Efficient photocatalytic CO2 conversion over 2D/2D Ni-doped CsPbBr3/Bi3O4Br Z-scheme heterojunction: Critical role of Ni doping, boosted charge separation and mechanism study

Applied Catalysis B Environment and Energy, Journal Year: 2022, Volume and Issue: 319, P. 121895 - 121895

Published: Aug. 24, 2022

Language: Английский

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Solar utilization beyond photosynthesis

Nature Reviews Chemistry, Journal Year: 2022, Volume and Issue: 7(2), P. 91 - 105

Published: Dec. 19, 2022

Language: Английский

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Solar Energy Catalysis

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(29)

Published: April 26, 2022

When it comes to using solar energy promote catalytic reactions, photocatalysis technology is the first choice. However, sunlight can not only be directly converted into chemical through a photocatalytic process, also different energy-transfer pathways. Using as source, reactions proceed independently, and coupled with other technologies enhance overall efficiency. Therefore, sunlight-driven are diverse, need given specific definition. We propose timely perspective for driven by give them definition, namely "solar catalysis". The concept of types catalysis, such photocatalysis, photothermal cell powered electrocatalysis, pyroelectric highlighted. Finally, their limitations future research directions discussed.

Language: Английский

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Designing a Redox Heterojunction for Photocatalytic “Overall Nitrogen Fixation” under Mild Conditions

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(28)

Published: May 5, 2022

Ammonia and nitrates are the most fundamental significant raw ingredients in human society. Till now, industrial synthetic ammonia by Haber-Bosch process Ostwald have encountered increasingly serious challenges, i.e., high energy consumption, cost, environment-harmful gas emissions. Therefore, developing alternative approaches to achieve nitrogen fixation overcome inherent deficiencies of well-established processes has fascinated scientists for many years, especially simultaneous formation nitrate directly from N2 molecules, which been rarely studied. Herein, a heterojunction-based photocatalytic system is designed successfully "overall fixation," sustainable conversion molecules into products under mild conditions. In this heterojunction, interfacial charge redistribution (ICR) promotes selective accumulations photogenerated electrons holes CdS WO3 components. As result, can be activated reduced with yields 35.8 µmol h-1 g-1 multi-electron process, synchronously oxidized 14.2 hole-induced oxidation coupling process. This work provides novel insight promising approach realize artificial condition.

Language: Английский

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Constructing Direct Z‐Scheme Heterostructure by Enwrapping ZnIn₂S₄ on CdS Hollow Cube for Efficient Photocatalytic H₂ Generation

Advanced Science, Journal Year: 2022, Volume and Issue: 9(24)

Published: June 24, 2022

Rational design hybrid nanostructure photocatalysts with efficient charge separation and transfer, good solar light harvesting ability have critical significance for achieving high solar-to-chemical conversion efficiency. Here a highly active stable composite photocatalyst is reported by integrating ultrathin ZnIn2 S4 nanosheets on surface of hollow CdS cube to form the cube-in-cube structure. Experimental results combined density functional theory calculations confirm that Z-scheme /CdS heterojunction formed, which boosts transfer under local-electric-field at semiconductor/semiconductor interface, thus prolongs their lifetimes. Moreover, such structure affords enhanced light-harvesting property. The optimized nanohybrids exhibit superior H2 generation rate visible-light irradiation (λ ≥ 420 nm) excellent photochemical stability during 20 h continuous operation.

Language: Английский

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Stabilization and Performance Enhancement Strategies for Halide Perovskite Photocatalysts

Advanced Materials, Journal Year: 2022, Volume and Issue: 35(6)

Published: July 28, 2022

Abstract Solar‐energy‐powered photocatalytic fuel production and chemical synthesis are widely recognized as viable technological solutions for a sustainable energy future. However, the requirement of high‐performance photocatalysts is major bottleneck. Halide perovskites, category diversified semiconductor materials with suitable energy‐band‐enabled high‐light‐utilization efficiencies, exceptionally long charge‐carrier‐diffusion‐length‐facilitated charge transport, readily tailorable compositional, structural, morphological properties, have emerged new class efficient hydrogen evolution, CO 2 reduction, various organic reactions. Despite noticeable progress, development halide perovskite (HPPs) still hindered by several key challenges: strong ionic nature high hydrolysis tendency induce instability an unsatisfactory activity due to need coactive component realize redox processes. Herein, recently developed advanced strategies enhance stability HPPs comprehensively reviewed. The applicable enhancement first articulated, improvement then explored. Finally, challenges future perspectives associated application in fuels value‐added chemicals presented, indicating irreplaceable role field photocatalysis.

