Article
Chemistry, Physical
Evelyn Artmann, Lukas Forschner, Konstantin M. Schuettler, Mohammad Al-Shakran, Timo Jacob, Albert K. Engstfeld
Summary: Researchers propose a simple method for the preparation of nanoporous gold films, which can be achieved by high voltage electrolysis or anodic contact glow discharge electrolysis. The structural properties of the resulting films can be controlled by adjusting the electrolysis conditions and the reduction reaction conditions.
Article
Chemistry, Physical
Evelyn Artmann, Tobias Schmider, Timo Jacob, Albert K. Engstfeld
Summary: Nanoporous Au (NPG) has unique properties compared to bulk Au and holds promise for various applications. Understanding the structure formation is essential for tailoring NPG films' properties, such as porosity and thickness, for specific applications. In this study, NPG was prepared by electrochemical reduction of Au oxide formed during high voltage electrolysis on poly-oriented Au single crystal (Au POSC) electrodes. The crystallographic orientation of the substrate affected the macroscopic structure of the NPG films, while the formation of Au oxide was mostly independent of crystallographic orientation.
Article
Chemistry, Physical
Bo Wang, Jie Yu, Quanfang Lu, Zhikunliang Xiao, Xiaojuan Ma, Yan Feng
Summary: Manganic manganous oxide (Mn3O4) microspheres were prepared using cathode glow discharge electrolysis (CGDE) plasma technique for high-capacitance supercapacitor electrode materials. The microspheres exhibited excellent specific capacitance and cycling performance, demonstrating their potential as electrode materials for supercapacitors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Spectroscopy
Zdenek Weiss
Summary: The excitation of Ni I and Ni II emission spectra in an argon glow discharge was analyzed, showing enhanced Ni I levels and selective excitation of some Ni II levels attributed to charge transfer reaction.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2022)
Article
Spectroscopy
Zdenek Weiss
Summary: The excitation of Ni I and Ni II emission spectra in an argon glow discharge was analyzed and compared with that of some other transition elements. Higher Ni I levels are enhanced compared to the trend corresponding to the Boltzmann distribution. Selective excitation of some Ni II levels was observed and attributed to the (Ar+-Ni-0) charge transfer reaction.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2022)
Article
Chemistry, Physical
Evelyn Artmann, Pramod V. Menezes, Lukas Forschner, Mohamed M. Elnagar, Ludwig A. Kibler, Timo Jacob, Albert K. Engstfeld
Summary: Pt is found to be stable during electrolysis and CGDE, while Au and Cu exhibit voltage-dependent oxide formation. Keeping the electrodes in the electrolysis solution after electrolysis leads to reduction of oxides, which then form a porous film. These reduced oxides represent a possible new class of materials in energy storage and conversion studies.
Article
Electrochemistry
Jie Yu, Bo Wang, Quanfang Lu, Liangzhikun Xiao, Xiaojuan Ma, Yan Feng, Yuheng Qian
Summary: In this study, Fe3O4 nanoparticles were successfully fabricated by one-step method using cathode glow discharge electrolysis plasma technique. The electrochemical performance of the Fe3O4 nanoparticles as electrode material for supercapacitors was investigated and showed promising results.
ELECTROCHIMICA ACTA
(2022)
Article
Materials Science, Multidisciplinary
Vitaly Tseluikin, Asel Dzhumieva, Denis Tikhonov, Andrey Yakovlev, Anastasia Strilets, Alena Tribis, Marina Lopukhova
Summary: By adding graphene oxide particles into the matrix of nickel electrodeposits, the microhardness and corrosion resistance of nickel-GO composite coatings can be improved.
Article
Chemistry, Applied
Yingjie Zhou, Tianfu Liu, Yuefeng Song, Houfu Lv, Qingxue Liu, Na Ta, Xiaomin Zhang, Guoxiong Wang
Summary: In this study, highly dispersed nickel species were trapped within La0.8Sr0.2FeO3?????-Ce0.8Sm0.2O2????? via a mechanical milling approach, leading to enhanced CO2 electroysis performance in solid oxide electrolysis cell. The alteration of electronic structures and promotion of oxygen vacancy formation greatly improved the CO2 electrolysis performance.
