Article
Materials Science, Multidisciplinary
Zahra Shahryari, Khalil Gheisari, Mahdi Yeganeh, Bahram Ramezanzadeh
Summary: This study investigated the improvement of corrosion resistance of steel plates in NaCl solution with different ratios of PPyFeCl3 and PPy-APS by adding sodium molybdate. The addition of molybdate significantly decreased the corrosion rate in the PPy-FeCl3 solution.
Article
Polymer Science
Yuzhen Dong, Shizhao Wang, Hyoung Jin Choi
Summary: Dual electric/magnetic field-responsive magnetite coated poly(N-methylaniline)/magnetite (PNMA/Fe3O4) microspheres were successfully synthesized and characterized. The suspension of PNMA/Fe3O4 particles showed dual electrorheological and magnetorheological response, with a power-law relationship between yield stress and electric/magnetic field strength.
Article
Metallurgy & Metallurgical Engineering
Sachin Dua, B. G. Prakashaiah, Nishtha Arora, Rakesh C. Saxena, Sudip K. Ganguly, T. Senthilkumar
Summary: This study investigated the corrosion inhibition effect of a novel functionalized polymer derived from cashew nut shell liquid on steel substrate in a 15% HCl environment. The experimental results demonstrated that the polymer exhibited excellent corrosion mitigation performance and improved the corrosion protection efficiency of the steel substrate.
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2023)
Article
Chemistry, Applied
Emna Rahali, Marta M. Alves, Leila El-Bassi, Latifa Bousselmi, Maria de Fatima Montemor, Hanene Akrout
Summary: This study prepared protective bilayer composite coatings based on polyetherimide (PEI) containing ZnO or CuO particles on mild steel (MS) using the sol-gel dip coating method. The morphology and composition of the coatings were confirmed by scanning electron microscopy (SEM), X-ray diffraction (XRD), and energy dispersive spectroscopy (EDS) analysis. Attenuated total reflectance (ATR) analysis showed that the presence of oxide particles did not affect the polymer structure, while water contact angle tests revealed that PEI-CuO exhibited hydrophobic behavior, while PEI-ZnO and PEI alone showed hydrophilic behavior. Electrochemical impedance spectroscopy (EIS) analysis demonstrated that the PEI-CuO coating had impedance values above 5 x 10(5) Omega.cm(2) after immersion in NaCl for 8 days, representing a protective efficiency greater than 99%.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Instruments & Instrumentation
Yu Zhen Dong, Tae Hyeon Kim, Hyoung Jin Choi
Summary: Monodisperse semiconducting poly(N-methylaniline) microspheres were fabricated using a chemical oxidation process and utilized in an electrorheological suspension, showing chain-like structure formation and solid-like properties under an input electric field. The chemical composition, thermal behavior, and morphology were analyzed, and the viscoelastic characteristics and dielectric behavior of the ER suspension were evaluated.
SMART MATERIALS AND STRUCTURES
(2021)
Article
Materials Science, Multidisciplinary
Amine Kherfi, Ahmed Madani, Djazia Chalal, Sofiane Benidir
Summary: This study reports on the use of SHMP surfactant to disperse ZnO nanoparticles in the PPy polymer matrix for the production of a composite PPy-ZnO coating, which exhibited higher corrosion resistance and better barrier properties compared to pure PPy and PPy-ZnO coatings.
Article
Materials Science, Multidisciplinary
Wenjing Liu, Xin Zhang, Yujie Qiang, Guangming Lu, Xijian Lan, Bin Chen, Haichao Zhao
Summary: The corrosion inhibition efficiency of Ureidopyrimidinone-containing Poly(amino ester) on Q235 steel in HCl medium was studied, revealing that it can form a protective film and suppress the corrosion of oxygen and chlorine, and the efficiency is enhanced with the increase of concentration.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Physical
D. Thirumoolan, K. Anver Basha, S. P. Sakthinathan, T. Siva
Summary: The copolymer of benzoylphenyl methacrylate and methoxyethyl methacrylate was synthesized and its thermal stability and corrosion protection efficiency on mild steel were investigated. The electrochemical results confirmed the good protective effect of the copolymer coating on the metal surface.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Chemistry, Applied
Sila Melahat Yilmaz, Gulten Atun
Summary: Polypyrrole-azo dye composite coatings were electrodeposited on stainless steel 430 using cyclic voltammetry. The coatings showed enhanced corrosion protection in both NaCl and H2SO4 solutions, with controlled release of the inhibitor deposited in the polypyrrole structure.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Chemistry, Applied
Sila Melahat Yilmaz, Gulten Atun
Summary: In this study, polypyrrole-azo dye composite coatings were electrochemically deposited on stainless steel, exhibiting enhanced corrosion resistance in both saltwater and sulfuric acid media. The optimized protective coating, synthesized with 10-5 M dye, showed superior corrosion protection compared to pure polypyrrole, as confirmed by characterization and analysis.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Materials Science, Multidisciplinary
Shuai Ren, Xi Wang, David Young, Maalek Mohamed -Said, Bernardo Santos, Yi He, Marc Singer
Summary: A thick cementite skeleton exposed on a ferritic-pearlitic C1018 steel surface significantly reduced inhibition efficiency after pre-corrosion, while this effect was insignificant for a lower carbon X65 steel with dispersed cementite microstructure, as only a small amount of cementite remained on its surface after pre-corrosion. Normalizing the increased cathodic area in the presence of residual cementite back to the original area inhibited both anodic and cathodic reactions to the same extent as on bare steel with a sufficient inhibitor concentration. However, the detrimental effect of cementite cannot be completely eliminated due to its galvanic coupling effect.
