Results in Surfaces and Interfaces最新文献

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Numerical investigation of PBDB-T:INTIC based bulk heterojunction organic solar cell with graphene derivatives as HTL
Results in Surfaces and Interfaces Pub Date : 2025-03-08 DOI: 10.1016/j.rsurfi.2025.100474
Denet Davis, K.S. Sudheer
{"title":"Numerical investigation of PBDB-T:INTIC based bulk heterojunction organic solar cell with graphene derivatives as HTL","authors":"Denet Davis,&nbsp;K.S. Sudheer","doi":"10.1016/j.rsurfi.2025.100474","DOIUrl":"10.1016/j.rsurfi.2025.100474","url":null,"abstract":"<div><div>Graphene derivatives, with their exceptional mobility and tunable optical bandgap, have emerged as promising candidates as interfacial layers, particularly as hole transport layers (HTLs) in bulk heterojunction organic solar cells (BHJOSCs). Their two-dimensional structure, coupled with outstanding chemical, mechanical, and optoelectronic properties makes them suitable for charge transport in small molecule non-fullerene acceptor (SM-NFA)-based BHJOSCs. INTIC a rarely studied SM-NFA is used for this study due to its superior near-infrared absorption and smaller bandgap compared to other NFAs. In this study, we perform a numerical investigation of BHJOSCs with PBDB-T:INTIC as the active layer with graphene derivatives as transport layers, mainly as hole transport layer utilizing SCAPS-1D software. We first validate the software using a reference device structure of ITO/PEDOT:PSS/PBDB-T:NCBDT/PDINO/Al, as reported experimentally. Next, we replace the non-fullerene acceptor NCBDT with INTIC. Additionally, graphene derivatives are explored as replacements for the conventional PEDOT:PSS HTL, owing to their enhanced role in charge extraction, transport, and their ability to provide protection against environmental degradation and improved durability. Specifically, graphene, p-graphene, graphene oxide (GO), and reduced graphene oxide (rGO) are employed as HTLs. Various electron transport layer (ETL) materials, including TiO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>:gr(20%), TiO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>:gr(10%), PDINO, PFN-Br and IGZO, are also used for the simulation study. The results indicate that the most effective device configuration is ITO/rGO/PBDB-T:INTIC/PDINO/Al, which achieves a Voc of 0.73 V, Jsc of 19.97 mA/cm<span><math><msup><mrow></mrow><mrow><mn>2</mn></mrow></msup></math></span>, FF of 76.95%, and an efficiency of 11.22%.</div></div>","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"19 ","pages":"Article 100474"},"PeriodicalIF":0.0,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimization of process parameters in Nano-particle mixed EDM of hardened die steel AISI H13 using RSM and GA
Results in Surfaces and Interfaces Pub Date : 2025-02-27 DOI: 10.1016/j.rsurfi.2025.100458
Tasfia Saba , AKM Nurul Amin , Sanjida Islam , Maisha Rahman Chaity , Noshin Tasnim Tuli , Adib Bin Rashid
{"title":"Optimization of process parameters in Nano-particle mixed EDM of hardened die steel AISI H13 using RSM and GA","authors":"Tasfia Saba ,&nbsp;AKM Nurul Amin ,&nbsp;Sanjida Islam ,&nbsp;Maisha Rahman Chaity ,&nbsp;Noshin Tasnim Tuli ,&nbsp;Adib Bin Rashid","doi":"10.1016/j.rsurfi.2025.100458","DOIUrl":"10.1016/j.rsurfi.2025.100458","url":null,"abstract":"<div><div>EDM is an unconventional manufacturing technique that utilizes electrical discharges to create complex or robust components from various materials. AISI H13 hot work tool steel is well-suited for applications involving forming and hot working tooling, owing to its exceptional strength, hardness, hardenability, and resistance to thermal softening. The great mix of characteristics makes it challenging to manufacture. This study evaluates the latest EDM techniques applied to machining AISI H13. This study investigates the influence of peak current (10A–30A), pulse ON-time (100μs–250μs), pulse OFF-time (7μs–18μs), and powder concentration (2gm/L-5gm/L) on surface roughness (SR), tool wear