scholarly journals BiOCl nanomaterials for photocatalytic degradations of nitrogenous organic compound

2021 ◽  
Vol 2076 (1) ◽  
pp. 012056
Author(s):  
Menglin Sun
Keyword(s):  
Electron Microscopy ◽  
Solvothermal Method ◽  
Uv Light ◽  
Photocatalytic Decomposition ◽  
Transmission Microscopy ◽  
Hierarchical Nanostructures ◽  
X Ray ◽  
Selected Area Electron Diffraction ◽  
Uv Light Irradiation ◽  
Transmission Electron

Abstract Different BiOCl hierarchical nanostructures with controllable morphologies were synthesized by a facile glycerol-mediated solvothermal method. Every products were subsequently and well crystallized characterized by a range of methods, such as scanning electron microscopy (SEM), X-ray powder diffraction (XRD), high-resolution transmission microscopy (HRTEM), transmission electron microscopy (TEM), selected area electron diffraction (SAED). The photocatalytic properties of the samples were further investigated through photocatalytic decomposition of Methyl Orange (MO) dye. The BiOCl hierarchical nanostructures was as a result of efficient photocatatlytic activity under UV light irradiation, which can degrade MO in a few minutes.

Synthesis, Characterization and Photocatalytic Activity of BiOCI Nanomaterials

2014 ◽  
Vol 1058 ◽  
pp. 69-73
Author(s):  
Meng Lin Sun ◽  
Qi Hang Zhao ◽  
Chun Fang Du ◽  
Zhi Liang Liu
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Uv Light ◽  
Photocatalytic Decomposition ◽  
Hierarchical Nanostructures ◽  
X Ray ◽  
Selected Area Electron Diffraction ◽  
Uv Light Irradiation ◽  
Transmission Electron ◽  
Photocatalytic Activities

BiOCl with 3D flower-like morphology was synthesized via a facile glycerol-mediated solvothermal method. The obtained products were well crystallized and subsequently characterized by a range of methods, such as X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED). The photocatalytic properties of the prepared samples were further investigated by photocatalytic decomposition of Methyl Orange (MO) dye. It is found that BiOCl hierarchical nanostructures exhibit efficient photocatalytic activities under UV light irradiation, which can decompose MO in a few minutes.

Solvothermal Synthesis of Novel 3D Peony-Like TiO2 Microstructures and its Enhanced Photocatalytic Activity

NANO ◽  
2018 ◽  
Vol 13 (05) ◽  
pp. 1850056 ◽  
Author(s):  
Yugan He ◽  
Qi Yan ◽  
Xiaoyu Chang ◽  
Meiying Zhu ◽  
Weiwei Wang ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Reaction Time ◽  
Uv Light ◽  
X Ray Diffraction ◽  
Reaction Parameters ◽  
X Ray ◽  
Uv Light Irradiation ◽  
Transmission Electron ◽  
Irradiation Power ◽  
Degussa P25

A TiO2 photocatalyst with peony-like microstructures and a large percentage of exposed {001} facets was synthesized using a facile solvethermal method. The peony-like TiO2 was obtained using HF as a capping agent, TiCl4 as the precursor and ethanol as the solvothermal agent. The parameters which influence the mophology and formation mechanism of the products including the HF concentration, the reaction time and temperature and the solvothermal solvent, were investigated. The samples were characterized using field emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction and N2 adsorption and desorption analysis. As the reaction time or reaction temperature increased, the morphology TiO2 changed from hexagonally assembled microspheres to peony-like microflowers which were composed of stacks of ultrathin nanosheets. The other reaction parameters also play a crucial role in the formation of the TiO2 microstuctures. Photocatalytic experiments showed that the synthesized TiO2 outperformed Degussa P25 in the photodegradation of methelene blue under a very weak UV light irradiation (power: 8[Formula: see text]W, light intensity: 0.4[Formula: see text]mW[Formula: see text]cm[Formula: see text]).

Preparation and Characterization of Helical Structure ZnS by Solvothermal Method

2011 ◽  
Vol 233-235 ◽  
pp. 1954-1957
Author(s):  
Xiao Yan Yan ◽  
Zhi Qiang Wei ◽  
Li Gang Liu ◽  
Xiao Juan Wu ◽  
Ge Zhang
Keyword(s):  
Electron Microscopy ◽  
Solvothermal Method ◽  
Helical Structure ◽  
Sodium Sulphide ◽  
X Ray Diffraction ◽  
Hexagonal Crystal ◽  
X Ray ◽  
Selected Area Electron Diffraction ◽  
Transmission Electron

Helical structure ZnS were successfully prepared via solvothermal method by the reaction of zinc acetate and sodium sulphide. The composition, morphology, and microstructure of the sample were characterized by X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM), the corresponding selected area electron diffraction (SAED) and X-ray energy spectrum (EDS). The experiment results show that the sample is 1-D hexagonal crystal ZnS and grows along the [002] direction, and is helical structure, with lengths in the range of 100-200 nm, the diameter about 5-15 nm, and pitch about 20nm.

