scholarly journals Synthesis of Fe3O4/MIL-101 material and evaluation of photocatytic activity

2020 ◽  
Vol 9 (3) ◽  
pp. 40-44
Author(s):  
Kim Nguyen Van ◽  
Thanh Huynh Thi Minh
Keyword(s):  
Visible Light ◽  
Visible Light Region ◽  
X Ray Diffraction ◽  
Visible Absorption ◽  
X Ray ◽  
Light Region ◽  
Uv Visible ◽  
Absorption Spectrometer ◽  
Scanning Electron

In the present work, results synthesis of  Fe3O4/MIL-101 material and evaluation of photocatytic activity under visible light region. Characterization of Fe3O4/MIL-101 was investigated by using techniques including X-ray diffraction pattern (XRD), scanning electron microscopy (SEM), IR spectra and UV-visible absorption spectrometer. Evaluation of the photocatalytic activity of Fe3O4/MIL-101 material on the conversion of blue methylen solution under degradation in the visible light region.

scholarly journals Synthesis and characterization of novel copolymers based on carbazole and anthracene, for optoelectronic applications

2014 ◽  
Vol 10 (3) ◽  
pp. 2430-2440
Author(s):  
N. Belghiti ◽  
M. Bouachrine ◽  
K. Alimi
Keyword(s):  
Electron Microscopy ◽  
Synthesis And Characterization ◽  
Ir Absorption ◽  
X Ray Diffraction ◽  
Visible Absorption ◽  
X Ray ◽  
Uv Visible ◽  
Scanning Electron ◽  
Cp Mas 13C Nmr

The goal of this work is to study a new copolymer which combines the Ecbz properties and those Ant. First, we describe the route for preparing the new copolymer. Then, we report characterization measurements based on solid-state Nuclear Magnetic Resonance (CP-MAS 13C NMR), Raman, IR absorption, UV–visible absorption, photoluminescence spectroscopy, Scanning Electron Microscopy (SEM), and X-ray diffraction.

scholarly journals Preparation of Fe-DopedTiO2Nanotubes and Their Photocatalytic Activities under Visible Light

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Honghui Teng ◽  
Shukun Xu ◽  
Dandan Sun ◽  
Ying Zhang
Keyword(s):  
Visible Light ◽  
Visible Region ◽  
Molar Ratio ◽  
X Ray Diffraction ◽  
Visible Absorption ◽  
X Ray ◽  
Transmission Electron ◽  
Photocatalytic Activities ◽  
Ultrasonic Assisted ◽  
Uv Visible

Fe-doped TiO2nanotubes (Fe-TNTs) have been prepared by ultrasonic-assisted hydrothermal method. The structure and composition of the as-prepared TiO2nanotubes were characterized by transmission electron microscopy, X-ray diffraction, and UV-Visible absorption spectroscopy. Their photocatalytic activities were evaluated by the degradation of MO under visible light. The UV-visible absorption spectra of the Fe-TNT showed a red shift and an enhancement of the absorption in the visible region compared to the pure TNT. The Fe-TNTs were provided with good photocatalytic activities and photostability and under visible light irradiation, and the optimum molar ratio of Ti : Fe was found to be 100 : 1 in our experiments.

Microwave-Hydrothermal Synthesis and Characterization of Graphene

2012 ◽  
Vol 602-604 ◽  
pp. 917-920 ◽  
Author(s):  
Zhen Hui Xiao ◽  
Shui Sheng Wu ◽  
Yan Lin Sun ◽  
Yu Lin Zhao ◽  
Ya Ming Wang
Keyword(s):  
Chemical Reduction ◽  
Visible Spectrum ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
X Ray ◽  
Microwave Hydrothermal ◽  
Ft Ir ◽  
Uv Visible ◽  
Scanning Electron

Graphene was synthesized by microwave-hydrothermal chemical reduction of graphite oxide using hydrazine hydrate as the reducing agent. Graphene was characterized using X-ray diffraction, UV-visible spectrum, FT-IR spectrum and scanning electron microscopy. Results indicated that the as-prepared graphene was wrinkled and comprised fewer graphenes with a highly crystalline structure.

scholarly journals Characterization of Cubic AgSbS2Nanostructured Flowers Synthesized by Microwave-Assisted Refluxing Method

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Narongrit Tipcompor ◽  
Somchai Thongtem ◽  
Titipun Thongtem
Keyword(s):  
Electron Microscopy ◽  
Energy Gap ◽  
X Ray Diffraction ◽  
Visible Absorption ◽  
X Ray ◽  
Microwave Assisted ◽  
Direct Energy ◽  
Uv Visible ◽  
Direct Energy Gap

Cubic AgSbS2nanostructured flowers of nanorods were successfully synthesized by microwave-assisted refluxing of AgNO3, Sb(CH3COO)3, and L-cysteine (C3H7NO2S) dissolved in ethylene glycol at the pH of 4, characterized by X-ray diffraction (XRD) and electron microscopy (EM). The 1.89 eV direct energy gap was determined by UV-visible absorption, including two 688 and 857 nm emission wavelengths by photoluminescence (PL) spectroscopy. A possible formation mechanism of AgSbS2nanostructured flowers was also proposed according to the experimental results.

