Colloids and Surfaces A: Physicochemical and Engineering Aspects最新文献

{"title":"Experimental and theoretical insights into the corrosion mitigation efficacy of novel quinoline-based pyrazole and isoxazole derivatives","authors":"Anesh Kumar ,&nbsp;Sachin Kumar ,&nbsp;Tarun Kanti Sarkar ,&nbsp;Vandana Saraswat ,&nbsp;Mahendra Yadav ,&nbsp;I.B. Obot ,&nbsp;Aeshah H. Alamri","doi":"10.1016/j.colsurfa.2025.136241","DOIUrl":"10.1016/j.colsurfa.2025.136241","url":null,"abstract":"<div><div>Mild Steel (MS) is widely used in various industrial applications due to its excellent mechanical properties and cost-effectiveness. However, prolonged usage often results in scale formation on MS surfaces, significantly reducing equipment efficiency and leading to production losses and, in some cases, industrial accidents. Acid descaling, commonly using 15 % hydrochloric acid (HCl), is effective for scale removal but can also accelerate corrosion of the underlying metal. Application of corrosion inhibitors is an effective methodology to mitigate the acid induced corrosion. This study investigates the application of two novel Quinoline-based compounds as effective corrosion inhibitors for mild steel in 15 % HCl. The pyrazole derivative namely <strong>2-chloro-6-methoxy-3-(5-(4-methoxyphenyl)-1H-pyrazol-3-yl) quinoline [CMMQ]</strong> had displayed superior efficiency of 99.7 % and the isoxazole derivative namely <strong>3-(2-chloro-6-methoxyquinolin-3-yl)-5-(4-methoxyphenyl)isoxazole [CMMI]</strong> displayed the efficiency of 96.7 %. Both the corrosion inhibitors display strong adsorption capabilities upon the MS surface driven through Langmuir adsorption isotherm model. The observed value for ΔG_ads lies around −41 kJ mol⁻¹ underscoring their potential in high-temperature and low-dosage applications. The electrochemical analysis reveals the mixed type adsorption of the corrosion inhibitors and they effectively protect the cathodic and anodic sites of corrosion. The primary adsorption mechanism is attributed to the aromatic heterocyclic rings, enhancing both inhibitor stability and surface protection. Theoretical results obtained in the study provided further insights into the interaction of the corrosion inhibitor molecules the steel at the atomic level.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"710 ","pages":"Article 136241"},"PeriodicalIF":4.9,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143152172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rheological behavior and mechanism of pH-responsive wormlike micelles based on Sodium cocoyl glycinate / cocamidopropyl hydroxypropyl sulfobetaine","authors":"Wanping Zhang ,&nbsp;Jiajia Gao ,&nbsp;Xin Duan ,&nbsp;Donghu Li ,&nbsp;Hanjun Chen ,&nbsp;Liang Chen ,&nbsp;Qianjie Zhang","doi":"10.1016/j.colsurfa.2025.136244","DOIUrl":"10.1016/j.colsurfa.2025.136244","url":null,"abstract":"<div><div>Wormlike micelles (WLMs) were constructed by anionic surfactant Sodium cocoyl glycinate (SCG) and zwitterionic surfactant cocamidopropyl hydroxypropyl sulfobetaine (CHSB). The rheological behavior of the system was tested and its pH response mechanism was revealed. Results indicated that WLMs formation occurred at mass ratios of 2:8 and 3:7 in 20 wt% SCG/CHSB mixed solutions (pH=7), with rheological behavior consistent with the Maxwell model. It is worth noting that when the mass ratio of WLMs was 3:7, the mesh structure showed the highest degree of entanglement, and the maximum zero-shear viscosity was observed. The influence of pH on the rheological behavior of mixed solution was due to the electrostatic interaction between SCG and CHSB. Specifically, at higher pH, SCG mainly existed in the form of ion (R-COO^-), thereby enhancing the effective area of the surfactant head group, making the packing parameter (P) in the range of 1/2 ∼ 1/3 and promoting the formation of WLMs. However, at pH= 12, excessive negative charge led to the formation of a counter ion layer, resulting in a less closed micelles arrangement and hindered electrostatic attraction between SCG and CHSB.