Synthesis of Mo, W, and Mo- and W-Doped Multiwall VONTs via Sol-Gel and Hydrothermal Methods

Mo, W, and Mo and W were doped into multiwall vanadium oxide nanotubes. The syntheses were performed using sol-gel method followed by hydrothermal method. The synthesized samples were characterized by XRD, SEM, EDX, and TEM techniques. The XRD patterns of the synthesized samples indicated that Mo and W could be doped into VONTs totally up to 50%. The SEM and TEM images showed that the prepared samples have tubular and multiwall morphology and open ends.

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Influence of Preparation Methods of TiO2 Nano-Particle on Photodegradation of Methylene Blue

Materials Science Forum ◽

10.4028/www.scientific.net/msf.998.84 ◽

2020 ◽

Vol 998 ◽

pp. 84-89

Author(s):

Jittinat Sirichokthanasarp ◽

Dang Trung Tri Trinh ◽

Du Ang Dao Channei ◽

Kantapat Chansaenpak ◽

Wilawan Khanitchaidecha ◽

...

Keyword(s):

Methylene Blue ◽

Hydrothermal Method ◽

Organic Compounds ◽

High Efficiency ◽

Anatase Phase ◽

Sol Gel ◽

Nano Particles ◽

Preparation Methods ◽

Gel Method ◽

Sol Gel Method

The dye-pigments and organic compounds are known as significant pollutants in wastewater of textile industrial. Among of treatment technologies, the photocatalysis using TiO2 nano particles has potential on-site process for removing the dye-pigments and organic compounds, due to no hazardous waste and inexpensive. In this work, the TiO2 nanoparticles were synthesized by two different methods of hydrothermal and sol-gel. Nanoparticle of TiO2 synthesized by hydrothermal method contained pure anatase phase as similar as the TiO2 nanoparticles synthesized by sol-gel method. However, the TiO2 synthesized by hydrothermal method provided the higher specific surface area and pore volume rather than the another TiO2. Further, the high efficiency 86% of methylene blue photodegradation was observed during the by using TiO2 synthesized by hydrothermal method as photocatalyst, whereas the efficiency was only 72% for TiO2 synthesized by sol-gel method.

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Effects of Polyvinyl Pyrrolidone on Electromagnetic Properties of Hexagonal Ferrite Prepared by the Sol-Gel Method

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.197-198.593 ◽

2011 ◽

Vol 197-198 ◽

pp. 593-597

Author(s):

Xiao Gu Huang ◽

Jiao Chen ◽

Peng De Han ◽

Hong Zhou Wang ◽

Shao Teng Yan ◽

...

Keyword(s):

Sol Gel ◽

Hexagonal Ferrite ◽

Polyvinyl Pyrrolidone ◽

Electromagnetic Properties ◽

Hexagonal Ferrites ◽

Gel Method ◽

Sol Gel Method ◽

Method Effects ◽

Xrd Patterns ◽

Particle Thickness

Ba(Zn0.3Co0.7)2Fe16O27hexagonal ferrites have been prepared by sol-gel method. Effects of polyvinyl pyrrolidone (PVP) on crystalline phase, natural surface and electromagnetic properties were analyzed. The XRD patterns of samples with and without PVP added both showed the single phase of hexagonal ferrite. The particle thickness increased when PVP was added. Moreover, Ferrites prepared with 2.0g PVP added into the sol solution had lower complex permittivity. Addition of PVP can be an effective way to obtain the electromagnetic match of hexagonal ferrites.

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Characterization and Photocatalytic Activity of FeVO4 Photocatalysts Synthesized via a Surfactant-Assisted Sol-Gel Method

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.197-198.926 ◽

2011 ◽

Vol 197-198 ◽

pp. 926-930

Author(s):

Min Wang ◽

Qiong Liu ◽

Chen Zhi Jiang

Keyword(s):

