Journal of Colloid and Interface Science最新文献

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Polyacrylonitrile-supported symmetrical configuration pyridine bridged bi-iron phthalocyanine nanofibers for efficient degradation of carbamazepine in the presence of peroxymonosulfate 聚丙烯腈支撑的对称构型吡啶桥接双铁酞菁纳米纤维在过一硫酸盐存在下高效降解卡马西平
IF 9.4 1区 化学
Journal of Colloid and Interface Science Pub Date : 2025-02-11 DOI: 10.1016/j.jcis.2025.02.040
Yu Liu , Zhexin Zhu , Wenjuan Wang , Wenjie Qian , Qian Wang , Wangyang Lu
{"title":"Polyacrylonitrile-supported symmetrical configuration pyridine bridged bi-iron phthalocyanine nanofibers for efficient degradation of carbamazepine in the presence of peroxymonosulfate","authors":"Yu Liu ,&nbsp;Zhexin Zhu ,&nbsp;Wenjuan Wang ,&nbsp;Wenjie Qian ,&nbsp;Qian Wang ,&nbsp;Wangyang Lu","doi":"10.1016/j.jcis.2025.02.040","DOIUrl":"10.1016/j.jcis.2025.02.040","url":null,"abstract":"<div><div>In this study, the 4-aminopyridine (Py) was employed to link with terephthaloyl chloride (TPC) through amide bonding to generate the symmetric ligand Py-TPC, and the iron phthalocyanine (FePc) was axially coordinated with Py-TPC to synthetic the composite catalyst FePc-Py-TPC. By introducing Py-TPC, the π-π conjugated stack structure within phthalocyanine molecules was disrupted and more active sites were exposed. FePc-Py-TPC was dispersed in polyacrylonitrile (PAN) through electrospinning to obtain FePc-Py-TPC/PAN nanofibers, which solved the problem of difficult recycling and utilization of powder catalysts. FePc-Py-TPC/PAN can effectively activate peroxymonosulfate (PMS) at room temperature, and the removal rate of carbamazepine (CBZ) approaches 100 % within 40 min. After five recycles for CBZ degradation over the FePc-Py-TPC/PAN/PMS system, the removal ratios of CBZ remained at 90 %. <img>O<sup>2−</sup> is the main active radical, SO<sub>4</sub><img><sup>−</sup>, <img>OH, and <sup>1</sup>O<sub>2</sub> play a secondary role. Six intermediate products and two final products of CBZ were identified by ultra-performance liquid chromatography and high-definition mass spectrometry, and the possible degradation pathways were speculated. All CBZ and the aromatic intermediates were eventually converted into small acids.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"687 ","pages":"Pages 158-167"},"PeriodicalIF":9.4,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143395840","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}
引用次数: 0
Co-delivery of doxorubicin and glycyrrhetinic acid via acid/glutathione dual responsive nano-prodrug with sodium bicarbonate carry-on for advanced combinational cancer treatment
IF 9.4 1区 化学
Journal of Colloid and Interface Science Pub Date : 2025-02-11 DOI: 10.1016/j.jcis.2025.02.045
Chuan Hu , Jiaqi Ma , Ziye Su , Junyu Wang , Xueqian Zhang , Lin Pang , Yan Qu , Jinfeng Shi , Jinming Zhang
{"title":"Co-delivery of doxorubicin and glycyrrhetinic acid via acid/glutathione dual responsive nano-prodrug with sodium bicarbonate carry-on for advanced combinational cancer treatment","authors":"Chuan Hu ,&nbsp;Jiaqi Ma ,&nbsp;Ziye Su ,&nbsp;Junyu Wang ,&nbsp;Xueqian Zhang ,&nbsp;Lin Pang ,&nbsp;Yan Qu ,&nbsp;Jinfeng Shi ,&nbsp;Jinming Zhang","doi":"10.1016/j.jcis.2025.02.045","DOIUrl":"10.1016/j.jcis.2025.02.045","url":null,"abstract":"<div><div>The combination of doxorubicin (Dox) and glycyrrhetinic acid (GA) has been widely explored for treating various cancers, while the heterogeneous distribution, uncontrolled release and acid tumor microenvironment often hinder their synergistic effects. Herein, we introduce an acid/glutathione (GSH)-dual responsive nano-prodrug (AS1411@Dox+GA/NPs) enabling precise co-delivery of Dox and GA for enhanced combination therapy. The GSH-activated Dox prodrug [Poly(lactic-<em>co</em>-glycolic acid)-disulfide-Dox, PLGA-ss-Dox], GA, and sulfur-terminated D-α-tocopherol