Journal of Colloid and Interface Science最新文献

{"title":"Calcium overloaded multifunctional composite nanomaterials synergistically treat cancer by ferroptosis pathway","authors":"Fei Xu ,&nbsp;Yingqi Gao ,&nbsp;Xiaoxiao Zhou ,&nbsp;Jing Cui ,&nbsp;Ruozheng Wei ,&nbsp;Tao Peng","doi":"10.1016/j.jcis.2026.139961","DOIUrl":"10.1016/j.jcis.2026.139961","url":null,"abstract":"<div><div>The treatment of pancreatic cancer has long been a global challenge. Strategies based on mitochondrial Ca²⁺ overload-related ferroptosis have garnered significant attention. However, the various limitations of current Ca²⁺ generators make it difficult to maintain an effective concentration of Ca²⁺ overload. In this study, we developed a nanocomposite material, CaO₂@Fe(<em>SS</em>)-MOF@Ce6@PAA (CFMCP), by encapsulating CaO₂ nanoparticles (NPs) and the photosensitizer Chlorin e6 (Ce6) within a metal-organic framework (MOF) and further modifying it with polyacrylic acid (PAA). This nanocomposite effectively depletes glutathione (GSH) in tumor tissues, thereby enhancing the efficacy of photodynamic therapy (PDT) and chemodynamic therapy (CDT). Upon co-incubation of CFMCP NPs with SW1990 pancreatic cancer cells, we observed efficient cellular uptake of the nanomaterials. Under the influence of CFMCP NPs, cellular GSH and glutathione peroxidase 4 (GPX4) levels decreased, exacerbating oxidative stress and lipid peroxidation, increasing Fe²⁺ content, and aggravating mitochondrial damage. Using the mitochondrial Ca²⁺ uptake inhibitor Ruthenium red, we further confirmed that Ca²⁺ overload is a critical mechanism by which CFMCP NPs induce ferroptosis in SW1990 cells. In vivo studies demonstrated that CFMCP NPs exhibit excellent biocompatibility, significantly inhibit tumor growth, and exert direct cytotoxic effects. In summary, the development of this novel composite nanomaterial, which induces ferroptosis through mitochondrial Ca²⁺ overload, provides a valuable reference for synergistic and highly effective tumor therapy.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"710 ","pages":"Article 139961"},"PeriodicalIF":9.7,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146117275","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":"Enhanced electrocatalytic methanol oxidation to formate on iron-substituted nickel oxide","authors":"Ning Jian ,&nbsp;Yi Ma ,&nbsp;Huan Ge ,&nbsp;Jialing Tang ,&nbsp;Jing Yu ,&nbsp;Jordi Arbiol ,&nbsp;Jiwei Hu ,&nbsp;Yun Ke ,&nbsp;Chaochao Li ,&nbsp;Andreu Cabot ,&nbsp;Junshan Li","doi":"10.1016/j.jcis.2026.140014","DOIUrl":"10.1016/j.jcis.2026.140014","url":null,"abstract":"<div><div>Electrochemical methanol oxidation reaction (MOR) provides a promising route to reduce the anodic overpotential of water electrolysis while co-generating value-added chemicals. However, developing cost-effective catalysts that achieve highly efficient and selective methanol-to-formate conversion remains a significant challenge. In this work, we developed a series of potential cost-effective electrocatalysts synthesized via a hydrothermal–calcination route. Among them, the iron-substituted nickel oxide (Fe-NiO) electrode delivers the highest current density of ∼150 mA cm⁻² at 1.60 V vs. RHE, and remarkable MOR selectivity with a formate Faradaic efficiency of ∼100%, largely above control samplesof pristine NiO-, and Fe₂O₃-based electrode. At a lower external potential of 1.55 V, this electrode presents a remarkable stability, sustaining a high current density over 100 mA cm⁻² even at the end of 100 h operation.Advanced characterization combined with density functional theory (DFT) calculations reveals that Fe incorporation modulates the electronic structure of NiO, optimizes the adsorption of key reaction intermediates, and significantly reduces the energy barrier of the rate-determining step. This work establish an effective electronic-structure engineering strategy for designing earth-abundant, high-performance MOR electrocatalysts and provides mechanistic insights into tuning metal oxides for energy-efficient hydrogen co-production.