Article
Chemistry, Physical
Dajana Mikic, Helena Otmacic Curkovic, Tadeja Kosec, Neven Peko
Summary: Polluted urban environment accelerates the corrosion of bronze sculptures, leading to a patina mainly composed of copper sulfides and sulphates. The composition and quantity of compounds in the patina vary in different areas, which is reflected in the electrochemical behavior observed.
Article
Materials Science, Multidisciplinary
Angela Kapitanovic, Helena Otmacic Curkovic
Summary: This study examines the corrosion behavior of sulphide patinated bronzes under various aging conditions. The results show that the corrosion resistance of bronze improves over time, with the highest resistance observed under continuous immersion conditions.
Article
Materials Science, Multidisciplinary
R. Gonzalez-Parra, A. Covelo, M. Hernandez
Summary: The study investigated the influence of potentiodynamic scan rate on the formation of artistic patinas on a quaternary copper alloy, revealing the composition and characteristics of patinas formed at different scan rates. The results showed that patinas formed at lower scan rates exhibit better corrosion protection effects.
Article
Green & Sustainable Science & Technology
Rafael Gonzalez-Parra, Alba Covelo, Arturo Barba, Miguel Hernandez
Summary: This study investigates the effect of anodic potential on the corrosion resistance of a copper alloy. It is found that the anodic potential can modify the corrosion product layer and enhance the corrosion resistance of the alloy.
Article
Chemistry, Analytical
Henevith Mendez-Figueroa, Dario Colorado-Garrido, Miguel Hernandez-Perez, Ricardo Galvan-Martinez, Ricardo Orozco Cruz
Summary: This article presents a new methodology that uses statistical tools and artificial neural network (ANN) modeling to predict the non-linear variation of electrochemical impedance in two SiO2-nanostructured patinated quaternary bronzes in a marine atmosphere. The results show that with an appropriate neural network architecture, the electrochemical behavior at low frequencies can be successfully simulated.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Heehong Kwon, Namchul Cho
Summary: Copper alloys form a patina on outdoor bronze sculptures due to interaction with air pollutants. This study conducted corrosion experiments to understand the corrosion behavior of an artificial sulfide patina on a quaternary bronze alloy. The change in color and composition of the patina was correlated with the corrosion process, with brochantite being the dominant corrosion product. These findings provide important insights into the preservation of outdoor bronze sculptures.
Article
Humanities, Multidisciplinary
Marta Kotlar, Nives Matijakovic Mlinaric, Vladan Desnica, Katarina Marusic
Summary: This study discusses the discovery of a bronze kettle dating from the 1st to 2nd century in the riverbed of the Kupa river in Croatia and its subsequent conservation and research. Analysis of the surface layers development of the kettle helps reconstruct its history and the conditions it went through during its life span. The study used various techniques such as optical and scanning electron microscopy, X-ray fluorescence, energy dispersive spectroscopy, and infrared spectroscopy to examine the composition and formation of surface layers on the kettle.
Article
Chemistry, Applied
Tadeja Kosec, Ziva Novak, Erika Svara Fabjan, Luka Skrlep, Matjaz Finsgar
Summary: This study investigates the protective mechanism of a fluoropolymer-based coating on sulphide patinated bronze. The research finds that the coating can effectively protect the surface of bronze from corrosion, and the composition and concentration of the coating play a significant role in its protective effect.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Materials Science, Multidisciplinary
Heehong Kwon
Summary: In this study, artificial patina corrosion experiments were conducted on quaternary bronze to examine the corrosion behavior of chloride patina commonly found in bronze objects in marine environments. The results provide important basic data for research on sculpture conservation and corrosion characteristics.
Article
Chemistry, Inorganic & Nuclear
K. Jrajri, F. Benhiba, M. Oubaaqa, Zaki S. Safi, A. Zaroual, M. El Moudane, I. Warad, D. R. Bazanov, N. A. Lozinskaya, A. Bellaouchou, A. Zarrouk
Summary: This study evaluated the corrosion inhibition effect of a new inhibitor on carbon steel in hydrochloric acid medium. The results showed that increasing inhibitor concentration led to a significant decrease in corrosion level. The inhibitor exhibited both cathodic and anodic inhibition behavior, and its efficiency was influenced by the concentration in the solution.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Engineering, Environmental
Shengli Wang, Shuzhao Pei, Jinna Zhang, Junqiang Huang, Shijie You
Summary: This study reports efficient electrochemical removal of benzotriazole (BTA) using a titanium oxide (TiSO) electroactive ceramic membrane (ECM). The formation of an anti-corrosive BTA film on the TiSO anode was found to enhance the BTA removal. The results of experimental analysis and theoretical calculations identified the degradation pathways and showed a remarkable decrease in toxicity and bioaccumulation factor.