polyethylene glycol succinate (TPGS-SH) are combined to form a nanoemulsion with sodium bicarbonate (NaHCO<sub>3</sub>) in the aqueous phase. The AS1411 aptamer is modified on the surface for tumor-specific targeting. Upon reaching the tumor via enhanced penetration and retention effects, AS1411 aptamer medicates specific endocytosis of AS1411@Dox+GA/NPs into tumor cells. Intracellularly, the acidic endosomal environment promotes carbon dioxide (CO<sub>2</sub>) production from NaHCO<sub>3</sub>, disrupting the nanoemulsion and causing a burst release of GA and PLGA-ss-Dox prodrug. Concurrently, high levels of GSH in the cytoplasm triggers the cleavage of the disulfide linker, thereby releasing Dox. Notably, the released NaHCO<sub>3</sub> consumed hydrogen ion (H<sup>+</sup>), amplifying the sensitivity of tumor cells to Dox. As a consequence, AS1411@Dox+GA/NPs exhibits remarkable synergistic therapeutic efficacy in mouse models of both liver cancer and breast cancer. This work presents an appealing approach utilizing stimuli-sensitive nano-prodrug for advanced combinational cancer treatment.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"687 ","pages":"Pages 248-260"},"PeriodicalIF":9.4,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143421378","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}
引用次数: 0
Competitive adsorption and strain modulation induced by low electronegative elements to improve phosphate tolerance in HT-PEMFC
IF 9.4 1区 化学
Journal of Colloid and Interface Science Pub Date : 2025-02-11 DOI: 10.1016/j.jcis.2025.02.061
Ji Qiu , Zhangyue Wei , Siyu Wang , Shuaiqi Gong , Sheng Zhu , Jinting Xu , Qunjie Xu , Penghui Shi , Yulin Min
{"title":"Competitive adsorption and strain modulation induced by low electronegative elements to improve phosphate tolerance in HT-PEMFC","authors":"Ji Qiu ,&nbsp;Zhangyue Wei ,&nbsp;Siyu Wang ,&nbsp;Shuaiqi Gong ,&nbsp;Sheng Zhu ,&nbsp;Jinting Xu ,&nbsp;Qunjie Xu ,&nbsp;Penghui Shi ,&nbsp;Yulin Min","doi":"10.1016/j.jcis.2025.02.061","DOIUrl":"10.1016/j.jcis.2025.02.061","url":null,"abstract":"<div><div>The cathode Pt-based electrocatalyst, a core component of high-temperature proton exchange membrane fuel cells (HT-PEMFCs), significantly influences fuel cell efficiency. At high temperatures and strongly acidic pH, phosphoric acid tends to adsorb onto the Pt surface by forming Pt<img>O bonds, covering the catalyst’s active sites. Phosphoric acid anions’ toxicity towards Pt significantly impairs the oxygen reduction reaction (ORR) kinetics, posing a major obstacle to the commercial viability of this technology. In this study, we activated the carbon layer by introducing boron (B) to anchor intermetallic compounds clusters, which competitively adsorb desorbed phosphate anions in HT-PEMFCs. This approach mitigates phosphoric acid poisoning. Additionally, the core–shell configuration induces compressive strain in PtMn intermetallic compounds, inhibits transition metal solvation, and regulates the d-band center, optimizing the adsorption energy of oxygen reduction intermediates and enhancing the catalyst’s activity and stability in high-temperature phosphoric acid. At 80 °C, experiments showed the E<sub>1/2</sub> value of PtMn/BC was 0.854 V, 53 mV higher than commercial Pt/C. Additionally, the mass activity (MA) and specific activity (SA) were 5.2 and 2.6 times higher than those of commercial Pt/C, respectively. The maximum power density of the HT-PEMFC in an H<sub>2</sub>/O<sub>2</sub> atmosphere reached 1108.3 mW cm<sup>−2</sup>, significantly higher than that of commercial Pt/C. This value is also higher than most reported ORR catalysts, demonstrating the potential of this catalyst for HT-PEMFC applications.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"687 ","pages":"Pages 518-530"},"PeriodicalIF":9.4,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438182","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}
