Energy nexus最新文献

{"title":"Optimized solar conversion achieved with double halide X2NaIrCl6 (X = Rb, Cs) perovskites for optoelectronic and photovoltaic applications","authors":"Md. Shahazan Parves ,&nbsp;Md. Abu Bakkar Siddique ,&nbsp;Md. Tarekuzzaman ,&nbsp;Nazmul Shahadath ,&nbsp;Sohail Ahmad ,&nbsp;Md. Rasheduzzaman ,&nbsp;M. Moazzam Hossen ,&nbsp;Yasir Arafat ,&nbsp;Md. Zahid Hasan","doi":"10.1016/j.nexus.2025.100549","DOIUrl":"10.1016/j.nexus.2025.100549","url":null,"abstract":"<div><div>Considering the environmental concerns of lead Hazardousness and durability concerns in lead-based perovskite solar cells (PSCs), lead-free alternatives like X₂NaIrCl₆ (X = Rb, Cs) have gained significant attention. This investigation carries out an analysis of the structural and optoelectronic behaviour of X₂NaIrCl₆ (X = Rb, Cs) using DFT to assess its potential for absorber material for solar cells (SCs). Structural stability of X₂NaIrCl₆ (<em>X</em> = Rb, Cs) double perovskites was analysed using tolerance factors (<span><math><msub><mi>τ</mi><mn>1</mn></msub></math></span>, <em>μ</em>, <span><math><msub><mi>τ</mi><mn>2</mn></msub></math></span>), with dynamical stability ensured through phonon dispersion. Negative and binding energy (<span><math><msub><mi>E</mi><mi>b</mi></msub></math></span>) and formation energy (<span><math><msub><mi>E</mi><mi>f</mi></msub></math></span>) further validated their stability. Direct band gaps, determined utilizing the TB-mBJ (GGA-PBE) approach, the values were determined to be 2.02 eV (0.97 eV) for Rb₂NaIrCl₆ and 1.93 eV (0.92 eV) for Cs₂NaIrCl₆, placing them in the recommended range (0.8- 2.2 eV) for photoelectric conversion. X₂NaIrCl₆ (X = Rb, Cs) double perovskites exhibit remarkable potential for photovoltaic applications, driven by their high absorption coefficients (∼10⁴) and favourable optical properties, including low energy loss and minimal reflectivity (&lt;15 %). These attributes highlight their promise for high efficiency and low-cost materials for advanced optoelectronic and solar energy devices. SCAPS-1D software employed to identify the most efficient solar cell designs by incorporating various HTLs and ETLs. Among 40 tested configurations, the ITO/ZnO/Cs₂NaIrCl₆/Cu₂O structure attains the maximum PCE of ∼20.39 %, while ITO/ZnO/Rb₂NaIrCl₆/Cu₂O achieves ∼19.16 %. Additionally, the study examines the effects of varying ETL/absorber thicknesses and series and shunt resistances, and temperature on photovoltaic performance. A detailed investigation was conducted on the principal photovoltaic indicators, such as current-voltage characteristics, capacitance, quantum efficiency, Mott Schottky parameters, and the processes governing photocarrier generation and recombination. These findings highlight X₂NaIrCl₆ (X = Rb, Cs) as a suitable material for high-performance optoelectronic and photovoltaic real-world applications.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"20 ","pages":"Article 100549"},"PeriodicalIF":9.5,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145222641","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":"Economic viability of crop-specific solar irrigation designs under diverse agricultural management and grid-connected conditions: Insights from Qazvin Plain, Iran","authors":"Mohammad Reza Mirahmad,&nbsp;Atefeh Parvaresh Rizi","doi":"10.1016/j.nexus.2025.100550","DOIUrl":"10.1016/j.nexus.2025.100550","url":null,"abstract":"<div><div>The depletion of fossil fuels as the primary energy source and the associated environmental impacts contradicts sustainable development goals. A viable global solution involves harnessing renewable solar energy. With growing emphasis on pressurized irrigation systems in water-intensive agriculture and their significant energy demands, solar-powered irrigation has emerged as a promising alternative. However, financial viability remains a key challenge. This study examines solar irrigation systems tailored to the Qazvin Plain, Iran, focusing on fixed rain and strip sprinklers across three cultivated area scales for two crops—fodder corn and wheat—under single-season and double-season scenarios. Results highlight the critical role of crop type, cultivation scale, and irrigation methods in economic feasibility. Optimal system design prioritizing minimal energy use is essential, considering each agricultural plot's specific attributes. Notably, surplus electricity sales to the national grid could generate income 35–45 times the initial cost over 20 years for single-season plans and 31–38 times for double-season plans, with the initial investment recouped within six years. The net present value in all scenarios confirms the financial rationale for adopting solar irrigation systems, underscoring their potential to align agricultural practices with sustainability and economic efficiency.