Article
Chemistry, Physical
Dajana Mikic, Helena Otmacic Curkovic
Summary: Bronze cultural heritage in urban areas is susceptible to decay due to pollution. This study examines the corrosion protection of patinated bronze using phosphonic acid and Paraloid B-72 coating. The efficiency of corrosion protection is studied using electrochemical impedance spectroscopy and scanning electron microscopy. The results show that phosphonic acid provides corrosion protection and improves the properties of Paraloid B-72.
Article
Multidisciplinary Sciences
Francesca Boccaccini, Cristina Riccucci, Elena Messina, Marianna Pascucci, Ferdinando Bosi, David Chelazzi, Teresa Guaragnone, Piero Baglioni, Gabriel Maria Ingo, Gabriella Di Carlo
Summary: The reproduction of archaeological corrosion patinas is important for validating conservation materials. In this study, bronze disks were buried for 15 years to reproduce the patinas and test a new cleaning gel. The analysis showed similar corrosion behavior between the reproduced patinas and the archaeological ones, with some differences in local environment and burial time.
Article
Electrochemistry
Angela Kapitanovic, Helena Otmacic Curkovic
Summary: This study investigates the possibility of using acrylic waterborne coatings to protect bronze cultural heritage. The protective properties of the coating are enhanced by pretreating the surface with long-chain phosphonic acid. The corrosion protection of the waterborne coating improves over time in all cases, and the pretreatment with phosphonic acid has the greatest impact on bare bronze substrate.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Rafael Gonzalez-Parra, Guadalupe Banuelos, Alba Covelo-Villar, Miguel A. Hernandez-Gallegos
Summary: This study characterized the kinetic growth and protective properties of the corrosion products layer of a quaternary copper alloy using various techniques. The results revealed that the formation of patinas on the alloy is a mixed process involving dissolution and direct film formation. The characteristics of the corrosion layer were modified by the kinetic formation, resulting in a Warburg-like diffusive mechanism or the response of a porous oxide layer without diffusive phenomena.
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
(2023)
Article
Materials Science, Multidisciplinary
Miha Hren, Tadeja Kosec, Andraz Legat
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
(2020)
Article
Materials Science, Multidisciplinary
Rik-Wouter Bosch, Stefan Ritter, Matthias Herbst, Renate Kilian, M. Grace Burke, Jonathan Duff, Fabio Scenini, Yuchen Gu, Alice Dinu, Ulla Ehrnsten, Aki Toivonen, Radek Novotny, Oliver Martin, Francisco-Javier Perosanz, Andraz Legat, Bojan Zajec
Summary: The study evaluated the applicability of an accelerated test technique using tapered tensile specimens to investigate the stress corrosion crack (SCC) initiation behavior of structural materials in high-temperature water. The advantage of this method is that a stress gradient is obtained through a single test, allowing for the determination of an SCC initiation stress threshold within a reasonable timeframe.
CORROSION ENGINEERING SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Emir Mujanovic, Bojan Zajec, Andraz Legat, Tadeja Kosec, Janez Kovac, Gregor Mori, Stefan Hoenig, Gerald Zehethofer
Summary: Immersion tests were conducted on different stainless steels with pH values stepwise decreased and then increased. It was found that there is a gap between depassivation and repassivation pH values for each steel, indicating that in certain conditions, the passive layer cannot be rebuilt after depassivation. In acidizing jobs in the oil and gas industry, it is crucial to maintain a chromium-rich passive layer for prompt repassivation after acidizing.
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
(2021)
Article
Chemistry, Analytical
Miha Hren, Tadeja Kosec, Mari Lindgren, Elina Huttunen-Saarivirta, Andraz Legat
Summary: An electrical resistance sensor was developed to monitor corrosion in acidic solutions at high temperature using grade 2507 duplex stainless steel as the electrode material, showing significantly lower corrosion rates and promising results for durability and performance under industrial-process conditions.
Article
Engineering, Environmental
Tajda Potrc Obrecht, Sabina Jordan, Andraz Legat, Alexander Passer
Summary: This study evaluates the influence of different electricity mixes and production efficiency on the environmental impact of buildings, particularly in terms of greenhouse gas emissions. It is found that electricity mix plays a significant role in the emissions of building materials. Future research should focus on the dynamic parameters' influence on both the use and end-of-life phases of buildings.
