Journal of Colloid and Interface Science最新文献

{"title":"12-Hydroxyoctadecanoic acid forms two kinds of supramolecular gels in nanostructured protic ionic liquids","authors":"George P.T. Roddy ,&nbsp;Livia Salvati Manni ,&nbsp;Rob Atkin ,&nbsp;Gregory G. Warr","doi":"10.1016/j.jcis.2025.137384","DOIUrl":"10.1016/j.jcis.2025.137384","url":null,"abstract":"<div><h3>Hypothesis</h3><div>We postulate that the amphiphilic nanostructure of ionic liquids, consisting of interpenetrating networks of polar and apolar domains, may enable them to support distinct self-assembled organogel-like and hydrogel-like structures.</div></div><div><h3>Experiments</h3><div>The structures of gels formed by the low molecular weight gelator 12-hydroxystearic acid (12HSA) and its ammonium salts have been investigated from the molecular to the microscale by a combination of powder X-ray diffraction, SAXS/WAXS, FTIR, CD, and optical microscopy, together with rheological characterisation of the gels formed.</div></div><div><h3>Findings</h3><div>12HSA is shown to form long-lived ionogels in ethylammonium and propylammonium nitrate ionic liquids at low concentrations via two distinct mechanisms; supramolecular, hydrogen-bond driven aggregation of the acid and amphiphilic assembly of the conjugate base. 12HSA gel structures were shown to consist of high aspect-ratio twisted crystalline fibrils assembled from H-bonded dimers, similar to organogels, while 12HS salts form an elongated rectangular ribbon of solvophobically-associated lamellar stacks with an opposite twist to the acid form. Partial neutralisation of 12HSA gels with base can generate coexisting mixtures of both types of gel in these ILs.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"691 ","pages":"Article 137384"},"PeriodicalIF":9.4,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cu doping induced asymmetric Cu-Vs-In active sites in In2S3 for efficient photocatalytic C2H4 conversion from CO2","authors":"Fangyuan Xing ,&nbsp;QianYi Li ,&nbsp;JunYan Li ,&nbsp;Zhiyong Xiong ,&nbsp;Chengzhi Wang ,&nbsp;Ning Li ,&nbsp;Haibo Jin ,&nbsp;Yuefeng Su ,&nbsp;Caihong Feng ,&nbsp;Jingbo Li","doi":"10.1016/j.jcis.2025.137388","DOIUrl":"10.1016/j.jcis.2025.137388","url":null,"abstract":"<div><div>Selective reduction of CO₂ to value-added C₂-chemical fuels, (such as C₂H₄) holds great promise for directly converting solar energy into chemical energy. However, the weak adsorption of CO₂ on photocatalysts directly affects its conversion efficiency. Here we use Cu doping to create asymmetric Cu-S-vacancies-In (Cu-V_S-In) sites in the two-dimensional In₂S₃, which greatly improves CO₂ adsorption, achieving efficient photocatalytic reduction of CO₂ to C₂H₄. Experiments and DFT (Density functional theory) calculations show that Cu doping, due to the influence of charge balance, will induce S vacancies and change the coordination environment around In atoms. This changes the mode of CO₂ adsorption and decreases the adsorption energy of CO₂. The asymmetric Cu-V_S-In sites promote charge transfer to the C<img>O bond, increasing catalytic activity. The concept of using asymmetric sulfur vacancies to simultaneously regulate both adsorption and charge transfer between catalysts and reactants provides a design guide for the development of advanced catalytic materials aimed at photocatalytic CO₂ reduction.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"691 ","pages":"Article 137388"},"PeriodicalIF":9.4,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684022","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":"Photocatalytic direct dehydrogenative coupling of alcohols using α-cyclodextrin decorated sulfur quantum dots","authors":"Yue Lu ,&nbsp;Jingnan Zhao ,&nbsp;Guofeng Zhao ,&nbsp;Peiyu Yi ,&nbsp;Liyuan Duan ,&nbsp;Huinan Sun ,&nbsp;Qilei Liu ,&nbsp;Qingwei Meng","doi":"10.1016/j.jcis.2025.137352","DOIUrl":"10.1016/j.jcis.2025.137352","url":null,"abstract":"<div><div>Sulfur quantum dots, a new type of non-metallic quantum dots, have gained widespread attention as a promising alternative material. In this work, we synthesized aqueous sulfur quantum dots modified with <em>α</em>-cyclodextrin (CD-S dots) by hydrothermal method. Under visible light irradiation, CD-S dots could promote the dehydrogenative cross-coupling reaction of alcohols and amines to produce imine products. We demonstrated the host-guest interaction between the ligand of CD-S dots and benzyl alcohol through experiments such as nuclear magnetic resonance (NMR) spectroscopy. Consequently, benzyl alcohol could easily approach the surface of CD-S dots without being affected by the ligand, and then it could be oxidized by holes. It was suggested that CD-S dots reduced the barriers of carrier transfer through host-guest interactions with benzyl alcohol, and improved the selectivity and efficiency of the reaction. Our work provided ideas for the application of emerging sulfur quantum dots in selective organic synthesis. Based on the rich tunability of quantum dot materials, various efficient and eco-friendly catalytic systems are expected to be developed.