Article
Chemistry, Physical
Siavash Bakhtiarnia, Saeed Sheibani, Alain Billard, Hui Sun, Eric Aubry, Mohammad Arab Pour Yazdi
Summary: This study investigated the effects of thickness on the morphology, crystal structure, composition, optical and photocatalytic properties of nanoporous BiVO4 thin films deposited using reactive DC magnetron sputtering. The results show that film thickness significantly influences the performance of the thin films, impacting porosity, bandgap, crystallographic plane orientation, and photodegradation efficiency under visible light.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Seyedeh Soraya Mousavi, Batool Sajad, Mehrnaz Simdar
Summary: Graphene-based composite thin films were deposited on glass substrates using Pulsed Laser Deposition (PLD) at room temperature. The annealing temperature was found to have a significant effect on the chemical properties and photocatalytic activity of the nanocomposite films. The stoichiometry and optical characteristics of the films could be accurately adjusted through optimized annealing temperature. Confocal Raman spectroscopy confirmed the formation of a composite film with features of both ZnO and GQDs at 300°C. The optimized nanocomposite film showed a high photocatalytic ability with an 84% degradation rate for dye.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Crystallography
Adil Alshoaibi, Chawki Awada, Nisrin Alnaim, Najla Almulhem, Raphael M. Obodo, Malik Maaza, Fabian I. Ezema
Summary: The CBD technique was used to synthesize transition metals/GO nanocomposites for use in supercapacitor electrodes. The nanocomposites showed improved performance and stable phase due to the synergy between the materials. Graphene oxide played a crucial role in enhancing the electrode performance.
Article
Chemistry, Physical
Mehdi Panahi, Mohsen Ghorbani, Mohammad Soleimani Lashkenari
Summary: This study utilized a simple and rapid synthetic method to prepare the CO3O4/GO nanocomposite, and investigated its performance as electrode material in hybrid supercapacitors through surface analyzes and electrochemical tests. The results showed that the hybrid nanocomposite exhibited high specific capacity, energy and power densities, as well as excellent cyclic stability and low impedance compared to other electrodes.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Siavash Bakhtiarnia, Saeed Sheibani, Abbas Nadi, Eric Aubry, Hui Sun, Pascal Briois, Mohammad Arab Pour Yazdi
Summary: Cu-doped BiVO4 nanoporous thin films were synthesized using reactive magnetron sputtering, and the study found that the Cu content had a significant impact on the structure and photocatalytic activity of the films. The film with 2 at.% Cu exhibited the best photocatalytic performance.
APPLIED SURFACE SCIENCE
(2023)
Article
Multidisciplinary Sciences
Prasanth Velvaluri, Arun Soor, Paul Plucinsky, Rodrigo Lima de Miranda, Richard D. James, Eckhard Quandt
Summary: This study presents the design and fabrication of miniaturized origami structures based on thin-film shape memory alloys, which are suitable for medical implants. The designs are based on a group theory approach, allowing for patient-specific treatment of brain aneurysms of differing shapes and sizes. The wafer-based monolithic fabrication method demonstrated here will revolutionize the availability of miniaturized implants, paving the way for new and safer medical treatments.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Physical
Reddivari Muniramaiah, Gouranga Maharana, Jean Maria Fernandes, M. Manivel Raja, Dilli Babu Padmanaban, P. Supraja, M. Rakshita, Nandarapu Purushotham Reddy, M. Kovendhan, Gangalakurti Laxminarayana, R. Rakesh Kumar, D. Haranath, D. Paul Joseph
Summary: The commonly used Indium tin oxide (ITO) electrode is facing challenges due to its low availability, supply issues, and recycling problems. In order to find alternatives, a transparent conducting ultrathin Au/Cu/Ag/Pt/Au noble metallic multi-layer electrode sputtered onto PET substrate was investigated. The multi-layer showed high transmittance and electrical transport properties, as well as good mechanical strength and surface characteristics. It also demonstrated significant performance in piezoelectric nanogenerator and electroluminescent devices.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Physical
