Applied Surface Science Advances最新文献_第10页

Antisense oligonucleotide conjugated gold nanoconstructs-based electrochemical biosensor for detection of SARS-CoV-2 基于反义寡核苷酸共轭金纳米结构的电化学生物传感器用于检测 SARS-CoV-2

IF 7.5

Applied Surface Science Advances Pub Date : 2024-06-22 DOI: 10.1016/j.apsadv.2024.100618

Tejaswini P. Patil , Vishakha S. Parkhe , Somnath S. Kundale , Rajanish K. Kamat , Tukaram D. Dongale , Rajendra S Patil , Arpita P. Tiwari

{"title":"Antisense oligonucleotide conjugated gold nanoconstructs-based electrochemical biosensor for detection of SARS-CoV-2","authors":"Tejaswini P. Patil , Vishakha S. Parkhe , Somnath S. Kundale , Rajanish K. Kamat , Tukaram D. Dongale , Rajendra S Patil , Arpita P. Tiwari","doi":"10.1016/j.apsadv.2024.100618","DOIUrl":"https://doi.org/10.1016/j.apsadv.2024.100618","url":null,"abstract":"<div>Nanoconstructs of gold nanoparticles (AuNPs) conjugated with SARS-CoV-2 specific antisense oligonucleotides (ASO) have been utilized to develop sensitive electrochemical nucleic acid biosensor for the detection of SARS-CoV-2 RNA. AuNPs were prepared through a one-pot synthesis method by utilizing Poly-L-Lysine (PLL) biopolymer and as synthesised AuNP were characterized by various analytical techniques such as UV–Vis spectroscopy, X-ray Diffraction (XRD) analysis, Fourier Transform Infra-Red spectroscopy (FT-IR), zeta potential, and Transmission Electron Microscopy (TEM). Poly-L-Lysine functionalized AuNPs (PLL-AuNPs) nanoconstructs platform was employed for immobilization of SARS-CoV-2 specific antisense oligonucleotides (ASO-conjugated PLL-AuNPs) via electrostatic interactions. The PLL-AuNPs were drop casted on glassy carbon electrode (GCE) following immobilization of ASO for fabrication of electrochemical biosensor. The ASO-conjugated PLL-AuNPs nanoconstructs were characterized by cyclic voltammetry (CV), differential pulse voltammetry (DPV), and electrochemical impedance spectroscopy (EIS) techniques. The responsiveness of ASO-conjugated PLL-AuNPs nanoconstructs in presence SARS-CoV-2 RNA was monitored using the DPV, SWV and EIS technique, where methylene blue was employed as an electrochemical indicator for DNA-RNA hybridization detection. The biosensor exhibits a detection range for SARS-CoV-2 RNA infection ranging from 0 to 100 nM, with a limit of detection at 30.2 nM. The electrode, modified with ASO-conjugated PLL-AuNPs, was employed for the detection of SARS-CoV-2 RNA from clinical samples collected from COVID-19-positive individuals.</div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"22 ","pages":"Article 100618"},"PeriodicalIF":7.5,"publicationDate":"2024-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666523924000461/pdfft?md5=227fac56f1013d066bea1266181a6daa&pid=1-s2.0-S2666523924000461-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141444281","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 effect of various treatment parameters in duplex plasma nitrided and diamond-like carbon coating on high-cycle fatigue and fretting fatigue lifetimes of piston pin 16MnCr5 steel 双相等离子氮化和类金刚石碳涂层中各种处理参数对活塞销 16MnCr5 钢高循环疲劳寿命和摩擦疲劳寿命的影响

IF 7.5

Applied Surface Science Advances Pub Date : 2024-06-21 DOI: 10.1016/j.apsadv.2024.100616