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"710 ","pages":"Article 136244"},"PeriodicalIF":4.9,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143152162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Revealing an efficient and benign electrode fabrication strategy for graphene: A comprehensive investigation on the electrochemical activity of graphene from drop-casting and electrodeposition","authors":"N.S.K. Gowthaman ,&nbsp;Ajay Ajith ,&nbsp;Bharathi Sinduja ,&nbsp;Raju Suresh Kumar","doi":"10.1016/j.colsurfa.2025.136240","DOIUrl":"10.1016/j.colsurfa.2025.136240","url":null,"abstract":"<div><div>The surface chemistry of graphene on solid substrates for various applications has been highly exploited in literature and drop-casting and electrodeposition techniques have been preferred over other fabrication strategies for the effective attachment of exfoliated graphene on electrode surfaces due to simple and less time-consuming. However, always there is a confusion that which part of exfoliated graphene oxide (GO) can be drop-casted either the suspension or supernatant. This work describes a detailed study on the electrochemical performance of drop casted and electrodeposited reduced graphene oxides (rGO). The exfoliated GO as well as the supernatant from the centrifugation of GO were drop casted on glassy carbon electrode (GCE) followed by their electrochemical reduction leads to the fabrication of ErGO and ErGO_s on GCE, respectively. Further, the GO suspension was electrodeposited and reduced simultaneously on GCE to get ED-rGO/GCE. The XRD analysis provides the number of layers of ErGO, ErGO_s and ED-rGO on the electrode surface and were respectively found to be 7, 4 and 3. The electrochemical performance of the modified electrodes was tested against uric acid (UA), dopamine (DA) and nitrobenzene (Nb) as redox probes. The ErGO and ErGO_s/GCEs were only sensitive upto 5 µM addition of the aforementioned analytes due to adsorption-controlled kinetics, whereas the ED-rGO/GCE responded successfully for each 5 and 100 µM addition of UA, DA and Nb due to diffusion-controlled kinetics. Further, the ED-rGO/GCE exhibited excellent storage and cyclic stability toward UA oxidation when compared to other modified electrodes, due to firmly attached layers of rGO. The best-performing electrode, ED-rGO/GCE exhibited the limit of detection of 0.56 nM with a sensitivity of 1653.57 µA mM⁻¹ cm⁻² at the linear range detection of 0.2 µM to 1 mM UA and it exhibited sensitive detection of UA in human blood serum samples, proving its excellent practicability.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"710 ","pages":"Article 136240"},"PeriodicalIF":4.9,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143152218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multifunctional positively charged avermectin nanoemulsion fabricated using a cationic polymer emulsifier bearing dual-enzyme cleavable phenyl ester motifs","authors":"Yuxin Cheng ,&nbsp;Wenxun Guan ,&nbsp;Liming Tang ,&nbsp;Yanbin Huang ,&nbsp;Wantai Yang","doi":"10.1016/j.colsurfa.2025.136234","DOIUrl":"10.1016/j.colsurfa.2025.136234","url":null,"abstract":"<div><div>The development of multifunctional nanopesticides poses considerable challenges, primarily due to issues such as weak adhesion and off-target losses, which typically lead to inefficient utilization. In this study, a novel cationic amphiphilic emulsifier, designated as PEI-PA, was synthesized through an efficient Michael addition reaction between polyethyleneimine and phenyl acrylate, followed by neutralization with acetic acid. Stabilized by PEI-PA, a positively charged avermectin nanoemulsion was fabricated via a phase inversion emulsification process. The resulting optimal avermectin nanoemulsion, referred to as AVM@PEI-PA, exhibited desired properties including small particle size (93.1 ± 2.2 nm), high encapsulation efficiency (82.55 ± 0.56 %), and robust stability against shearing, storage, and UV irradiation. In comparison to the avermectin emulsifiable concentrate, AVM@PEI-PA demonstrated superior spreadability, reduced splash and bounce on hydrophobic cabbage leaves attributed to its lower surface tension, smaller contact angle, and enhanced thixotropy. Notably, the particles of AVM@PEI-PA were effective in bidirectional translocation between cabbage leaves and roots, especially from leaves to roots. More crucially, the stability of the nanoparticles was compromised under various stimuli, such as pH, temperature, esterase, glutathione, and ursolic acid, either individually or in combination, facilitating the release of avermectin molecules. Interestingly, the nanoparticles exhibited obvious esterase/glutathione dual-responsiveness due to the hydrolysis and thiolysis of the phenyl ester in PEI-PA, and this responsiveness could be regulated by the other stimuli (pH, temperature, and ursolic acid). This work highlights the significance of advanced polymer emulsifiers tailored to specific application requirements, presenting a key step forward in the development of intelligent, multifunctional delivery systems for agricultural applications.