Oxygen-Doped Porous g-C₃N₄ via Oxalic Acid-Assisted Thermal Polycondensation as a Visible Light-Driven Photocatalyst for Bisphenol A Degradation

ACS Applied Nano Materials, Год журнала: 2023, Номер 6(18), С. 16567 - 16579

Опубликована: Сен. 8, 2023

Graphitic phase carbon nitride (g-C3N4) demonstrates tremendous potential for photocatalytic degradation of organic pollutants, but its performance is severely limited by the high recombination photogenerated electron–hole pairs. This study introduces an innovative approach oxalic acid-assisted thermal polycondensation to construct a series oxygen-doped porous g-C3N4 (OCN) nanostructured materials, which simultaneously utilizes heat-induced foaming mechanism acid achieve element doping modification. The results indicate that modified OCN-1.5 exhibited optimal activity. Under visible light conditions, efficiency catalyst toward bisphenol A (BPA, 30 mg L–1) reached 82.55% (240 min irradiation). represents significant improvement 60% compared traditional catalyst. as follows: on one hand, oxygen atoms alter charge distribution and symmetry g-C3N4, thereby enhancing separation carriers. Furthermore, under irradiation, it facilitates formation conjugated delocalized systems associated with e– h+ surface, leading accelerated mineralization OCN BPA at interface. Additionally, •O2– radicals generated from interfacial reactions can also directly oxidize simultaneously. On other construction nanostructure provides larger specific surface area channels diffusion carriers, capture transfer. Moreover, this structure offers more active sites adsorption pollutants. Therefore, synthetic strategy proposed in overcomes long-standing aggregation issue synthesis providing perspective scalable preparation high-performance photocatalysts removal

Язык: Английский

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Recent intensification strategies of Indium vanadate-based materials for photocatalytic application

Separation and Purification Technology, Год журнала: 2024, Номер 346, С. 127462 - 127462

Опубликована: Апрель 10, 2024

Язык: Английский

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Hydrogen Production Using Modern Photocatalysts

Coatings, Год журнала: 2024, Номер 14(3), С. 366 - 366

Опубликована: Март 20, 2024

Fossil fuels play a powerful role in the global economy and are therefore referred to as strategic raw materials. However, their massive use around world is associated with concerns about sufficiency of energy sources for future generations. Currently, fossil fuel resources heavily depleted, limited supplies. According forecasts, demand will constantly increase, so it necessary find solution that reconciles ever-increasing need protect environment. The main this problem acquire from renewable resources, especially direction obtaining alternative substitutes transportation fuels. One can replace existing hydrogen. An efficient way obtain compound through modern photocatalysts. Hence, purpose paper review recent literature on effective catalysts photocatalytic processes (e.g., glycerol conversion) enable synthesis

Язык: Английский

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

Molecules, Год журнала: 2024, Номер 29(7), С. 1612 - 1612

Опубликована: Апрель 3, 2024

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

Язык: Английский

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High-efficiency crystalline carbon nitride photocatalysts: Status and perspectives

Nano Research, Год журнала: 2024, Номер 17(9), С. 7840 - 7863

Опубликована: Авг. 1, 2024

Язык: Английский

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