Mobin Dizisaz, Mohammad Azadi

{"title":"The effect of various treatment parameters in duplex plasma nitrided and diamond-like carbon coating on high-cycle fatigue and fretting fatigue lifetimes of piston pin 16MnCr5 steel","authors":"Mobin Dizisaz, Mohammad Azadi","doi":"10.1016/j.apsadv.2024.100616","DOIUrl":"https://doi.org/10.1016/j.apsadv.2024.100616","url":null,"abstract":"<div>This paper investigates the impact of duplex plasma nitriding and diamond-like carbon (DLC) coatings on the pure fatigue and fretting fatigue properties of 16MnCr5 steel extracted from industrial piston pins used in combustion engines. Two different nitriding and DLC coating processes were performed: \"DLC-A\" and \"DLC-B\". The Raman spectrometry and microhardness tests were utilized to evaluate the formation of DLC coating on the sample. Subsequently, the pure and fretting fatigue tests (at 350 MPa and under 100 Hz of the frequency) were performed on as-cast and DLC-coated specimens to obtain the effect of coatings on the fatigue behaviors of the 16MnCr5 steel. Finally, the formation of the DLC layer and the fracture mechanisms were also briefly investigated using field-emission scanning electron microscopy. Then, the obtained results demonstrated that DLC coating (\"DLC-B\") increased the fatigue lifetime of 16MnCr5 steel by 47.7 % and 85.3 % in pure and fretting fatigue conditions, respectively. This layer can improve the surface properties of engineering materials and components, which can enhance the fatigue lifetime by increasing microhardness and compressive residual stress, reducing wear and friction, and improving adhesion between the substrate and coating. However, due to the white layer, the “DLC-A” improperly enhanced the material performance.</div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"22 ","pages":"Article 100616"},"PeriodicalIF":7.5,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666523924000448/pdfft?md5=c0688c25a07bf98a8d044650b4ffa6a9&pid=1-s2.0-S2666523924000448-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141438350","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

Ice-phobic honeycomb-like nano SnO2 surfaces: Effect of pretreatment process on sustainable superhydrophobicity 疏冰蜂窝状纳米二氧化锡表面：预处理工艺对可持续超疏水性能的影响

IF 6.2

Applied Surface Science Advances Pub Date : 2024-06-17 DOI: 10.1016/j.apsadv.2024.100617

Elham Aghajanpour Amiri , Reza Norouzbeigi , Elmira Velayi

{"title":"Ice-phobic honeycomb-like nano SnO2 surfaces: Effect of pretreatment process on sustainable superhydrophobicity","authors":"Elham Aghajanpour Amiri , Reza Norouzbeigi , Elmira Velayi","doi":"10.1016/j.apsadv.2024.100617","DOIUrl":"https://doi.org/10.1016/j.apsadv.2024.100617","url":null,"abstract":"<div>Superhydrophobic/Icephobic tin oxide honeycomb-like nanostructures were synthesized on copper surfaces via facile controlled hydrothermal method. Effects of two crucial fabrication parameters including etching treatment variables and presence the seed layer, on the morphology and wettability of the resulted coating were determined. The chemical composition, wettability characteristics, and topographical properties of the samples were characterized by FE-SEM, stylus profilometry, contact angle measurement, and ATR-FTIR analyses. The wettability evaluations confirmed that the tin oxide deposited on the copper oxide (seed layer) exhibited excellent superhydrophobic properties. The prepared hierarchical surfaces showed high water contact angles (CA) as well as 169. <math><mrow><msup><mn>5</mn><mo>∘</mo></msup><mo>±</mo><msup><mn>1</mn><mo>∘</mo></msup></mrow></math> with a contact angle hysteresis (CAH) of 5°± 1°. Moreover, the results confirmed that the etching treatment and the presence of the seed layer can promote the morphology to a uniform state. The ice adhesion strength of the obtained superhydrophobic surfaces reached to 30.4 kPa, showing an excellent ice-phobicity. The mechanical resistance and/or sustainability of the optimized sample was also passed successfully under 10 abrasion test cycles.</div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"22 ","pages":"Article 100617"},"PeriodicalIF":6.2,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266652392400045X/pdfft?md5=590f735fdec880efbe4f9a94557674c4&pid=1-s2.0-S266652392400045X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141423723","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

