化学最新文献

{"title":"The total antioxidant capacity of fruit was determined by TAMzyme pseudo-peroxidase activity colorimetry.","authors":"Xinli Guo, Shuangshuang Yan, Nishan Jin, Wenbin Zhong, Dongying An, Murui Ying, Yutian Zhou, Yudong Wu, Xin Li, Yang Zhang","doi":"10.1016/j.talanta.2025.128517","DOIUrl":"10.1016/j.talanta.2025.128517","url":null,"abstract":"<p><p>The total antioxidant capacity (TAC) of fruits is a key indicator for measuring their quality and nutritional value. Traditional detection methods are time-consuming and cumbersome, failing to meet the requirements for rapid detection. In this study, a novel triple metal organic framework nanozyme (TAMzyme) with superior peroxidase-like (POD-like) activity is constructed for colorimetric detection of TAC. Owing to the Fe, Co, Ni doping and unique long spindle structures, the TAMzyme possesses more surface active oxygen species, negative surface charges and rapid mass transport, thus resulting in higher catalytic activity and reaction rate. Thanks to the remarkable peroxidase-like activity, the antioxidant capacity of ascorbic acid (AA), cysteine (Cys), glutathione (Glu), and gallic acid (GA) was evaluated with a detection limit between 0.54 and 1.58 μM. Antioxidant capacity was quantified in μM Trolox Equivalent (TE), with Trolox as the standard reference compound. The sensor accurately determined the TAC in kiwi fruit (194.97 ± 2.73 μM TE) and oranges (205.10 ± 3.85 μM TE), aligning with results from a standardized ABTS kit. This study presents a rapid, cost-effective, and straightforward method for quantifying TAC in complex food matrices.</p>","PeriodicalId":435,"journal":{"name":"Talanta","volume":"296 ","pages":"128517"},"PeriodicalIF":6.1,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144558729","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":"Fast and portable single-sensor electronic nose for accurate quality assessment of extra virgin olive oil using a temperature-modulated generic gas sensor.","authors":"Amir Amini, Hossein Gholami Anjileh, Hooman Amirfaridi","doi":"10.1016/j.talanta.2025.128490","DOIUrl":"10.1016/j.talanta.2025.128490","url":null,"abstract":"<p><p>Preserving the quality of extra virgin olive oil (EVOO), regarded as the best quality of olive oil categories in compliance with the International Olive Council (IOC), is mainly impeded by blending it with inferior or alternative edible oils. A portable, accurate, and rapid electronic nose was developed to assess the purity of EVOO blended with small amounts of virgin olive oil (VOO) in five different relative proportions. A thermal shock-induced (TSI) SnO₂ gas sensor was employed, obviating the necessity for a sensor array and eliminating multi-dimensional drift. The discriminative response time was optimized to 3.2 s, with consistent repeatability over three-month experiments. After preprocessing, feature selection was performed, followed by a combination of principal component analysis (PCA) and linear discriminant analysis (LDA), which effectively segregated olive oil clusters in 3D feature space. A k-NN classifier utilizing Euclidean distance achieved an exceptional 98 % accuracy for k = 7 in identifying the five binary proportions of EVOO and VOO, proving the capability of the designed e-nose to detect the quantity of complex odor mixtures. The setup's accuracy was subsequently assessed using the 25 validation data, yielding a precision of 92 %. The successful classification rate of the designed e-nose was attributed to the lower oxidative stability of pure VOO compared to pure EVOO, which led to the faster formation and decomposition of volatile organic compounds (VOCs) of VOO on the sensing pellet of the TSI gas sensor. This innovative e-nose shows great promise for industrial applications in recognizing the mixtures of complex odors.</p>","PeriodicalId":435,"journal":{"name":"Talanta","volume":"296 ","pages":"128490"},"PeriodicalIF":6.1,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144525852","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":"Coral reef-inspired hierarchical channel electrolyte: LATP framework-ZrO₂ triggering activation of amorphous fast-ion channels in PVDF-HFP.","authors":"Zihao Dang, Ao Li, Lin Wu, Tao Huang, Baoguo Zhang, Chenglin Wei, Yongkang Xu, Pinghui Xu, Dan Xiong, Rongsheng Chen, Ya Hu","doi":"10.1016/j.jcis.2025.138607","DOIUrl":"10.1016/j.jcis.2025.138607","url":null,"abstract":"<p><p>To cope with the demand for high-safe lithium-ion batteries, this study developed a new PVDF-HFP/LiTFSI/LATP/ZrO₂ (PHLZ) composite solid electrolyte with coral reef-type hierarchical channel structure. This electrolyte integrates the advantages of the NASICON fast ion conductor Li₁.