rate (TWR), and material removal rate (MRR) for machining AISI H13 material by nano particle mixed EDM. The experimental runs were developed using concepts from Response Surface Methodology within the Design of Experiments (DOE) framework to minimize the number of tests conducted. Central Composite Design (CCD) was employed to develop regression models, resulting in quadratic model for SR, TWR and MRR. ANOVA was used to assess the influence of input factors on outcomes. Optimization was conducted utilizing Response Surface Methodology (RSM) and Genetic Algorithm (GA). The execution of a test run facilitated a comparison between the actual outcomes and the optimized results. In both instances, RSM and GA yielded satisfactory results. A scanning electron microscope was employed to investigate the morphology of machined surfaces. The impact of EDM bombardment on the machined surface and its layers was assessed by examining a cross-section under SEM. This allowed for a comparison of the composition of the recast layer, heat-affected zone, and base metal through visual inspection and EDX analysis. The micro-hardness of the machine surface integrity was evaluated by analysing the heat-affected zone, recast layer, and parent material. The operation of nano particle mixed EDM modifies the composition and micro-hardness of the recast layer and heat-affected zones in comparison to the base metal.</div></div>","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"19 ","pages":"Article 100458"},"PeriodicalIF":0.0,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143592753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mint synthesized r-GO intercalated SnO2 nanocomposites for textile dye degradation
Results in Surfaces and Interfaces Pub Date : 2025-02-25 DOI: 10.1016/j.rsurfi.2025.100466
C. Amudha, M. Santhi
{"title":"Mint synthesized r-GO intercalated SnO2 nanocomposites for textile dye degradation","authors":"C. Amudha,&nbsp;M. Santhi","doi":"10.1016/j.rsurfi.2025.100466","DOIUrl":"10.1016/j.rsurfi.2025.100466","url":null,"abstract":"<div><div>The purpose of this work was to explore the efficacy of tin oxide (SnO<sub>2</sub>) with reduced graphene oxide (r-GO) Nanocomposites (NCs) in terms of their photocatalytic activity. The preparation of pure r-GO sheets and SnO<sub>2</sub>/r-GO NCs was accomplished by the use of the one-pot green method. Several imaging and spectroscopic methods, including as X-ray diffraction (XRD), photoluminescence (PL), UV–Vis spectroscopy, Fourier transform infrared (FTIR), transmission electron microscopy (TEM), and Raman scattering microscopy, were used in order to describe the materials that were synthesized. Following the addition of r-GO, the crystallite size of the SnO<sub>2</sub> nanoparticles increased. Using transmission electron microscopy, it was discovered that the SnO<sub>2</sub> nanoparticles were securely linked to the r-GO sheets. According to the results of the optical experiments, the bandgap energy of the SnO<sub>2</sub>/r-GO NCs was slightly lower when compared to the energy of the pure r-GO sheet. After r-GO doping, the PL spectra of the SnO<sub>2</sub>/r-GO NCs were found to be less intense compared to those of pure r-GO. This indicates that the recombination rate of the surface charges (e<sup>−</sup>/h<sup>+</sup>) reduced. The results of this study indicate that the degrading efficiency of SnO<sub>2</sub>/r-GO NCs was nearly twice as high as that of methyl orange (MO) dye, which was 99%. This is in comparison to the 95% efficiency of pure r-GO. A unique strategy for enhancing the photocatalytic effectiveness of SnO<sub>2</sub> nanoparticles is suggested in this study. This strategy involves fusing graphene derivatives with SnO<sub>2</sub> nanoparticles.</div></div>","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"19 ","pages":"Article 100466"},"PeriodicalIF":0.0,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thiosemicarbazone–based highly selective potentiometric sensor for the determination of copper(II) ions
