Synthesis and characterization of La1-xCexNiO3 with enhanced visible light photocatalytic activities

A series of La1-xCexNiO3 photocatalysts with different content of cerium element have been synthesized by sol-gel method. The as-prepared products were characterized by powder X-ray diffraction (XRD) and scanning electron microscopy (SEM). The photocatalytic activities of these La1-xCexNiO3 composites under visible-light irradiation were evaluated by the degradation of methyl orange (MO). The effect of important operational parameters such as catalyst amount, reaction temperature, irradiation time, and comparison of photocatalytic activity with different dyes including methyl orange, alizarin red, alizarin yellow, xylenol orange were also studied. The results revealed that the La0.8Ce0.2NiO3 (LCNO) composites exhibited much higher photocatalytic activities than pure LaNiO3 (LNO).

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Photocatalytic Activity of Bismuth Ferrite Nanoparticles Synthesized via Sol-Gel Route

Zeitschrift für Physikalische Chemie ◽

10.1515/zpch-2018-1225 ◽

2019 ◽

Vol 233 (5) ◽

pp. 595-607 ◽

Cited By ~ 4

Author(s):

Mohsin Siddique ◽

Noor Muhammad Khan ◽

Muhammad Saeed

Keyword(s):

Visible Light ◽

Photocatalytic Degradation ◽

Irradiation Time ◽

Bismuth Ferrite ◽

Sol Gel ◽

Reaction System ◽

Light Conditions ◽

X Ray Diffraction ◽

Light Region ◽

Gel Technique

Abstract Nanosized, magnetically separable bismuth ferrite (BFO) nanoparticles, pertaining a crystallite size in the range of 14–15 nm were prepared via facile sol-gel technique. The product was characterized by scanning electron microscopy, X-ray diffraction, and Fourier-transform infrared spectroscopy. The product was explored for the photocatalytic mineralization of rhodamine B (RB) dye in aqueous medium. The effect of different investigational parameters such as amount of photocatalyst, initial dye concentration and irradiation time on the photocatalytic degradation of RB was studied. The results reveal that the catalyst shows good degrading ability under normal pH and visible light conditions. BFO nanoparticles demonstrated a strong absorption ability in the visible-light region, which lead to efficient photocatalytic degradation of RB dye The reaction system was heterogeneous in nature in which the catalyst can be separated by a normal magnet.

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Preparation of Composite Banana Peel-TiO2 for Methyl Orange Dyes Removal

Journal of Physics Conference Series ◽

10.1088/1742-6596/2080/1/012030 ◽

2021 ◽

Vol 2080 (1) ◽

pp. 012030

Author(s):

Hui Ling Teoh ◽

Siti Aida Ibrahim ◽

Ainun Rahmahwati Ainuddin ◽

Rosniza Hussin ◽

Kamdi Zakiah

Keyword(s):

Activated Carbon ◽

Methyl Orange ◽

Morphological Analysis ◽

Irradiation Time ◽

Group Formation ◽

Sol Gel ◽

Banana Peel ◽

Wastewater Remediation ◽

X Ray Diffraction ◽

Dye Pollution

Abstract Composite banana peel activated carbon-TiO2 has successfully prepared using the sol-gel method. In this research, banana peel was activated using KOH activator. This study aimed to compose biomass wastes (banana peels) with TiO2 catalyst for Methyl Orange (MO) dye removal. The banana peel-activated carbon (BPAC) composition varied from 20, 50 and 70 wt. %. The prepared samples were calcined at 400 °C for 4 h. The structure and properties of the prepared samples were characterized by X-ray Diffraction (XRD), Fourier Transmission Infra-Red (FTIR), Scanning Electron Microscope (SEM) and Ultraviolet-Visible Spectrophotometer (UV-Vis). The results obtained from XRD showed the presence of anatase, rutile and potassium formate. The morphological analysis TiO2 showed agglomeration whereas pores were observed in BPAC. FTIR results indicated a C-O stretching and CH functional group formation through a modification that it does not exhibit in pure TiO2. The sample with 50 wt% BPAC-TiO2 has the highest MO removal (72.5%) within 3 h of irradiation time. From the current finding, banana peel-activated carbon-TiO2 can be commercialized for wastewater remediation especially in treating dye pollution.