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"20 ","pages":"Article 100550"},"PeriodicalIF":9.5,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145223178","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":"Geopolitical shocks and carbon pricing: Do clean energy assets act as a hedge?","authors":"Anupam Dutta ,&nbsp;Sourav Mukharjee ,&nbsp;Gazi Salah Uddin","doi":"10.1016/j.nexus.2025.100538","DOIUrl":"10.1016/j.nexus.2025.100538","url":null,"abstract":"<div><div>While the interaction between geopolitical events and emission trading system (ETS) is somewhat complex, very little is known about how geopolitical shocks impact global carbon prices. In this study, we extend this scant literature by exploring the linkage between geopolitical risk (GPR) and the Chinese carbon markets. Given that geopolitical shocks may influence the Chinese ETS in several ways, such linkage merits an empirical investigation. Methodologically, we combine the Markov regime switching (MRS) model with the vector autoregressive (VAR) process and apply it to the Shenzhen and Hubei carbon markets. The results suggest that while the standard VAR model fails to capture any connection between geopolitical shocks and carbon returns, employing the MRS-VAR process reveals that GPR in fact exerts significant effects on the Chinese carbon markets implying that such effects appear to be regime-dependent. More specifically, the impact of geopolitical shocks is negative in the high volatility regime, but statistically insignificant in the low volatility regime. Further investigations show that higher geopolitical risk leads to higher hedging costs and that clean energy equities could be a suitable hedge for the Chinese carbon markets amid the periods of high geopolitical uncertainties. These outcomes have key implications which would be crucial for reaching the net-zero goals.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"20 ","pages":"Article 100538"},"PeriodicalIF":9.5,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145223213","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":"Biomass-derived porous carbon-supported MnWO4/CeVO4 nanocomposites: Influence of solvent and natural surfactant on morphology and electrochemical hydrogen storage performance","authors":"Farideh Sedighi,&nbsp;Maryam Ghiyasiyan-Arani,&nbsp;Mohsen Behpour","doi":"10.1016/j.nexus.2025.100548","DOIUrl":"10.1016/j.nexus.2025.100548","url":null,"abstract":"<div><div>This work introduces a new and green way to the hydrothermal synthesis of MnWO₄/CeVO₄ nanocomposites (NCs) in the presence of Ginseng extract as a natural surfactant. The nanocomposites were evaluated as novel candidates for electrochemical hydrogen storage using charge-discharge chronopotentiometry technique. Three different molar ratios of monoclinic MnWO₄ phase to tetragonal CeVO₄ phase (1:1, 2:1, and 4:1) were studied, among which the 4:1 composition showed superior storage capacity (672 mAhg⁻¹ at current of 1 mA after 15 cycles). The influence of different solvents such as ethanol and ethylene glycol on the morphology and performance was also examined. The sample synthesized in ethanol medium displayed a porous morphology and delivered a higher hydrogen storage capacity (845 mAhg⁻¹ at current of 1 mA after 15 cycles) compared to those prepared in other solvents. To enhance performance, the optimized MnWO₄/CeVO₄ nanostructures were further composited with biomass-derived porous carbon (PC) synthesized using green source of jujuba powder. The ternary composite containing 70 wt% porous carbon with BET surface area of 15.89 m²g⁻¹ exhibited the highest capacity, reaching up to 1100 mAhg⁻¹ at current of 1 mA after 15 cycles. All samples characterized in terms of phase purity, crystallite structure, chemical bonding, morphology, and surface area using XRD, FT-IR, EDS, SEM, TEM and BET-BJH analyses. These findings suggest that structure control through natural surfactants and solvent selection, coupled with carbon incorporation, can significantly boost hydrogen storage efficiency in transition metal-based nanocomposites.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"20 ","pages":"Article 100548"},"PeriodicalIF":9.5,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160157","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":"Harnessing agricultural waste and microbial synergy to improve soil function and fruit quality in ‘Amrapali’ mango","authors":"O P Meena ,&nbsp;V B Patel ,&nbsp;S K Singh ,&nbsp;Kanhaiya Singh ,&nbsp;Vishal B Mhetre ,&nbsp;Shiva Dhar ,&nbsp;M C Meena ,&nbsp;Seema Sanghwan ,&nbsp;Shalini Gaur Rudra ,&nbsp;Ram Asrey ,&nbsp;B R Vinod ,&nbsp;Swati Saha","doi":"10.1016/j.nexus.2025.100547","DOIUrl":"10.1016/j.nexus.2025.100547","url":null,"abstract":"<div><div>This study assessed the impact of various organic manures, alone and combined with microbial consortia, on soil health, tree growth, yield, and fruit quality in ‘Amrapali’ mango orchards. Among 12 treatments, vermicompost with microbial consortia (T8) significantly improved soil biochemical properties—including cation exchange capacity, enzymatic activity, and nutrient availability. T8-treated trees showed increased canopy volume, shoot length, and fruit yield, along with reduced malformed panicles. Enhanced leaf physiological and biochemical traits (photosynthesis, transpiration, proline, phenolics, and nutrient content) were also observed. Fruit quality improved under T8, with higher levels of ascorbic acid, flavonoids, carotenoids, sugars, and antioxidant activity. Correlation and PCA confirmed positive relationships among soil, leaf, and fruit parameters. Compost treatments using rice waste, neem, and mixed leaves performed comparably to synthetic fertilizers. These results highlight vermicompost-microbial integration as a sustainable strategy to enhance productivity and resource efficiency in mango cultivation, thereby supporting soil fertility and reducing dependence on synthetic inputs.