Nano-Structures & Nano-Objects最新文献

{"title":"Innovative materials for energy storage systems and photovoltaic solar technologies: A review","authors":"Sana boutagount ,&nbsp;Abdeslam El Fanaoui ,&nbsp;Nadya Douihi ,&nbsp;Bahcine Bakiz ,&nbsp;Abdeljalil Benlhachemi ,&nbsp;Aziz Taoufyq ,&nbsp;Ahmed Ihlal","doi":"10.1016/j.nanoso.2025.101562","DOIUrl":"10.1016/j.nanoso.2025.101562","url":null,"abstract":"<div><div>Energy production and storage systems are of prime importance for both scientific research and end-users, given the urgent need to reduce environmental and climatic impacts associated with conventional energy technologies. Energy storage plays a key role in managing the balance between supply and demand, while mitigating the intermittency of renewable energy sources. The development of these systems is therefore essential if we are to meet today’s energy challenges. With this in mind, advanced materials stand out as promising solutions for applications in solar cells and storage systems. These materials offer significant advantages, such as lower production costs and enhanced efficiency. Their abundance in Earth’s crust and their non-toxicity reinforce their relevance for sustainable and environmentally friendly solutions. This review provides a comprehensive analysis of solar cell technologies and the fundamentals of energy storage systems, with a particular focus on the convergence of materials engineering and storage strategies. Special attention is devoted to thin films, including two-dimensional transition metal dichalcogenides, metal oxides, and emerging alternative thin films, highlighting their roles in improving charge transport, stability, and overall device performance. The integration of these materials into alternative energy storage systems is also discussed, underscoring their capacity to combine high efficiency with environmental compatibility. The findings reveal both the opportunities and limitations of thin films in advancing solar energy conversion and energy storage. While remarkable progress has been achieved in terms of efficiency and stability, challenges such as large-scale integration, cost reduction, and long-term durability remain critical. Finally, the review emphasizes future directions, pointing to the need for multidisciplinary approaches and the exploration of novel material combinations to enable the next generation of sustainable energy systems.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"44 ","pages":"Article 101562"},"PeriodicalIF":5.45,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145263496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-performance gas sensors based on nanostructured metal oxide semiconductors: Materials engineering and sensing mechanisms","authors":"Nivishna R,&nbsp;Anilkumar P,&nbsp;Nisha Jenifar A","doi":"10.1016/j.nanoso.2025.101560","DOIUrl":"10.1016/j.nanoso.2025.101560","url":null,"abstract":"<div><div>The rapid rise in industrialization and urbanization has significantly increased air pollution, posing serious risks to human health and the environment. Although various gas detection methods have been developed, they often suffer from high costs, complex operation, and limited suitability for real-time monitoring. To address these challenges, extensive research has focused on developing efficient environmental sensors, progressing from theoretical studies to practical applications. Among these, Metal Oxide Semiconductor (MOS)-based gas sensors have emerged as a promising option owing to their cost-effectiveness, high sensitivity, selectivity, and reliable performance. This review provides a comprehensive overview of recent advancements in gas sensor technology, with particular emphasis on synthesis techniques, morphological modifications, and the gas-sensing mechanisms of MOS materials. Furthermore, it highlights the critical relationship between material properties and sensor performance and discusses future research directions aimed at advancing MOS-based gas sensing technologies.