نتایج جستجو برای: magnesium oxide nanotubes

تعداد نتایج: 239220  

2010
Di Wei

Dye sensitized solar cell (DSSC) is the only solar cell that can offer both the flexibility and transparency. Its efficiency is comparable to amorphous silicon solar cells but with a much lower cost. This review not only covers the fundamentals of DSSC but also the related cutting-edge research and its development for industrial applications. Most recent research topics on DSSC, for example, ap...

2011
R. S. Masareddy V. G. Joshi R. S. Sutar S. K. Yellanki Rahul S. Sutar

ABBREVIATIONS: μmMicrometer, nmNanometer, PMMA Poly (methylmethacrylate), PACA Poly (alkylcyanoacrylate), PMM Poly (methylidenemalonate), SME Sub-micron emulsion, PAMAM Polyamido amines, 5-ASA 5-Aminosalicylic acid, McMolar mass of the core, MmMolar mass of the branched monomer, MtMolar mass of the terminal groups, ncCore multiplicity, nmBranch-juncture multiplicity, GGeneration number, CMCCrit...

2016
Xiao Hu Wang Chang Cheng Zheng Ji Qiang Ning

Transition-metal dichalcogenides (TMDs) nanostructures including nanotubes and monolayers have attracted great interests in materials science, chemistry to condensed matter physics. We present an interesting study of the vibration modes in multi-walled tungsten sulfide (WS2) nanotubes prepared via sulfurizing tungsten oxide (WO3) nanowires which are investigated by confocal micro-Raman spectros...

Journal: :Journal of physics. Condensed matter : an Institute of Physics journal 2009
Kah Chun Lau Roberto Orlando Ravindra Pandey

First principles calculations based on density functional theory predict a highly selective adsorption site for Mg atoms and negligible preference for the growth of Mg islands on the tubular surface of Mg-intercalated (small diameter) boron nanotubes, thereby establishing the criterion for understanding the growth mechanism of single-walled boron nanotubes (SWBNTs) supported by magnesium. On th...

Golnaz Parhizgar Mona Hosseini-Sarvari,

Epoxides undergo regioselective ring opening with various nucleophiles using catalytic amount of nano magnesium oxide and water as solvent under mild reaction conditions. The remarkable features of this method are improved yields, high regioselectivity, and green chemistry agreement.

Journal: :Mathematics 2022

The uniqueness of nanofluids in the field thermal analysis and engineering is associated with their conductivity thermodynamics. dynamics water made up (i) single-walled carbon nanotubes larger magnitudes different shapes (i.e., platelet, cylindrical, spherical) (ii) moderately small platelet magnesium oxide, cylindrical aluminum spherical silicon dioxide) were explored order to address some sc...

Journal: :Small 2015
Hyun Kim Seok Joon Yun Jin Cheol Park Min Ho Park Ji-Hoon Park Ki Kang Kim Young Hee Lee

We report growth of tungsten diselenide (WSe2) nanotubes by chemical vapor deposition with a two-zone furnace. WO3 nanowires were first grown by annealing tungsten thin films under argon ambient. WSe2 nanotubes were then grown at the tips of WO3 nanowires through selenization via two steps: (i) formation of tubular WSe2 structures on the outside of WO3 nanowires, resulting in core (WO3)-shell (...

Journal: :Metals 2021

Magnesium hydride is considered to be one of the most promising hydrogen storage materials, although it nevertheless has some problems, such as high value activation energy desorption. To solve this problem, scientists have proposed adding nanocarbon in particular carbon nanotubes, magnesium hydride. Currently, a detailed understanding mechanisms obtaining composites based on and nanotubes lack...

2011
Yi Zhao Jiaxin Li Chuxin Wu Lunhui Guan

We report a general strategy for synthesis of a large variety of metal oxide nanoparticles on different carbon nanomaterials (CNMs), including single-walled carbon nanotubes, multi-walled carbon nanotubes, and a few-layer graphene. The approach was based on the π-π interaction between CNMs and modified aromatic organic ligands, which acted as bridges connecting metal ions and CNMs. Our methods ...

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