Results in Surfaces and Interfaces Pub Date : 2025-02-21 DOI: 10.1016/j.rsurfi.2025.100464
Muhammed Elik , Ali Aydin Kogu , Oguz Özbek , Meliha Burcu Gürdere
{"title":"Thiosemicarbazone–based highly selective potentiometric sensor for the determination of copper(II) ions","authors":"Muhammed Elik ,&nbsp;Ali Aydin Kogu ,&nbsp;Oguz Özbek ,&nbsp;Meliha Burcu Gürdere","doi":"10.1016/j.rsurfi.2025.100464","DOIUrl":"10.1016/j.rsurfi.2025.100464","url":null,"abstract":"<div><div>Thiosemicarbazone derivatives are widely used as ionophores in potentiometric ion selective sensors. In this study, a thiosemicarbazone derivative molecule was synthesized and its ionophore properties were investigated. Polymer membrane sensors using the synthesized molecule as ionophore were prepared with different plasticizers. The sensors exhibited very high selectivity towards copper(II) ions over different cationic species. The newly developed copper(II)–selective sensor had a Nernstian response of 27.8±2.9 mV/decade in a wide concentration range of 1.0×10<sup>-1</sup>–1.0×10<sup>-5</sup> M and a low detection limit of 8.23×10<sup>-6</sup> M. The proposed sensor had a fast response time (&lt;5s), a wide pH working range (5.0–10.0) and good reproducibility. The prepared sensor was applied in various water samples and was able to determine copper(II) ions with very high recoveries.</div></div>","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"18 ","pages":"Article 100464"},"PeriodicalIF":0.0,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143479739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preparation of Ta/Nb coatings on the inner surface of 30 mm barrels by high-power impulse magnetron sputtering
Results in Surfaces and Interfaces Pub Date : 2025-01-01 DOI: 10.1016/j.rsurfi.2024.100363
V.M. Kolomiiets, O.I. Shkurat, S.M. Kravchenko, I.M. Kononenko
{"title":"Preparation of Ta/Nb coatings on the inner surface of 30 mm barrels by high-power impulse magnetron sputtering","authors":"V.M. Kolomiiets,&nbsp;O.I. Shkurat,&nbsp;S.M. Kravchenko,&nbsp;I.M. Kononenko","doi":"10.1016/j.rsurfi.2024.100363","DOIUrl":"10.1016/j.rsurfi.2024.100363","url":null,"abstract":"<div><div>For deposition protective coatings of Ta/Nb/Sub (Sub – steel grade 0HN3MFA) on the inner surface of a caliber 30 mm full-size barrel simulator using high power impulse magnetron sputtering (HiPIMS) technology, the optimal design of a magnetron evaporator and its magnetic system was developed, construction documentation was developed, and a test vacuum installation stand was manufactured on this basis.</div><div>Single- and double-layer Nb and Ta films were produced on the manufactured stand with different technological parameters. Studies of their physical and mechanical properties have shown that two-layer Ta/Nb/Sub coatings with a tantalum thickness of 20 μm or more have high wear resistance. Tantalum niobium coatings have Young's modulus values closer to gun steel than galvanic chromium, which increases the resistance of these coatings to cyclic thermal and mechanical stresses and improves the protection of gun steel from the aggressive effects of powder gases. It has been found that the probability of cracking in Ta/Nb/Sub coatings is almost half less than in chromium coatings.</div></div>","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"18 ","pages":"Article 100363"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143168678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Eco-friendly utilization of chitosan from shrimp shells for used lubricating oil cleaning
Results in Surfaces and Interfaces Pub Date : 2025-01-01 DOI: 10.1016/j.rsurfi.2024.100368
Muhammadin Hamid , Indri Dayana , Dewi Sholeha , Muhammad Fadlan Siregar , Indra Roza , Junaidi , Martha Rianna , Hadi Wijoyo
