Article
Electrochemistry
Santiago Bermudez, Lina Castaneda, Luis Salazar, Carlos Sanchez-Saenz, Dora Carmona
Summary: Semiconductor materials, such as ZnO and TiO2-based nanomaterials, are widely used in solar energy applications. Determining the electronic band structure of these materials is crucial for assessing their thermodynamic feasibility in specific applications. This article compares different methods (Mott-Schottky, photocurrent onset potential, and open-circuit potential) for determining the flat band potential, and discusses the difficulties that may arise during experimentation and the variations in reported values between different methods.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Nanoscience & Nanotechnology
Jimin Han, Kitae Park, Hyun-Mi Kim, Tae-Sik Yoon
Summary: The tunable multilevel gate oxide capacitance and flat-band voltage shift characteristics in double-floating-gate metal-oxide-semiconductor (DFG-MOS) capacitors were investigated for non-volatile memory and programmable logic device applications. The proposed devices operate with tunable multilevel gate oxide capacitance and flat-band voltage shift associated with filament formation inside gate stacks and electrical charging with respect to the constituent materials of the FGs. These results pave the way for potential application to non-volatile memory and programmable MOSFET logic device with tunable gate oxide capacitance, without relying solely on the electrical charging used in the current flash-type memory.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Fairouz Ghisani, Kristi Timmo, Mare Altosaar, Souhaib Oueslati, Maris Pilvet, Marit Kauk-Kuusik, Maarja Grossberg
Summary: In this study, the photoelectrochemical properties of Cd-substituted tetrahedrite monograin powders synthesized in different molten salt environments were investigated. The acceptor concentrations were calculated using the Mott-Schottky method, and the valence band maxima were derived from electrochemical impedance measurements.
Article
Electrochemistry
Ishita Naskar, Sathish Deshagani, Melepurath Deepa
Summary: The ASC constructed from zinc cobaltite micro-star shaped porous superstructure coated with zinc oxide nano stubs and coupled with porous flaky activated carbon from green tea exhibits greatly enhanced performance parameters, with increased specific capacitance, energy and power density. The sub-stoichiometry in the ZnO overlayer enhances electrical conductivity and overall electron circulation, leading to deep electrolyte penetration and sufficient ion-accommodation sites in the composite.
ELECTROCHIMICA ACTA
(2021)
Article
Materials Science, Multidisciplinary
Kjetil Karlsen Saxegaard, Eduard Monakhov, Lasse Vines, Kristin Bergum
Summary: ZnOxNy thin films with high mobilities and tunable properties have been studied for their potential use as n-type absorbers in silicon-based tandem solar cells. The O:N ratio affects the structural, optical, and electrical properties of the films, as well as the electrical behavior of the ZnOxNy-Si pn heterojunction diodes. The films exhibit a Zn3N2-like structure or ZnO-like grains with structural disorder, and their optical band gap increases from 1.1 to 1.9 eV with increasing O:N ratio. The free electron concentration and Hall mobility of the films vary with the O:N ratio, reaching up to 1.5 x 1016 cm-3 and 88 cm2/Vs, respectively. The pn heterojunction diodes formed between ZnOxNy films and p-Si show current rectification of 3.7 orders of magnitude, but the extracted built-in voltage is higher than expected, suggesting the influence of defects on the electrical characteristics.
