Journal of Colloid and Interface Science最新文献

{"title":"ABAQUS finite element analysis on the mechanical properties of bilayer nanocomposite hydrogels","authors":"Ji Zhang ,&nbsp;Hui Guo ,&nbsp;Sharel Peisan E. ,&nbsp;Yi Qian ,&nbsp;Zhongnan Wang","doi":"10.1016/j.jcis.2025.138279","DOIUrl":"10.1016/j.jcis.2025.138279","url":null,"abstract":"<div><div>Hydrogels have emerged as a key research focus in biomimetic materials due to their unique solid-liquid structures and excellent biocompatibility. As a potential alternative material of human cartilage, hydrogels must exhibit both high mechanical strength and superior lubrication properties. In previous studies, we synthesized bilayer nanocomposite hydrogels incorporating dopamine-modified nanoparticles, achieving outstanding compress strength (10.86 MPa) and excellent lubrication capabilities (μ = 0.01) under high load (9 MPa). Although various experimental techniques are currently to measure the tensile strength of high water-content hydrogels and their surface strain state under shear conditions, establishing material models based on experimental data can reduce errors caused by compositional differences. It also serves as an effective approach to predict the mechanical behavior of materials. We employed ABAQUS finite element analysis (FEA) to simulate the mechanical behavior of bilayer nanocomposite hydrogels under compression and shear loads, revealing a strong strain dependency. The mechanical behavior of hydrogels can be described by Mooney-Rivlin under small deformations (strain &lt;30 %), whereas Ogden-3 models more consistent with its stress variation trend under large deformations. Moreover, the enhanced anti-shear deformation lag of the surface-layer hydrogel contributes to reduced friction loss energy, facilitating the formation of a stable hydration layer on its surface, and thus maintain a low and stable friction coefficient (μ ∼ 0.01). These results underscore the potential of finite element simulations for systematically investigating the mechanical and lubrication properties of bilayer nanocomposite hydrogels. This study provides valuable insights into optimizing mechanical-lubrication synergy, paving the way for next-generation cartilage-mimetic hydrogel applications in biomedical engineering.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"699 ","pages":"Article 138279"},"PeriodicalIF":9.4,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144510822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A thin 3D alloy-type anode enabled by sluggish thermodynamics for spring-free Lithium metal batteries","authors":"Guohong Wang ,&nbsp;Wenhan Zhang ,&nbsp;Hongxiang Wang,&nbsp;Jie Hu,&nbsp;Huayu Huang,&nbsp;Xingke Cai,&nbsp;Fude Liu","doi":"10.1016/j.jcis.2025.138266","DOIUrl":"10.1016/j.jcis.2025.138266","url":null,"abstract":"<div><div>Lithium metal batteries (LMBs) offer a promising solution to next-generation energy devices. Yet, the low coulombic efficiency (CE) issue compromises the battery performance, and lithium metal's low utilization causes a waste of resources. Herein, we design a novel thin Li/LiNi₃@NF alloy-type anode by sluggish thermodynamics. With negative Gibbs free energy and a low nickel composition phase, the Li/LiNi₃@NF anode is simultaneously achieved, acting as both anode and spring in spring-free LMBs (SFLMBs). Such SFLMBs exhibit lower volume and mass compared to conventional cells. Moreover, the Li/LiNi₃@NF anode demonstrates hierarchy electrochemistry at the stripping/plating process, showcasing a low 16 mV voltage hysteresis. When coupled with LiFePO₄ (LFP) cathode, the SFLMB with Li/LiNi₃@NF retains 86.4 % capacity for 300 cycles at a 1C rate.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"699 ","pages":"Article 138266"},"PeriodicalIF":9.4,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144480431","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dual-regulated cascade catalysis via spatial synergy and electronic coupling for efficient oxygen reduction reaction","authors":"Yuemei Liu,&nbsp;Junhong Ma,&nbsp;Ziyang Meng,&nbsp;Chaoyun Ma,&nbsp;Rui Xu","doi":"10.1016/j.jcis.2025.138212","DOIUrl":"10.1016/j.jcis.2025.138212","url":null,"abstract":"<div><div>Fe-NC materials have emerged as promising alternatives to platinum-based catalysts for oxygen reduction reaction (ORR). Yet, their performance remains constrained by the intrinsic linear scaling relationship of single-active-site configuration, leading