Surfaces最新文献_第2页

Etching and Compositional Ratio Effect on the Surface Properties of Bismuth Telluride Thin Films 蚀刻和成分比对碲化铋薄膜表面特性的影响

Surfaces Pub Date : 2024-03-15 DOI: 10.3390/surfaces7010012

Jeongho Mun, Sangmin Han, Hee-Seung Yoon, Jisoo Kang, Oliver Jonas, Juyun Park, Yong-Cheol Kang

{"title":"Etching and Compositional Ratio Effect on the Surface Properties of Bismuth Telluride Thin Films","authors":"Jeongho Mun, Sangmin Han, Hee-Seung Yoon, Jisoo Kang, Oliver Jonas, Juyun Park, Yong-Cheol Kang","doi":"10.3390/surfaces7010012","DOIUrl":"https://doi.org/10.3390/surfaces7010012","url":null,"abstract":"Bismuth telluride has garnered considerable attention owing to its versatile properties applicable in thermoelectric and antibacterial domains, as well as its intriguing topological insulating properties. In this work, our group fabricated bismuth telluride thin films with various ratios using radio frequency magnetron sputtering. The surface properties of these thin films were thoroughly analyzed by employing a diverse array of analytical techniques, including X-ray photoelectron spectroscopy (XPS), ultraviolet photoelectron spectroscopy (UPS), scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray diffraction (XRD), four-point probe and contact angle (CA) measurements. Specifically, our XPS findings indicated that Bi is more susceptible to oxidation than Te following Ar+-ion etching. Pure Te thin films exhibited the highest Rq value of 31.2 nm based on AFM and SEM results due to their larger grain sizes. The XRD patterns revealed a peak at 27.75° for thin films with 20% Te, attributed to its rhombohedral structure. Moreover, thin films with 30% Te yielded the highest weighted average work function with a value of 4.95 eV after etching. Additionally, pristine Bi and Te thin films demonstrated the most robust hydrophobic properties compared to intermediate-composition thin films, as determined by CA measurements.","PeriodicalId":22129,"journal":{"name":"Surfaces","volume":"51 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140238852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparison between Electrooxidation of 1-Naphthol and 2-Naphthol in Different Non-Aqueous Solvents and Suppression of Layer Growth of Polymers 不同非水溶剂中 1-萘酚和 2-萘酚的电氧化作用与抑制聚合物层生长的比较

Surfaces Pub Date : 2024-03-15 DOI: 10.3390/surfaces7010011

L. Kiss, Péter Szabó, S. Kunsági-Máté

{"title":"Comparison between Electrooxidation of 1-Naphthol and 2-Naphthol in Different Non-Aqueous Solvents and Suppression of Layer Growth of Polymers","authors":"L. Kiss, Péter Szabó, S. Kunsági-Máté","doi":"10.3390/surfaces7010011","DOIUrl":"https://doi.org/10.3390/surfaces7010011","url":null,"abstract":"The two naphthol isomers were investigated in different organic solvents by taking cyclic voltammograms, and fouling took place on a platinum electrode surface, except for dimethyl sulfoxide and dimethyl formamide. Studies in allyl alcohol rarely used in electrochemical investigations pointed to the importance of the carbon–carbon double bond as electrode deactivation was remarkably faster compared with its saturated analog solvent. Similarly, the use of the other unsaturated solvent mesityl oxide in the electropolymerization of naphthols resulted in different findings compared with methyl isobutyl ketone. As dimethyl formamide was the best choice concerning the solubility of products, it was successfully tested in electrode renewal after deactivation in an aqueous solution. The increase in dimethyl formamide content led to more and more improved reproducibility of the currents of the outlined aromatic compounds. Naphthol isomers were assessed in the suppression of layer growth originating from the electrooxidation of another monomer phloroglucinol. Its simultaneous electrooxidation with naphthol monomers had a dramatic effect on layer morphology and it was found that instead of a coherent organic layer originating from the homopolymerization of phloroglucinol, the copolymerization with naphthols led to the development of more porous and rougher deposits. The suppressed electropolymerization thus increased sensitivity towards a chosen redox active compound, 4-methoxyphenol.","PeriodicalId":22129,"journal":{"name":"Surfaces","volume":"24 36","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140240200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance and Surface Modification of Cast Iron Corrosion Products by a Green Rust Converter (Mimosa tenuiflora Extract) 绿色锈蚀转化剂（含羞草提取物）对铸铁锈蚀产品的性能和表面改性

Surfaces Pub Date : 2024-03-13 DOI: 10.3390/surfaces7010010

D. E. Arceo-Gómez, J. Reyes-Trujeque, Patricia Balderas-Hernández, A. Carmona-Hernández, Araceli Espinoza-Vázquez, R. Galván-Martínez, R. Orozco-Cruz

