Applied Water Science最新文献

{"title":"Monitoring the impacts of illegal mining in the Camaná-Majes basin: hydrochemical and benthic macroinvertebrate assessment","authors":"Naysha Yamelit Meza Elguera,&nbsp;Abdel Alejandro Portocarrero Banda,&nbsp;Stephanie Elena Sosa Pulcha,&nbsp;Vitor de Cinque Almeida,&nbsp;Hugo Guillermo Jiménez Pacheco","doi":"10.1007/s13201-025-02537-8","DOIUrl":"10.1007/s13201-025-02537-8","url":null,"abstract":"<div><p>Water resources are crucial for development, sustainability, and productive activities. Water quality is influenced by natural processes and human activities, affecting river ecosystems. Hydrogeochemical studies aid in understanding water chemistry, detecting contaminants, and assessing surface water quality. The Camaná-Majes river basin, located in the Arequipa region of southern Peru (on the southwestern flank of the Andes), is affected by contamination from intensive mining, excessive chemical fertilizer and pesticide use, untreated wastewater, and informal landfills. This study evaluates the anthropogenic impacts on riparian areas and offers a monitoring tool for illegal mining deposits. Physicochemical parameters (pH, total dissolved solids, dissolved oxygen, salinity, conductivity), cations (Na + &gt; Ca + &gt; Mg + &gt; K + &gt; Li + in 2022; Ca + &gt; Mg + &gt; K + &gt; Na + &gt; Li + in 2023), anions (SO₄²– &gt; Cl– &gt; NO₃- &gt; F- for both years), carbonates (determined through ion chromatography), and heavy metals (Al &gt; Zn &gt; Cu &gt; Ba &gt; V &gt; Mn &gt; Ag &gt; Pb &gt; Se &gt; Ni &gt; Cr &gt; Co &gt; Hg in 2022; Al &gt; Mn &gt; Ba &gt; Cu &gt; Zn &gt; Pb &gt; V &gt; As &gt; Ni &gt; Co &gt; Cr &gt; Mo &gt; Hg in 2023) were analyzed using Inductively Coupled Plasma Mass Spectrometry. This study provides the first report on the benthic macroinvertebrate structure in the Camaná-Majes basin, assessed during the dry season of 2022 and the wet season of 2023. The 2023 evaluations of the Camaná-Majes river basin revealed significant contamination and biological vulnerability linked to illegal mining and other anthropogenic activities. Water quality assessments compared to Environmental Quality Standards, U.S. Environmental Protection Agency, and World Health Organization guidelines, along with biodiversity indices and principal component analyses, indicated heavy metal levels exceeding permissible limits, alterations in ionic composition, and a marked decline in macroinvertebrate biodiversity. These findings underscore a significant decline in water quality and ecosystem health from 2022 to 2023, driven by intensified mining activities.</p></div>","PeriodicalId":8374,"journal":{"name":"Applied Water Science","volume":"15 8","pages":""},"PeriodicalIF":5.7,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13201-025-02537-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145142912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In silico design and simulation of graphene oxide-based metal–organic framework nanomaterial for water purification","authors":"Mahnaz Shahabi,&nbsp;Ali Ahmadpour,&nbsp;Heidar Raissi","doi":"10.1007/s13201-025-02566-3","DOIUrl":"10.1007/s13201-025-02566-3","url":null,"abstract":"<div><p>The widespread presence of microplastics (MPs) in water has become an environmental concern due to their adverse effects on human health and aquatic ecosystems. To address this issue, metal–organic framework/graphene oxide composites have recently emerged as a promising solution for wastewater treatment due to their unique properties such as high loading capacity and enhanced stability. In this research, the uptake mechanisms of two types of MPs, including Polyamide 66 (PA66) and Polyurethane (PU) based on the metal–organic framework Cu-BTC/graphene oxide (Cu-BTC/GO) composite, are evaluated by molecular dynamics (MD) simulation. By increasing the number of adsorption sites through the incorporation of GO onto Cu-BTC, the designed composite demonstrates higher efficiency in removing MPs compared to the pristine MOF. The removal percentage of PA66 and PU increases from 25% and 0.75% in the MP-single Cu-BTC systems to 100% upon adsorption in the Cu-BTC/GO composite, respectively. The adsorption capacity of Cu-BTC/GO composite for MPs is enhanced through <i>π</i>–<i>π</i> stacking, C–H⋯<i> π</i> interactions, hydrogen-bonding network, and electrostatic attractions, with a predominant hydrophobic nature. Furthermore, the results of density functional theory (DFT) calculations confirm the findings from the MD study. This research provides detailed atomistic insights into the mechanisms of microplastics removal by the metal–organic framework composite with graphene oxide from wastewater.