{"title":"Eco-friendly utilization of chitosan from shrimp shells for used lubricating oil cleaning","authors":"Muhammadin Hamid ,&nbsp;Indri Dayana ,&nbsp;Dewi Sholeha ,&nbsp;Muhammad Fadlan Siregar ,&nbsp;Indra Roza ,&nbsp;Junaidi ,&nbsp;Martha Rianna ,&nbsp;Hadi Wijoyo","doi":"10.1016/j.rsurfi.2024.100368","DOIUrl":"10.1016/j.rsurfi.2024.100368","url":null,"abstract":"<div><div>A study on using chitosan as a cleaning agent for used lubricant oil has been successfully conducted. Chitosan, a derivative of chitin derived from abundant crustacean shell waste, has notable properties that make it suitable for applications in various fields, including wastewater treatment, food packaging, wound dressing, biomedical uses, and more. Chitosan is also known to absorb oil, making it an eco-friendly adsorbent for oil spill removal applications. This study aims to explore the extent of chitosan's eco-friendly application in cleaning used lubricant oil, explicitly focusing on removing permanganate content from used oil. Chitosan solution was added to the used oil, and the treated oil was analyzed using FTIR and UV–Vis. The FTIR spectrum, covering a range of 3500–600 cm⁻<sup>1</sup>, indicated the presence of chitosan functional groups in the treated lubricant oil, enhancing its environmental compatibility. Additionally, the UV–Vis testing revealed an energy gap of 5.14 eV. The chitosan mass and pH conditions were found to play significant roles in the treatment process. Seven grams of chitosan in 2 L of used oil optimally reduced permanganate content by approximately 64%–66%. In acidic conditions (pH 3), chitosan further reduced permanganate content by around 67.82%. This research is expected to address environmental issues related to oil waste.</div></div>","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"18 ","pages":"Article 100368"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143169122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High-temperature tribological performance of Ni-based coating on 316L stainless steel
Results in Surfaces and Interfaces Pub Date : 2025-01-01 DOI: 10.1016/j.rsurfi.2024.100388
Sanjay Rukhande , Shubhangi Suryawanshi , Digvijay G. Bhosale , Hitesh Vasudev , Ritu Khimasiya , Rupanjon Das Gupta , Ishaan Deshmukh , Febin Wilson
{"title":"High-temperature tribological performance of Ni-based coating on 316L stainless steel","authors":"Sanjay Rukhande ,&nbsp;Shubhangi Suryawanshi ,&nbsp;Digvijay G. Bhosale ,&nbsp;Hitesh Vasudev ,&nbsp;Ritu Khimasiya ,&nbsp;Rupanjon Das Gupta ,&nbsp;Ishaan Deshmukh ,&nbsp;Febin Wilson","doi":"10.1016/j.rsurfi.2024.100388","DOIUrl":"10.1016/j.rsurfi.2024.100388","url":null,"abstract":"<div><div>In this paper, tribological results are presented for the sliding wear of APS and HVOF sprayed Ni-based coatings (NiCrBSiFeC) at 500 °C. Sliding wear under high-temperature conditions is encountered in various industrial applications such as power generation, nuclear power plants, turbines, hot forming, and aerospace. To mitigate wear and high-temperature oxidation, components are often coated using thermal spraying techniques. Ni-based coating powder was applied to 316L stainless steel under optimized spraying conditions using both APS and HVOF techniques. A dry sliding wear testing setup, consisting of a pin-on-disc tribometer with a heating chamber, was used according to ASTM G99 standards. A high-hardness Silicon-Nitride (Si3N4) ball served as the counter-material. The sliding wear rate and coefficient of friction were analyzed under the specified operating conditions. An improvement of up to 40% in wear resistance was observed with the HVOF-coated specimens compared to those sprayed using APS, indicating significantly lower wear rates with the HVOF technique. The wear tracks on the coatings were examined using scanning electron microscopy (SEM), providing insights into the wear mechanisms.</div></div>","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"18 ","pages":"Article 100388"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143170047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Solid state, rapid mechanochemical route for TiO2 coated Schiff-base polymer as adsorbent for the exclusion of hexavalent Cr from water
Results in Surfaces and Interfaces Pub Date : 2025-01-01 DOI: 10.1016/j.rsurfi.2024.100385