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"710 ","pages":"Article 140014"},"PeriodicalIF":9.7,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146123318","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":"From local coordination to microenvironment: Synergistic promotion of CO2 reduction reaction on a sulfur-modulated single-atom catalyst","authors":"Maohuai Wang ,&nbsp;Yitong Yin ,&nbsp;Zhe Sun ,&nbsp;Zengxuan Chen ,&nbsp;Huashuo Zhang ,&nbsp;Shaojie Liu ,&nbsp;Siyuan Liu ,&nbsp;Zhaojie Wang ,&nbsp;Xiaoqing Lu","doi":"10.1016/j.jcis.2026.140036","DOIUrl":"10.1016/j.jcis.2026.140036","url":null,"abstract":"<div><div>Unraveling the reaction mechanism of the electrochemical CO₂ reduction reaction (CO₂RR) is a cornerstone in the quest for high-performance catalysts. This work adopts S-doped NiN₄ (NiN₃S₁) as a probe to reveal the synergistic promotion of local coordination and the reaction microenvironment on CO₂RR. The results show that N, S-coordination decreases the required potential for CO₂ chemical adsorption from −0.54 to −0.23 V. An explicit water-assisted mechanism for CO₂ activation is demonstrated, where H₂O molecules act as proton donors and form hydrogen-bond networks to facilitate CO₂ activation and reduce the reaction energy for *COOH formation. The applied potential (<em>U</em>) vs. Standard Hydrogen Electrode (SHE) promotes electron transfer and proton-coupled processes, thus improving the intermediate adsorption and reaction activity. As a result, the limiting potential of CO₂RR to CO decreases from −1.38 to −0.48 V with the increase in applied potential (<em>U</em>) vs. SHE from 0 to −0.84 V. Hydrogen evolution reaction on NiN₃S₁ is investigated as well to reflect the high CO₂RR selectivity. The results of this work highlight the synergistic promotion of coordination environment, explicit water molecules, and applied potential (<em>U</em>) vs. SHE to efficient CO₂RR, providing theoretical guidance for designing advanced CO₂RR electrocatalysts.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"710 ","pages":"Article 140036"},"PeriodicalIF":9.7,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146130744","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":"Photothermal synergy-driven low-temperature CO2 Methanation: Interfacial effects and reaction pathways on Ce/Ni inverse catalysts","authors":"Ruibin Xiong ,&nbsp;Xiaohua Cao ,&nbsp;Xingfu Li ,&nbsp;Miao Lin ,&nbsp;Dedong He ,&nbsp;Yubing Li ,&nbsp;Jichang Lu ,&nbsp;Yongming Luo","doi":"10.1016/j.jcis.2026.140023","DOIUrl":"10.1016/j.jcis.2026.140023","url":null,"abstract":"<div><div>Low-temperature CO₂ methanation efficiently enables efficient conversion of CO₂ into methane under mild conditions, presenting substantial potential for enhanced energy efficiency and economic feasibility. However, achieving highly efficient low-temperature CO₂ activation remains a critical challenge due to inherent kinetic constraints. In this study, the inverse-supported Ce/Ni catalyst (11 mol% Ce/Ni) was synthesized, which achieved 82% CO₂ conversion and nearly 100% CH₄ selectivity under photothermal synergy at 220 °C (300 W xenon lamp, 300–2500 nm, 1.5 W·cm⁻²), outperforming most conventional nickel-based catalysts. Moreover, the catalyst exhibited outstanding long-term stability, with only an 8% activity loss after 100 h of continuous operation. This superior performance was attributed to its CeO₂-Ni interfacial configurations and abundant oxygen vacancies. <em>In situ</em> diffuse reflectance infrared Fourier transform spectroscopy analysis revealed that the CO₂ methanation over this catalyst proceeds <em>via</em> a dual-intermediate pathway involving CO* and HCOO*, with photothermal synergy significantly accelerating the intermediate conversion without altering the intrinsic reaction pathway. This study establishes an innovative strategy for designing low-temperature and high-performance CO₂ methanation catalysts <em>via</em> the integration of an inverse Ce/Ni configuration with photothermal synergy.