Dongwei Ao, Fu Li, Yuexing Chen, Jingting Luo, Guangxing Liang, Zhuanghao Zheng, Xiang-Hua Zhang, Ping Fan
Summary: This study focuses on the optimization of CoSb3-based thin films and electrode structures to fabricate high-performance flexible devices. Multilayer electrode structures can significantly enhance the thermoelectric performance of the devices, increasing output power and thermal stability in air. High output voltage and power density have been achieved through this comprehensive optimization.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Giin-Shan Chen, Jiun-Heng Chen, Jenan Kuo, Huan Niu
Summary: The study found that when using soda-lime glass as the substrate material, during annealing and soaking, the TiO2-WO3 film was affected by sodium, forming highly crystallized mesoporous anatase film with excellent photocatalytic activity.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Aviraj M. Teli, Sonali A. Beknalkar, Vijay C. Karade, Sagar M. Mane, Jiseong Go, Pramod S. Patil, Jae Cheol Shin
Summary: In this study, Mn2O3/GO nanocomposite was prepared using electrospinning method and the influence of GO concentration on its performance was investigated. The results showed that the Mn2O3 sample with 5% GO exhibited high specific capacitance and cyclic stability in 1M aqueous electrolyte. By assembling the coin cell hybrid device, excellent capacitance, energy density, and power density were demonstrated.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Engineering, Chemical
K. ShanmugaElango, C. Senthilkumar
Summary: Electrical discharge machining (EDM) is a commonly used technique for machining difficult-to-machine materials. In this study, electro discharge coating (EDC) was used to alter the surface properties of aluminum alloy. Through experimentation and analysis, the most significant variables were determined, and the successful deposition of elements on the workpiece surface was validated using scanning electron microscopy and energy-dispersive spectroscopy.
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
(2023)
Review
Chemistry, Multidisciplinary
Sandra Lobe, Alexander Bauer, Sven Uhlenbruck, Dina Fattakhova-Rohlfing
Summary: This review discusses the contribution of physical vapor deposition (PVD) processes to the development of electrochemical energy storage systems with emphasis on solid-state batteries. It provides an overview of PVD technologies and highlights the utility of PVD for the fabrication and characterization of individual battery materials. Key methods for the fabrication of solid electrolytes and active electrode materials with well-defined properties are described, demonstrating how these techniques facilitate the understanding of fundamental material properties and interfacial phenomena as well as the development of new materials.
Article
Engineering, Electrical & Electronic
Jung-Jie Huang, Ying-Rong Ho, Yu-Qi Wu
Summary: This study investigated the use of ultrasonic spray coating to prepare PEDOT:PSS-AgNWs/ITO thin films as the counter electrode of WO3-based EC devices. Different film formation mechanisms were observed under various substrate temperatures, and the surface topography of the thin films significantly affected the CE of the EC device. PEDOT:PSS-AgNWs exhibited excellent conductivity and light transmittance, and reduced concentration polarization while increasing the reversibility of intercalation in the WO3 active layer. The analyzed results showed high transmittance modulation and CE for the device.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Yurii Ivanov, Victor Gromov, Sergey Konovalov, Michail Efimov, Yulia Shliarova, Irina Panchenko
Summary: A B + Cr film with a thickness of about 1 μm was deposited on AlCrFeCoNi HEA of non-equiatomic composition prepared by WAAM via plasma-assisted RF sputtering. Subsequent electron beam irradiation treatment resulted in a 2 times increase in microhardness, a 5 times increase in wear resistance, and a 1.3 times decrease in friction coefficient at an energy density of 20 J/cm(2). High-speed crystallization of the surface layer led to the formation of a cellular structure with cell sizes of (150-200) nm. The enhancement in strength and tribological properties can be explained by the decrease in cell size, the formation of chromium and aluminum oxyborides, and the formation of a HEA crystal lattice incorporating solid solution of boron.
