Superhydrophilic V‐Doped CoP Nanoparticles@Cu3P Nanotubes with Vacancy and Interface Engineering for Synergistically Enhanced Electrocatalytic Overall Water Splitting DOI

Yongkai Sun,

Jingjie Dai,

He Lv

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 29, 2025

Abstract Synergistically optimizing electronic structure and exposing abundant active sites to significantly improve performance of transition metal‐based electrocatalysts is an urgent necessity remains a significant challenge. Herein, hybrid nanotubes array rich P‐vacancy V‐CoP@Cu 3 P in situ grown on copper foam (V ‐V‐CoP@Cu HNTAs/CF) fabricated for overall water splitting. The combined experimental theoretical calculations reveal that V doping‐induced vacancies lead the formation local electric field within V‐CoP heterojunction‐induced built‐in field, which can jointly accelerate electron transfer charge separation, thereby enhancing reaction kinetics. Moreover, nanotube not only increase electrochemical surface area offer superior mass transfer, but also possess superhydrophilic nature utilization efficiency electrode surfaces. Due these advantages, HNTAs/CF provide distinguished HER OER activity, by employing as bifunctional electrocatalysts, splitting device delivered current density 10 mA cm −2 at low voltage 1.46 maintained its activity without decay 200 h 1 m KOH electrolyte.

Язык: Английский

Lattice Strain with Stabilized Oxygen Vacancies Boosts Ceria for Robust Alkaline Hydrogen Evolution Outperforming Benchmark Pt DOI
Xiaojing Liu, Shuaichong Wei,

Shuyi Cao

и другие.

Advanced Materials, Год журнала: 2024, Номер 36(33)

Опубликована: Июнь 12, 2024

Abstract Earth‐abundant metal oxides are usually considered as stable but catalytically inert toward hydrogen evolution reaction (HER) due to their unfavorable intermediate adsorption performance. Herein, a heavy rare earth (Y) and transition (Co) dual‐doping induced lattice strain oxygen vacancy stabilization strategy is proposed boost CeO 2 robust alkaline HER. The compression increased (O v ) concentration in synergistically improve the water dissociation on O sites sequential at activated ‐neighboring sites, leading significantly enhanced HER kinetics. Meanwhile, Y doping offers effect by its stronger Y─O bonding over Ce─O, which endows catalyst with excellent stability. Y,Co‐CeO electrocatalyst exhibits an ultra‐low overpotential (27 mV 10 mA cm −2 Tafel slope (48 dec −1 ), outperforming benchmark Pt electrocatalyst. Moreover, anion exchange membrane electrolyzer incorporated achieves stability of 500 h under 600 . This synergistic sheds new light rational development efficient oxide‐based electrocatalysts.

Язык: Английский

Процитировано

45
Synergistically Enhanced Co‐Adsorption of Reactant and Hydroxyl on Platinum‐Modified Copper Oxide for High‐Performance HMF Oxidation DOI Open Access
Jiaran Li, Rongxing Qiu,

S.N. Zhang

и другие.

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 28, 2025

Abstract Electrochemical oxidation of biomass‐derived 5‐hydroxymethylfurfural (HMF) provides an environmentally friendly route for producing the sustainable polymer monomer 2,5‐furandicarboxylic acid (FDCA). Thus, precisely adjusting synergistic adsorption among key reactive species, such as HMF and OH ads , on carefully designed catalyst surface is essential achieving satisfactory catalytic performance to FDCA it closely related strength configuration reaction substrates. This kind regulation will ultimately facilitate improvement performance. In this work, Pt nanoparticles modified CuO nanowires (denoted Pt/CuO@CF) are constructed selective electrooxidation under alkaline conditions. The well‐designed Pt/CuO@CF demonstrates highly impressive across a range concentrations, ranging from commonly used concentrations higher levels typically not explored (10, 25, 50, 75, 100 m ) with high FE (all above 95%) outstanding long‐term stability (15 cycles). situ experimental characterizations confirm that heterogeneous interface between enhances enrichment species surface. Theoretical calculations reveal anchored reduce barrier thereby promoting FDCA.

Язык: Английский

Процитировано

6
Oxygen Vacancy in Accelerating the Electrocatalytic Small Molecule Oxidation Properties DOI
Mengyuan Li,

Huamei Li,

Kun Xiang

и другие.

Electrochemical Energy Reviews, Год журнала: 2025, Номер 8(1)

Опубликована: Фев. 27, 2025

Язык: Английский

Процитировано

5
CoSe2@NiSe‐CoSe2 Heterojunction for Enhanced Electrocatalytic 5‐Hydroxymethylfurfural Oxidation Coupled with Hydrogen Evolution DOI Open Access
Shuai Liu, Wenting Cai, Mengmeng Jin

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 2, 2025

Abstract Electrochemical 5‐hydroxymethylfurfural oxidation reaction (HMFOR) offers a promising approach to producing valuable chemicals and facilitating coupled H 2 production. A significant challenge in the HMFOR lies elucidating interaction mechanisms between active sites (HMF). However, unpredictable reconstruction of during catalytic process complicates understanding these mechanisms. In this study, novel heterojunction (CoSe @NiSe‐CoSe /NF) is synthesized using straightforward hydrothermal method combined with classical selenization. This demonstrates exceptional electrocatalytic performance for direct HMF oxidation, achieving Faradaic efficiency 2,5‐furanedicarboxylic acid (FDCA) up 97.9%. Notably, it requires only 1.29 V versus RHE achieve current density 10 mA cm −2 HMFOR‐assisted hydrogen evolution (HER). The high activity primarily arises from interfacial electron redistribution. Specifically, Co modulates band structure Ni, Se serving as intermediary. modulation increases adsorption energy reduces barrier rate‐determining step HMFOR. research not achieves selective synthesis high‐value but also provides comprehensive analysis structure‐performance relationship catalyst, offering new pathway development efficient heterogeneous catalysts.

