Journal of Colloid and Interface Science最新文献

{"title":"Oil recovery enhancement by Nanobubbles: Insights from High-Pressure micromodel studies","authors":"Ahmed Taman,&nbsp;Aktham E. Shoukry,&nbsp;Jan Kubelka,&nbsp;Mohammad Piri","doi":"10.1016/j.jcis.2025.137647","DOIUrl":"10.1016/j.jcis.2025.137647","url":null,"abstract":"<div><div><em>Hypothesis:</em> Aqueous nanobubble solutions (NBs) have demonstrated a remarkable ability to displace hydrophobic fluids (e.g. oil) from porous media compared to blank water, although the underlying mechanisms remain unclear. Through detailed characterization of fluid behavior within porous spaces under controlled conditions, microfluidics can help uncover the fundamental origins of the NB-induced effects.</div><div><em>Experiments:</em> We systematically evaluate the impact of NBs on two-phase flow dynamics within porous media by applying glass micromodels that mimic both extreme wettability conditions: strongly hydrophilic (water-wet “WW”) and strongly hydrophobic (oil-wet “OW”). An innovative system that combines membrane dispersion technique with microfluidic flow was used to generate NBs at elevated pressures for flooding tests.</div><div><em>Findings:</em> In OW scenarios, NBs demonstrated superior sweep efficiency compared to distilled water, achieving more uniform front propagation and reducing bypassed oil volumes. The improvement can be attributed to the interfacial activity of NBs along with their specific interactions with solid surfaces. In particular, NBs lowered the interfacial tension (IFT) between the oil and aqueous phases, leading to weaker capillary forces that aid in effective oil mobilization. At the pore walls, NBs induced a slippage effect that reduced the pressure drop across OW media, further facilitating displacement. Aside from these fundamental insights, our results demonstrate the utility of N₂ NBs for oil recovery and related applications at elevated pressures, which are often encountered in practical settings.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"693 ","pages":"Article 137647"},"PeriodicalIF":9.4,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868463","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":"Sustainable recovery Co3O4-based catalysts from spent lithium-ion batteries for preferential CO oxidation","authors":"Fen Liu ,&nbsp;Wenxia Zhou ,&nbsp;Xiuxing Cai ,&nbsp;Xiaohua Chen ,&nbsp;Claudia Li ,&nbsp;Qi Hu ,&nbsp;Xia Gong ,&nbsp;Qian Liu ,&nbsp;Feiyang Hu ,&nbsp;Lei Gong ,&nbsp;Sibudjing Kawi","doi":"10.1016/j.jcis.2025.137609","DOIUrl":"10.1016/j.jcis.2025.137609","url":null,"abstract":"<div><div>Retired Lithium-ion batteries (LIBs) present significant challenges related to environmental pollution, making the recycling of battery materials essential for environmental sustainability and energy recovery. Cobalt has been identified as an effective catalyst for oxidation reactions; accordingly, Co₃O₄ was recovered from batteries directly for use in preferential CO oxidation (CO-PROX). To enhance the low-temperature catalytic activity, supported CuO/Co₃O₄ catalysts were synthesized, resulting in a remarkable boost in catalytic performance, with thorough CO conversion (T_100%) at 160 °C. However, the way a reaction occurs remains unclear, and the active sites for CO adsorption require further investigation. Characterization techniques and density functional theory (DFT) calculations indicated that CuO/Co₃O₄ exhibits higher lattice oxygen (O_latt) content and strong metal-support interactions, which facilitate CO adsorption while suppressing hydrogen activation. Moreover, <em>in-situ</em> diffuse reflectance infrared Fourier transform spectroscopy (<em>in-situ</em> DRIFTS) analysis was used to analyze reaction intermediates, verifying that CuO/Co₃O₄ significantly enhances both CO conversion and CO₂ selectivity. This research presents a viable strategy for the recycling of retired LIBs and the advancement of efficient catalysts for CO-PROX.