to sluggish kinetics. Herein, a feasible dual-site cascade electrocatalyst was synthesized via a simple one-step pyrolysis, featuring in-situ formed uniformly dispersed ZnS nanoparticles synergistically integrated with Fe<img>N₄-enriched N, S-codoped carbon matrices (denoted as ZnS-Fe-NSC). Comprehensive experimental and theoretical investigations reveal a sophisticated cascade mechanism: The activation of oxygen preferentially occur at the ZnS sites, facilitating rapid generation and migration of the *OOH intermediate, while adjacent Fe<img>N₄ centers with optimized electronic structures effectively reduce energy barriers for subsequent electron transfer steps. This spatial-electronic dual regulation successfully reconstructs the conventional single-site reaction pathway, achieving remarkable performance enhancements. The optimized catalyst demonstrates an exceptional half-wave potential of 0.96 V (120 mV improvement over single-site counterparts) with near-theoretical four-electron selectivity. And the kinetic current density at 0.8 V reaches 44.52 mA cm⁻², 5.6 times that of commercial Pt/C. When applied in zinc-air batteries, the ZnS-Fe-NSC-based air cathode achieves a peak power density of 193 mW cm⁻² and sustains stable operation for over 200 h. this work not only overcomes the performance limitations of Fe-NC catalysts but also establishes a universal framework for designing multi-component ORR catalysts through spatial synergy and electronic coupling effects, providing critical insights for developing high-efficiency non-precious metal electrocatalysts</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"699 ","pages":"Article 138212"},"PeriodicalIF":9.4,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144501359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Light-trapping superhydrophobic coatings with switchable wettability to solve low-temperature anti-icing/deicing and high-temperature overheating problems on surfaces","authors":"Fang Yao,&nbsp;Jue Wei,&nbsp;Yujie Xu,&nbsp;Hao Tu,&nbsp;Min Huang,&nbsp;Qifeng Tang,&nbsp;Shuai Zhao,&nbsp;Jian Wang","doi":"10.1016/j.jcis.2025.138275","DOIUrl":"10.1016/j.jcis.2025.138275","url":null,"abstract":"<div><div>Excessive ice accumulation can cause significant economic losses and even threaten life safety. Therefore, it is crucial to explore integrated strategies for ice prevention and deicing in order to prevent these losses. In this study, a fluorine-free light-trapping superhydrophobic anti-icing/deicing coating with wettability conversion was prepared using modified TiO₂ and multi-walled carbon nanotubes (MWCNTs). The modified TiO₂ nanoparticles and MWCNTs endowed the coating surface with micro/nano rough structures and photothermal properties. The prepared coating has excellent superhydrophobic properties with a contact angle (CA) of 161.5°, which allows the water droplet to delay freezing for about 19 times longer than that of the bare substrate. Furthermore, even at −15 °C, the droplet can still bounce on the coating surface, preventing water accumulation and freezing. Under simulated solar radiation, the frozen water droplet on the surface can be rapidly melted within 283 s, thanks to the exceptional multiscale topography and outstanding photothermal performance of the coating surface. Surprisingly, the surface can realize a superhydrophobic to hydrophilic wettability transition after 30 min of UV irradiation, and the superhydrophobicity can be restored after stopping UV irradiation, based on which the idea of controlling the surface temperature by adjusting the wettability of the coating has been proposed, which is expected to solve the problem of overheating of the surface due to high temperatures.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"699 ","pages":"Article 138275"},"PeriodicalIF":9.4,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144480420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrospun perovskite quantum dots-based Janus microribbons film with white light and multicolor luminescence for optical data storage and anti-counterfeiting","authors":"Xintong Huo ,&nbsp;Yunrui Xie ,&nbsp;Yaolin Hu ,&nbsp;Zheng Wang ,&nbsp;Yuqi Sheng ,&nbsp;Haina Qi ,&nbsp;Hong Shao ,&nbsp;Qianli Ma ,&nbsp;Wensheng Yu ,&nbsp;Xiangting Dong","doi":"10.1016/j.jcis.2025.138276","DOIUrl":"10.1016/j.jcis.2025.138276","url":null,"abstract":"<div><div>In order to attain white light or multicolor luminescence of perovskite quantum dots (PQDs) materials, the prevalent method involves directly blending PQDs with different type and composition of halogen anions. However, this method allows uncontrolled halogen anion exchange between the different PQDs, thereby leading to alterations in the final fluorescence color of the material. To address this problem, we creatively design and fabricate a PQDs-based Janus microribbons film (Janus-MRF) with white light emission and multicolor fluorescence under multi-wavelength stimulation by a parallel electrospinning. [CsPbCl_1.5Br_1.5/Eu(BA)₃phen/PS]//[CsPbBr₃/Eu(BA)₃phen/PS] (BA = <!