Ni0.1OOH nanorings was observed with prolonged reaction time. Core-shell nanodiscs have elemental segregation with a Co(OH)2 core and Ni(OH)2 shell. Co0.9Ni0.1OOH nanorings disp...

2002
SLAVA V. ROTKIN ILYA ZHAROV I. Zharov

The use of carbon nanotubes for field effect nanoelectronic devices, which has been recently demonstrated, motivates further studies of electrochemical and chemical analogues of nanotube molecular transistors. However, chemical gating is not applicable for modern electronics due to its slow response. Herein we propose a novel molecular electronic device: Nanotube LightControlled Switch (NLCS). ...

Journal: :Optics express 2009
Leonel P Gonzalez Joel M Murray Srinivasan Krishnamurthy Shekhar Guha

Nonlinear absorption at 1.064 and 1.535 microm wavelengths by two photon and free carrier absorption processes in undoped and Fe doped InP has been investigated. Using picosecond and nanosecond duration lasers, a self-consistent set of the two photon and free carrier absorption coefficients are experimentally obtained through nonlinear transmission measurements for the first time. Reduced carri...

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