Synergistic vacancy defects and the surface hydrophobic-to-superhydrophilic wetting engineering in W/S co-doped BiOI for enhanced photocatalytic hydrogen evolution

Chemical Engineering Journal, Год журнала: 2024, Номер 496, С. 154282 - 154282

Опубликована: Июль 25, 2024

Язык: Английский

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Iso‐Elemental ZnIn₂S₄/Zn₃In₂S₆ Heterojunction with Low Contact Energy Barrier Boosts Artificial Photosynthesis of Hydrogen Peroxide

Advanced Energy Materials, Год журнала: 2024, Номер unknown

Опубликована: Июнь 27, 2024

Abstract Artificial photosynthesis emerges as a strategic pathway to produce hydrogen peroxide (H 2 O ), an environmentally benign oxidant and clean energy carrier. Nonetheless, in many heterojunction‐based artificial photosynthetic systems, the H productivity is significantly hindered by poor carrier transport, narrow spectral light absorption, lack of adequate active sites for two‐electron oxygen reduction reaction. Herein, catalyst architecture with iso‐elemental heterojunction formed interfacing Zn 3 In S 6 nano‐flowers ZnIn 4 nanosheets proposed. This exhibits production rate high 23.47 µmol g −1 min under UV–vis irradiation, which attributed minimized contact barrier enhanced lattice match at /Zn interface thanks aids efficient separation transfer photogenerated carriers. Theoretical simulations alongside comprehensive in‐situ ex‐situ characterizations confirm photo‐redox generation effective dynamics across surface. Moreover, substituting one reduction‐type other non‐iso‐elemental catalysts like CdIn , TiO CdS further confirms feasibility superiority proposed configuration. work offers new perspective on designing .

Язык: Английский

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In-situ growth of MIL-53 (Fe) on charcoal sponge as a highly efficient and recyclable photocatalyst for removal of Cr(VI)

Rare Metals, Год журнала: 2024, Номер 43(9), С. 4344 - 4355

Опубликована: Май 29, 2024

Язык: Английский

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Coexisting single-atomic Fe and Fe2O3 on nitrogen-deficient g-C3N4 with enriched Fenton-like oxidation and photocatalytic performances for tetracycline degradation: DFT calculation, degradation mechanism and toxicity evaluation

Separation and Purification Technology, Год журнала: 2024, Номер 350, С. 127879 - 127879

Опубликована: Май 8, 2024

Язык: Английский

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Bi Quantum Dots Supported on BiOBr Nanoparticles and Loaded on Porous ZnO as a Photocatalyst for Dye Degradation and H₂ Production

ACS Applied Nano Materials, Год журнала: 2024, Номер 7(8), С. 8716 - 8729

Опубликована: Апрель 12, 2024

Synergetic photocatalytic H2 production by organic dye photodegradation is always a goal. However, the related research has been hindered due to uncontrollability of this process. This study prepares ZnO/Bi-QDs/BiOBr photocatalyst, and hole (h+) aggregation phase (ZnO) constructed into lamellar porous structure improve its adsorption capacity for dyes based on energy level composite. By method, reactive groups used are controlled h+ •OH, e– production, synergistic effect realized. Under action photocatalyst visible light, rhodamine B (RhB) completely degraded in 8 min, time can be reduced 2 min when pH 5, it realize complete degradation RhB 120 under natural sunlight. The rate reaches 1678 μmol·g–1·h–1 (h+ scavenger) aqueous solution light. provides an effective method design idea photocatalysts with during dyes.

