Research progress of amorphous catalysts in the field of electrocatalysis

Microstructures, Journal Year: 2024, Volume and Issue: 4(2)

Published: April 17, 2024

Amorphous materials feature unique structures and physicochemical properties, resulting in their synthesis applications becoming a dynamic fascinating new research direction. The high specific surface area, abundant active sites, good electron transport properties endow amorphous with excellent electrocatalytic thus appealing to increasing attention. Based on this, the summary of current status catalysts field electrocatalysis is urgent important. In this review, progress systematically introduced, focusing classification, methods, modification strategies, characterizations, application (including hydrogen evolution reaction, oxygen reduction carbon dioxide nitrogen reaction). Finally, review proposes prospects challenges for future development high-active high-selectivity electrocatalysts.

Language: Английский

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Boron‐Doping Engineering in AgCd Bimetallic Catalyst Enabling Efficient CO₂ Electroreduction to CO and Aqueous Zn‐CO₂ Batteries

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 8, 2024

Abstract The limited adsorption and activation of CO 2 on catalyst the high energy barrier for intermediate formation hinder development electrochemical reduction reactions (CO RR). Herein, this work reports a boron (B) doping engineering in AgCd bimetals to alleviate above limitations efficient electroreduction aqueous Zn‐CO batteries. Specifically, B‐doped bimetallic (AgCd‐B) is prepared via simple reaction at room temperature. A combination situ experiments density functional theory (DFT) calculations demonstrates that B‐doping simultaneously enhances reduces binding intermediates by moderating electronic structure bimetals. As result, AgCd‐B exhibits Faraday efficiency (FE ) 99% −0.8 V versus reversible hydrogen electrode (RHE). Additionally, it maintains FE over 92% wide potential window 600 mV (−0.6 −1.1 RHE). Furthermore, coupled with Zn anode assemble batteries shows power 20.18 mW cm −2 recharge time 33 h.

Language: Английский

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Surface-Reconstructed, Mesoporous In_1.8Bi_0.2O₃ Nanocubes as Electrocatalysts for Efficient CO₂ Conversion to Formate

ACS Catalysis, Journal Year: 2024, Volume and Issue: unknown, P. 17571 - 17581

Published: Nov. 14, 2024

Precise control and understanding of surface changes in indium (In)-based catalysts during the electrocatalytic CO2 reduction reaction (CO2RR) process are challenging. This study presents a series surface-reconstructed In2O3–Bi electrocatalysts, created by doping mesoporous In2O3 nanocubes with bismuth (Bi). introduces abundant bimetallic In–Bi sites at crystal–amorphous interfaces, enhancing CO2-to-formate conversion selectivity. Bi atoms accelerate reconstruction In2O3, reduce charge density around In atoms, promote partial amorphization. situ X-ray diffraction (XRD) Fourier-transform infrared spectroscopy (FT-IR) measurements functional theory (DFT) calculations show that lower energy barrier for HCOOH* intermediate, enhance H2O dissociation, inhibit hydrogen evolution (HER). The In1.8Bi0.2O3 electrocatalyst demonstrates Faradaic efficiency (FE) 92.6% current −28.5 mA·cm–2 operates stably 110 h H-type cell. flow cell, it achieves an FE formate (FEformate) 97.6% −1.4 VRHE maintains above 94% FEformate over potential window 800 mV (from −1.0 to −1.8 V vs RHE). offers effective approach designing high-performance electrocatalysts CO2RR based on reconstruction.

Language: Английский

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Advancements in electrochemical synthesis: expanding from water electrolysis to dual-value-added products

eScience, Journal Year: 2024, Volume and Issue: unknown, P. 100333 - 100333

Published: Nov. 1, 2024

Language: Английский

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Cu-MOF and CuBi Double-Perovskite Composites for Selective CO₂ Electroreduction to HCOOH

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(42), P. 15651 - 15658

Published: Oct. 4, 2024

Language: Английский

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Phase Interface Regulating on Amorphous/Crystalline Bismuth Catalyst for Boosted Electrocatalytic CO₂ Reduction to Formate

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(40), P. 47016 - 47024

Published: Sept. 28, 2023

Electroreduction of carbon dioxide into readily collectable and high-value carbon-based fuels is greatly significant to overcome the energy environmental crises yet challenging in development robust highly efficient electrocatalysts. Herein, a bismuth (Bi) heterophase electrode with enriched amorphous/crystalline interfaces was fabricated via cathodically situ transformation Bi-based metal-phenolic complexes (Bi-tannic acid, Bi-TA). Compared amorphous or crystalline Bi catalyst, structure leads significantly enhanced performance for CO2 electroreduction. In liquid-phase H-type cell, Faraday efficiency (FE) formate formation over 90% wide potential range from -0.8 -1.3 V, demonstrating high selectivity toward formate. Moreover, flow large current density reaching 600 mA cm-2 can further be rendered production. Theoretical calculations indicate that interface exhibits favorable adsorption lower barriers rate-determining step compared counterparts, thus accelerating reaction process. This work paves way rational design advanced heterointerface catalysts reduction.

Language: Английский

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Synergistic effects of heterogeneous interfaces and induced oxygen vacancies enhance the CuO/In2O3 performance in catalytic urea synthesis

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 496, P. 154063 - 154063

Published: July 17, 2024

Language: Английский

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A Cu hollow fiber with coaxially grown Bi nanosheet arrays as an integrated gas-penetrable electrode enables high current density and durable formate electrosynthesis

Nanoscale, Journal Year: 2023, Volume and Issue: 16(5), P. 2295 - 2302

Published: Dec. 21, 2023

While high current density formate (HCOO-) electrosynthesis from CO2 reduction has been achieved in a flow cell assembly, the inevitable flooding and salt precipitation of traditional gas-diffusion electrodes (GDEs) severely limit overall energy efficiency stability. In this work, an integrated gas-penetrable electrode (GPE) for HCOO- was developed by coaxially growing vertically aligned Bi nanosheet arrays on porous Cu hollow fiber (Bi NSAs@Cu HF) via controllable galvanic replacement. The interior HF serves as robust conductive host continuously delivering gas to surface-anchored NSAs, resulting numerous well-balanced triphase active interfaces electrocatalytic reaction (CO2RR). most GPE exhibits faradaic (FEHCOO-) over 80% wide potential window (330 mV) with linearly increased partial (jHCOO-) up -261.6 mA cm-2 at -1.11 V vs. reversible hydrogen (RHE). also sustains FEHCOO- >80% total -300 cm-2, corresponding jHCOO- >-240 more than 60 h. This work provides new perspectives designing efficient durable GPEs sustainable CO2RR large scale.

Language: Английский

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Progress in Catalysts for Formic Acid Production by Electrochemical Reduction of Carbon Dioxide

Topics in Current Chemistry, Journal Year: 2024, Volume and Issue: 383(1)

Published: Dec. 3, 2024

Language: Английский

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

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 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.

Language: Английский

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