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"710 ","pages":"Article 140023"},"PeriodicalIF":9.7,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146137040","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":"Bi₂Se₃@BiSe heterostructures for triple-modal anticancer therapy: Integrating photothermal, photodynamic, and immunotherapeutic approaches","authors":"Shouning Yang ,&nbsp;Ran Guo ,&nbsp;Shuai Zhang ,&nbsp;Fangxiao Li ,&nbsp;Jinliang Liu ,&nbsp;Huayan Yang","doi":"10.1016/j.jcis.2026.140047","DOIUrl":"10.1016/j.jcis.2026.140047","url":null,"abstract":"<div><div>The integration of photothermal therapy (PTT), photodynamic therapy (PDT), and immunotherapy represents a promising strategy for enhancing anticancer efficacy. However, current approaches often rely on cocktail-based nanoplatforms that load multiple agents, which complicates preparation and raises concerns about stability and potential side effects. Therefore, developing structurally simple, easily synthesized nanomaterials with inherent multifunctionality is highly desirable. In this work, we report the first synthesis of biocompatible heterostructures. The interfacial contact within these heterostructures facilitates efficient charge carrier separation, enabling the simultaneous activation of photothermal conversion and photodynamic functionalities under near-infrared (NIR) irradiation. Beyond these photophysical effects, the obtained Bi₂Se₃@BiSe nanosheets effectively polarize M0 macrophages toward the tumor-suppressive M1 phenotype, a process which in turn promotes robust immunogenic cell death. Collectively, this work establishes Bi₂Se₃@BiSe as a versatile nanoplatform for triple-modal cancer therapy, seamlessly integrating PTT, PDT, and immunotherapy, thus proposing a novel paradigm for developing next-generation combinatory cancer therapeutics.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"710 ","pages":"Article 140047"},"PeriodicalIF":9.7,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146136976","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 heterojunction engineering in SiC/Ni-MOF derivative hybrids for boosting photocatalytic CO2 reduction with H2O","authors":"Shaobo Zhang ,&nbsp;Xinyuan Zhang ,&nbsp;Muhammad Rauf ,&nbsp;Beilei Wang ,&nbsp;Li Fang ,&nbsp;Yanxia Guo","doi":"10.1016/j.jcis.2026.139988","DOIUrl":"10.1016/j.jcis.2026.139988","url":null,"abstract":"<div><div>Heterojunction construction has been widely regarded as a pivotal strategy for enhancing photocatalytic CO₂ conversion of Ni-MOF and employing the post-synthetic modification (PSM) strategy can further improve the electron transport efficiency and increase the reaction active sites of MOF-based materials. Hence, in this study, a novel SiC/Ni-MOF derivatives dual heterojunction (Ni/C/SiC/Ni-MOF) with Schottky and Type-II was designed and synthesized via an in-situ hydrothermal followed by pyrolysis in N₂ atmosphere. The metallic Ni nanoparticles formed during pyrolysis acted simultaneously as active sites and electron accumulation hubs. Furthermore, the strong interfacial interactions of SiC/Ni-MOF type-II heterojunction and Schottky barrier between Ni and SiC facilitated efficient charge transfer across the interfaces. The coexistence of defective C and graphitic C optimized the adsorption of CO₂ and electron transport. In-situ DRFTIR analysis confirmed the formation of key intermediates *COOH and *CHO, which are vital for CO₂ conversion to CO and CH₄. Density functional theory (DFT) calculations revealed the electron transfer route with the existence of internal electron field (IEF). Meanwhile, the energy level matching among graphitic C, SiC and Ni resulted in the accumulation of electrons on metallic Ni. Under simulated sunlight irradiation, the evolution rates of CO and CH₄ on SiC/Ni-MOF pyrolyzed at 400 °C (S/N-400) achieved 7.42 μmol·g⁻¹·h⁻¹ and 16.75 μmol·g⁻¹·h⁻¹, respectively with a CH₄ selectivity as high as 90.0%. This work provides a feasible strategy for constructing dual heterojunction with synergistic effects to accomplish efficient CO₂ conversion.