₃Al₀.₃Ti₁.₇(PO₄)₃ (LATP) framework and the multifunctional inducer ZrO₂ through a dual-filler synergistic strategy. LATP large particles construct a continuous three-dimensional lithium ion rapid transmission main channel and promote LiTFSI dissociation through the surface Lewis acid site. ZrO₂ nanoparticles effectively passivate the LATP surface to inhibit reduction and improve their dispersion, and form hydrogen bonds with the -CF₂-group of PVDF-HFP through the surface hydroxyl group, trigger activation of the fast ion channel in the amorphous region of the polymer and inhibit crystallization. The PHLZ-2 electrolyte with an optimized ratio (LATP:ZrO₂ = 2:1) exhibits excellent comprehensive performance, with ion conductivity up to 1.76 × 10^-3 S cm^-1 at 60 °C, lithium ion migration number up to 0.76, wide electrochemical window (>4.74 V vs. Li⁺/Li), significantly improved thermal stability and flame retardant (3 s self-extinguishing), and excellent lithium deposition/peel stability. When applied to Fe₃O₄/phosphorus doped graphene oxide (FPG) anode system, the FPG//PHLZ-2//Li half-cell showed high rate performance (1101.65 mAh g^-1 at 3 A/g) and long cycle life (1225.19 mAh g^-1 after 300 times at 1.10 mA cm^-2); the assembled FPG//PHLZ-2//LFP full battery also showed high capacity and excellent cycle stability. This research provides new ideas for designing high-performance and safe composite solid electrolytes.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"700 Pt 3","pages":"138607"},"PeriodicalIF":9.7,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144815488","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":"Cauliflower-like manganese oxide@carbon cathode with structural and interfacial dual optimization for ultrastable zinc-ion batteries.","authors":"Yu Huang, Jianjiang Mao, Guoxiu Wang, Yanzhen He, Fei Cheng","doi":"10.1016/j.jcis.2025.138539","DOIUrl":"10.1016/j.jcis.2025.138539","url":null,"abstract":"<p><p>Manganese-based oxide cathode materials have attracted significant attention in aqueous zinc-ion batteries (AZIBs) due to their high energy density and operating voltage, but their practical applications are limited by the structural instability caused by manganese dissolution and sluggish kinetics resulting from poor electrical conductivity. Herein, a cauliflower-like MnO/carbon composite (NMOC) with hierarchical porous architecture is designed and fabricated through NaCl phase-dynamic regulation strategy by using a cost-effective manganese tartrate as the precursor. The dynamic NaCl template not only directs the self-assembly of MnO nanoparticles into three-dimensional interconnected porous frameworks but also facilitates the in-situ formation of an ultrathin (∼2 nm) carbon coating layer. As a high-performance cathode material for AZIBs, this unique structural configuration of NMOC establishes abundant Zn²⁺/H⁺ diffusion pathways, exposes high-density active sites, and significantly enhances reaction kinetics. Meanwhile, the strengthened Mn-O-C interfacial coupling and carbon confinement effect collectively suppress Mn dissolution, mitigate volume variation, and promote charge transfer dynamics. As a result, the NMOC cathode delivers an exceptional capacity of 561 mAh g^-1 at 0.2 A g^-1 and demonstrates ultra-stable cycling performance with 190 mAh g^-1 retained after 2000 cycles at 2 A g^-1 and nearly 100 % capacity retention (127 mAh g^-1) after 2500 cycles at 4 A g^-1. Furthermore, the constructed flexible cells demonstrated excellent mechanical and electrochemical properties. This work offers new insights into the interfacial modulation and kinetic optimization of manganese-based oxides in next-generation energy storage systems.