Preparation and Characterization of Skin-Colored N-Doped ZnO Nanocrystals

2010 ◽  
Vol 663-665 ◽  
pp. 243-246
Author(s):  
Han Mei Hu ◽  
Chong Hai Deng ◽  
Qiang Fang ◽  
Ya Gao ◽  
Meng Wei Song
Keyword(s):  
Photoelectron Spectroscopy ◽  
X Ray Diffraction ◽  
Visible Absorption ◽  
X Ray ◽  
Zno Nanocrystals ◽  
Uv Visible ◽  
Doped Zno ◽  
20 Nm ◽  
Strong Absorption Peak

In this paper, we report a simple two-step approach (microwave-calcinating) to prepare skin-colored N-doped ZnO nanocrystals. X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), X-ray photoelectron spectroscopy (XPS) and UV-visible absorption were used to characterize the as-synthesized products. The FESEM results reveal the products mainly take on the morphology of porous flake constructed by 20 nm nanoparticles. UV-Vis spectrum shows a strong absorption peak located at 384nm.

Synthesis and Characterization of Cu2O/TNTs Nanocomposites

2009 ◽  
Vol 79-82 ◽  
pp. 601-604
Author(s):  
Hui Liu ◽  
Li Ang Song ◽  
Wei Liu ◽  
Ge Su ◽  
Li Xin Cao ◽  
...  
Keyword(s):  
Diffuse Reflectance ◽  
Reflectance Spectra ◽  
Synthesis And Characterization ◽  
Visible Light Region ◽  
X Ray Diffraction ◽  
X Ray ◽  
Diffuse Reflectance Spectra ◽  
Transmission Electron ◽  
Light Region

Cu2O/TNTs(Titanium-based Nanotubes) composites were prepared by a simple “soak-deoxidize” method by using hydrazine hydrate as the reducing agent. The Cu2O/TNTs composites particles was made by changing pH and the mol ratio of Cu2+:N2H4H2O. The obtained composites were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), UV-Vis Diffuse reflectance spectra(DRS). The results of UV-Vis diffuse reflectance spectra indicate that the absorption edge of Cu2O/TNTs shows a shift to visible-light region, followed by an obvious absorption peak at 500–700 nm.

scholarly journals Synthesis and Characterization of Rhodium Doped on TiO2/HCP for Enhanced Photocatalytic Performance on Pentachlorophenol

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Saheed Olalekan Sanni ◽  
Omoruyi Gold Idemudia
Keyword(s):  
Visible Light ◽  
Surface Characterization ◽  
Sol Gel ◽  
Gravimetric Analysis ◽  
X Ray Diffraction ◽  
Sunlight Irradiation ◽  
X Ray ◽  
Light Region ◽  
Visible Spectra

Visible-light-responsive material based on Rhodium doped on titanium dispersed on dealuminated clinoptilolite (TiO2/HCP) was synthesized via a combination of the sol-gel method and photoreductive deposition technique. The photocatalyst surface characterization, structural and optical properties were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray analysis (EDAX), Fourier transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA), and UV-visible spectra (UV-VIS). Doping TiO2/HCP with Rh imparts a red shifting of the absorption band into the visible light region according to UV-VIS. The prepared composite materials were evaluated for their photocatalytic activities on pentachlorophenol (PCP) degradation under sunlight irradiation. The Rhodium doped TiO2/HCP exhibited enhanced photocatalytic activity and can be considered as a potential photocatalyst in wastewater treatment.

Fabrication and Characterization of NiOx/Bi2WO6 with Enhanced Photocatalytic Activity under Visible Light Illumination

2013 ◽  
Vol 690-693 ◽  
pp. 429-432
Author(s):  
Chun Ma
Keyword(s):  
Visible Light ◽  
Separation Efficiency ◽  
Diffuse Reflectance Spectroscopy ◽  
Light Illumination ◽  
X Ray Diffraction ◽  
Electron Pairs ◽  
X Ray ◽  
Visible Light Illumination ◽  
Uv Visible

The NiOx/Bi2WO6 photocatalyst with p-n heterojunction structure was synthesized. And the samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and UV-visible diffuse reflectance spectroscopy (UV-vis DRS). It was found that the RhB degradation rate with NiOx/Bi2WO6 was 1.62 times as great as that with the Bi2WO6 under visible light (λ>400 nm) by the photocatalytic measurements. The enhanced photocatalytic performance of the NiOx/Bi2WO6 sample was attributed to the improved separation efficiency of photogenerated hole-electron pairs generated by the p-n heterojunction between Bi2WO6 and NiOx.

Visible Light Photodegradation of Diisopropanolamine Using Cu/TiO2 Photocatalyst: Effect of Metal Loading

2014 ◽  
Vol 925 ◽  
pp. 273-277
Author(s):  
Raihan Mahirah Ramli ◽  
Chong Fai Kait ◽  
Abdul Aziz Omar
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Visible Light ◽  
Diffuse Reflectance ◽  
Cod Removal ◽  
X Ray Diffraction ◽  
X Ray ◽  
Metal Loading ◽  
Scanning Electron

Cu doped TiO2 at different metal loading was successfully prepared and investigated. Characterization of the prepared photocatalysts was carried out using X-ray diffraction (XRD), diffuse reflectance UVVis spectroscopy (DRUVVis) and scanning electron microscopy (SEM). Photodegradation study of aqueous diisopropanolamine solution (1000 ppm) using the prepared photocatalyst showed significant COD removal under visible light irradiation. The photocatalyst with 1.5 wt% Cu gave the highest COD removal of 45 %.

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