Materials Science for Energy Technologies最新文献

{"title":"Development of CdS/TNTA nanocomposite to improve performance of simultaneous electrocoagulation-photocatalysis process for hydrogen production and ciprofloxacin elimination","authors":"Reno Pratiwi ,&nbsp;Muhammad Ibadurrohman ,&nbsp;Eniya Listiani Dewi ,&nbsp;Ratnawati ,&nbsp;Rike Yudianti ,&nbsp;Saddam Husein ,&nbsp;Slamet","doi":"10.1016/j.mset.2025.01.001","DOIUrl":"10.1016/j.mset.2025.01.001","url":null,"abstract":"<div><div>This study aimed to enhance the effectiveness of the simultaneous combination of electrocoagulation and photocatalysis processes by modifying the configuration of the photocatalyst. A heterojunction mechanism was developed by integrating CdS with a photocatalyst using<!--> <!-->a TiO₂ nanotube array (TNTA) <span><span>[1]</span></span>. This mechanism is designed to enhance photocatalytic efficiency by reducing electron-hole recombination. The successful synthesis of CdS/TNTA nanocomposite was confirmed using various characterization methods, including XRD, HRTEM, FESEM, UV–Vis DRS, PL, transient photocurrent, and XPS. The results showed that CdS/TNTA worked better than TNTA in a single photocatalysis process, achieving improved Ciprofloxacin (CIP) removal (7.9 % to 13.8 %) and hydrogen gas production (0.006 to 0.156 mmol/m²plate). Simultaneously operating electrocoagulation and photocatalysis systems in the respective optimized settings resulted in significant enhancements. Hydrogen gas yield increased by 44 % (from 443 to 636 mmol/m² plate) compared to using only TNTA, while CIP removal improved from 79 % to 83 %. This study demonstrates that the synthesis of CdS/TNTA photocatalysts may be a promising approach to achieving high performance of hydrogen recovery while simultaneously removing CIP from wastewater.</div></div>","PeriodicalId":18283,"journal":{"name":"Materials Science for Energy Technologies","volume":"8 ","pages":"Pages 121-130"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143156393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergetic effects of multiple junction and surface hydroxyl in Cu/CuO/Cu2O/TiO2 heterostructures towards highly efficient photocatalysts for hydrogen generation","authors":"Riki Subagyo ,&nbsp;Garcelina Rizky Anindika ,&nbsp;Afif Akmal Aufkani ,&nbsp;Lei Zhang ,&nbsp;Hosta Ardhyananta ,&nbsp;R.Y. Perry Burhan ,&nbsp;Zjahra Vianita Nugraheni ,&nbsp;Syafsir Akhlus ,&nbsp;Hasliza Bahruji ,&nbsp;Didik Prasetyoko ,&nbsp;Diana Vanda Wellia ,&nbsp;Atthar Luqman Ivansyah ,&nbsp;Arramel ,&nbsp;Yuly Kusumawati","doi":"10.1016/j.mset.2025.02.001","DOIUrl":"10.1016/j.mset.2025.02.001","url":null,"abstract":"<div><div>The implementation of titanium dioxide (TiO₂) as a photocatalyst material in hydrogen (H₂) evolution reaction (HER) has embarked renewed interest in the past decade. Rapid electron-hole pairs recombination and wide band gap of a photo-sensitive material of TiO₂ are detrimental toward the targeted catalytical reaction. In this study, we present the rational design, fabrication, photocatalytic performance of TiO₂-Cu/CuO/Cu₂O heterostructures (CuTi) using viable chemical reduction method. The Z-scheme and S-scheme are succesfully generated across the TiO₂/CuO/Cu₂O interfaces, while the Schottky junction arises on the Cu perimeters. This is evidenced from the blue shifted about 0.3 eV of Cu 2p core level determined by using X-ray photoemission spectroscopy (XPS), in combination with the formation of inverse V-shape of the Mott-Schottky plots. In addition, we find that Cu/CuO/Cu₂O facilitates photon absorption range up to the visible region. The multiple heterojunction and the large number of OH_surface enhanced charge carrier transfer are associated to the suppression of photoluminescence (PL) intensity, high surface hydroxyl (OH_surface) density in CuTi probed by XPS, and fast electron transfer based on the electrochemical measurements. The presence of OH_surface inhibits the recombination of electron. A significant H₂ photogeneration rate enhancement is achieved when an optimized 5 wt% Cu/CuO/Cu₂O concentration is used on TiO₂ to achieve 7,157.19 μmol·g⁻¹ (1,789.30 μmol·g⁻¹·h⁻¹). Based on this finding, zero emission energy innitiative could be materialized under multiple heterojunctions in photocatalytic process is beneficial for enhancing the H₂ production.