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"700 Pt 3","pages":"138539"},"PeriodicalIF":9.7,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144797781","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":"Evaporation-coded fluorescent gradients in supramolecular gels displaying aggregation-induced emission: A dynamic route to encryption and anti-counterfeiting.","authors":"Binbin Zhang, Qingyang Zhang, Xiheng Yuan, Zhenyu Lu, Yijun Zhang, Yujie Wang, Guangyue Bai","doi":"10.1016/j.jcis.2025.138643","DOIUrl":"10.1016/j.jcis.2025.138643","url":null,"abstract":"<p><p>Supramolecular gels have been widely explored as functional materials; however, their performance often degrades upon solvent evaporation. Although many strategies seek to mitigate this instability, few have leveraged solvent loss as a functional driver. Herein, we present an aggregation-induced emission (AIE)-active supramolecular gel that exploits solvent evaporation for dynamic information encryption and anti-counterfeiting. In this multicomponent co-assembly, a phenylalanine-functionalized 1,3,5-benzenetricarboxamide derivative (C₃-Phe), sodium hyaluronate (HA), and Al³⁺ ions together immobilize the AIE luminogen 4,4'-(1,2-diphenylethene-1,2-diyl)dibenzoic acid (TPE-CA), enhancing its quantum yield from 1.91 % to 62.43 %. The introduction of fluorescent dyes 4,7-di(2-thienyl)-2,1,3-benzothiadiazole (DBT) and rhodamine B (RhB) further establishes a cascade Förster resonance energy transfer (FRET) platform to enable tunable multicolor emission. The controlled evaporation of water drives time-dependent fluorescence chromatic shifts and quenching, which are fully reversible upon water replenishment. This evaporation-coded reversible fluorescence behavior underpins a 4D encryption and anti-counterfeiting platform that features multistage authentication and self-erasing information, thereby offering a new paradigm for adaptive smart materials.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"700 Pt 3","pages":"138643"},"PeriodicalIF":9.7,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144803155","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":"Oxygen vacancy-rich CoSn(OH)₆/FeS₂ heterostructure-based microneedles for combinatorial cancer therapy via activation of ferroptosis and apoptosis.","authors":"Qing Zhang, Jian Jiang, Tingting Hu, Mengshu Xu, Xueyan Zhang, Chunyu Yang, Zhuoran Yang, Wei Guo","doi":"10.1016/j.jcis.2025.138558","DOIUrl":"10.1016/j.jcis.2025.138558","url":null,"abstract":"<p><p>Resistance to apoptosis-based cancer therapies severely limits treatment efficacy. Ferroptosis, a distinct form of regulated cell death driven by lipid peroxidation, offers a promising alternative to overcome such resistance. Herein, we developed an innovative microneedle patch system (CFA-MN) incorporating an oxygen vacancy-rich hollow CoSn(OH)₆/FeS₂ (CF) heterostructure, combined with the alkyl radical initiator 1,2-bis(2-(4,5-dihydro-1Himidazol-2-yl)propan-2-yl) diazene dihydrochloride, to achieve cooperative apoptosis-ferroptosis cancer therapy. The CF heterostructure, synthesized via alkaline etching and solvothermal methods, exhibited abundant oxygen vacancy, enhancing reactive oxygen species generation under 808 nm laser irradiation. In the tumor microenvironment, FeS₂ facilitated controlled H₂S release, inhibiting epithelial-mesenchymal transition and promoting apoptosis. Concurrently, Fe²⁺-mediated Fenton reactions led to lipid peroxide accumulation, triggering ferroptosis. The CFA-MN patch exhibited robust mechanical strength and rapid dissolution for precise delivery and controlled release. In vitro and in vivo results demonstrated significant tumor inhibition through combined apoptosis and ferroptosis pathways. This work highlights the potential of CFA-MN as a multifunctional platform to overcome chemoresistance and improve breast cancer treatment outcomes.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"700 Pt 3","pages":"138558"},"PeriodicalIF":9.7,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144811483","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":"Mildly sulfurized metal-organic frameworks-derived nickel sulfide heterostructures as bifunctional catalysts for efficient water/seawater electrolysis.","authors":"Gaoshuang Zuo, Zhichao Li, Chao Wang, Li Guo, Yanzhong Wang","doi":"10.1016/j.jcis.2025.138647","DOIUrl":"10.1016/j.jcis.2025.138647","url":null,"abstract":"<p><p>The rational design of bifunctional electrocatalysts that simultaneously exhibit exceptional catalytic activity and retain the inherent merits of metal-organic frameworks (MOFs) for overall water electrolysis still presents a critical scientific challenge. Herein, we