INTERNATIONAL JOURNAL OF LIFE CYCLE ASSESSMENT
(2021)
Article
Dentistry, Oral Surgery & Medicine
Domen Kanduti, Lidija Korat, Tadeja Kosec, Andraz Legat, Maja Ovsenik, Igor Kopac
Summary: This study compared the accuracy of posts fabricated using a conventional direct technique with casting to those fabricated using a fully digital protocol with CAD/CAM technology and selective laser melting. The results showed that both methods were similarly accurate in the cervical part of the prepared root canal, but significant differences in accuracy were observed for the apical parts of the posts.
INTERNATIONAL JOURNAL OF PROSTHODONTICS
(2021)
Article
Chemistry, Physical
Dajana Mikic, Helena Otmacic Curkovic, Tadeja Kosec, Neven Peko
Summary: Polluted urban environment accelerates the corrosion of bronze sculptures, leading to a patina mainly composed of copper sulfides and sulphates. The composition and quantity of compounds in the patina vary in different areas, which is reflected in the electrochemical behavior observed.
Article
Construction & Building Technology
Miha Hren, Violeta Bokan Bosiljkov, Andraz Legat
Summary: The study found that steel in blended cements initially had relatively high corrosion activity, which later decreased due to beneficial changes to the pore structure. Carbonation had a significant impact on corrosion, with carbonated mortars showing shallower damage.
CEMENT AND CONCRETE RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
Tadeja Kosec, Jure Voglar, Petra Mocnik, Andraz Legat
Summary: The study aimed to define the influence of microstructural properties on the electrochemical properties of copper in four different forms, conducting open circuit potential and polarization resistance measurements. Microstructural and electrochemical investigations were combined with electron microscopy and Raman analysis of the corrosion products after immersion of the copper samples in a 0.1 M NaCl solution for 30 days, identifying and analyzing various morphologies of copper corrosion products by Raman spectroscopy.
CORROSION ENGINEERING SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Lidija Curkovic, Helena Otmacic Curkovic, Irena Zmak, Mihone Kerolli Mustafa, Ivana Gabelica
Summary: In this study, a single-layer TiO2-ZrO2 thin film was deposited on stainless steel using the sol-gel process to enhance corrosion resistance. The film was analyzed for morphology and phase composition using SEM and XRD, and its thickness was determined by GD-OES. The corrosion behavior of the coated stainless steel was evaluated in different chloride media, showing significant improvement in corrosion properties with the sol-gel process and calcination at 400 degrees C.
Article
Green & Sustainable Science & Technology
Tajda Potrc Obrecht, Sabina Jordan, Andraz Legat, Marcella Ruschi Mendes Saade, Alexander Passer
Summary: Refurbishment is crucial for reducing environmental impacts in the construction sector, but is often mistakenly treated as the start of a new building life cycle. A new methodology has been proposed to accurately assess environmental impacts and residual values by dividing the life cycle into before and after refurbishment, showing the importance of considering previous environmental flows.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Physical
Nina Gartner, Miha Hren, Tadeja Kosec, Andraz Legat
Summary: This study investigates the corrosion properties of steel in alkali-activated materials by preparing three different mortar mixes and analyzing their responses. Results show varying corrosion responses and damage types caused by different materials.
Article
Electrochemistry
Angela Kapitanovic, Helena Otmacic Curkovic
Summary: This study investigates the possibility of using acrylic waterborne coatings to protect bronze cultural heritage. The protective properties of the coating are enhanced by pretreating the surface with long-chain phosphonic acid. The corrosion protection of the waterborne coating improves over time in all cases, and the pretreatment with phosphonic acid has the greatest impact on bare bronze substrate.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2023)
Article
Chemistry, Physical
Dajana Mikic, Helena Otmacic Curkovic
Summary: Bronze cultural heritage in urban areas is susceptible to decay due to pollution. This study examines the corrosion protection of patinated bronze using phosphonic acid and Paraloid B-72 coating. The efficiency of corrosion protection is studied using electrochemical impedance spectroscopy and scanning electron microscopy. The results show that phosphonic acid provides corrosion protection and improves the properties of Paraloid B-72.