Poornima Gubbi Shivarathri , Shwetha Rajappa , Mohith Smaran Reddy Gondhesi , V.S. Anusuya Devi , Mruthyunjayachari Chattanahalli Devendrachari , Harish Makri Nimbegondi Kotresh
{"title":"Solid state, rapid mechanochemical route for TiO2 coated Schiff-base polymer as adsorbent for the exclusion of hexavalent Cr from water","authors":"Poornima Gubbi Shivarathri ,&nbsp;Shwetha Rajappa ,&nbsp;Mohith Smaran Reddy Gondhesi ,&nbsp;V.S. Anusuya Devi ,&nbsp;Mruthyunjayachari Chattanahalli Devendrachari ,&nbsp;Harish Makri Nimbegondi Kotresh","doi":"10.1016/j.rsurfi.2024.100385","DOIUrl":"10.1016/j.rsurfi.2024.100385","url":null,"abstract":"<div><div>The removal of hexavalent Cr from water is vital considering its harmful and carcinogenic effects on human health as well as the environment. Effective exclusion of Cr(VI) provides reliable water to consume, impedes bioaccumulation, and mitigates environmental pollution.</div><div>The present work details the rapid, ecofriendly, solvent-free mechanochemical route for the development of a polymeric Schiff-Base-wrapped TiO<sub>2</sub> (SBP@TiO<sub>2</sub>) nano-adsorbent for the effective removal of Cr(VI) from water. The comprehensive understanding of the structural and chemical characteristics of the newly synthesized materials were examined through Fourier transform infrared (FTIR) spectroscopy, X-Ray Diffraction (XRD), and Scanning electron microscopy (SEM) with energy dispersive X-ray (EDX) spectroscopy. To assess the adsorption capacity, kinetics, and equilibrium of Cr(VI) adsorbate on adsorbent material (TiO<sub>2</sub> and SBP@TiO<sub>2</sub>) and to understand the interplay between the critical parameters and their impact on adsorption, a series of batch adsorption studies were carried out. The adsorption equilibrium data for the Cr(VI) adsorption process fitted well with the Freundlich isotherm model of adsorption and adsorption kinetics disclosed that the data are in excellent agreement with R<sup>2</sup> values of 0.98721 for the pseudo-second-order, indicating that the sorption process is by chemisorption. Thermodynamic measurements revealed that the adsorption of Cr(VI) on SBP@TiO<sub>2</sub> was spontaneous and endothermic, as corroborated by the −ve value of <span><math><mrow><msup><mrow><mo>Δ</mo><mi>G</mi></mrow><mi>o</mi></msup></mrow></math></span> and the +ve value of <span><math><mrow><msup><mrow><mo>Δ</mo><mi>H</mi></mrow><mi>o</mi></msup></mrow></math></span>, respectively. It was discovered that the sorption of 10 and 50 ppm of Cr(VI) on SBP@TiO<sub>2</sub> was 96% and 75.4% under optimal conditions, respectively. In contrast, the sorption study of Cr(VI) on TiO<sub>2</sub> under identical conditions was found to be 49%. The study found that surface functionalization of TiO<sub>2</sub> by SBP admirably improved the adsorption capacity, signifying SBP@TiO<sub>2</sub> as an efficient Cr(VI) adsorbent.</div></div>","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"18 ","pages":"Article 100385"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143170053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of PCBM impregnation on titanium dioxide films containing Poly(3-alkylthiophene) derivatives
Results in Surfaces and Interfaces Pub Date : 2025-01-01 DOI: 10.1016/j.rsurfi.2024.100392
Mayara Masae Kubota , Paulo Rogério Catarini da Silva , Henrique de Santana
{"title":"Effect of PCBM impregnation on titanium dioxide films containing Poly(3-alkylthiophene) derivatives","authors":"Mayara Masae Kubota ,&nbsp;Paulo Rogério Catarini da Silva ,&nbsp;Henrique de Santana","doi":"10.1016/j.rsurfi.2024.100392","DOIUrl":"10.1016/j.rsurfi.2024.100392","url":null,"abstract":"<div><div>To study how the presence of [6,6]-phenyl-C₆₁-butyric acid methyl ester (PCBM) affects interactions and electronic transfer between poly(3-alkylthiophenes) (P3ATs) and titanium dioxide (TiO<sub>2</sub>), which are priority effects in the active layer of inverted organic solar cells, PCBM was first incorporated into the