Article
Chemistry, Physical
Ali Riza Deniz
Summary: In this study, lead oxide (PbO2) was used as an interface material in Schottky diode applications, and its morphological properties were analyzed. Reference diode and PbO2/n-Si heterojunctions were fabricated and the parameters were calculated. The experiment showed that the diode parameters were strongly temperature-dependent, and the diode capacitance decreased with increasing frequency.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Physics, Condensed Matter
Seval Aksoy Pehlivanoglu
Summary: The study investigates the physical properties and optical behavior of Zn-doped NiO films, finding that the addition of Zn improves film smoothness and optoelectronic performance. Photodiodes exhibit good photosensitivity and linear response, with barrier heights determined using various methods for validation.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Materials Science, Ceramics
Chun Lin, Yue Chen, Weijian Zhang, Jiaxin Li, Yingbin Lin, Oleg Kolosov, Zhigao Huang
Summary: A hydrometallurgical method was introduced for the recycling of spent lead-acid batteries' waste to obtain beta-PbO as an active material for zinc ion batteries. The obtained beta-PbO exhibited stable specific capacity and ultra-flat charge/discharge voltage platforms. This recycling route is energy-saving and environmentally friendly, replacing the synthesis processes of current zinc ion batteries cathodes.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Karolina Syrek, Olena Tynkevych, Mateusz Wojtas, Marcin Koziel, Lukasz Pieta, Leszek Zaraska
Summary: The possibility of fabricating nanostructured ZnO layers on conductive glass substrates via simple room-temperature electrodeposition was investigated. The deposits' morphology, composition, and semiconducting properties were examined using various techniques. The photoelectrochemical performance of the ZnO photoanodes was found to be greatly influenced by the electrodeposition duration, with the most promising activity observed for the photoanode deposited at -1.5 V vs. SCE for 40 min.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Neeraj Kumar Biswas, Anupam Srivastav, Sakshi Saxena, Anuradha Verma, Runjhun Dutta, Manju Srivastava, Sumant Upadhyay, Vibha Rani Satsangi, Rohit Shrivastav, Sahab Dass
Summary: Harnessing solar energy for clean and sustainable fuel production through photoelectrochemical water oxidation has been extensively studied. However, the efficiency of the light-driven reaction in artificial photosynthesis is limited. In this study, we experimentally analyzed the effect of electrolytic pH on photoelectrochemical syngas production by adjusting the pH of KOH and NaOH electrolytes. The highest photocurrent of 13.80 mA cm(-2) and a photon-to-current conversion efficiency of 43.51% were achieved at pH 13 in the aqueous NaOH electrolyte.
Article
Chemistry, Physical
Abinash Das, Moumita Patra, Mathan P. Kumar, Muthuraaman Bhagavathiachari, Ranjith G. Nair
Summary: The construction and optimization of ZnO-CeO2 heterojunctions exhibit superior photocatalytic performance in the degradation of organic dyes, attributed to the formation of oxygen vacancies induced by Ce3+/Ce4+ ions in CeO2. The optimized catalyst also shows significant visible-light response and high charge-carrier separation efficiency.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Indrajit V. Bagal, Pratik Mane, Maheshwari Arunachalam, Hyojung Bae, Mandar A. Kulkarni, Fawad Tariq, Soon Hyung Kang, Jun-Seok Ha, Sang-Wan Ryu
Summary: By constructing a type-II heterostructure of N-doped ZnO nanowires with an ultra-thin ZnS layer, a core-shell structure is formed which can accelerate the charge transfer process and significantly enhance the resistance to photo-corrosion of N-doped ZnO NWs. The optimal ZnS/N:ZnO core-shell nanowires exhibited a photocurrent density of 0.85 mA cm(-2) at 1.23 Vs RHE, which was 3-fold higher than ZnO nanowires. The reported approach provides possibilities for the construction of efficient and highly stable PEC water-splitting devices.
MATERIALS TODAY PHYSICS
(2023)
Article
Nanoscience & Nanotechnology
Carminna Ottone, Diego Pugliese, Marco Laurenti, Simelys Hernandez, Valentina Cauda, Paula Grez, Lorena Wilson
Summary: ZnO-based anodes were studied for the photoelectrochemical regeneration of NAD(+), with different morphologies of ZnO showing varying influences on the detection of NADH. The photocatalytic activity of ZnO decreased with increasing concentrations of NAD(+), due to absorption of ultraviolet irradiation by the coenzyme. The flower-like film showed a higher electrochemical surface area and led to a significant increase in NAD(+) regeneration compared to both electrochemical oxidation and the only photochemical reaction. Tests with formate dehydrogenase demonstrated that 94% of the regenerated NAD(+) remained enzymatically active.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Aadesh P. Singh, Richard Baochang Wang, Camilla Tossi, Ilkka Tittonen, Bjorn Wickman, Anders Hellman
Summary: Semiconductor heterostructures in PEC cells show improved water oxidation performance, with different band alignment types affecting charge separation. Fe2O3-TiO2 heterostructures with type I band alignment were found to be detrimental, but H-treated TiO2 in the heterostructure led to a type II alignment, significantly increasing the photocurrent density. This work demonstrates the importance of hydrogen doping in tailoring band alignments and provides valuable insights for similar material development.
