Journal of Colloid and Interface Science最新文献

{"title":"Structure and interfacial properties of phospholipid-containing sponge nanoparticles and their interaction with myoglobin","authors":"Alessandra Luchini ,&nbsp;Marshall R. Machingauta ,&nbsp;Sebastian Köhler ,&nbsp;Jennifer Gilbert ,&nbsp;Ivan P. Yakimenko ,&nbsp;Jens Birch ,&nbsp;Kenneth Järrendahl ,&nbsp;Joshaniel F.K. Cooper ,&nbsp;Sjoerd Stendahl ,&nbsp;Sean Langridge ,&nbsp;Christy Kinane ,&nbsp;Andrew J. Caruana ,&nbsp;Olga Dikaia ,&nbsp;Aleksandr Goikhman ,&nbsp;Alexey Vorobiev ,&nbsp;Anton Devishvili ,&nbsp;Björgvin Hjörvarsson ,&nbsp;Tommy Nylander","doi":"10.1016/j.jcis.2025.137879","DOIUrl":"10.1016/j.jcis.2025.137879","url":null,"abstract":"<div><h3>Hypothesis</h3><div>Sponge phase (L₃) lipid nanoparticles (L₃-NPs) have been shown to have large potential for the encapsulation of biomolecules, such as enzymes, with applications in food and pharmaceutical science. In this study, we introduce new formulations of L₃-NPs including the phospholipids dioleoylphosphatidylcholine (DOPC) and dioleoyltrimethylammonium propane (DOTAP). The interaction of these new L₃-NPs with myoglobin is of interest for the development of iron supplements which can be incorporated during food processing.</div></div><div><h3>Experiments</h3><div>We characterized the sample structure by small-angle X-ray scattering (SAXS) measurements with and without the addition of myoglobin. We also tested the myoglobin-lipid interaction in an experimental setup that mimicked the interface between the bilayer and water channels within the bicontinuous sponge structure. This included spreading the L₃-NPs onto a hydrophilic surface to form supported lipid bilayers and characterizing their interaction with myoglobin by means of quartz crystal microbalance with dissipation monitoring and polarized neutron reflectometry.</div></div><div><h3>Findings</h3><div>SAXS data indicate that the new formulations containing DOPC and DOTAP formed a sponge phase in the bulk. The data from the surface techniques showed that deposited bilayers containing DOPC were largely unaffected by the addition of myoglobin, whereas those without DOPC were destabilized and partially removed.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"697 ","pages":"Article 137879"},"PeriodicalIF":9.4,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144134325","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":"Wetting behavior of oil droplets on CO2 bubbles influenced by interfacial shear elasticity","authors":"Jiatong Jiang ,&nbsp;Suparit Tangparitkul ,&nbsp;Mark C.T. Wilson ,&nbsp;Zhaojie Song ,&nbsp;David Harbottle","doi":"10.1016/j.jcis.2025.137929","DOIUrl":"10.1016/j.jcis.2025.137929","url":null,"abstract":"<div><h3>Hypothesis</h3><div>Wetting dynamics and behaviors of droplets and bubbles are often considered with respect to the interfacial/surface tensions of the system, with contributions from the interfacial shear rheology largely unexplored. We hypothesize that the interfacial shear elasticity acts as a resistive force to droplet wetting, with the equilibrium wetted state more influenced by the interfacial shear rheology than the interfacial/surface tensions.</div></div><div><h3>Experiments</h3><div>An oil droplet of DecTol (4:6 v/v) containing asphaltenes is brought into contact with a CO₂ bubble in brine. The shear viscoelasticity of the oil-brine interface is varied by changing the asphaltenes concentration (150 and 15,000 mg/L) and aging time of the system (10 and 120 min). Wetting behaviors of the oil droplet on the CO₂ bubble are captured using high speed imaging.</div></div><div><h3>Findings</h3><div>Considering the interfacial/surface tensions of the three phases, the equilibrium wetted state would be that of an oil droplet fully encapsulating a CO₂ bubble. This is true for the low asphaltene concentration and short aging time system. When aged for longer, or for the high asphaltene concentration, partial encapsulation is observed. The change in wetting behavior is a result of the shear elasticity of the asphaltene film at the oil-brine interface. As the asphaltene film fractures/yields, the oil droplet begins to wet the CO₂ bubble, causing the interfacial film to be stretched. With the asphaltene film resistive force acting opposite to the wetting force, complete encapsulation is prevented, and for the highest film elasticity, partial dewetting of the oil droplet on the CO₂ bubble is seen, indicating a stronger resistive force than the wetting force (Gibbs energy).