--> <!-->benzoate radical, phen = 1,10-phenanthroline, PS = polystyrene) Janus microribbon (Janus-MR) serves as fundamental structural unit of Janus-MRF, CsPbCl_1.5Br_1.5 and CsPbBr₃ PQDs respectively provide blue and green fluorescence, and Eu(BA)₃phen offers red fluorescence. The introduction of Janus structure in Janus-MR allows the interior of the Janus-MR to form two independent microscopic domains, confining CsPbCl_1.5Br_1.5 PQDs and CsPbBr₃ PQDs to their respective domains and avoiding halogen anion exchange caused by direct contact between the two PQDs and obtaining superior and designed macroscopic fluorescence. Owing to the disparity in optimal excitation wavelengths between PQDs and Eu(BA)₃phen, white light and multicolor emissions of Janus-MRF can be achieved under multi-wavelength stimulation. Furthermore, the fluorescent color of Janus-MRF is sensitive to temperature changes. As an applicative demonstration of Janus-MRF, different sub-barcodes are obtained by using the identifiable fluorescence spectra emitted by Janus-MRF under multi-wavelength stimulation and the sensitivity of fluorescent color of Janus-MRF to temperature changes, and further these sub-barcodes are integrated into the large photonic barcodes encoding library for high-volume data storage and advanced anti-counterfeiting applications. This work provides a novel idea and strategy for advancing fabrication and application of materials based on PQDs.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"699 ","pages":"Article 138276"},"PeriodicalIF":9.4,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144501568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ferrocene-based metal-organic frameworks with dual redox sites for advanced sodium-ion battery anodes","authors":"Yujin Mou ,&nbsp;Hongyan Yang ,&nbsp;Yunjie Lang ,&nbsp;Lanju Sun ,&nbsp;Xiao Wang ,&nbsp;Wei-Qiao Deng ,&nbsp;Hao Wu","doi":"10.1016/j.jcis.2025.138269","DOIUrl":"10.1016/j.jcis.2025.138269","url":null,"abstract":"<div><div>Conventional sodium-ion battery (SIB) anodes are still lagging in capacity, reaction kinetics, and cycling stability, which motivates the development of high-performance anodes for advancing grid-scale energy storage. Herein, we report a ferrocene-based metal-organic framework (NF-MOF) anode with dual redox sites, synthesized on carbon cloth (CC) via a facile solvothermal method. This innovative design yields a binder-free NF-MOF@CC anode that integrates the redox activity of ferrocene (Fc/Fc⁺) with the Ni⁰/Ni²⁺ redox couple. <!--> <!-->The prudent design ensures intimate interfacial contact between NF-MOF and CC, eliminating binder-induced resistance and accommodating Na⁺-induced strain through hierarchical porosity. As a result, NF-MOF@CC shows rapid capacitive-dominated Na⁺ storage and high diffusion coefficients, delivering a high reversible capacity of 705 mAh g⁻¹ at 0.1 A g⁻¹ and achieving a 3.9-time higher capacity than its powder counterpart. Ex situ structural and simulation studies confirm reversible Ni and Fe redox reactions with minimized lattice distortion, while electrostatic potential mapping identifies optimal Na⁺ adsorption sites. Moreover, full-cell configurations paired with Na₃V₂(PO₄)₃ or NaNiFeMn₂O₆ cathodes achieve remarkable cyclability, retaining 95.1 % (200th cycle) and 95.3 % (500th cycle) capacity, respectively, alongside high energy densities (310 Wh kg⁻¹ at 3160 W kg⁻¹). This work pioneers a dual-redox MOF design strategy, offering a universal platform for robust, high-capacity SIB anodes.