Magnetic field effect on the photocatalytic degradation of methyl orange by commercial TiO₂ powder

Abstract

In this work, by taking commercial P25 hydrophilic titanium dioxide (TiO2) as a photocatalyst, the magnetic field effect (MFE) on the photodegradation rate of methyl orange is studied.

Effect of magnetic field on improvement of photocatalytic performance of V2O5/TiO2 nanoheterostructure films prepared by sparking method

“…In the case of the wide angle TVH sample, large-scale spiral motion of the particles is generated resulting in a clear orientation pattern of the film. These modified morphologies significantly increase the specific surface area, which is largely beneficial for the adsorption of dye molecules and promotes photo-generated charge transport on the surface of films 17 .

Figure 2 Surface morphology of samples located in different magnetic fluxes arrangements.

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Methylene blue photodegradation using as‐synthesized CeO2 nanoparticles

“…Today, water pollution by various pollutants such as organic compounds [1][2][3][4][5][6] and dyes [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] is one of the main problems. Organic dyes such as trypan blue, [7] methylene blue, [8,9,17,20] methyl green, [21] and methyl orange [11,16] are one of the most important sources of water pollution that used in various industries.…”

“…Therefore, one of the most important goals for chemists is to remove these organic dyes from contaminated water. [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] Many methods have been used to remove organic dyes from contaminated water such as adsorption, [10,[19][20][21] ion exchange, [22] filtration, [23] biodegradation, [24] chemical oxidation, [25] and photodegradation. [7][8][9]11,12,14] Some of these methods are relatively expensive and require complex equipment.…”

“…In recent years, there have been very interesting studies on the application and properties of nanoparticles, such as usage of the anode as an absorbent in Li-ion batteries, and also as a photocatalyst in water pollution. [26][27][28][29][30][31][32][33][34][35] Therefore, various groups have broadly explored the catalytic activity of different nanostructure compounds for the degradation of oxytetracycline, norfloxacin, N 2 reduction, hydrogen evaluation, etc.. [36][37][38][39][40][41][42][43][44][45][46][47] But, the photocatalytic degradation method, [7][8][9]11,12,[14][15][16][17][18] which is simple, has high efficiency, and does not require expensive equipment, is one of the efficient and suitable methods for removing water pollution. One of the important parameters in the efficiency of this method is the type of photocatalyst used such as Fe 2 O 3, [12,14] TiO 2, [15] CdWO 4, [18] NiO, [19] Bi 2 O 3 -Al 2 O 3, [17] Cr 2 O 3, [11] MCM-41 [21] and CeO 2.…”

“…[26][27][28][29][30][31][32][33][34][35] Therefore, various groups have broadly explored the catalytic activity of different nanostructure compounds for the degradation of oxytetracycline, norfloxacin, N 2 reduction, hydrogen evaluation, etc.. [36][37][38][39][40][41][42][43][44][45][46][47] But, the photocatalytic degradation method, [7][8][9]11,12,[14][15][16][17][18] which is simple, has high efficiency, and does not require expensive equipment, is one of the efficient and suitable methods for removing water pollution. One of the important parameters in the efficiency of this method is the type of photocatalyst used such as Fe 2 O 3, [12,14] TiO 2, [15] CdWO 4, [18] NiO, [19] Bi 2 O 3 -Al 2 O 3, [17] Cr 2 O 3, [11] MCM-41 [21] and CeO 2. [7][8][9] Metal oxide nanoparticles are the most important photocatalysts due to their high surface area and good ability to absorb visible and UV radiation and interact with different organic dyes.…”