Chemically bonded Mn0.5Cd0.5S/BiOBr S-scheme photocatalyst with rich oxygen vacancies for improved photocatalytic decontamination performance

Advanced Powder Materials, Journal Year: 2024, Volume and Issue: 3(3), P. 100183 - 100183

Published: Feb. 20, 2024

Devising exceptional S-scheme heterojunction photocatalysts utilized in annihilating pharmaceuticals and chromium contamination is significant for addressing the problem of global water pollution. In this work, a chemically bonded Mn0.5Cd0.5S/BiOBr heterostructure with oxygen vacancies ingeniously developed through facile in-situ solvothermal synthesis. The designed exhibits eminently reinforced photo-activity destruction tetracycline hydrochloride Cr (VI) as compared its individual components. This substantial photo-redox performance amelioration benefitted from creation an intense internal electric field (IEF) via supplying powerful driving force migration highway by interfacial chemical bond to foster electron/hole disintegration. More intriguingly, IEF at hetero-interface drives fast consumption photo-induced holes Mn0.5Cd0.5S photoelectrons BiOBr, profoundly boosting enrichment active photo-carriers sparing photo-corrosion Mn0.5Cd0.5S. Furthermore, anti-interference property can work efficiently real matrices. Multiple uses recycled Mn0·5Cd0·5S/BiOBr evidence prominent robustness stability. achievement indicates vast potential photosystems structural defects design photo-responsive materials effective wastewater treatment.

Language: Английский

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Tailor‐Engineered 2D Cocatalysts: Harnessing Electron–Hole Redox Center of 2D g‐C₃N₄ Photocatalysts toward Solar‐to‐Chemical Conversion and Environmental Purification

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 32(29)

Published: Feb. 23, 2022

Abstract Sparked by natural photosynthesis, solar photocatalysis using metal‐free graphitic carbon nitride (g‐C 3 N 4 ) with appealing electronic structure has turned up as the most captivating technique to quest for sustainable energy generation and pollution‐free environment. Nonetheless, low‐dimensional g‐C is thwarted from sluggish kinetics rapid recombination of photogenerated carriers upon light irradiation. Among multifarious modification strategies, engineering 2D cocatalysts anticipated accelerate redox kinetics, augment active sites ameliorate electron–hole separation boosted activity thanks its face‐to‐face contact surface. It timely technological significance review 2D/2D interfaces state‐of‐the‐art cocatalysts, spanning carbon‐containing phosphorus‐containing, metal dichalcogenide, other cocatalysts. Fundamental principles each photocatalytic application will be introduced. Thereafter, recent advances cocatalyst‐mediated systems critically evaluated based on their interfacial engineering, emerging roles, impacts toward stability catalytic efficiency. Importantly, mechanistic insights into charge dynamics structure–performance relationship deciphered. Last, noteworthy research directions are prospected deliver insightful ideas future development . Overall, this serve a scaffold cornerstone in designing dimensionality‐dependent cocatalyst‐assisted renewable ecologically green

Language: Английский

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Recent advancement and future challenges of photothermal catalysis for VOCs elimination: From catalyst design to applications

Green Energy & Environment, Journal Year: 2022, Volume and Issue: 8(3), P. 654 - 672

Published: Feb. 19, 2022

Photothermal catalysis realizes the synergistic effect of solar energy and thermochemistry, which also has potential to improve reaction rate optimize selectivity. In this review, research progress photothermal catalytic removal volatile organic compounds (VOCs) by nano-catalysts in recent years is systematically reviewed. First, fundamentals fabrication catalysts are described, design strategy optimizing performance proposed. Second, for VOC degradation with evaluated compared batch continuous systems. Particularly, mechanism oxidation introduced based on experimental theoretical study. Finally, future limitations challenges have been discussed, directions priorities highlighted. A broad view catalyst fabrication, applications, challenges, prospects can be systemically provided review.

