Single Atom Environmental Catalysis: Influence of Supports and Coordination Environments

Advanced Functional Materials, Год журнала: 2023, Номер 33(50)

Опубликована: Авг. 27, 2023

Abstract Single‐atom catalysts (SACs) are desirable in environmental catalysis due to friendliness, structural stability, and maximum utilization of active metal sites. Extensive research has compared the catalytic performance between SACs with different single‐atom metals. However, their is also highly dependent on supports, which play an important role modulating local coordination environment SACs. Unfortunately, a comprehensive review that systematically discusses relationship supports environment, as well combined effects scare. In this review, three widely investigated applications including advanced oxidation processes (AOPs), mainly Fenton Fenton‐like reactions, nitrate reduction reaction (NO 3 RR) focused. By correlating characterization results, performances, computational environments reactivity examined detail, from origin pathways AOPs NO RR attempted reveal. Finally look forward for potential opportunities challenges on‐demand applications, provided.

Язык: Английский

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Enlarging the Ni–O Bond Polarizability in a Phosphorene-Hosted Metal–Organic Framework for Boosted Water Oxidation Electrocatalysis

ACS Nano, Год журнала: 2023, Номер 17(17), С. 17254 - 17264

Опубликована: Авг. 31, 2023

The emerging lattice-oxygen oxidation mechanism (LOM) presents attractive opportunities for breaking the scaling relationship to boost oxygen evolution reaction (OER) with direct OLattice-*O interaction. However, currently LOM-triggering rationales are still debated, and a streamlined physicochemical paradigm is extremely desirable design of LOM-defined OER catalysts. Herein, Ni metal-organic framework/black phosphorene (NiMOF/BP) heterostructure theoretically profiled constructed as catalytic platform LOM-derived studies. It found that p-type BP host can enlarge Ni-O bond polarizability NiMOF through stretching valence declining synergically. Such an enlarged will in principle alleviate lattice confinement benefit LOM pathway performance. As result, optimized NiMOF/BP catalyst exhibits promising performance low overpotential 260 mV at 10 mA cm-2 long-term stability 1 M KOH electrolyte. Both experiment calculation results suggest activated more balanced step barrier catalyst. This research puts forward criterion LOM-scaled electrocatalysts water oxidation.

Язык: Английский

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S-scheme heterojunction Cu2V2O7/α-Fe2O3 nanosheets with effective photocatalytic activity toward organic pollutant degradation

Nano Energy, Год журнала: 2023, Номер 117, С. 108849 - 108849

Опубликована: Сен. 1, 2023

Язык: Английский

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Bimetallic Sulfides with Vacancy Modulation Exhibit Enhanced Electrochemical Performance

Advanced Functional Materials, Год журнала: 2024, Номер 34(28)

Опубликована: Март 10, 2024

Abstract Transition bimetallic sulfides show significant promise for energy‐related applications because of their plentiful active sites and synergistic redox activity. However, limited pore size low‐conductivity issues hinder application. The structure NiCo–S with rich sulfur vacancies is first predicted by density functional theory (DFT) calculations. Different vacancy concentrations are modeled DFT calculations, the results confirm that enhance conductivity electrode material more beneficial adsorption OH * species. It verified differential charge electric field formed on surface can lead to strong interfacial interactions electron aggregation, which promotes electron/ion transfer kinetics. Furthermore, nanosheets prepared carbon cloth enriched different (denoted as NiCo‐Sv‐x, x representing concentration vacancies) sulfide etching NiCo‐MOF annealing under H 2 /Ar atmosphere. NiCo‐Sv‐x electrodes obtained applied cathode supercapacitors anode oxygen evolution reaction. Through combining experimental theoretical analysis, effect defect engineering electrochemical performance materials further confirmed.

