Activity origin and alkalinity effect of electrocatalytic biomass oxidation on nickel nitride

Zhou, Bo; Dong, Chung‐Li; Huang, Yu‐Cheng; Zhang, Nana; Wu, Yandong; Lu, Yuxuan; Xu, Yan; Xiao, Zhaohui; Zou, Yuqin; Wang, Shuangyin

doi:10.1016/j.jechem.2021.02.026

Cited by 59 publications

(31 citation statements)

References 28 publications

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“…27 The charge of PA-NF was 5.47 times higher than that of NF, reflecting the enrichment of NiOOH intermediates through the surface reconstruction of PA-NF. 26 Overall, these results demonstrate that PA coordination greatly facilitates the surface reconstruction and enrichment of NiOOH catalytic intermediates on PA-NF during HMF electrooxidation.…”

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confidence: 65%

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Phytate-coordinated nickel foam with enriched NiOOH intermediates for 5-hydroxymethylfurfural electrooxidation

et al. 2022

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confidence: 65%

“…3b). 26 In addition, the recorded Nyquist plots for PA-NF and NF were simulated by a double serial equivalent circuit model (inset of Fig. S14a, ESI†), in which R 2 and C ϕ represent the resistance and pseudo-capacitance of surface reconstruction, respectively.…”

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confidence: 99%

Phytate-coordinated nickel foam with enriched NiOOH intermediates for 5-hydroxymethylfurfural electrooxidation

et al. 2022

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“…It has been reported that the aldehyde group is preferentially oxidized in 1 M KOH(aq.) (pathway I), whereas in 0.1 M KOH (∼pH 13), the oxidation of the hydroxyl group is favored (pathway II) . The reaction intermediates were collected at various pH values from 8.13 to 13.8, as shown in Figures d,e and S11–S13.…”

Section: Resultsmentioning

confidence: 99%

Integrated Catalytic Sites for Highly Efficient Electrochemical Oxidation of the Aldehyde and Hydroxyl Groups in 5-Hydroxymethylfurfural

Liu

Huang

et al. 2022

ACS Catal.

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5-Hydroxymethylfurfural oxidation reaction (HMFOR) is regarded as a promising approach to attain biomassderived high-value chemical products. As the HMFOR process is complicated, and the two-step oxidation of the aldehyde group and hydroxyl group in 5-hydroxymethylfurfural (HMF) is typically involved, it is fundamentally significant to understand the different catalytic processes for HMFOR. In this work, we identify direct and synergistic oxidation types for HMFOR on cobalt oxide catalysts. For the direct HMFOR process, Co 3 O 4 was found to have a higher activity for the aldehyde group than for the hydroxyl group due to the higher reaction barrier of hydration in the hydroxyl oxidation. By studying the hydroxyl oxidation behaviors in transition metal oxides, NiO exhibited optimal hydroxyl activity owing to the appropriate OH adsorption energy for alcohol dehydrogenation. Therefore, the optimal HMFOR performance was achieved by accurately introducing Ni into the tetrahedral catalytic sites of cobalt spinel oxides to improve the hydroxyl activity. The integrated catalytic sites enhanced the overall activity of HMFOR with 92.42% FDCA yield and 90.35% faradaic efficiency. This work provides a promising perspective for designing efficient electrocatalysts for HMFOR.

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“…Some researches suggested that the oxyhydroxides in situ generated from the non-(hydro)oxide pre-catalysts are identified as a catalytically active phase 26 , 27 . Another statement is that the NOR proceeds via adsorbate oxidation mechanism pathway 28 . Designing efficient electrocatalyst and clarifying its NOR mechanism are essential for the development of nucleophile electrooxidation.…”

Section: Introductionmentioning

confidence: 99%

Insights into the activity of nickel boride/nickel heterostructures for efficient methanol electrooxidation

et al. 2022

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Designing efficient catalysts and understanding the underlying mechanisms for anodic nucleophile electrooxidation are central to the advancement of electrochemically-driven technologies. Here, a heterostructure of nickel boride/nickel catalyst is developed to enable methanol electrooxidation into formate with a Faradaic efficiency of nearly 100%. Operando electrochemical impedance spectroscopy and in situ Raman spectroscopy are applied to understand the influence of methanol concentration in the methanol oxidation reaction. High concentrations of methanol inhibit the phase transition of the electrocatalyst to high-valent electro-oxidation products, and electrophilic oxygen species (O* or OH*) formed on the electrocatalyst are considered to be the catalytically active species. Additional mechanistic investigation with density functional theory calculations reveals that the potential-determining step, the formation of *CH2O, occurs most favorably on the nickel boride/nickel heterostructure rather than on nickel boride and nickel. These results are highly instructive for the study of other nucleophile-based approaches to electrooxidation reactions and organic electrosynthesis.

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Activity origin and alkalinity effect of electrocatalytic biomass oxidation on nickel nitride

Cited by 59 publications

References 28 publications

Phytate-coordinated nickel foam with enriched NiOOH intermediates for 5-hydroxymethylfurfural electrooxidation

Phytate-coordinated nickel foam with enriched NiOOH intermediates for 5-hydroxymethylfurfural electrooxidation

Integrated Catalytic Sites for Highly Efficient Electrochemical Oxidation of the Aldehyde and Hydroxyl Groups in 5-Hydroxymethylfurfural

Insights into the activity of nickel boride/nickel heterostructures for efficient methanol electrooxidation

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