Exceptional photocatalytic activity for g-C3N4 activated by H2O2 and integrated with Bi2S3 and Fe3O4 nanoparticles for removal of organic and inorganic pollutants

2019 ◽  
Vol 30 (3) ◽  
pp. 524-537 ◽  
Author(s):  
Mitra Mousavi ◽  
Aziz Habibi-Yangjeh ◽  
Davod Seifzadeh ◽  
Kazuya Nakata ◽  
S. Vadivel
Keyword(s):  
Photocatalytic Activity ◽  
Fe3o4 Nanoparticles ◽  
Inorganic Pollutants

Phytosynthesis and photocatalytic activity of magnetite (Fe3O4) nanoparticles using the Andean blackberry leaf

2016 ◽  
Vol 179 ◽  
pp. 310-315 ◽  
Author(s):  
Brajesh Kumar ◽  
Kumari Smita ◽  
Luis Cumbal ◽  
Alexis Debut ◽  
Salome Galeas ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Fe3o4 Nanoparticles ◽  
Magnetite Fe3o4

Photocatalysis for Oxidation of Phenol and Reduction of Inorganic Pollutants by Nanocrystalline TiO2-ZrO2 Powders

2004 ◽  
Vol 449-452 ◽  
pp. 289-292 ◽  
Author(s):  
Jae-Kil Han ◽  
Sung Min Choi ◽  
Ik Hyun Oh ◽  
Fumio Saito ◽  
Byung Teak Lee
Keyword(s):  
Photocatalytic Activity ◽  
Sol Gel ◽  
Homogeneous Distribution ◽  
Particle Sizes ◽  
Inorganic Pollutants ◽  
Composite Powders ◽  
Sol Gel Process ◽  
Oxidation Of Phenol ◽  
Xrd And Tem

TiO2(1-.ZrO2. (.=- 0.2, 0.4, 0.6 and 0.8) composite powders having a homogeneous distribution and nanocrystalline were successfully synthesized by sol-gel process using titanium iso-propoxide as precursor. The particle sizes of TiO2-ZrO2powders calcined at 600°C were measured ranging from 10nm to 19nm by XRD and TEM. For the comparison of photocatalytic activity, TiO2-ZrO2composite powders were tested in the degradation of phenol and the photoreduction of inorganic pollutants. The degradation of phenol increased with increase the content of anatase TiO2phase.

Facile immobilization of Ag nanoparticles on g-C3N4/V2O5 surface for enhancement of post-illumination, catalytic, and photocatalytic activity removal of organic and inorganic pollutants

2019 ◽  
Vol 467-468 ◽  
pp. 268-276 ◽  
Author(s):  
Hamdy S. EL-Sheshtawy ◽  
Hamza M. El-Hosainy ◽  
Kamel R. Shoueir ◽  
Ibrahim M. El-Mehasseb ◽  
Maged El-Kemary
Keyword(s):  
Photocatalytic Activity ◽  
Ag Nanoparticles ◽  
Inorganic Pollutants

Facile Approach for Synthesis of GO/ZnO Nanocomposite for Highly Efficient Photocatalytic Degradation of Organic Dyes under Visible Light

2017 ◽  
Vol 17 ◽  
pp. 121-126 ◽  
Author(s):  
S. Krishna Moorthy ◽  
C. Viswanathan ◽  
N. Ponpandian
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Organic Dyes ◽  
Bromophenol Blue ◽  
Inorganic Pollutants ◽  
Hydrothermal Technique ◽  
Methylene Orange ◽  
Methylene Violet ◽  
New Generation

A nanocomposite is a new generation of nanomaterials to improve the tailorable properties of the photocatalytic activity towards the removal of organic and inorganic toxic dyes from the aqueous medium. The hydrothermal technique were used to synthesis the nanocomposite and the particles were examined under the characterization techniques like XRD, UV-Vis, FTIR, FESEM and TEM. The organic and inorganic pollutants can be removed by many of the methods and the best among this is photocatalysis activity. The Methylene Blue (MB), Methylene Violet (MV), Methylene Orange (MO) and Bromophenol Blue (BB) are the two of the dyes which were used in this work. These dyes have excellent photocatalytic Properties to degrade the dyes under the visible light.