</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"697 ","pages":"Article 137929"},"PeriodicalIF":9.4,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144167973","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":"Excellent absorption-dominant electromagnetic interference shielding performances of asymmetric gradient layered composite films exploited with assistance of machine learning","authors":"Lingjun Zeng ,&nbsp;Yu Zhang ,&nbsp;Xiaoping Mai ,&nbsp;Peng Ai ,&nbsp;Lan Xie ,&nbsp;Bai Xue ,&nbsp;Qiang Zheng","doi":"10.1016/j.jcis.2025.137927","DOIUrl":"10.1016/j.jcis.2025.137927","url":null,"abstract":"<div><div>Developing high-performance absorption-dominant electromagnetic interference (EMI) shielding composites is essential yet challenging for advanced high-power electronic devices to minimize the second EMI radiation. Traditional experiment-based approaches for shielding material exploitation usually require extensive fabrication and characterization procedures, leading to a long duration and high expense. Herein, machine learning was applied to assist in developing calcium alginate/sodium montmorillonite/CNT@FeCo/CNT (CA/MMT/CNT@FeCo/CNT, CMF/CMFC-x wt%/CMC-y wt%) EMI shielding composites with the asymmetrical gradient layered architecture, triggering the optimization of absorption-dominant EMI shielding properties and reducing experimental costs. The fabricated CMF/CMFC-48.4 wt%/CMC-43.9 wt% film with a small thickness (341.4 μm) exhibits the superior averaged total EMI shielding effectiveness (EMI SE_T) of 38.9 dB and optimal absorption coefficient (A) of 0.61, when electromagnetic waves (EMWs) are incident from CMF layer. Based on experimental data, the reflection shielding effectiveness (SE_R), absorption shielding effectiveness (SE_A), reflection coefficient (R), and A are utilized to train and test four different machine learning models. Polynomial Linear model (PL) possesses the best prediction accuracy and reliability with the root mean square error (RMSE) of SE_R and SE_A lower than 0.7022, and RMSE of R and A below 0.0361, suggesting that machine learning can effectively alleviate the experimental burden. Moreover, the composite film also features the acceptable mechanical properties and prominent fire resistance, which is vital for the practical application. This work provides a new idea for reducing experimental costs and accelerating the discovery of advanced absorption-dominant EMI shielding materials.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"697 ","pages":"Article 137927"},"PeriodicalIF":9.4,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115373","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":"Fabrication of porous Cl-Nb2O5-x nanostructures with large surface areas for photodegradation of organic contaminant: Morphology evolution, performance, and mechanism","authors":"Jiaxin Yao ,&nbsp;Feng Gao ,&nbsp;Yi Zhao ,&nbsp;Yajie Tian ,&nbsp;Xin Yu ,&nbsp;Yanting Tang","doi":"10.1016/j.jcis.2025.137938","DOIUrl":"10.1016/j.jcis.2025.137938","url":null,"abstract":"<div><div>Fabricating semiconductor photocatalysts with abundant oxygen vacancies and porous structures contributes to charge separation and surface photocatalytic degradation reactions. In this work, porous Cl-Nb₂O_5-x nanostructures were synthesized via a calcination method using NbCl₅ as the niobium and chlorine sources to achieve efficient tetracycline degradation under visible-light irradiation. Porous Nb₂O_5-x nanostructures were formed during the calcination process accompanied by the generation of oxygen vacancies. The obtained Cl-Nb₂O_5-x samples demonstrated significantly enhanced photocatalytic performance compared to commercial Nb₂O₅. The synthesized Cl-Nb₂O_5-x-450 sample exhibited the highest photocatalytic performance, achieving a maximal rate constant of 0.03093 min⁻¹, which markedly surpassed that of commercial Nb₂O₅. The remarkable enhancement in tetracycline degradation of the Cl-Nb₂O_5-x photocatalysts was mainly attributed to the generation of oxygen vacancies and porous structures with large surface areas. Finally, the photodegradation pathways of tetracycline facilitated by the Cl-Nb₂O_5-x photocatalysts and a plausible photocatalytic mechanism of the Cl-Nb₂O_5-x photocatalysts were also investigated in this work.