Article
Electrochemistry
Chenzhong Yao, Huimin Ren, Bohui Wei, Chunxi Yang, Li Ma
Summary: WO3@ZnO core-shell nanoarrays with a Z-scheme heterojunction structure were fabricated by combining electrodeposition and dropping process and used as photoanodes for the production of hydrogen peroxide (H2O2). The WO3@ZnO nanoarray photoanode exhibited a significantly higher photocurrent density (1.57 mA·cm(-2)) compared to the pure ZnO nanoarray photoanode. Under AM 1.5 G (100 mW·cm(-2)) conditions, the WO3@ZnO photoanode achieved a high photoconversion efficiency of 0.53% and Faradic efficiency of 33% for H2O2 production. This work provides an effective approach for the application of Z-scheme heterojunction in the photoelectrochemical synthesis of H2O2.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Review
Nanoscience & Nanotechnology
Jasmin S. Shaikh, Navajsharif S. Shaikh, Yogendra Kumar Mishra, S. S. Pawar, Nazish Parveen, Poonam M. Shewale, Sandip Sabale, Pongsakorn Kanjanaboos, Supareak Praserthdam, Chandrakant D. Lokhande
Summary: Graphene and graphene-based hybrid materials are excellent supercapacitor electrode materials due to their high surface area, electrical conductivity, and cycling stabilities. Aerogels, with their lightweight, high porosity and specific surface area, are pragmatic choices for supercapacitors. By combining graphene aerogels with pseudocapacitive materials, an efficient energy and power density performance can be achieved.
Review
Energy & Fuels
Navajsharif S. Shaikh, V. C. Lokhande, Supareak Praserthdam, Chandrakant D. Lokhande, F. Ezema, D. J. Salunkhe, Jasmin S. Shaikh, Pongsakorn Kanjanaboos
Summary: This article presents the working mechanism and recent materials for Na+- and Zn+-based hybrid supercapacitors, discussing the limitations of activated carbon electrodes and comparative studies. Hybrid supercapacitors are the future direction for smart electronics and hybrid devices, better equipped to tackle related challenges.
Article
Chemistry, Physical
Navajsharif S. Shaikh, Shivaji B. Ubale, Vikas J. Mane, Jasmin S. Shaikh, Vaibhav C. Lokhande, Supareak Praserthdam, Chandrakant D. Lokhande, Pongsakorn Kanjanaboos
Summary: High energy density supercapacitors are needed for recent electronic appliances and hybrid vehicles, which can be achieved by designing proper electrode materials and electrolytes. This review discusses different energy storage mechanisms, engineering of electrode materials, and investigation of hybrid electrodes, showing great potential for commercial usage.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
J. S. Shaikh, N. S. Shaikh, Y. K. Mishra, P. Kanjanaboos, P. M. Shewale, S. Sabale, S. Praserthdam, C. D. Lokhande
Summary: Perovskite solar cells (PSCs) are facing challenges due to high cost and low environmentally stable organic hole transporting materials (HTMs). Researchers are actively seeking inorganic HTMs with practical solutions. Cu-based materials are being explored as potential HTMs in PSCs because of their low cost, suitable band alignment, and high hole mobility.
MATERIALS TODAY CHEMISTRY
(2021)
Article
Energy & Fuels
Navajsharif S. Shaikh, Vaibhav C. Lokhande, Pimsuda Pansa-Ngat, Shivaji Ubale, Jasmin S. Shaikh, Supareak Praserthdam, Sandip R. Sabale, Chandrakant D. Lokhande, Taeksoo Ji, Pongsakorn Kanjanaboos
Summary: The thermal annealing of graphene oxide in a H2S atmosphere was used to obtain sulfur-doped graphene (SG) for supercapacitor applications. SG electrode exhibited high electrical conductivity and interconnected micro-pore structure, facilitating fast transportation of electrons and ions at the electrode-electrolyte interface. Both solid-state and quasi-solid-state hybrid supercapacitors showed high energy density and cycling stability.