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"693 ","pages":"Article 137609"},"PeriodicalIF":9.4,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143855471","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":"Electric field derived from NiCo2S4-MoS2 n-n heterojunction promoted electrocatalytic methanol oxidation assisted energy-saving hydrogen production","authors":"Fangshuo Jia ,&nbsp;Yujuan Zhang ,&nbsp;Xiaolong Ma ,&nbsp;Zihao Zheng ,&nbsp;Fuqiang An ,&nbsp;Tuoping Hu","doi":"10.1016/j.jcis.2025.137650","DOIUrl":"10.1016/j.jcis.2025.137650","url":null,"abstract":"<div><div>Water electrolysis coupling methanol oxidation is an energy-efficient hydrogen generation technology, while obtaining high-value formic acid, however, superior catalysts are often required to achieve efficient hydrogen production. Herein, the <em>n</em>-<em>n</em> heterojunction (NiCo₂S₄-MoS₂) composed of NiCo₂S₄ nanoparticles uniformly dispersed on ultrathin MoS₂ nanosheet arrays has been prepared through hydrothermal-pyrolysis process. At a current density (j) of 10 mA cm⁻², the potentials of NiCo₂S₄-MoS₂ for methanol oxidation reaction (MOR) and hydrogen evolution reaction (HER) are respectively 1.282 V and −36 mV with very high selectivity for formic acid. Importantly, under the same conditions, by using the <em>n</em>-<em>n</em> heterojunction as electrodes, the voltage (1.355 V) of the methanol electrolysis is 216 mV lower than that of the water electrolysis. Meanwhile, at higher j of 100 mA cm⁻², the voltage of the methanol electrolysis is only 6.8 % higher than the original after 150 h chronopotentiometry (CP) test. The outstanding performance of NiCo₂S₄-MoS₂ exceeds that previously reported in most literature, which is primarily attributed to the fact that the built-in electric field (BEF) derived from the Fermi level (E_F) difference between NiCo₂S₄ and MoS₂, accelerates the charge transfer, optimizes the electronic structure of the heterojunctions, and thus improving the electrical conductivity. Furthermore, MoS₂ nanosheet arrays with large specific surface area provide a fast charge/mass transfer channel, uniformly dispersed NiCo₂S₄ and defect sites produce abundant active sites. And the superior hydrophilicity and aerophobicity of the heterojunction surface accelerate the reaction kinetics. Finally, density functional theory (DFT) calculations show that the formation of the heterojunction optimizes the electron density and d-band center of composites, thus enhancing H* adsorption and CH₃OH dehydrogenation kinetics.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"693 ","pages":"Article 137650"},"PeriodicalIF":9.4,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143855472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A cancer theranostic nanoplatform for second near-infrared fluorescence imaging-guided carbon monoxide-sensitized mild photothermal therapy with ICD induction","authors":"Shaoyan Gan ,&nbsp;Xiuli Wen ,&nbsp;Li Li ,&nbsp;Keyi Ao ,&nbsp;Jiaqi Qin ,&nbsp;Yi Hao ,&nbsp;Xia Guo","doi":"10.1016/j.jcis.2025.137652","DOIUrl":"10.1016/j.jcis.2025.137652","url":null,"abstract":"<div><div>Mild-temperature photothermal therapy (mild PTT), utilizing photothermal agents to convert external light into mild heat (&lt;45 °C), holds significant potential as a localized treatment modality to induce cellular thermal damage. This therapeutic strategy not only directly eliminates targeted cells but also induces immunogenic cell death (ICD), activating the immune response. However, the presence of heat shock proteins (HSPs) can significantly reduce the effectiveness of photothermal therapy. Therefore, it is crucial to inhibit HSP repair and minimize damage to surrounding normal cells in order to enhance the efficiency of low-temperature PTT. Additionally, carbon monoxide (CO) has been shown to suppress the upregulation of HSPs in cancer cells under heat treatment. Furthermore, the utilization of second near-infrared (NIR-II) fluorescence particles can improve the precision and suitability of PTT due to their increased penetration depth and novel imaging capabilities. In this study, we developed a NIR-light-activated CO release system using CO-loaded mesoporous organosilica nanoparticles (CO-MON) for enhancing the effectiveness of mild PTT by suppressing HSPs repair through selectively targeted CO delivery. Triiron dodecacarbonyl (Fe₃(CO)₁₂), as the source of CO was employed for encapsulation within the pores of the MON. These MON showed emission in the NIR-II range, while also displaying remarkable photostability and a high efficiency in photothermal conversion (34.7 %). Through intratumoral administration, the CO–MON platform demonstrated efficient tumor accumulation and localized photothermal efficacy <em>in vivo</em>. In vitro and <em>in vivo</em> studies demonstrated that this exceptional photothermal effect not only effectively eliminated tumor but also augmented tumor ICD.