demonstrate the construction of nanoflower-like heterostructures composed of NiFe-TDC and Ni₃S₂ (denoted as Ni₃S₂@NiFe-TDC) on nickel foam substrates through a simple and mild room-temperature sulfurization strategy, serving as highly active dual-functional electrocatalysts for overall freshwater and seawater splitting. The as-prepared Ni₃S₂@NiFe-TDC-60 achieves 10 mA cm^-2 current density with the overpotentials of 81 and 244 mV in alkaline solution for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), respectively. Moreover, it also exhibits the remarkable catalytic performance in alkaline seawater, with HER and OER overpotentials as low as 98 and 267 mV at 10 mA cm^-2. Additionally, the assembled electrolysis cell with Ni₃S₂@NiFe-TDC-60 as both electrodes was able to operate continuously for at least 100 h at 10 mA cm^-2 with the voltages of 1.55 and 1.67 V in 1.0 M KOH and alkaline seawater, respectively, which demonstrated the excellent long-term durability. The outstanding catalytic activity of catalysts is attributed to the synergistic interplay between the heterointerface engineering and nanoflower-like architecture, which significantly boosts the catalytic efficiency, electrical conductivity and electron transfer kinetics. The paper offers innovative insights into rational engineering of MOF-derived bifunctional electrocatalysts through a rapid and facile synthetic strategy.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"700 Pt 3","pages":"138647"},"PeriodicalIF":9.7,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144820186","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":"Engineered surface oxidation of porous metal substrate for simultaneous enhancement of kinetics and durability in electrochemical hydrogen evolution reaction.","authors":"Kangmin Seo, Gahyeon Lee, Jihyun Ra, Hye Ri Kim, Sejin Im, Hyunseob Lim, Changhee Kim, Jong Hoon Joo","doi":"10.1016/j.jcis.2025.138624","DOIUrl":"10.1016/j.jcis.2025.138624","url":null,"abstract":"<p><p>This study presents an effective approach to enhancing the catalytic performance, long-term stability, and surface hydrophilicity of porous nickel (Ni) substrates for the hydrogen evolution reaction (HER) via controlled surface oxidation without additional catalysts. In this study, the Ni tape-cast substrate (Ni-TCS), fabricated through a tape-casting method followed by oxidation and reduction treatments, exhibited a large surface area and fine porosity, resulting in a significantly improved catalytic activity compared to conventional Ni foam. Through partial oxidation at temperatures ranging from 300 °C to 450 °C, a catalytically favorable nickel oxide (NiO) nano layer was produced directly on the Ni-TCS surface, enhancing the HER activity and stabilizing the NiO/Ni interface for durability. Additionally, the NiO nano layer rendered the electrode surface hydrophilic as confirmed through contact angle measurements, facilitating effective electrolyte contact and improving mass transport. The Ni-TCS electrode oxidized at 400 °C (Ni-TCS400) demonstrated the highest HER activity, sustaining excellent stability at 500 mA cm^-2 over 500 h. Ni-TCS400 exhibited lower kinetic and mass-transfer overpotentials than those of the Ni-TCS in an alkaline water electrolyzer (AWE) system, while a voltage of 1.81 V was required to achieve a current density of 0.4 A cm^-2. Overall, the partial oxidation strategy circumvents the use of binders or precursors, while enabling improved stability, simplified fabrication, and high catalytic activity, making it a promising approach for the development of durable, efficient AWE electrodes.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"700 Pt 3","pages":"138624"},"PeriodicalIF":9.7,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144797783","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":"Quantifying the critical micelle concentration of nonionic and ionic surfactants by self-consistent field theory.","authors":"Chao Duan, Mu Wang, Ahmad Ghobadi, David M Eike, Rui Wang","doi":"10.1016/j.jcis.2025.138592","DOIUrl":"10.1016/j.jcis.2025.138592","url":null,"abstract":"<p><strong>Hypothesis: </strong>Quantifying the critical micelle concentration (CMC) and understanding its relationship with both the intrinsic molecular structures and environmental conditions remains a great challenge because 1) models need to