ITO/TiO<sub>2</sub> system and then the poly(3-methylthiophene) or poly(3-hexylthiophene) films were electrochemically deposited. The interfaces formed were called ITO/TiO<sub>2</sub>/PCBM/P3ATs, subsequently characterized by Raman spectroscopy. The presence of PCBM was found to destabilize the radical cation segments of P3ATs, favoring the dication segments and interfering with the strong interaction observed between P3ATs and TiO<sub>2</sub> studied in a previous work. The possibility of interaction between PCBM and TiO<sub>2</sub> was also studied using the X-ray Diffraction technique, but demonstrated the non-interference of PCBM in the crystalline structure of TiO<sub>2</sub>. These results were supplemented by Confocal Raman images, presenting areas of higher and lower concentrations of PCBM, TiO<sub>2</sub> and P3ATs. However, even with these areas, the spectra demonstrated a certain homogeneity of the segments studied throughout the generated film.</div></div>","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"18 ","pages":"Article 100392"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143170057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The deep investigation of structural and electrochemical analysis on the anti-corrosion behavior of MgCo2O4 and ZnCo2O4 spinel nanoparticles in acid medium
Results in Surfaces and Interfaces Pub Date : 2025-01-01 DOI: 10.1016/j.rsurfi.2025.100416
Shifana Meeran , Akbar Ali Samsath Begum , H. Mohamed Kasim Sheit , M.K. Varusai Mohamed , K.S. Mohan
{"title":"The deep investigation of structural and electrochemical analysis on the anti-corrosion behavior of MgCo2O4 and ZnCo2O4 spinel nanoparticles in acid medium","authors":"Shifana Meeran ,&nbsp;Akbar Ali Samsath Begum ,&nbsp;H. Mohamed Kasim Sheit ,&nbsp;M.K. Varusai Mohamed ,&nbsp;K.S. Mohan","doi":"10.1016/j.rsurfi.2025.100416","DOIUrl":"10.1016/j.rsurfi.2025.100416","url":null,"abstract":"<div><div>In this work, spinel shaped MgCo<sub>2</sub>O<sub>4</sub> and ZnCo<sub>2</sub>O<sub>4</sub> nanoparticles were synthesized by co-precipitation route and applied as protective coatings on the mild steel surface to enhance its corrosion inhibition efficiency in acidic environments. Several analytical techniques including X-ray Diffraction (XRD), UV–Visible spectroscopy, Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), Energy dispersive X-ray Spectroscopy (EDX) and Electrochemical impedance spectroscopy (EIS) were employed to characterize the structural morphological and electrochemical properties of the prepared nanoparticles. The single crystalline phases of MgCo<sub>2</sub>O<sub>4</sub> and ZnCo<sub>2</sub>O<sub>4</sub> were verified by X-ray diffraction (XRD) analysis. SEM analysis reveals the formation of flake-like structures in both materials which indicates their potential to provide enhanced surface coverage. UV–Visible spectroscopy demonstrated distinct absorption peaks for MgCo<sub>2</sub>O₄ at 330 nm and ZnCo<sub>2</sub>O₄ at 318 nm and 458 nm confirming their optical characteristics. The polarization and electrochemical impedance results of the MgCo<sub>2</sub>O<sub>4</sub> and ZnCo<sub>2</sub>O<sub>4</sub> NPs samples show that MgCo<sub>2</sub>O<sub>4</sub> NPs exhibit superior corrosion inhibition activity, with a relative E<sub>corr</sub> value of −472.945 mV and an electrochemical impedance value of 49.22 Ω. This enhanced efficiency is attributed to the robust surface passivation facilitated by the spinel structure. This finding highlight the potential of MgCo<sub>2</sub>O<sub>4</sub> and ZnCo<sub>2</sub>O<sub>4</sub> spinel nanoparticles as innovative, sustainable and efficient corrosion inhibitors for mild steel offering a promising solution for industrial applications aggressive acidic environments.</div></div>","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"18 ","pages":"Article 100416"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143170643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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