Article
Materials Science, Multidisciplinary
Cheng-qun Pan, Qing-dong Zhong, Jian Yang, Y. Frank Cheng, Yu-lin Li
Summary: In this study, the non-uniform corrosion behavior of 6061 Al alloy in a 3.5% sodium chloride solution under a crevice spacing of d = 206 μm was investigated. It was found that as the corrosion time increased, corrosion products such as Al2O3, SiO2, and metal chloride gradually formed on the surface of the alloy, leading to the reversal of the crevice area into an anode area with characteristics of crevice corrosion. This highlights the importance of corrosion products and surface oxides in determining the corrosion behavior inside and outside crevices.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Biotechnology & Applied Microbiology
Irum Shaheen, Khuram Shahzad Ahmad, Camila Zequine, Ram K. Gupta, Andrew G. Thomas, Anjum Qureshi, Mohammad Azad Malik, Javed H. Niazi, Saud Alarifi
Summary: A facile ternary metal oxide nanomaterial (MoO3/NiO/PdO/Pd) was successfully synthesized using a green phyto-organic reducing and stabilizing reagent. The nanocomposite exhibited exceptional capacitive properties due to its smaller band gap and catalytic advantage of phytostabilizing agents, confirming its potential as a supercapacitor electrode.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Shaan Bibi Jaffri, Khuram Shahzad Ahmad, Isaac Abrahams, Sobhy M. Ibrahim
Summary: This study focuses on the synthesis and characterization of lanthanides tri-doped zirconium semiconductor system for energy applications. The material exhibited a wide bandgap energy and a stable crystal structure, making it suitable for solar cells and supercapacitors. The material also showed excellent electrocatalytic activity for oxygen and hydrogen evolution reactions. This research has significant implications for addressing global energy crises.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
Mahwash Mahar Gul, Khuram Shahzad Ahmad, Andrew Guy Thomas, Sobhy M. Ibrahim
Summary: A novel hybrid Barium-Iron sulphide combined with graphene oxide (Ba4Fe2S6-GO) thin film was prepared, showing enhanced electrical and photocatalytic properties. Characterization revealed small band gaps and excellent energy storage capacity of the thin film.
Article
Green & Sustainable Science & Technology
Shaan Bibi Jaffri, Khuram Shahzad Ahmad, Isaac Abrahams, Christina J. Kousseff, Christian B. Nielsen, Sobhy M. Ibrahim
Summary: This study develops and utilizes a novel cerium-praseodymium-neodymium oxide co-doped tin oxide system for various energy applications. The synthesized material exhibits excellent optical, compositional, crystalline, and morphological properties, making it effective for energy-related micro-electrochemical applications. The development of electro-catalyst with this material shows superior energy production and charge storage potential, while the application in cesium-based solar cells demonstrates high efficiency and durability. Ln(3+)(Ce3+-Pr3+-Nd3+):SnO2 is an effective material with a perfect bandgap for diverse energy applications marked by sustainability and economic viability.
ADVANCED SUSTAINABLE SYSTEMS
(2023)
Article
Chemistry, Physical
Sara Majid, Khuram Shahzad Ahmad, A. A. Ibrahim, Muhammad Azad Malik
Summary: The fate of Coumaphos in the environment was evaluated through meticulous emulation and analysis. It was found that Coumaphos has strong adsorption capacity in soils and limited transformation potential. Optimization of degradation routes could facilitate practical strategies for environmental remediation.
INTERNATIONAL JOURNAL OF CHEMICAL KINETICS
(2023)
Article
Materials Science, Multidisciplinary
Mahwash Mahar Gul, Khuram Shahzad Ahmad, Yasser T. Alharbi, Andrew Guy Thomas, Suliman A. Alderhami, Laila Almanqur
Summary: This study focuses on Er2S3:Al2S3:NiS2 thin films prepared using diethyldithiocarbamate. The thin films have a crystallite size of 37 nm and exhibit geometrically shaped, small clustered bodies. XPS analysis confirms the presence of core level peaks corresponding to Er4d, Al2p, Ni2p, and S2p in the material and a band gap energy of 2.7 eV. Electrochemical testing demonstrates excellent performance with a specific capacitance of 879 Fg(-1). The thin films also exhibit satisfactory cycle stability and show promising potential for diverse technological applications such as energy storage and photocatalysis.
JOURNAL OF MATERIALS RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Sundus Azhar, Khuram Shahzad Ahmad, Isaac Abrahams, Wang Lin, Ram K. Gupta, Adel El-marghany
Summary: This research focuses on the environmentally friendly synthesis of CuO-ZrO2 nanocomposites using bioactive compounds of A. viridis. The synthesized material shows promising properties for supercapacitor and water splitting applications, with high specific capacitance and efficient catalytic activity.