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"693 ","pages":"Article 137652"},"PeriodicalIF":9.4,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143864688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A simple two-dimensional metal–organic framework–based phototherapy nanoplatform with a triple-synergistic mechanism for enhanced wound infection treatment","authors":"Xuankun Fang ,&nbsp;Dandan Zhou ,&nbsp;Yiwei An ,&nbsp;Zong Dai ,&nbsp;Duanping Sun ,&nbsp;Yanli Tong","doi":"10.1016/j.jcis.2025.137656","DOIUrl":"10.1016/j.jcis.2025.137656","url":null,"abstract":"<div><div>Selecting an appropriate treatment for bacterial infections is critical. However, the rising prevalence of antimicrobial resistance has rendered many existing therapies less effective, highlighting the urgent need for novel antimicrobial strategies that are less prone to inducing antimicrobial resistance. Herein, we propose a simple, energy-efficient, photoresponsive antibacterial strategy based on metal–organic frameworks. Specifically, we developed an Au@Cu-THQ system activated by near-infrared laser irradiation, capable of exerting a synergistic triple-mode antibacterial effect-photothermal, photodynamic, and glutathione (GSH) depletion for the effective treatment of bacterial infections. The photothermal effect notably enhances the generation of reactive oxygen species and accelerates GSH depletion within bacterial cells, leading to a substantial disruption of their antioxidant defense systems and significantly amplifying the photodynamic therapeutic effect. Moreover, this material demonstrated excellent and stable photothermal performance both in vitro and in vivo, characterized by high photothermal conversion efficiency and effective GSH depletion activity. These features contribute to its potent antibacterial and anti-inflammatory effects, offering a promising multimodal strategy for the future development of in vivo anti-infective formulations.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"694 ","pages":"Article 137656"},"PeriodicalIF":9.4,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875027","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":"Revisit the actual roles of catalytic sites in a Fenton-like system","authors":"Lan Liang ,&nbsp;Rui Wang ,&nbsp;Yongsheng Xu ,&nbsp;Ning Li ,&nbsp;Yanshan Wang ,&nbsp;Wenchao Peng ,&nbsp;Zhanjun Cheng ,&nbsp;Beibei Yan ,&nbsp;Guanyi Chen ,&nbsp;Li’an Hou","doi":"10.1016/j.jcis.2025.137639","DOIUrl":"10.1016/j.jcis.2025.137639","url":null,"abstract":"<div><div>The perception of catalytic site contributions in peroxymonosulfate (PMS)/biochar systems is biased due to the neglect of active site interactions. Here, random forest regression (RF), supporting vector regression (SVR), XGBoost (XGB), and gradient boosting decision tree (GBDT) are selected to construct models using active sites (A model) instead of elements (E model) as input features to revisit the relationship between C, N, and O-containing sites on biochar surface and Fenton-like activity. Consequently, the A models achieve twice the accuracy of the E models. For individual sites, a low C<img>C or high C<img>N concentration promotes the degradation of electron-donating organics in PMS systems, while system activity initially increases and then declines with rising C<img>O concentration. Considering site interactions, C<img>C&amp;C<img>O, C<img>C&amp;C<img>N, and C<img>O&amp;C<img>N show excellent synergy for PMS activation. Specifically, the Gibbs free energy (ΔG) of PMS at C<img>C&amp;C<img>O (0.44 eV), C<img>N&amp;C<img>O (0.78 eV), and C<img>C&amp;C<img>N (0.82 eV) is significantly lower than that of single C<img>C (2.26 eV), C<img>N (1.44 eV), and C<img>O&amp;C<img>O (1.14 eV) during the transition state formation process. The reduced ΔG facilitates O<img>O bond cleavage, enhancing the generation of active species. This study employs A_SVR model and density functional theory (DFT) calculations to clarify the structure–activity relationships of biochar by considering the synergistic effects of active site. The results contribute to the precise design of Fenton-like catalysts for targeted pollutant degradation, improving water purification efficiency.