Ultrafast Hole Trapping in Te‐MoTe₂‐MoSe₂/ZnO S‐Scheme Heterojunctions for Photochemical and Photo‐/Electrochemical Hydrogen Production

Small, Год журнала: 2024, Номер unknown

Опубликована: Авг. 30, 2024

Abstract Te‐MoTe 2 ‐MoSe /ZnO S‐scheme heterojunctions are engineered to ascertain the advanced redox ability in sustainable HER operations. Photo‐physical studies have established steady state transfer of photo‐induced charge carriers whereas an improved dynamics realized by state‐of‐art ultrafast transient absorption and irradiated‐XPS analysis optimized 5wt% heterostructure. 2.5, 5, 7.5wt% photocatalysts (2.5MTMZ, 5MTMZ 7.5MTMZ) exhibited 2.8, 3.3, 3.1‐fold higher performance than pristine ZnO with marvelous apparent quantum efficiency 35.09%, 41.42% 38.79% at rate 4.45, 5.25, 4.92 mmol/g cat /h, respectively. Electrochemical water splitting experiments manifest subdued 583 566 mV overpotential values 2.5MTMZ heterostructures achieve 10 mA cm −2 current density for HER, 961 793 OER, For photocatalyst, lifetime kinetic decay interfacial step is evaluated be 138.67 ps as compared 52.92 bare ZnO.

Язык: Английский

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Ultrafast Charge Transfer Dynamics in Multifaceted Quaternary Te–MoTe₂–MoS₂/ZnO S-Scheme Heterostructured Nanocatalysts for Efficient Green Hydrogen Energy

ACS Applied Energy Materials, Год журнала: 2024, Номер 7(17), С. 7325 - 7337

Опубликована: Авг. 20, 2024

Sustainable H2 energy generation through water splitting prevalently demands systematically designed multifaceted state-of-the-art catalysts. Herein, unique Te–MoTe2–MoS2/ZnO heterostructured nanocatalysts were engineered hydrothermally for photo-/electro-/photoelectrochemical functionalities probed to ascertain the catalytic efficiency toward production. Optimized 2.5% (2.5TMMZ) heterojunctions performed at an applicable standard with a production rate of 5.2 (mmol/gcat)/h 41% AQY during photochemical experiments. Fs-TAS studies confirmed delayed lifetime active charge carriers shallow and deep trap sites in heterostructure. Electrochemical corroborated remarkable HER OER activities 2.5TMMZ −0.51 0.76 V overpotentials. Photoelectrochemical investigations deciphered potential as it yielded nearly 3-fold higher photocurrent density than ZnO. To achieve equilibrium between conductivity–stability system, Te/S edge Te–MoTe2–MoS2 exhibited affinity H+ adsorption, whereas ZnO end catalyst took care photosensitization demonstrated via optoelectronic theoretical characterizations alongside S-scheme mechanism.

Язык: Английский

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An efficient multifunctional SnS2/g-C3N4 hierarchical nanoflower catalyst for electrocatalytic and photocatalytic applications

Ceramics International, Год журнала: 2024, Номер 50(19), С. 36004 - 36017

Опубликована: Июль 2, 2024

Язык: Английский

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The mechanistic pathway of paracetamol degradation using UV/H2O2 with PVP functionalized ZnO Nanorods

Journal of Molecular Structure, Год журнала: 2024, Номер 1317, С. 139068 - 139068

Опубликована: Июнь 24, 2024

Язык: Английский

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Enhanced metronidazole degradation in water by a novel Cu0 integrated LaNiO3 nanorod and by-products toxicity evaluation

Journal of Water Process Engineering, Год журнала: 2025, Номер 71, С. 107113 - 107113

Опубликована: Фев. 5, 2025

Язык: Английский

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Effect of additives on the photocatalytic degradation of malachite green using NiS:Tb3+ nanoparticle and their photoluminescence properties

Journal of Molecular Structure, Год журнала: 2024, Номер 1320, С. 139748 - 139748

Опубликована: Авг. 23, 2024

Язык: Английский

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Dysprosium chromite nanoparticles: A promising photocatalyst for the remediation of ciprofloxacin and methylene blue from wastewater

Journal of Alloys and Compounds, Год журнала: 2024, Номер unknown, С. 177295 - 177295

Опубликована: Окт. 1, 2024

Язык: Английский

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Synthesis and characterisation of Ag-Cu-co-Doped WO3 @Carbeneous materials composites for waste water treatment

Desalination and Water Treatment, Год журнала: 2024, Номер 319, С. 100531 - 100531

Опубликована: Июнь 12, 2024

Nanoparticles of tungsten oxide are widely used in advanced chemical processes but the application (WO3) photocatalysis is limited. To increase their photocatalysis, nanostructured (W-1) co-doped with silver and copper (W-2), nanocomposites g-C3N4 (W-3) CNTs (W-4) synthesized. Structural, elemental, morphological analyses prepared samples were carried out using different characterization techniques like XRD, SEM, FTIR, EDX, Mott-Schottky. The bandgap WO3 2.75 eV which reduced to 2.32 by doping composite formation. degradation crystal violet chlorpyrifos done check photocatalytic performance materials under light bulb energy. Photodegradation experiment shows 83.33 % 41 CV respectively. higher ability shown composites because they have smaller crystallite size (12.81 nm) as compared other photocatalysts. In presence CNTs, rate recombination holes electrons decreases, resulting enhancement activity. research reveals that W-4 exhibits promising potential for applications photodegradation organic wastes.

Язык: Английский

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Bifunctional Zirconium Phosphate with Greigite for Electrochemical Detection and Simultaneous Removal of Heavy Metal Ions and Nitro Compounds

Langmuir, Год журнала: 2024, Номер 40(28), С. 14486 - 14503

Опубликована: Июль 6, 2024

Electrochemical sensing is emerging as a method of choice for the and monitoring contaminants in water. Various platforms have been designed heavy metal ions organic pollutants water bodies. Herein, we report new electrochemical platform that can be used detection both nitro-based The sensor uses modified electrode based on Fe

Язык: Английский

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Unveiling the synergistic potential of g-C3N4-MWCNT/In2O3 nanocomposite for enhanced organic pollutant degradation and cancer cell inhibition under visible light irradiation

Colloids and Surfaces A Physicochemical and Engineering Aspects, Год журнала: 2024, Номер 702, С. 135066 - 135066

Опубликована: Авг. 14, 2024

Язык: Английский

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