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"691 ","pages":"Article 137352"},"PeriodicalIF":9.4,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684007","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":"Morphological engineering of monodispersed Co2P nanocrystals for efficient alkaline water and seawater splitting","authors":"Xiuwen Wang ,&nbsp;Tingting Su ,&nbsp;Zhaohui Lu ,&nbsp;Lan Yu ,&nbsp;Ning Sha ,&nbsp;Chunmei Lv ,&nbsp;Ying Xie ,&nbsp;Ke Ye","doi":"10.1016/j.jcis.2025.137389","DOIUrl":"10.1016/j.jcis.2025.137389","url":null,"abstract":"<div><div>Developing feasible synthetic strategies for preparing advanced nanomaterials with narrow size distributions and well-defined structures represents a cutting-edge field in alkaline water and seawater electrolysis. Herein, the monodispersed Co₂P nanocrystals with tunable morphologies, namely one-dimensional nanorods (Co₂P-R), nanoparticles (Co₂P-P), and nanospheres (Co₂P-S), were controllably synthesized by using a Schlenk system through optimizing the reactivity of cobalt- and phosphorus-based sources. The resulting Co₂P-R exhibited superior electrocatalytic activity for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in 1.0 M KOH, simulated seawater, and natural seawater. Impressively, the reconstructed active species effectively avoid the chlorine evolution on Co₂P-R surface and facilitate OER process. Density functional theory (DFT) calculations revealed that Co₂P-R exhibited an optimal d-band center (ε_d) and a lower energy barrier for the rate-determining steps in both HER and OER processes in comparison with Co₂P-P and Co₂P-S. Additionally, the Co₂P-R showed a more favorable water adsorption energy (E_H2O) over Cl⁻ adsorption energy (E_Cl−), which contributes to its enhanced seawater electrolysis performance. The Co₂P-R||Co₂P-R electrolyzer achieves a low voltage of 1.70, 1.76, and 1.76 V at 100 mA cm⁻² in alkaline freshwater, simulated seawater, and natural seawater, respectively, and demonstrates stable operation for 200 h at 100 mA cm⁻².</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"691 ","pages":"Article 137389"},"PeriodicalIF":9.4,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684023","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":"Interfacial molybdate-enabled electric field deconfinement to passivate water oxidation for wide-potential biomass electrooxidation","authors":"Keping Wang ,&nbsp;Mei Wu ,&nbsp;Yan Zhang ,&nbsp;Yuhe Liao ,&nbsp;Yaqiong Su ,&nbsp;Song Yang ,&nbsp;Hu Li","doi":"10.1016/j.jcis.2025.137390","DOIUrl":"10.1016/j.jcis.2025.137390","url":null,"abstract":"<div><div>The priority adsorption of OH⁻ in the anodic refining process typically compromises the accessibility of organic reactants and propels their competing oxygen evolution reaction (OER), inevitably generating inactive areas of organics electrooxidation. In this work, an electric field deconfinement strategy enabled by self-originated MoO₄²⁻ was unveiled to confine the mass diffusion of OH⁻ over a Mo-modulated Ni-based electrode (NiMoO_x/NF). The reconstructable NiMoO_x/NF catalyst was high-efficiency for selective electrooxidation of various biomass derivatives, especially for electrocatalytic 5-hydroxymethylfurfural (HMF) oxidation reaction (e-HMFOR) to afford 2,5-furanedicarboxylic acid (FDCA, a versatile bioplastic monomer). In-situ tests and finite element analyses evidenced that NiOOH-MoO₄²⁻ in-situ reconstructed from NiMoO_x/NF is responsible for e-HMFOR, where the surface-adsorbed MoO₄²⁻ can trigger a negative electric field to restrict OH⁻ affinity by electrostatic repulsion but facilitate HMF adsorption, thereby leading to the deteriorated OER and enhanced e-HMFOR. Theoretical calculations further elaborated that introduced MoO₄²⁻ boosts HMF adsorption to accelerate the reaction kinetics but elevates the energy barrier of O* coupling into OOH* to passivate OER. As a result, a wide potential interval (1.35–1.55 V_RHE) was applicable to produce FDCA via e-HMFOR with admirable productivity (95.4–97.8% faradaic efficiencies), rivaling the state-of-the-art Ni-based electrodes. In addition, the established membrane electrode assembly electrolyzer could be operated stably for 40 h at least, with high efficiency in electrosynthesis of gram-grade FDCA. This study underlines the viability and criticality of electric field deconfinement for manipulating the OH⁻ adsorption to facilitate organics electrooxidation and biorefinery while getting rid of competing reactions.