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"693 ","pages":"Article 137639"},"PeriodicalIF":9.4,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143852211","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 induced construction of NiCo2O4/NiSe2 heterostructure electrocatalyst for high-efficiency oxygen evolution reaction","authors":"Dongxu Zhu ,&nbsp;Guyu Liu ,&nbsp;Guangjiang Zhang ,&nbsp;Zihao Yin ,&nbsp;Huan Yang ,&nbsp;Shuai Gao ,&nbsp;Chenhe Zhang ,&nbsp;Xinguo Xi","doi":"10.1016/j.jcis.2025.137648","DOIUrl":"10.1016/j.jcis.2025.137648","url":null,"abstract":"<div><div>Spinel-type transition metal oxide (AB₂O₄) are promising non-precious metal catalysts for oxygen evolution reaction (OER), addressing the challenges of high cost and poor stability in electrocatalytic water splitting. However, their widespread application is hindered by low electrical conductivity and suboptimal performance. In this study, we developed an oxygen vacancy anchoring strategy to construct a highly efficient and durable NiCo₂O₄-NiSe₂ heterojunction catalyst on a nickel foam substrate. The three-dimensional cross-linked porous nanorod array facilitates mass and charge transportation. The abundant interconnected interfaces enhance electron transfer kinetics and adsorption of OH intermediates, as confirmed by theoretical simulations. As a result, the as-synthesized NiCo₂O₄@NiSe₂/NF exhibits an overpotential of only 299 mV at a current density of 60 mA cm⁻², significantly outperforming the single-phase NiCo₂O₄ and demonstrating exceptional durability.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"693 ","pages":"Article 137648"},"PeriodicalIF":9.4,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143855661","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":"Morphology dependence of zeolitic imidazolate framework-67 nanoreactor for carbon dioxide reduction and hexavalent chromium immobilisation","authors":"Yonggong Tang ,&nbsp;Fan Wu ,&nbsp;Weinan Xing ,&nbsp;Chunyu Zhao ,&nbsp;Yuwei Pan ,&nbsp;Jiangang Han ,&nbsp;Guangyu Wu ,&nbsp;Yudong Huang","doi":"10.1016/j.jcis.2025.137649","DOIUrl":"10.1016/j.jcis.2025.137649","url":null,"abstract":"<div><div>Energy conversion and pollutant remediation are essential means of environmental protection. Zeolitic imidazolate framework-67 (ZIF-67) is an ideal catalyst for these processes. In this study, four morphologies of ZIF-67 were synthesised for the photocatalytic conversion of carbon dioxide (CO₂) and adsorption of hexavalent chromium (Cr(VI)). Under light irradiation, rhombic ZIF-67 (ZIF-R) converted carbon dioxide to carbon monoxide (CO) and methane (CH₄), with production rates of 1182.62 and 27.21 μmol g⁻¹ h⁻¹, respectively. Furthermore, comprehensive experiments were conducted to examine the effects of reaction duration, pH, starting concentration, coexisting ions and temperature, along with corresponding kinetic and thermodynamic analyses. Results demonstrated that ZIF-R exhibited outstanding Cr(VI) adsorption capacity (46.87 mg g⁻¹). After four cycles of adsorption and photocatalytic experiments, ZIF-R maintained excellent reusability. Thus, ZIF-R is an efficient photocatalyst and stable adsorbent, offering a promising solution for mitigating greenhouse gas emissions and removing environmental pollutants.