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"710 ","pages":"Article 139988"},"PeriodicalIF":9.7,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146140723","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":"Upgrading sustainability: Ammonium sulfate recovery from low-concentration nitrate groundwater by ion exchange, electrolysis and gas-permeable membrane contactor hybrid system","authors":"Chaosheng Zhu ,&nbsp;Xiaobin Guo ,&nbsp;Yonghong Zhang ,&nbsp;Mengdi Lu ,&nbsp;Yifan Li ,&nbsp;Bo Jiang ,&nbsp;Yijie Liu","doi":"10.1016/j.jcis.2026.139980","DOIUrl":"10.1016/j.jcis.2026.139980","url":null,"abstract":"<div><div>In this study, an anion exchange, electrolytic reactor and membrane contactor coupled system (AE-ER-MC) was developed for high-performance recovering (NH₄)₂SO₄ from the low-concentration NO₃⁻ contaminated groundwater, where the basic anion exchange resin selectively removed NO₃⁻ from the groundwater, the NO₃⁻ exhausted resin was regenerated by the NaCl catholyte, and ammonia was produced from the NO₃⁻ reduction at the Fe₂O₃-O_v cathode and recovered by membrane stripping process. The AE-ER-MC system achieved at 98% NO₃⁻ removal efficiency and 81% ammonia recovery efficiency at a current density of 20 mA cm⁻² with the energy consumption of 19.78 kWh kg⁻¹(NH₄)₂SO₄, which was only 1 % of that of the ER-MC system. The AE-ER-MC system showed stable treatment performance in consecutive cycles with the ammonia recovery efficiency at near 80%. The direct electron transfer reaction was mainly responsible for the NO₃⁻ reduction at Fe₂O₃-O_v at cathode. The DFT calculation results shows that NO₃⁻ more favorably adsorbed at Fe₂O₃-O_v and could undergo spontaneous bond breaking of N<img>O bond with the formation of NO₂⁻, bypassing the conversion of ^⁎NO₃⁻ to *NO₃H step in typical NO₃⁻ reduction process. In present combined system, the hardness ions were hardly present in the catholyte since the repulsion effect of basic anion exchange resin. And the developed system did not suffer from the cathode passivation, potential risk of membrane fouling, secondary pollution from high-salt regenerant. Generally, the AE-ER-MC system offers a meaningful paradigm for the design of energy-efficient and resource-recovery technique toward low-concentration NO₃⁻ water treatment.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"710 ","pages":"Article 139980"},"PeriodicalIF":9.7,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146077116","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":"Functional group engineering for boosting catalytic activity: high turnover frequency in electrocatalytic CO2 reduction and Zn-CO2 batteries","authors":"Hao Zeng ,&nbsp;Xiangbing Zou ,&nbsp;Shuo Yang ,&nbsp;Sizhe Tang ,&nbsp;Shanshan Luo ,&nbsp;Meiyue Cheng ,&nbsp;Haiping Xu ,&nbsp;Yujie Song ,&nbsp;Ming Liu ,&nbsp;Yang Liu ,&nbsp;Ming Yang ,&nbsp;Bing Li","doi":"10.1016/j.jcis.2026.139983","DOIUrl":"10.1016/j.jcis.2026.139983","url":null,"abstract":"<div><div>Functionalized cobalt phthalocyanine (CoPc) supported on carbon supports are promising electrocatalyst for the electrochemical reduction of carbon dioxide (eCO₂RR), yet the role of functional groups on catalytic activity is pending for clarification and optimization to maximize the reaction kinetics. Herein, a series of eCO₂RR catalysts are fabricated by affixing functionalized molecular catalysts onto the nitrogen-doped porous carbon (NPC), denoted as CoPc-4x@NPC (x = H, NH₂ and NO₂). Among them, CoTNPc@NPC exhibits exceptional eCO₂RR performance: in an H-type cell, it achieves a current density of 45 mA cm⁻² at −0.91 V vs. RHE with CO Faradaic efficiency (FE_CO) exceeding 93.5% over a wide potential range, long-term stability over 40 h, and a remarkable turnover frequency (TOF) of 23.49 s⁻¹. In a flow cell configuration, the CO partial current density (<em>J</em>_CO) further increases to 224.1 mA cm⁻² at −0.91 V. Density functional theory (DFT) calculations reveal that the nitro group upshifts the <em>d</em>-band center, enhances Co center electrophilicity, pre-donates electrons for *COOH formation, and underlies the higher turnover frequency. Integrating CoTNPc@NPC into a Zn-CO₂ battery delivers a maximum discharge power density of 3.86 mW cm⁻² and stable operation for over 15 h. This work highlights the potential of molecularly engineered CoPc catalysts for eCO₂RR and Zn-CO₂ battery applications, providing new insights for the rational design of high-performance electrocatalysts.