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"20 ","pages":"Article 100547"},"PeriodicalIF":9.5,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145223212","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":"Advancements and integration strategies of solar water heaters in buildings: A comprehensive review","authors":"Walid Zaafouri ,&nbsp;Walid Ben Amara ,&nbsp;Abdallah Bouabidi ,&nbsp;Saif Ali Kadhim ,&nbsp;Ali Habeeb Askar","doi":"10.1016/j.nexus.2025.100535","DOIUrl":"10.1016/j.nexus.2025.100535","url":null,"abstract":"<div><div>The integration of renewable energy into buildings is a key strategy to reduce energy consumption and heating costs. This review comprehensively examines solar water heater (SWH) systems, focusing on their major components such as storage tanks, solar collectors (flat plate, evacuated tube, parabolic trough, and others), and heat transfer fluids. Two integration strategies are discussed: building-integrated systems (roof and façade applications) and standalone thermosiphon systems. Recent advancements in SWHs include the use of selective coatings, nanofluids, and phase change materials (PCMs), which significantly enhance thermal efficiency. Key factors influencing performance such as collector orientation, tilt angle, and thermal losses are analyzed. The review concludes with design optimization recommendations and integration strategies that support higher system efficiency and broader adoption in both residential and commercial applications.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"20 ","pages":"Article 100535"},"PeriodicalIF":9.5,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160154","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":"Hybrid deep learning models for water demand forecasting in greenhouses: Exploring the energy Nexus in Urban agriculture","authors":"Arash Moradzadeh ,&nbsp;Lazhar Ben-Brahim ,&nbsp;Ali Arefi ,&nbsp;Arman Oshnoei ,&nbsp;S.M. Muyeen","doi":"10.1016/j.nexus.2025.100546","DOIUrl":"10.1016/j.nexus.2025.100546","url":null,"abstract":"<div><div>Precise water demand forecasting (WDF) is crucial for sustainable irrigation and resource efficiency in urban greenhouse systems. This study introduces a cutting-edge hybrid deep learning approach designed for short-term WDF, while also considering the energy nexus between water, energy, and environmental factors. The model integrates the least squares generative adversarial network (LSGAN) for data pre-processing and noise reduction, convolutional neural networks (CNN) for feature selection, and bidirectional long short-term memory (BiLSTM) for time-series state modeling, and named as LSGAN<img>CBiLSTM. Using real-world data from the Wageningen Research Centre in Bleiswijk, Netherlands, the model significantly outperformed benchmark approaches, achieving an R-value of 99.57 % with minimal forecasting errors. The model demonstrated exceptional stability, minimal bias, and strong handling of environmental variability, improving short-term WDF accuracy, optimizing water management in urban agriculture, enhancing sustainable irrigation, and addressing the energy nexus for efficient resource use.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"20 ","pages":"Article 100546"},"PeriodicalIF":9.5,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145222643","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":"Coupling coordination and driving factors of the water-energy-food nexus in China: A sustainable development perspective","authors":"Zhili Lu,&nbsp;Shipeng Yang,&nbsp;Weiwei Chen,&nbsp;Lei Lu,&nbsp;Yunjiao Fan,&nbsp;Chaoyang Yue,&nbsp;Yan Shi","doi":"10.1016/j.nexus.2025.100545","DOIUrl":"10.1016/j.nexus.2025.100545","url":null,"abstract":"<div><div>Water, energy, and food (WEF) are crucial for human survival, making studying the WEF nexus in China vital for sustainable development. This work proposes an evaluation indicator system and analyzes the comprehensive evaluation level, coupling coordination degree (CCD), and spatiotemporal evolution using the comprehensive evaluation model and CCD model. A spatial autocorrelation model is used to examine the CCD across 30 regions of China. Additionally, the geographic spatio-temporal weighted model (GTWR) and geographical detector model are used to pinpoint the driving factors affecting the CCD of the WEF nexus. The results reveal a steady improvement in WEF nexus coordination nationwide, accompanied by significant regional disparities. While eastern provinces exhibit higher and earlier coordination levels, central regions show accelerated progress, and western provinces remain constrained by resource endowments. Moreover, the driving factors of CCD demonstrate pronounced spatial–temporal heterogeneity, with expenditure on R&amp;D funding, disposable income per capita, and GDP growth rate exerting varying influences across provinces and over time. Based on these results, recommendations are made to strengthen food production, promote clean energy development, and optimize water resource structures to enhance the WEF nexus across provinces in China.