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"697 ","pages":"Article 137938"},"PeriodicalIF":9.4,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144168002","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":"Regulating the electrode-electrolyte interface in Li-S batteries with 2,5-dimercapto-1,3,4-thiadiazole additives","authors":"Xiaohui Song ,&nbsp;Rui Huang ,&nbsp;Xin Liang ,&nbsp;Yang Wang ,&nbsp;Qian Hou ,&nbsp;Binghui Ge ,&nbsp;Qiaobao Zhang ,&nbsp;Febri Baskoro ,&nbsp;Afriyanti Sumboja ,&nbsp;Rong Xiang ,&nbsp;Hongfa Xiang ,&nbsp;Zhimei Huang","doi":"10.1016/j.jcis.2025.137953","DOIUrl":"10.1016/j.jcis.2025.137953","url":null,"abstract":"<div><div>The commercialization of Li-S batteries is constrained by the unstable interface, severe shuttle of polysulfides, and sluggish kinetic conversion reactions. Electrolyte regulation is a straightforward and efficient way to tackle those mentioned issues. Herein, a multifunctional electrolyte additive of 2,5-Dimercapto-1,3,4-thiadiazole (DMTD) is introduced in the ether-based electrolyte, which can be lithiated into Li₂-DMTD when contacted with the Li or Li₂S during the discharge process. The generated Li₂-DMTD can operate as a highly ionic-conducting protective coating on the Li surface, inhibiting the formation of Li dendrites, and increasing interface stability. Then, it is reversibly oligomerized with Li₂S, forming two organosulfur oligomers during the ensuing electrochemical process. Such a modified reaction routine can reduce the shuttle effect and speed up the reaction kinetics of Li₂S at the cathode, preventing cathode passivation and boosting active material utilization. As a result, The Li||Li symmetric cells with DMTD exhibit about 5-fold cycle life than the reference cell under 5 mA cm⁻² current density. Meanwhile, the initial charge voltage of Li||Li₂S battery is greatly decreased from 3.7 V to 3.0 V with DMTD, and the assembled Li-S cell shows an improved capacity retention from 45.7 % to 81.2 % after 320 cycles. Therefore, this work successfully tackled the critical issues by designing functional organosulfur electrolyte additives in LSBs, which provides theoretical guidance for the electrolyte design in LSBs.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"697 ","pages":"Article 137953"},"PeriodicalIF":9.4,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144155104","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":"Ultra-broadband near-infrared emission and enhanced thermal stability in Lu3Ga3MgSiO12:Cr3+, Yb3+ garnet phosphor via chemical unit co-substitution and energy transfer","authors":"Tongshu Zhang,&nbsp;Yuheng Zhang,&nbsp;Fulong Hao,&nbsp;Huidong Xie,&nbsp;Zhihua Leng,&nbsp;Zuobin Tang","doi":"10.1016/j.jcis.2025.137933","DOIUrl":"10.1016/j.jcis.2025.137933","url":null,"abstract":"<div><div>The development of highly efficient and thermally stable phosphors with ultra-broadband emission is critical to advancing the practical applications of portable near-infrared phosphor-converted light-emitting diodes (NIR pc-LEDs). Herein, we employ the chemical unit co-substitution strategy to quantitatively introduce Mg²⁺ and Si⁴⁺ ions into the garnet lattice, yielding the high-performance Lu₃Ga₃MgSiO₁₂:Cr³⁺ (LGMSO:Cr³⁺) phosphor, which exhibits an ultra-broadband emission with a full width at half maximum (FWHM) of 181 nm and a photoluminescence quantum yield (PLQY) of 63.7 %. Structural analysis reveals that Mg²⁺-Si⁴⁺ co-substitution induces multiple Cr³⁺ occupancy within distorted (Ga/Mg)O₆ octahedra, broadening emission band via a multisite-induced effect, as confirmed by low-temperature spectral analysis (80 K) and crystal field calculations. Furthermore, co-doping with Yb³⁺ enhances the emission bandwidth and thermal stability (from 48.4 % to 71.0 % at 423 K), attributed to the combined contributions of Cr³⁺ emission (<span><math><mrow><msub><mrow><msup><mrow><mspace></mspace></mrow><mn>4</mn></msup><mi>T</mi></mrow><mn>2</mn></msub><mrow><mo>(</mo><msup><mrow><mspace></mspace></mrow><mn>4</mn></msup><mi>F</mi><mo>)</mo></mrow><msup><mo>→</mo><mn>4</mn></msup><msub><mi>A</mi><mn>2</mn></msub></mrow></math></span>) and Yb³⁺ emission (<span><math><mrow><msup><mrow><mspace></mspace></mrow><mn>2</mn></msup><msub><mi>F</mi><mrow><mn>5</mn><mo>/</mo><mn>2</mn></mrow></msub><msup><mo>→</mo><mn>2</mn></msup><msub><mi>F</mi><mrow><mn>7</mn><mo>/</mo><mn>2</mn></mrow></msub></mrow></math></span>) excited via Cr³⁺ energy transfer. Packaged LED devices show superior night vision and non-destructive biological penetration capabilities, highlighting the phosphor’s potential for NIR pc-LED applications.