CHINESE JOURNAL OF CATALYSIS
(2022)
Article
Engineering, Environmental
Annamalai Yamuna, Natarajan Karikalan, Tae Yoon Lee
Summary: With the growing demand for food and the challenges posed by climate change, the development of effective pest control agents has become crucial for increasing crop yields. However, the use of pesticides has detrimental effects on human health and the environment. This study presents a novel electrochemical sensor electrode that demonstrates high selectivity and sensitivity for detecting the herbicide Metribuzin, which is commonly used to control weeds. The sensor electrode, consisting of a Ni3TeO6-phase-integrated Ni2Te3O8/expanded graphite (NTO-eGR) composite, exhibits excellent analytical performance and can accurately detect MTBZ even in the presence of interfering species in water and soil samples. The practical applicability of the NTO-eGR electrode is demonstrated by its good reproducibility and high recovery rates in the determination of MTBZ in soil and water samples. Overall, this research highlights the importance of developing efficient and selective detection methods for agricultural chemicals to minimize their impact on both human health and the environment.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Chemical
T. Belmonte, A. V. Nomine, C. Noel, T. Gries, A. Nomine, V. Milichko, M. Belmahi, M. Y. Awaji
Summary: Electrical discharges in liquids have been successful in synthesizing and processing nanoobjects, leading to high expectations in the field. The review focuses on two main classes of processes: solution plasma and glow-discharge electrolysis, discussing the influence of key parameters and presenting applications and anticipated breakthrough achievements.
PLASMA CHEMISTRY AND PLASMA PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Alexey Zaikovskii, Arina Ukhina, Yuliya Mateyshina
Summary: Electric arc sputtering of a composite nickel-carbon electrode leads to the plasma-chemical synthesis of nickel nanoparticles packed in a carbon matrix. The carbon structures effectively prevent the agglomeration and coagulation of nickel nanoparticles. Controlling the calcination temperature can improve the electrical conductivity and specific capacitance of the material, but excessive temperature leads to aggregation and surface area decrease.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2022)
Review
Chemistry, Physical
Lirong Wu, Haitao Yang, Jiaxin Cheng, Chaoquan Hu, Zhiwen Wu, Yuan Feng
Summary: This paper outlines the structure and performance characteristics of nickel-coated graphite composite powder (NCG) and describes several commonly used methods for preparing NCG. The application and development prospects of NCG in various fields are discussed, speculating on its future application potential.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Quan-Fang Lu, Juan-Long Li, Jie Yu, Li-Juan Cui, Bo Wang, Xiao-Juan Ma, Yan Feng
Summary: Tantalum pentoxide nanoparticles were successfully fabricated using cathode glow discharge electrolysis, with CTAB acting as a stabilizing agent to reduce agglomeration. The preparation mechanism involves oxidation of tantalum foil to form a Ta2O5 layer, etching of the Ta2O5 surface to form soluble complexes, and conversion to Ta2O5.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Electrochemistry
Klaus Rottach, Guenter Lang, Matteo Gastaldi, Claudio Gerbaldi, Matteo Bonomo
Summary: This study investigates the impact of small temperature drops on Contact Glow Discharge Electrolysis (CGDE). The addition of frozen KOH solution significantly increases the current, while boiling KOH solution has no effect. Similar results are observed with type III deionized water. These findings highlight the importance of electrolyte temperature control for CGDE systems.
ELECTROCHEMISTRY COMMUNICATIONS
(2023)
Article
Energy & Fuels
Tareq Salameh, Abdul Ghani Olabi, Mohammad Ali Abdelkareem, Mohd Shahbudin Masdar, Siti Kartom Kamarudin, Enas Taha Sayed
Summary: A study was conducted on a green hydrogen system for powering an office building in the Sharjah emirate, United Arab Emirates. A hybrid green hydrogen energy system was compared to a standard hybrid system, and both systems met the power requirements of the office building. The cost of energy was similar for both systems, but the operational and replacement costs were higher for the basic system compared to the green hydrogen system. The green hydrogen system also had a significantly lower carbon footprint compared to the basic system, reducing carbon dioxide emissions by a ratio of 4.6.