Nitrogen-functionalized catalyst synthesized using spent coffee ground biochar-cobalt hybrid for oxygen reduction reaction via pyrolysis and ball-milling 通过热解和球磨，利用废咖啡粉生物炭-钴混合物合成氮功能化催化剂，用于氧还原反应

IF 6.2

Applied Surface Science Advances Pub Date : 2024-06-14 DOI: 10.1016/j.apsadv.2024.100614

Mohamad Ayoub , Abdul Hai Alami , Mohammad Ali Abdelkareem , A.G. Olabi

{"title":"Nitrogen-functionalized catalyst synthesized using spent coffee ground biochar-cobalt hybrid for oxygen reduction reaction via pyrolysis and ball-milling","authors":"Mohamad Ayoub , Abdul Hai Alami , Mohammad Ali Abdelkareem , A.G. Olabi","doi":"10.1016/j.apsadv.2024.100614","DOIUrl":"https://doi.org/10.1016/j.apsadv.2024.100614","url":null,"abstract":"<div>In this work, oxygen reduction reaction (ORR) catalysts were developed from a precursor of spent coffee ground-based biochar. Nitrogen doping was achieved via urea addition preceding a pyrolysis synthesis process, yielding nitrogen-doped biochar (NDB). Cobalt was deposited onto the NDB surface using a non-conventional ball-milling procedure. The microstructure of the synthesized samples was studied through Scanning Electron Microscopy (SEM), where a rather distorted surface, highlighted by prominent wrinkles (which doubled the surface area at 50.58 m2/g), was shown for nitrogen-doped samples. Moreover, the high energy ball-milling technique shows an almost perfect coverage of cobalt nanoparticles on the biochar surface through SEM/EDS and Raman results. Additionally, electrochemical testing was conducted using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Cyclic voltammetry measurements conducted under nitrogen (inert) and oxygen-saturated alkaline solution (0.1 M KOH) conditions showed that nitrogen doping enhances the oxygen reduction reaction current (-1 vs -0.59 mA.cm−1 at -0.3 V vs Hg/HgO) and slightly reduces the onset potential compared to pristine biochar. Depositing cobalt onto the NDB surface had a minor adverse effect on the onset potential, but significantly increased the oxygen reduction reaction current, reaching a value of -2.09 mA.cm−2 at -0.3 V vs Hg/HgO. All catalysts were compared to a commercial carbon supported platinum catalyst (Pt10%C) to showcase the potential room of improvement for the developed catalysts.</div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"22 ","pages":"Article 100614"},"PeriodicalIF":6.2,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666523924000424/pdfft?md5=55053a2933f43bf01ae3580eca70ed87&pid=1-s2.0-S2666523924000424-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141322809","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

Utilizing MoO3, MoO3 doped Y2O3 for heavy metals (Hg, Pb, Cu) removal from wastewater monitored by p-XRF and LIBS techniques 通过对 XRF 和 LIBS 技术监测利用氧化钼和掺杂氧化钼的 Y2O3 去除废水中的重金属（汞、铅、铜

IF 6.2

Applied Surface Science Advances Pub Date : 2024-06-07 DOI: 10.1016/j.apsadv.2024.100613

Amal L. Olatibi , Nadiah Y. Aldaleeli , Nafla ELtamimi , Khaled A. Elsayed , Nabil A. Abdel Ghany , Asmaa Elhassan