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"697 ","pages":"Article 137933"},"PeriodicalIF":9.4,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115374","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":"Dynamic covalent carbon dot-based emulsifiers: A novel strategy for smart Pickering emulsions and enhanced heavy oil recovery in ultra-low permeability reservoirs","authors":"Junjie Fan ,&nbsp;Jianpeng Cui ,&nbsp;Tinglei He ,&nbsp;Tianhao Zhang ,&nbsp;Xinyu Yuan ,&nbsp;Jianwen Hu ,&nbsp;Haotian Gao ,&nbsp;Hong Zhang ,&nbsp;Chunling Li ,&nbsp;Songqing Hu ,&nbsp;Shuangqing Sun","doi":"10.1016/j.jcis.2025.137935","DOIUrl":"10.1016/j.jcis.2025.137935","url":null,"abstract":"<div><div>Carbon dots (CDs), a class of fluorescent nanomaterials distinguished by their unique properties such as tunable surface chemistry and nanoscale dimensions, have garnered significant attention. In this study, we synthesize CDs-based emulsifiers through a combination of hydrothermal synthesis and hydrophobic modification utilizing dynamic covalent imine bonds, imparting them with amphiphilicity and pH-responsiveness. These carbon dot-based emulsifiers stabilize the oil–water interface to form Pickering emulsions and enable the reversible regulation of amphiphilicity through pH-induced cleavage and reformation of imine bonds, thereby facilitating transitions between emulsification and demulsification. Furthermore, the amphiphilic CDs effectively reduce oil–water interfacial tension and exhibit potential application in mobilizing heavy oil in ultra-low permeability reservoirs. Consequently, we observed a 28.78 % decrease in injection pressure and an 18.65 % increase in recovery rates. Experimental and theoretical results reveal that the CDs adsorb onto both solid and oil phase surfaces, modulating the interfacial properties and enabling the oil film attached to the rock wall to be more easily stripped off during water flushing. Additionally, the small size of the CDs allowed them to enter finer pore throats and effectively displace the residual oil film. This unique characteristic holds significant promise for future advancements in the fields of smart-response Pickering emulsions and enhanced oil recovery in ultra-low permeability reservoirs.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"697 ","pages":"Article 137935"},"PeriodicalIF":9.4,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115442","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":"Stimuli-responsive peptide nanocarriers for tumor-specific CRISPR/Cas9 delivery and precision genome editing","authors":"Rui Wang ,&nbsp;Yujie Yang ,&nbsp;Zizai Wang ,&nbsp;Chen Ma ,&nbsp;Mengqi Wu ,&nbsp;Yangyang Du ,&nbsp;Xiaoming Zhang ,&nbsp;Meiwen Cao ,&nbsp;Hai Xu","doi":"10.1016/j.jcis.2025.137932","DOIUrl":"10.1016/j.jcis.2025.137932","url":null,"abstract":"<div><div>CRISPR/Cas9 ribonucleoprotein (RNP) delivery remains a critical challenge due to its large size, instability, and off-target effects. Here, we report a stimuli-responsive cationic amphiphilic peptide, (CR₃)₃C, designed for cancer-targeted delivery of CRISPR/Cas9 RNP. The peptide integrates three functional domains: (1) a naphthyl-diphenylalanine (Nap-FF) motif enabling self-assembly into stable nanoparticles via aromatic interactions, (2) a matrix metalloproteinase-7 (MMP7)-cleavable linker (GPLGLA) for tumor microenvironment-specific activation, and (3) a redox-responsive cationic domain ((CRRR)₃-C) for electrostatic RNP binding and glutathione (GSH)-triggered intracellular release. The (CR₃)₃C/RNP nanocomplexes (108.8 nm diameter, ζ = +10.89 mV) demonstrate exceptional stability and cellular uptake efficiency. Mechanistic studies reveal caveolae-mediated endocytosis and lipid raft-associated pathways, proton sponge effect-driven endosomal escape, and nuclear localization facilitated by Cas9′s nuclear localization signal. In HeLa-EGFP cells, (CR₃)₃C/RNP shows 33.8 % gene editing efficiency at 100 nM RNP with &gt;90 % cell viability. This work establishes a programmable, non-viral platform that synergizes enzymatic and redox responsiveness for tumor-targeted genome editing, addressing critical barriers in CRISPR therapeutics.