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"691 ","pages":"Article 137390"},"PeriodicalIF":9.4,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684024","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":"Anticoagulation colloidal microrobots based on heparin-mimicking polymers","authors":"Huanhuan Wang ,&nbsp;Huaguang Wang ,&nbsp;Xiaoli Liu ,&nbsp;Zexin Zhang","doi":"10.1016/j.jcis.2025.137345","DOIUrl":"10.1016/j.jcis.2025.137345","url":null,"abstract":"<div><div>Coagulation within blood vessels is a major cause of cardiovascular disease and global mortality, highlighting the urgent need for effective anticoagulant strategies. In this study, we introduce a dynamic and highly efficient anticoagulant platform, achieved through the fabrication of a novel colloidal microrobot with unique functional properties. The microrobot is a Janus colloidal sphere with one hemisphere coated with heparin-mimicking polymers and the other with gold. This structure endows the microrobot with self-propulsion capabilities, powered by biocompatible near-infrared (NIR) irradiation, without the need for chemical fuel. The heparin-mimicking polymers not only prevent blood clotting but also promote endothelial cell growth while inhibiting the proliferation of smooth muscle cells. Additionally, the self-propulsion feature allows the microrobot to travel long distances within blood vessels and precisely target sites for anticoagulation. Our work validates an approach for the production of biofunctionalized microrobots, which introduces a novel avenue for anticoagulation application through the development of innovative biofunctionalized colloidal devices.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"691 ","pages":"Article 137345"},"PeriodicalIF":9.4,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143705799","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 doping-triggered electron redistribution in cobalt-rich sulfide for efficient electrocatalytic water splitting","authors":"Senchuan Huang ,&nbsp;Yangfei Cao ,&nbsp;Chaolun Liang ,&nbsp;Meng Li ,&nbsp;Honghu Yao ,&nbsp;Kai-Hang Ye ,&nbsp;Zimo Huang ,&nbsp;Junxia Meng ,&nbsp;Shanqing Zhang","doi":"10.1016/j.jcis.2025.137382","DOIUrl":"10.1016/j.jcis.2025.137382","url":null,"abstract":"<div><div>Cobalt-rich sulfide (Co₉S₈) holds great promise as an electrocatalyst for water splitting, but its performance for hydrogen evolution reaction (HER) in alkaline and neutral media is limited by sluggish water dissociation kinetics. Herein, we find that moderate oxygen doping within Co₉S₈, preferentially at the interstitial sites, triggers significant electron redistribution <em>via</em> Co–O–S bridges, which decreases the local electron density of Co and S sites. This treatment enhances H₂O adsorption and dissociation at the Co-sites and optimizes H* adsorption/desorption at the S-sites, notably on the high-index (311) facet, thus accelerating the water dissociation kinetics. The oxygen-doped Co₉S₈ catalyst, dominated by the (311) crystal plane, demonstrates remarkable HER activity and stability in alkaline solution, with a low overpotential of 142 mV at 10 mA cm⁻² and a Tafel slope of 96 mV dec⁻¹, outperforming most Co₉S₈-based catalysts. Under neutral condition, it exhibits a low overpotential of 264 mV at 10 mA cm⁻². Further applied in an anion exchange membrane water electrolyzer, it reaches 150mA cm⁻² at 1.70 V, surpassing the commercial Pt/C (134 mA cm⁻²). This oxygen doping-triggered electron redistribution strategy paves new ways for developing highly efficient transition metal-based electrocatalysts for sustainable energy applications.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"690 ","pages":"Article 137382"},"PeriodicalIF":9.4,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685130","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":"Efficient phosphorus doping strategy to overcome lattice distortion in Mn-based cathodes for advanced potassium-ion batteries","authors":"Zhenxiang Wang,&nbsp;Zhiwang Liu,&nbsp;Hongyan Li","doi":"10.1016/j.jcis.2025.137387","DOIUrl":"10.1016/j.jcis.2025.137387","url":null,"abstract":"<div><div>Manganese-based metal oxides have emerged as promising cathode materials for potassium-ion batteries (PIBs) due to favourable structural characteristics, such as large interlayer spacing and long diffusion paths for K⁺ ions. However, there are challenges due to the Jahn-Teller effect of the Mn³⁺ and the large volumetric strains of the charge/discharge process. In this study, the unfavorable lattice strains as well as the electrochemical properties were improved by phosphorus doped potassium manganate strategy. P-doped increases the K⁺ storage active sites by increasing the Mn³⁺ content to enhance the storage capacity. In addition, the PO₄ and MnO₆ octahedra share O to stabilize the lattice and suppress the Jahn-Teller effect as well as the bulk strain induced by K⁺ insertion/extraction. The reduced charge transfer resistance as well as the enlarged layer spacing help to reduce the K⁺ diffusion barrier, fast K⁺ diffusion kinetics, and improve the rate performance. K_0.6MnP_0.02O₂ (P-KMnO-2) has capacity of 50.97 mAh g⁻¹ at 1000 mA g⁻¹. And after 500 cycles at 500 mA g⁻¹, P-KMnO-2 still has capacity of 41 mAh g⁻¹. In addition, maximum energy density of full cell composed of P-KMnO-2 and soft carbon reached 176.4 Wh kg⁻¹.