引用次数: 0
Remarkably boosting capacitive energy storage of layer-structured nanocomposites via the incorporation of Au quantum dots
IF 9.4 1区 化学
Journal of Colloid and Interface Science Pub Date : 2025-02-11 DOI: 10.1016/j.jcis.2025.02.063
Peng Yin , Meng Hao , Xiaohan Bie , Qingyang Tang , Shuimiao Xia , Linwei Zhu , Davoud Dastan , Yinguo Li , Zhicheng Shi
{"title":"Remarkably boosting capacitive energy storage of layer-structured nanocomposites via the incorporation of Au quantum dots","authors":"Peng Yin ,&nbsp;Meng Hao ,&nbsp;Xiaohan Bie ,&nbsp;Qingyang Tang ,&nbsp;Shuimiao Xia ,&nbsp;Linwei Zhu ,&nbsp;Davoud Dastan ,&nbsp;Yinguo Li ,&nbsp;Zhicheng Shi","doi":"10.1016/j.jcis.2025.02.063","DOIUrl":"10.1016/j.jcis.2025.02.063","url":null,"abstract":"<div><div>Polymer dielectrics are widely employed in pulsed energy storage and conversion systems due to their ultrahigh power density, fast discharge speed, and reliability. However, their low discharge energy densities pose a significant limitation for application in miniaturized and integrated devices. Here, a significantly enhanced energy storage property is achieved via incorporating Au quantum dots (QDs) into a sandwich-structured nanocomposite, where the PMMA/P(VDF-HFP) (A/F) blended polymer serves as middle layer and the P(VDF-HFP) acts as outer layer. Benefiting from the micro-capacitor and Coulomb blockade effects induced by the Au QDs, the resulting nanocomposite simultaneously achieves enhanced dielectric constant of 10.34 at 10 kHz and breakdown strength of 577.3 MV m<sup>−1</sup>. Subsequently, a significantly enhanced discharge energy density of 16.07 J cm<sup>−3</sup> is further acquired, which is approximately 177.1 % that of the nanocomposite without Au QDs. This work proposes a novel structure design combining Au quantum dots with a sandwich-structured composites, which also provides a feasible paradigm for optimizing the energy storage performance of polymer dielectrics.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"687 ","pages":"Pages 230-237"},"PeriodicalIF":9.4,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143421416","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}
引用次数: 0
Conductive hydrophobic graphene oxide films via laser-scribed surface modification
IF 9.4 1区 化学
Journal of Colloid and Interface Science Pub Date : 2025-02-10 DOI: 10.1016/j.jcis.2025.02.055
Henry Apsey , Donald Hill , Thomas M. McCoy , Marcos Villeda-Hernandez , Charl F.J. Faul , Shirin Alexander
{"title":"Conductive hydrophobic graphene oxide films via laser-scribed surface modification","authors":"Henry Apsey ,&nbsp;Donald Hill ,&nbsp;Thomas M. McCoy ,&nbsp;Marcos Villeda-Hernandez ,&nbsp;Charl F.J. Faul ,&nbsp;Shirin Alexander","doi":"10.1016/j.jcis.2025.02.055","DOIUrl":"10.1016/j.jcis.2025.02.055","url":null,"abstract":"<div><div>Graphene oxide (GO) can be surface modified for various purposes, including enhancing its properties or tailoring its behaviour for specific applications such as biosensing. Herein we report the behaviour of a carboxylate functionalized graphene oxide that is both water repellent and electrically conductive. The GO is first produced using a modified Hummers method and then functionalized with a hyperbranched isostearic alcohol through an esterification reaction. The as-deposited functionalized GO films were observed to cause “petal-like” wetting of water, whereby droplets exhibited contact angles (CAs) greater than 150° and remaining pinned to the surface. To improve their conductivity, films of the functionalized GO deposited onto glass were laser-scribed to reduce some of the specific, adjoining regions of oxidic carbon to partially restore some of the sp<sup>2</sup> C network. This improved the conductivity of the as-deposited GO films by approximately four orders of magnitude from 0.002 to ∼20 S/m using the low laser scan speed of 250 mm/min. It was observed that with a high laser scan speed of 500 mm/min some of the hydrophobic character was retained (CAs ∼110°), whilst maintaining conductivities of up to 0.17 S/m. Consequently, these materials show promise for applications such as biosensing materials, where tuneable hydrophobicity combined with conductivity are required characteristics.