Bio-Inspired Iron-Based Carbonic Anhydrase Mimic for CO₂ Hydration and Conversion

ACS Sustainable Chemistry & Engineering, Год журнала: 2023, Номер 11(19), С. 7388 - 7397

Опубликована: Май 4, 2023

CO2 conversion by stable, cost-effective carbonic anhydrase (CA)-like nanozymes emerges as an efficient and sustainable approach for fixation. In this work, a novel iron-based nanomaterial (Fe10@CN-Mg) was first reported to be CA mimic, in which FeNx sites Mg(OH)2 play synergistically catalytic effect conversion. Although material has much lower metal content cost, it comparable kinetic constants (Km 6.37 mM Vmax 30.74 mM/min) significantly higher CaCO3 formation rate (20.60 g·g–1·h–1, the quality of produced per hour gram catalyst) than that mimics. Fe10@CN-Mg is stable when processed at extreme pH, high temperature, organic solvents, ionic strength also retains activity after long storage times (two months) seven cycles. addition, successfully applied convert into cyclic carbonates with economic efficiency.

Язык: Английский

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In Situ Fe/Co/B Codoped MoS₂ Ultrathin Nanosheets Enable Efficient Electrocatalytic Nitrogen Reduction

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(32), С. 41734 - 41742

Опубликована: Авг. 2, 2024

The development of sustainable and effective electrochemical nitrogen fixation catalysts is crucial for the mitigation terrible energy consumption resulting from Haber-Bosch process. Molybdenum disulfide (MoS2) exhibits promise toward reduction reaction (NRR) on account its similar structure to natural nitrogenases MoFe-co but still undergoes serious challenges with unsatisfactory catalytic performance resulted limited active sites, conductivity, selectivity. In this work, Fe/Co/B codoped MoS2 ultrathin nanosheets are synthesized verified as excellent NRR high activity, selectivity, durability. FeCoB-MoS2 demonstrates a ammonia yield 36.99 μg h–1 mgcat–1 at −0.15 V vs RHE Faraday efficiency (FE) 30.65% −0.10 in 0.1 M HCl. experimental results density functional theory (DFT) calculations emphasize that codoping Fe, Co, B into synergistically enhances conductivity optimizes electronic catalyst, which significantly improves electrocatalytic synthesis performance. This work broadens potential enlightens strategy designing efficient electrocatalysts field.

Язык: Английский

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Nitrogen and Phosphorus Dual-Coordinated Single-Atom Mn: MnN₂P Active Sites for Catalytic Transfer Hydrogenation of Nitroarenes

ACS Applied Materials & Interfaces, Год журнала: 2022, Номер 14(50), С. 55568 - 55576

Опубликована: Дек. 12, 2022

The coordination environment of atomically metal sites can modulate the electronic states and geometric structure single-atom catalysts, which determine their catalytic performance. In this work, porous carbon-supported N, P dual-coordinated Mn catalyst was successfully prepared via phosphatization zeolitic imidazolate frameworks followed by pyrolysis at 900 °C. optimal Mn1-N/P-C with atomic MnN2P has displayed better activity than related Mn-Nx in transfer hydrogenation nitroarenes using formic acid as hydrogen donor. We find that doping source plays a crucial role improving performance, affects morphology properties catalyst. This is first heterogeneous example for reduction nitroarenes, it also revealed configuration more promising alternative catalysis.

Язык: Английский

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Selective Hydrodeoxygenation of Lignin‐Derived Phenolic Monomers to Cyclohexanol over Tungstated Zirconia Supported Ruthenium Catalysts

ChemSusChem, Год журнала: 2024, Номер unknown

Опубликована: Июнь 24, 2024

Abstract The selective hydrodeoxygenation (HDO) of lignin‐derived methoxyphenols to cyclohexanol is one the most significant transformation in biomass conversion since an important industrial raw material. This study has disclosed a series tungstated zirconia with different Zr/W ratio supported Ru catalysts (Ru/xZrW, x means molar ration Zr/W) for guaiacol cyclohexanol. Among these catalysts, Ru/16ZrW best catalytic activity, which can achieve 92 % yield under conditions 180 °C and 1 MPa H 2 pressure h (TOF 231 −1 ). Compared Ru/ZrO , smaller particles, more dispersed electron‐rich species, hydrogen spillover acid sites, are main reason its excellent performance on this reaction. Apart from guaiacol, other methoxy substitution phenols organosolv lignin also be converted into via reactions over catalyst.

Язык: Английский

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Iron catalyzed organic reactions in water: A “nature-like” synthesis

Current Opinion in Green and Sustainable Chemistry, Год журнала: 2023, Номер 40, С. 100754 - 100754

Опубликована: Янв. 10, 2023

Язык: Английский

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