Environmental Research, Год журнала: 2024, Номер unknown, С. 120487 - 120487
Опубликована: Ноя. 1, 2024
Язык: Английский
Environmental Research, Год журнала: 2024, Номер unknown, С. 120487 - 120487
Опубликована: Ноя. 1, 2024
Язык: Английский
Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 327, С. 122461 - 122461
Опубликована: Фев. 13, 2023
Язык: Английский
Процитировано
98Small, Год журнала: 2023, Номер 19(24)
Опубликована: Март 15, 2023
Regulating electronic structures of the active site by manipulating local coordination is one advantageous means to improve photocatalytic hydrogen evolution (PHE) kinetics. Herein, ZnIn2 S4 /Mo2 TiC2 Schottky junctions are designed be constructed through interfacial In3+ with electronegative O terminal group on Mo2 based different work functions. Kelvin probe force microscopy and charge density difference reveal that an unidirectional transport channel across interface from established formed nucleophilic/electrophilic region. The increased electron inhibits backflow electrons, boosts transfer separation, optimizes adsorption energy. Therefore, photocatalyst exhibits a superior PHE rate 3.12 mmol g-1 h-1 under visible light, reaching 3.03 times pristine . This provides some insights inspiration for preparing MXene-based catalysts accelerate
Язык: Английский
Процитировано
77Advanced Science, Год журнала: 2023, Номер 10(8)
Опубликована: Янв. 16, 2023
The electrocatalysts are widely applied in lithium-sulfur (Li-S) batteries to selectively accelerate the redox kinetics behavior of Li2 S, which bifunctional active sites established, thereby improving electrochemical performance battery. Considering that Li-S battery is a complex closed "black box" system, internal reaction routes and cannot be directly observed monitored especially due distribution potential active-site structures their dynamic reconstruction. Empirical evidence demonstrates traditional test methods theoretical calculations only probe net result multi-factors on an average whole scale. Herein, based amorphous TiO2-x @Ni selective model catalyst, these limitations overcome by developing system couples light field situ irradiated X-ray photoelectron spectroscopy synergistically convert into "see-through" for direct observation charge transportation, thus revealing Ni nanoparticle as oxidation reduction promote decomposition nucleation respectively. This work provides universal method achieve deeper mechanistic understanding bidirectional sulfur electrochemistry.
Язык: Английский
Процитировано
62Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 351, С. 123950 - 123950
Опубликована: Апрель 24, 2024
Язык: Английский
Процитировано
56Journal of Hazardous Materials, Год журнала: 2023, Номер 452, С. 131249 - 131249
Опубликована: Март 22, 2023
Язык: Английский
Процитировано
51Environmental Chemistry Letters, Год журнала: 2023, Номер 21(5), С. 2583 - 2617
Опубликована: Июнь 3, 2023
Abstract Burning fossil fuels account for over 75% of global greenhouse gas emissions and 90% carbon dioxide emissions, calling alternative such as hydrogen. Since the hydrogen demand could reach 120 million tons in 2024, efficient large-scale production methods are required. Here we review electrocatalytic water splitting with a focus on reaction mechanisms, transition metal catalysts, optimization strategies. We discuss mechanisms decomposition evolution. Transition catalysts include alloys, sulfides, carbides, nitrides, phosphides, selenides, oxides, hydroxides, metal-organic frameworks. The can be optimized by modifying nanostructure or electronic structure. observe that metal-based electrocatalysts excellent due to their abundant sources, low cost, controllable structures. Concerning optimization, fluorine anion doping at 1 mol/L potassium hydroxide yields an overpotential 38 mV current density 10 mA/cm 2 . efficiency also enhanced adding atoms nickel sulfide framework.
Язык: Английский
Процитировано
45ACS Catalysis, Год журнала: 2024, Номер 14(4), С. 2134 - 2143
Опубликована: Янв. 25, 2024
The waste of carbon sources and greenhouse gas production during wastewater treatment have become extremely important environmental issues. Herein, the BiOBr/BiVO4 compounds with defect-induced frustrated Lewis acid–base pairs (DFLPs) internal charge transfer were fabricated to convert organic pollutants into CO nearly 100% selectivity. oxygen vacancy (Ov) induced built-in electric field in create directional from BiOBr BiVO4. Density functional theory (DFT) calculations prove that Ov combines its adjacent hydroxyls form DFLP active sites can additionally capture activate CO2. Meanwhile, reduce formation-free energy COOH* intermediates, which is key rate-limiting step CO2 high This system has achieved selective conversion value-added chemicals pollutant degradation provides a theoretical basis for actual recycling sources.
Язык: Английский
Процитировано
32Journal of environmental chemical engineering, Год журнала: 2024, Номер 12(3), С. 112939 - 112939
Опубликована: Апрель 30, 2024
Язык: Английский
Процитировано
24Advanced Science, Год журнала: 2024, Номер 11(13)
Опубликована: Янв. 23, 2024
Abstract The efficiency of photocatalytic hydrogen evolution is currently limited by poor light adsorption, rapid recombination photogenerated carriers, and ineffective surface reaction rate. Although heterojunctions with innovative morphologies structures can strengthen built‐in electric fields maximize the separation charges. However, how to rational design novel multidimensional simultaneously improve above three bottleneck problems still a research imperative. Herein, unique Cu 2 O─S@graphene oxide (GO)@Zn 0.67 Cd 0.33 S Three dimensional (3D) hollow heterostructure designed synthesized, which greatly extends carrier lifetime effectively promotes H production rate reached 48.5 mmol g −1 h under visible after loading Ni 2+ on heterojunction surface, 97 times higher than that pure Zn nanospheres. Furthermore, reach 77.3 without cooling, verifying effectiveness photothermal effect. Meanwhile, in situ characterization density flooding theory calculations reveal efficient charge transfer at p‐n 3D interface. This study not only reveals detailed mechanism depth but also rationalizes construction superior heterojunctions, thus providing universal strategy for materials‐by‐design high‐performance heterojunctions.
Язык: Английский
Процитировано
21Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 356, С. 124223 - 124223
Опубликована: Май 22, 2024
Язык: Английский
Процитировано
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