Visible light induced photocatalytic degradation of rhodamine B by magnetic bentonite

2016 ◽  
Vol 73 (10) ◽  
pp. 2345-2352 ◽  
Author(s):  
Wenbing Li ◽  
Dong Wan ◽  
Guanghua Wang ◽  
Lulu Lu ◽  
Xiaobi Wei
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Rhodamine B ◽  
Fe3o4 Nanoparticles ◽  
Organic Dyes ◽  
Reaction Parameters ◽  
Water Contaminants ◽  
Photocatalytic Activities ◽  
Repeated Use

The photocatalytic activity of magnetic bentonite, Fe3O4 nanoparticles decorated Al-pillared bentonite (Fe3O4/Al-B), for the degradation of rhodamine B (RhB) in the presence of H2O2 under visible light (VL) was evaluated. The effects of different reaction parameters such as catalyst dose, dye concentration and externally added H2O2 were also investigated. The magnetic bentonite showed good photocatalytic activity, magnetic separability and stability for repeated use. More than 95% of 40 mg/L RhB was converted within 3 h under VL with a catalyst dose of 0.5 g/L. Suitable mechanisms have been proposed to account for the photocatalytic activities in the presence and absence of H2O2. The efficiency of H2O2 in VL process was much higher than that of the dark process. Results obtained in the current study may be useful to develop a suitable photocatalyst for photocatalytic remediation of different water contaminants including organic dyes.

Photocatalytic degradation of methylene blue from aqueous solutions using nanopillars-TiO2 thin films: Batch reactor studies

2018 ◽  
Vol 18 (3) ◽  
pp. 81-91 ◽  
Author(s):  
C. Lalhriatpuia
Keyword(s):  
Thin Films ◽  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Organic Carbon ◽  
Photocatalytic Degradation ◽  
Batch Reactor ◽  
Tio2 Thin Films ◽  
Initial Concentration ◽  
Bet Specific Surface Area ◽  
Interfering Ions

Nanopillars-TiO2 thin films was obtained on a borosilicate glass substrate with (S1) and without (S2) polyethylene glycol as template. The photocatalytic behaviour of S1 and S2 thin films was assessed inthe degradation of methylene blue (MB) dye from aqueous solution under batch reactor operations. The thin films were characterized by the SEM, XRD, FTIR and AFM analytical methods. BET specific surface area and pore sizes were also obtained. The XRD data confirmed that the TiO2 particles are in its anatase mineral phase. The SEM and AFM images indicated the catalyst is composed with nanosized pillars of TiO2, evenly distributed on the surface of the substrate. The BET specific surface area and pore sizes of S1 and S2 catalyst were found to be 5.217 and 1.420 m2/g and 7.77 and 4.16 nm respectively. The photocatalytic degradation of MB was well studied at wide range of physico-chemical parameters. The effect of solution pH (pH 4.0 to 10.0) and MB initial concentration (1.0 to 10.0 mg/L) was extensively studied and the effect of several interfering ions, i.e., cadmium nitrate, copper sulfate, zinc chloride, sodium chloride, sodium nitrate, sodium nitrite, glycine, oxalic acid and EDTA in the photocatalytic degradation of MB was demonstrated. The maximum percent removal of MB was observed at pH 8.0 beyond which it started decreasing and a low initial concentration of the pollutant highly favoured the photocatalytic degradation using thin films and the presence of several interfering ions diminished the photocatalytic activity of thin films to some extent. The overall photocatalytic activity was in the order: S2 > S1 > UV. The photocatalytic degradation of MB was followed the pseudo-first-order rate kinetics. The mineralization of MB was studied with total organic carbon measurement using the TOC (total organic carbon) analysis.

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