A [001]‐Oriented Hittorf's Phosphorus Nanorods/Polymeric Carbon Nitride Heterostructure for Boosting Wide‐Spectrum‐Responsive Photocatalytic Hydrogen Evolution from Pure Water

Angewandte Chemie International Edition, Journal Year: 2019, Volume and Issue: 59(2), P. 868 - 873

Published: Oct. 30, 2019

Abstract Red phosphorus is a promising photocatalyst with wide visible‐light absorption up to 700 nm, but the fast charge recombination limits its photocatalytic hydrogen evolution reaction (HER) activity. Now, [001]‐oriented Hittorf's (HP) nanorods were successfully grown on polymeric carbon nitride (PCN) by chemical vapor deposition strategy. Compared bare PCN and HP, optimized PCN@HP hybrid exhibited significantly enhanced activity, HER rates reaching 33.2 17.5 μmol h −1 from pure water under simulated solar light visible irradiation, respectively. It was theoretically experimentally indicated that strong electronic coupling between HP gave rise greatly accelerated photoinduced electron–hole separation transfer, which benefited performance.

Language: Английский

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Perylenetetracarboxylic acid nanosheets with internal electric fields and anisotropic charge migration for photocatalytic hydrogen evolution

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: April 19, 2022

Abstract Highly efficient hydrogen evolution reactions carried out via photocatalysis using solar light remain a formidable challenge. Herein, perylenetetracarboxylic acid nanosheets with monolayer thickness of ~1.5 nm were synthesized and shown to be active photocatalysts production rates 118.9 mmol g −1 h . The carboxyl groups increased the intensity internal electric fields from perylene center border by 10.3 times promote charge-carrier separation. photogenerated electrons holes migrated edge plane, respectively, weaken recombination. Moreover, reduction potential increases −0.47 V −1.13 due decreased molecular conjugation enhances ability. In addition, created hydrophilic sites. This work provides strategy engineer structures future photocatalysts.

Language: Английский

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Nitrogen defects/boron dopants engineered tubular carbon nitride for efficient tetracycline hydrochloride photodegradation and hydrogen evolution

Applied Catalysis B Environment and Energy, Journal Year: 2021, Volume and Issue: 303, P. 120932 - 120932

Published: Nov. 15, 2021

Language: Английский

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Point‐Defect Engineering: Leveraging Imperfections in Graphitic Carbon Nitride (g‐C₃N₄) Photocatalysts toward Artificial Photosynthesis

Small, Journal Year: 2021, Volume and Issue: 17(48)

Published: April 28, 2021

Abstract Graphitic carbon nitride (g‐C 3 N 4 ) is a kind of ideal metal‐free photocatalysts for artificial photosynthesis. At present, pristine g‐C suffers from small specific surface area, poor light absorption at longer wavelengths, low charge migration rate, and high recombination rate photogenerated electron–hole pairs, which significantly limit its performance. Among myriad modification strategies, point‐defect engineering, namely tunable vacancies dopant introduction, capable harnessing the superb structural, textural, optical, electronic properties to acquire an ameliorated photocatalytic activity. In view burgeoning development in this pacey field, timely review on state‐of‐the‐art advancement engineering vital significance advance solar energy conversion. Particularly, insights into intriguing roles point defects, synthesis, characterizations, systematic control as well versatile application defective ‐based nanomaterials toward water splitting, dioxide reduction nitrogen fixation will be presented detail. Lastly, conclude with balanced perspective technical scientific hindrances future prospects. Overall, it envisioned that open new frontier uncover novel functionalities nanostructures catalysis.

Language: Английский

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Novel dual-effective Z-scheme heterojunction with g-C3N4, Ti3C2 MXene and black phosphorus for improving visible light-induced degradation of ciprofloxacin

Applied Catalysis B Environment and Energy, Journal Year: 2021, Volume and Issue: 291, P. 120105 - 120105

Published: March 5, 2021

Language: Английский

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