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"710 ","pages":"Article 136234"},"PeriodicalIF":4.9,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143152168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design, synthesis and therapeutic exploration of nano-curcumin targeting the synergistic interactions with p53 and PARP-1 proteins in preventing food-additive induced genotoxicity and diabetic complications","authors":"Sudatta Dey ,&nbsp;Priyanka Sow ,&nbsp;Rishita Dey ,&nbsp;Pradeepta Guptaroy ,&nbsp;Sisir Nandi ,&nbsp;Asmita Samadder","doi":"10.1016/j.colsurfa.2025.136230","DOIUrl":"10.1016/j.colsurfa.2025.136230","url":null,"abstract":"<div><div>The present study brings forth a novel drug delivery system for targeted therapeutic management of diabetes resulting from food-additive consumption, specifically Alloxan (ALX). ALX exert its toxic effects on pancreatic β cells and L6 cells which has been linked to oxidative stress induced DNA damage that predominantly associates key molecular factors like p53 and PARP-1. To address the issue, nutraceutical curcumin (CUR), was repurposed for its prophylactic property against diabetes by encapsulating it in a biodegradable, non-toxic polymer poly-lactide-co-glycolide (PLGA) to form nano-curcumin (NCUR). The <em>in silico</em> molecular docking study also indicated potential binding affinity of CUR with these critical cellular proteins with optimum dock score. NCUR were characterized through AFM, FESEM, DLS, XRD and FTIR studies, which confirmed its average size as 45 nm, negative zeta potential, smooth surface area and purity in nature. The overall experimental findings in mice model and cell line demonstrated that NCUR significantly delayed diabetes onset by mitigating oxidative stress, genotoxicity, and mitochondrial dysfunction by modulating protein expression by virtue of improve drug solubility and effectivity, targeted delivery, bioavailability, and controlled release of CUR from the nano-capsule i.e. NCUR. Thus, this study suggests a therapeutic possibility of NCUR for addressing diabetes and its complications by targeting/ hyper-activating the function of different proteins and modulating other signalling cascades involved therein for providing a better life of diabetics in near future.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"710 ","pages":"Article 136230"},"PeriodicalIF":4.9,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143152221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unveiling the photodegradation capabilities of MnFe2O4@SiO2-NH2 decorated with ferrocene: A promising spinel catalyst for phthalates removal under visible light condition","authors":"Mohammad Bashiri ,&nbsp;Mona Hosseini-Sarvari","doi":"10.1016/j.colsurfa.2025.136242","DOIUrl":"10.1016/j.colsurfa.2025.136242","url":null,"abstract":"<div><div>Phthalates are widely used in various industries, but concerns have been raised due to the lasting presence in the environment and the possible negative impacts on human health. Photodegradation has appeared as a hopeful approach to mitigate the environmental impact of phthalates. The investigation discusses the photodegradation of three phthalate compounds, dimethyl phthalate (DMP), diethyl phthalate (DEP), and dibutyl phthalate (DBP), using a novel magnetic catalyst MnFe₂O₄@SiO₂-N = Fc. This paper aims to explore the utilization of magnetic ceramics, particularly MnFe₂O₄, as photocatalysts for the degradation of organic pollutants. The essential purpose of the investigation is to examine the positioning of ferrocene on the surface of the magnetic ceramic material for its potential application as a photocatalyst. It will discuss the synthesis methods, characterization techniques, and the photocatalytic mechanisms involved in the degradation process. Furthermore, the challenges and future prospects of using magnetic compounds in photodegradation applications will be addressed. Under visible irradiation, MnFe₂O₄@SiO₂-N = Fc effectively promotes the photodegradation of DMP, DEP, and DBP. Various electromagnetic radiations (blue, white, green, and red) were utilized to test different conditions, and after 240 minutes, it was determined that blue light was the most efficient in removing phthalates. The degradation rate for dimethyl phthalate, diethyl phthalate, and dibutyl phthalate were 0.0049 min⁻¹, 0.0035 min⁻¹ and 0.0046 min⁻¹, respectively, under blue light. Additionally, the effectiveness of acidic and alkaline conditions was assessed, revealing that acidic water exhibited superior performance in