Article
Electrochemistry
Nuran Ozcicek Pekmez, Merve Ugur, Erhan Karaca, Zeliha Ertekin, Kadir Pekmez
Summary: The low-temperature electrosynthesis of titanium suboxide was carried out on mild steel, with a bilayer coating of TinO2n-1 and poly(N-methyl pyrrole) to improve corrosion resistance and achieve a homogeneously dispersed titanium oxide phase with various oxygen contents. The corrosion performances of the coatings were significantly improved by the bilayer structure, providing better protective properties and reducing porosity.
ELECTROCHIMICA ACTA
(2021)
Article
Biochemistry & Molecular Biology
Hanem G. Mohamed, Ahmed A. Aboud, H. M. Abd El-Salam
Summary: A novel hydrogel material was successfully synthesized for the removal of dye pollutants in industrial wastewater with an efficiency of 98%. The adsorption process was physically spontaneous and followed the Freundlich isotherm, proceeding through a pseudo-second order reaction.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Materials Science, Multidisciplinary
Gaber Hashem Gaber Ahmed, G. A. El-Naggar, F. Nasr, E. A. Matter
Summary: Two types of carbon dots, N-doped and N, Si-doped, were synthesized and characterized. The synthesized C-Dots showed good inhibitory effects on the corrosion of mild steel in 1 mol/L HCl. This study suggests that utilizing synthesized C-Dots is a novel, eco-friendly, and effective strategy to prevent corrosion in mild steel.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Chemistry, Applied
Wei Luo, Kai Qi, Yubing Qiu, Xingpeng Guo
Summary: A polypyrrole/zinc (PPy/Zn) bilayer coating is prepared to improve the corrosion resistance of ZK60 magnesium alloy. The zinc coating acts as an intermediate layer for growing the PPy film and shows good abrasion resistance and adhesion strength. The prepared PPy/TA films on the Zn coating are compact and stable in solution, and the PPy film's stability determines the protective performance of the PPy/Zn coating during immersion.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Energy & Fuels
Erhan Karaca, Dincer Gokcen, Nuran Ozcicek Pekmez, Kadir Pekmez
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2020)
Article
Electrochemistry
Zeliha Ertekin, Nuran Ozcicek Pekmez, Kadir Pekmez
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2020)
Article
Energy & Fuels
Erhan Karaca, Dincer Gokcen, Nuran Ozcicek Pekmez, Kadir Pekmez, Merve Ugur, N. Dogancan Aksu
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2020)
Article
Chemistry, Physical
Urte Samukaite-Bubniene, Ausra Valiuniene, Vytautas Bucinskas, Povilas Genys, Vilma Ratautaite, Almira Ramanaviciene, Elif Aksun, Alla Tereshchenko, Bulent Zeybek, Arunas Ramanavicius
Summary: In this study, a pencil graphite electrode was used for the electrochemical synthesis of polypyrrole in aqueous solutions with different pH values. The research found that polypyrrole synthesized at low pH exhibited better longevity. Additionally, it was observed that the degradation of the Ppy layer was faster when stored in a phosphate buffer solution, possibly due to oxygen dissolved in the aqueous medium.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Analytical
Melis Altundal, Ahmet Uge, Ozer Gok, Bulent Zeybek
Summary: A novel electrochemical sensing platform based on differential pulse voltammetry was developed for selective determination of Cd(II) using a CeO2-PANI composite modified electrode. The electrode exhibited a large linear range and a low detection limit for Cd(II), showing good electrocatalytic activity. The platform was successfully applied for reliable determination of spiked Cd(II) in various samples.