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"691 ","pages":"Article 137387"},"PeriodicalIF":9.4,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143705821","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":"Coil dimensions of macromolecules in the presence of crowding colloids: Impact of crowder size","authors":"K. Huber ,&nbsp;C.M. Martens ,&nbsp;R. Tuinier","doi":"10.1016/j.jcis.2025.137340","DOIUrl":"10.1016/j.jcis.2025.137340","url":null,"abstract":"<div><h3>Hypothesis</h3><div>The size of a macromolecule in solution is strongly influenced by the size and concentration of added colloidal particles. Previous experimental and computer simulation studies have shown conflicting results regarding the influence of colloid size on coil compaction. We suggest the coil size depends on the Kuhn segment / nanoparticle size ratio and argue its subtle influence on the shrinking and expansion of a polymer chain.</div></div><div><h3>Methods</h3><div>Based upon the work of van der Schoot (1998) <span><span>[42]</span></span> we propose theory that predicts how the colloid size mediates the compaction of macromolecules in crowded environments. The theoretical predictions are compared to self-consistent field (SCF) lattice computations and scattering experiments on polymer solutions exposed to crowders.</div></div><div><h3>Findings</h3><div>The theoretical approach predicts that the shrinking of a polymer coil upon adding colloidal particles varies with the size of the colloids. We find coil shrinking is weakest when the colloidal particles are approximately the same size as the Kuhn segment length. The extent of coil shrinking passes a minimum at a specific colloid size relative to the Kuhn segment length, which is confirmed by SCF computations.</div><div>Comparison with scattering experiments reveals that these experiments corroborate the extent of polymer shrinking at a given volume fraction of colloids. Our theoretical approach reproduces the functional dependence of the collapse on the crowder volume fraction.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"691 ","pages":"Article 137340"},"PeriodicalIF":9.4,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143705800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Porous hydrogel micropressure sensors enabled by nanocellulose microgel stabilized high internal phase pickering emulsion templates","authors":"Yang Yang ,&nbsp;Meng Zhang ,&nbsp;Zhaoping Song ,&nbsp;Peng Lu","doi":"10.1016/j.jcis.2025.137393","DOIUrl":"10.1016/j.jcis.2025.137393","url":null,"abstract":"<div><div>Lightweight soft hydrogels are ideal materials for next-generation sustainable wearable flexible electronics. However, achieving an optimal combination of high flexibility, high sensitivity, and micropressure sensing presents significant challenges. Introducing porous structures has emerged as a promising approach to enhance the micropressure responsiveness of hydrogels. This study proposes a highly stable high internal phase Pickering emulsion (HIPE) template stabilized by nanocellulose microgels to fabricate ultrasoft porous hydrogels with high porosity. By regulating the stability and microstructure of the HIPE, the porous hydrogels achieved synergistic improvements in high deformability, subtle pressure detection, and enhanced sensitivity. The porous hydrogels prepared by combining HIPE with an acrylic acid/acrylamide system exhibited low Young’s modulus (11 kPa), high porosity (75.9 %), extensive tensile strain range (0–1368 %), enhanced sensitivity coefficient (133.18 kPa⁻¹) under subtle pressures (0–230 Pa), and excellent skin-adhesion capabilities. The integrated porous hydrogel sensors enabled precise detection of micropressure signals (e.g., pulses and wrist movements) under various motion states. This study provides a novel strategy for improving micropressure detection and sensitivity in hydrogel-based flexible micropressure sensors, highlighting their immense potential for diverse applications in flexible electronics.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"691 ","pages":"Article 137393"},"PeriodicalIF":9.4,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684005","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}