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Study on the Influence Factors of ZnFe2O4 and TiO2 Composite Films Photoelectrocatalytic Properties

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.287-290.2199 ◽

2011 ◽

Vol 287-290 ◽

pp. 2199-2202

Author(s):

Gui Qin Hou ◽

Wen Li Zhang ◽

Shui Jing Gao ◽

Xiao Yan Wang

Keyword(s):

Methyl Orange ◽

Sol Gel ◽

Composite Films ◽

Influence Factors ◽

Nanocomposite Films ◽

Gel Method ◽

Sol Gel Method ◽

Conductive Glass ◽

Photocatalytic Activities ◽

Film Layer

The ZnFe2O4 and TiO2 nanocomposite films was prepared by Sol-Gel method on conductive glass, and the influence factors of it’s photoelectrocatalytic performence such as the film layer, pole and voltage was investigated. The results indicated that: the photocatalytic effects of composite films with ZnFe2O4+ TiO2+ ZnFe2O4 was the best. The decomposing ratio of methyl orange with the photoelectrocatalysis of composite films at voltage 0.2-6V all increased unstably.At the same time, the distance from films to pole plank also had the effects on the photocatalytic activities of the films.

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Visible-Light-Induced Photocatalytic Activity of Boron-Doped BiVO4

Materials Science Forum ◽

10.4028/www.scientific.net/msf.809-810.890 ◽

2014 ◽

Vol 809-810 ◽

pp. 890-894

Author(s):

Dan Li ◽

Lian Wei Shan ◽

Gui Lin Wang ◽

Li Min Dong ◽

Wei Li ◽

...

Keyword(s):

Photocatalytic Activity ◽

Visible Light ◽

Diffuse Reflectance ◽

Diffuse Reflectance Spectroscopy ◽

Sol Gel ◽

Reflectance Spectroscopy ◽

Scheelite Structure ◽

X Ray Diffraction ◽

X Ray ◽

Boron Doped

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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Preparation and Photocatalytic Activity of Cu/BiVO4 by Solid State Grinding Method for Degradation of Methyl Orange

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.703.321 ◽

2016 ◽

Vol 703 ◽

pp. 321-325

Author(s):

Hai Feng Chen ◽

Jia Mei Chen ◽

Zhi Xue Pan

Keyword(s):

Methyl Orange ◽

Solid State ◽

Visible Light ◽

Raw Materials ◽

X Ray Diffraction ◽

Visible Absorption ◽

Illumination Time ◽

Grinding Method ◽

Ft Ir ◽

Degradation Of Methyl Orange

In this work, novel Cu/BiVO4 photocatalyst were prepared by a low-temperature solid state grinding method using Bi (NO3)3•5H2O, NH4VO3 and Cu (NO3)2•2H2O as raw materials. The structure and properties of the samples were characterized by Infrared Spectroscopy (FT-IR), X-ray diffraction (XRD) and UV-vis diffused reflectance spectroscopy (DRS); Using the degradation of methyl orange (MO) as the probe, it was simulated as the degradation of sewage under the visible light to study the influence of the illumination time and the amount of photocatalysts. Compared with the pure BiVO4, the visible-light absorption scope of BiVO4 was broadened by doping Cu, the UV-Visible absorption edges were slightly red shift and the band gap was narrower. Comparatively speaking, the results indicted that the doped Cu enhanced the photocatalytic activities of BiVO4.

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FeYO3@rGO nanocomposites: Synthesis, characterization and application in photooxidative degradation of atrazine under visible light

Materials Express ◽

10.1166/mex.2021.1957 ◽

2021 ◽

Vol 11 (5) ◽

pp. 706-716

Author(s):

Nada D. Al-Khthami ◽

Tariq Altalhi ◽

Mohammed Alsawat ◽

Mohamed S. Amin ◽

Yousef G. Alghamdi ◽

...

Keyword(s):

Visible Light ◽

Photoelectron Spectroscopy ◽

Sol Gel ◽

Bandgap Energy ◽

X Ray Diffraction ◽

X Ray ◽

Transmission Electron ◽

Reduced Graphene ◽

Structural Surface ◽

Adsorption Desorption

Different organic pollutants have been remediated photo catalytically by applying perovskite photocatalysts. Atrazine (ATR) is a pesticide commonly detected as a pollutant in drinking, surface and ground water. Herein, FeYO3@rGO heterojunction was synthesized and applied for photooxidation decomposition of ATR. First, FeYO 3nanoparticles (NPs) were prepared via routine sol-gel. After that, FeYO3 NPs were successfully incorporated with different percentages (5, 10, 15 and 20 wt.%) of reduced graphene oxide (rGO) in the synthesis of novel FeYO3@rGO photocatalyst. Morphological, structural, surface, optoelectrical and optical characteristics of constructed materials were identified via X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Transmission electron microscopy (TEM), adsorption/desorption isotherms, diffusive reflectance (DR) spectra, and photoluminescence response (PL). Furthermore, photocatalytic achievement of the constructed materials was evaluated via photooxidative degradation of ATR. Various investigations affirmed the usefulness of rGO incorporation on the advancement of formed photocatalysts. Actually, novel nanocomposite containing rGO (15 wt.%) possessed diminished bandgap energy, as well as magnified visible light absorption. Furthermore, such nanocomposite presented exceptional photocatalytic achievement when exposed to visible light as ATR was perfectly photooxidized over finite amount (1.6 g · L-1) from the optimized photocatalyst when illuminated for 30 min. The advanced photocatalytic performance of constructed heterojunctions could be accredited mainly to depressed recombination amid induced charges. The constructed FeYO3@rGO nanocomposite is labelled as efficient photocatalyst for remediation of herbicides from aquatic environments.