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"710 ","pages":"Article 139983"},"PeriodicalIF":9.7,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146077111","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":"Breaking the peroxymonosulfate activation barrier: B-induced non-radical for scalable antibiotic mineralization","authors":"Yan Pei ,&nbsp;Mengbo Cao ,&nbsp;Xun Liu ,&nbsp;Shuguang Shen ,&nbsp;Zhigang Lei ,&nbsp;Hongbing Yang","doi":"10.1016/j.jcis.2026.139985","DOIUrl":"10.1016/j.jcis.2026.139985","url":null,"abstract":"<div><div>The inherent kinetic challenges posed by the robust O<img>O and O<img>H bonds in peroxymonosulfate (PMS) significantly hinder contaminant degradation in advanced oxidation processes (AOPs). In this study, we develop a boron‑nitrogen coordinated cobalt single-atom catalyst (SA-Co-BN) through defect-assisted atomic confinement to overcome these limitations. Both experimental and theoretical investigations demonstrate that the low electronegativity of boron induces charge redistribution at the cobalt sites, thereby synergistically enhancing charge transfer dynamics and lowering proton transfer barriers. This facilitates the selective generation of high-valent cobalt-oxo species (Co(IV)<img>O) and singlet oxygen (¹O₂) as predominant non-radical oxidants, effectively circumventing scavenging effects by background anions. The SA-Co-BN + PMS system achieves 91.2% removal of tetracycline (TC) within 30 min (kinetic constant: 0.071 min⁻¹), representing more than a twofold increase compared to conventional Co<img>N₄ single-atom catalysts (SACs). Furthermore, it maintains over 80% efficiency across a broad pH range (3–11) and in complex matrices, such as wastewater containing 5 mM Cl⁻/CO₃²⁻. Quantitative structure-activity relationship analyses reveal strong correlations between contaminant degradation kinetics and molecular descriptors, including hydrophilicity, energy gap (ΔE), and electrophilicity index. Importantly, a continuous-flow reactor employing immobilized SA-Co-BN exhibits operational stability for 680 min with 80% contaminant removal, while toxicity assessments confirm a significant reduction in the ecotoxicity of degradation intermediates. This work establishes an atomic-scale design principle for heteroatom-modulated SACs, thereby advancing non-radical oxidation technologies toward practical applications in water purification.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"710 ","pages":"Article 139985"},"PeriodicalIF":9.7,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146077114","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":"Quaternary phosphonium bromide passivation for high-performance perovskite quantum dot light-emitting diodes","authors":"Wanying Zhang ,&nbsp;Kaihuai Zhuo ,&nbsp;Jie Chen ,&nbsp;Tongtong Wang ,&nbsp;Xuanyang He ,&nbsp;Mengjie Li ,&nbsp;Weilin Gao ,&nbsp;Yiran Zhao ,&nbsp;Xue Yang ,&nbsp;Zhuoyin Peng ,&nbsp;Xiaoyu Zhang ,&nbsp;Yingwei Wang ,&nbsp;Keqiang Chen ,&nbsp;Guogang Li","doi":"10.1016/j.jcis.2026.140017","DOIUrl":"10.1016/j.jcis.2026.140017","url":null,"abstract":"<div><div>Surface ligands are crucial for perovskite quantum dot (PQD) optoelectronics. However, long alkyl chains limit charge transport, while short chains destabilize their soft lattice, presenting a stability–mobility dilemma. Moreover, surface-bound protonated primary amines are susceptible to deprotonation, accelerating performance decay and structural collapse. In this work, we introduced tetrabutylphosphonium bromide (TBPB) as a surface passivation ligand to overcome these limitations. TBPB combines minimal molecular polarity—enabling a short chain for superior charge transport—with a fully coordinated phosphonium center that resists deprotonation and passivates halogen vacancies. This yields quantum dots with near-unity PLQY and robust stability, leading to LEDs achieving a maximum external quantum efficiency (EQE) of 24.28% and luminance of 122,786 cd m⁻², far surpassing control devices. Further shortening the ligand chain increases EQE to 27.89% but at the cost of severe luminance loss, underscoring the delicate balance in ligand engineering.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"710 ","pages":"Article 140017"},"PeriodicalIF":9.7,"publicationDate":"2026-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146117439","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}