</p></div>","PeriodicalId":8374,"journal":{"name":"Applied Water Science","volume":"15 8","pages":""},"PeriodicalIF":5.7,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13201-025-02566-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145143019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A health index for surface water resources during drought: an automated fuzzy-based performance criteria approach","authors":"Mohammad Mahdi Dorafshan,&nbsp;Mohammad Hossein Golmohammadi,&nbsp;Carlo De Michele","doi":"10.1007/s13201-025-02543-w","DOIUrl":"10.1007/s13201-025-02543-w","url":null,"abstract":"<div><p>A new framework has been developed to assess the health of surface water resources in a basin, integrating a modified Multivariate Standardized Runoff Index with the concepts of reliability, resiliency, and vulnerability, using both traditional (fixed) and fuzzy approaches. This framework has been applied to the upstream sub-basin of the Zayandehrud Dam, Isfahan, Iran, for both the historical period (1990–2018) and future projections (2025–2053) under three emission scenarios: SSP1-2.6, SSP2-4.5, and SSP5-8.5. Also, a method was developed to automatic regulation of parameters the fuzzy membership function based on the real drought conditions of the basin. The main results revealed that (1) superior performance of the automated fuzzy approach in identifying drought intensity, making it more effective than the fixed approach in quantifying the health of the basin’s surface water resources under drought conditions; (2) the number of drought events and the mean drought intensity will be higher in the future periods than those in the historical one; (3) In the fixed approach, reliability, resiliency, and vulnerability values were estimated to be lower for the historical period than for the future period. Conversely, in the fuzzy approach, reliability and vulnerability values were comparable across both historical and future periods, while resiliency was estimated to be higher in the future period; and (4) classification of the basin’s health under drought conditions as \"unhealthy\" using the fixed approach for historical and future periods, compared to \"moderate healthy\" classification using the automated fuzzy approach for both periods.</p></div>","PeriodicalId":8374,"journal":{"name":"Applied Water Science","volume":"15 8","pages":""},"PeriodicalIF":5.7,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13201-025-02543-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145142888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Water use strategies of sparse vegetation in the desertification area determine the future trends of afforestation","authors":"Lili Feng,&nbsp;Weihua Liu,&nbsp;Anzhou Zhao","doi":"10.1007/s13201-025-02557-4","DOIUrl":"10.1007/s13201-025-02557-4","url":null,"abstract":"<div><p>Water use strategies of sparse vegetation are significant for understanding carbon water cycle processes in the desertification area. Afforestation is controversial in terms of the vegetation growth and water consumption trade-offs. Here we explored the acquisition of sparse vegetation, water use efficiency and its drivers, and water use strategies by combining multi-source data. The results show that sparse vegetation mainly uses soil moisture in northern China. Afforestation is sustainable that the vegetation changes are obviously driven by natural factors such as the precipitation, temperature and evapotranspiration. Otherwise, it is unsustainable that the vegetation changes are driven by many complicated factors. By further analysis, the vegetation height and topography can also affect the water use strategies. The sparse vegetation in the desertification is mainly dominated by the low shrubs and shrub-like trees (an average height of 5–10 m). As the trees grow, the proportion of groundwater utilization has increased. Once the tree height is above 20 m, groundwater is the dominant water use source. Once the altitude is above 3500 m, groundwater is the dominant water use source. So it is significant to choose the right tree for the right place. The result of this study can provide theoretical references for afforestation mode and subsequent management.</p></div>","PeriodicalId":8374,"journal":{"name":"Applied Water Science","volume":"15 8","pages":""},"PeriodicalIF":5.7,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13201-025-02557-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145142889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydrogel-activated hydrochar synergy for efficient wastewater purification: tackling imidacloprid pesticides and crystal violet dye","authors":"Mohamed A. Hassan,&nbsp;Mona T. Al-Shemy,&nbsp;Kholod H. Kamal,&nbsp;Beata Strachota,&nbsp;Adam Strachota,&nbsp;Ewa Pavlova,&nbsp;Magdalena Konefał,&nbsp;Samir Kamel","doi":"10.1007/s13201-025-02553-8","DOIUrl":"10.1007/s13201-025-02553-8","url":null,"abstract":"<div><p>With the growing global water crisis, wastewater reuse is increasingly essential, particularly in applications where treated water is safe for reuse. This study presents a sustainable hydrogel adsorbent, CMC-g-poly(AA-co-AM)/AHC, synthesized from carboxymethyl cellulose (CMC), activated hydrochar (AHC), acrylic acid (AA), and acrylamide (AM), for the removal of crystal violet (CV) dye and imidacloprid (Imida) pesticide. The microwave-assisted synthesis of AHC nanoparticles from bagasse offers dual benefits: reducing waste via agricultural byproduct valorization and enabling cost-effective water purification. The study evaluates the hydrogel’s chemical, physical, thermal, and rheological properties, as well as its adsorption efficiency under varying conditions, including pH, sorbent dose, salinity, ionic interference, temperature and contact time, supported by kinetic and isotherm modeling. The H10 hydrogel, incorporating 10.0% AHC, exhibited superior physical and rheological properties, achieving 94.0% removal efficiency for CV and 81.0% for Imida, with Langmuir-modeled maximum adsorption capacities of 312.5 mg/g for CV and 270 mg/g for Imida. Sorption–desorption experiments revealed enhanced reusability, with CV efficiency increasing from 93.8 to 97% and Imida from 88.0 to 91.6% after regeneration. Temperature effects demonstrated improved adsorption rates at higher temperatures (25 °C–40 °C), while ionic interference significantly impacted Imida adsorption. These findings reinforce the hydrogel’s potential for sustainable wastewater treatment, highlighting its reusability, efficiency, and adaptability for real-world applications.</p></div>","PeriodicalId":8374,"journal":{"name":"Applied Water Science","volume":"15 8","pages":""},"PeriodicalIF":5.7,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13201-025-02553-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145142896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Groundwater potential and quality assessment of the Oti Pendjari and Obosum Groups of the Atebubu municipality","authors":"Alfred K. Bienibuor,&nbsp;Kwasi Preko,&nbsp;Akwasi A. Aning,&nbsp;Aboagye Menyeh,&nbsp;David D. Wemegah,&nbsp;Michael K. Appiah","doi":"10.1007/s13201-025-02465-7","DOIUrl":"10.1007/s13201-025-02465-7","url":null,"abstract":"<div><p>This research was conducted to assess the possibilities of siting sustainable aquifers for borehole drilling and to assess the quality of water in hand-dug wells and existing boreholes in the Oti Pendjari and Obosum Groups of the Atebubu municipality. Groundwater is the main source of water to the people of Atebubu, but access and sustainability has been a major challenge over the years, owing to its complex underlying rocks. Groundwater occurrence and exploitation in the Voltaian has been reported by many researchers to be poor. In this research, the induced polarization (IP) method has been employed to delineate locations of high groundwater potential in the Atebubu municipality and to assess the quality of groundwater used by inhabitants of the area. The IP data was processed using the RES2DINV. version 4.9.18 Inversion and Modelling software, while the groundwater samples were analysed with the SPSS for Windows, version 22.0. The results revealed moderately to extremely fractured rocks with high possibility of water contents at greater depths, where rocks such as sandstone, pebbly beds and limestone are expected to exist. The low groundwater potential zones are likely to be covered by rocks such as mudstone or shale. A minimum drilling depth of 120 m is generally recommended for the municipality. The water quality analysis results also revealed that the water the people of the municipality drink is of high quality as all physicochemical parameters and heavy metals tested for were well within the World Health Organization’s (WHO’s) standards for drinking water.</p></div>","PeriodicalId":8374,"journal":{"name":"Applied Water Science","volume":"15 8","pages":""},"PeriodicalIF":5.7,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13201-025-02465-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145142887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Predicting integrated effects of subsurface drainage and climate change on water balance and nitrate losses","authors":"Samira Ziaeifar,&nbsp;Ali Shahidi,&nbsp;Amir-Ashkan Malakshahi,&nbsp;Abdullah Darzi-Naftchali,&nbsp;Mehdi Nadi","doi":"10.1007/s13201-025-02561-8","DOIUrl":"10.1007/s13201-025-02561-8","url":null,"abstract":"<div><p>To ensure the continued contribution of agriculture to global food security, food production systems must adapt to the challenges posed by environmental degradation and climate change. This study assesses the potential impacts of climate change on drainage systems, water balance, and nitrate loss in the consolidated paddy fields of a humid region. Using climate projections downscaled from earth system models (NorESM2 and CanESM5) under two shared socioeconomic pathways (SSP126 and SSP585), we analyzed expected changes in temperature, precipitation, and evapotranspiration (ET) over three canola growing seasons. The DRAINMOD model, calibrated for local conditions, was used to simulate water balance and nitrate losses for two subsurface drainage