Язык: Английский

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From Charge to Spin: An In‐Depth Exploration of Electron Transfer in Energy Electrocatalysis

Advanced Materials, Год журнала: 2024, Номер 36(37)

Опубликована: Март 14, 2024

Abstract Catalytic materials play crucial roles in various energy‐related processes, ranging from large‐scale chemical production to advancements renewable energy technologies. Despite a century of dedicated research, major enduring challenges associated with enhancing catalyst efficiency and durability, particularly green electrochemical reactions, remain. Focusing only on either the crystal structure or electronic is deemed insufficient break linear scaling relationship (LSR), which golden rule for design advanced catalysts. The discourse this review intricately outlines essence heterogeneous catalysis reactions by highlighting vital played electron properties. physical properties charge spin that govern efficiencies are analyzed. Emphasis placed pronounced influence external fields perturbing LSR, underscoring role plays advancing high‐performance design. culminates proffering insights into potential applications catalysis, concluding discussion extant inherent limitations.

Язык: Английский

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Atomically dispersed multi-site catalysts: bifunctional oxygen electrocatalysts boost flexible zinc–air battery performance

Energy & Environmental Science, Год журнала: 2024, Номер 17(14), С. 4847 - 4870

Опубликована: Янв. 1, 2024

Based on the advancements in atomically dispersed multi-site catalysts for FZABs, this review discusses design methodologies to regulate performance of bifunctional oxygen electrocatalysts from electronic and geometric structures.

Язык: Английский

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Oxygen Functional Groups Regulate Cobalt‐Porphyrin Molecular Electrocatalyst for Acidic H₂O₂ Electrosynthesis at Industrial‐Level Current

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(34)

Опубликована: Июнь 12, 2024

Electrosynthesis of hydrogen peroxide (H

Язык: Английский

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In situ synthesized S-type heterojunction Bi2O2CO3/CuBi2O4 enable efficient NIR light-driven H2O2 activation for water purification

Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 340, С. 123246 - 123246

Опубликована: Сен. 1, 2023

Язык: Английский

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Bifunctional Single‐Atom Iron Cocatalysts Enable an Efficient Photoelectrochemical Fuel Cell for Sensitive Biosensing

Advanced Functional Materials, Год журнала: 2023, Номер 33(46)

Опубликована: Июль 8, 2023

Abstract Semiconductor‐based photoelectrochemical (PEC) fuel cells offer a feasible solution for sustainable and environmentally friendly energy production by converting solar chemical into electrical energy. However, the low PEC activities of have hindered their practical application due to rapid electron‐hole recombination slow interfacial reaction kinetics. To address this issue, unique cell composed dual photoelectrodes utilizing low‐cost biomass, ascorbic acid, as an organic is reported. Significantly, integration bifunctional iron single‐atom catalysts (Fe SACs) photoactive materials has effectively constructed bridge charge carrier transfer, boosting kinetics photoelectric conversion efficiency. Notably, optimal dual‐photoelectrode decorated with Fe SACs exhibits superior performance, delivering maximum power density 82.82 µW cm −2 . Taking advantage peroxidase‐like activity SACs, resultant self‐powered are explored sensitively detecting actual uric acid samples. This study provides promising avenue boost efficiency sensitive biosensing.

Язык: Английский

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Rapid Hole Generation via D–A Structure‐Dependent Built‐In Electric Field of Deacetylated Chitin‐PDI for Efficient Photocatalytic Oxidation

Advanced Functional Materials, Год журнала: 2024, Номер 34(45)

Опубликована: Май 31, 2024

Abstract Breaking the trade‐off between broad spectrum response and efficient charge separation is a major challenge in photocatalysis. Unlike conventional practice of suppressing when shrinking bandgap, series deacetylated chitin‐perylene diimide (DC‐PDI) donor–acceptor (D–A) photocatalysts proposed with tunable distribution by modulating C─N covalent bond content, expanding spectral absorption range as expanded D–A. The enlarged D–A structure achieves photogenerated electron–hole increasing positive negative centers, inducing larger dipole moments, generating 4.7 times higher built‐in electric field, reducing transfer barrier. Among them, optimum DC/PDI (2:1) enables to capture largest number electrons for persulfate activation, concurrently affords highest hole generation efficiency deepest valence band (1.67 V). Such merits contribute 1.2–2.8 degradation rate 1.1–1.6 mineralization organic pollutants comparison other counterparts. can reach 100% engineered microreactor setup. This study elucidates structure‐mechanism‐performance relationship modulation separation/transport, guiding rational molecular design photocatalytic oxidation.

Язык: Английский

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