Environmental Nanotechnology, Monitoring and Management最新文献

{"title":"Butachlor contamination in surface water and sediment: Assessing human health, ecological risks, and environmental implications of the Bontanga irrigation scheme in the Northern region of Ghana","authors":"Mohammed Alhassan,&nbsp;Gerheart Winfred Ashong,&nbsp;Boansi Adu Ababio,&nbsp;Edward Ebow Kwaansa–Ansah","doi":"10.1016/j.enmm.2025.101073","DOIUrl":"10.1016/j.enmm.2025.101073","url":null,"abstract":"<div><div>The Bontanga Irrigation Scheme in Ghana’s Kumbungu District, vital for local agriculture, faces significant ecological and health risks from Butachlor, an herbicide used in rice plantations. This study aimed to evaluate the physicochemical parameters of surface water, measure Butachlor concentrations in surface water and sediment, assess ecological risks, and estimate human health effects. A total of 100 water samples, 50 sediment samples were collected, and 50 farmers were interviewed about pesticide use. Physicochemical parameters such as pH, total dissolved solids, electrical conductivity, temperature, and turbidity were measured using standard analytical methods. Butachlor levels in surface water and sediment were determined using gas chromatography-mass spectrometry (GC–MS) and liquid chromatography-mass spectrometry (LC-MS). Results indicated that all physicochemical parameters in the water samples were within WHO limits. However, Butachlor concentrations ranged from 4.74 µg/L to 118.85 µg/L, exceeding the EFSA threshold of 0.5 µg/L, while sediment samples were below the detection limit of 0.01 mg/L. The toxic unit (TU) method revealed a medium acute risk to algae (0.28) and fish (0.13) and a low acute risk to aquatic invertebrates (0.02). The risk quotient (RQ) method indicated a high chronic risk to aquatic biota in surface water, though the non-carcinogenic health risk (HQ) to humans was minimal (HQ &lt; 1). Butachlor residues may pose significant health risks, including neurological, respiratory, and reproductive disorders. This study recommends implementing Integrated Pesticide Management policies, developing pest-resistant plant species, proper disposal of pesticide containers, and educating farmers on pesticide usage. Future research should focus on Butachlor’s long-term effects on aquatic biota, alternative pest control strategies, and measures to reduce residues, protecting both wildlife and human health.</div></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"23 ","pages":"Article 101073"},"PeriodicalIF":0.0,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143876503","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":"Performance by design of TiO2 nanostructured granules exploitable in water remediation applications","authors":"Maurizio Vespignani ,&nbsp;Ilaria Zanoni ,&nbsp;Simona Ortelli ,&nbsp;Magda Blosi ,&nbsp;Chiara Artusi ,&nbsp;Andreana Piancastelli ,&nbsp;Cesare Melandri ,&nbsp;Irini Furxhi ,&nbsp;Anna Luisa Costa","doi":"10.1016/j.enmm.2025.101071","DOIUrl":"10.1016/j.enmm.2025.101071","url":null,"abstract":"<div><div>The development of advanced materials through safe and sustainable methods has become a priority in the field of material science. This study addresses this need by exploring how different design options affect the performance of nano-TiO₂ granulated powders exploitable in water remediation applications. The high-shear wet granulation (HSWG) process parameters have been investigated to produce nanostructured powders that are easy to handle, disperse, and remove from liquids, while preserving their ability to adsorb and photodegrade water pollutants or encapsulate and stabilize active ingredients. We systematically examined a range of key variables, including liquid-to-solid ratio, granulation time, and impeller speed, which were identified as the primary factors affecting the size population. The percentage of the &gt; 1000 µm granules fraction reached 100 % by increasing the liquid-to-solid ratio up to 0.6 g_water/g_powder, while an increase in granulation time and impeller speed caused a reduction of the largest fraction by approximately 30 % and 20 %, respectively. Additionally, we investigated the addition of different binder agents, followed by calcination at 600 °C. We found a correlation between tapped density, open porosity, swelling ratio and compressive strength. Maltodextrin (MD) improved the degree of compaction resulting in the highest compressive strength (9.5 ± 0.2 MPa) and lowest release of titanium when redispersed in water, whilst micro acryl emulsion (MA) improved the sample porosity (80.6 ± 0.5 %) and its capacity to adsorb water (swelling ratio. The pro-oxidative potential of the granules was evaluated using an •OH radical sensitive probe. TiO₂-based granules showed a reactivity comparable to TiO₂ pristine nanopowders, consuming approximately 98 % of RNO after 4 h.