phthalate destruction. The evaluation included assessing the significance of both the quantity of phthalates and the quantity of catalyst. When phthalate concentration is low, the photocatalyst demonstrates increased efficiency in photodegradation. Conversely, greater catalyst quantities correspond to enhanced degradation efficiency of phthalates. The process involves the generation of reactive oxygen species (ROS) upon light absorption by the catalyst, which subsequently reacts with the phthalate compounds, leading to their degradation. The photodegradation efficiency of the MnFe₂O₄@SiO₂-N = Fc catalyst is influenced by various factors, including catalyst loading, pH, and irradiation wavelengths.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"710 ","pages":"Article 136242"},"PeriodicalIF":4.9,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143152222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In vitro study of cytotoxicity of cadmium sulfide quantum dots in aqueous solutions","authors":"Svetlana V. Rempel ,&nbsp;Yulia V. Kuznetsova ,&nbsp;Maria V. Ulitko ,&nbsp;Andrey A. Rempel","doi":"10.1016/j.colsurfa.2025.136243","DOIUrl":"10.1016/j.colsurfa.2025.136243","url":null,"abstract":"<div><div>Over the last decades, significant progress in the development of methods for obtaining and applying quantum dots (QDs) in various fields of biology, medicine and technology has been made. As a result, a detailed study of their toxic effect on living organisms and cells is becoming crucial. Physicochemical interaction takes place between the surface of biological component and surface of NPs. This “bio–nano” interaction depends on concentration, size, charge, shape of NPs and cells culture properties. In the present work, early cytopathic changes in fibroblast cells and HeLa cells were studied during conjugation with colloidal solutions of CdS QDs. To meet modern requirements of green chemistry, QDs were obtained by using a simple synthesis method, in an aqueous solution, without the use of high-temperature. To obtain trustworthy results, MTT test, NCR method and vital staining with trypan blue were used. The results of these methods were compared. All precursors of CdS QDs solutions affected the vital activity of cells, but the mechanisms of influence and early pathological changes in cells were different. It was shown that additional removing residues of unreacted precursors from solutions after synthesis reduce cytotoxicity index (IC) from moderate to low. Simultaneous use of several <em>in vitro</em> methods allows one to observe early pathological changes in cells before the onset of cytopathic effect (CPE) and to obtain the most complete information about possible CPE of new functional materials.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"710 ","pages":"Article 136243"},"PeriodicalIF":4.9,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143152166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Insight into the corrosion inhibition performance of triethylenetetramine (TETA) for AZ31 Mg alloy","authors":"Liyan Wang ,&nbsp;Sifan Tu ,&nbsp;Keqi Huang ,&nbsp;Honglei Guo ,&nbsp;Bing Lei ,&nbsp;Zi Yang ,&nbsp;Qiwen Yong ,&nbsp;Zhiyuan Feng ,&nbsp;Xiaotao Liu ,&nbsp;Guozhe Meng","doi":"10.1016/j.colsurfa.2025.136246","DOIUrl":"10.1016/j.colsurfa.2025.136246","url":null,"abstract":"<div><div>As the lightest engineering material, Mg alloys have tremendous application prospects. However, due to their high reactivity, they are highly susceptible to corrosion. Traditional organic corrosion inhibitors have limited effectiveness in protecting Mg alloys, making it difficult to provide excellent protective performance. To address this, our project has discovered an extremely efficient corrosion inhibitor, Triethylenetetramine (TETA), and conducted in-depth research on its protective performance and mechanism. Corrosion electrochemical tests indicated that at a TETA concentration of 47 mM, the inhibition efficiency after 24 hours of immersion in 3.5 wt% NaCl was 98.8 %, and 99.7 % while switched to 0.1 M NaCl. SEM surface morphology analysis showed that the Mg alloy surface remained smooth with no significant corrosion features after adding TETA. XPS surface chemical analysis revealed that the protective TETA layer on the Mg alloy surface was formed due to the adsorption of polar groups. FT-IR technology further confirmed the successful adsorption of TETA. Experimental and theoretical calculations indicate that the corrosion protection mechanism of TETA is due to the spontaneous adsorption of TETA, which forms a dense protective film.