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"44 ","pages":"Article 101560"},"PeriodicalIF":5.45,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145263495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultrasound-assisted photocatalytic oxidation of isopropanol using Fe₂O₃ nanoparticles","authors":"A.M. Dorgham,&nbsp;Rania Farouq","doi":"10.1016/j.nanoso.2025.101561","DOIUrl":"10.1016/j.nanoso.2025.101561","url":null,"abstract":"<div><div>Photocatalytic alcohol decomposition is crucial for the preparation of valuable organics, and efficient treatment of isopropyl alcohol (IPA)-contaminated water is a priority in the semiconductor industry. In this study, Fe₂O₃ nanoparticles were developed as a photoactive, environmentally friendly catalyst for the oxidation of isopropanol to acetone. The catalyst demonstrated high efficiency in an oxidative process utilizing O₂ as the sole oxidant, without the need for additional surfactants or nitrogenous bases. The novelty of the process lies in the combination of sonolysis and photocatalysis, which enhances mass transfer and accelerates acetone production. Characterization of the Fe₂O₃ nanoparticles was conducted using X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Dynamic Light Scattering (DLS), Transmission Electron Microscopy (TEM), and Scanning Electron Microscopy (SEM). This approach provides a promising strategy for the rapid mineralization of isopropanol, offering potential applications in the semiconductor industry by reducing both processing time and costs.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"44 ","pages":"Article 101561"},"PeriodicalIF":5.45,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145263497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Silver nanowires network for transparent electrode in dye-sensitized solar cell","authors":"Qamar Wali ,&nbsp;Sidra Yousaf ,&nbsp;Nahin Ar Rabbani ,&nbsp;It Ee Lee","doi":"10.1016/j.nanoso.2025.101559","DOIUrl":"10.1016/j.nanoso.2025.101559","url":null,"abstract":"<div><div>Silver nanowires (Ag NWs) network are promising alternatives to transparent conducting oxides and are being used as flexible transparent conducting electrodes in various optoelectronic devices. Indium tin oxide (ITO) deposited on a glass/polymer substrate mostly employs conducting electrodes in third-generation solar cells. This work has replaced expensive ITO with an inexpensive Ag NWs network deposited on glass substrate that acts as semi-transparent top electrode in dye-sensitized solar cell (DSSC). The synthesized electrodes show transparency in the range of 80–91 % and sheet resistance as low as 50 Ω cm⁻². The photovoltaic parameters of the fabricated DSSC are ∼0.54 V, 10.28 mA cm⁻², 3.38 % for open circuit voltage, short circuit current density, power conversion efficiency, respectively. The AgNWs based electrode shows promise as a cost effective transparent conducting electrode. It is a proof of concept that can be expanded to improve power conversion efficiency in futuristic devices.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"44 ","pages":"Article 101559"},"PeriodicalIF":5.45,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145217864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Iron compounds from Euterpe oleracea Mart (açai) seed ash as electrocatalyst for oxygen evolution reaction","authors":"Marcondes L. da S. Azevedo ,&nbsp;Evanimek B.S. da Silva ,&nbsp;Jakeline R.D. dos Santos ,&nbsp;Kelly C. Gomes ,&nbsp;Júlio C. de O. Freitas ,&nbsp;Carlos A. Martínez-Huitle ,&nbsp;Marco A. Morales","doi":"10.1016/j.nanoso.2025.101558","DOIUrl":"10.1016/j.nanoso.2025.101558","url":null,"abstract":"<div><div>The production of pulp from <em>Euterpe oleracea</em> Mart. palm fruits (açaí) generates a significant amount of primary solid waste, whose inadequate disposal poses environmental risks. The açaí seeds ash contains iron compounds and was used as an electrocatalyst in the oxygen evolution reaction (OER) process. The ashes were obtained by calcination of açaí seeds. The samples were characterized by several techniques, including XRF, XRD, TEM, FTIR, Mössbauer and magnetometry. The Mössbauer results revealed the presence of metal iron (α-Fe) and magnetite (Fe₃O₄). The electrochemical evaluation demonstrated that açaí seeds ash had promising catalytic activity for OER, exhibiting an overpotential of 349 mV at 10 mA cm⁻². The analysis of the Tafel curve indicated a superior electron transfer kinetics of 61 mV dec⁻¹, and the chronopotentiometry tests for 16 h showed electrochemical stability. The catalytic performance was attributed to the biochar composition, rich in iron in several oxidation states, which facilitates the charge transfer. These results suggested that açaí seed ash can be a valuable source for the development of efficient electrocatalysts for OER, contributing to the production of hydrogen and the circular economy.