Chemical Communications, Год журнала: 2024, Номер unknown
Опубликована: Дек. 13, 2024
Doping Cu and in situ electrochemical reconstruction on Bi 2 O CO 3 optimize the hybridization between 6p of 2p *OCHO, leading to high HCOO − faradaic efficiency >96% all-pH range satisfactory durability.
Язык: Английский
Small, Год журнала: 2025, Номер unknown
Опубликована: Янв. 2, 2025
Growing global population, escalating energy consumption, and climate change threaten future security. Fossil fuel combustion, primarily coal, oil, natural gas, exacerbates the greenhouse effect driving warming through CO
Язык: Английский
Процитировано
2
Applied Organometallic Chemistry, Год журнала: 2025, Номер 39(1)
Опубликована: Янв. 1, 2025
ABSTRACT In the pursuit of sustainable energy solutions, spotlight shines on advancement effective storage systems and green hydrogen production. this work, UU 200 (UU: Uppsala University) metal–organic framework (MOF)/bismuth oxide (Bi 4 O 8 ), termed 200/Bi nanocomposite, has been synthesized utilized as an electrode material for supercapacitor applications electrocatalyst evolution reaction (HER). XRD, Raman, FT‐IR, XPS tests showed that nanocomposite was successfully formed. The SEM TEM images revealed exhibits a mixed rod spherical structure. performance pure examined through cyclic voltammetry (CV), galvanostatic charge–discharge (GCD), electrochemical impedance (EIS) measurements. Interestingly, delivered maximum specific capacitance value 220 F g −1 at 1 A . Furthermore, potential extended beyond its capability to electrocatalytic HER process. performances were assessed linear sweep (LSV), CV, chronoamperometry (CA), EIS analysis. overpotential (ɳ) 130 mV Tafel slope 131 dec indicate supremacy in advanced applications. excellent water‐splitting performance, allowing it acquire future needs.
Язык: Английский
Процитировано
1
Advanced Functional Materials, Год журнала: 2024, Номер unknown
Опубликована: Дек. 16, 2024
Abstract The electrocatalytic conversion of carbon dioxide (CO 2 ) to formate is significant for neutrality. How improve the reaction kinetics electrocatalysts one important challenges. An innovative electrodeposition strategy presented herein rationally synthesize vanadium oxide (VO x clusters decorated Bi‐Sn alloy (BiSn(VO )) catalyst. Theoretical and in situ spectral studies confirm simultaneously improved CO activation subsequent protonation via VO mediated water dissociation process, thereby optimizing activity selectivity formate. Remarkably, this BiSn(VO catalyst achieves high Faradic efficiency (FE) over 90% within wide potential window 800 mV excellent stability 100 h at −0.6 V versus RHE. Moreover, cathode integrated rechargeable Zn‐CO battery realizes largest power density 3.8 mW cm −2 , while assembled co‐electrolysis electrolyzer delivers a total FE 182% cell voltage 0.6 V, outperforming highest value so far. work provides promising way develop advanced electrolysis.
Язык: Английский
Процитировано
7
ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(32), С. 42109 - 42117
Опубликована: Авг. 1, 2024
The electrochemical CO2 reduction reaction (ECO2RR) is a promising strategy for converting into high-value chemical products. However, the synthesis of effective and stable electrocatalysts capable transforming specified product remains huge challenge. Herein, we report template-regulated preparation Bi2O3-derived nanosheet catalyst with abundant porosity to achieve expectantly efficient CO2-to-formate conversion. resultant porous bismuth (p-Bi) not only exhibited marked Faradaic efficiency formate (FEformate), beyond 91% in broad potential range from −0.75 −1.1 V H-type cell, but also demonstrated an appreciable FEformate 94% at high current density 262 mA cm–2 commercially important gas diffusion cell. State-of-the-art X-ray absorption near edge structure spectroscopy (XANES) theoretical calculation unraveled distinct production performance p-Bi catalyst, which was cocontributed by its smaller size, plentiful structure, stronger Bi–O bond, thus accelerating promoting subsequent formation intermediates. This work provides avenue fabricate bismuth-based catalysts planar morphologies portfolio applications.
Язык: Английский
Процитировано
5
Advanced Materials, Год журнала: 2024, Номер unknown
Опубликована: Окт. 12, 2024
Abstract Formic acid (FA) has emerged as a promising candidate for hydrogen energy storage due to its favorable properties such low toxicity, flammability, and high volumetric capacity under ambient conditions. Recent analyses have suggested that FA produced by electrochemical carbon dioxide (CO 2 ) reduction reaction (eCO RR) using low‐carbon electricity exhibits lower fugitive (H emissions global warming potential (GWP) during the H carrier production, transportation processes compared those of other alternatives like methanol, methylcyclohexane, ammonia. eCO RR can enable industrially relevant current densities without need pressures, temperatures, or auxiliary sources. However, widespread implementation is hindered requirement highly stable selective catalysts. Herein, aim explore evaluate catalyst engineering in designing nanostructured catalysts facilitate economically viable production FA.
Язык: Английский
Процитировано
4
Advanced Energy Materials, Год журнала: 2024, Номер unknown
Опубликована: Дек. 26, 2024
Abstract As a frontier method for adjusting the electronic and geometric configurations of metal sites, lattice strain engineering plays key role in regulating interaction between catalytic surface adsorbed molecules. Here, research progress effects electrochemical carbon dioxide reduction (CO 2 RR) is reviewed. Starting from basic principles CO RR, advanced situ characterization techniques are summarized. The effect on structure–activity relationship RR comprehensively discussed. Subsequently, electrocatalysts with different properties rich classified, including core–shell structure catalysts, alloys, transition compounds, single‐atom catalysts. Finally, obstacles encountered practical application proposed, future direction this emerging field prospected.
Язык: Английский
Процитировано
4
Nano Letters, Год журнала: 2025, Номер unknown
Опубликована: Май 7, 2025
Electroreduction of CO2 (ECR) to CO or syngas is an effective approach alleviating greenhouse gas emissions. Herein, nickel nanoparticles coated with halogen/nitrogen codoped carbon were prepared (X-Ni/NC-a). Cl-Ni/NC-a can obtain three important compositions (CO:H2) under different voltages, such as 0.97, 0.51, and 0.32, which are the ratios for hydroformylation, methanol, ethanol synthesis, respectively. For Br-Ni/NC-a, Faraday efficiency (FEco) exceed 96%, a partial current density (jco) 48 mA cm-2. Additionally, Br-Ni/NC-a used in Zn-CO2 battery (ZCB); power reach 2.6 mW cm-2, charge-discharge stability 110 h. DFT calculations revealed that strong interaction between regulates electronic structure catalyst, affecting adsorption/desorption intermediates. This study provides feasible scheme halogen doping modulate selectivity ECR potential application catalysts ZCB.
Язык: Английский
Процитировано
0
Chemical Communications, Год журнала: 2024, Номер unknown
Опубликована: Дек. 13, 2024
Doping Cu and in situ electrochemical reconstruction on Bi 2 O CO 3 optimize the hybridization between 6p of 2p *OCHO, leading to high HCOO − faradaic efficiency >96% all-pH range satisfactory durability.
Язык: Английский
Процитировано
0