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"699 ","pages":"Article 138269"},"PeriodicalIF":9.4,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144491096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"One-step production of structured metal and associated oxidizing nanoparticles using picosecond pulse trains: a novel surface for structural color","authors":"Aifei Pan ,&nbsp;Wenjun Wang ,&nbsp;Yang Hui ,&nbsp;Xuesong Mei ,&nbsp;Chenyong Li ,&nbsp;Yong Xia ,&nbsp;Wenqiang Duan ,&nbsp;Bin Liu","doi":"10.1016/j.jcis.2025.138274","DOIUrl":"10.1016/j.jcis.2025.138274","url":null,"abstract":"<div><div>This paper presents a novel approach to obtain the structured metal and its associated oxidizing nanoparticles for two types of structural color. The oxidation and surface structuring are governed by thermalization generated by picosecond pulse trains. To begin with, simulation findings indicated that both the layer consisting of pure TiO₂ nanoparticles and the composite structures created by the interaction of TiO₂ with picosecond laser-induced surface periodic structures on titanium (referred to as Ti LIPSSs) exhibited a similar color shift to that of the pure TiO₂ film. A consistent colorful surface across a broad angle is achieved with the TiO₂ nanoparticles covering on the textured Ti surface characterized by laser-induced microstructures. Subsequently, to achieve the deposition of TiO₂ nanoparticles on the surface of Ti LIPSSs, a pulse energy exceeding the threshold for laser-induced processing was utilized. The results indicate that the colorful surface maintains consistency at wide angles under indoor illumination, which is markedly different from that of pure Ti LIPSSs. Nonetheless, under parallel light irradiation, the surface color is only responsive to the angle of incidence. These structural colors might be employed for concealing information.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"699 ","pages":"Article 138274"},"PeriodicalIF":9.4,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144514142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of surface charge and rigidity of liposomes on their interaction with gold nanoparticles","authors":"Ghazaleh Mazaheri Tehrani ,&nbsp;Constantina Sofroniou ,&nbsp;Malika Singh ,&nbsp;Najet Mahmoudi ,&nbsp;Steven Huband ,&nbsp;Owen Davies ,&nbsp;Ignacio Martin-Fabiani","doi":"10.1016/j.jcis.2025.138267","DOIUrl":"10.1016/j.jcis.2025.138267","url":null,"abstract":"<div><div>In this study, we advance the understanding of the interactions between liposomes and gold nanoparticles (AuNPs), aiming to provide a scientific foundation for their potential application in nanomedicine, diagnostics, biosensing, and others. We tune the composition of the liposomes, using blends of 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) or 2-dioleoyl-sn-glycero-3-phosphocholine (DOPC) lipids with anionic (1,2-dioleoyl-sn-glycero-3-phospho-<span>l</span>-serine, DOPS) or cationic (1,2-dioleoyl-3-trimethylammonium-propane, DOTAP) lipids, to investigate the effect of surface charge and membrane rigidity on their interactions with AuNPs. Via a combination of spectroscopy, microscopy and scattering techniques, we shed light on the state of AuNPs aggregation in these systems as well as the nature and strength of liposome-AuNP and AuNP-AuNP interactions. Notably, through small-angle neutron scattering (SANS) experiments we demonstrate alterations to the lipid membranes induced by AuNPs, leading to liposome shrinkage and the formation of multilamellar liposomes in two of the systems.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"699 ","pages":"Article 138267"},"PeriodicalIF":9.4,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144523551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-valent nickel oxyhydroxides self-derived through a low-temperature thermochemical strategy for an efficient oxygen evolution reaction","authors":"Zhichao Wang ,&nbsp;Junjie Feng ,&nbsp;Si Chen ,&nbsp;Guosheng Yang ,&nbsp;Jie Wang ,&nbsp;Tiandong Qiu ,&nbsp;Chuncheng Li ,&nbsp;Xiangyu He ,&nbsp;Yufeng Zhang ,&nbsp;Wenli Huang ,&nbsp;Ming Li ,&nbsp;Yachao Zhu ,&nbsp;Dan Hu ,&nbsp;Jie Deng","doi":"10.1016/j.jcis.2025.138243","DOIUrl":"10.1016/j.jcis.2025.138243","url":null,"abstract":"<div><div>High-valent Ni(Fe) metals are considered practical electroactive phases that can accelerate reaction kinetics and exhibit high inherent reactivity during the alkaline oxygen evolution reaction (OER). However, their formation and stabilisation are thermodynamically unfavourable. Oxyanions possess a unique polyanionic motif and suitable electronegativity, enabling them to share more dispersed electrons with adjacent metal cations and thereby balance the strong positive electronic fields of the metal cations. This characteristic offers a more favourable approach to modulate surface self-reconfiguration compared with conventional metal cation or non-metal anion modifications. Based on this, herein, an oxysulfide anion regulation method is proposed to obtain stable high-valent Ni(Fe) phases. The oxysulfide anion can be directly pre-anchored onto a Ni(Fe) oxyhydroxide sea-urchin array catalyst by simply treating the commercial NiFe foam in a low-temperature reaction medium of ammonium persulfate and water. The pre-bonded oxysulfide can effectively tailor the electronic energy level of electroactive sites (<em>e.g.