Article
Chemistry, Applied
Angela Kapitanovic, Tea Kokot, Helena Otmacic Curkovic
Summary: The self-assembled monolayers of three long-chain phosphonic acids were studied as potential adhesion promoters and corrosion inhibitors for bronze protection. The results showed that the phosphonic acids could improve the protective properties of a waterborne coating, with different effects depending on the application method. Immersion application of 12-aminododecyl phosphonic acid showed the best corrosion protection, while brush application of 12-phosphonododecylphosphonic acid was the most effective. Measurement of coating adhesion and surface wettability provided valuable information on the effectiveness of the surface pretreatment.
PROGRESS IN ORGANIC COATINGS
(2024)
Article
Electrochemistry
Abdul Qayoom Mugheri, Shaista Khan, Ali Asghar Sangah, Aijaz Ahmed Bhutto, Muhammad Younis Laghari, Nadeem Ahmed Mugheri, Asif Ali Jamali, Arsalan Ahmed Mugheri, Nagji Sodho, Abdul Waheed Mastoi, Aftab Kandhro
Summary: Green hydrogen has the potential to transition to a pollution-free energy infrastructure. This study proposes a solution to produce hydrogen during the photoelectrochemical process, offering greater stability and control over chemical reactions. Techno-economic assessments show the efficiency and economic feasibility of co-producing value-added chemicals to enhance green hydrogen production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Danpeng Cheng, Wuxin Sha, Qigao Han, Shun Tang, Jun Zhong, Jinqiao Du, Jie Tian, Yuan-Cheng Cao
Summary: LiNixCoyMn1-x-yO2 (NCM) is a critical cathode material for lithium-ion batteries in electric vehicles. The aging of cathode/electrolyte interfaces leads to capacity degradation and long-term cycle instability. A novel neural network model called ACGNet is developed to predict electrochemical stability windows of crystals, allowing for high-throughput screening of coating materials. LiPO3 is identified as a promising coating material with high oxidation voltage and low cost, which significantly improves the cycle stability of NCM batteries. This study demonstrates the accuracy and potential of machine learning in battery materials.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
P. Mohana, R. Yuvakkumar, G. Ravi, S. Arunmetha
Summary: This study successfully fabricates a non-noble CuO/NiO/rGO nanocomposite and investigates its electrocatalytic performance for oxygen evolution reaction in alkaline environment. The experimental results demonstrate that the electrocatalyst exhibits high activity and good stability, offering a new synthetic approach for sustainable energy production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Qiong Qu, Jing Guo, Hongyu Wang, Kai Zhang, Jingde Li
Summary: In this study, a bifunctional electrode host design consisting of carbon nanofibers implanted ordered porous Co-decorated Al2O3 supported on carbon nanotube film (CNTF) was proposed to address the shuttling effect of lithium polysulfides (LiPSs) and dendrite formation of metal lithium anode in lithium-sulfur (Li-S) batteries. The electrode exhibited excellent conductivity, efficient confinement of LiPSs, and catalytic conversion performance, resulting in high initial capacity and good capacity retention during cycling. As an anode, the electrode showed excellent Li+ diffusion performance and uniform lithium growth behavior, achieving a dendrite-free lithium electrode. The flexible pack cell assembled from these electrodes delivered a specific capacity of 972 mAh g(-1) with good capacity retention.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Hong Zhang, Jin-Peng Yu, Chen Chen, Cheng-Yong Shu, Guang-Yu Xu, Jie Ren, Kai Cui, Wen-Fang Cai, Yun-Hai Wang, Kun Guo
Summary: Spray coating of acetylene black nanoparticles onto stainless steel mesh can enhance its biofilm formation ability and current density, making it a promising electrode material for microbial electrochemical systems. The spray coating method is simple, cost-effective, and suitable for large-size stainless steel electrodes.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Binpeng Hou, Jingjin Chen, Li-Hong Zhang, Xiaowen Shi, Zizhong Zhu
Summary: The electrochemical performance of Li1.20Mn0.44Ni0.32Co0.04O2 and its oxygen-deficient phase Li1.20Mn0.44Ni0.32Co0.04O1.83 was studied through first-principles calculations. The results show that the oxygen-deficient phase has a higher theoretical capacity but lower voltage platform and higher chemical activity compared to the pristine phase.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Yating Du, Sayoko Shironita, Daisuke Asakura, Eiji Hosono, Yoshitsugu Sone, Yugo Miseki, Eiichi Kobayashi, Minoru Umeda
