Atomically Precise Regulation of the N-Heterocyclic Microenvironment in Triazine Covalent Organic Frameworks for Coenzyme Photocatalytic Regeneration

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(30), P. 21025 - 21033

Published: July 18, 2024

Artificial photosynthesis represents a sustainable strategy for accessing high-value chemicals; however, the conversion efficiency is significantly limited by its difficulty in cycle of coenzymes such as NADH. In this study, we report series isostructural triazine covalent organic frameworks (COFs) and explore their N-substituted microenvironment-dependent photocatalytic activity NADH regeneration. We discovered that rational alteration N-heterocyclic species, which are linked to center through an imine linkage, can regulate both electron band structure planarity COF layer. This results different separation efficiencies photoinduced electron-hole pairs transfer behavior within between individual layers. The optimal catalyst herein achieves regeneration capacity 89% 20 min, outperforming most reported nanomaterial photocatalysts. Based on this, artificial system constructed green synthesis compound,

Language: Английский

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S-scheme heterojunction based on CuWO₄/WO₃ microspheres with an improved photocatalytic property under visible light irradiation

CrystEngComm, Journal Year: 2024, Volume and Issue: 26(20), P. 2610 - 2620

Published: Jan. 1, 2024

An S-scheme CuWO 4 /WO 3 nano-heterojunction photocatalyst is successfully synthesized by a hydrothermal route and impregnation–calcination method. The significantly improves the visible light degradation rate of MB dyes.

Language: Английский

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Cobalt titanate nanocatalyst for enhanced photodegradation of atrazine: kinetics, degradation efficiency, and mechanistic analysis

BMC Chemistry, Journal Year: 2025, Volume and Issue: 19(1)

Published: Feb. 7, 2025

In this study, cobalt titanate nanoparticles (CoTiO₃ NPs) were synthesized and applied as a photocatalyst to degrade atrazine. Scanning electron microscopic (SEM) analysis showed irregularly shaped particles prone agglomeration, while X-ray diffraction (XRD) confirmed the formation of rhombohedral CoTiO₃ phase with crystallite size 3.76 nm. Raman spectroscopic vibrations typical for Ti–O Co–O bonds well-defined structure. Thermogravimetric (TGA) that remained stable up 800 °C. The photocatalytic activity NPs was tested under sunlight irradiation results obtained demonstrated excellent efficiency compared photolysis reaction. influenced by concentration (20–50 ppm), catalyst dosage (0.5–2.0 mg/L), pH (4.21–10.22), time (0–120 min). exhibited surface area 32.5 m2/g (DFT) 828.03 m⁻1 (BET), pore volume 0.03925 m3/g, bandgap energy 2.66 eV. Kinetic studies degradation followed Langmuir–Hinshelwood model, reaction being rate-determining step. Adsorption rate constants found range from 0.03828 0.166528 min⁻1, ranged 0.373692 0.977135 min⁻1. also recyclability, maintaining high after five cycles. Scavenger experiments hydroxyl radicals (HO•) are responsible atrazine GCMS complete mineralization carbon dioxide (CO₂) water (H₂O) final products.

Language: Английский

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Harnessing Visible Light: A Polydiacetylene–Rh Complex for NADH Photoregeneration and CO₂ Reduction

ACS Applied Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 7, 2025

Language: Английский

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Development of Nb2O5/ITIC-4F/CuO hybrid heterojunction nanocomposite for efficient solar-driven photocatalytic hydrogen production

Materials Research Bulletin, Journal Year: 2025, Volume and Issue: unknown, P. 113532 - 113532

Published: April 1, 2025

Language: Английский

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Compartmentalization into Outer and Inner Shells of Hollow Nanospheres for Antibiosis Based on Chemistry and Physical Damages

Advanced Healthcare Materials, Journal Year: 2024, Volume and Issue: 13(19)

Published: March 19, 2024

Abstract There is a substantially ascending demand for nonantibiotic strategies to overcome the resistance of bacterial infections. Here, discovery distinctive antibacterial structure reported. The novel nanoparticle strategy proposed appreciable bacteria killing by smart design delayed addition crosslinkers into reaction mixture. [2‐(methacryloyloxy)ethyl]trimethylammonium chloride solution (MTCl), water‐soluble ionic liquid (IL), has narrow‐size material distribution, good whiteness, and high weather resistance. quaternary ammonium salt utilized efficiently permeate cell membranes through electrostatic interaction, accordingly, boasting beneficiary properties. More importantly, it allows attach nanomaterials easily, especially double‐shelled nanosphere. In light introduction 9‐amino(9‐deoxy)ep‐quinine (QNNH 2 ) on its inner shell, blocks nucleic acid glucose metabolism in bacteria, which betterment activity compared other nanomaterials. This physical/chemical/biological triple process eliminates need traditional antibiotics, fabrication properties described here provide insights based chemical physical effects.

Language: Английский

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Organic Polymer/Inorganic Heterostructure Coupled with Efficient Allosteric Bicycle Strand Displacement for Photochemical Sensing

Biosensors and Bioelectronics, Journal Year: 2024, Volume and Issue: 259, P. 116402 - 116402

Published: May 20, 2024

Language: Английский

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Intermarrying MOF Glass and Lead Halide Perovskites for Artificial Photosynthesis

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 29, 2024

The development of efficient artificial photosynthesis systems is crucial for sustainable chemical production, as they mimic natural processes to convert solar energy into products, thereby addressing both and environmental challenges. main bottlenecks in current research include fabricating highly selective, stable, scalable catalysts, well effectively harnessing the full spectrum light, particularly low-energy, long-wavelength portion. Herein, we report a novel composite photocatalyst system based on lead halide perovskites embedded functionalized MOF glass. construction well-defined interface between light-harvesting perovskite stable Rh single-atom-containing glass mimics functions photosystem I (PS I). This facilitates photoinduced electron generation under visible light subsequent transfer coenzyme (NADH) regeneration with high selectivity. regenerated NADH can then be consumed by immobilized enzymes CO

Language: Английский

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Organic Polymer/Inorganic Heterostructure Coupled with Efficient Allosteric Bicycle Strand Displacement for Photochemical Sensing

Published: Jan. 1, 2024

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Language: Английский

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Experimental and theoretical investigations of crab shell-based CaO nanoparticles for the photodegradation of penicillin G in water

International Journal of Environmental Science and Technology, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 3, 2024

Language: Английский

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