Photoinduced Hole Trapping in MoSe₂–MoS₂ Nanoflowers/ZnO Nanosheets S-Scheme Conduit for Ultrafast Charge Transfer during Hydrogen Evolution

ACS Applied Energy Materials, Journal Year: 2024, Volume and Issue: 7(7), P. 2881 - 2895

Published: March 28, 2024

Paving the way out of sustainable energy applications, one most captivating aspirations is development state-of-the-art catalytic systems for harnessing hydrogen energy. Here, a unique MoSe2–MoS2/ZnO heterojunction with S-scheme-type band alignment has been modeled to elucidate its ascendancy toward PC, EC, and PEC generation. Optimized 5 wt % (5MMZ) exhibited 5-fold superior PC H2 production efficiency than bare ZnO, 58.6% AQY ascribed augmented solar harvesting improved photophysical properties as confirmed by optoelectronic theoretical analysis. Femtosecond transient absorption studies were carried provide deeper insights into photoinduced charge carrier behavioral dynamics. It revealed that delayed recombination electron carriers at shallow deep trap sites holes was accountable higher activity 5MMZ heterostructure. XPS DFT ascertained great deal correlation between experimental achievements predictions discussed in reaction mechanism. To determine diversified scope heterojunctions green generation, photo/electrochemical water splitting operations also performed, which further reinforced versatility this kind metal oxide (ZnO)-bilayered material (MoSe2–MoS2)-type ternary heterostructures.

Language: Английский

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Hydrogen Energy as Sustainable Energy Resource for Carbon-Neutrality Realization

ACS Sustainable Resource Management, Journal Year: 2024, Volume and Issue: 1(4), P. 604 - 620

Published: April 4, 2024

For stepping toward a sustainable future, reducing carbon footprints by generation of clean source energy is viable option that captivates researchers all around the globe. Hydrogen in form renewable resource has achieved status and perceived as feasible alternative fossil derivative fuels ascribed to higher gravimetric density, which offers superior efficiency over conventional fuels. However, nature H2 synthetic route determinant for production. Traditional gray production generated via catalyzes global warming. Therefore, there need develop environmentally benign methodologies such green blue routes are discussed this review article comparing distinct methods with minimal emission, along their merits demerits. We have precisely optimization photocatalytic evolution optimizing cost catalytic system terms sustainability. Exploitation cheap noble metal free catalysts been stressed generating H2. The research domain underlines significance attaining carbon-neutral society respect economy its techno-economic analysis scalable applicability.

Language: 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, 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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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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Superlative Porous Organic Polymers for Photochemical and Electrochemical CO₂ Reduction Applications: From Synthesis to Functionality

Langmuir, Journal Year: 2024, Volume and Issue: 40(20), P. 10414 - 10432

Published: May 10, 2024

To mimic the carbon cycle at a kinetically rapid pace, sustainable conversion of omnipresent CO

Language: Английский

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MBenes for Energy Conversion: Advances, Bottlenecks, and Prospects

Langmuir, Journal Year: 2024, Volume and Issue: 40(21), P. 10835 - 10846

Published: May 13, 2024

The advent of two-dimensional layered materials has bolstered the development catalytic endeavors for energy conversion and storage. MXenes (transition metal carbides/nitrides) have already consolidated their candidature in past decade due to enhanced compositional structural tunabilities through surface modifications. Perseverant research engineering MXene based led inception MBenes borides) as promising systems energy-driven operations. Physicochemical superiorities such escalated conductivity hydrophilicity, unique geometrical domains, higher stability modulus elasticity provide reaction-friendly milieu exploit these materials. Nevertheless, on is embryonic requires thorough realization scientific significance. Herein, we aim discuss advancements, challenges, outlooks with respect HER, CO2RR, NRR applications.

Language: Английский

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(Deep) eutectic solvents for the separation of platinum group metals and rare earth elements: characteristics, extraction mechanisms and state of the art

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 159497 - 159497

Published: Jan. 1, 2025

Language: Английский

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High performance NaNbO3/CdS/Bi2S3 ternary heterostructured photoelectrocatalysts for efficient OER activity

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 64, P. 290 - 300

Published: March 27, 2024

Language: Английский

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Environmental remediation through tandem hydrogenolysis of polyethylene and H2 evolution over butterfly shaped MoO3@RuO2 heterostructures

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 77, P. 1163 - 1175

Published: June 22, 2024

Language: Английский

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Enhanced charge separation via ZnIn2S4@S-doped-C3N4 S-scheme heterojunction for efficient photocatalytic water splitting under visible light

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 68, P. 149 - 158

Published: April 25, 2024

Language: Английский

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