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"693 ","pages":"Article 137649"},"PeriodicalIF":9.4,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143852241","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":"Engineering Z-scheme heterojunction via CuFe2O4-activated decahedral BiVO4 for tuned radical generation pathways in peroxymonosulfate activation for norfloxacin degradation","authors":"Xuran Wu ,&nbsp;Yawen Hu ,&nbsp;Can Niu ,&nbsp;Xian Zhang ,&nbsp;Linsen Li","doi":"10.1016/j.jcis.2025.137651","DOIUrl":"10.1016/j.jcis.2025.137651","url":null,"abstract":"<div><div>Constructing heterojunctions to activate peroxymonosulfate (PMS) addresses the challenge of poor photogenerated charge separation in individual materials, yet the effect of band alignment on reactive oxygen species (ROS) generation in composites is often overlooked. In this study, a novel Z-scheme system is successfully developed for PMS activation by integrating copper ferrite (CuFe₂O₄) with bismuth vanadate (BiVO₄) through hydrothermal and calcination methods. Notably, the production of hydroxyl radicals (HO•) and superoxide radicals (O₂⁻•) is significantly boosted by water oxidation via valence band holes of BiVO₄ and oxygen (O₂) reduction by conduction band electrons of CuFe₂O₄, respectively. Moreover, the non-radical pathways via PMS activation are enhanced by the additional active sites generated through bimetallic redox cycling of ≡Cu⁺/≡Cu²⁺ and ≡Fe²⁺/≡Fe³⁺, coupled with the formation of oxygen vacancies on the CFO/BVO surface. The CuFe₂O₄@BiVO₄/Vis/PMS system achieves 96.15 % norfloxacin (NOR) degradation efficiency within 30 min, significantly outperforming the individual CuFe₂O₄ and BiVO₄ catalysts by 6.39 and 1.38 times, respectively. In the CuFe₂O₄@BiVO₄/Vis/PMS system, the HO• content increases by 2.20 times, the O₂⁻• level by 1.49 times, and singlet oxygen (¹O₂) production by at least 3.55 times compared to the BiVO₄/Vis/PMS system. This system demonstrates excellent stability, recyclability, and broad pollutant degradation capability, offering a novel strategy for PMS activation and targeted ROS generation while advancing the design of visible-light-driven reusable photocatalysts for wastewater treatment.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"693 ","pages":"Article 137651"},"PeriodicalIF":9.4,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143855657","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":"Nanoscale palladium-Mo6S8/carbon nanowires toward efficient electrochemical hydrogen evolution and hydrogen peroxide detection","authors":"Yijin Shu ,&nbsp;Junjie Shao ,&nbsp;Xiaoqiong Wu ,&nbsp;Jingwen Tan ,&nbsp;Siyao Zeng ,&nbsp;Xingfa Zi ,&nbsp;Zhijun Chen ,&nbsp;Yao Zhang ,&nbsp;Xiaoxue Song ,&nbsp;Yongtai He ,&nbsp;Qijie Mo ,&nbsp;Qingsheng Gao","doi":"10.1016/j.jcis.2025.137640","DOIUrl":"10.1016/j.jcis.2025.137640","url":null,"abstract":"<div><div>Chevrel phase (CP) molybdenum sulfides (Mo₆S₈) have attracted extensive research attention in the field of energy conversion and storage due to their unique electronic structures and rich open channels. However, comprehensive understanding of intrinsic kinetic mechanisms governing the electrocatalytic bi-functional hydrogen evolution reaction (HER) and hydrogen peroxide (H₂O₂) sensing on CP-based composites is still lacking. Herein, nanosized palladium (Pd) and Mo₆S₈ particles were assembled in carbon nanowires (C NWs) via electrospinning followed by pyrolysis. The as-obtained novel Pd-Mo₆S₈/C NWs exhibited excellent performance in terms of a low overpotential of −194 mV at <em>η</em>₁₀ for HER, and an ultrahigh sensitivity of 2231 μA mM⁻¹ cm⁻² with a limit of detection of 25 nM for H₂O₂ sensing. The experimental and theoretical findings demonstrated that Pd and Mo₆S₈ nanoparticles (NPs) exhibited exceptional catalytic activity and strong electronic interactions. The synergistic effects of these two components could effectively modulate the binding strength of reactants and intermediates on the catalyst surface, ultimately leading to improved electrochemical catalytic performance toward reduction of small molecules. Moreover, verification of the stable tolerance in various environments and good selectivity of the electrocatalyst promoted the further use of Pd-Mo₆S₈/C NWs-based electrochemical sensing system for sensing additional H₂O₂ in milk samples, proving the widespread potential of this material for practical applications. This study significantly advances the understanding of nanoscale and bi-functional CP-based composites.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"693 ","pages":"Article 137640"},"PeriodicalIF":9.4,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143855660","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}