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

Lee, Chang-Ju; Shee, Nirmal K.; Kim, Hee‐Joon

doi:10.1039/d3ra04117d

Cited by 9 publications

(4 citation statements)

References 68 publications

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“…These complexes are also known for their unique photo-physical properties. Therefore, structural studies of these compounds via various spectroscopic techniques are of significant value [36][37][38][39][40][41][42]. Within this context, the present study employs a one-step hydrothermal reaction between trans-dihydroxo(5,10,15,20-tetraphenylporphyrinato)Sn(IV) (SnP) and TiO 2 (P-25, 85% anatase and 15% rutile) in basic conditions to fabricate Sn(IV) porphyrin-imbedded TiO 2 nanotubes (SnP-TNTs) (Scheme 1).…”

Section: Introductionmentioning

confidence: 99%

Sn(IV)porphyrin-Incorporated TiO2 Nanotubes for Visible Light-Active Photocatalysis

Shee,

Lee,

Kim

2024

Molecules

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In this study, two distinct photocatalysts, namely tin(IV)porphyrin-sensitized titanium dioxide nanotubes (SnP-TNTs) and titanium dioxide nanofibers (TNFs), were synthesized and characterized using various spectroscopic techniques. SnP-TNTs were formed through the hydrothermal reaction of NaOH with TiO2 (P-25) nanospheres in the presence of Sn(IV)porphyrin (SnP), resulting in a transformation into Sn(IV)porphyrin-imbedded nanotubes. In contrast, under similar reaction conditions but in the absence of SnP, TiO2 (P-25) nanospheres evolved into nanofibers (TNFs). Comparative analysis revealed that SnP-TNTs exhibited a remarkable enhancement in the visible light photodegradation of model pollutants compared to SnP, TiO2 (P-25), or TNFs. The superior photodegradation activity of SnP-TNTs was primarily attributed to synergistic effects between TiO2 (P-25) and SnP, leading to altered conformational frameworks, increased surface area, enhanced thermo-chemical stability, unique morphology, and outstanding visible light photodegradation of cationic methylene blue dye (MB dye). With a rapid removal rate of 95% within 100 min (rate constant = 0.0277 min−1), SnP-TNTs demonstrated excellent dye degradation capacity, high reusability, and low catalyst loading, positioning them as more efficient than conventional catalysts. This report introduces a novel direction for porphyrin-incorporated catalytic systems, holding significance for future applications in environmental remediation.

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Section: Introductionmentioning

confidence: 99%

Sn(IV)porphyrin-Incorporated TiO2 Nanotubes for Visible Light-Active Photocatalysis

Shee,

Lee,

Kim

2024

Molecules

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“…The Soret band (strong absorption) and Q bands (weak absorption) are associated with the π → π* electron transfer within unsaturated porphyrin moieties. However, these optical characteristics can be altered synthetically by changing the central metal atom and peripheral side group functionality [54][55][56][57][58]. In solution, their fixed geometrical skeletons and inherent aromatic electronic features lead to their self-aggregation.…”

Section: Introductionmentioning

confidence: 99%

Recent Developments in Porphyrin-Based Metal–Organic Framework Materials for Water Remediation under Visible-Light Irradiation

Shee,

Kim

2024

IJMS

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Access to clean drinking water is a basic requirement, and eliminating pollutants from wastewater is important for saving water ecosystems. The porous structure and surface characteristics of metal–organic frameworks (MOFs) can function as a perfect scaffold for removing toxic compounds from wastewater. Porphyrins are promising building blocks for constructing MOFs. Porphyrin-based metal–organic frameworks (P-MOFs) have been fabricated using porphyrin ligands, metal clusters, or ions. These materials can harvest light from a wide region of the solar spectrum, and their framework morphology and physicochemical properties can be controlled by changing their peripheral subunits or metal ions. These porous crystalline materials have generated interest because of their distinctive characteristics, including large permanent porosity, interesting surface morphology, broad conformational diversity, high photostability, and semiconducting nature. This article discusses the recent progress and usefulness of P-MOFs. The fabrication procedures of P-MOFs are discussed, followed by the adsorptive and photocatalytic removal of contaminants from wastewater. The relationships between the geometries of P-MOFs and their light-harvesting and charge-transfer mechanisms for the photocatalytic degradation of pollutants are highlighted. Finally, some future perspectives and obstacles in the photodegradation usage of P-MOFs are discussed, along with feasible research directions to standardize efficient photocatalysts for improved photodegradation for water treatment.

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“…Sn(IV)porphyrins form stable six-coordinate complexes with two oxyanionic ligands in axial positions owing to the robust oxophilic nature of the Sn(IV) center [51,52]. This favorable coordination of Sn(IV)porphyrins was utilized to fabricate functional porous materials, including a coordination framework [53], multiporphyrin array [54], organic polymer [55], and mesoporous platform [56]. These Sn(IV)porphyrin-containing porous materials exhibit excellent physicochemical stability and remarkable photocatalytic activity for the degradation of organic dyes in aqueous solutions.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Sn(IV)porphyrin-Imbedded Silica Aerogel Composite

Jo,

Kim,

Kim

2023

J. Compos. Sci.

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Optoelectronic functional composite materials with porous structures are of great importance in various fields. A hybrid composite (SnP@SiA) composed of (trans-dihydroxo)(5,10,15,20-tetraphenylporphyrinato)tin(IV) (SnP) in silica aerogel (SiA) was successfully fabricated through the reaction of SnP with silanol groups of SiA in the presence of hexamethyldisilazane (HMDS). SnP@SiA was then characterized using various instrumental techniques. The zeta potential for SnP@SiA (−11.62 mV) was found to be less negative than that for SiA (−18.26 mV), indicating that the surface of SnP@SiA is covered by hydrophobic species such as SnP and trimethylsilyl groups. The Brunauer–Emmett–Teller (BET) surface area, pore volume, and average pore size of SnP@SiA are 697.07 m2/g, 1.69 cm3/g, and 8.45 nm, respectively, making it a suitable composite for catalytic applications. SnP@SiA, a photocatalyst with high porosity and a large surface area, yields promising performance in the photodegradation of acid orange 7 (AO7) under visible light irradiation in aqueous solution. This hybrid composite exhibited the desirable properties of aerogels along with the photoelectronic features of porphyrins. Therefore, this porphyrin-imbedded mesoporous material has valuable potential in various applications such as photocatalysis, light energy conversion, biochemical sensors, and gas storage.

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

Abstract: A robust Sn(iv) porphyrin-linked porous organic polymer was fabricated via gelation followed by supercritical CO2 drying for selective gas uptake capacity, removal of pollutant dye, and used a photocatalyst for the fabrication of silver nanoparticles.

Cited by 9 publications

References 68 publications

Sn(IV)porphyrin-Incorporated TiO2 Nanotubes for Visible Light-Active Photocatalysis

Sn(IV)porphyrin-Incorporated TiO2 Nanotubes for Visible Light-Active Photocatalysis

Recent Developments in Porphyrin-Based Metal–Organic Framework Materials for Water Remediation under Visible-Light Irradiation

Fabrication of Sn(IV)porphyrin-Imbedded Silica Aerogel Composite

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