ANALYTICAL LETTERS
(2021)
Article
Electrochemistry
Nuran Ozcicek Pekmez, Merve Ugur, Erhan Karaca, Zeliha Ertekin, Kadir Pekmez
Summary: The low-temperature electrosynthesis of titanium suboxide was carried out on mild steel, with a bilayer coating of TinO2n-1 and poly(N-methyl pyrrole) to improve corrosion resistance and achieve a homogeneously dispersed titanium oxide phase with various oxygen contents. The corrosion performances of the coatings were significantly improved by the bilayer structure, providing better protective properties and reducing porosity.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Analytical
Gozde Aydogdu Tig, Bulent Zeybek
Summary: In this study, a modified electrode was prepared by co-electrodeposition of AuNPs and ERGO, followed by coating with P(In-5-COOH) through electropolymerization. The prepared nanocomposite was characterized using FT-IR, FE-SEM and EDX, and XRD techniques, and chronoamperometry was used to detect the electrochemical reduction of H2O2. The results showed that the modified electrode exhibited a wide linear range and low detection limit, and successfully detected H2O2 in fetal bovine serum and urine samples.
Article
Energy & Fuels
Niyazi Ozcelik, Zeliha Ertekin, Nuran Ozcicek Pekmez, Kadir Pekmez
Summary: The electrocatalytic effect of Sb3+, Bi3+, Cu2+, and Sn2+ ions for the V3+/V2+ redox reaction on graphite electrode is investigated, and their binary, ternary, and quaternary ions are studied for the first time. Metal ions are reduced and electrodeposited in situ during the redox reaction, resulting in the homogeneous distribution of metal nanoparticles on the electrode surface. The study suggests potential application in vanadium redox flow batteries.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Erhan Karaca, Gokhan Ozgenc, Nuran Ozcicek Pekmez, Kadir Pekmez
Summary: The simultaneous polymerization of Pyrrole and carbazole monomers in the presence of chemically synthesized MnOx nanoparticles on a stainless steel mesh electrode results in the formation of p(Py-co-Cz)/MnOx composite. This composite exhibits higher capacitance and lower resistance due to its higher porosity and the homogenous encapsulation of MnOx. The electrode prepared from this composite shows good cycling stability and high energy density in a wide voltage range.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Materials Science, Multidisciplinary
Erhan Karaca, Nuran Ozcicek Pekmez, Kadir Pekmez
Summary: The corrosion behavior of aluminum current collectors in different acid solutions was studied, and the use of camphorsulfonic acid (CSA) as an anodization solution was found to enhance the performance of supercapacitors.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Meliha Gozde Cekic, Erhan Karaca, Nuran Ozcicek Pekmez
Summary: The study presents a one-step electrochemical synthesis of PPy/SbOx composite on graphite surface for supercapacitor electrode. The composite exhibits enhanced capacitive performance due to the presence of SbOx nanoparticles. When assembled with activated carbon-based graphite paper electrodes, the asymmetric supercapacitor delivers high energy and power density. However, long-term stability is limited by the structural degradation of PPy in the composite.
Article
Chemistry, Analytical
Kubra Turan, Ahmet Uge, Bulent Zeybek, Gozde Aydogdu Tig
Summary: In this study, a poly(N-methyl aniline)-cerium oxide-functionalized MWCNTs composite was synthesized and used as a modifier for simultaneous detection of uric acid and 5-fluorouracil. The composite exhibited excellent sensing performance with a wide linear working range and low detection limits. The effect of interfering substances on the electrochemical response was investigated, confirming the stability and anti-interference ability of the sensing platform.
ANALYTICAL METHODS
(2023)
Article
Energy & Fuels
Elif Aksun Baykara, Bulent Zeybek
Summary: In this study, a novel hybrid material consisting of cobalt hexacyanoferrate, multi-walled carbon nanotube with carboxyl functionalized, and polypyrrole was prepared as a supercapacitor element on a pencil graphite electrode. The hybrid material exhibited superior supercapacitive performance and long charge-discharge cycle life in an acidic medium. The specific capacitance of the hybrid composite reached 495.0 F g-1 under optimum coating conditions. Moreover, a symmetrical supercapacitor using the optimized electrodes successfully powered red, green, and blue LEDs.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Multidisciplinary
Bulent Zeybek, Ahmet Uge
Summary: Two platforms have been developed for the voltammetric analysis of vitamins B-2 and B-6, with one prepared by the electrochemical reduction of graphene oxide and the other by the deposition of functionalized multi-walled carbon nanotubes. These electrodes showed high electrocatalytic performance for detecting VB2 and VB6, with wide linear ranges, good selectivity, reproducibility, and repeatability.
Article
Dentistry, Oral Surgery & Medicine
Suleyman Hakan Tuna, Erhan Karaca, Ismail Aslan, Gurel Pekkan, Nuran Ozcicek Pekmez
JOURNAL OF ADVANCED PROSTHODONTICS
(2020)
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)