</div></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"23 ","pages":"Article 101071"},"PeriodicalIF":0.0,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143870788","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":"Potentially toxic elements and geochemical signatures in sediments and soils from Biritiba-Mirim reservoir, Brazil","authors":"Pedro do Nascimento Gonçalves ,&nbsp;Sandra Regina Damatto ,&nbsp;Thiago Costa Silva ,&nbsp;Lúcio Leonardo ,&nbsp;Lucilena Rebelo Monteiro ,&nbsp;Marcos Antônio Scapin ,&nbsp;Marycel Elena Barboza Cotrim","doi":"10.1016/j.enmm.2025.101070","DOIUrl":"10.1016/j.enmm.2025.101070","url":null,"abstract":"<div><div>This study evaluated potentially toxic elements (PTEs) – V, Cr, Ni, Cu, Zn, Pb, As, Sb, and Co – in sediment cores and surface soils from the Biritiba-Mirim reservoir in Brazil. The study investigated the influence of nearby soil on the sediments in the reservoir, the accumulation of PTEs in the sediment core layers, and enrichment factors from anthropogenic or natural sources. The methodology focused on the geochemical and physico-chemical characteristics of soils and sediment. The results compose a database with regional interest in the environmental quality of a relevant water supply system for Brazil’s most populous city, as well as to international researchers studying the geochemistry of trace elements in dam reservoir environments. The mean PTEs concentrations, in mg/kg, found in soils and sediments, respectively, were V (116 | 214), Cr (32.7 | 52.8), Ni (7.9 | 13.9), Cu (58 | 65), Zn (61 | 57), Pb (69 | 74), As (5.6 | 25.7), Sb (0.39 | 0.90), and Co (1.97 | 3.40). The study hypothesized arsenic enrichment near sediment core transition zones, with positive correlations between As with Sediment Erosion Flux (SEF), indicating the impact of reservoir flooding on the sediment quality. Signatures of chemical correlation were found between reservoir sediments and catchment soils, which presented signs of copper and lead enhanced by anthropogenic release.</div></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"23 ","pages":"Article 101070"},"PeriodicalIF":0.0,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850206","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":"Monte Carlo simulation for human health risk assessment of groundwater contaminated with arsenic at an Iranian semi-arid region","authors":"Ali Mantashloo ,&nbsp;Reza Shokoohi ,&nbsp;Zahra Torkshavand ,&nbsp;Ebrahim Chavoshi ,&nbsp;Salman Khazaei ,&nbsp;Mohammad Khazaei ,&nbsp;Amir shabanloo","doi":"10.1016/j.enmm.2025.101069","DOIUrl":"10.1016/j.enmm.2025.101069","url":null,"abstract":"<div><div>The present study investigated the contamination of drinking water with arsenic and its human health risk assessment in Qorveh County, Kurdistan Province, Iran. The data of this study were collected and analyzed in the wet and dry seasons and from a total of 56 groundwater samples. This study used two deterministic and stochastic approaches to evaluate carcinogenic and non-carcinogenic risk. Monte Carlo simulation, which is based on the Markov chain approach, was used for risk assessment. The examination of heavy metals As, B, Cd, Cu, Hg, Mn, Ni, Pb, Sb, V, and Zn in the water samples reveals that except for the arsenic, the insignificant concentration of the abovementioned metals was found, consequently, the health risk studies were conducted focusing on the arsenic contamination. Data analysis revealed the average concentration of arsenic in the dry and wet seasons to be 14.93 ± 17.67 and 13.79 ± 16.57 μg/L, respectively. Furthermore, beyond 39 % and 35 % of the area of Qorveh County rely on groundwater sources having the arsenic contents more than the permissible level (10 µg/L) in dry and wet seasons, respectively. The Monte Carlo simulation output clearly showed that the HQ values ​​for the 95th percentile in the dry season were 3.58 and 2.03 for the age groups of children and adults, respectively. In other words, the non-carcinogenic risk for children is almost twice that of adults. All carcinogenic risk values was reported more than the acceptable threshold, typically set at 1 × 10⁻⁶ (or 1 in a million) by EPA. The sensitivity analysis of the contribution of arsenic concentration, duration of exposure, and rate of ingestion showed 89.5 %, 5.7 %, and 4.6 %, respectively, which indicates the major effect of arsenic concentration. The findings of this study provide an environmental alert to inform policy and attract appropriate financial resources for the management of drinking water sources containing arsenic in these areas.