Photocatalytic Activity ◽

Sol Gel ◽

X Ray Diffraction ◽

Experimental Conditions ◽

Gel Method ◽

Sol Gel Method ◽

Photodegradation Rate ◽

Photocatalytic Activities ◽

Xrd Patterns ◽

Surfactant Assisted

FeVO4photocatalysts were synthesized via a surfactant-assisted sol-gel method and characterized with X-ray diffraction (XRD), scanning electron microsoope （SEM）and specific surface area (BET). The photocatalytic activity was evaluated by photocatalytic degradation of methyl orange (MO) solution under visible light. The XRD patterns of no-surfactant-assisted, PEG-assisted, CTAB-assisted and SDS-assisted FeVO4, indicate that diffraction peaks can be well indexed as triclinc FeVO4. And the crystalline sizes of samples were evaluated as 113, 69, 66, 76 nm for FVO, FVO-PEG, FVO-CATB and FVO-SDS respectively.The addition of surfactant woul greatly affect the morphology of FeVO4photocatalysts, which can lead to different photocatalytic activities between them. In the experimental conditions used, the PEG-assisted FeVO4product had a much higher photocatalytic activity (the photodegradation rate was about 77% or so in 14h) than the other three products.

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Vanadium oxide thin films and fibers obtained by acetylacetonate sol–gel method

Thin Solid Films ◽

10.1016/j.tsf.2014.11.058 ◽

2015 ◽

Vol 574 ◽

pp. 15-19 ◽

Cited By ~ 24

Author(s):

O. Berezina ◽

D. Kirienko ◽

A. Pergament ◽

G. Stefanovich ◽

A. Velichko ◽

...

Keyword(s):

Thin Films ◽

Vanadium Oxide ◽

Sol Gel ◽

Oxide Thin Films ◽

Gel Method ◽

Sol Gel Method ◽

Vanadium Oxide Thin Films

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Synthesis and Luminescent Properties of Mn2+-Doped Zinc Silicate Phosphors by Sol-Gel Method

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.434-435.214 ◽

2010 ◽

Vol 434-435 ◽

pp. 214-216 ◽

Cited By ~ 1

Author(s):

Ji Ming Zhang ◽

Dong Lin Zhao ◽

Zeng Min Shen

Keyword(s):

Sol Gel ◽

Green Light ◽

Emission Spectra ◽

Luminescent Properties ◽

Nano Particles ◽

Light Emitting ◽

Gel Method ◽

Sol Gel Method ◽

Structural Details ◽

Xrd Patterns

Abstract. Green light emitting Mn2+-doped Zn2SiO4 (Zn2SiO4:Mn2+) phosphor nano-particles were synthesized by sol-gel method combined with a furnace firing from the sol-gel solution made with ZnO, MnCO3 and tetraethoxysilan. The influences of annealing temperatures on the microstructures and photoluminescent properties of the Zn2SiO4:Mn2+ phosphors were investigated. The structural details of the phosphors were examined through XRD and SEM. The photoluminescent properties of the Zn2SiO4:Mn2+ phosphors were characterized by excitation and emission spectra. The results indicate that the XRD patterns of the Zn2SiO4:Mn2+ phosphors exhibit a willemite structure (-Zn2SiO4). Green photoluminescence whose emission peak is located at 525 nm were observed from the synthesized phosphor particles under UV excitation. The photoluminescent mechanisms of the Zn2SiO4:Mn2+ phosphors were discussed.

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Facile preparation of vanadium oxide thin films on sapphire(0001) by sol–gel method

Journal of Sol-Gel Science and Technology ◽

10.1007/s10971-014-3271-2 ◽

2014 ◽

Vol 70 (1) ◽

pp. 40-46 ◽

Cited By ~ 12

Author(s):

Y. X. Guo ◽

C. W. Zou ◽

Y. F. Liu ◽

Y. Q. Xu ◽

X. L. Wang ◽

...