Summary: This study investigates the effect of high- and low-temperature environments on the charge-discharge performance of a Li-ion battery. The deterioration mechanisms of the battery at different temperatures are analyzed through various characterization techniques. The results indicate that the battery performance deteriorates more significantly at a low-temperature environment of 5 degrees C compared to higher temperatures. The understanding of the deterioration mechanisms can contribute to the development of safer battery usage methods.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Si-Si Shi, Zhi-Xiang Yuan, Fei Zhang, Ping Chen
Summary: In this study, a new nano-electrocatalyst was prepared, which exhibited superior electrocatalytic activity for the reduction of NO2- to ammonia in a neutral electrolyte, potentially due to the synergistic enhancement between Co3O4-x and Co.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Berna Dalkiran, Havva Bekirog
Summary: This study reports the use of deep eutectic solvents (DES) based on ethylene glycol and urea as low-cost and green electrolytes for enhancing electrochemical detection of natural antioxidants. The study successfully developed a disposable and effective electrochemical sensing platform for simultaneous determination of ascorbic acid (AA) and gallic acid (GA) using NaOH nanorods on a pencil graphite electrode. The proposed electrode showed improved analytical performance, with higher peak currents and shifted oxidation potentials in DES compared to BR buffer medium.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Sijun Ren, Jianguo Huang
Summary: In this study, a novel bio-inspired nanofibrous WO3/carbon composite was synthesized using a facile hydrothermal method. The three-dimensional network structure of the composite alleviated the volume expansion of WO3 nanorods and enhanced the charge-transport kinetics. The optimized composite exhibited superior lithium storage properties.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Zhilong Zheng, Yu Chen, Hongxia Yin, Hengbo Xiao, Xiangji Zhou, Zhiwen Li, Ximin Li, Jin Chen, Songliu Yuan, Junjie Guo, Haibin Yu, Zhen Zhang, Lihua Qian
Summary: This study found that interstitial Zn cations in CoMoO4 can modulate the dissolution kinetics of Mo cations and improve the OER performance. The interstitial Zn cations can prevent the dissolution of Co cations at high potential, enhancing the durability of the catalyst.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Xiaobo Lin, Shern R. Tee, Debra J. Searles, Peter T. Cummings
Summary: Molecular dynamics simulations using the constant potential method were used to investigate the charging dynamics and charge storage of supercapacitors. The simulations revealed that the water-in-salt electrolyte exhibited the highest charge storage and significantly higher capacitance on the negative electrode. The varying contributions of different electrode regions to supercapacitor performance were also demonstrated.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Wiktoria Lipinska, Vita Saska, Katarzyna Siuzdak, Jakub Karczewski, Karol Zaleski, Emerson Coy, Anne de Poulpiquet, Ievgen Mazurenko, Elisabeth Lojou
Summary: The spatial distribution of enzymes on electrodes is important for bioelectrocatalysis. In this study, controlled spatial distribution of gold nanoparticles on Ti nanodimples was achieved. The efficiency of enzymatic O2 reduction was found to be influenced by the size of the gold nanoparticles and their colocalization with TiO2. The highest stability of enzymatic current was observed with the largest gold nanoparticles.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Tariq M. Al-Hejri, Zeenat A. Shaikh, Ahmed H. Al-Naggar, Siddheshwar D. Raut, Tabassum Siddiqui, Hamdan M. Danamah, Vijaykumar V. Jadhav, Abdullah M. Al-Enizi, Rajaram S. Mane
Summary: This study explores a promising self-growth approach for the synthesis of nickel hydroxide (Ni(OH)2) nanosponge-balls on the surface of a nickel-foam (NiF) electrode. The modified NiF electrode, named Ni(OH)2@NiF, shows distinctive nanosponge-ball morphology and demonstrates excellent energy storage capability and electrocatalytic performance in both hydrogen and oxygen evolution reactions.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Rafael Del Olmo, Gregorio Guzman-Gonzalez, Oihane Sanz, Maria Forsyth, Nerea Casado
Summary: The use of Lithium-Ion Batteries (LIBs) is becoming increasingly extensive, and it is important to optimize the devices to achieve their maximum practical specific capacity. In this study, mixed ionic-electronic conducting (MIEC) binders based on PEDOT:PSS and PEDOT: PDADMA-TFSI were developed for Li-ion cathodes, and their performance was compared with conventional formulations. The influence of electrode formulations, including the addition of conducting carbon and an Organic Ionic Plastic Cristal (OIPC), was also analyzed. The proposed binders showed improved performance compared to conventional formulations with different electrolyte types and active materials.
ELECTROCHIMICA ACTA
(2024)