reflect detailed molecular structures and chemistry-specific interactions and 2) long-range electrostatic interactions need to be accurately treated to model ionic surfactants and capture their responses to a variety of salt effects. We propose to solve these challenges by developing a self-consistent field theory (SCFT) which is applicable to both nonionic and ionic surfactants. We perform calculations for the structure and free energy of individual micelles in a subvolume, where this information is then incorporated into the dilute solution thermodynamics for the study of CMC, micellar structure, and the kinetic pathway of micellization. The long-range electrostatic interactions are decoupled from the short-range van der Waals interactions and are explicitly treated in our theory. This enables us to study a variety of salt effects such as counterion binding, salt concentration dependence, and the specific ion effect.</p><p><strong>Theoretical calculations: </strong>We apply the theory to three types of commonly used surfactants: alkyl poly(oxyethylene) ether (C_mE_n), sodium dodecylsulfate (SDS), and sodium poly(oxyethylene) dodecylsulfate (SLES). We investigate the dependence of the micellar structure and CMC on both the intrinsic structure of the surfactants and the external salt effects such as the salt concentration and the specific-ion effect. We compare CMC predicted by our theory with experimental measurements reported in the literature.</p><p><strong>Findings: </strong>For alkyl poly(oxyethylene) ether (C_mE_n) surfactants, we predict a wide range of CMC from 10^-6 to 10^-2M as the composition parameters m and n are adjusted. For the ionic sodium dodecylsulfate (SDS) surfactant, we show a decrease of the CMC as the salt concentration increases and capture both the specific cation effect and the specific anion effect. Furthermore, for sodium poly(oxyethylene) dodecylsulfate (SLES) surfactants, we find a non-monotonic dependence of both the CMC and micelle size on the number of oxyethylene groups. Our theoretical predictions of CMC are in quantitative agreement with experimental data reported in the literature for all three types of surfactants, demonstrating the effectiveness and versatility of our theory.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"700 Pt 3","pages":"138592"},"PeriodicalIF":9.7,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144803097","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-engineering of sulfur, oxygen co-doping and defective carbon structure boosts highly efficient hydrogen peroxide electrosynthesis.","authors":"Junning Qian, Dian Yang, Yuting Jiang, Wei Liu, Xueyan Hou, Le Shi, Lin Zeng","doi":"10.1016/j.jcis.2025.138621","DOIUrl":"10.1016/j.jcis.2025.138621","url":null,"abstract":"<p><p>Utilizing the two-electron oxygen reduction reaction (2e^- ORR) for green hydrogen peroxide (H₂O₂) production offers a sustainable alternative to the traditional anthraquinone process. Metal-free carbon electrocatalysts have attracted significant attention due to their low cost and structural diversity. However, their advancement in 2e^- ORR has been severely hampered by the inefficient bulk production of H₂O₂. In this study, we report a dual-engineering strategy for enhancing H₂O₂ electroproduction by constructing a sulfur and oxygen (S, O) co-doped defective carbon electrocatalyst (HP-ACB). This HP-ACB electrocatalyst achieves a remarkable H₂O₂ kinetic current density of 184.3 A g^-1, a high Faradaic efficiency of 94 %, and enhanced H₂O₂ production reaching 8.21 mol g_cat^-1 h^-1. Experimental results with theoretical calculations demonstrate that the excellent electrocatalytic performance of HP-ACB in 2e^- ORR is attributed to the introduction of S, O atoms and defective carbon, which synergistically reduce the overpotential required for the adsorption of the key intermediate (OOH^⁎) on catalyst surface in 2e^- ORR. This research not only proposes a viable approach to enhancing the 2e^- ORR electrocatalytic activity of metal-free carbon materials but also highlights the importance of regulating the electronic structure of defective carbon in catalytic applications.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"700 Pt 3","pages":"138621"},"PeriodicalIF":9.7,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144815489","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}