Thiol‐Modulation‐Induced Mesoporous Nanosheets with an Alloy/Intermetallic Heterophase for Efficient Electrochemical Ethylene Glycol‐Assisted Water Splitting DOI Creative Commons

Fukai Feng,

Sumei Han,

Chaoqun Ma

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 25, 2025

Abstract Ligand modification has been widely utilized to tune the coordination environment of active sites in noble metal‐based electrocatalysts enhance their catalytic activity and selectivity. However, ligand‐induced structure transition catalyst its effect on performance is not clear. In this study, a thiol strategy developed prepare sulfur‐capped mesoporous PtPbBi nanosheets (S‐PtPbBi MNSs) with an alloy/intermetallic compound heterophase inhomogeneous tensile strain (≈3%). The obtained S‐PtPbBi MNSs exhibit excellent electrocatalytic for ethylene glycol oxidation reaction (EGOR), achieving Faradic efficiency up 92% converting EG glycolic acid. EG‐assisted electrochemical water splitting, only require low cell voltage 0.60 V achieve current density 10 mA cm −2 . anion exchange membrane electrolyzer utilizing can drive 500 at 1.63 V, along exceptional stability 200 h. Density functional theory calculations reveal that facilitates adsorption reactants enhances electron transfer between key intermediate. This work provides deep insights into ligand modification‐induced construction novel catalysts creates new opportunities small molecule‐assisted splitting efficient production hydrogen.

Язык: Английский

Destabilization of Single‐Atom Catalysts: Characterization, Mechanisms, and Regeneration Strategies DOI Open Access

Zhiquan Lang,

Xixi Wang,

Sobia Jabeen

и другие.

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 19, 2025

Abstract Numerous in situ characterization studies have focused on revealing the catalytic mechanisms of single‐atom catalysts (SACs), providing a theoretical basis for their rational design. Although research is relatively limited, stability SACs under long‐term operating conditions equally important and prerequisite real‐world energy applications, such as fuel cells water electrolyzers. Recently, there has been rise destabilization regeneration SACs; however, timely comprehensive summaries that provide catalysis community with valuable insights directions are still lacking. This review summarizes recent advances strategies SACs, specifically highlighting various state‐of‐the‐art techniques employed studies. The factors induce identified by discussing failure active sites, coordination environments, supports, reaction scenarios. Next, primary introduced, including redispersion, surface poison desorption, exposure subsurface sites. Additionally, advantages limitations both ex discussed. Finally, future proposed, aimed at constructing structure–stability relationships guiding design more stable SACs.

Язык: Английский

Процитировано

4
Selective Adsorption-Catalysis Sites of Lithium Polysulfides Induced by the Competition between Spin Polarization and Electronegativity in High-Entropy Alloy Electrocatalysts DOI
Boyu Li, Huan Wang,

Yanlei Shen

и другие.

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Март 18, 2025

High-entropy alloy (HEA) electrocatalysts have attracted increasing attention for improving sulfur reaction kinetics and anchoring lithium polysulfides (LiPSs) in lithium-sulfur batteries (LSBs). However, fundamentally understanding the relationship between components of HEAs adsorption catalysis LiPSs remains a challenge. Here, FeCoNiMnRu are employed as model to first disclose selective adsorption-catalysis effect LiPSs, induced by competition spin polarization electronegativity Ni−Co−Ru sites HEAs. By correlating electron structure, we find that high-electronegativity Ru induce transfer from Co sites, generating local delocalization, while Ni adopt high-spin state. Specifically, with stronger Ni−S covalency can sustainably anchor electron-delocalized Co−Ru function better LiPS conversion. Consequently, benefiting LSBs FeCoNiMnRu/CNF interlayers deliver exceptional cycling performance (0.06% per cycle over 500 cycles at 1 C, an outstanding areal capacity 11.2 mAh cm−2 0.1 C). This work offers key insights extending enable high-performance LSBs.