</div></div>","PeriodicalId":18283,"journal":{"name":"Materials Science for Energy Technologies","volume":"8 ","pages":"Pages 131-142"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Li-S-B Glass-Ceramics: A Novel electrode materials for energy storage technology","authors":"Jintara Padchasri ,&nbsp;Sumeth Siriroj ,&nbsp;Amorntep Montreeuppathum ,&nbsp;Phakkhananan Pakawanit ,&nbsp;Nattapol Laorodphan ,&nbsp;Narong Chanlek ,&nbsp;Yingyot Poo-arporn ,&nbsp;Pinit Kidkhunthod","doi":"10.1016/j.mset.2024.11.002","DOIUrl":"10.1016/j.mset.2024.11.002","url":null,"abstract":"<div><div>Future alternatives for an electrode lithium borate-based glass–ceramic (GC) has been developed for rechargeable lithium-ion batteries. The composition of the GC is xNiO-(0.20-x)MnO₂-0.80(Li₂S:B₂O₃), where x varies from 0.10, 0.13, 0.15, and 0.16. The GC were fabricated using the melt-quenching technique. The nature of the GC was determined using XRD examinations. The SEM-EDS analysis indicates the presence along with the distribution of components in the plate glasses. The battery charge/discharge tests showed that the 0.16NiO-0.04MnO₂-0.8(Li₂S:B₂O₃) (0.16Ni-0.04Mn) glass-ceramics exhibited a potential range of 0.8–1.1 V and a discharge capacity of 70 mAh.g⁻¹ during the first cycle. Additionally, these GC demonstrated excellent cycling stability for over 100 cycles. As the same time, electrical impedance spectroscopy (EIS) measurements showed that the Li diffusion coefficient in 0.16Ni-0.04Mn GC was found to be 0.34 × 10⁻¹⁰ and 0.75 × 10⁻¹¹ cm².s⁻¹ for before and after cycling, which is smaller than 0.10Ni-0.10Mn. Synchrotron-based XANES highlighted the oxidation state of Ni²⁺, as well as the mixing of Mn^2+/3+ and S⁻¹. The addition of Ni and Mn into the lithium-sulfur borate glass system has improved its electrochemical characteristics, making it a very interesting and economically viable option for energy storage technology electrodes.</div></div>","PeriodicalId":18283,"journal":{"name":"Materials Science for Energy Technologies","volume":"8 ","pages":"Pages 111-120"},"PeriodicalIF":0.0,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142721787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Selective hydrogenation of 1,3-butadiene to butenes on ceria-supported Pd, Ni and PdNi catalysts: Combined experimental and DFT outlook","authors":"Toyin Shittu ,&nbsp;Aasif A. Dabbawala ,&nbsp;Labeeb Ali ,&nbsp;Abbas Khaleel ,&nbsp;Muhammad Z. Iqbal ,&nbsp;Dalaver H. Anjum ,&nbsp;Kyriaki Polychronopoulou ,&nbsp;Mohammednoor Altarawneh","doi":"10.1016/j.mset.2024.11.001","DOIUrl":"10.1016/j.mset.2024.11.001","url":null,"abstract":"<div><div>The regulation of catalyst activity and selectivity using a reducible support for the industrially relevant hydrogenation of 1,3-butadiene to more valuable butene products was achieved. Supported palladium and nickel–palladium catalysts on ceria were prepared and characterized with hydrogen temperature programmed reduction (H₂-TPR), hydrogen temperature programmed desorption (H₂-TPD), X-ray photoelectron spectroscopy (XPS), high resolution transmission electron microscopy (HR-TEM), high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM), temperature programmed oxidation (TPO), energy dispersive spectroscopy (EDS), and N₂ adsorption–desorption to examine their chemical and physical properties. Pathways guiding the reaction were determined using the density functional theory (DFT). H₂-TPR confirmed that palladium oxide was reduced, and nickel oxide species strongly interacted with the CeO₂ support. The Ce³⁺ concentration determined by XPS showed that all catalysts surface contained the Ce reduced state. The catalysts showed a similar BET surface area, with 4Pd–Ce presenting the lowest value due to particle aggregation, which was confirmed