Characterization and hydrodesulfurization activity of CoMo catalysts supported on boron-doped sol–gel alumina

Boron-BiVO4 samples were synthesized by sol-gel method. They were characterized by UV-vis diffuse reflectance spectroscopy, X-ray diffraction. Photocatalytic activity of the obtained BiVO4 samples was investigated through degrading methylene blue (MB). The results reveal that boron-BiVO4 catalysts have monoclinic scheelite structure. The BiVO4 and Co-BiVO4 photocatalysts were responsive to visible light. Co-BiVO4 photocatalyst showed higher photocatalytic activity than pure BiVO4, resulting in the significantly improved efficiency of degradation of MB.

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AFM studies and electrochemical characterization of boron-doped diamond surfaces modified with metal oxides by the Sol-Gel method

Journal of the Brazilian Chemical Society ◽

10.1590/s0103-50532006000200007 ◽

2006 ◽

Vol 17 (2) ◽

pp. 257-264 ◽

Cited By ~ 27

Author(s):

Hugo B. Suffredini ◽

Giancarlo R. Salazar-Banda ◽

Sônia T. Tanimoto ◽

Marcelo L. Calegaro ◽

Sergio A. S. Machado ◽

...

Keyword(s):

Metal Oxides ◽

Sol Gel ◽

Electrochemical Characterization ◽

Boron Doped Diamond ◽

Diamond Surfaces ◽

Gel Method ◽

Sol Gel Method ◽

Boron Doped

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Boron-doped zinc oxide thin films prepared by sol-gel technique

Journal of Materials Science ◽

10.1007/s10853-005-0522-1 ◽

2005 ◽

Vol 40 (19) ◽

pp. 5285-5289 ◽

Cited By ~ 32

Author(s):

Radhouane Bel Hadj Tahar ◽

Noureddine Bel Hadj Tahar

Keyword(s):

Thin Films ◽

Zinc Oxide ◽

Sol Gel ◽

Oxide Thin Films ◽

Boron Doped ◽

Gel Technique

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Synthesis and microstructure of boron-doped alumina membranes prepared by the sol–gel method

Materials Letters ◽

10.1016/s0167-577x(01)00255-5 ◽

2001 ◽

Vol 50 (5-6) ◽

pp. 353-357 ◽

Cited By ~ 19

Author(s):

Tian-Dan Chen ◽

Lin Wang ◽

Hang-Rong Chen ◽

Jian-Lin Shi

Keyword(s):

Sol Gel ◽

Gel Method ◽

Sol Gel Method ◽

Alumina Membranes ◽

Boron Doped

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The suppression of a basic nitrogen compound influence on hydrodesulfurization activity of dibenzothiophene in treated diesel over Al2O3 supported CoMo catalysts by ZrO2 as a secondary support

Catalysis Communications ◽

10.1016/j.catcom.2015.01.013 ◽

2015 ◽

Vol 62 ◽

pp. 89-94 ◽

Cited By ~ 7

Author(s):

Pawinee Sintarako ◽

Piyasan Praserthdam ◽

Vivan Thammongkol ◽

Banpot Pokacharoenwatjana ◽

Watchara Yuanglamyai ◽

...

Keyword(s):

Nitrogen Compound ◽

Basic Nitrogen ◽

Como Catalysts ◽

Secondary Support ◽

Hydrodesulfurization Activity

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Sol-gel synthesis of boron doped TiO2/hollow glass bubbles composite powders for photocatalytic degradation of azophloxine-Effects of calcination

Current Nanoscience ◽

10.2174/1573413716999200819200603 ◽

2020 ◽

Vol 16 ◽

Author(s):

Wenjie Zhang ◽

Yuxuan Liu

Keyword(s):

Photocatalytic Degradation ◽

Calcination Temperature ◽

Sol Gel ◽

Hollow Spheres ◽

Degradation Efficiency ◽

Bet Surface Area ◽

Composite Powders ◽

Water Separation ◽

Doped Tio2 ◽

Boron Doped

Background: B-TiO2 was supported on the surface of iM16K glass bubbles to achieve a suitable density for the B-TiO2/iM16K composite hollow spheres. Aeration or stirring in the wastewater can lead to thorough mixing of photocatalyst and wastewater. Solid-water separation is quite easy because the materials can float on the water surface while stopping aeration or stirring. Methods: The iM16K glass bubbles were used to prepare boron-doped B-TiO2/iM16K composite hollow spheres through a sol-gel route. The materials were characterized by X-ray diffraction, scanning electron microscope, Fourier transform infrared spectroscopy, UV-Visible diffuse reflectance spectrometry, and N2 adsorption-desorption techniques. Photocatalytic degradation of azophloxine on the composites was determined. Results: The bandgap energy of the B-TiO2/iM16K composite was slightly less than 3.0 eV when the calcination temperature was below 500oC. The sample calcined at 350oC had a BET surface area of 88.6 m2 /g, while the value of the sample calcined at 800oC was 1.2 m2 /g. The maximum photocatalytic degradation efficiency was obtained for the sample calcined at 450oC, and nearly all of the original azophloxine molecules were decomposed after 120 min of irradiation. Photocatalytic degradation efficiency after 30 min of irradiation was enhanced from 18.8% to 47.9% when B-TiO2 dosage increased from 100 to 800 mg/L. Conclusion: Crystallization of anatase TiO2 was temperature dependent, and the properties of B-TiO2/iM16K composite hollow spheres were affected by phase composition of the boron-doped TiO2 layer. The change in calcination temperature can have significant effect on photocatalytic degradation of azophloxine. The production of hydroxyl radical depended on photocatalytic activity of the B-TiO2/iM16K composite hollow spheres.

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Synthesis, Characterization, and Evaluation of Boron-Doped Iron Oxides for the Photocatalytic Degradation of Atrazine under Visible Light

International Journal of Photoenergy ◽

10.1155/2012/598713 ◽

2012 ◽

Vol 2012 ◽

pp. 1-4 ◽

Cited By ~ 2

Author(s):

Shan Hu ◽

Guanglong Liu ◽

Duanwei Zhu ◽

Chao Chen ◽

Shuijiao Liao

Keyword(s):

Photocatalytic Activity ◽

Visible Light ◽

Photocatalytic Degradation ◽

Iron Oxides ◽

Visible Light Irradiation ◽

Sol Gel ◽

Band Gap Energy ◽

Light Irradiation ◽

Bet Surface Area ◽

Boron Doped

Photocatalytic degradation of atrazine by boron-doped iron oxides under visible light irradiation was investigated. In this work, boron-doped goethite and hematite were successfully prepared by sol-gel method with trimethylborate as boron precursor. The powders were characterized by XRD, UV-vis diffuse reflectance spectra, and porosimetry analysis. The results showed that boron doping could influence the crystal structure, enlarge the BET surface area, improve light absorption ability, and narrow their band-gap energy. The photocatalytic activity of B-doped iron oxides was evaluated in the degradation of atrazine under the visible light irradiation, and B-doped iron oxides showed higher atrazine degradation rate than that of pristine iron oxides. Particularly, B-doped goethite exhibited better photocatalytic activity than B-doped hematite.

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