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"20 ","pages":"Article 100545"},"PeriodicalIF":9.5,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160153","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":"Tracer solubility, stability, and reactivity in ultramafic rocks: Enhancing CCS and mineralization monitoring efficiency","authors":"Hammad Tariq Janjuhah ,&nbsp;Sulaiman Al Mani ,&nbsp;Juerg M Matter","doi":"10.1016/j.nexus.2025.100539","DOIUrl":"10.1016/j.nexus.2025.100539","url":null,"abstract":"<div><div>Artificial tracers have been widely used in hydrogeology to identify groundwater flow pathways and to quantify mixing, and chemical and biological reaction processes. De- pending on the specific environment, tracers behave differently and can be subject to chemical interaction. This research investigated the adsorption characteristics of two common artificial tracers, fluorescein (FL) and Na-Naphthenate-Methylene Blue (Na-Napth-MB), dissolved in different types of water and on serpentinized peridotite rock under ambient conditions with emphasis on applications in carbon capture and storage (CCS) and CO₂ mineralization. Using the prepared 1 ppm fluorescein and 5 ppm Na- Naphthenate -MB solutions, investigations were carried out for their reactivity and stability in freshwater, sea- water, soda water, and serpentinized peridotite rock. The data indicate that lower concentration of FL promoted higher adsorption than in higher concentrations; this effect declined with higher concentration/dosage. Whereas Na-Napth-MB showed much higher adsorption even in high dosage concentrations. In addition, contrary to the assumption that such tracers would remain non-reactive with other rock types, it was observed that ultramafic rocks (e.g. serpentinized peridotite) were significantly adsorbing. When the adsorption of an in-situ condition is considered, it is rather assumed that the adsorption potential will be very high and might get even 10 times higher than the values determined in the laboratory. This indicates that there is a need for careful selection of appropriate artificial tracers, their concentrations, and their effective monitoring in subsurface applications such as CCS. This makes it necessary to consider alternative conservative tracers such as e.g. noble gases, perfluorocarbons or nanoparticles for CCS projects. The outcomes are important to im- prove the tracer-based monitoring techniques for ultramafic rocks to accomplish long-term tracking of CO₂ and mineralization.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"20 ","pages":"Article 100539"},"PeriodicalIF":9.5,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145223176","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":"Techno-economic analysis of a large-scale plant for the production of solid biofuel from cashew nut shells in Côte d'Ivoire","authors":"Boua Sidoine Kadjo ,&nbsp;Mohamed Koïta Sako ,&nbsp;Yao N’guessan ,&nbsp;Kouadio Alphonse Diango ,&nbsp;Amélie Danlos ,&nbsp;Christelle Perilhon","doi":"10.1016/j.nexus.2025.100540","DOIUrl":"10.1016/j.nexus.2025.100540","url":null,"abstract":"<div><div>The production of solid biofuels from cashew nut shells is an alternative solution for the management of these agro-industrial residues, while contributing to the development of new and renewable energy sources. The objective of this study is to analyse the technical and economic feasibility of an industrial-scale solid biofuel production unit of 8000 tonnes per year in Côte d'Ivoire over a period of 20 years. The investment cost is estimated at 2564 k€, fully financed by a 7-year bank loan. The average production cost per kg of solid biofuel is estimated at €0.17. The selling price is assumed to be €0.31, identical to the current selling price of charcoal. The annual net profit, net present value and internal rate of return are 2034 k€, 12,046 k€ and 33.2 % respectively. Taking into account an additional input from the sale of bio-oil as a by-product, the annual net profit, net present value and internal rate of return are 2162 k€, 13,523 k€ and 34.6 % respectively. The project is therefore economically viable. The economic viability of the project is highly dependent on the sales price of solid biofuels, the discount rate and the operating costs. The large-scale production of solid biofuels from agricultural and agro-industrial residues is a technically and economically viable alternative for the development of clean renewable energy in Côte d'Ivoire.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"20 ","pages":"Article 100540"},"PeriodicalIF":9.5,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160155","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}