A robust UV–visible light‐driven SBA‐15‐PS/phthalhydrazide nanohybrid material with enhanced photocatalytic activity in the photodegradation of methyl orange

Abstract

SBA‐15‐PS/phthalhydrazide (PHD) is presented as a new heterogeneous inorganic–organic nanohybrid photocatalyst with high stability, superior recyclability and remarkable performance in the degradation of methyl orange (MO). Distinctive parameters, including photocatalyst and dye concentrations, pH and degradation time, were assessed for MO degradation catalysed by SBA‐15‐PS/PHD. This new heterogeneous nanocatalyst was characterized using Fourier transform infrared and UV–visible spectroscopies, thermogravimetric analysis, scanning and transmission electron microscopies and elemental analysis. Photodegradation of MO of up to 92% under the optimum conditions (photocatalyst = 0.015 g, [MO] = 4 ppm, pH = 2) was accomplished in 25 min using SBA‐15‐PS/PHD. A preliminary kinetic investigation was performed, and pseudo‐first‐order kinetics with a high rate constant (0.068 min−1) was found for MO degradation. Additional results showed that the photodegradation of MO was increased in the presence of hole scavengers. Therefore a photoreduction mechanism for MO degradation is proposed.

Photocatalytic Degradation of Ortho‐Nitrophenol using ZnO‐β‐CD Nanocomposite

“…Mg‐ZnO supported tetrazine also used for photodegradation of MB and ciprofloxacin [17] . SBA‐15‐PS phthalhydrazide nanohybrid used in the degradation of Methyl Orange with 92 % efficiency [18] . A series semiconductors like TiO 2 , CuO, ZnO and Fe 2 O 3 reported in literature to remove phenolic compounds from waste water [19,20] .…”

“…[17] SBA-15-PS phthalhydrazide nanohybrid used in the degradation of Methyl Orange with 92 % efficiency. [18] A series semiconductors like TiO 2 , CuO, ZnO and Fe 2 O 3 reported in literature to remove phenolic compounds from waste water. [19,20] Nanomaterials were generally used to fasten the degradation of hazardous organic chemical compounds.…”

Selective photocatalytic oxidation of aromatic alcohols to aldehydes with air by magnetic WO3ZnO/Fe3O4. In situ photochemical synthesis of 2-substituted benzimidazoles

“…1 Therefore, a great deal of concern is devoted to the photocatalytic degradation of organic wastes in water resources, efficient photocatalytic oxyfunctionalization of organic compounds and selective organic transformations under ambient environmentally friendly conditions, in particular with atmospheric air as a natural oxidant, under solar light. [2][3][4][5][6] Among various organic transformations, the selective photochemical oxidation of alcohols to carbonyl compounds is of prime importance due to its signicant role in the synthesis of a variety of ne chemicals, confectionaries, fragrances, and pharmaceutical industries. [7][8][9][10][11][12][13][14][15][16][17] A photocatalyst is capable of absorbing light and producing electron-hole pairs to force chemical reactions.…”

Synthesis of silver nanostructures in ionic liquid media and their application to photodegradation of methyl orange

“…1 Currently, various industries such as the textile, food, cosmetics, and pharmaceutical industry produce large amounts of wastewater, which is extremely harmful to humans and the environment. 2 Methyl orange (MO) is a good representative of anionic azo dyes, which does not decompose under ambient conditions and is usually resistant to classical biological treatment. Conventional physicochemical techniques such as adsorption, coagulation, and reverse osmosis are the most frequently used to remove MO from aqueous solutions.…”