Boron-doped nitrogen-deficient carbon nitride-based Z-scheme heterostructures for photocatalytic overall water splitting

Nature Energy, Год журнала: 2021, Номер 6(4), С. 388 - 397

Опубликована: Март 22, 2021

Язык: Английский

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Photocatalytic hydrogen production using metal doped TiO2: A review of recent advances

Applied Catalysis B Environment and Energy, Год журнала: 2018, Номер 244, С. 1021 - 1064

Опубликована: Ноя. 28, 2018

Язык: Английский

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Synergy of Dopants and Defects in Graphitic Carbon Nitride with Exceptionally Modulated Band Structures for Efficient Photocatalytic Oxygen Evolution

Advanced Materials, Год журнала: 2019, Номер 31(43)

Опубликована: Сен. 13, 2019

Abstract Electronic structure greatly determines the band structures and charge carrier transport properties of semiconducting photocatalysts consequently their photocatalytic activities. Here, by simply calcining mixture graphitic carbon nitride (g‐C 3 N 4 ) sodium borohydride in an inert atmosphere, boron dopants nitrogen defects are simultaneously introduced into g‐C . The resultant boron‐doped nitrogen‐deficient exhibits excellent activity for oxygen evolution, with highest evolution rate reaching 561.2 µmol h −1 g , much higher than previously reported It is well evidenced that conduction valence positions substantially continuously tuned simultaneous introduction exceptionally modulated both effective optical absorption visible light increased driving force water oxidation. Moreover, engineered electronic creates abundant unsaturated sites induces strong interlayer C–N interaction, leading to efficient electron excitation accelerated transport. In present work, a facile approach successfully demonstrated engineer high‐performance which can provide informative principles design photocatalysis systems solar energy conversion.

Язык: Английский

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Formation of Hierarchical Co₉S₈@ZnIn₂S₄ Heterostructured Cages as an Efficient Photocatalyst for Hydrogen Evolution

Journal of the American Chemical Society, Год журнала: 2018, Номер 140(45), С. 15145 - 15148

Опубликована: Окт. 31, 2018

Here we demonstrate the delicate design and construction of hierarchical Co9S8@ZnIn2S4 heterostructured cages as an efficient photocatalyst for hydrogen evolution with visible light. Two photoactive sulfide semiconductors are rationally integrated into a hollow structure strongly coupled heterogeneous shells two-dimensional ultrathin subunits. The unique architecture can efficiently facilitate separation transfer light-induced charges, offer large surface area, expose rich active sites photocatalytic redox reactions. Owing to distinctive structural compositional benefits, heterostructures without using any cocatalysts show remarkable activity hydrogen-producing rate 6250 μmol h–1 g–1 high stability water splitting.

Язык: Английский

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2D Black Phosphorus–Based Biomedical Applications

Advanced Functional Materials, Год журнала: 2019, Номер 29(13)

Опубликована: Фев. 4, 2019

Abstract Black phosphorus (BP) has increasingly attracted scientific attention since its first applications in biomedicine due to unique properties and excellent biocompatibility. In particular, layer‐dependent bandgap, moderate carrier mobility, large surface‐area‐to‐volume ratio, biodegradability, intrinsic photoacoustic properties, biocompatibility make it an ideal candidate for use photothermal therapy, photodynamic drug delivery, 3D printing, bioimaging, biosensing, theranostics, which are reviewed here. addition, the article discusses strategies overcome challenges related surface instability chemical degradation, a major obstacle application. This review not only provides comprehensive summary on BP preparation biomedical but also summarizes recent research future possibilities.

Язык: Английский

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Amino‐Assisted Anchoring of CsPbBr₃ Perovskite Quantum Dots on Porous g‐C₃N₄ for Enhanced Photocatalytic CO₂ Reduction

Angewandte Chemie International Edition, Год журнала: 2018, Номер 57(41), С. 13570 - 13574

Опубликована: Авг. 30, 2018

Abstract Halide perovskite quantum dots (QDs) have great potential in photocatalytic applications if their low charge transportation efficiency and chemical instability can be overcome. To circumvent these obstacles, we anchored CsPbBr 3 QDs (CPB) on NH x ‐rich porous g‐C N 4 nanosheets (PCN) to construct the composite photocatalysts via N−Br bonding. The 20 CPB‐PCN (20 wt % of QDs) photocatalyst exhibits good stability an outstanding yield 149 μmol h −1 g acetonitrile/water for reduction CO 2 under visible light irradiation, which is around 15 times higher than that QDs. This study opens up new possibilities using halide application.

Язык: Английский

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Z‐Scheme 2D/2D Heterojunction of Black Phosphorus/Monolayer Bi₂WO₆ Nanosheets with Enhanced Photocatalytic Activities

Angewandte Chemie International Edition, Год журнала: 2019, Номер 58(7), С. 2073 - 2077

Опубликована: Янв. 2, 2019

Black phosphorus (BP), a star-shaped two-dimensional material, has attracted considerable attention owing to its unique chemical and physical properties. BP shows great potential in photocatalysis area because of excellent optical properties; however, applications this field have been limited date. Now, Z-scheme heterojunction 2D/2D BP/monolayer Bi2 WO6 (MBWO) is fabricated by simple effective method. The BP/MBWO exhibits enhanced photocatalytic performance water splitting produce H2 NO removal purify air; the highest evolution rate 21042 μmol g-1 , 9.15 times that pristine MBWO ratio was as high 67 %. A mechanism proposed based on monitoring . O2- OH, NO2 NO3- species reaction. This work broadens highlights promise treatment environmental pollution renewable energy issues.

Язык: Английский

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Recent advances in noble metal free doped graphitic carbon nitride based nanohybrids for photocatalysis of organic contaminants in water: A review

Applied Materials Today, Год журнала: 2019, Номер 15, С. 494 - 524

Опубликована: Апрель 15, 2019

Язык: Английский

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Two-dimensional materials in semiconductor photoelectrocatalytic systems for water splitting

Energy & Environmental Science, Год журнала: 2018, Номер 12(1), С. 59 - 95

Опубликована: Окт. 10, 2018

Hydrogen production via solar water splitting can be enhanced by combining semiconductors with various 2-dimensional materials.

Язык: Английский

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Synergy between van der waals heterojunction and vacancy in ZnIn2S4/g-C3N4 2D/2D photocatalysts for enhanced photocatalytic hydrogen evolution

Applied Catalysis B Environment and Energy, Год журнала: 2020, Номер 277, С. 119254 - 119254

Опубликована: Июнь 20, 2020

Язык: Английский

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