from the EDS mapping analysis. Butadiene conversion consistently increased with temperature (40 °C–120 °C) until full conversion was reached on all the Pd catalysts while the maximum conversion on the 4Ni-Ce catalyst was 88 % at 120 °C. Product distribution revealed that 4 % Pd content directed the products toward butane when 40 °C was exceeded. Constructed mechanisms by DFT calculations featured low reaction barriers for the involved surface hydrogenation steps, and thus, they accounted for the observed low temperature of the surface hydrogenation activity. Selective formation of 1-butene partially stemmed from its relatively weak binding to Ni sites in reference to Pd sites. The mapped-out mechanisms entailed a higher reaction barrier for the formation of 2-butene, in agreement with the experimental observation pertinent to its formation at higher temperatures when compared with that of 1-butene.</div></div>","PeriodicalId":18283,"journal":{"name":"Materials Science for Energy Technologies","volume":"8 ","pages":"Pages 96-110"},"PeriodicalIF":0.0,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Compositing LaSrMnO3 perovskite and graphene oxide nanoribbons for highly stable asymmetric electrochemical supercapacitors","authors":"Asmaa R. Heiba ,&nbsp;Mostafa M. Omran ,&nbsp;Rabab M. Abou Shahba ,&nbsp;Abdelghaffar S. Dhmees ,&nbsp;Fatma A. Taher ,&nbsp;Ehab El Sawy","doi":"10.1016/j.mset.2024.10.001","DOIUrl":"10.1016/j.mset.2024.10.001","url":null,"abstract":"<div><div>The anticipated large contribution of renewable energy resources to the sector of energy production strongly motivated the development of energy storage technologies, of which supercapacitors have drawn a lot of attention. In this work, Lanthanum-Strontium-Manganese-oxide (LSMO) perovskite nanoparticles, graphene oxide nanoribbons (GONRs), and LSMO-GONRs composite were synthesized and tested as electrode materials for supercapacitor applications. The LSMO was synthesized using the co-precipitation/calcination method, while the GONRs were synthesized using the oxidative unzipping of multi-walled carbon nanotubes. The physical/chemical structures were studied using XRD, FT-IR, SEM, TEM, SAED, and XPS. In 1 M KOH, the LSMO-GONRs electrode exhibited a specific capacitance of 490F/g compared to 342F/g and 294F/g for GONRs and LSMO electrodes, respectively, at 1 A/g, showcasing a performance that is not just superior but truly impressive, to the different types of perovskite/carbon-based material composites. The fabricated asymmetric SC device of LSMO-GONRs//GONRs exhibited a potential window of 1.7 V, a specific capacitance of 92.3F/g, an energy density of 38 Wh/kg, and a power density of 860 W/kg at 1 A/g. Moreover, the LSMO-GONRs//GONRs device showed excellent capacity retention and Coulombic efficiency after 10,000 cycles at 10 A/g, revealing the promising employment of LSMO-GONRs composite as a highly stable material for supercapacitor applications.</div></div>","PeriodicalId":18283,"journal":{"name":"Materials Science for Energy Technologies","volume":"8 ","pages":"Pages 82-95"},"PeriodicalIF":0.0,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142526523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Facile synthesis and electrochemical performance of bacterial cellulose/reduced graphene oxide/NiCo-layered double hydroxide composite film for self-standing supercapacitor electrode","authors":"A. Muhammad Afdhal Saputra ,&nbsp;Marpongahtun ,&nbsp;Andriayani ,&nbsp;Diana Alemin Barus ,&nbsp;Ronn Goei ,&nbsp;Alfred Tok ,&nbsp;Muhammad Ibadurrahman ,&nbsp;H.T.S Risky Ramadhan ,&nbsp;Muhammad Irvan Hasibuan ,&nbsp;Ton Peijs ,&nbsp;Saharman Gea","doi":"10.1016/j.mset.2024.08.001","DOIUrl":"10.1016/j.mset.2024.08.001","url":null,"abstract":"<div><p>This study employs a cost-efficient method to create a pliable BC/rGO-NiCo-LDH electrode film on a bacterial cellulose base. X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX) analyses verified the incorporation of reduced graphene oxide (rGO) and nickel–cobalt layered double hydroxide (NiCo-LDH) into the bacterial cellulose structure. The BC/rGO-NiCo-LDH composite material exhibited high-temperature stability and achieved a specific capacitance of 311 F g⁻¹ at a scan rate of 0.1 mV/s, surpassing that of earlier cellulose electrodes. The electrode film showed exceptional mechanical capabilities, displaying flexibility and load resistance without any structural damage. The film’s flexibility and lightweight properties were improved due to the low density of 0.656 g cm⁻³, which is a result of the nanoporous structure and intrinsic low density of rGO and cellulose. A retention ratio of 0.40 for storage modulus at a glass transition temperature of around 90°C demonstrated positive mechanical performance. This cost-effective and uncomplicated synthesis approach produced a BC/rGO-NiCo-LDH electrode with potential. The material possessed favourable mechanical and electrochemical characteristics, making it suitable for wearable electronics.</p></div>","PeriodicalId":18283,"journal":{"name":"Materials Science for Energy Technologies","volume":"8 ","pages":"Pages 66-81"},"PeriodicalIF":0.0,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S258929912400017X/pdfft?md5=fd04eadb0ba29e0223deec7e4f851883&pid=1-s2.0-S258929912400017X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142021480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A comprehensive review of the state-of-the-art of proton exchange membrane water electrolysis","authors":"Nurettin Sezer ,&nbsp;Sertac Bayhan ,&nbsp;Ugur Fesli ,&nbsp;Antonio Sanfilippo","doi":"10.1016/j.mset.2024.07.006","DOIUrl":"10.1016/j.mset.2024.07.006","url":null,"abstract":"<div><p>Hydrogen has attracted growing research interest due to its exceptionally high energy per mass content and being a clean energy carrier, unlike the widely used hydrocarbon fuels. With the possibility of long-term energy storage and re-electrification, hydrogen promises to promote the effective utilization of renewable and sustainable energy resources. Clean hydrogen can be produced through a renewable-powered water electrolysis process. Although alkaline water electrolysis is currently the mature and commercially available electrolysis technology for hydrogen production, it has several shortcomings that hinder its integration with intermittent and fluctuating renewable energy sources. The proton exchange membrane water electrolysis (PEMWE) technology has been developed to offer high voltage efficiencies at high current densities. Besides, PEMWE cells are characterized by a fast system response to fluctuating renewable power, enabling operations at broader partial power load ranges while consistently delivering high-purity hydrogen with low ohmic losses. Recently, much effort has been devoted to improving the efficiency, performance, durability, and economy of PEMWE cells. The research activities in this context include investigations of different cell component materials, protective coatings, and material characterizations, as well as the synthesis and analysis of new electrocatalysts for enhanced electrochemical activity and stability with minimized use of noble metals. Further, many modeling studies have been reported to analyze cell performance considering cell electrochemistry, overvoltage, and thermodynamics. Thus, it is imperative to review and compile recent research studies covering multiple aspects of PEMWE cells in one literature to present advancements and limitations of this field. This article offers a comprehensive review of the state-of-the-art of PEMWE cells. It compiles recent research on each PEMWE cell component and discusses how the characteristics of these components affect the overall cell performance. In addition, the electrochemical activity and stability of various catalyst materials are reviewed. Further, the thermodynamics and electrochemistry of electrolytic water splitting are described, and inherent cell overvoltage are elucidated. The available literature on PEMWE cell modeling, aimed at analyzing the performance of PEMWE cells, is compiled. Overall, this article provides the advancements in cell components, materials, electrocatalysts, and modeling research for PEMWE to promote the effective utilization of renewable but intermittent and fluctuating energy in the pursuit of a seamless transition to clean energy.