systems with a drain depth (D) of 0.65 m and spacings (L) of 15 m and 30 m (D0.65L15 and D0.65L30). Results showed a projected increase in minimum and maximum temperatures by 0.66 °C and 1.0 °C, respectively, under SSP126, and by 0.74 °C and 1.5 °C under SSP585, compared to the baseline period. ET is expected to increase by 7.3% under SSP126 and 8.1% under SSP585, resulting in total ET of 312.6 mm and 334.3 mm, respectively, compared to 306.4 mm in the base period. Precipitation during the growing season is projected to increase by 181.3 mm under SSP126, but decrease by 15.7 mm under SSP585, leading to shifts in drainage intensity. Nitrate losses under the climate change scenarios are expected to decrease slightly, with total losses in the D0.65L15 system dropping from 9.13 kg ha⁻¹ in the baseline period to 7.15 kg ha⁻¹ under SSP585. These findings highlight the need for optimizing drainage design to manage increased ET and varying precipitation patterns, ensuring environmental sustainability in the face of climate change.</p></div>","PeriodicalId":8374,"journal":{"name":"Applied Water Science","volume":"15 8","pages":""},"PeriodicalIF":5.7,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13201-025-02561-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145142890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Highly efficient Al(OH)3/HAp composite adsorbent for the removal of fluoride from drinking water: batch and column studies","authors":"Opoka William,&nbsp;Beteley Tekola Meshesha,&nbsp;Muhajir Mussa,&nbsp;Getachew Dagnew Gebreeyessus,&nbsp;Feleke Zewge","doi":"10.1007/s13201-025-02467-5","DOIUrl":"10.1007/s13201-025-02467-5","url":null,"abstract":"<div><p>Excess fluoride in water is a significant public health concern, causing illnesses such as arthritis, dental fluorosis and skeletal fluorosis. Hydroxyapatite (Ca₁₀(PO₄)₆(OH)₂) has shown a promise in fluoride removal through demineralization during which fluoride ions are effectively replaced by hydroxide ions (OH⁻). However, performance issues with applying hydroxyapatite (HAp) remain a challenge. This study assessed the efficacy of aluminum hydroxide/hydroxyapatite (Al(OH)₃/HAp) composite for fluoride removal from drinking water through batch and column experiments. The composite’s functional groups, crystalline phases, surface area, and the point of zero charge (pzc) were characterized, and its performance was evaluated in both batch and continuous experiments. During batch experiments, a 30% Al (OH)₃/HAp ratio exhibited an adsorption capacity of 2.30 mg/g with a fluoride removal efficiency of 92.02%. Kinetic analysis indicated that fluoride adsorption followed a pseudo-second-order model, suggesting chemisorption, while the Redlich–Peterson isotherm confirmed heterogeneous adsorption behavior. Among the tested competing anions, the presence of carbonate ions had the most adverse impact on fluoride removal efficiency. Column experiments using simulated water containing fluoride, bicarbonate and carbonates further demonstrated that an adsorption capacity of 1.28 mg/g was obtained at 15 mL/min flow rate, 10 cm bed depth, and 10 mg/L initial fluoride concentration, with the Clark model best describing the breakthrough data. Breakthrough time decreased with increasing flow rate and initial fluoride concentration but improved with greater bed depth. This study revealed Al(OH)₃/HAp as a cost-effective, efficient adsorbent for fluoride removal, addressing critical challenges in water treatment and providing insights into the adsorption behavior and mechanism of Al(OH)₃/HAp composite for fluoride removal.</p></div>","PeriodicalId":8374,"journal":{"name":"Applied Water Science","volume":"15 8","pages":""},"PeriodicalIF":5.7,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13201-025-02467-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145142465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Convenient synthesis of metal organic framework nanocomposites MOF:Fe(II)-CMC for effective adsorption to treat water samples from cationic pollutants dyes","authors":"Heba E. Saad,&nbsp;Yusif S. El-Sayed,&nbsp;Mohamed A. Hashem,&nbsp;Gaber M. Abu El-Reash,&nbsp;Mohamed Gaber","doi":"10.1007/s13201-025-02544-9","DOIUrl":"10.1007/s13201-025-02544-9","url":null,"abstract":"<div><p>The simple synthesis of an iron-based metal–organic framework nanocomposites (MOF:Fe(II)-CMC) has been successfully performed. The distinctive characteristics of the MOF nanocomposites were analyzed using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) for morphology visualization, Fourier-transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), energy-dispersive X-ray spectroscopy (EDX), Brunauer–Emmett–Teller (BET) surface area analysis, and zeta potential measurements. The adsorptive potential was established utilizing the cationic dyes (methylene blue, MB), crystal violet (CV), and malachite green (MG) water pollutants. The synthesized MOF:Fe(II)-CMC