</em> oxidation-state engineering, band gap narrowing, metal–O covalency and metal d-band centre), thereby altering the surface charge transfer rate to further enhance the adsorption, conversion and desorption of OER intermediates. Ultimately, the OER kinetics is accelerated, and the persistent *OH–*OOH scaling relationship can be overcome to reduce the overpotentials. The final catalyst achieves superior OER performance with a low overpotential of 219 mV at 10 mA cm⁻², rapid kinetics (54.1 mV/dec) and prominent durability of &gt;693 h to maintain the initial current density of 100 mA cm⁻². Informative insights into both simple low-temperature thermochemical oxysulfide modulation protocol and sulfate-tuned roles in improving OER activity could broaden the understanding of the oxyanion effect in electrocatalysis and provide a rational approach for designing cutting-edge electrocatalysts for practical applications.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"699 ","pages":"Article 138243"},"PeriodicalIF":9.4,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144491173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Augmented electronic metal-support interaction of single-atomic NiNC supported PtRu nanoalloys and their boosted activity and durability for hydrogen evolution and oxygen reduction reactions in both alkaline and acidic media","authors":"Min Hong ,&nbsp;Jianhang Nie ,&nbsp;Xiaohua Zhang ,&nbsp;Wenjing Zhang ,&nbsp;Cuicui Du ,&nbsp;Jinhua Chen","doi":"10.1016/j.jcis.2025.138271","DOIUrl":"10.1016/j.jcis.2025.138271","url":null,"abstract":"<div><div>PtRu nanoalloys anchored on conductive carbon supports have attracted attention for their promising hydrogen evolution reaction (HER) and oxygen reduction reaction (ORR) electrocatalytic activity, holding significant promising applications in hydrogen fuel cells, it is still challenging to develop highly efficient and durable catalysts for catalyzing HER/ORR in both alkaline and acidic media. However, it is still challenging to develop highly active and durable catalysts toward HER and ORR in both alkaline and acidic media. In this work, PtRu nanoalloys are uniformly anchored onto the surface of Ni single atoms embedded porous nitrogen carbon (NiNC) via a simple annealing approach. PtRu-NiNC exhibits a remarkable HER activity with overpotentials of only 1.5 mV and 26 mV at 10 mA cm⁻² in acidic and alkaline media, respectively, outperforming PtRu-NC. Meanwhile, PtRu-NiNC also shows excellent ORR performance with more positive half-wave potentials (E_1/2) (0.865 V in acidic media and 0.810 V in alkaline media) compared with these of PtRu-NC. Additionally, PtRu-NiNC exhibits a long-time stability for HER/ORR in both acidic and alkaline media. With HER in acid condition as a prototype reaction, detailed spectroscopic characterization and density functional theory (DFT) calculation demonstrate that Ni single atoms augmented EMSI between PtRu nanoalloys and support, which promotes the electronic reconstruction of PtRu nanoalloys and regulates the d-band center of Pt and Ru away from Fermi level, thus optimizing the moderate adsorption/desorption of H* to increase HER activity. Moreover, the enhanced EMSI in PtRu-NiNC can effectively prevent the migration and agglomeration of PtRu nanoalloys in acidic environment, thus stabilizing PtRu nanoalloys within PtRu-NiNC. The recognition that single-atomic Ni incorporated into NC support induces enhanced EMSI, thus endowing PtRu-NiNC with outstanding activity and durability for bifunctional HER/ORR electrocatlysis, provides a practical strategy for developing hydrogen fuel cells.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"699 ","pages":"Article 138271"},"PeriodicalIF":9.4,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144491175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}