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"710 ","pages":"Article 136246"},"PeriodicalIF":4.9,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143152177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"One-step side-by-side electrospraying of Janus particles for durable multifunctional coatings on cotton textiles","authors":"Shu Chen ,&nbsp;Xiongying Wu ,&nbsp;Xuemei Ding","doi":"10.1016/j.colsurfa.2025.136227","DOIUrl":"10.1016/j.colsurfa.2025.136227","url":null,"abstract":"<div><div>The demand for textiles with multifunctional properties—such as antimicrobial activity, UV protection, and hydrophobicity—is rapidly increasing, particularly in medical protective gear and outdoor sportswear. However, securely affixing functional agents, such as nanoparticles, onto fabric substrates remains a challenge, as traditional methods often compromise the fabric’s intrinsic qualities or require complex, time-intensive procedures. Inspired by natural asymmetry observed in bacterial S-layers and octopus suckers, this study introduces a one-step side-by-side electrospraying technique to fabricate Janus particles with bifacial structures. These particles combine polycaprolactone (PCL) loaded with ciprofloxacin (CIP) for sustained antibacterial activity and thermoplastic polyurethane (TPU) embedded with zinc oxide nanoparticles (ZnO NPs) for UV shielding and adhesion. Mimicking this bioinspired asymmetry, the Janus particles achieve optimized environmental interaction on one side and stable adhesion on the other. This innovative approach directly deposits Janus particles onto cotton fabrics, achieving an ultraviolet protection factor (UPF) increase from 11.52 to 78.18, a water contact angle of 136.5°, and a 99 % reduction in bacterial colonies of <em>E. coli</em> and <em>S. aureus</em>. Remarkably, antibacterial efficacy was maintained after 10 washing cycles, demonstrating durability. This bioinspired strategy establishes side-by-side electrospraying as a scalable and efficient method for developing multifunctional textiles with applications in protection and bio-contamination resistance.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"710 ","pages":"Article 136227"},"PeriodicalIF":4.9,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143152178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Polyvinylpyrrolidone influenced reduced graphene oxide modified vanadium pentoxide nano rods for NO2 detection and supercapacitor application","authors":"Bapuso M. Babar ,&nbsp;Umesh D. Babar ,&nbsp;Abhijeet J. Kale ,&nbsp;Tushar T. Bhosale ,&nbsp;Udayraj T. Pawar ,&nbsp;Prakash M. Kadam ,&nbsp;Sandip V. Nipane ,&nbsp;Nishad G. Deshpande ,&nbsp;Pramod S. Patil ,&nbsp;Laxman D. Kadam","doi":"10.1016/j.colsurfa.2025.136239","DOIUrl":"10.1016/j.colsurfa.2025.136239","url":null,"abstract":"<div><div>The need for environmental monitoring and remediation drives massive research efforts to create highly efficient and advanced functional nanomaterials capable of integrating numerous functionalities with easy switching between applications. In present work we focused on hydrothermal synthesis of versatile vanadium pentoxide-reduced graphene oxide composite for both gas sensor and supercapacitor application. An improved surface area and porosity of a layered orthorhombic vanadium pentoxide/reduced graphene oxide (V₂O₅-rGO) nanorods, promotes adsorption of both target gas and electrolyte, which helps during sensing and supercapacitor applications, respectively. Effect of annealing temperature and introduction of rGO has lead into formation of vacancies and V^5 +, V⁴⁺ states. Composite shows around 130 % gas response towards 100 ppm NO₂ gas at relatively low operating temperature of 150⁰ C. Moreover, sample shows fast response and recovery (36/ 605 sec) along with good reproducibility and stability. The electrochemical measurement of composite shows 613.85 F/g specific capacitance at 5 mV/s scan rate. Further sample has good power and energy density and also good stability even after 2000 cycles. Improvement in the performance is primarily revealed due to the impact of rGO as template and more conducting electron route in composite has essentially solved some of the limitations of V₂O₅. Overall study reveals layered V₂O₅-rGO composite is ideal candidate for both sensing and supercapacitor application.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"710 ","pages":"Article 136239"},"PeriodicalIF":4.9,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143152169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}