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

ACS Applied Energy Materials, Journal Year: 2024, Volume and Issue: 7(17), P. 7325 - 7337

Published: Aug. 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.

Language: Английский

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

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 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.

Language: Английский

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Rational integration of MoSe2 and BN with TiO2 to design nanoengineered ternary heterojunctions for sustainable hydrogen energy: Experimental evidences and theoretical anticipations

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 82, P. 1182 - 1195

Published: Aug. 7, 2024

Language: Английский

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CeO2/ZrO2 p-n heterojunction nanostructures for efficient NO2 gas sensing

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 1004, P. 175782 - 175782

Published: July 30, 2024

Language: Английский

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Ceria nanocatalyst-supported oxidative organic transformations of aromatic alcohols and p-nitrotoluene

Nanotechnology, Journal Year: 2024, Volume and Issue: 35(44), P. 445703 - 445703

Published: July 18, 2024

Abstract Hydrothermally derived nanocubes of CeO 2 (10 nm) were explored as an efficient heterogeneous catalyst in the partial oxidation aromatic alcohols to corresponding aldehydes and aerobic p -nitrotoluene -nitrobenzoic acid. The nanocatalyst was characterized by x-ray diffraction, transmission electron microscopy (TEM), energy dispersive spectroscopy, photoelectron Brunauer–Emmett–Teller (BET) surface area analysis, Fourier transform infrared thermal gravimetric analysis ultraviolet–visible spectroscopy. TEM/high-resolution TEM micrographs reveal a morphology mostly cubic nanostructures with exposed highly active {100} {110} facets. nanoceria determined BET found be 33.8 m g −1 . To demonstrate universality catalytic system, selective different substrates benzylic alcohol complete investigated under mild conditions. Absolute selectivity towards their respective 99.50% (benzaldehyde), 90.18% ( -chlorobenzaldehyde), 99.71% -nitrobenzaldehyde), 98.10% -fluorobenzaldehyde), 94.66% -anisaldehyde) 86.14% (cinnamaldehyde). Moreover, oxidative transformation nitrotoluene results 100% conversion 99.29% nitrobenzoic

Language: Английский

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Engrossing Structural Developments of Double Perovskites for Viable Energy Applications

Materials Today Catalysis, Journal Year: 2024, Volume and Issue: 7, P. 100067 - 100067

Published: Oct. 9, 2024

Language: Английский

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Physicochemical modulations in MXenes for carbon dioxide Mitigation and hydrogen Generation: Tandem Dialogue between theoretical anticipations and experimental evidences

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 679, P. 1046 - 1075

Published: Oct. 10, 2024

Language: Английский

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Efficient degradation of norfloxacin by ZnCo2O4/halloysite composite activating peroxymonosulfate: Performance and mechanism insights

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 72, P. 107669 - 107669

Published: April 1, 2025

Language: Английский

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One pot calcination method derived g-C3N4/Co3O4 composite for photocatalytic degradation of 4-nitrophenol

Journal of Molecular Structure, Journal Year: 2025, Volume and Issue: unknown, P. 142465 - 142465

Published: April 1, 2025

Language: Английский

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Enhanced Photo/Electrocatalytic Efficiency of Zn-Decorated TiO2 Nanostructures for Sustainable Hydrogen Evolution

Catalysis Today, Journal Year: 2024, Volume and Issue: unknown, P. 115103 - 115103

Published: Oct. 1, 2024

Language: Английский

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