Keyword(s):

Thin Films ◽

Vanadium Oxide ◽

Sol Gel ◽

Oxide Thin Films ◽

Gel Method ◽

Sol Gel Method ◽

Facile Preparation ◽

Vanadium Oxide Thin Films

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Structural and magnetic properties of Sb3+ ions doped Ni-Ba-Co ferrite prepared by sol-gel method

10.21203/rs.3.rs-203610/v1 ◽

2021 ◽

Author(s):

Yanchun Zhang ◽

Aimin Sun ◽

Liqiong Shao ◽

Zhaxi Suonan

Keyword(s):

Magnetic Properties ◽

Spinel Phase ◽

Spinel Ferrite ◽

Energy Dispersive Spectrometer ◽

Sol Gel ◽

X Ray Diffraction ◽

Gel Method ◽

Sol Gel Method ◽

Composition And Structure ◽

Xrd Patterns

Abstract In the present work, nanocrystalline Sb3+ ions doped Ni0.2Ba0.1Co0.7Fe2−xSbxO4 (0 ≦ x ≦ 0.1, step by 0.025) ferrites were prepared via sol-gel method. The spinel-phase structure of samples can be confirmed by X-ray diffraction (XRD) patterns. The composition and structure were further studied by fourier transform infrared spectroscopy (FTIR). There were two typical characteristic bands ν1 and ν2 related to the stretching vibrations in spinel ferrite in FTIR spectra. Energy dispersive spectrometer (EDS) analyzed the elements of samples. It indicated that the elements of Ni, Ba, Co, Fe, O and Sb existed in the samples. Vibrating sample magnetometer was used to characterize magnetic properties. The saturation magnetization decreased from 57.65 emu/g to 44.50 emu/g with the increasing Sb3+ ions content, which is attributed to Fe3+ ions replaced by the Sb3+ ions. Remanent magnetization and coercivity first decreased and then increased slightly.

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Evaluation of Sodium Titanate Coating on Titanium by Sol-Gel Method In Vitro

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.330-332.777 ◽

2007 ◽

Vol 330-332 ◽

pp. 777-780 ◽

Cited By ~ 3

Author(s):

Fang Fang Wang ◽

Yun Mao Liao ◽

Min Wang ◽

Ping Gong ◽

Xiao Yu Li ◽

...

Keyword(s):

Alkaline Phosphatase ◽

Simulated Body Fluid ◽

Body Fluid ◽

Sol Gel ◽

Sodium Titanate ◽

Homogeneous Surface ◽

Gel Method ◽

Sol Gel Method ◽

Xrd Patterns

In this study, an exclusive sodium titanate (Na2Ti6O13) coating on titanium was fabricated by sol-gel method and evaluated in vitro. The coating was characterized by SEM and XRD. The bioactivity of the Na2Ti6O13 coating was evaluated by the biomimetic growth of apatite on its surface after soaked in an acellular simulated body fluid (SBF) for a period of time. In vitro osteoblasts culture was carried out to determine cytocompatibility by the measurement of the proliferation and alkaline phosphatase (ALP) activity of the cells. XRD patterns showed that Na2Ti6O13 was well crystallized when the coating was heated at 800°C. SEM observation exhibited that the Na2Ti6O13 coated titanium had a homogeneous surface without any cracks. After immersion in SBF, the apatite layer can be formed on the coating. The cells culture showed that the osteoblasts grew well on the Na2Ti6O13 coated titanium. It can be concluded that Na2Ti6O13 coating on titanium obtained by sol-gel method is bioactive.

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Barium Zirconium Titanate Powders Prepared by Sol–Gel Method

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.412.86 ◽

2011 ◽

Vol 412 ◽

pp. 86-89 ◽

Cited By ~ 2

Author(s):

Xiao Ling Deng ◽

Dong Jiao Guo ◽

Wei Cai ◽

Chun Lin Fu

Keyword(s):

Sol Gel ◽

Average Particle Size ◽

Average Particle ◽

Gravimetric Analysis ◽

Zirconium Titanate ◽

Thermal Gravimetric ◽

Gel Method ◽

Sol Gel Method ◽

Barium Zirconium Titanate ◽

Xrd Patterns

Barium zirconium titanate, Ba (Zr0.20Ti0.80)O3(BZT) powders were prepared by sol-gel method. These powders were characterized by thermal gravimetric and differential thermal gravimetric analysis (TG-DTA), X-ray diffraction (XRD). The grain size and lattice constant were determined. The decomposition of the precursors was monitored by TG-DTA. XRD patterns reveal that BZT powders heat-treated at 800°C present single phase with perovskite type cubic structure. The average particle size of the BZT powders is about 25 nm.

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