General Modification Strategy on Amorphous Materials to Boost Catalytic Performance

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(44)

Published: May 21, 2024

Abstract Amorphous materials with a high number of unsaturated coordinated dangling bonds exhibits macroscopic homogeneity and isotropy, making it easily modifiable to improve the catalytic properties. At present, several feasible modification strategies for amorphous have been proposed applied multiple fields. This review aims provide comprehensive overview recent research advancements in catalysis. First, general modifying are summarized. Subsequently, potential applications modified electrocatalysis photocatalysis highlighted. Additionally, positive effects various tools on properties elucidated. Finally, summary challenges offer critical perspective further development presented. The primary goal this is systematic understanding how enhance performance stimulate catalysts future.

Language: Английский

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Balancing Carrier Dynamics in Oxygen‐Vacancy‐Tuned Amorphous Ga₂O₃ Thin‐Film Self‐Powered Photoelectrochemical‐Type Solar‐Blind Photodetector Arrays for Underwater Imaging

Advanced Science, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 30, 2024

Abstract Underwater imaging technology plays a pivotal role in marine exploration and reconnaissance, necessitating photodetectors (PDs) with high responsivity, fast response speed, low preparation costs. This study presents the synergistic optimization of responsivity speed self‐powered photoelectrochemical (PEC)‐type photodetector arrays based on oxygen‐vacancy‐tuned amorphous gallium oxide (a‐Ga 2 O 3 ) thin films, specifically designed for solar‐blind underwater detection. Utilizing low‐cost one‐step sputtering process controlled oxygen flow, a‐Ga films varying vacancy (V concentrations are fabricated. By balancing trade‐offs among electrocatalytic reactions, charge transfer, carrier recombination, trapping, both ‐based PEC‐PDs simultaneously improved. Consequently, optimized demonstrated exceptional performance, achieving 33.75 mA W −1 times 12.8 ms (rise) 31.3 (decay), outperforming vast majority similar devices. Furthermore, pronounced positive correlation between anomalous transient photocurrent spikes concentration V defects is observed, offering compelling evidence ‐mediated indirect recombination. Finally, proof‐of‐concept system, utilizing an array PEC‐PDs, clear capabilities seawater. work provides valuable insight into potential developing cost‐effective, high‐performance thin‐film‐based advanced technology.

Language: Английский

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Solar-driven photoelectrochemical conversion of biomass: recent progress, mechanistic insights and potential scalability

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(20), P. 7459 - 7511

Published: Jan. 1, 2024

This review provides a comprehensive overview on the mechanism of photoelectrochemical biomass conversion and highlights extension dual-function cells for valorization paired with more valuable half-reactions.

Language: Английский

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Photocatalytic and Electrochemical Synthesis of Biofuel via Efficient Valorization of Biomass

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Abstract The excessive use of fossil fuels has significantly increased environmental stress, driving the need for green, sustainable biofuel alternatives. Innovations in photocatalysis (PC), electrocatalysis (EC), and their synergistic approaches, like photothermal catalysis (PTC), photo‐enzymatic (PENC), photoelectrocatalysis (PEC), offer advanced methods biomass conversion into biofuels, surpassing traditional limitations. However, comprehensive research on these processes is still lacking. This review aims to systematically analyze recent progress catalytic strategies biomass‐to‐biofuel conversion. It first describes characteristics, types, properties biofuels. Then, it explores fundamental mechanisms PC, EC, combined technologies. chemical pathways involved conversion—such as transesterification, esterification, hydrogenation, decarboxylation, bond cleavage, cyclization—are examined. Efficient catalyst design specific reactions factors influencing efficiency rates are also discussed. Additionally, this paper assesses impact economic benefits green technology production, offering a valuable reference energy application. addresses challenges deployment production suggests future directions, aiming provide scientific guidance technical support development vital field. In summary, underscores importance continued innovation promote solutions.