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Silver Orthophosphate Immobilized on Flaky Layered Double Hydroxides as the Visible-Light-Driven Photocatalysts

International Journal of Photoenergy ◽

10.1155/2012/263254 ◽

2012 ◽

Vol 2012 ◽

pp. 1-6 ◽

Cited By ~ 20

Author(s):

Xianlu Cui ◽

Yaogang Li ◽

Qinghong Zhang ◽

Hongzhi Wang

Keyword(s):

Visible Light ◽

Diffuse Reflectance Spectroscopy ◽

Diffraction Field ◽

X Ray Diffraction ◽

Transmission Electron ◽

Photocatalytic Activities ◽

Visible Light Driven ◽

Double Hydroxide ◽

Double Hydroxides ◽

Acid Red G

Flaky layered double hydroxide (FLDH) was prepared by the reconstruction of its oxide in alkali solution. The composites with FLDH/Ag3PO4mass ratios at 1.6 : 1 and 3 : 1 were fabricated by the coprecipitation method. The powders were characterized by X-ray diffraction, field-emission scanning electron microscopy, transmission electron microscope, and UV-vis diffuse reflectance spectroscopy. The results indicated that the well-distributed Ag3PO4in a fine crystallite size was formed on the surface of FLDH. The photocatalytic activities of the Ag3PO4immobilized on FLDH were significantly enhanced for the degradation of acid red G under visible light irradiation compared to bare Ag3PO4. The composite with the FLDH/Ag3PO4mass ratio of 3 : 1 showed a higher photocatalytic efficiency.

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An Ultrasound Application for TiO2 Photocatalytic Degradation of Methyl Orange

Materials Science ◽

10.5755/j02.ms.21622 ◽

2021 ◽

Author(s):

Xianzhen Diao ◽

Jin XU ◽

Yufei WANG

Keyword(s):

Methyl Orange ◽

Photocatalytic Degradation ◽

Photocatalytic Performance ◽

Sol Gel ◽

Methyl Orange Solution ◽

X Ray Diffraction ◽

Doping Amount ◽

Nickel Doping ◽

Ultrasound Application ◽

Ultrasound Technology

Nanometer TiO2 photocatalysts were prepared by the sol–gel method. The catalysts were characterized by X-ray diffraction, Fourier-transform infrared spectroscopy, ultraviolet-visible spectroscopy, and other techniques. Methyl orange solution was used for the degradation of the organic material and ultrasonic technology was used to determine the photocatalytic performance of the catalysts. The results show that the photocatalytic performance of the Ni-N-TiO2 is clearly improved under ultrasonic conditions. The TiO2 photocatalytic degradation effect is optimal at a catalyst concentration of 0.3 g/L, an initial concentration of the organic matter of 0.03 mmol/L, a nickel-doping amount of 2 mol %, and a nitrogen-doping amount of 15 mol %. The use of ultrasound technology in combination with photocatalysis has a positive effect and results in a TiO2 degradation rate of methyl orange of 95 % after 3 h.

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Preparation of TiO2 nanorods by Sol–Gel template method and measured its photo- catalytic activity for degradation of methyl orange

Iraqi Journal of Physics (IJP) ◽

10.30723/ijp.v13i26.298 ◽

2019 ◽

Vol 13 (26) ◽

pp. 171-177

Author(s):

Ban M. Al-Shabander

Keyword(s):

Methyl Orange ◽

Sol Gel ◽

Tio2 Nanorods ◽

X Ray Diffraction ◽

X Ray ◽

Force Microscopy ◽

Photo Catalytic Activity ◽

Atomic Force ◽

Degradation Of Methyl Orange ◽

Titanium Dioxide Nanorods

Titanium dioxide nanorods have been prepared by sol-gel templatemethod. The structural and surface morphology of the TiO2 nanorods wasinvestigated by X-ray diffraction (XRD) and atomic force microscopy(AFM), it was found that the nanorods produced were anatase TiO2 phase.The photocatalytic activity of the TiO2 nanorods was evaluated by thephoto degradation of methyl orange (MO). The relatively higherdegradation efficiency for MO (D%=78.2) was obtained after 6h of exposedto UV irradiation.

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