SiO₂ assisted Cu⁰–Cu⁺–NH₂ composite interfaces for efficient CO₂ electroreduction to C₂₊ products

Journal of Materials Chemistry A, Journal Year: 2023, Volume and Issue: 12(2), P. 1218 - 1232

Published: Dec. 13, 2023

SiO 2 assisted abundant Cu 0 –Cu + –NH composite interfaces enhance the adsorption and activation of CO H O, strengthen intermediates, promote C–C coupling to produce C 2+ products.

Language: Английский

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Review on strategies for improving the added value and expanding the scope of CO₂ electroreduction products

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(10), P. 5149 - 5189

Published: Jan. 1, 2024

This review summarizes promising strategies including the design of catalysts and construction coupled electrocatalytic reaction systems, aimed at achieving selective production various products from CO 2 electroreduction.

Language: Английский

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A coupled electrocatalytic system with reduced energy input for CO₂ reduction and biomass valorization

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(11), P. 5305 - 5314

Published: Jan. 1, 2023

A cathodic electrochemical CO 2 reduction to formate coupled anodic 5-hydroxymethylfurfural electrooxidation 2,5-furandicarboxylic acid pair electrolysis system was developed for conversion and biomass valorization with low energy consumption.

Language: Английский

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Phase-dependent Electrocatalytic Nitrate Reduction to Ammonia on Janus Cu@Ni Tandem Catalyst

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(7), P. 5098 - 5108

Published: March 21, 2024

Electrosynthesis of NH3 from nitrate anion (NO3–) reduction (NO3–RR) is a cascade reaction, which considered great potential alternative to the Haber–Bosch route reduce CO2 emissions and alleviate adverse effects excessive NO3– contamination in environment. Frequently, solid solution alloys (SSAs) with single-phase active site may struggle fully utilize their benefits during entire process reduction, involves multiple intermediate reactions. In this study, we showed that by separating Cu Ni Janus Cu@Ni catalyst structure, can achieve high performance NO3–RR, yielding Faradaic efficiency (92.5%) production rate (1127 mmol h–1 g–1) at −0.2 V versus RHE, compared CuNi SSA (82.6%, 264 g–1). Here, demonstrate short-range ordered catalytic sites favors adsorption NO through bridge-bond mode. Simultaneously, hydrogen spillover was observed, dissociates H2O generate *H spontaneously migrates adjacent hydrogenate *NOx intermediates. This facilitates N–O bond cleavage, resulting nearly 5 times higher than SSA, where linearly bonded on its surface. The study effect, cooperative tandem enhancement, provides insights into design multifunctional heterogeneous catalysts for electrochemical synthesis.

Language: Английский

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Unveiling pH‐Dependent Adsorption Strength of *CO₂⁻ Intermediate over High‐Density Sn Single Atom Catalyst for Acidic CO₂‐to‐HCOOH Electroreduction

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(14)

Published: Feb. 16, 2024

Abstract The acidic electrochemical CO 2 reduction reaction (CO RR) for direct formic acid (HCOOH) production holds promise in meeting the carbon‐neutral target, yet its performance is hindered by competing hydrogen evolution (HER). Understanding adsorption strength of key intermediates electrolyte indispensable to favor RR over HER. In this work, high‐density Sn single atom catalysts (SACs) were prepared and used as catalyst, reveal pH‐dependent coverage *CO − intermediatethat enables enhanced towards HCOOH production. At pH=3, SACs could deliver a high Faradaic efficiency (90.8 %) formation corresponding partial current density up −178.5 mA cm −2 . detailed situ attenuated total reflection Fourier transform infrared (ATR‐FTIR) spectroscopic studies that favorable alkaline microenvironment formed near surface SACs, even electrolyte. More importantly, intermediate unravelled which turn affects competition between HER

Language: Английский

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Electronic Structure Design of Transition Metal-Based Catalysts for Electrochemical Carbon Dioxide Reduction

ACS Nano, Journal Year: 2024, Volume and Issue: 18(14), P. 9823 - 9851

Published: March 28, 2024

With the increasingly serious greenhouse effect, electrochemical carbon dioxide reduction reaction (CO2RR) has garnered widespread attention as it is capable of leveraging renewable energy to convert CO2 into value-added chemicals and fuels. However, performance CO2RR can hardly meet expectations because diverse intermediates complicated processes, necessitating exploitation highly efficient catalysts. In recent years, with advanced characterization technologies theoretical simulations, exploration catalytic mechanisms gradually deepened electronic structure catalysts their interactions intermediates, which serve a bridge facilitate deeper comprehension structure-performance relationships. Transition metal-based (TMCs), extensively applied in CO2RR, demonstrate substantial potential for further modulation, given abundance d electrons. Herein, we discuss representative feasible strategies modulate catalysts, including doping, vacancy, alloying, heterostructure, strain, phase engineering. These approaches profoundly alter inherent properties TMCs interaction thereby greatly affecting rate pathway CO2RR. It believed that rational design modulation fundamentally provide viable directions development toward conversion many other small molecules.

Language: Английский

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Homogeneous In‐Plane Lattice Strain Enabling d‐Band Center Modulation and Efficient d–π Interaction for an Ag₂Mo₂O₇ Cathode Catalyst With Ultralong Cycle Life in Li‐O₂ Batteries

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

Published: June 14, 2024

Abstract Although lithium–oxygen batteries (LOBs) hold great promise as future energy storage systems, they are impeded by insulated discharge product Li 2 O and sluggish oxygen reduction reaction/oxygen evolution revolution (ORR/OER) kinetics. The application of a highly efficient cathode catalyst determines the LOBs performance. d‐band modulation catalytic kinetics promotion important concept guidelines for performance enhancement catalysts. In this work, homogeneous in‐plane distortion‐derived synergistic capability an Ag Mo 7 with modulated centers promoted ORR/OER is demontrated. uniform elongation Ag─O bonds compression Mo─O in (020) plane leads to splitting center optimization delivers improved adsorption behavior high capability. Furthermore, spatial overlap d xz anti‐bonding π * orbitals facilitate electron injection during ORR process reduce barrier charge transfer desorption OER process, accelerating As result, plane‐exposed exhibits ultralong cycle stability 817 cycles at 500 mA g −1 large specific discharge/charge capacities 15898/15180 mAh . This work provides facile guidance optimizing through controlled lattice distortion catalysts LOBs.

Language: Английский

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Highly Selective Electrocatalytic CO₂ Conversion to Tailored Products through Precise Regulation of Hydrogenation and C–C Coupling

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(29), P. 20530 - 20538

Published: July 11, 2024

The electrochemical reduction reaction of carbon dioxide (CO

Language: Английский

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Boosting CO2 electrocatalytic reduction to ethylene via hydrogen-assisted C-C coupling on Cu2O catalysts modified with Pd nanoparticles

Nano Energy, Journal Year: 2024, Volume and Issue: 122, P. 109275 - 109275

Published: Jan. 10, 2024

Language: Английский

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Fluorine Modification Promoted Water Dissociation into Atomic Hydrogen on a Copper Electrode for Efficient Neutral Nitrate Reduction and Ammonia Recovery

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(16), P. 7208 - 7216

Published: April 14, 2024

Electrocatalytic nitrate reduction to ammonia (NITRR) offers an attractive solution for alleviating environmental concerns, yet in neutral media, it is challenging as a result of the reliance on atomic hydrogen (H*) supply by breaking stubborn HO-H bond (∼492 kJ/mol) H

Language: Английский

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