Language: Английский

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Engineering g-C3N4 based materials for advanced photocatalysis: Recent advances

Green Energy & Environment, Journal Year: 2022, Volume and Issue: 9(2), P. 166 - 197

Published: Dec. 13, 2022

Photocatalysis driven by abundant yet intermittent solar energy has considerable potential in renewable generation and environmental remediation. The outstanding electronic structure physicochemical properties of graphitic carbon nitride (g-C3N4), together with unique metal-free characteristic, make them ideal candidates for advanced photocatalysts construction. This review summarizes the up-to-date advances on g-C3N4 based from ingenious-design strategies diversified photocatalytic applications. Notably, advantages, fabrication methods limitations each design strategy are systemically analyzed. In order to deeply comprehend inner connection theory–structure–performance upon photocatalysts, structure/composition designs, corresponding activities reaction mechanisms jointly discussed, associated introducing their applications toward water splitting, dioxide/nitrogen reduction pollutants degradation, etc. Finally, current challenges future perspectives materials photocatalysis briefly proposed. These also instructive constructing other environment-related

Language: Английский

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Strategies of Anode Design for Seawater Electrolysis: Recent Development and Future Perspective

Small Science, Journal Year: 2022, Volume and Issue: 2(9)

Published: Aug. 16, 2022

Compared with freshwater splitting, seawater electrolysis has more spaces to be explored, which is primarily attributed the additional critical catalytic challenges of competition between anodic oxygen evolution reaction (OER) and chlorine chemistry, deep corrosion, site blocking due presence chloride ions insoluble particulate in seawater. However, if direct can realized, it would revolutionize energy environmental sectors. In this review, current effective strategies are summarized, including electronic modulation, vacancies creation, amorphous porous structure design, corrosion‐resistant passive layer decoration, creating strong catalyst–support interactions. The review also provides insights for on rational design OER catalyst high selectivity, activity, corrosion resistance, chemical, mechanical durability. Beyond progress made date, a perspective fabrication high‐performance anodes proposed. Collectively, will shed light viable anode massive sustainable hydrogen fuel production from immense

Language: Английский

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Detecting and Quantifying Wavelength‐Dependent Electrons Transfer in Heterostructure Catalyst via In Situ Irradiation XPS

Advanced Science, Journal Year: 2022, Volume and Issue: 10(4)

Published: Nov. 14, 2022

The identity of charge transfer process at the heterogeneous interface plays an important role in improving stability, activity, and selectivity heterojunction catalysts. And, situ irradiation X-ray photoelectron spectroscopy (XPS) coupled with UV light optical fiber measurement setup is developed to monitor observe between heterojunction. However, in-depth relationship binding energy wavelength missing based on fact that incident formed by coupling different wavelengths. Furthermore, a quantitative understanding numbers remains elusive. Herein, g-C3 N4 /SnO2 model catalyst, wavelength-dependent Boltzmann function describe changes through utilizing continuously adjustable monochromatic XPS technique established. Using this method, study further reveals electrons number can be readily calculated forming asymptotic model. This methodology provides blueprint for deep charge-transfer rules facilitates future development highly active advanced

Language: Английский

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Improved Plasmonic Hot-Electron Capture in Au Nanoparticle/Polymeric Carbon Nitride by Pt Single Atoms for Broad-Spectrum Photocatalytic H2 Evolution

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)

Published: May 20, 2023

Rationally designing broad-spectrum photocatalysts to harvest whole visible-light region photons and enhance solar energy conversion is a "holy grail" for researchers, but still challenging issue. Herein, based on the common polymeric carbon nitride (PCN), hybrid co-catalysts system comprising plasmonic Au nanoparticles (NPs) atomically dispersed Pt single atoms (PtSAs) with different functions was constructed address this challenge. For dual decorated PCN (PtSAs-Au2.5/PCN), photoexcited generate electrons under UV short-wavelength visible light, synergetic NPs PtSAs not only accelerate charge separation transfer though Schottky junctions metal-support bond also act as H2 evolution. Furthermore, absorb long-wavelength light owing its localized surface plasmon resonance, adjacent trap hot-electrons evolution via direct electron effect. Consequently, PtSAs-Au2.5/PCN exhibits excellent photocatalytic activity rate of 8.8 mmol g-1 h-1 at 420 nm 264 μmol 550 nm, much higher than that Au2.5/PCN PtSAs-PCN, respectively. This work provides new strategy design reaction.

Language: Английский

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