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"44 ","pages":"Article 101558"},"PeriodicalIF":5.45,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Catalytic properties of Thuja occidentalis green synthesized Yb doped MgFe2O4, CuFe2O4 and MgCuFe2O4 ferrite nanoparticles","authors":"Nisha Devi ,&nbsp;Kuldeep Kumar ,&nbsp;Ashwani Kumar ,&nbsp;Naveen Thakur","doi":"10.1016/j.nanoso.2025.101554","DOIUrl":"10.1016/j.nanoso.2025.101554","url":null,"abstract":"<div><div>The study explored the preparation of plant extract from <em>Thuja occidentalis</em> and the green synthesis of Ytterbium (Yb) doped ferrite nanoparticles, including MgFe₂O₄, CuFe₂O₄ and MgCuFe₂O₄. The plant extract was prepared by boiling fresh <em>Thuja occidentalis</em> leaves in distilled water and subsequently filtering the solution. The extract, abundant in phytochemicals such as flavonoids, tannins, and terpenoids, served as both a reducing and stabilizing agent in the precipitation-based synthesis of Yb doped ferrite nanoparticles. The molar ratios of the metals were maintained to achieve desired doping levels and NaOH was added to induce precipitation, which was then calcined to produce ferrite nanoparticles. The photocatalytic and antioxidant activities of the synthesized nanoparticles were evaluated using methylene blue (MB) dye degradation under visible light and DPPH radical scavenging assays, respectively. Characterization techniques, including XRD, FTIR, UV-Vis spectroscopy, XPS, SEM-EDS, TEM and VSM spectroscopy, confirmed the successful synthesis, structural integrity, functional and magnetic properties of the nanoparticles. The results revealed that Yb doped CuFe₂O₄ ferrites exhibited superior photocatalytic and antioxidant activities compared to the other ferrite nanoparticles, making them promising candidates for environmental and health-related applications.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"44 ","pages":"Article 101554"},"PeriodicalIF":5.45,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Using amber poly(ethylene terephthalate) waste to obtain carbon microneedles","authors":"L.C. Chagüendo-Figueroa ,&nbsp;D.F. Coral ,&nbsp;G. Bolaños-Pantoja ,&nbsp;J.E. Diosa ,&nbsp;E. Mosquera-Vargas ,&nbsp;J.E. Rodríguez-Páez","doi":"10.1016/j.nanoso.2025.101557","DOIUrl":"10.1016/j.nanoso.2025.101557","url":null,"abstract":"<div><div>A plastic waste, amber poly(ethylene terephthalate) (PET), was used to obtain carbon microneedles, using iron oxide microparticles (IOMPs) that acted as nucleation points to favor the growth of the carbon structure. The IOMPs were synthesized using the precipitation method, in atmospheres of air and of nitrogen and characterized via X-ray diffraction (XRD), IR and EDAX spectroscopy, as well as scanning electron microscopy (SEM). The synthesized particles showed magnetite (Fe₃O₄) as their main crystalline phase, a submicron size and a morphology that varied depending on the atmosphere used: spheroidal and laminar, in air, and spherical, on using nitrogen. The amber PET was then placed on quartz substrates previously impregnated with IOMPs, to be subjected to a pyrolysis process at 700 °C. These carbon-based structures were found to have an acicular morphology, with a submicron width, and length in the micron range. These showed an elemental chemical composition of ∼ 95 % (wt%) C, ∼ 2.6 % (wt%) O, ∼ 2.4 % (wt%) Si and ∼ 0.4 % Fe, on average.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"44 ","pages":"Article 101557"},"PeriodicalIF":5.45,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficient Ce-doped MgO@Ag core-shell catalyst for green synthesis of 1,2,4,5-tetrasubstituted imidazoles","authors":"Hrishikesh S. Labhade ,&nbsp;Jaidip B. Wable ,&nbsp;Dilip N. Ghule ,&nbsp;Amol H. Kategaonkar ,&nbsp;Samin S. Shaikh ,&nbsp;Sharad S. Gaikwad","doi":"10.1016/j.nanoso.2025.101546","DOIUrl":"10.1016/j.nanoso.2025.101546","url":null,"abstract":"<div><div>The advancement of green and efficient synthetic strategies is essential for the pursuit of environmentally sustainable organic transformations. Imidazole derivatives, recognized for their broad pharmacological and synthetic utility, are key structural motifs in various bioactive molecules. This study reports a one-pot, four-component synthesis of imidazole derivatives catalyzed by cerium-doped, silver-coated MgO (Ce-MgO@Ag) core-shell nanoparticles under solvent-free grinding conditions. The catalyst is synthesized via a sol-gel method and comprehensively characterized using XRD, FTIR, Ads-Des, BET, BJH, EDAX, FESEM, HRTEM, SAED, and XPS techniques. The model reaction employs an aromatic aldehyde, benzil, aniline, and ammonium acetate. Optimization of reaction conditions yields high-purity products with excellent efficiency. The synthesized imidazoles are characterized using FTIR, ¹H NMR, ¹³C NMR, and MS. Compared to conventional protocols, this nanocatalyst offers advantages such as high catalytic efficiency, superior yields, short reaction duration, inexpensive nature, operational simplicity, reusability, and environmental benignity. The findings underscore the potential of nanostructured catalysts in advancing green synthetic strategies.