</p></div>","PeriodicalId":18283,"journal":{"name":"Materials Science for Energy Technologies","volume":"8 ","pages":"Pages 44-65"},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2589299124000168/pdfft?md5=9a4aa9d84edb6ff44dfb3c1e41064537&pid=1-s2.0-S2589299124000168-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141847120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing electrochemical properties of bacterial cellulose-derived carbon nanofibers through physical CO2 activation","authors":"Likkhasit Wannasen ,&nbsp;Narong Chanlek ,&nbsp;Wiyada Mongkolthanaruk ,&nbsp;Sujittra Daengsakul ,&nbsp;Supree Pinitsoontorn","doi":"10.1016/j.mset.2024.07.005","DOIUrl":"10.1016/j.mset.2024.07.005","url":null,"abstract":"<div><p>Carbon nanofiber (CNF) derived from carbonization of bacterial cellulose (BC), with a unique three-dimensional porous nanostructure, has received significant interest in electrochemical applications. In this study, CNF samples were physically activated in CO₂ at different temperatures and durations. Raman spectroscopy and FTIR analysis showed that CO₂ activation caused hexagonal lattice defects, disorder, and oxygen-related functional groups in an amorphous carbon structure. CNF surface morphology changed after physical activation, reducing fiber diameter to 55 nm and introducing mesopores. Through activation temperature and time adjustments, surface area (870.1 m²/g) and micropore surface area (535.6 m²/g) and pore volume (0.2148 cm³/g) increased. EDX elemental analysis showed that activated CNF had a carbon concentration of &gt; 90 %, while XPS analysis showed surface functional groups like C-C (sp²) and C-C (sp³) hybridization, which could improve electrolyte ion adsorption and accessibility. Electrochemical properties improved owing to CO₂ activation. The optimal activation condition of 800 ℃ for 60 min resulted in the highest specific area capacitance of 552 mF cm⁻² at 1 mA cm⁻². This activated CNF electrode retained capacitance nearly unchanged up to 3,000 cycles. It also achieved the highest energy density of 76.7 mWh cm⁻² at 500 mW cm⁻². This study demonstrates the efficacy of CO₂ physical activation for enhancing the electrochemical properties of CNF electrodes. The findings also highlight the importance of tailoring activation conditions, providing valuable insights for the design of advanced energy storage materials.</p></div>","PeriodicalId":18283,"journal":{"name":"Materials Science for Energy Technologies","volume":"8 ","pages":"Pages 13-23"},"PeriodicalIF":0.0,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2589299124000156/pdfft?md5=1d1d74f6205ed5e1410201dcc372bd19&pid=1-s2.0-S2589299124000156-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141850805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of the addition of cement ash to the PVA/TEOS/HCl gel electrolyte on the performance of aluminium air batteries","authors":"Firman Ridwan ,&nbsp;Dandi Agusta ,&nbsp;Muhammad Akbar Husin ,&nbsp;Dahyunir Dahlan","doi":"10.1016/j.mset.2024.07.003","DOIUrl":"10.1016/j.mset.2024.07.003","url":null,"abstract":"<div><p>Cement manufacturing presents substantial environmental challenges due to the volume of waste generated, including cement ash. Therefore, it is crucial to discover novel methods to utilize cement waste effectively. This study aimed to examine the impact of different concentrations of cement ash (1, 1.5, 2, and 2.5 g) on the conductivity of PVA/TEOS/HCl (PTH) gel electrolyte materials. The primary goal was to determine the ideal concentration of cement ash that would yield maximum conductivity. The research findings demonstrated that the PTH2.5CA sample attained the greatest conductivity of 2.78 mS/cm when adding 2.5 g of cement ash. In addition, this material exhibits a capacity of 0.354 mAh, a specific capacity of 0.12826 mAh/g, and a density capacity of 0.11813 mAh/cm². The power and power densities were measured as 6.48 mW/cm² and 25.94 mW, respectively. These findings offer promising prospects for implementing sustainable practices in the industry and highlight the viability of utilizing cement waste as a significant element in battery membrane materials. This technique addresses environmental issues related to cement waste and contributes to advancing a more eco-friendly waste management system.