Pd-Based Multi-Site Catalysts for Selective CO₂-to-Methanol Conversion

Inorganic Chemistry, Год журнала: 2024, Номер unknown

Опубликована: Дек. 17, 2024

Developing a multi-site Pd-based electrocatalyst for CO2-to-C1 conversion with high performance and selectivity in the hydrogenation pathway CO2 electroreduction reaction is both desirable challenging. Here, we develop triple-site metallene (Pd82Bi11In7), which can achieve an unprecedented Faraday efficiency of 72.6 ± 1% methanol production. X-ray photoelectron spectroscopy analysis indicates that some electrons transfer from In Bi to Pd inside Pd82Bi11In7, forming local electron-rich Pd-site, primary electron-deficient center In-site, secondary Bi-site. Meanwhile, Pd82Bi11In7 has stronger adsorption *COOH *CO, avoids generation formic acid CO. Moreover, reduces potential determining step energy barrier controls path direct The synergistic effect triple-sites enables efficient methanol.

Язык: Английский

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Steady Cu⁺ species via magnesium and boron co-modification for enhanced CO₂ electroreduction to C₂₊ products: an in situ Raman spectroscopic study

Inorganic Chemistry Frontiers, Год журнала: 2024, Номер 11(15), С. 4770 - 4779

Опубликована: Янв. 1, 2024

In situ Raman spectroscopy reveals that Mg and B synergistically stabilize Cu + across a wide potential range on Cu-based catalyst, facilitating the conversion of CO 2 to C 2+ products.

Язык: Английский

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Self-exfoliating Bimetallic Metal–Organic Framework Layer with Intralayer π–π Interactions for Efficient Electrical Transport and CO₂ Electroreduction

ACS Materials Letters, Год журнала: 2024, Номер 6(11), С. 5112 - 5119

Опубликована: Окт. 16, 2024

Two-dimensional metal–organic frameworks (2D MOF) have attracted great attention in the electrocatalytic reduction of CO2 owing to their well-defined structure and high surface area. Nevertheless, how combine accessible metal active sites with electron transfer still poses challenges structural assembly. Herein, two-dimensional AgCe-MOFs intralayer π–π stacking interactions were assembled by linking one-dimensional Ce–O chains Ag(I). Its nanosheet can be facilely prepared via self-exfoliation upon loss uncoordinated interlayer acetonitrile. The 2D AgCe-MOF nanosheets' merits more exposed efficient channels displayed outstanding electrochemical performance 99.5% selectivity CO. establishment electrical transport exposure catalytic a framework through designed supramolecular is expected potential strategy for construction electrocatalysts.

Язык: Английский

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Soft seed-mediated dimensional control of metal–organic framework nanocrystals through oil-in-water microemulsions

Inorganic Chemistry Frontiers, Год журнала: 2023, Номер 10(24), С. 7146 - 7154

Опубликована: Янв. 1, 2023

We demonstrate an environment-friendly universal methodology to control MOF crystal dimensions from nanometres micrometres only by introducing oil-in-water microemulsion.

Язык: Английский

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Selectivity-Enhanced Electroreduction of CO₂ to CO at Novel Ru-Linked-GO Nanohybrids: the Role of Nanoarchitecture

Inorganic Chemistry, Год журнала: 2024, Номер 63(17), С. 7571 - 7588

Опубликована: Апрель 18, 2024

Recently, global-scale efforts have been conducted for the electroreduction of CO2 as a potentially beneficial pathway conversion greenhouse gases to useful chemicals and renewable fuels. This study focuses on development selective sustainable electrocatalysts reduction aqueous CO. A RuIIcomplex [Ru(tptz)(ACN)Cl2] (RCMP) (tptz = 2,4,6-tris(2-pyridyl)-1,3,5-triazine, ACN acetonitrile) was prepared molecular electrocatalyst reaction in an solution. Density functional theory-calculated frontier orbitals suggested that tptz ligand plays key role dictating electrocatalytic reactions. The RCMP grafted onto graphene oxide (GO) surface both noncovalently (GO/RCMP) covalently (GO-RCMP). field emission scanning electron microscopy elemental distribution analyses revealed homogeneous complex GO sheet. photoluminescence spectra confirmed accelerated charge-transfer nanohybrids. Compared bare complex, GO-RCMP GO/RCMP nanohybrids showed enhanced activity, achieving >95% 90% Faradaic efficiencies CO production at more positive onset potentials, respectively. nanohybrid demonstrated outstanding activity with current ∼84 μA. offers perspective outer- inner-sphere electron-transfer mechanisms electrochemical energy systems.

Язык: Английский

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