nanocomposites owned a crystalline microporous–mesoporous structure with a large surface area. The equilibrium data best conformed to the Langmuir isotherm model with correlation coefficient (<i>R</i>² &gt; 0.994) and pseudo-second-order kinetic model, with the maximum adsorption capacity for MB, CV, and MG being 166.66 mg/g at pH 5, 188.67 mg/g at pH 7, and 175.43 mg/g at pH 4, correspondingly at room temperature with an equilibrium concentration of 0.1 mg/ml. Thermodynamic analysis displayed the good energetics (∆<i>G</i> and ∆<i>S</i> &lt; 0) and exothermic nature (∆<i>H</i> &lt; 0) of the adsorption process. Negligible degradation of the adsorptive performance was noted under high ionic strength solutions and simulated water samples. MOF:Fe(II)-CMC exhibited great regenerative potential by ethanol stripping for at least 5 regeneration cycles with an adsorption capacity not less than 90%. The current findings give significant insights into the eco-friendly synthesis process of MOF:Fe(II)-CMC, with great upscaling prospects for the successful treatment of water pollutants, especially in high-strength water samples with complex water matrices.</p></div>","PeriodicalId":8374,"journal":{"name":"Applied Water Science","volume":"15 8","pages":""},"PeriodicalIF":5.7,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13201-025-02544-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145142425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sol–gel auto-combustion synthesis of a novel ternary magnetic-recyclable ZnFe2O4/ZnO/CeO2 nano-photocatalyst for highly efficient visible-light-induced degradation of organic contaminants","authors":"Saba Roostaei,&nbsp;Hanieh Ansarinejad,&nbsp;Elmuez A. Dawi,&nbsp;Forat H. Alsultany,&nbsp;Salman Khalaf Issa,&nbsp;Mina Ahmadi-Kashani,&nbsp;Masoud Salavati-Niasari","doi":"10.1007/s13201-025-02549-4","DOIUrl":"10.1007/s13201-025-02549-4","url":null,"abstract":"<div><p>The creation and design of highly efficient photocatalysts responsive to visible light are critically required to address pressing environmental challenges. The present work focuses on the design and controlled synthesis of a novel magnetically separable ternary nano-photocatalyst comprising ZnFe₂O₄, ZnO, and CeO₂ through a facile one-step sol–gel auto-combustion method. This ternary photocatalyst integrates the magnetic characteristics of ZnFe₂O₄, the durability and catalytic efficiency of ZnO, along with the oxygen storage capabilities and photocatalytic features of CeO₂. Besides, the sol–gel auto-combustion process serves as a self-sustaining technique for generating heat through its exothermic reactions, providing several advantageous characteristics such as uniformity, reduced particle size, improved distribution, and controlled morphology. The effects of different fuel agents on the phase purity and crystallite dimensions of ZnFe₂O₄/ZnO/CeO₂ were assessed. According to the FESEM images, the sample synthesized using oxalic acid as fuel revealed a porous structure with a particle size distribution near 18.97 nm, making it an outstanding choice for photocatalytic performance. The study revealed that the ZnFe₂O₄/ZnO/CeO₂ photocatalysts exhibited exceptional catalytic performance under neutral conditions, providing a significant advantage in photocatalytic activity. The photoactive properties of the ternary nanocomposite were tested by measuring the degradation of Erythrosine (ER) and Methyl Violet (MV) under visible light conditions. The findings revealed that the anionic dye is broken down significantly more effectively than the cationic dye. The photocatalyst exhibited impressive photocatalytic capabilities, achieving a degradation efficiency of 92.33% for ER. The combination of ZnFe₂O₄, ZnO, and CeO₂ enhances photocatalytic performance because of their synergistic features, substantial surface area, increased active sites, optimized charge dynamics, and potential for reuse. Notably, scavenger analysis revealed that hydroxyl radicals were significantly present in the ZnFe₂O₄/ZnO/CeO₂ sample when exposed to visible light, functioning as the main oxygen-derived radicals in breaking down pollutants through photocatalysis. Furthermore, insights into the photocatalytic reaction mechanism and the •OH generation process on the ternary photocatalyst were provided. The study comprehensively examined reaction kinetics, the durability of catalysts, and the impact of different variables like initial concentration of the dye solution and photocatalyst dosage during photocatalytic activity. Research results suggest that the pseudo-first-order kinetic model best describes the adsorption behavior of dyes on photocatalysts.</p></div>","PeriodicalId":8374,"journal":{"name":"Applied Water Science","volume":"15 8","pages":""},"PeriodicalIF":5.7,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13201-025-02549-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145142431","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}