Language: Английский

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Cobalt Phosphide‐Supported Single‐Atom Pt Catalysts for Efficient and Stable Hydrogen Generation from Ammonia Borane Hydrolysis

Small Methods, Journal Year: 2024, Volume and Issue: unknown

Published: May 27, 2024

Abstract Ammonia borane (AB) has emerged as a promising chemical hydrogen storage material. The development of efficient, stable, and cost‐effective catalysts for AB hydrolysis is the key to achieving energy economy. Here, cobalt phosphide (CoP) used anchor single‐atom Pt species, acting robust generation from hydrolysis. Thanks high utilization synergy between CoP optimized Pt/CoP‐100 catalyst exhibits an unprecedented rate, giving record turnover frequency (TOF) value 39911 number 2926829 at room temperature. These metrics surpass those all existing state‐of‐the‐art supported metal by order magnitude. Density functional theory calculations reveal that integration onto substrate significantly enhances adsorption dissociation processes both water molecules, thereby facilitating production Interestingly, TOF further elevated 54878 under UV–vis light irradiation, which can be attributed efficient separation mobility photogenerated carriers Pt‐CoP interface. findings underscore effectiveness support metals in production, offering insights designing high‐performance storage.

Language: Английский

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Modulating Surface Oxygen Valence States via Interfacial Potential in BiVO₄/CoO_x/Au Photoanode for Enhanced Selective Photoelectrochemical Oxidation of Glycerol to Dihydroxyacetone

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: July 31, 2024

Abstract The concept of photoelectrochemical conversion biomass into industrially valuable chemicals presents a compelling strategy to supplant the lower‐value oxygen evolution typically associated with photoanodes. Here, surface potential manipulation method by regulating valence states is put forward, which demonstrated be effective in enhancing selective oxidation glycerol dihydroxyacetone (DHA). This involves concurrent establishment BiVO 4 /CoO x heterojunction and /Au Schottky junction, aiming fine‐tune photoanode's improve both its charge carrier separation interfacial transfer kinetics. photoanode exhibits photocurrent density 6.15 mA cm −2 at 1.23 V versus reversible hydrogen electrode (RHE). Meanwhile, efficiency achieves DHA rate 339.74 mmol m h −1 selectivity exceeding 60%. Experiments theoretical analysis underscore pivotal role played mediating adsorption desorption processes. Additionally, diminished attributed CoO Au amendments responsible for decreased Gibbs free energy dehydrogenation's rate‐limiting step involving intermediate carbon species. work demonstrates design catalysts modulating molecular adsorption/desorption regulation.

Language: Английский

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Homojunction for biomass photorefinery

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 498, P. 155180 - 155180

Published: Aug. 28, 2024

Language: Английский

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Descriptor for electro-oxidation of glycerol with high-efficiency bifunctional Cu-N single atom catalyst and coupled with hydrogen evolution/carbon dioxide reduction

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 685, P. 186 - 195

Published: Jan. 19, 2025

Language: Английский

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Recent progress in single atom catalysts for biomass conversion

Microstructures, Journal Year: 2025, Volume and Issue: 5(1)

Published: Feb. 17, 2025

Biomass, as an emerging environmental and renewable resource derived from various green sources, is increasingly being recognized for its inherent structural characteristics that are conducive to the production of high-value chemicals. The complicated structure oxygen-rich nature biomass derivatives necessitate targeted conversion, typically involving liquid-phase hydrogenation or addition acidic basic environments. These processes impose stringent requirements on efficiency durability catalysts. Recently, innovation single atom catalysts (SACs) with individual catalytic sites dispersed supports has demonstrated high good selectivity. Owing their atomic utilization cost-efficiency, SACs have emerged one most promising heterogeneous This review summarizes current progress conversion mediated by SACs. Significant emphasis placed unique active reaction mechanisms in kinds methods (thermocatalysis, electrocatalysis, photocatalysis). In order facilitate comparison, reactions categorized according type raw material (cellulose, hemicellulose, lignin, etc. ). Especially, developing strategies preparing summarized better satisfy industrial requirements. Finally, we provide anticipatory outlook future developments this field, focusing advanced systems.

Language: Английский

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Oxygen Vacancy Engineering on Pt/WO_x/Nb₂O₅ Catalysts toward Efficient 1,3-Propanediol Production from Glycerol Hydrogenolysis

ACS Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 5142 - 5154

Published: March 12, 2025

Language: Английский

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