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"697 ","pages":"Article 137932"},"PeriodicalIF":9.4,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115443","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":"Electrochemically reconstructable CuMn-bimetal-based metal-organic framework encapsulated Co3O4 composite for selective methanol electrooxidation","authors":"Rui Yang ,&nbsp;Penglong Jia ,&nbsp;Yifan Zhou ,&nbsp;Yusrin Ramli ,&nbsp;Peifen Wang ,&nbsp;Wenhao Lian ,&nbsp;Meng Chen ,&nbsp;Wei Huang ,&nbsp;Lei Liu ,&nbsp;Abuliti Abudula ,&nbsp;Guoqing Guan","doi":"10.1016/j.jcis.2025.137930","DOIUrl":"10.1016/j.jcis.2025.137930","url":null,"abstract":"<div><div>In this work, a CuMn-bimetal-based metal–organic framework (MOF) encapsulated Co₃O₄ composite (CuMn-MOF@Co₃O₄) with a three-dimensionmal hierarchical structure formed by interwoven nanosheets was in-situ grown on nickel foam (NF) through a three-step fabrication method for the electrochemical methanol oxidation reaction(MOR). The characterizations revealed the phase transformation of CuMn-MOF during the electrochemical activation generated abundant hydroxides/hydroxyoxides (Cu(OH)₂, Mn(OH)₂, MOOH), which provided optimal architecture and real active sites for MOR. At the same time, the combination of Co₃O₄ with the generated CuMn(OH)_<em>x</em> effectively enhanced the synergistic interactions between them, greatly hindering high-valent hydroxides formation, lowering methanol and intermediate adsorption energy barriers, thereby ensuring highly selective electrooxidation of methanol to formate with high activity. As a result, the electrochemically reconstructable CuMn-MOF@Co₃O₄ composite exhibited excellent performance, achieving a high MOR current density of 500 mA cm⁻² at 1.41 V vs. RHE, with a Faradaic efficiency (FE) of near 100 % and long-term stability. Moreover, in a two-electrode electrolysis system with MeOH-water solution, only 1.60 V of cell voltage was required to maintain a current density of 100 mA cm⁻² for MOR-HER, which significantly reduced energy consumption compared to the conventional OER-HER system. It opens a novel avenue for the design of advanced electrochemically reconstructable MOF-based composites for elecrooxidation process.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"697 ","pages":"Article 137930"},"PeriodicalIF":9.4,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115448","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":"Decorating tungsten single atoms on MnO2 nanorods for enhanced selective catalytic reduction of NO with NH3","authors":"Minghe Yang ,&nbsp;Man Cui ,&nbsp;Wenqian Yu ,&nbsp;Panpan Liu ,&nbsp;Shengnan Yue ,&nbsp;Mingcheng Gao ,&nbsp;Wenyan Lu ,&nbsp;Chaobin Zeng ,&nbsp;Yongzhao Wang ,&nbsp;Xuefei Zhang ,&nbsp;Xing Huang","doi":"10.1016/j.jcis.2025.137925","DOIUrl":"10.1016/j.jcis.2025.137925","url":null,"abstract":"<div><div>Manganese dioxide (MnO₂) shows significant potential for selective catalytic reduction with NH₃ (NH₃-SCR). However, the selectivity and water vapor tolerance of MnO₂ are generally unsatisfactory. This study tackles these issues by decorating tungsten single atoms (W SAs) onto MnO₂ nanorods. The resulting W/MnO₂ catalysts exhibit markedly improved performance, especially the 1.8 wt% W/MnO₂ catalyst, which exhibits superior reactivity (over 90% conversion and over 80% N₂ selectivity) across an extended operational temperature range of 75–350 °C, along with improved water tolerance. Structural characterizations based on X-ray diffraction (XRD) and aberration-corrected scanning transmission electron microscopy (AC-STEM) reveal that the initial W/MnO₂ catalyst is characterized by W SAs that are partially embedded within the MnO₂ lattice and partially dispersed on the surface. During the reaction, the catalyst undergoes structural transformations, characterized by the further incorporation of surface-dispersed W SAs into the MnO₂ lattice. The incorporation of W SAs enhances both the surface acidity and oxygen vacancy density of the catalyst, thereby improving its catalytic performance. <em>In situ</em> diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) studies suggest that the NH₃-SCR reaction proceeds <em>via</em> both the Langmuir-Hinshelwood (LH) and Eley-Rideal (ER) mechanisms. This work provides valuable insights into the structure-performance relationships of W/MnO₂ catalysts in NH₃-SCR, offering important implications for the design and fabrication of efficient SCR catalysts.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"697 ","pages":"Article 137925"},"PeriodicalIF":9.4,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144131345","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}