Язык: Английский

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One-step synthesis N, O co-doped ZnIn2S4 for efficient photocatalytic H2 production and Cr(VI) reduction

Journal of environmental chemical engineering, Год журнала: 2024, Номер 12(4), С. 113261 - 113261

Опубликована: Июнь 5, 2024

Язык: Английский

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Modulating Yeager Adsorption Configuration of O₂ Through Cd Doping in Zn₃In₂S₆ for Photosynthesis of H₂O₂

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 14, 2024

Abstract The photocatalytic oxygen reduction reaction (ORR) is a key pathway for producing hydrogen peroxide (H 2 O ). While most previous studies have focused on the two‐step 2e − ORR process, one‐step two‐electron route offers thermodynamic and kinetic advantages that can significantly enhance activity selectivity. In this study, photocatalyst design reported by incorporating cadmium into vacancy‐rich Zn 3 S 6 (Cd‐S V /ZIS). This catalyst enables H production via process without use of sacrificial agents, achieving high yield 39.42 µmol g −1 min under UV–vis light irradiation, outperforming ZIS‐based photocatalysts. Theoretical simulations experimental results demonstrate Cd doping improves carrier kinetics catalyst, broadens its absorption range, promotes Yeager adsorption configuration , leading to highly active selective generation. study provides insights efficient photocatalysts production.

Язык: Английский

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General Synthesis of Metal Indium Sulfide Atomic Layers for Photocatalysis

Small, Год журнала: 2024, Номер unknown

Опубликована: Май 19, 2024

The metal indium sulfides have attracted extensive research interest in photocatalysis due to regulable atomic configuration and excellent optoelectronic properties. However, the synthesis of sulfide layers is still challenging since intrinsic non-van-der-Waals layered structures some components. Here, a surfactant self-assembly growth mechanism proposed controllably synthesize layers. Eleven types with tunable compositions, thickness, defect concentrations are successfully achieved namely In

Язык: Английский

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Amorphizing MnIn₂S₄ Atomic Layers Create an Asymmetrical InO₁S₅ Polarization Plane for Photocatalytic Ammonia Synthesis and CO₂ Reduction

ACS Nano, Год журнала: 2024, Номер 18(32), С. 21585 - 21592

Опубликована: Авг. 5, 2024

Building a polarization center is an effective avenue to boost charge separation and molecular activation in photocatalysis. However, limited number of centers are usually created. Here, plane based on two-dimensional (2D) atomic layers designed maximize the surface centers. The Mn 2D crystal lattice etched from MnIn2S4 build consecutive symmetry-breaking structure isolated InO1S5 sites. More charges aggregate around O, making sites highly polarized. Due formation plane, enormous polarized electric field formed perpendicular carrier lifetime can be prolonged 93.2 ps 1130 amorphous MnxIn2Sy. Meantime, large density gradient favors coupling small molecules. Benefiting these features, good NH3 photosynthesis performance (515.8 μmol g–1 h–1) realized over MnxIn2Sy, roughly 2.5 48.9 times higher than those bulk MnIn2S4, respectively. apparent quantum yields reach 5.4 3.3% at 380 400 nm, Meanwhile, greatly improved CO2 reduction activity also achieved This strategy provides accessible pathway for designing asymmetrical motivate photocatalysis optimization.

Язык: Английский

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Boosting Formate Production in Electrocatalytic CO₂ Reduction on Bimetallic Catalysts Enriched with In–Zn Interfaces

ACS Nano, Год журнала: 2024, Номер 18(52), С. 35749 - 35757

Опубликована: Дек. 18, 2024

We present an effective strategy for developing the dispersing strong-binding metal In on surface of weak-binding Zn, which modulates binding energy reaction intermediates and further facilitates efficient conversion CO2 to formate. The In-Zn interface (In-Zn2) benefits from formation active sites through favorable orbital interactions, leading a Faradaic efficiency 82.7% formate partial current density 12.39 mA cm-2, along with stable performance over 15 h at -1.0 V versus reversible hydrogen electrode. Both in situ Fourier transform infrared spectroscopy functional theory calculations show that bimetallic catalyst can deliver superior *OCHO intermediate, thereby fundamentally accelerating addition, exposed promotes capture activation molecules dynamics within significantly reduce barrier associated generation HCOO-, thus augmenting selectivity catalytic activity generation.

Язык: Английский

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