Review
Energy & Fuels
Abdul Ghani Olabi, Salah Haridy, Enas Taha Sayed, Muaz Al Radi, Abdul Hai Alami, Firas Zwayyed, Tareq Salameh, Mohammad Ali Abdelkareem
Summary: Heat pipe systems have been gaining attention for various heat transfer-involving systems and processes. Implementing heat pipes in applications is challenging due to their complex operation. Artificial intelligence (AI)-based modeling emerged as a promising alternative for accurate modeling of heat pipe systems. This research reviews the applications of AI techniques for modeling and control of heat pipe systems, discussing the influence of input parameters and prediction models. It concludes that AI algorithms and models can accurately predict and improve the performance of heat pipe systems.
Review
Multidisciplinary Sciences
Mohammadali Kiehbadroudinezhad, Adel Merabet, Chaouki Ghenai, Ahmed G. Abo-Khalil, Tareq Salameh
Summary: With the progress of technology, global power consumption is increasing. The use of fossil fuels in power plants has contributed to a rise in global fossil fuel consumption and environmental degradation, leading to the need for policies and alternatives. Biofuels, as renewable and clean energy sources, have the potential to be a suitable alternative to fossil fuels in various industries, including transportation and power generation.
Article
Electrochemistry
Abdulwadood Al-Ali, Ahmed S. Elwakil, Brent Maundy, Sohaib Majzoub, Anis Allagui
Summary: Electrochemical Impedance Spectroscopy (EIS) is an important diagnostic and monitoring tool in various industries. However, using the conventional frequency-sweep method for EIS in low and ultra low sub-Hz frequencies results in long measurement time. To overcome this issue, a wide-band signal covering the entire frequency range of interest is proposed and validated in this study using the Rudin-Shapiro polynomial. The signal was applied to an RC circuit and compared with the classical frequency-sweep method for verification, and then used for measuring strawberry bio-impedance for age monitoring applications.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Energy & Fuels
Tareq Salameh, Abdul Kadir Hamid, Mena Maurice Farag, Essam M. Abo-Zahhad
Summary: This study investigates the impact of weather conditions on the temperature, electrical efficiency, and power of a PV system in Sharjah, UAE. The findings show that low temperatures and high wind speeds contribute to higher electrical efficiency, while lower ambient temperatures lead to increased power output.
Article
Energy & Fuels
Nouf Khalid Almarzooqi, Fahad Faraz Ahmad, Abdul Kadir Hamid, Chaouki Ghenai, Mena Maurice Farag, Tareq Salameh
Summary: This study examines the impact of optical filters on the performance of photovoltaic panels, showing that by lowering the temperature of the system, the performance of the PV module can be improved.
Article
Energy & Fuels
Oussama Rejeb, Bilal Lamrani, Ravita Lamba, Tarik Kousksou, Tareq Salameh, Abdelmajid Jemni, Abdul Kadir Hamid, Maamar Bettayeb, Chaouki Ghenai
Summary: Thermoelectric modules can convert heat into electric energy, and incorporating them into photovoltaic modules can increase their electrical output. Cooling the modules' cold sides using phase change materials can enhance their electrical performance. The study shows that an increase in solar radiation favors the electrical output of the photovoltaic and thermoelectric modules.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Construction & Building Technology
Tirumala Uday Kumar Nutakki, Waqar Ullah Kazim, Kadhim Alamara, Tareq Salameh, Mohammad Ali Abdelkareem
Summary: Energy-efficient retrofitting of building envelopes is necessary to reduce global carbon emissions and to reach net-zero goals. Cooling energy demand-dominated countries in the GCC region require simple and effective strategies to reduce building sector energy loads. One such approach is using high solar reflective index (SRI) paints to retrofit building roofs and walls.
