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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Unlocking potential and challenges of MOFs and COFs based energy materials for CO2 reduction and H2 production

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 120, P. 146 - 180

Published: March 27, 2025

Language: Английский

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Flatland materials for photochemical and electrochemical nitrogen fixation applications: from lab-door experiments to large-scale applicability

Sustainable Energy & Fuels, Journal Year: 2024, Volume and Issue: 8(16), P. 3476 - 3495

Published: Jan. 1, 2024

Flatland materials were meticulously surveyed to explore their functionality in photochemical and electrochemical nitrogen reduction reaction applications. New insights are presented for pilot-scale NRR operations via 2D materials.

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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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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MBenes: Powering the future of energy storage and electrocatalysis

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 100, P. 113310 - 113310

Published: Sept. 11, 2024

Language: Английский

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Heterogeneous nanoporous organic frameworks-based catalysts for electrochemical CO₂ reduction reaction

Energy Materials, Journal Year: 2025, Volume and Issue: 5(6)

Published: Feb. 24, 2025

Converting captured carbon dioxide (CO2) into valuable chemicals and fuels through electrocatalysis realizing the anthropogenic closed-carbon cycle can provide new solutions to environmental energy problems. Nanoporous organic frameworks, including metal-organic frameworks (MOFs) porous polymers (POPs), as a class of potential electrocatalysts, have made great progress in CO2 reduction reaction due their high porosity, large specific surface area, structural/functionalization diversity. In this review, recent developments pristine MOFs/POPs, MOFs/POPs composite, MOFs-/POPs-derived catalysts are discussed from aspects catalyst design, synthesis strategy, test techniques, performance validation, active sites, basic mechanism. We further summarize challenges prospects MOFs/POPs-based materials practical applications for reactions point out paths future research. This review comprehensive reference advanced design systematic cognition efficient nanoporous framework electrocatalytic reduction.

Language: Английский

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Poly‐Phosphamide Catalyzed Visible‐Light‐Driven CH₄ and Dark‐Phase‐Mediated Cyclic Carbonate Productions Utilizing CO₂

Small, Journal Year: 2025, Volume and Issue: unknown

Published: April 10, 2025

Abstract A poly‐phosphamide (POP) with a band gap of 2.8 eV is used for the photochemical conversion CO 2 into CH 4 and chemical organo‐epoxides cyclic carbonates. The Tauc plot Mott Schottky analyses indicate conduction potential at −1.49 V (vs NHE), much more negative than multi‐electron reduction lifetime photo‐excited electron found ns. On photoirradiation 420 nm light, POP in presence triethanolamine or ascorbic acid can selectively convert (≈99%) yield 4.6 mmol g −1 . visible‐light irradiation, drop charge‐transfer resistance (R ct ) an enhancement cathodic current further confirm photon‐harvesting efficiency POP. In situ, FTIR study identifies adsorption to possible reaction intermediate, like *‐CO, *‐CH OH. also behaves as catalyst carbonates under solvent‐free conditions 98% yield. After light‐phase dark‐phase reactions, be successfully recycled least five times without structural degradation. Herein, acts bi‐functional, recyclable polymeric organic material essential feedstocks mild conditions.

Language: Английский

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Organic Thermally Activated Delayed Fluorescence (TADF) Compound as The Photosensitizer in CO₂ Photoreduction: Taking 4CzIPN as An Example

Asian Journal of Organic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 25, 2025

Abstract Over the past decades, excessive CO₂ emissions have caused severe environmental problems, primarily global warming and climate change. To address these challenges, researchers developed photocatalytic approaches to convert into high‐value‐added chemicals. The development of efficient, green, cost‐effective reduction systems represents a crucial step toward sustainable energy solutions. However, replacing noble metal‐based photosensitizers, which are widely used in reduction, with more alternatives remains challenging. Thermally activated delayed fluorescence (TADF) compounds emerged as promising organic offering high quantum efficiency, long lifetimes, wide redox window. Notably, 1,2,3,5‐Tetrakis(carbazol‐9‐yl)‐4,6‐dicyanobenzene (4CzIPN), prototypical TADF compound, has demonstrated exceptional performance various systems. This review systematically summarizes recent advances TADF‐based particularly 4CzIPN, for while elucidating their underlying reaction mechanisms.

Language: Английский

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