</div></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"23 ","pages":"Article 101069"},"PeriodicalIF":0.0,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143829398","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":"Nanoparticle based antigen detection of norovirus in human faecal samples: A proof-of-concept study","authors":"Rishi Pandey ,&nbsp;Pradip Gyawali ,&nbsp;Mark A.T. Blaskovich ,&nbsp;Sanjaya K.C.","doi":"10.1016/j.enmm.2025.101064","DOIUrl":"10.1016/j.enmm.2025.101064","url":null,"abstract":"<div><div>Immunocapture assays that are fast, affordable, and can be utilised as on-site sensors for detecting pathogens or their biomarkers hold great value for ensuring public health and food safety. As proof of concept, a magnetic immunocapture assay was developed to detect norovirus. Acommercially available monoclonal antibody capable of capturing both norovirus genogroup I and II (GI and GII) was conjugated to the magnetic nanoparticles (MNPs) for capture and sequestration of norovirus GI and GII under laboratory conditions. The capability of the functionalised MNPs to capture norovirus from the faecal extract was determined by reverse transcription-qPCR. The capture efficiency of MNPs was &gt;90 % for both genogroups of noroviruses. To complement the magnetic capture and enable rapid detection and genogroup identification, two different monoclonal antibodies specific to genogroups GI and GII were conjugated onto a fluorescent nanoparticle surface, and then used to quantify captured norovirus in a ‘sandwich’ assay. Replicate faecal extract suspensions containing 10³ gene copies of norovirus GI and GII per µL were tested with the magnetic capture-fluorescence detection assay platform, with quantification of fluorescent intensity. The fluorescent particle assay for the detection of the biomarkers matched the sensitivity of qPCR. This method doesn’t require any sample preparation steps like nucleic acid extraction and can be easily converted into a rapid point of need detection system. This dual nanoparticle system holds promise as an inexpensive and reliable analytical tool for classical qualitative immunoassays that are prone to false positives.</div></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"23 ","pages":"Article 101064"},"PeriodicalIF":0.0,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143852084","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":"Radioactivity in surface soil and water around the Valliyaru river","authors":"Vinod Kumar K.P. ,&nbsp;Kumar A. ,&nbsp;Karthik B.","doi":"10.1016/j.enmm.2025.101068","DOIUrl":"10.1016/j.enmm.2025.101068","url":null,"abstract":"<div><div>Gross alpha and beta radiations for the samples of soil and water collected from the Valliyaru river in southern India were determined. Alpha radiation counting system, RC 605A for measuring gross alpha values was employed that revealed a maximum value of 0.843 Bq/L and 12491 Bq/Kg in water and soil respectively. Beta counting system, BCS 36A had given a maximum value of 0.32 Bq/L and 58594 Bq/Kg for water and soil respectively. Gamma determination was detected by IdentiFINDER-X that showed a maximum value of 3.78 µSv/h. These high values pertaining to radiations were prevailing only at Kadiapattanam village in Tamil Nadu, India, where the river confluences with the sea. Cluster analysis and the hierarchical dendrogram identify two distinct groups of radioactivity within the dataset: one near the sea and the other along various sites along the course of the Valliyaru River. Heat map analysis revealed that radioactivity of water and soil are correlated positively. One-way Anova results reflected that the radioactivity values are statistically different for soil and water. Annual effective doses (AED) and excess lifetime cancer risk (ELCR) were also computed that reflected safe levels at sites other than Kadiapattanam. The investigation revealed that upstream sites are within safe limits, whereas at the place of confluence with the sea, radioactivity values exceed beyond permissible limits.