Hydrothermal Synthesis and Photocatalytic Properties of ZnO Nanorods

2011 ◽  
Vol 374-377 ◽  
pp. 956-959
Author(s):  
Li Yun Yang ◽  
Gui Peng Feng ◽  
Yong Cai Zhang
Keyword(s):  
Electron Microscopy ◽  
Diffuse Reflectance ◽  
Uv Light ◽  
Zno Nanorods ◽  
Distilled Water ◽  
X Ray Diffraction ◽  
X Ray ◽  
Uv Light Irradiation ◽  
Transmission Electron ◽  
Degradation Of Methyl Orange

ZnO2 nanorods were synthesized via hydrothermal treatment of 2ZnCO3•3Zn(OH)2 powder in 30 mass% H2O2 aqueous solution at 170 °C for 12 h, and characterized by means of X-ray diffraction, transmission electron microscopy and UV–vis diffuse reflectance spectra. Besides, the photocatalytic activity of the as-synthesized ZnO2 nanorods was tested for the degradation of methyl orange in distilled water under UV light irradiation.

Hydrothermal Synthesis, Characterization and Photocatalytic Properties of Zn/Sn-Composite Oxides

2010 ◽  
Vol 148-149 ◽  
pp. 1204-1207
Author(s):  
Jing Hu ◽  
Ming Guo Ma ◽  
Jian Zhang Li
Keyword(s):  
Electron Microscopy ◽  
Uv Light ◽  
X Ray Diffraction ◽  
Hydrothermal Temperature ◽  
X Ray ◽  
Uv Light Irradiation ◽  
Composite Oxides ◽  
Transmission Electron ◽  
Photocatalytic Activities ◽  
Degradation Of Methyl Orange

The Zn/Sn-composite oxide nanogranules were synthesized via a simple hydrothermal method, and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The results show that the hydrothermal temperature significantly influences the morphology, microstructure, and composition of the as-prepared samples. And the nano-sized ZnO/Zn2SnO4 exhibited high photocatalytic activities on the degradation of methyl orange (MO) under ultraviolet (UV) light irradiation.

scholarly journals Photocatalysis of WO3Nanoplates Synthesized by Conventional-Hydrothermal and Microwave-Hydrothermal Methods and of Commercial WO3Nanorods

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Jarupat Sungpanich ◽  
Titipun Thongtem ◽  
Somchai Thongtem
Keyword(s):  
Electron Microscopy ◽  
Uv Light ◽  
X Ray Diffraction ◽  
X Ray ◽  
Microwave Hydrothermal ◽  
Uv Light Irradiation ◽  
Transmission Electron ◽  
Bet Analysis ◽  
Uv Visible ◽  
Hydrothermal Methods

The degradation of methylene blue (MB) dye by tungsten oxide (WO3) photocatalyst synthesized by the 200°C conventional-hydrothermal (C-H) and 270 W microwave-hydrothermal (M-H) methods and commercial WO3was studied under UV light irradiation for 360 min. The photocatalysts were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy, Raman spectrophotometry, and UV visible spectroscopy to determine phase, morphology, vibration mode, and optical property. The BET analysis revealed the specific surface area of 29.74, 37.25, and 33.56 m2/g for the C-H WO3nanoplates, M-H WO3nanoplates, and commercial WO3nanorods, respectively. In this research, the M-H WO3nanoplates have the highest photocatalytic efficiency of 90.07% within 360 min, comparing to the C-H WO3nanoplates and even commercial WO3nanorods.

Solvothermal Synthesis of Bi2Se3 Hexagonal Nanosheet Crystals

2011 ◽  
Vol 236-238 ◽  
pp. 1712-1716 ◽  
Author(s):  
Hai Tao Liu ◽  
Jun Dai ◽  
Jia Jia Zhang ◽  
Wei Dong Xiang
Keyword(s):  
Electron Microscope ◽  
Solvothermal Synthesis ◽  
Solvothermal Method ◽  
Raw Materials ◽  
X Ray Diffraction ◽  
Uniform Size ◽  
X Ray ◽  
Selected Area Electron Diffraction ◽  
Transmission Electron ◽  
Scanning Electron

Bismuth selenide (Bi2Se3) hexagonal nanosheet crystals with uniform size were successfully prepared via a solvothermal method at 160°C for 22 h using bismuth trichloride(BiCl3) and selenium powder(Se) as raw materials, sodium bisulfite(NaHSO3) as a reducing agent, diethylene glycol(DEG) as solvent, and ammonia as pH regulator. Various techniques such as X-ray diffraction (XRD), field-emission scanning electron microscope (FESEM), high-resolution transmission electron microscope (HRTEM), and selected area electron diffraction (SAED) were used to characterize the obtained products. Results show that the as-synthesized samples are pure Bi2Se3 hexagonal nanosheet crystals. A possible growth mechanism for Bi2Se3 hexagonal nanosheet crystals is also discussed based on the experiment.

