Solar-driven methanogenesis with ultrahigh selectivity by turning down H2 production at biotic-abiotic interface

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

Published: Nov. 3, 2022

Integration of methanogens with semiconductors is an effective approach to sustainable solar-driven methanogenesis. However, the H2 production rate by largely exceeds that methanogen metabolism, resulting in abundant as side product. Here, we report binary metallic active sites (namely, NiCu alloys) are incorporated into interface between CdS and Methanosarcina barkeri. The self-assembled barkeri-NiCu@CdS exhibits nearly 100% CH4 selectivity a quantum yield 12.41 ± 0.16% under light illumination, which not only reported biotic-abiotic hybrid systems but also superior most photocatalytic systems. Further investigation reveal Ni-Cu-Cu hollow alloys can directly supply hydrogen atoms electrons through photocatalysis barkeri for methanogenesis via both extracellular intracellular cycles, effectively turning down production. This work provides important insights interface, offers avenue engineering process.

Language: Английский

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Sustainable Conversion of Microplastics to Methane with Ultrahigh Selectivity by a Biotic–Abiotic Hybrid Photocatalytic System

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(52)

Published: Nov. 2, 2022

Abstract Efficient conversion of microplastics into fuels provides a promising strategy to alleviate environmental pollution and the energy crisis. However, conventional processes are challenged by low product selectivity potential secondary pollution. Herein, biotic‐abiotic photocatalytic system is designed assembling Methanosarcina barkeri ( M. b ) carbon dot‐functionalized polymeric nitrides (CDPCN), which biodegradable microplastics—poly(lactic acid) after heat pretreatment can be converted CH 4 for five successive 24‐day cycles with nearly 100 % assistance additional CO 2 . Mechanistic analyses showed that both photooxidation photoreduction methanogenesis worked simultaneously via fully utilizing photogenerated holes electrons without chemical sacrificial quenchers. Further research validated real‐world applicability ‐CDPCN non‐biodegradable microplastic‐to‐CH conversion, offering new avenue engineering plastic reuse.

Language: Английский

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Solar driven photocatalytic disinfection by Z-scheme heterojunction of In2O3/g-C3N4: Performance, mechanism and application

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 340, P. 123235 - 123235

Published: Aug. 28, 2023

Language: Английский

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Revisiting Solar Energy Flow in Nanomaterial-Microorganism Hybrid Systems

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(15), P. 9081 - 9112

Published: June 20, 2024

Nanomaterial-microorganism hybrid systems (NMHSs), integrating semiconductor nanomaterials with microorganisms, present a promising platform for broadband solar energy harvesting, high-efficiency carbon reduction, and sustainable chemical production. While studies underscore its potential in diverse solar-to-chemical conversions, prevailing NMHSs grapple suboptimal conversion efficiency. Such limitations stem predominantly from an insufficient systematic exploration of the mechanisms dictating flow. This review provides overview notable advancements this nascent field, particular focus on discussion three pivotal steps flow: capture, cross-membrane transport, into chemicals. key challenges faced each stage are independently identified discussed, viable solutions correspondingly postulated. In view interplay affecting overall efficiency conversion, subsequent discussions thus take integrative viewpoint to comprehend, analyze improve flow current different configurations, highlighting contemporary techniques that can be employed investigate various aspects within NMHSs. Finally, concluding section summarizes opportunities future research, providing roadmap continued development optimization

Language: Английский

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Electronic Interactions on Platinum/(Metal‐Oxide)‐Based Photocatalysts Boost Selective Photoreduction of CO₂ to CH₄

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(38)

Published: July 31, 2023

By supporting platinum (Pt) and cadmium sulfide (CdS) nanoparticles on indium oxide (In2 O3 ), we fabricated a CdS/Pt/In2 photocatalyst. Selective photoreduction of carbon dioxide (CO2 ) to methane (CH4 was achieved with electronic Pt-In2 interactions, CH4 selectivity reaching 100 %, which is higher than that without interactions (71.7 %). Moreover, the enhancement effect Pt-(metal-oxide) selective CO2 also occurs by using other common metal oxides, such as photocatalyst supports, including titanium oxide, gallium zinc tungsten oxide. The separate photogenerated electron-hole pairs convert into CO2δ- , can be easily hydrogenated via →HCOO*→HCO*→CH*→CH4 path, thus boosting . This offers new way achieve

Language: Английский

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Independent and synergistic bio-reductions of uranium (VI) driven by zerovalent iron in aquifer

Water Research, Journal Year: 2023, Volume and Issue: 233, P. 119778 - 119778

Published: Feb. 23, 2023

Language: Английский

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Capacitance catalysis: A new discovery in photocatalytic H2 production

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 106, P. 146 - 155

Published: Feb. 1, 2025

Language: Английский

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Unlocking interfacial electron transfer in biophotoelectrochemical processes: Role of extracellular polymeric substances in aquatic environments

Water Research, Journal Year: 2025, Volume and Issue: 278, P. 123375 - 123375

Published: Feb. 23, 2025

Language: Английский

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Reactive oxygen species accelerate humification process during iron mineral-amended sludge composting

Bioresource Technology, Journal Year: 2022, Volume and Issue: 370, P. 128544 - 128544

Published: Dec. 27, 2022

Language: Английский

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Volatile fatty acid production in anaerobic fermentation of food waste saccharified residue: Effect of substrate concentration

Waste Management, Journal Year: 2023, Volume and Issue: 164, P. 29 - 36

Published: April 5, 2023

Language: Английский

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