</p></div>","PeriodicalId":18283,"journal":{"name":"Materials Science for Energy Technologies","volume":"8 ","pages":"Pages 24-31"},"PeriodicalIF":0.0,"publicationDate":"2024-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2589299124000132/pdfft?md5=7730edd5e95b308bd1147aa4fa41f411&pid=1-s2.0-S2589299124000132-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141698958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrochemical applications of CdO-Co-ZnO nanocomposites, their synthesis and characterization reveal their multifunctional abilities","authors":"N. Rajkamal ,&nbsp;K. Sambathkumar ,&nbsp;K. Parasuraman ,&nbsp;K. Bhuvaneswari ,&nbsp;R. Uthrakumar ,&nbsp;K. Kaviyarasu","doi":"10.1016/j.mset.2024.07.002","DOIUrl":"10.1016/j.mset.2024.07.002","url":null,"abstract":"<div><p>In this study, we investigated the electrochemical catalysis potential of hybrid nanocomposites containing CdO, Co and ZnO nanocomposites, as opposed to Zn-O doped Co nanocomposites, have weaker Coulomb interactions due their ionic bonds. Because CdO and Co form a covalent bond, Co interacts more strongly with O than Zn. In order to reduce nanoparticle crystallinity, oxygen defects improve the interaction between −O and oxygen defects in the lattice. From SEM micrographs, it appears that CdO does not completely change under the influence of dopants. It can be seen from the SEM image that both materials have very tightly packed particles. The Co and CdO dopants in ZnO nanocomposites prevent them from absorbing a large range of visible wavelengths. It is more energy-dense for nanocomposites with 5.28 eV to compare to 5.14 eV nanocomposites. The fact that CdO matrix has a tuneable bandgap is evident since different types of dopants are used in its manufacture. There are at least three distinct absorption modes in Co nanocomposites doped with CdO, around 450, 498, and 676 cm⁻¹. In addition to its absorption from 450 cm⁻¹ and 498 cm⁻¹ vibrational modes, Co-O stretching absorption along the [1<!--> <!-->0<!--> <!-->1] plane has also been observed at 676 cm⁻¹. As a method of studying charge carriers, photoluminescence spectroscopy is usually used. This method can be used to analyze electron-hole pairs (e⁻/h⁺) formed by semiconducting particles. It is in the blue emission range between the luminescence band of 615 nm and the valence band of 635 nm. With increasing cobalt and zinc concentrations, CdO nanomaterials lose their remanent magnetization. CdO has been demonstrated to have significant coercive effects in both pure and additively incorporated solutions regardless of their anisotropic, morphological, porosity, and particle size distribution. Electrochemical impedance spectrum measurements were conducted between 100 kHz and 0.01 Hz. According to the Nyquist plot, purity CdO, CdO doped Co, and CdO doped ZnO nanocomposites show a high frequency resistance to charge transfer. Nanocomposites that contained CdO doped Co &amp; ZnO were exposed to UV light for 120 min to remove the solution. The degradation of MO is virtually nonexistent when no photocatalyst is present, but with a photocatalyst, degradation can reach 92.56 %.</p></div>","PeriodicalId":18283,"journal":{"name":"Materials Science for Energy Technologies","volume":"8 ","pages":"Pages 1-12"},"PeriodicalIF":0.0,"publicationDate":"2024-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2589299124000120/pdfft?md5=c62ef97e5a210222bcdfce20ec61ed45&pid=1-s2.0-S2589299124000120-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141693506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}