Язык: Английский

Процитировано

3
Enhancing the Electrocatalytic Oxidation of 5-Hydroxymethylfurfural Through Cascade Structure Tuning for Highly Stable Biomass Upgrading DOI Creative Commons
Xiaoli Jiang,

Xianhui Ma,

Yuanteng Yang

и другие.

Nano-Micro Letters, Год журнала: 2024, Номер 16(1)

Опубликована: Авг. 22, 2024

Abstract Electrocatalytic 5-hydroxymethylfurfural oxidation reaction (HMFOR) provides a promising strategy to convert biomass derivative high-value-added chemicals. Herein, cascade is proposed construct Pd–NiCo 2 O 4 electrocatalyst by Pd loading on Ni-doped Co 3 and for highly active stable synergistic HMF oxidation. An elevated current density of 800 mA cm –2 can be achieved at 1.5 V, both Faradaic efficiency yield 2,5-furandicarboxylic acid remained close 100% over 10 consecutive electrolysis. Experimental theoretical results unveil that the introduction atoms modulate local electronic structure Ni/Co, which not only balances competitive adsorption OH – species, but also promote Ni 3+ species formation, inducing high indirect activity. We have discovered incorporation facilitates 2+ pre-oxidation electrophilic OH* generation contribute direct process. This work new approach design advanced upgrading.

Язык: Английский

Процитировано

16
Structural designs and mechanism insights into electrocatalytic oxidation of 5-hydroxymethylfurfural DOI
Jing Lei,

Huijie Zhang,

Jian Yang

и другие.

Journal of Energy Chemistry, Год журнала: 2024, Номер unknown

Опубликована: Сен. 1, 2024

Язык: Английский

Процитировано

10
Advances in rare earth catalysts for small molecule electrosynthesis☆ DOI

Junfeng Du,

Jing Yu,

Chaohui Guan

и другие.

Journal of Rare Earths, Год журнала: 2025, Номер unknown

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

2
Unlocking the Production of Biomass-Derived Plastic Monomer 2,5-Furandicarboxylic Acid at Industrial-Level Concentration DOI

Weizhen Xie,

Yining Zhang,

Hang Zheng

и другие.

ACS Catalysis, Год журнала: 2024, Номер unknown, С. 17510 - 17524

Опубликована: Ноя. 13, 2024

2,5-Furandicarboxylic acid (FDCA) is a promising biomass-derived alternative to fossil-based terephthalic acid. The catalytic oxidation of 5-hydroxymethylfurfural (HMF) FDCA widely recognized as viable route for producing at industrially relevant concentrations (approximately 20 wt %); however, this has not yet been achieved. Toward goal, we report that through controlled engineering an oxygen-vacancy-enriched Mn/Co oxide the support Pt nanoparticles, heterostructure Pt/PtO2 with electron-rich interfacial Pt–O–Mn sites (Pt/Mn10Co1Ox-VC) formed, significantly enhancing adsorption and activation O2, HMF, its key intermediates. As result, selective both HMF (up 40 %) crude (10 % 70 purity) was achieved high yields ranging from 83% 95% under base-free conditions, demonstrating strong economic feasibility industrial potential production. This work highlights rational design structures efficient aldehydes alcohols bio-based dicarboxylic acids concentrations, paving way serve sustainable comonomer in polyester

Язык: Английский

Процитировано

8
Unraveling the Impact of Oxygen Vacancy on Electrochemical Valorization of Polyester Over Spinel Oxides DOI

Sailei Kang,

Xuyun Guo,

Dan Xing

и другие.

Small, Год журнала: 2024, Номер unknown

Опубликована: Сен. 2, 2024

Abstract Electrochemical upcycling of end‐of‐life polyethylene terephthalate (PET) using renewable electricity offers a route to generate valuable chemicals while processing plastic wastes. However, it remains huge challenge design an electrocatalyst with reliable structure‐property relationships for PET valorization. Herein, spinel Co 3 O 4 rich oxygen vacancies improved activity toward formic acid (FA) production from hydrolysate is reported. Experimental investigations combined theoretical calculations reveal that incorporation V into not only promotes the generation reactive hydroxyl species (OH * ) at adjacent tetrahedral 2+ (Co2+ Td), but also induces electronic structure transition octahedral 3+ (Co3+ Oh) Oh), which typically functions as highly‐active catalytic sites ethylene glycol (EG) chemisorption. Moreover, enlarged Co‐O covalency induced by facilitates electron transfer EG OH via Co2+ Oh‐O‐Co2+ Td interaction and following C─C bond cleavage direct oxidation glyoxal intermediate pathway. As result, ‐Co catalyst exhibits high half‐cell oxidation, Faradaic efficiency (91%) productivity (1.02 mmol cm −2 h −1 FA. Lastly, demonstrated hundred gram‐scale formate crystals can be produced real‐world bottles two‐electrode electroreforming, yield 82%.

Язык: Английский

Процитировано

7
Effect of trace Sc on corrosion behavior of titanium material in cathode roller for electrolytic copper foil DOI
Zhenguo Hou, Haitao Liu, Weiqiang Li

и другие.

Corrosion Science, Год журнала: 2025, Номер 246, С. 112722 - 112722

Опубликована: Янв. 20, 2025

Язык: Английский

Процитировано

1