Understanding the surface segregation behavior of bimetallic CoCu toward HMF oxidation reaction

Zhu, Yi; Shi, Jihua; Li, Yingying; Lu, Yuxuan; Zhou, Bo; Wang, Shuangyin; Zou, Yuqin

doi:10.1016/j.jechem.2022.05.041

Cited by 30 publications

(8 citation statements)

References 49 publications

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“…As the potential increases to 0.35 V versus Ag/AgCl, the inflection point (yellow circle, the area with obvious curvature change) of m- and u-NiFe-LDH appears in the low frequency region, indicating that both the OER and MOR occur at this potential. As shown in Figure C,D, compared with u-NiFe-LDH, the phase angle value of m-NiFe-LDH is lower in the low-frequency region, indicating that more electrons are distributed at the catalyst/electrolyte interface, and the surface interaction is enhanced, which is more conducive to the electrocatalytic MOR reaction. − It can be inferred that the presence of defect structure in the m-NiFe-LDH can promote the enrichment of surface electrons and thus enhance MOR reactivity. , …”

Section: Resultsmentioning

confidence: 96%

Boosting the Hydrogen Production Coupling with Electrochemical Methanol Oxidation to Formate Using Monolayered Layered Double Hydroxide Nanosheets

Ren,

Xing,

Lai

et al. 2023

Ind. Eng. Chem. Res.

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The process of electrolytic water splitting for hydrogen production is considered a promising approach for achieving sustainable and environmentally friendly development. However, this is hindered by the challenge of water oxidation. The favorable methanol oxidation reaction (MOR) to formate at the anode to replace the sluggish kinetic oxygen evolution reaction (OER) can reduce power consumption and offer a new route for the production of hydrogen. Herein, we carried out a simple, commercially scaled-up synthesis method to synthesize monolayer layered double hydroxide (LDH) powders through separate nucleation and aging steps (SNAS). The acquired monolayer NiFe-LDH (m-NiFe-LDH) exhibited improved MOR activity, promoting the rate of high-value formate about 12 times that of its multilayer counterpart (u-NiFe-LDH). Moreover, the MOR catalyzed by m-NiFe-LDH can further increase the hydrogen production rate of the cathode, which is more than 5 times higher than that of u-NiFe-LDH. The effective approach to increasing the production scale of synthesizing monolayer LDH powders with defects has provided novel perspectives on the generation of formate and green hydrogen.

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Section: Resultsmentioning

confidence: 96%

Boosting the Hydrogen Production Coupling with Electrochemical Methanol Oxidation to Formate Using Monolayered Layered Double Hydroxide Nanosheets

Ren,

Xing,

Lai

et al. 2023

Ind. Eng. Chem. Res.

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“…The formation of BIEF is usually related to the charge redistribution caused by the spontaneous flow of electrons at the interface. − Generally speaking, when two dissimilar materials (A and B, at least one is a semiconductor) closely contact with each other, the energy band difference would induce an interfacial polarization, thus resulting in a potential difference. Such a difference will drive oriented electron transportation near the interface until the Fermi level on both sides is aligned .…”

Section: Introductionmentioning

confidence: 99%

Designing a Built-In Electric Field for Efficient Energy Electrocatalysis

et al. 2022

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To utilize intermittent renewable energy as well as achieve the goals of peak carbon dioxide emissions and carbon neutrality, various electrocatalytic devices have been developed. However, the electrocatalytic reactions, e.g., hydrogen evolution reaction/ oxygen evolution reaction in overall water splitting, polysulfide conversion in lithium− sulfur batteries, formation/decomposition of lithium peroxide in lithium−oxygen batteries, and nitrate reduction reaction to degrade sewage, suffer from sluggish kinetics caused by multielectron transfer processes. Owing to the merits of accelerated charge transport, optimized adsorption/desorption of intermediates, raised conductivity, regulation of the reaction microenvironment, as well as ease to combine with geometric characteristics, the built-in electric field (BIEF) is expected to overcome the above problems. Here, we give a Review about the very recent progress of BIEF for efficient energy electrocatalysis. First, the construction strategies and the characterization methods (qualitative and quantitative analysis) of BIEF are summarized. Then, the up-to-date overviews of BIEF engineering in electrocatalysis, with attention on the electron structure optimization and reaction microenvironment modulation, are analyzed and discussed in detail. In the end, the challenges and perspectives of BIEF engineering are proposed. This Review gives a deep understanding on the design of electrocatalysts with BIEF for nextgeneration energy storage and electrocatalytic devices.