{"title":"Utilizing MoO3, MoO3 doped Y2O3 for heavy metals (Hg, Pb, Cu) removal from wastewater monitored by p-XRF and LIBS techniques","authors":"Amal L. Olatibi , Nadiah Y. Aldaleeli , Nafla ELtamimi , Khaled A. Elsayed , Nabil A. Abdel Ghany , Asmaa Elhassan","doi":"10.1016/j.apsadv.2024.100613","DOIUrl":"https://doi.org/10.1016/j.apsadv.2024.100613","url":null,"abstract":"<div>In this study the heavy metals (Cu2+, Pb2+, Hg+2) were removed from waste water using two types of sorbents, namely, MoO3 and MoO3 doped with 12 %Y2O3 were synthesized by solgel method. The as-prepared oxides were characterized using X-ray diffraction (XRD), Scanning electron microscope (SEM), Transmission electron microscope (TEM), and X-ray photoelectron spectroscopy (XPS). A combination of quantitative and qualitative analysis techqnieus, portable X-ray fluorescence (pXRF) and laser-induced breakdown spectroscopy (LIBS) were used to evaluate the removing efficency. Calibration curves were performed to elucidate the limit of detection (LOD) of the Laser-Induced Breakdown Spectroscopy (LIBS) technique for the removal process The LOD were 1.65, 2–21 and 0.98 ppm for Cu, Pb and Hg respectively. The results indicated that the Y2O3-doped α-MoO3 has a consistently greater removal efficiency compared to MoO3. The removal effecieny of Hg2+, Pb2+ and Cu2+ was 95 %, 33 % and 21 % respectively with MoO3 while it was 98 % 63 % 35 % for MoO3 doped Y2O3, The results proved also that MoO3 and MoO3 doped Y2O3 nanoparticles can be utilized as cost effective adsorbent material for heavy metal removal in wastewater. The study showed the potential of using Laser-Induced Breakdown Spectroscopy (LIBS) in environmental applications.</div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"22 ","pages":"Article 100613"},"PeriodicalIF":6.2,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666523924000412/pdfft?md5=713c20b59ed2f05845f813779ee36bbf&pid=1-s2.0-S2666523924000412-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141286564","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

ZrN coating as a source for the synthesis of a new hybrid ceramic layer 以 ZrN 涂层为原料合成新型混合陶瓷层

IF 6.2

Applied Surface Science Advances Pub Date : 2024-06-07 DOI: 10.1016/j.apsadv.2024.100615

Roman Gabor , Ladislav Cvrček , Marie Kudrnová , Josef Hlinka , Marek Večeř , Matěj Buřil , Jan Walter , Miha Čekada , Aljaž Drnovšek , Petr Unucka , Kateřina Mamulová Kutláková , Oldřich Motyka , Jana Seidlerová

{"title":"ZrN coating as a source for the synthesis of a new hybrid ceramic layer","authors":"Roman Gabor , Ladislav Cvrček , Marie Kudrnová , Josef Hlinka , Marek Večeř , Matěj Buřil , Jan Walter , Miha Čekada , Aljaž Drnovšek , Petr Unucka , Kateřina Mamulová Kutláková , Oldřich Motyka , Jana Seidlerová","doi":"10.1016/j.apsadv.2024.100615","DOIUrl":"https://doi.org/10.1016/j.apsadv.2024.100615","url":null,"abstract":"<div>The study focuses on an innovative process for the use of a ZrN coating on Ti6Al4V alloy for orthopaedic bone implants. The preparation process combines the technology of physical vapour deposition (PVD) and micro-arc oxidation (MAO) to achieve hydrophobic properties, improved corrosion resistance and enhanced coating adhesion to Ti6Al4V alloy. An alkaline electrolyte and different microarc discharge intensities were used to prepare MAO coatings. The evaluation of the structure and topography of the coatings was performed using SEM with XRPD, EDX, and XPS analysis. The prepared oxide coatings Zr, ZrSiO4, and ZrTiO4 increase the corrosion potential depending on the applied source frequency and thus increase the corrosion resistance of the hybrid system. At the same time, the formation of oxide phases leads to changes in surface topography associated with increasing friction coefficient and better wear resistance.</div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"22 ","pages":"Article 100615"},"PeriodicalIF":6.2,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666523924000436/pdfft?md5=72155b8d1e39fff55cef8d7b300760ac&pid=1-s2.0-S2666523924000436-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141285968","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