Article
Energy & Fuels
Navajsharif S. Shaikh, Sawanta S. Mali, Jyoti Patil, Ajij Mujawar, Jasmin S. Shaikh, Sumayya C. Pathan, Supareak Praserthdam, Chang Kook Hong, Pongsakorn Kanjanaboos
Summary: Researchers have developed a high-performance hybrid supercapacitor using aqueous magnesium-ion-based electrodes, which exhibit excellent specific capacitance and cycling stability. The use of magnesium ions as a replacement for commercial electrochemical supercapacitors overcomes issues such as high cost, toxicity, and inadequate energy density at high power density.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Sumayya C. Pathan, Navajsharif S. Shaikh, Sawanta S. Mali, Jyoti V. Patil, Pranav K. Katkar, Navnath S. Padalkar, Supareak Praserthdam, Chang Kook Hong, Pongsakorn Kanjanaboos, Jasmin S. Shaikh
Summary: In this study, lanthanum-doped iron oxide-integrated graphene oxide (10%La-Fe2O3@GO) as an anode and beta-MnO2 as a cathode material were synthesized successfully through a simple hydrothermal method. The 10%La-Fe2O3@GO exhibited excellent electrochemical performance, attributed to the doping of rare earth La3+ metal ions, providing abundant active sites. The designed aqueous and quasi-solid state ionic liquid-based devices showed high energy density and good cyclability.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Multidisciplinary
J. S. Shaikh, M. Rittiruam, T. Saelee, V. Marquez, N. S. Shaikh, J. S. Santos, P. Kanjanaboos, M. K. Nazeeruddin, S. Praserthdam, P. Praserthdam
Summary: The study investigates Ru-doped hydrous cobalt phosphate as a catalyst for oxygen evolution reaction, achieving good electrocatalytic performance through optimizing nanostructures, showing potential for practical applications.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Chemistry, Physical
Jakapob Noppakhun, Meena Rittiruam, Tinnakorn Saelee, Jasmin Shamshoddin Shaikh, Patcharaporn Khajondetchairit, Supareak Praserthdam, Piyasan Praserthdam
Summary: The integrated carbon capture and conversion (ICCC) is a promising catalytic process to produce syngas from CO2 and CH4. The Ratings concept based on density functional theory (DFT) is applied to overcome the problems caused by inconsistent feed ratio. Catalyst identification and optimization are carried out to improve performance and account for deactivation over time. Temperature change has a greater impact on catalysts compared to feed ratio.
Article
Chemistry, Physical
Durai Govindarajan, Govindasamy Murugadoss, Kamalan Kirubaharan, Rajesh Kumar Manavalan, Gunasekaran Manibalan, Jasmin Shaikh, Mohammad Etesami, Soorathep Kheawhom
Summary: CuO-Ni(OH)2 nanocomposite-based electrode materials, synthesized by a facile low temperature chemical precipitation technique, exhibit impressive electrochemical supercapacitive behavior. Characterization analyses, including XRD, FT-IR, FE-SEM, TEM, and XPS, confirm the structure, phase purity, and surface chemical properties of the prepared nanocomposite. The CuO-Ni(OH)2 composite electrode shows high specific capacitance and superior OER performance, making it a promising alternative electrode for energy storage devices and electrochemical energy devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Green & Sustainable Science & Technology
N. S. Shaikh, J. S. Shaikh, V. Marquez, S. C. Pathan, S. S. Mali, J. V. Patil, C. K. Hong, P. Kanjanaboos, O. Fontaine, A. Tiwari, S. Praserthdam, P. Praserthdam
Summary: This paper critically reviews the methodologies to improve the electrocatalytic performance and selectivity of Sn-based electrocatalysts for CO2 reduction. The impact of composition engineering, nanoengineering, and mechanisms on the electrochemical performance are explored. Sn-based materials show promising prospects as catalysts for electrochemical CO2 reduction, with potential for further optimization and integration with renewable energy sources.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Chemistry, Multidisciplinary
Amruta Koli, Abhishek Kumar, Akshata Pattanshetti, Amit Supale, Kalyanrao Garadkar, Jian Shen, Jasmin Shaikh, Supareak Praserthdam, Radha Kishan Motkuri, Sandip Sabale
Summary: This work presents an efficient method for synthesizing hierarchically porous carbon using wheat bran waste. The obtained carbon material shows high CO2 capture capacity, rapid dye removal capacity, and superior electrocatalytic activity.
Article
Chemistry, Inorganic & Nuclear
Rajendra C. Pawar, Plassidius J. Chengula, Haritham Khan, Hazina Charles, Caroline S. Lee
Summary: The photocatalytic approach has the potential to address the barriers to green energy production. By synthesizing a two-dimensional reduced niobium oxide photocatalyst with copper incorporation, the study achieved remarkable photocatalytic performance due to efficient charge separation and light utilization. This opens up new possibilities for efficient photocatalysts in generating green fuel.