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"44 ","pages":"Article 101546"},"PeriodicalIF":5.45,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of diverse nanoparticles co-introduction on superconducting traits of YBa2Cu3O7-d ceramics: A comparative analysis","authors":"Ghadeer M. Alharbi ,&nbsp;Yassine Slimani ,&nbsp;Munirah A. Almessiere ,&nbsp;Najla S. Al-Shameri ,&nbsp;Anwar Al-Hamid ,&nbsp;Faten Ben Azzouz","doi":"10.1016/j.nanoso.2025.101552","DOIUrl":"10.1016/j.nanoso.2025.101552","url":null,"abstract":"<div><div>Investigating the impact of co-introducing two distinct types of nanoparticles (NPs) with specific characteristics into high-temperature YBa₂Cu₃O_7-d (Y123) superconductor ceramics is an engaging area of research. In this work, we used Ag and PbO NPs as the primary additives, while Al₂O₃, Dy₂O₃, SiO₂, and WO₃ NPs served as secondary additives. Two separate sample sets (identified as Ag-sample set and PbO-sample set) were produced via solid-state thermal sintering to comparatively evaluate the effectiveness of this dual-additive approach on the superconductivity of Y123 ceramics. Samples were subjected to comprehensive structural characterizations using X-ray diffraction (XRD) and scanning electron microscopy (SEM), and transport characterization using PPMS (Physical Property Measurement System) to measure resistivity-temperature (<em>ρ-T</em>), a.c susceptibility (<em>χ-T</em>), and d.c magnetization (<em>M-H</em>). The co-introduction of NPs was found to have a positive impact on the superconductivity and pinning capabilities of Y123. Well-oxygenated orthorhombic superconducting materials with onset critical temperature (<span><math><msubsup><mrow><mi>T</mi></mrow><mrow><mi>c</mi></mrow><mrow><mi>on</mi></mrow></msubsup></math></span>) of around 93.2 K were successfully produced. Importantly, the presence of PbO-NPs with specific other NPs (like SiO₂ and WO₃) proved to be more effective than the presence of Ag-NPs in enhancing critical current density (<em>J</em>_<em>c</em>) and pinning energy. Notably, the PbO-WO₃ sample exhibited the highest value of <em>J</em>_<em>c</em> = 6000 A/cm². Ag-NPs demonstrated their great effectiveness in upgrading the assemblage of grains and reinforcing their connectivity. The incorporation of both PbO and Ag with secondary oxide NPs created better pinning configurations, increasing, for instan_<em>c</em>e, the <em>J</em>_<em>c</em> value by more than a factor of 5 for an applied field up to 1 Tesla for the PbO-WO₃ sample in comparison to the non-added control sample. These findings have the potential to contribute to the advancement of second-generation high-temperature superconductor technologies.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"44 ","pages":"Article 101552"},"PeriodicalIF":5.45,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145119615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Review of interface evolution and joint performance in ultrasonic vibration-assisted friction stir welding of aluminum with dissimilar alloys","authors":"Najib Ahmad Muhammad ,&nbsp;Tarang Shinde ,&nbsp;Prince Sharma","doi":"10.1016/j.nanoso.2025.101541","DOIUrl":"10.1016/j.nanoso.2025.101541","url":null,"abstract":"<div><div>Friction stir welding (FSW) continues to rise among the solid state joining and welding processes due to its plentiful benefits. However, it has been met with drawbacks in joining dissimilar metals/materials for application in the transportation industries, other than their initial intended application for welding aluminum alloys. The present article discusses one of the more remarkable efforts employed to control or mitigate the persistent drawbacks, i.e., ultrasonic vibration-assisted FSW, to the various dissimilar material combinations, comprising aluminum alloys with copper, steel, titanium, and magnesium alloys, as this process has a significant effect on the joint formation and strength. The broader discussions on the effects of the ultrasonic vibration presence on the surface appearance, microstructural features, materials flow, and mechanical properties of these dissimilar materials will be revealed to understand the modification caused by the assisted energy on excellent weldability and joint performance. Given the increasing interest in advanced joining techniques for lightweight and radiation-resistant structures, this review also considers the potential relevance of such dissimilar joints in nuclear applications, particularly where aluminum-based systems interface with structural or shielding components.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"44 ","pages":"Article 101541"},"PeriodicalIF":5.45,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}