Recent advancements in the surface modification and functionalization of magnetic nanomaterials 磁性纳米材料表面改性和功能化的最新进展

IF 6.2

Applied Surface Science Advances Pub Date : 2024-05-17 DOI: 10.1016/j.apsadv.2024.100608

G. Murali Manoj , M. Shalini , K. Thenmozhi , Vinoth Kumar Ponnusamy , Shankar Hari

{"title":"Recent advancements in the surface modification and functionalization of magnetic nanomaterials","authors":"G. Murali Manoj , M. Shalini , K. Thenmozhi , Vinoth Kumar Ponnusamy , Shankar Hari","doi":"10.1016/j.apsadv.2024.100608","DOIUrl":"https://doi.org/10.1016/j.apsadv.2024.100608","url":null,"abstract":"<div>Magnetic nanomaterials (MNMs) with metallic and semiconducting properties are useful in energy conversion, energy storage, environmental, biomedical, agricultural applications thanks to their large surface area, charge carrier mobility, optical band structure, non-toxic nature, and ability to recover and recycle. However, their poor stability, agglomeration, lack of biocompatibility, fast electron-hole recombination, and leaching in acidic environments restrict bare MNMs for real-time applications. There are several approaches employed to overcome these issues, such as elemental doping, defect formation, nanocomposites, and surface functionalization. Among them, functionalization is one of the promising techniques to alter various properties of MNMs such as specific morphology, size, facet, crystalline phase, and electron mobility. Functionalized MNMs have been explored for various areas of research, including biomedical and environmental applications such as MRI, drug delivery, catalysis, solar hydrogen production, sensors, water and air purification. In this short perspective, promising advances in various functionalization strategies such as surface modification, amino functionalization, polymer functionalization, and biomolecule functionalization, techniques were consolidated, reviewed and their various applications are discussed in detail.</div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"21 ","pages":"Article 100608"},"PeriodicalIF":6.2,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666523924000369/pdfft?md5=cd0091d9a0e81be32d86f9b533e2c514&pid=1-s2.0-S2666523924000369-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140952267","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 interface between Pt and Bi2Se3: Instability and formation of a new ordered phase 铂与 Bi2Se3 之间的界面：不稳定性与新有序相的形成

IF 6.2

Applied Surface Science Advances Pub Date : 2024-05-16 DOI: 10.1016/j.apsadv.2024.100610

Mattia Fanetti, Katja Ferfolja, Sandra Gardonio, Matjaž Valant

{"title":"The interface between Pt and Bi2Se3: Instability and formation of a new ordered phase","authors":"Mattia Fanetti, Katja Ferfolja, Sandra Gardonio, Matjaž Valant","doi":"10.1016/j.apsadv.2024.100610","DOIUrl":"https://doi.org/10.1016/j.apsadv.2024.100610","url":null,"abstract":"<div>In this work the interface between a Pt film and a Bi2Se3 (0001) surface is investigated using electron microscopy and microanalysis, in order to characterize the structure of the interface and verify if it is chemically stable or an interaction occurs. At room temperature, the Pt film is composed of small clusters (∼10 nm) and the interface is stable. However, already upon mild annealing (200 °C) the interface displays instability and forms an interfacial phase. The interfacial phase, not previously reported in literature, is a long-range ordered ternary Pt:Bi:Se phase aligned with the Bi2Se3 crystal, most probably an intermetallic compound. The presence of a new phase at Pt/Bi2Se3 interface, together with the possible effects on the topological surface states, has to be considered in all the applied studies where this interface is present, as well as in the models for theoretical studies.</div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"21 ","pages":"Article 100610"},"PeriodicalIF":6.2,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666523924000382/pdfft?md5=0fe609b3fff8e988f2b947afe471ac1d&pid=1-s2.0-S2666523924000382-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140951325","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

A comparative study of lithium salts for the corrosion inhibition of 2024 aluminium alloy 锂盐对 2024 铝合金缓蚀作用的比较研究