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“…[1][2][3][4][5] Among the numerous platform compounds, cellulose-derived 5-hydroxymethylfurfural (HMF) has high application potential. [6][7][8] For the business demand, HMF was usually further converted into 2,5-diformylfuran (DFF) and 2,5-furandicarboxylic acid (FDCA) through a catalytic oxidation process. Among them, DFF can synthesize a series of high-value chemicals through the reactions such as hydrogenation, oxidation, polymerization, and hydrolysis and has broad market prospects.…”

Section: Introductionmentioning

confidence: 99%

In Situ Topochemical Transformation of ZnIn₂S₄ for Efficient Photocatalytic Oxidation of 5‐Hydroxymethylfurfural to 2,5‐Diformylfuran

Zhu

Deng

Tan

et al. 2023

Adv Funct Materials

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Photocatalytic selective oxidation of 5‐hydroxymethylfurfural (HMF) coupled H2 production offers a promising approach to producing valuable chemicals. Herein, an efficient in situ topological transformation tactic is developed for producing porous O‐doped ZnIn2S4 nanosheets for HMF oxidation cooperative with H2 evolution. Aberration‐corrected high‐angle annular dark‐field scanning TEM images show that the hierarchical porous O‐ZIS‐120 possesses abundant atomic scale edge steps and lattice defects, which is beneficial for electron accumulation and molecule adsorption. The optimal catalyst (O‐ZIS‐120) exhibits remarkable performance with 2,5‐diformylfuran (DFF) yields of 1624 µmol h−1 g−1 and the selectivity of >97%, simultaneously with the H2 evolution rate of 1522 µmol h−1 g−1. Mechanistic investigations through theoretical calculations show that O in the O‐ZIS‐120 lattice can reduce the oxidation energy barrier of hydroxyl groups of HMF. In situ attenuated total reflection surface‐enhanced infrared absorption spectroscopy (ATR‐SEIRAS) results reveal that DFF* (C4H2(CHO)2O*) intermediate has a weak interaction with O‐ZIS‐120 and desorb as the final product. This study elucidates the topotactic structural transitions of 2D materials simultaneously with electronic structure modulation for efficient photocatalytic DFF production.

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Understanding the surface segregation behavior of bimetallic CoCu toward HMF oxidation reaction

Cited by 30 publications

References 49 publications

Boosting the Hydrogen Production Coupling with Electrochemical Methanol Oxidation to Formate Using Monolayered Layered Double Hydroxide Nanosheets

Boosting the Hydrogen Production Coupling with Electrochemical Methanol Oxidation to Formate Using Monolayered Layered Double Hydroxide Nanosheets

Designing a Built-In Electric Field for Efficient Energy Electrocatalysis

In Situ Topochemical Transformation of ZnIn₂S₄ for Efficient Photocatalytic Oxidation of 5‐Hydroxymethylfurfural to 2,5‐Diformylfuran

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Understanding the surface segregation behavior of bimetallic CoCu toward HMF oxidation reaction

Cited by 30 publications

References 49 publications

Boosting the Hydrogen Production Coupling with Electrochemical Methanol Oxidation to Formate Using Monolayered Layered Double Hydroxide Nanosheets

Boosting the Hydrogen Production Coupling with Electrochemical Methanol Oxidation to Formate Using Monolayered Layered Double Hydroxide Nanosheets

Designing a Built-In Electric Field for Efficient Energy Electrocatalysis

In Situ Topochemical Transformation of ZnIn2S4 for Efficient Photocatalytic Oxidation of 5‐Hydroxymethylfurfural to 2,5‐Diformylfuran

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In Situ Topochemical Transformation of ZnIn₂S₄ for Efficient Photocatalytic Oxidation of 5‐Hydroxymethylfurfural to 2,5‐Diformylfuran