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"687 ","pages":"Pages 189-196"},"PeriodicalIF":9.4,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143403163","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}
引用次数: 0
Insight into the performance of VOx-WOx/TiO2 catalysts modified by various cerium precursors: A combined study on synergistic NOx and chlorobenzene removal
IF 9.4 1区 化学
Journal of Colloid and Interface Science Pub Date : 2025-02-10 DOI: 10.1016/j.jcis.2025.02.060
Jianwen Lai , Hongbo Qi , Yunfeng Ma , Xiaoqing Lin , Xiaoying Wang , Zhongkang Han , Heidelore Fiedler , Xiaodong Li
{"title":"Insight into the performance of VOx-WOx/TiO2 catalysts modified by various cerium precursors: A combined study on synergistic NOx and chlorobenzene removal","authors":"Jianwen Lai ,&nbsp;Hongbo Qi ,&nbsp;Yunfeng Ma ,&nbsp;Xiaoqing Lin ,&nbsp;Xiaoying Wang ,&nbsp;Zhongkang Han ,&nbsp;Heidelore Fiedler ,&nbsp;Xiaodong Li","doi":"10.1016/j.jcis.2025.02.060","DOIUrl":"10.1016/j.jcis.2025.02.060","url":null,"abstract":"<div><div>Cerium is widely used as a modifier to enhance the catalytic performance of the selective catalytic reduction (SCR) catalysts due to its exceptional low-temperature properties. However, the effects of different cerium precursors on catalytic performance remains unclear. In this study, VO<sub>x</sub>-WO<sub>x</sub>/TiO<sub>2</sub> catalysts are modified using Ce(NO<sub>3</sub>)<sub>3</sub>·6H<sub>2</sub>O (cata-N), CeO<sub>2</sub> (cata-O), and Ce(OH)<sub>4</sub> (cata-OH), and their synergistic removal of NO<sub>x</sub> and chlorobenzene (CB), as well as their resistance to water and sulfur poisoning, were systematically investigated. Among the tested catalysts, cata-N demonstrated superior CB (45.0–93.3 %) and NO<sub>x</sub> (31.9–90.37 %) removal efficiencies under synergistic conditions, along with excellent water resistance (T<sub>90</sub> = 193 °C with 5 % H<sub>2</sub>O). In contrast, cata-OH exhibited the highest sulfur resistance, maintaining a denitrification efficiency of 20 % after 10 h of sulfur exposure, compared to 9 % for cata-N and 8 % for cata-O. Characterization revealed that Ce(NO<sub>3</sub>) <sub>3</sub>·6H<sub>2</sub>O improved cerium dispersion, leading to enhanced the redox properties and acidity (especially Brønsted acid sites (BAS)) in cata-N. Density functional theory (DFT) calculations and In-situ Diffuse Reflectance Infrared Fourier Transform Spectroscopy (<em>In-situ</em> DRIFTS) results revealed that the well-dispersed cerium atoms contributed additional BAS in the form of Ce–OH, while also forming Ti–O–Ce bonds. These Ti–O–Ce bonds facilitated the formation of Ti–OH on the TiO<sub>2</sub> surface. Ti–OH significantly enhanced the adsorption of NH<sub>3</sub> and CB, thereby promoting both the NH<sub>3</sub>-SCR and CB oxidation processes. This study offers new insights into the role of cerium precursors and provides a practical strategy for tuning BAS of catalysts in multiple pollutants removal.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"687 ","pages":"Pages 143-157"},"PeriodicalIF":9.4,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143395904","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}
引用次数: 0
Synergistic surface-modified bio-based flame retardant for rapid establishment of emergency firebreaks
IF 9.4 1区 化学
Journal of Colloid and Interface Science Pub Date : 2025-02-10 DOI: 10.1016/j.jcis.2025.02.056