JOURNAL OF MATERIALS RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Mahwash Mahar Gul, Khuram Shahzad Ahmad, Andrew Guy Thomas, Sobhy M. Ibrahim
Summary: The most effective way to improve electrochemical efficiency is to design nanostructures that fully utilize the advantages of all metals and create an interface impact between structures. In this study, an elongated with flowery flakes In:SnO2/La3InS6 structure was produced using diethyl dithiocarbamate compound. The substance's morphological, crystalline, and opto-electrical properties were examined. The photoelectrochemical cell's transparent photoactive electrode exhibited an extraordinary specific capacity of 603 F g(-1) at 5 mV s(-1) when illuminated, indicating its potential for renewable energy systems.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Materials Science, Multidisciplinary
Mahwash Mahar Gul, Khuram Shahzad Ahmad, Andrew Guy Thomas, Laila Almanqur, Suliman A. Alderhami, Yasser T. Alharbi
Summary: A composite of erbium, zirconium, and nickel sulphide conjugated with graphene oxide was fabricated as a transparent conductive electrode. The composite showed enhanced photo-current density and specific capacitance under illuminated conditions, making it suitable for integration into renewable energy systems.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Mahwash Mahar Gul, Khuram Shahzad Ahmad, Suliman A. Alderhami, Andrew Guy Thomas, Yasser T. Alharbi, Laila Almanqur
Summary: The successful fabrication of Er2S3:Ni3S4:Co9S8 thinfilm using diethyldithiocarbamate via physical vapor deposition is discussed in this study. Analytical techniques were used to evaluate the structure, morphology, and optical properties of the material. The thin film demonstrated promising properties such as crystallite size of 37.8 nm, bandgap energy of 3.47 eV, satisfactory supercapacitance performance with a specific capacitance of 553.8 Fg 1, cycle stability, and exceptional photocatalytic activity in degrading pesticide fuberidazole.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Energy & Fuels
Shaan Bibi Jaffri, Khuram Shahzad Ahmad, Isaac Abrahams, Sobhy M. Ibrahim
Summary: This study investigates the impact of the lanthanide co-doping strategy on fully inorganic perovskite CsPbI1.8Br1.2. The doped perovskite material shows enhanced opto-electronic, crystalline, and morphological properties, as well as impressive stability. The doping treatment not only improves the performance of CsPbI1.8Br1.2 but also acts as a passivator for surficial defects. The doped material exhibits improved performance in perovskite solar cells and enhanced charge storage potential for battery application.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Multidisciplinary
Shaan Bibi Jaffri, Khuram Shahzad Ahmad, Isaac Abrahams, Mohamed Ouladsmane
Summary: This study presents the design, optimization, and applications of the lanthanide tri-doped CsPbI2.7Br0.3 (CPN:CPVSK). The CPN:CPVSK heterostructure displayed optical activity for 28 days with a narrowed band gap, and showed potential as a photo-converter inside perovskite solar cells. The CPN:CPVSK electrode exhibited moderate affinity towards oxygen production and remarkable hydrogen generation activity. Overall, CPN:CPVSK is a sustainable and energy efficient choice for practical scale energy systems.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Sundus Azhar, Khuram Shahzad Ahmad, Isaac Abrahams, Tenzin Ingsel, Ram K. Gupta, Adel El-marghany
Summary: This study fabricates a CuO:La2O3-based electrode using a sustainable and environmentally friendly method involving phyto-aqueous extract derived from Amaranthus viridis plant leaves. The synthesized nanoparticles exhibit varying morphology and crystalline size, with the lowest optical band gap energy observed for a 7.5% doped concentration. The fabricated electrode shows a specific capacitance value of 879.6 F/g in supercapacitor studies, and demonstrates excellent cyclic stability for over 2000 cycles and up to 20 hours in water splitting studies. Overall, CuO:La2O3 is identified as an efficient energy storage material and a promising catalytic material for water splitting studies.
Article
Engineering, Chemical
Mahwash Mahar Gul, Khuram Shahzad Ahmad, Andrew Guy Thomas, Ammar Mohamed Tighezza
Summary: The research focused on the creation and use of bi-metal sulfide thin film Nd2S3:Ni9S8. The study demonstrated the remarkable supercapacitive capability and high degradation efficiency of the thin film in environmental remediation applications.
ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Taghazal Zahra, Khuram Shahzad Ahmad, Camila Zequine, Ram K. Gupta, Andrew Guy Thomas, Mohammad K. Okla, Ibrahim A. Saleh
Summary: This study focuses on synthesizing ZnO/ZrO2 mixed metal oxide using organic chemicals in an environmentally friendly manner and investigates its phase structure, morphology, surface chemistry, and optical properties. The results show that the synthesized material exhibits remarkable catalytic activity, providing a promising solution for clean energy generation and fuel cell applications.