DALTON TRANSACTIONS
(2023)
Review
Chemistry, Physical
Jasmin S. Shaikh, Meena Rittiruam, Tinnakorn Saelee, Victor Marquez, Navajsharif S. Shaikh, Patcharaporn Khajondetchairit, Sumayya C. Pathan, Noppakhate Jiraborvornpongsa, Supareak Praserthdam, Piyasan Praserthdam
Summary: High entropy materials (HEMs) have excellent properties and significant impact on catalysis technologies. High-entropy stabilized catalysts enhance tuning of catalytically active sites by controlling material structures and electronic structures. Lattice distortion in HEMs facilitates the activation and transportation of active sites. Different types of HEMs have wide applications in catalysis, leading to the development of improved catalysts. This review presents the recent advancements in HEMs-based electrocatalysis, photocatalysis, and thermocatalysis for CO2 conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Inorganic & Nuclear
Navajsharif S. Shaikh, Vaibhav C. Lokhande, Taeksoo Ji, Shivaji Ubale, Vikas J. Mane, Chandrakant D. Lokhande, Haseen M. Shaikh, Jasmin S. Shaikh, Supareak Praserthdam, Sandip Sabale, Pongsakorn Kanjanaboos
Summary: In recent years, modern appliances require high energy density with a burst power supply. Hybrid supercapacitors show high performance based on high energy density without compromising power density and stability over thousands of charge-discharge cycles. In this work, the optimized hybrid electrodes using lanthanum-doped hematite (lanthanum-doped iron oxide) as a negative electrode and hydrous cobalt phosphate as a battery-type positive electrode have been successfully fabricated via a simple hydrothermal method and a facile co-precipitation method, respectively. The hybrid capacitor device based on these electrodes exhibited high energy density, capacitance retention, and excellent electrochemical performance.
DALTON TRANSACTIONS
(2022)
Article
Energy & Fuels
Siddharth Sradhasagar, Omkar Subhasish Khuntia, Srikanta Biswal, Sougat Purohit, Amritendu Roy
Summary: In this study, machine learning models were developed to predict the bandgap and its character of double perovskite materials, with LGBMRegressor and XGBClassifier models identified as the best predictors. These models were further employed to predict the bandgap of novel bismuth-based transition metal oxide double perovskites, showing high accuracy, especially in the range of 1.2-1.8 eV.
Article
Energy & Fuels
Wei Shuai, Haoran Xu, Baoyang Luo, Yihui Huang, Dong Chen, Peiwang Zhu, Gang Xiao
Summary: In this study, a hybrid model based on numerical simulation and deep learning is proposed for the optimization and operation of solar receivers. By applying the model to different application scenarios and considering multiple performance objectives, small errors are achieved and optimal structure parameters and heliostat scales are identified. This approach is not only applicable to gas turbines but also heating systems.
Article
Energy & Fuels
Mubashar Ali, Zunaira Bibi, M. W. Younis, Muhammad Mubashir, Muqaddas Iqbal, Muhammad Usman Ali, Muhammad Asif Iqbal
Summary: This study investigates the structural, mechanical, and optoelectronic properties of the BaCuF3 fluoroperovskite using the first-principles modelling approach. The stability and characteristics of different cubic structures of BaCuF3 are evaluated, and the alpha-BaCuF3 and beta-BaCuF3 compounds are found to be mechanically stable with favorable optical properties for solar cells and high-frequency UV applications.
Article
Energy & Fuels
Dong Le Khac, Shahariar Chowdhury, Asmaa Soheil Najm, Montri Luengchavanon, Araa mebdir Holi, Mohammad Shah Jamal, Chin Hua Chia, Kuaanan Techato, Vidhya Selvanathan
Summary: A novel recycling system is proposed in this study to decompose and reclaim the constituent materials of organic-inorganic perovskite solar cells (PSCs). By utilizing a one-step solution process extraction approach, the chemical composition of each layer is successfully preserved, enabling their potential reuse. The proposed recycling technique helps mitigate pollution risks, minimize waste generation, and reduce recycling costs.
Article
Energy & Fuels
Peijie Lin, Feng Guo, Xiaoyang Lu, Qianying Zheng, Shuying Cheng, Yaohai Lin, Zhicong Chen, Lijun Wu, Zhuang Qian
Summary: This paper proposes an open-set fault diagnosis model for PV arrays based on 1D VoVNet-SVDD. The model accurately diagnoses various types of faults and is capable of identifying unknown fault types.