Synthesis and Photoluminescence Properties of Novel SnO2 Zigzag Nanoribbons

2010 ◽  
Vol 97-101 ◽  
pp. 4213-4216
Author(s):  
Jian Xiong Liu ◽  
Zheng Yu Wu ◽  
Guo Wen Meng ◽  
Zhao Lin Zhan
Keyword(s):  
Electron Microscopy ◽  
Room Temperature ◽  
Vapour Deposition ◽  
Chemical Vapour ◽  
Photoluminescence Properties ◽  
X Ray Diffraction ◽  
X Ray ◽  
Selected Area Electron Diffraction ◽  
Transmission Electron ◽  
Ceramic Boat

Novel single-crystalline SnO2 zigzag nanoribbons have been successfully synthesized by chemical vapour deposition. Sn powder in a ceramic boat covered with Si plates was heated at 1100°C in a flowing argon atmosphere to get deposits on a Si wafers. The main part of deposits is SnO2 zigzag nanoribbons. They were characterized by means of X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM) and selected-area electron diffraction (SAED). SEM observations reveal that the SnO2 zigzag nanoribbons are almost uniform, with lengths near to several hundred micrometers and have a good periodically tuned microstructure as the same zigzag angle and growth directions. Possible growth mechanism of these zigzag nanoribbons was discussed. A room temperature PL spectrum of the zigzag nanoribbons shows three peaks at 373nm, 421nm and 477nm.The novel zigzag microstructures will provide a new candidate for potential application.

Novel synthesis and characterization of nanocrystalline thoria from oxalate precursor via reverse micellar route

2013 ◽  
Vol 101 (1) ◽  
pp. 7-12 ◽  
Author(s):  
R. Gupta ◽  
S. K. Gupta ◽  
S. K. Aggarwal
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Ammonium Oxalate ◽  
Thorium Nitrate ◽  
Oxalate Precursor ◽  
X Ray ◽  
Selected Area Electron Diffraction ◽  
Transmission Electron ◽  
Average Grain Size ◽  
Thorium Oxalate

Abstract Nanoparticles of thorium oxalate were synthesized by the reaction of thorium nitrate and ammonium oxalate by the microemulsion method. The Th02 nanoparticles were obtained by heating thorium oxalate nanoparticles at 500 °C in air. The oxalate and oxide nanoparticles of thorium were characterized by transmission electron microscopy (TEM), X-ray powder diffraction (XRD), thermogravimetric analysis (TGA) and selected area electron diffraction (SAED). X-ray diffraction studies showed the mono-phasic nature of the powder thoria. The particle size was obtained from X-ray line broadening (~l0 nm) and transmission electron microscopy (~l0 nm). Dynamic light scattering (DLS) was used to calculate the average grain size of the particles. SAED confirmed the nanocrystalline nature of thoria particles. High resolution transmission electron microscopy (HRTEM) was also carried out to understand the morphology of the system. The monodisperse nanoparticles of thoria are promising for future reactor technologies.

HRTEM Investigation of Precipitates in Al-Zn-In-Mg-Ti-Ce Anode Alloy

2011 ◽  
Vol 189-193 ◽  
pp. 1036-1039
Author(s):  
Jing Ling Ma ◽  
Jiu Ba Wen ◽  
Yan Fu Yan
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
High Resolution ◽  
Electron Diffraction ◽  
Hexagonal Structure ◽  
Orientation Relation ◽  
X Ray ◽  
Selected Area Electron Diffraction ◽  
Transmission Electron ◽  
Scanning Electron

The precipitates of Al-5Zn-0.02In-1Mg-0.05Ti-0.5Ce (wt %) anode alloy were studied by scanning electron microscopy, X-ray microanalysis, high resolution transmission electron microscopy and selected area electron diffraction analyses in the present work. The results show that the alloy mainly contains hexagonal structure MgZn2 and tetragonal structure Al2CeZn2 precipitates. From high resolution transmission electron microscopy and selected area electron diffraction, aluminium, Al2CeZn2 and MgZn2 phases have [0 1 -1]Al|| [1 -10]Al2CeZn2|| [-1 1 0 1]MgZn2orientation relation, and Al2CeZn2 and MgZn2 phases have the [0 2 -1]Al2CeZn2|| [0 1 -10]MgZn2orientation relation.

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