Wenbin Ye , Yong Li , Dongxu Zhang , Hongsheng Xu , Lei Song , Yuan Hu , Weizhao Hu
{"title":"Synergistic surface-modified bio-based flame retardant for rapid establishment of emergency firebreaks","authors":"Wenbin Ye ,&nbsp;Yong Li ,&nbsp;Dongxu Zhang ,&nbsp;Hongsheng Xu ,&nbsp;Lei Song ,&nbsp;Yuan Hu ,&nbsp;Weizhao Hu","doi":"10.1016/j.jcis.2025.02.056","DOIUrl":"10.1016/j.jcis.2025.02.056","url":null,"abstract":"<div><div>Extreme climatic alteration has provoked an increase in global forest grassland fires. The establishment of emergency firebreaks is essential for managing the occurrence of sudden forest grassland fires. However, conventional methods entail substantial labor, exorbitant costs, and limited emergency response, impeding the prompt and efficient containment of fire outbreaks. Therefore, constructing rapid implementation of emergency firebreaks is pivotal for the precise prevention and control of forest grassland fires. Herein, a multi-element synergistic surface-modified bio-based flame retardant with catalytic carbonization was fabricated, which can catalyze and bolster the dehydration of phosphate compounds into char during combustion. The fire resistance of vegetation is significantly enhanced by synergizing with ammonium polyphosphate (APP), resulting in peak heat release rate, total heat release, and total smoke production respectively exhibiting 35.5 %, 22.9 %, and 47.5 % reduction. The catalytic carbonization behavior and mechanism of it were further investigated in this work. Furthermore, the synergistic effect of the fire retardant was confirmed through fire spread experiments, demonstrating the capability to suppress flame propagation by restraining the decomposition of vegetation and debilitating thermal radiation. Overall, this study aims at providing a cost-effective, rapid, and efficient method for establishing emergency firebreaks in challenging terrains.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"687 ","pages":"Pages 207-216"},"PeriodicalIF":9.4,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143403164","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}
引用次数: 0
Modulation of the structure and morphology of NiCo2S4 by varying the anion types of nickel and cobalt salts to achieve high-rate supercapacitive performance
IF 9.4 1区 化学
Journal of Colloid and Interface Science Pub Date : 2025-02-10 DOI: 10.1016/j.jcis.2025.02.057
Yuanzhe Fu , Xin Wang , Wei Feng , Zewen Ding , Xiang Feng , Xiaozhong Wu , Pengfei Zhou , Fangyong Yu , Jin Zhou , Shuping Zhuo
{"title":"Modulation of the structure and morphology of NiCo2S4 by varying the anion types of nickel and cobalt salts to achieve high-rate supercapacitive performance","authors":"Yuanzhe Fu ,&nbsp;Xin Wang ,&nbsp;Wei Feng ,&nbsp;Zewen Ding ,&nbsp;Xiang Feng ,&nbsp;Xiaozhong Wu ,&nbsp;Pengfei Zhou ,&nbsp;Fangyong Yu ,&nbsp;Jin Zhou ,&nbsp;Shuping Zhuo","doi":"10.1016/j.jcis.2025.02.057","DOIUrl":"10.1016/j.jcis.2025.02.057","url":null,"abstract":"<div><div>In this work, the structure and morphology of NiCo<sub>2</sub>S<sub>4</sub> (NCS) were modulated by varying the anion types (Cl<sup>−</sup>, CH<sub>3</sub>COO<sup>−</sup>, and NO<sub>3</sub><sup>−</sup>) of nickel and cobalt salts. Extensive material characterization and analyses revealed that the grain size of the obtained NCSs was determined by different solvation free energies, capping effects, and steric hindrance during the crystal growth process. Among these three anions, Cl<sup>−</sup>, with the smallest ionic size, exhibited the lowest capping effect, steric hindrance, and solvation free energy, leading to the largest average grain size of 15.34 nm for Cl<sup>−</sup>-based NiCo<sub>2</sub>S<sub>4</sub> (NCS-C). Moreover, the sea urchin-like morphology of NCS-C provided a high reaction interface for electrochemical energy storage. As a result, the specific capacitance of NCS-C could reach 1112.4 F/g at a current density of 6 A/g, retaining 692 F/g even at a high current density of 16 A/g. The assembled asymmetric supercapacitor could also deliver a high energy density of 23.4 Wh kg<sup>−1</sup>. This work highlights the significant influence of anion type on the structural and morphological evolution of NCS materials, providing new insights for the development of high-rate NCS-based electrode materials.