{"title":"Performance and Surface Modification of Cast Iron Corrosion Products by a Green Rust Converter (Mimosa tenuiflora Extract)","authors":"D. E. Arceo-Gómez, J. Reyes-Trujeque, Patricia Balderas-Hernández, A. Carmona-Hernández, Araceli Espinoza-Vázquez, R. Galván-Martínez, R. Orozco-Cruz","doi":"10.3390/surfaces7010010","DOIUrl":"https://doi.org/10.3390/surfaces7010010","url":null,"abstract":"One of the alternative materials used for conducting conservation treatment of iron artifacts is the rust converter, since it generates barrier properties and more stable oxides. The protective properties and surface modifications from using Mimosa tenuiflora extract as a green rust converter on a gray iron oxide layer were studied. The surface characterization was carried out using a Scanning Electron Microscope coupled to an energy-dispersive X-ray spectrometer (SEM-EDS), along with infrared spectroscopy (IR), Raman spectroscopy, X-ray Diffraction (XRD), and Water Contact Angle (WCA). Electrochemical characterization was performed with an Electrochemical Impedance Spectroscope (EIS) using 3.5 wt.% NaCl as the electrolyte. According to the results of the Raman spectroscopy and XRD, the layer of corrosion products formed after 90 days in the atmosphere was composed of goethite, lepidocrocite, maghemite, hematite, and magnetite. The surface of the corrosion products was transformed with the rust converter into an amorphous and microcracked layer. By IR, the Fe-O and C-O-Fe bonds associated with the iron chelate were found with absorption bands at 1540 and 1567 cm−1, respectively. By XRD, a modification of the magnetite crystallinity was observed. Finally, the Water Contact Angle and the protective capacity of the corrosion products were improved by the presence of the rust converter.","PeriodicalId":22129,"journal":{"name":"Surfaces","volume":"24 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140247865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effective Surface Structure Changes and Characteristics of Activated Carbon with the Simple Introduction of Oxygen Functional Groups by Using Radiation Energy 利用辐射能简单引入氧官能团后活性炭表面结构的有效变化及其特征

Surfaces Pub Date : 2023-12-22 DOI: 10.3390/surfaces7010002

So Yeong Yang, B. Bai, Yong Ryeol Kim

{"title":"Effective Surface Structure Changes and Characteristics of Activated Carbon with the Simple Introduction of Oxygen Functional Groups by Using Radiation Energy","authors":"So Yeong Yang, B. Bai, Yong Ryeol Kim","doi":"10.3390/surfaces7010002","DOIUrl":"https://doi.org/10.3390/surfaces7010002","url":null,"abstract":"In recent years, research has aimed to enhance the environmental friendliness of activated carbon by modifying its surface properties to effectively capture specific harmful gases. This study’s primary goal is to swiftly introduce oxygen functional groups to activated carbon surfaces using microwave and plasma techniques and evaluate their characteristics. In the microwave method, we varied nitric acid concentrations and treatment durations for surface modification. Additionally, plasma treatment was used to introduce oxygen functional groups for comparative purposes. Surface characteristics were assessed through SEM, BET, XPS, and FT-IR analyses. The results indicate that in the microwave method, the quantity of oxygen functional groups increased with longer reaction times. Specifically, the sample treated for 20 min with 8 moles of nitric acid displayed an oxygen content of 14.11 at%, and higher nitric acid concentrations led to a reduced specific surface area. In the case of plasma treatment, higher oxygen flow rates resulted in an O1s content of 17.1 at%, and an increase in oxygen flow rate introduced more oxygen functional groups but decreased the specific surface area.","PeriodicalId":22129,"journal":{"name":"Surfaces","volume":"70 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139163357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Surface Functionalization of TiO2 Nanotubes Modified with a Thin Film of BiFeO3 用 BiFeO3 薄膜修饰的 TiO2 纳米管的表面功能化

Surfaces Pub Date : 2023-12-19 DOI: 10.3390/surfaces7010001

Shikhgasan Ramazanov, F. Orudzhev, Gaji Gajiev

引用次数: 0

Impact of Surface Science in Current Science and Technology: Some Basic Considerations 表面科学对当前科学技术的影响：一些基本考虑

Surfaces Pub Date : 2023-12-15 DOI: 10.3390/surfaces6040035

Gaetano Granozzi

引用次数: 0

The Corrosion Inhibition Performance of Eco-Friendly bis-Schiff Bases on Carbon Steel in a Hydrochloric Solution 环保型双席夫碱在盐酸溶液中对碳钢的缓蚀性能

Surfaces Pub Date : 2023-12-06 DOI: 10.3390/surfaces6040034

Arthur Valbon, Neubi F. Xavier, Mariana F. L. P. Carlos, G. Bauerfeldt, F. Almeida-Neto, P. de Lima-Neto, Marcelo A. Neves, C. E. Rodrigues-Santos, Aurea Echevarria

