Core-shell nanoconfinement: Nanoreactors for directional electron migration in photothermal-assisted photocatalytic hydrogen production

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 484, P. 149607 - 149607

Published: Feb. 12, 2024

Language: Английский

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Extended H-bonds/π-bonds networks for boosting electron transfer over polydopamine-covered nanocellulose/g-C3N4 toward efficient photocatalytic H2O2 production

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 349, P. 123872 - 123872

Published: April 24, 2024

Language: Английский

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Integrating Uranyl-Affinity “Hooks” into Conjugated Polymers Achieving Giant Built-in Electric Field for Boosting Photocatalytic Uranium Extraction from Seawater

Macromolecules, Journal Year: 2024, Volume and Issue: 57(12), P. 5679 - 5690

Published: June 10, 2024

Language: Английский

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Abundant Edge Active Sites‐Modified High‐Crystalline g‐C₃N₅ for Hydrogen Peroxide Production from Pure‐Water via a Quasi‐Homogeneous Photocatalytic Process

Small, Journal Year: 2024, Volume and Issue: 20(35)

Published: May 16, 2024

Ultrathin carbon nitride pioneered a paradigm that facilitates effective charge separation and acceleration of rapid migration. Nevertheless, the dissociation process confronts disruption owing to proclivity reaggregate, thereby impeding optimal utilization active sites. In response this exigency, adoption synthesis methodology featuring alkaline potassium salt-assisted molten salt is advocated in work, aiming craft nitrogenated graphitic (g-C

Language: Английский

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Efficient Proton Transfer and Charge Separation within Covalent Organic Frameworks via Hydrogen-Bonding Network to Boost H₂O₂ Photosynthesis

Nano Letters, Journal Year: 2024, Volume and Issue: 24(21), P. 6302 - 6311

Published: May 15, 2024

Photocatalytic synthesis based on the oxygen reduction reaction (ORR) has shown great promise for H2O2 production. However, low activity and selectivity of 2e– ORR result in a fairly efficiency Herein, we propose strategy to enhance proton-coupled electron transfer (PCET) process covalent organic frameworks (COFs), thereby significantly boosting photosynthesis. We demonstrated that construction hydrogen-bonding network, achieved by anchoring H3PO4 molecular network COF nanochannels, can greatly improve both proton conductivity photogenerated charge separation COFs. Thus, COF@H3PO4 exhibited superior photocatalytic performance generating without sacrificial agents, with solar-to-chemical conversion as high 0.69%. Results indicated much more localized spatial distribution energy band density led efficient separation, small barrier rate-limiting step from *OOH endowed higher selectivity.

Language: Английский

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Modulating the precursors of carbon nitride to boost local electron delocalization for H2O2 photosynthesis to remove oxytetracycline and its antibiotic resistant genes

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 345, P. 123690 - 123690

Published: Jan. 3, 2024

Language: Английский

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Carbon Quantum Dots Confined into Covalent Triazine Frameworks for Efficient Overall Photocatalytic H₂O₂ Production

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(29)

Published: March 14, 2024

Abstract Porous organic polymers have an outstanding performance in the field of photocatalysis with advantage diverse structure composition and purposeful molecular design. However, inherent high impedance poor electrical conductivity semiconductors still restrict charge transfer efficiency thus discount photocatalytic performance. Herein, study reports a highly conductive covalent triazine framework (CTF) loading carbon quantum dots (CQDs) into porous as electron transport medium. The addition CQDs (0.5 wt%) can enhance electronic CTF by tenfold. In addition, as‐prepared CQD‐CTFs express much‐promoted separation efficiency. Furthermore, embedded improve oxidization capacity increase affinity H + due to more negative zeta potential. enhanced oxidizing ability increased are positive for water oxidation reaction (WOR) oxygen reduction (ORR) process hydrogen peroxide (H 2 O ) generation, respectively. optimized CQD‐CTF exhibits generation rate up 1036 µmol g −1 h pure without any sacrificial agent under visible light, which is 4.6 times than pristine CTF. This work provides new idea efficient production semiconductors.

Language: Английский

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Phosphorylated g-C3N4/sulfur self-doped g-C3N4 homojunction carboxymethyl cellulose beads: An efficient photocatalyst for H2O2 production

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 663, P. 1087 - 1098

Published: Feb. 22, 2024

Language: Английский

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Construction of dual Z-scheme ternary carbon nitride homojunction pectin microspheres as a multifunctional photocatalyst for tetracycline degradation, H2O2 production, and N2 fixation

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 496, P. 153899 - 153899

Published: July 11, 2024

Language: Английский

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Photocatalytic self-Fenton degradation of tetracycline over Z-scheme functionalized g-C3N4/CeO2/Bi2S3 hydrogel beads: Dynamics, mechanism, degradation pathways and toxicity analysis

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 505, P. 159470 - 159470

Published: Jan. 10, 2025

Language: Английский

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