</div></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"23 ","pages":"Article 101068"},"PeriodicalIF":0.0,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823995","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":"Micro-nanobubble assisted photocatalytic and antibacterial activity of ZnFe2O4/g-C3N4/rGO nanocomposite","authors":"Sutthida Wongwichian ,&nbsp;Ranjith Rajendran ,&nbsp;Orawan Rojviroon ,&nbsp;Priyadharsan Arumugam ,&nbsp;Sanya Sirivithayapakorn ,&nbsp;Thammasak Rojviroon","doi":"10.1016/j.enmm.2025.101065","DOIUrl":"10.1016/j.enmm.2025.101065","url":null,"abstract":"<div><div>Addressing the ongoing challenge of water pollution by synthetic dyes requires advanced approaches. This study examines the improved degradation of Indigo Carmine (IC) dye using a ternary nanocomposite made of ZnFe₂O₄, g-C₃N₄, and reduced graphene oxide (rGO), in combination with micro-nanobubble technology. The nanocomposite was synthesized using hydrothermal method, promoting effective interaction between ZnFe₂O₄, g-C₃N₄, and rGO, which enhances photocatalytic performance. The ZnFe₂O₄/g-C₃N₄/rGO nanocomposite (ZGR NCs) exhibited a 92 % degradation efficiency of IC dye within 60 min, significantly outperforming ZnFe₂O₄ (49 %), ZG (59 %), ZR (64 %), and ZGR without MNB (72 %). The photocatalytic process followed pseudo-first-order kinetics with a high correlation coefficient (R² ∼ 0.9789–0.9968), demonstrating the efficiency of charge separation and transfer facilitated by rGO. ZnFe₂O₄ excels in absorbing visible light, g-C₃N₄ serves as a capable photocatalyst with a suitable bandgap for visible light, and rGO further facilitates electron mobility, minimizing charge recombination. Also, the combination of ZnFe₂O₄, rGO, and g-C₃N₄ generates a synergistic effect that significantly boosts photocatalytic activity. This interaction leads to more effective production of reactive oxygen species, which are essential for degrading pollutants. The nanocomposite also exhibited excellent reusability, retaining 88 % of its initial efficiency after five cycles. Additionally, antibacterial studies revealed strong inhibition zones against <em>Streptococcus mutans</em> (18–22 mm) and <em>Enterococcus faecalis</em> (14–20 mm), attributed to ROS-induced bacterial membrane disruption. These findings highlight the multifunctionality of the ZGR nanocomposite-micro-nanobubble (MNBs) system, offering a promising approach for sustainable wastewater treatment and antibacterial applications.</div></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"23 ","pages":"Article 101065"},"PeriodicalIF":0.0,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143817312","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":"Highly sensitive electrochemical sensing of fipronil using a ZnO/Graphene@C-dots hybrid nanocomposite","authors":"La Ode Agus Salim ,&nbsp;Paulina Taba ,&nbsp;Muhammad Zakir ,&nbsp;Muhammad Nurdin ,&nbsp;Abdul Wahid Wahab ,&nbsp;Dahlang Tahir ,&nbsp;St. Fauziah ,&nbsp;Akrajas Ali Umar","doi":"10.1016/j.enmm.2025.101067","DOIUrl":"10.1016/j.enmm.2025.101067","url":null,"abstract":"<div><div>This study presents the development of a novel electrochemical sensor for the ultrasensitive detection of fipronil, a widely used pesticide, utilizing a hybrid nanocomposite material consisting of graphene (Gr), zinc oxide nanorods (ZnO NR), and carbon dots (C-dots). The hybrid nanocomposite, GZC (Graphene-ZnO@C-dots), was synthesized through a microwave-assisted method, leveraging the distinct physicochemical properties of each component to significantly enhance sensor performance. Electrochemical analysis conducted via cyclic voltammetry (CV) revealed a marked improvement in electron transfer efficiency and redox behavior compared to unmodified graphene electrodes, attributed to the synergistic interaction among ZnO NR, C-dots, and graphene. The GZC-based electrode demonstrated exceptional sensitivity in detecting fipronil, achieving an impressively low limit of detection (LOD) of 0.00490 µg/L and a limit of quantification (LOQ) of 0.01633 µg/L, outperforming numerous previously reported sensors. A strong linear correlation (R² = 0.9931) was observed between the oxidation peak current and fipronil concentration, indicating excellent analytical performance. Additionally, the sensor exhibited high stability and reproducibility, with a relative standard deviation (RSD) of 0.26 % over 20 consecutive measurements. Validation using a commercial pesticide sample confirmed the sensor’s ability to detect fipronil at trace levels with high accuracy. Moreover, the Horwitz Ratio (HorRat) of 0.024 underscores the superior reproducibility of the sensor, well below the theoretical threshold. The GZC nanocomposite electrode provides a reliable, efficient, and highly sensitive platform for detecting fipronil in environmental samples, showcasing its potential in environmental monitoring to enhance food safety and environmental health through early pesticide residue detection.