نتایج جستجو برای: uv vis drs

تعداد نتایج: 83788  

Journal: :IOP conference series 2022

Abstract Zeolites have been widely regarded as promising supporting host materials for the catalyst due to their unique structure, high surface area and excellent adsorption capacity. In this work, TiO 2 particles were deposited on of zeolite used photocatalytic degradation sulfamethoxazole in water under UV light irradiation (365 nm). XRD, Raman spectroscopy, SEM/EDS, UV-Vis diffuse reflectanc...

Journal: :Materials research express 2022

Abstract Silver/Zinc Oxide nanocomposites (Ag-ZnO NCs) were fabricated by varying the weight percentages of both Ag and ZnO for investigating its photocatalytic activity. The structural, morphology optical response prepared examined with PXRD, FESEM, TEM, EDAX, XPS, FT-IR, UV–vis-DRS PL spectroscopy. effect concentrations on these was examinedby analyzing thephotocatalytic activity towards Meth...

2014
Xuewei Dong Fan Zhang Chuan Rong Hongchao Ma

The ZnS-Bi-TiO2 composites were prepared by the sol-gel method and were characterized by X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), X-ray diffraction (XRD) and UV-visible diffuse reflectance spectroscopy (UV-Vis DRS). It is found that the doped Bi as Bi(4+)/Bi(3+) species existed in composites, and the introducing of ZnS enhanced further the light absorption...

2010
Sergio Valencia Juan Miguel Marín Gloria Restrepo

In this work optical properties of titanium dioxide nanoparticles were studied. Titanium dioxide nanoparticles were synthesized by the sol-gel method followed by a hydrothermal treatment using tetraisopropyl orthotitanate (TIOT) and 2-propanol. The synthesized samples were characterized by X-ray diffraction (XRD), UV-Vis diffuse reflectance spectroscopy (UV/DRS) and nitrogen adsorption-desorpti...

Journal: :Journal of Materials Science: Materials in Electronics 2021

A series of reduced graphene (rGO) and AgBr composite heterojunction photocatalysts were fabricated through a facile solvothermal method. The rGO/AgBr heterostructures characterized by XPS, XRD, UV–Vis DRS, SEM, TEM, photoluminescence (PL), the transient photocurrent responses. TEM analyses indicated that silver bromide successfully compounded without other impurities. DRS exhibited composites ...

Journal: :The Journal of Pure and Applied Chemistry Research 2022

Bi4Ti3O12 is a tri-layer Aurivillius member compound that was reported to have good photocatalytic properties. Metal element doping and morphological particle tuning are strategies increase photocatalyst activity. In this research, the micro sheets Bi4Ti2.95V0.05O12 were synthesized using molten NaCl/KCl salt. The diffractogram shows sample successfully synthesized, however, there still found i...

In recent years, green synthesis of nanoparticles has attracted a great attention because of medicine and biological applications. In this work, bismuth oxide nanoparticles (Bi2O3 NP) was prepared via green synthesis using mentha pulegium aqueous extract after 24 h at 90°C. The product was characterized by ultraviolet-visible (UV-VIS) spectrophotometer, Fourier transform infrared (FTIR), X-ray ...

2014

There are specifi c benefi ts to using a UV-Vis spectrophotometer with diode array detector technology compared to those offered when using traditional scanning UV-Vis instruments. Within the molecular spectroscopy group, Agilent is able to offer both types of UV-Vis instruments. The Agilent Cary 60 UV-Vis, based on Xenon fl ash lamp technology, is the ideal scanning instrument for many routine...

2005
Kenneth Knoblauch

A simple method is introduced for analyzing error score distributions from the Farnsworth-Munsell 100-Hue test. The method involves fitting a sine wave directly to the error distribution, and produces estimates of three parameters that characterize the severity of the defect, the degree of bipolarity, and the orientation of the axis of bipolarity, if one is present. The method produces good est...

2013
Chang Kook Hong Hyun-Seok Ko Eun-Mi Han Je-Jung Yun Kyung-Hee Park

We have successfully introduced green phosphors LaPO4:Ce, Tb (G4) or (Mg, Zn)Al11O19:Eu (G2) into TiO2 photoelectrode of dye-sensitized solar cells. The conversion efficiency of the G4-doped device was enhanced by 30% compared with the pristine TiO2 photoelectrode. The green phosphor doped at 5-wt.% ratio contributed to the reduction of resistances of the surface and interface of the photoelect...

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