IF 6.2

Applied Surface Science Advances Pub Date : 2024-05-11 DOI: 10.1016/j.apsadv.2024.100606

Anh Truc Trinh , Anh Son Nguyen , Thu Thuy Thai , Nicolas Caussé , Nadine Pébère

{"title":"A comparative study of lithium salts for the corrosion inhibition of 2024 aluminium alloy","authors":"Anh Truc Trinh , Anh Son Nguyen , Thu Thuy Thai , Nicolas Caussé , Nadine Pébère","doi":"10.1016/j.apsadv.2024.100606","DOIUrl":"https://doi.org/10.1016/j.apsadv.2024.100606","url":null,"abstract":"<div>In the present work, the corrosion inhibition of AA2024 by lithium salts (nitrate, oxalate and carbonate) is investigated by using both global and local electrochemical techniques. With LiNO3 (0.1 M), the anodic and cathodic current densities are lower and the impedance values higher by comparison with the results obtained in the presence of 0.1 M Li2C2O4 or 0.1 M Li2CO3. After 20 h of immersion in the electrolyte, SEM observations reveal the formation of thick films on the AA2024 surface in the presence of carbonate or oxalate, whereas a thin and denser film is formed in the presence of nitrate. Specifically, the Li2C2O4 addition, by increasing the pH of the electrolyte, induces significant alloy dissolution from the very beginning of immersion which contributes to the growth of a protective layer on the alloy surface, combining lithium, carbonate species and metal cations.A self-healing effect by Li2C2O4 or Li2CO3 is shown by local impedance measurements on artificial scratches made on a water-based epoxy coating deposited on AA2024 plates, confirming their potential use, as inhibitive species, in organic coatings.</div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"21 ","pages":"Article 100606"},"PeriodicalIF":6.2,"publicationDate":"2024-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666523924000345/pdfft?md5=ea9e65b5604167e9a2995e365264f38e&pid=1-s2.0-S2666523924000345-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140906591","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

Iron-based graphene composite for oxygen reduction reaction in alkaline media: Electrocatalytic activity and lifetime evaluation 用于碱性介质中氧还原反应的铁基石墨烯复合材料：电催化活性和寿命评估

IF 6.2

Applied Surface Science Advances Pub Date : 2024-05-10 DOI: 10.1016/j.apsadv.2024.100609

Adriana Vulcu, Teodora Radu, Alexandru Turza, Camelia Berghian-Grosan

{"title":"Iron-based graphene composite for oxygen reduction reaction in alkaline media: Electrocatalytic activity and lifetime evaluation","authors":"Adriana Vulcu, Teodora Radu, Alexandru Turza, Camelia Berghian-Grosan","doi":"10.1016/j.apsadv.2024.100609","DOIUrl":"https://doi.org/10.1016/j.apsadv.2024.100609","url":null,"abstract":"<div>The development of electrocatalysts with high catalytic performance and low costs for oxygen reduction reaction (ORR) is still challenging. Herein, an overall solution for ORR in alkaline media, from the catalyst synthesis to catalyst regeneration and to the development of a rapid, reliable and easy approach for electrode surface evaluation, is presented. We focused on the development and characterization of an efficient material for ORR in alkaline media, α-Fe2O3 N-doped graphene (Fe-N-Gr). The associative pathway for the four electron transfer ORR mechanism is sustained by the Raman spectra recorded from the electrode surface. We highlighted the possibility of catalyst regeneration by a simple electrochemical method. After two regeneration rounds and 1500 cycles in O2-saturated 1 M NaOH, the catalyst still retains 40.8 % catalytic activity. Finally, as a part of the overall solution, we demonstrated that a methodology based on Raman spectroscopic measurements and machine learning algorithms can be applied for graphene-based catalysts lifetime investigation.</div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"21 ","pages":"Article 100609"},"PeriodicalIF":6.2,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666523924000370/pdfft?md5=e8741bb85e46bf7fd37b0a3d58867a2c&pid=1-s2.0-S2666523924000370-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140906592","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