{"title":"The Corrosion Inhibition Performance of Eco-Friendly bis-Schiff Bases on Carbon Steel in a Hydrochloric Solution","authors":"Arthur Valbon, Neubi F. Xavier, Mariana F. L. P. Carlos, G. Bauerfeldt, F. Almeida-Neto, P. de Lima-Neto, Marcelo A. Neves, C. E. Rodrigues-Santos, Aurea Echevarria","doi":"10.3390/surfaces6040034","DOIUrl":"https://doi.org/10.3390/surfaces6040034","url":null,"abstract":"Corrosion inhibitors are widely used as an important tool for the prevention and remediation of different materials exposed to corrosive industrial processes. Corrosion inhibitors are usually added to acid pickling solutions to reduce the deterioration of metallic materials and particularly, corrosion due to hydrochloric acid. In this work, three bis-Schiff bases (BS2, BS4 and BS8) were synthesized and characterized using spectroscopic methods, and their anti-corrosive effects on AISI 1020 carbon steel in a hydrochloric acid solution were studied using gravimetric and electrochemical techniques and quantum chemical methods. The results showed that all substances act as potential corrosion inhibitors as BS8 exhibited the highest efficiency (98%) of all methods. The compounds adsorbed on the metal surface were as per the El-Awady adsorption isotherm. Morphological aspects of the metal were observed upon applying SEM, and the theoretical results acquired from the quantum chemical calculation for molecular properties and the Fe(110) surface adsorption proved to be compatible with the experimental results.","PeriodicalId":22129,"journal":{"name":"Surfaces","volume":"3 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138596789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Highly Efficient Cobalt Sulfide Heterostructures Fabricated on Nickel Foam Electrodes for Oxygen Evolution Reaction in Alkaline Water Electrolysis Cells 在镍泡沫电极上制备高效硫化钴异质结构，用于碱性水电解槽中的氧气进化反应

Surfaces Pub Date : 2023-11-23 DOI: 10.3390/surfaces6040033

I. Poimenidis, N. Papakosta, P. Loukakos, G. Marnellos, M. Konsolakis

{"title":"Highly Efficient Cobalt Sulfide Heterostructures Fabricated on Nickel Foam Electrodes for Oxygen Evolution Reaction in Alkaline Water Electrolysis Cells","authors":"I. Poimenidis, N. Papakosta, P. Loukakos, G. Marnellos, M. Konsolakis","doi":"10.3390/surfaces6040033","DOIUrl":"https://doi.org/10.3390/surfaces6040033","url":null,"abstract":"Non-noble metal electrocatalysts for the oxygen evolution reaction (OER) have recently gained particular attention. In the present work, a facile one-step electrodeposition method is applied in situ to synthesize cobalt sulfide nanostructures on nickel foam (NF) electrodes. For the first time, a systematic study is carried out on the impact of the Co/S molar ratio on the structural, morphological, and electrochemical characteristics of Ni-based OER electrodes by employing Co(NO3)2·6 H2O and CH4N2S as Co and S precursors, respectively. The optimum performance was obtained for an equimolar Co:S ratio (1:1), whereas sulfur-rich or Co-rich electrodes resulted in an inferior behavior. In particular, the CoxSy@NF electrode with Co/S (1:1) exhibited the lowest overpotential value at 10 mA cm−2 (0.28 V) and a Tafel slope of 95 mV dec−1, offering, in addition, a high double-layer capacitance (CDL) of 10.7 mF cm−2. Electrochemical impedance spectroscopy (EIS) measurements confirmed the crucial effect of the Co/S ratio on the charge-transfer reaction rate, which is maximized for a Co:S molar ratio of 1:1. Moreover, field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD) and X-ray fluorescence (XRF) were conducted to gain insights into the impact of the Co/S ratio on the structural and morphological characteristics of the electrodes. Notably, the CoxSy@NF electrocatalyst with an equimolar Co:S ratio presented a 3D flower-like nanosheet morphology, offering an increased electrochemically active surface area (ESCA) and improved OER kinetics.","PeriodicalId":22129,"journal":{"name":"Surfaces","volume":"36 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139242852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Selective Chemical Filters for VOF3: Tailoring MgF2 Filter Selectivity through Surface Chemistry 用于 VOF3 的选择性化学过滤器：通过表面化学调整 MgF2 过滤器的选择性

Surfaces Pub Date : 2023-11-19 DOI: 10.3390/surfaces6040032

Laurent Jouffret, Jean-Michel Hiltbrunner, Elodie Petit, Ania Selmi, Bertrand Morel, Marc Dubois

引用次数: 0

Understanding the Effects of Post-Deposition Sequential Annealing on the Physical and Chemical Properties of Cu2ZnSnSe4 Thin Films 了解沉积后顺序退火对 Cu2ZnSnSe4 薄膜物理和化学性质的影响

Surfaces Pub Date : 2023-11-19 DOI: 10.3390/surfaces6040031

D. Catana, M. Zaki, I. Simandan, A. Buruiana, Florinel Sava, A. Velea

引用次数: 0