Language: Английский

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Photo-thermo semi-hydrogenation of acetylene on Pd1/TiO2 single-atom catalyst

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: May 12, 2022

Abstract Semi-hydrogenation of acetylene in excess ethylene is a key industrial process for purification. Supported Pd catalysts have attracted most attention due to their superior intrinsic activity but often suffer from low selectivity. single-atom (SACs) are promising significantly improve the selectivity, needs be improved and feasible preparation SACs remains grand challenge. Here, we report simple strategy construct 1 /TiO 2 by selectively encapsulating co-existed small amount nanoclusters/nanoparticles based on different strong metal-support interaction (SMSI) occurrence conditions. In addition, photo-thermo catalysis has been applied this where much-improved catalytic was obtained. Detailed characterization combined with DFT calculation suggests that photo-induced electrons transferred TiO adjacent atoms facilitate activation acetylene. This work offers an opportunity develop highly stable efficient semi-hydrogenation process.

Language: Английский

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Subsurface oxygen defects electronically interacting with active sites on In2O3 for enhanced photothermocatalytic CO2 reduction

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: June 9, 2022

Abstract Oxygen defects play an important role in many catalytic reactions. Increasing surface oxygen can be done through reduction treatment. However, excessive blocks electron channels and deactivates the catalyst due to electron-trapped effects by subsurface defects. How effectively extract electrons from which cannot directly interact with reactants is challenging remains elusive. Here, we report a metallic In-embedded In 2 O 3 nanoflake over turnover frequency of CO into increases factor 866 (7615 h −1 ) 376 (2990 at same light intensity reaction temperature, respectively, compared . Under electron-delocalization effect O-In-(O)V o -In-In structural units interface, are extracted gather active sites. This improves electronic coupling stabilizes intermediate. The study opens up new insights for exquisite manipulation

Language: Английский

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Photo-thermal synergy for boosting photo-Fenton activity with rGO-ZnFe2O4: Novel photo-activation process and mechanism toward environment remediation

Applied Catalysis B Environment and Energy, Journal Year: 2021, Volume and Issue: 292, P. 120198 - 120198

Published: April 2, 2021

Language: Английский

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Nanostructured Materials for Photothermal Carbon Dioxide Hydrogenation: Regulating Solar Utilization and Catalytic Performance

ACS Nano, Journal Year: 2023, Volume and Issue: 17(3), P. 1725 - 1738

Published: Feb. 3, 2023

Converting carbon dioxide (CO2) into value-added fuels or chemicals through photothermal catalytic CO2 hydrogenation is a promising approach to alleviate the energy shortage and global warming. Understanding nanostructured material strategies in process vital for designing devices catalysts maximizing performance. In this Perspective, we first describe several essential nanomaterial design concepts enhance sunlight absorption utilization hydrogenation. Subsequently, review latest progress C1 (e.g., CO, CH4, CH3OH) multicarbon hydrocarbon (C2+) products. Finally, relevant challenges opportunities exciting research realm are discussed. This perspective provides comprehensive understanding light–heat synergy over nanomaterials instruction rational catalyst utilization.

Language: Английский

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Recent developments in photothermal reactors with understanding on the role of light/heat for CO2 hydrogenation to fuels: A review

Chemical Engineering Journal, Journal Year: 2021, Volume and Issue: 427, P. 131617 - 131617

Published: Aug. 11, 2021

Language: Английский

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Photothermal technique-enabled ambient production of microalgae biodiesel: Mechanism and life cycle assessment

Bioresource Technology, Journal Year: 2022, Volume and Issue: 369, P. 128390 - 128390

Published: Nov. 23, 2022

Language: Английский

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Thermoplasmonics in Solar Energy Conversion: Materials, Nanostructured Designs, and Applications

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(26)

Published: March 10, 2022

Abstract The indispensable requirement for sustainable development of human society has forced almost all countries to seek highly efficient and cost‐effective ways harvest convert solar energy. Though continuous progress advanced, it remains a daunting challenge achieve full‐spectrum absorption maximize the conversion efficiency sunlight. Recently, thermoplasmonics emerged as promising solution, which involves several beneficial effects including enhanced light scattering, generation relaxation hot carriers, well localized/collective heating, offering tremendous opportunities optimized energy conversion. Besides, these functionalities can be tailored via elaborated designs materials nanostructures. Here, first fundamental physics governing is presented then strategies both material selection nanostructured toward more are summarized. Based on this, recent in thermoplasmonic applications evaporation, photothermal chemistry, thermophotovoltaic reviewed. Finally, corresponding challenges prospects discussed.

Language: Английский

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