Hybrid Composite of Sn(IV)-Porphyrin and Mesoporous Structure for Enhanced Visible Light Photocatalytic Degradation of Organic Dyes

Abstract

Two hybrid composites (SnP@MCM−41 and SnP@SiO2) were fabricated by chemical adsorption of (trans-dihydroxo)(5,10,15,20-tetraphenylporphyrinato)tin(IV) (SnP) on mesoporous structured Mobil Composition of Matter No. 41 (MCM−41) and SiO2 nanoparticles. These materials were characterized by Fourier-transform infrared spectroscopy, ultraviolet–visible spectroscopy, fluorescence spectroscopy, transmission electron microscopy, and field-emission scanning electron microscopy techniques. The incorporation of SnP into MCM−41 and SiO2 supports efficient photocatalytic degradation of the anionic erioglaucine, cationic rhodamine B, and neutral m-cresol purple dyes under visible light irradiation in an aqueous solution. The performances of degradation of these dyes by these photocatalysts under visible light irradiation varied from 87 to 95%. The pseudo-first-order degradation rate constant of organic dyes for SnP@MCM−41 was higher than those of SnP@SiO2 and SnP. These visible light photocatalysts showed remarkable stability and reliable reusability.

Fabrication and properties of Sn(iv) porphyrin-linked porous organic polymer for environmental applications

“…Interestingly, SnP underwent dramatic weight loss starting only at 350 °C. 55 To investigate the chemical stability of SnPOP, different chemical environments, including different aqueous and organic solvents, were used to expose the SnPOP samples for 24 h. It was observed that SnPOP swelled in THF, DCM, acetone, and ethyl acetate, while retaining its gel form (Fig. S2 †).…”

“…It is important to note that we did not use any capping agent like poly(N-vinyl pyrrolidone) (PVP) or any surfactants. 53,55 The use of surfactants such as sodium dodecyl sulphate (SDS) makes it difficult to separate Ag NPs from the reaction mixture. We examined the optical and surface properties of the as-prepared Ag NPs using UV-vis spectrophotometry, FE-SEM/EDS, and TEM.…”

Investigating the Photocatalytic Degradation of Amaranth Dye in Water Environment using Visible Light‐Activated Fe‐Doped ZnO Nanoparticles

“…In comparison with the previous investigations, the Amaranth dye degradation for sample S3 is significantly higher (Table 3). [39][40][41][42][43][44] This is most likely due to the better response of S3 photocatalyst to visible light due to its lower bandgap, which allows the bulk of visible light to be consumed and generates a significant number of electron-hole pairs.…”

Sn(IV)porphyrin-Anchored TiO2 Nanoparticles via Axial-Ligand Coordination for Enhancement of Visible Light-Activated Photocatalytic Degradation

“…Previously, we and others immobilized Sn(IV)porphyrins on TiO 2 to construct nanohybrid materials for photocatalysis [36][37][38]. Sn(IV)porphyrin complexes were selected because they are outstanding building blocks for constructing functional porphyrin nanomaterials for the photocatalytic degradation of organic pollutant dyes [39][40][41][42][43][44]. Sn(IV)porphyrin centers are oxophilic and can form stable 6-coordinate complexes with two trans-axial oxyanion ligands (alkoxides and carboxylates) [45][46][47][48][49][50][51][52][53][54].…”