Язык: Английский

Процитировано

0
Revealing the influence of surface structure on the fabrication of Pt-based alloy nanowires induced by H2 and their electrocatalytic upcycling of polyethylene terephthalate DOI
Yaming Liu, Xinyu Li, Yutian Zhao

и другие.

Applied Catalysis B Environment and Energy, Год журнала: 2025, Номер unknown, С. 125353 - 125353

Опубликована: Апрель 1, 2025

Язык: Английский

Процитировано

0
Enhanced Structural Homogeneity and Conductivity in (Nb0.32V0.17Mo0.17W0.17Co0.17)2O4 High-Entropy Oxide Electrodes via Graphene Quantum Dot Integration and Super-Exchange Interaction for High-Performance Supercapacitors DOI
Xiaoshan Li, Li Ruiyi,

Shen Yirui

и другие.

Journal of Alloys and Compounds, Год журнала: 2025, Номер unknown, С. 180248 - 180248

Опубликована: Апрель 1, 2025

Язык: Английский

Процитировано

0
Controllable moderate-temperature synthesis of high entropy PtIrCoNixFe1-x for superior hydrogen evolution reaction DOI
Abrar Ahmad,

A.S. Lakshmanan,

Ruiming Zheng

и другие.

International Journal of Hydrogen Energy, Год журнала: 2025, Номер 125, С. 48 - 55

Опубликована: Апрель 8, 2025

Язык: Английский

Процитировано

0
Pulsed electrosynthesis of glycolic acid through polyethylene terephthalate upcycling over a mesoporous PdCu catalyst DOI Creative Commons

Shu Han,

Lizhi Sun,

Dongping Fan

и другие.

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Апрель 10, 2025

Electrocatalytic upcycling of polyethylene terephthalate (PET) plastics offers a promising and sustainable route that not only addresses serious waste pollution but also produces high value-added chemicals. Despite some important achievements, their activity selectivity have been slower than needed. In this work, pulsed electrocatalysis is employed to engineer chemisorption properties on lamellar mesoporous PdCu (LM-PdCu) catalyst, which delivers stability for selective electrosynthesis glycolic acid (GA) from PET under ambient conditions. LM-PdCu synthesized by in situ nucleation attachment strategy along assembled templates, whose stacked morphology structure kinetically accelerate desorption GA expose fresh active sites metal catalysts continuous at mode. This thus Faraday efficiency >92% wide potential windows, yield rate reaching 0.475 mmol cm-2 h-1, cycling exceeding 20 cycles electrocatalytic upcycling. Moreover, discloses good performance scaled-up real bottle plastics. work presents chemicals through various feedstocks.

Язык: Английский

Процитировано

0
Thiol‐Modulation‐Induced Mesoporous Nanosheets with an Alloy/Intermetallic Heterophase for Efficient Electrochemical Ethylene Glycol‐Assisted Water Splitting DOI Creative Commons

Fukai Feng,

Sumei Han,

Chaoqun Ma

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 25, 2025

Abstract Ligand modification has been widely utilized to tune the coordination environment of active sites in noble metal‐based electrocatalysts enhance their catalytic activity and selectivity. However, ligand‐induced structure transition catalyst its effect on performance is not clear. In this study, a thiol strategy developed prepare sulfur‐capped mesoporous PtPbBi nanosheets (S‐PtPbBi MNSs) with an alloy/intermetallic compound heterophase inhomogeneous tensile strain (≈3%). The obtained S‐PtPbBi MNSs exhibit excellent electrocatalytic for ethylene glycol oxidation reaction (EGOR), achieving Faradic efficiency up 92% converting EG glycolic acid. EG‐assisted electrochemical water splitting, only require low cell voltage 0.60 V achieve current density 10 mA cm −2 . anion exchange membrane electrolyzer utilizing can drive 500 at 1.63 V, along exceptional stability 200 h. Density functional theory calculations reveal that facilitates adsorption reactants enhances electron transfer between key intermediate. This work provides deep insights into ligand modification‐induced construction novel catalysts creates new opportunities small molecule‐assisted splitting efficient production hydrogen.

Язык: Английский

Процитировано

0