</div></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"23 ","pages":"Article 101067"},"PeriodicalIF":0.0,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143807402","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":"Green synthesis of metal oxide nanoparticles using plant extracts: A sustainable approach to combat antimicrobial resistance","authors":"Sathyabama Balaji ,&nbsp;Muthu Senthil Pandian ,&nbsp;Ramasamy Ganesamoorthy ,&nbsp;Thirugnanasambandham Karchiyappan","doi":"10.1016/j.enmm.2025.101066","DOIUrl":"10.1016/j.enmm.2025.101066","url":null,"abstract":"<div><div>The green synthesis of metal oxide nanoparticles using plant extracts has emerged as a sustainable and eco-friendly approach to combat antimicrobial resistance. Bio-inspired synthesis is an innovative approach miming natural processes to create advanced materials with unique properties. This method leverages biological principles and templates to guide the synthesis of nanoparticles, polymers, and other materials. The resulting materials often exhibit enhanced performance, biocompatibility, and sustainability. This method leverages the natural reducing, capping, and stabilizing agents found in plant extracts to synthesize nanoparticles, avoiding the use of hazardous chemicals. This study explores the bio-inspired synthesis of metallic and non-metallic nanoparticles, focusing on their potential application bio-inspireds in various fields, including medicine, energy storage, and environmental remediation. By understanding and replicating nature’s strategies, bio-inspired synthesis offers a promising pathway to develop next-generation materials with improved functionality and reduced environmental impact. The development of nanoparticles (NPs) having antibacterial action, like metal oxide nanoparticles (MONPs), is made possible by nanotechnology. Because MONPs can interact with multiple biological components and suppress microbial growth, they offer a potential solution to overcome pathogenicity or antimicrobial resistance. The overview of the review provides burgeoning research surrounding the green synthesis of different nanoparticles utilizing various plant extracts. It provides the antimicrobial efficacy of nanoparticles, including zinc oxide (ZnO), titanium dioxide (TiO₂), iron oxide (FeO), copper oxide (CuO), and nickel oxide (NiO), at different concentrations against different bacterial strains. Furthermore, the mechanism underlying the antimicrobial activity of these nanoparticles was discussed. The findings underscore the importance of sustainable nanotechnology in developing effective antimicrobial agents and promoting environmental sustainability.</div></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"23 ","pages":"Article 101066"},"PeriodicalIF":0.0,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143817311","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":"Removal of Cu and Co ions form polluted water via Bi-TiO2 loaded on g-C3N4 nanostructures","authors":"Abueliz Modwi ,&nbsp;Ahmed Algarni ,&nbsp;Ibrahim Sulaiman Almuzaini ,&nbsp;Abdulaziz I. Alromaeh ,&nbsp;Fahad Ibrahim Alghuraybi ,&nbsp;Tahani M. Alresheedi ,&nbsp;Abdulaziz A. Alharbi","doi":"10.1016/j.enmm.2025.101063","DOIUrl":"10.1016/j.enmm.2025.101063","url":null,"abstract":"<div><div>This study surveys the impact of Bi@TiO₂ on the separate and combined adsorption of Cu (II) and Co (II) heavy metals in a water-based solution using g-C₃N₄ nanosheets. The Bi@TiO₂@CN nanostructures are effectively produced using the sol–gel technique and ultrasound method. The manufactured materials of Bi@TiO₂@CN are confirmed by SEM, EDX, XRD, FTIR, and XPS characterizations. The BET surface area was 45.43 m²/g, and the pore size distribution is 1.5406 nm. Nanostructures exhibit significant adsorption capabilities for Cu (II) (562.7 mg/g) and Co (II) (547 mg/g) after 24 h under optimum experimental conditions. The adsorption isotherm models have a strong agreement with the Langmuir isotherm, while the investigation on kinetics model fitting demonstrates an excellent fit with the pseudo-second-order. Furthermore, the adsorbent composite was regenerated in four cycles without loss of efficiency or stability. This study offers valuable insights into the significance of Bi@TiO₂@CN nanostructures in achieving extremely efficient, fast, and simultaneous removal of heavy metals.</div></div>","PeriodicalId":11716,"journal":{"name":"Environmental Nanotechnology, Monitoring and Management","volume":"23 ","pages":"Article 101063"},"PeriodicalIF":0.0,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715420","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}