نتایج جستجو برای: and uv visible spectrum

تعداد نتایج: 16880435  

M. Ghiyasiyan-Arani M. Masjedi-Arani M. Salavati-Niasari,

Copper vanadate nanostructures were prepared via ex-situ precipitation approach in presence of Schiff-base ligand (N,N׳ -buthylenebis(acetylacetone iminato)dianion = acacbn) as a new capping agent. The effect of different Cu sources and pH on the size, morphology and size distribution of copper vanadate nanostructures was investigated. The as-prepared products were characterized using X-ray dif...

Journal: :iranian chemical communication 2015
maryam movahedi fahimeh kazemi-cheryani nahid rasouli hossein salavati

in the present work, the znfe2o4 nanoparticle has been successfully synthesized. the obtained sample was characterized by x-ray diffraction (xrd), emission scanning electron microscopy (fe-sem) and its optical property was examined by uv-vis spectrophotometer. fe-sem revealed that the particle size of the znfe2o4 of about 47 nm was synthesized. the photocatalytic performance under uv-vis and vi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1391

we have two part in this thesis, at first: the interaction of native calf thymus dna (ct-dna) with two anthraquinones including quinizarin (1,4- dihydroxy anthraquinone) and danthron (1,8- dihydroxy anthraquinone) in a mixture of 0.04 m brittone-robinson buffer and 50% of ethanol were studied at physiological ph by uv-vis absorption, florescence, circular dichroism spectroscopic methods, viscos...

The group of 2D materials contains almost all the elements of the periodic table. In contrast to the graphene sheet, they are abundant, this creates a variety of electronic properties including metals, semimetals, insulators and semiconductors. Band gaps of these materials are direct or indirect by ranging from ultraviolet to infrared, for this reason, have received much attention for nanoelect...

ژورنال: :زیست فناوری 0
طاهر محصلی دانشجوی شهید باهنرکرمان شهرام پورسیدی استادیار بخش بیوتکنولوژی کشاورزی دانشگاه شهیدباهنرکرمان

فناوری نانو شامل تحقیق و توسعه فناوری در محدوده فضاهای 1 تا 100 نانومتر بوده و در این فناوری ذراتی با اندازه های بسیار کوچک و در مقیاس های اتمی ساخته و دست ورزی می شوند. عصاره های گیاهی می توانند به عنوان یک مسیر سبز برای سنتز نانوذرات نقره مورد استفاده قرار بگیرند. در این تحقیق بیوسنتز نانوذرات نقره با استفاده از عصاره بذر گیاه کنجد انجام شد. به عصاره بذری، نیترات نقره اضافه شده و در دمای 30 د...

2002
Y. Zhang M. Stuke

Thin palladium acetate films have been used for laser deposition (or prenucleation) of palladium lines, which can be used as a catalyst for electroless plating of other metals, notably Cu, to build up thicker conductors. This palladium deposition process was carried out using a CW argon ion laser at 514.5 nm for the first time in 1987 [l] then at 351 nm [2]. This visible-laser-induced depositio...

حامد جلیلی, , حسین فخرائیان, , حمید سروعلیشاه, , عبدالحسین رضوانی, ,

Effect of Al3+ ions on the optical quality, growth rate, shape, and structure of potassium dihydrogen phosphate (KDP) crystal was investigated. Growth method was based on the “point seed” method in a solution with optimum concentration, following spontaneous growth at room temperature. FTIR spectrum showed neutralization of O-H group in KDP crystal by Al3+ ions. UV-Visible spectrum of the cryst...

D. DurgaVijaykarthik M. Kirithika N. Jeyakumaran, N. Prithivikumaran,

Cadmium Oxide (CdO) nanoparticles were prepared by precipitation method using Cadmium acetate and ammonia solution. Presence of chemical species, were verified by Fourier Transform Infra Red (FTIR) Spectrum. From X-Ray Diffraction (XRD) spectrum the particle size, d-spacing value and structure of the nanoparticle were analysed. Size of the nanoparticles and the elemental composition were detect...

D. DurgaVijaykarthik M. Kirithika N. Jeyakumaran, N. Prithivikumaran,

Cadmium Oxide (CdO) nanoparticles were prepared by precipitation method using Cadmium acetate and ammonia solution. Presence of chemical species, were verified by Fourier Transform Infra Red (FTIR) Spectrum. From X-Ray Diffraction (XRD) spectrum the particle size, d-spacing value and structure of the nanoparticle were analysed. Size of the nanoparticles and the elemental composition were detect...

2015
S. THIRUMAVALAVAN K. MANI S. SURESH

Cadmium Selenide (CdSe) thin films were synthesized by chemical bath deposition (CBD) method. The XRD, SEM, UV-Visible absorption spectrum, dielectric studies and photoconductivity measurements were used to characterize the CdSe films. The X-ray diffraction (XRD) is used to examine the structure of CdSe thin film. The surface morphology of the film was analyzed using Scanning Electron Microscop...

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