Article
Electrochemistry
Anis Allagui, Ahmed S. Elwakil
Summary: The capacitance of capacitive energy storage devices cannot be directly measured, but can be estimated from the input and output signals expressed in the time or frequency domains. In this study, Tikhonov's regularization method is used to solve this problem by adding damping to each SVD component, effectively filtering out components corresponding to small singular values and obtaining a stable solution.
ELECTROCHIMICA ACTA
(2023)
Article
Engineering, Electrical & Electronic
Anis Allagui, Di Zhang, Ahmed Elwakil
Summary: This study provides experimental evidence supporting Westerlund's conjecture that Dead Matter Has Memory (Westerlund, 1991). Recent studies have observed and reported memory effects in the dynamic response of electric double-layer capacitors (EDLCs), which integrate their prior history of stimulation and state. Different excitation signals were used to quantify these effects, aiming to charge the same device to the same voltage and accumulated charge level but in different ways. It was observed that different yet repeatable discharge patterns occur, proving the existence of memory. This brief aims to provide further experimental evidence of the inherent memory effect in EDLCs in response to time-varying stationary input excitations with different statistical properties.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2023)
Article
Engineering, Electrical & Electronic
Ahmed S. Elwakil, Anis Allagui, Costas Psychalinos, Brent J. Maundy
Summary: We propose a new class of nonlinear resonance networks modeled by second-order nonlinear differential equations. By modifying traditional RLC resonance networks and introducing a variable resistor controlled by one of the circuit's state-space variables, we achieve an embedded self-feedback control mechanism. An experimental verification of the modified series resonance circuit's filter response behavior is also presented.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2023)
Article
Chemistry, Analytical
Anis Allagui, Mohammed E. Fouda, Ahmed S. Elwakil, Costas Psychalinos
Summary: This study demonstrates a method to accurately estimate the time-domain power and energy of supercapacitors in response to excitation signals, using only the frequency-domain impedance parameters of the device. The results from simulations and experiments show the feasibility and potential of the proposed procedure.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Electrochemistry
Anis Allagui, Osama Awadallah, Bilal El-Zahab, Chunlei Wang
Summary: By examining the frequency-domain response of battery signals, the cyclical performance of batteries can be evaluated. In this study, the short-time Fourier transform is used to deconstruct the charge/discharge signals of lithium-sulfur batteries, allowing the detection of critical changes and potential faults.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Cardiac & Cardiovascular Systems
Hikmat Abdel-Razeq, Baha Sharaf, Mohammed J. J. Al-Jaghbeer, Hala Abu-Fares, Rayan Bater, Moataz Abu Shaer, Hala Abu-Jaish, Dima Abu Laban, Osama Salamah, Faris Tamimi, Khalid Ashouri, Tareq Salameh, Raed Zughul, Yazan Alhalaseh
Summary: Cancer patients, especially those with non-small cell lung cancer (NSCLC), are at an increased risk of developing venous thromboembolism (VTE). Risk assessment models such as the Khorana and COMPASS-CAT can help predict the occurrence of VTE in these patients. Our study aimed to determine the prevalence and predictors of VTE in NSCLC patients and compare the effectiveness of both RAMs in predicting VTE.
JOURNAL OF THROMBOSIS AND THROMBOLYSIS
(2023)
Article
Computer Science, Information Systems
Mary Ann George, Ahmed S. Elwakil, Anis Allagui, Costas Psychalinos
Summary: Complex-order PI/PID controllers are designed to control the speed of an induction motor drive and an electric vehicle, offering greater flexibility, robustness, and improved system performance compared to conventional controllers. The controllers are approximated using the Sanathanan Koener iterative method due to the unavailability of commercial complex-order fractance elements. The approximated transfer function can be easily implemented using the AN231E04 Field Programmable Analog Array, and simulation and experimental results show good agreement with theoretical expectations.