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"687 ","pages":"Pages 197-206"},"PeriodicalIF":9.4,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402928","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}
引用次数: 0
Influence of positively charged nanoparticles on the stability of oil-in-water emulsions stabilized by a cationic surfactant at extremely low concentration
IF 9.4 1区 化学
Journal of Colloid and Interface Science Pub Date : 2025-02-10 DOI: 10.1016/j.jcis.2025.02.059
Wanqing Zhang , Jianzhong Jiang , Zhenggang Cui , Bernard P. Binks
{"title":"Influence of positively charged nanoparticles on the stability of oil-in-water emulsions stabilized by a cationic surfactant at extremely low concentration","authors":"Wanqing Zhang ,&nbsp;Jianzhong Jiang ,&nbsp;Zhenggang Cui ,&nbsp;Bernard P. Binks","doi":"10.1016/j.jcis.2025.02.059","DOIUrl":"10.1016/j.jcis.2025.02.059","url":null,"abstract":"<div><h3>Hypothesis</h3><div>Charged particles and like-charged ionic surfactant can co-stabilize oil-in-dispersion emulsions at very low concentrations. The surfactant molecules adsorb at the oil–water interface endowing droplets with charge whereas particles remain dispersed in the aqueous phase forming a thick lamella between droplets. The reduced van der Waals attraction between droplets together with the electric double layer repulsion between droplets and between droplets and particles prevents droplets from flocculation and coalescence.</div></div><div><h3>Experiments</h3><div><em>n</em>-Decane-in-water emulsions co-stabilized by positively charged alumina nanoparticles (0.0001–0.06 wt%) and cationic surfactant cetyltrimethyl-ammonium bromide (CTAB, 0.002–0.1 mM) were prepared and characterized. Specifically, the minimum particle concentration required for emulsion stabilization as a function of CTAB concentration was determined, which describes a V shaped boundary separating stable emulsions from unstable ones.</div></div><div><h3>Findings</h3><div>A model based on the Derjaguin-Landau-Verwey-Overbeek (DLVO) theory was proposed to calculate the droplet–droplet and droplet-particle interactions. Along the V shaped boundary particles are attracted by droplets at large distance but may form a monolayer between droplets when they approach at small distance. Both the attraction and repulsion between droplets and particles are proportional to the particle number surrounding unit area of droplet interfaces and the repulsion is always larger than the attraction. This together with the droplet–droplet repulsion ensures emulsion stabilization. Increasing CTAB concentration results in high interfacial potential but also high counterion concentration; to compensate, the particle concentration required for emulsion stabilization is initially reduced and subsequently increased yielding the V shaped boundary.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"687 ","pages":"Pages 449-460"},"PeriodicalIF":9.4,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143429318","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}
引用次数: 0
Photothermal-assisted photocatalytic peroxydisulfate activation based on core–shell CuBi2O4@Cu2WS4 modulated by interfacial bonding and internal electric field
IF 9.4 1区 化学
Journal of Colloid and Interface Science Pub Date : 2025-02-09 DOI: 10.1016/j.jcis.2025.02.054
Xueying Wang , Jun Luo , Qiaozhi Yan , Yu Shen , Zhuo Liu , Shuai Lu , Changyu Lu , Weilong Shi
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