Environmental Nanotechnology, Monitoring and Management最新文献_第2页

Environmental contaminants and ecotoxicological consequences of antibiotics and personal care products in freshwater ecosystems: Monitoring and management strategies – A review and meta-analysis 淡水生态系统中抗生素和个人护理产品的环境污染物和生态毒理学后果：监测和管理策略-综述和荟萃分析

Q1 Environmental Science

Environmental Nanotechnology, Monitoring and Management

Pub Date : 2025-12-31 DOI: 10.1016/j.enmm.2025.101119

Md. Didaruzzaman Sohel , Md Saydur Rahman

Pharmaceuticals and personal care products (PPCPs) constitute a class of newly discovered micropollutants that harm living aquatic organisms. Pharmaceutical drugs, such as antibiotics, are commonly found in freshwater ecosystems and wastewater treatment effluents. Notably, antibiotics can enter freshwater habitats, posing a growing ecological threat. Additionally, PPCPs are hazardous to aquatic organisms both acutely and chronically. This study focused on peer-reviewed articles on PPCPs from 2000 to 2025 on scholarly databases. The initial literature search yielded 1,760 articles. After removing duplicates and systematically assessing study relevance, the dataset was narrowed to 1,172 articles. VOSviewer software was used to generate visual maps of keyword relatedness. We evaluated the quantitative concentrations (ng/L to µg/L) of antibiotics and PCP and reviewed their effects on growth, development, and reproductive functions in aquatic organisms. Importantly, research has uncovered a link between antibiotics and PCP pollution, which affects aquatic life. The elimination of antibiotics and PCPs has been achieved through various degrading techniques, including chemical and biological processes. However, antibiotics and PCPs cannot be entirely eliminated through biological and chemical treatments. Therefore, more effective, environmentally friendly methods must be developed for treating antibiotics and PCPs in aqueous media. This article thoroughly reviews the presence, fate, and possible hazards of antibiotics and PCPs in freshwater organisms. Additionally, this review article addresses the current knowledge gap regarding the levels and trends of antibiotics and PCPs in freshwater environments. Finally, it provides suggestions and innovative strategies that can help manage and evaluate ecological risks and contamination levels for further study.

药品和个人护理产品（PPCPs）构成了一类新发现的危害水生生物的微污染物。药物，如抗生素，通常存在于淡水生态系统和废水处理流出物中。值得注意的是，抗生素可以进入淡水栖息地，造成越来越大的生态威胁。此外，ppcp对水生生物有急性和慢性危害。本研究的重点是2000年至2025年学术数据库中关于ppcp的同行评议文章。最初的文献检索产生了1760篇文章。在去除重复和系统评估研究相关性后，数据集缩小到1172篇。使用VOSviewer软件生成关键词相关性可视化图。我们评估了抗生素和PCP的定量浓度（ng/L到µg/L），并回顾了它们对水生生物生长、发育和生殖功能的影响。重要的是，研究发现了抗生素和影响水生生物的PCP污染之间的联系。抗生素和pcp的消除是通过各种降解技术实现的，包括化学和生物过程。然而，抗生素和pcp不能通过生物和化学处理完全消除。因此，必须开发更有效、更环保的方法来处理水介质中的抗生素和pcp。本文全面回顾了淡水生物中抗生素和pcp的存在、命运和可能的危害。此外，这篇综述文章解决了目前关于淡水环境中抗生素和pcp的水平和趋势的知识差距。最后，提出了有助于生态风险和污染水平管理和评估的建议和创新策略，供进一步研究。

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引用次数: 0

Nano ZnCuFe2O4 decorated activated carbon derived from date palm biowaste for efficient adsorptive removal of atenolol from water and additional photocatalytic activity 纳米ZnCuFe2O4修饰的枣椰树生物废弃物活性炭对水中阿替洛尔的吸附去除及光催化活性研究

Q1 Environmental Science

Environmental Nanotechnology, Monitoring and Management

Pub Date : 2025-12-30 DOI: 10.1016/j.enmm.2025.101116

Anood Ibrahim , Jibran Iqbal , Kenesha Wilson , Pramod Kumbhar , Swati Singh , Kyriaki Polychronopoulou , Yousef Nazzal

Access to clean and safe water remains a global challenge, particularly in arid regions such as the United Arab Emirates (UAE). The present study proposes an innovative approach to treat emerging sources of wastewater, like atenolol (AT) pharmaceuticals, by utilizing activated carbon (AC) produced from biomass waste of date palm leaves, an abundant agricultural waste in the UAE. The prepared AC achieved 84.5 % removal of AT; however, making its composite with nano ZnCuFe₂O₄ promoted the removal of AT to 97 % at 180 min under the conditions of [AT]₀ = 10 mg/L, [AC]₀ = [AC/ZnCuFe₂O₄]₀ = 1.0 g/L, and pH = 7.5. The removal of AT by AC and AC/ZnCuFe₂O₄ best fitted the Freundlich adsorption model and the pseudo-second-order kinetic model. Thermodynamic analysis confirmed the spontaneous and exothermic nature of AT adsorption onto AC/ZnCuFe₂O₄. The removal efficiency of AT was promoted with increasing both adsorbent and adsorbate doses. The removal efficiency of AT was declined under the conditions of both very high and lower pH. The composite material proved to be reusable and stable, and showed greater adsorption efficiency even in the presence of counter ions. The advanced characterization techniques, like FTIR, XRD, SEM-EDX, BET, XPS, and TEM showed successful formation of AC and AC/ZnCuFe₂O₄ composite with porous nature and high surface properties. The adsorptive removal mechanism of AT by the prepared material was found to occur primarily through H-bonding, π-π, and n-π interactions. The prepared material also showed good photocatalytic activity and caused effective degradation of AT into different degradation products (DPs). The ecotoxicities of AT and its DPs were analyzed by ECOSAR program. The effective adsorption and photocatalytic degradation suggest significant potential of the prepared materials in treating pharmaceuticals wastewater.

获得清洁和安全的水仍然是一项全球性挑战，特别是在阿拉伯联合酋长国（阿联酋）等干旱地区。本研究提出了一种创新的方法来处理新兴的废水来源，如阿特洛尔（AT）药物，利用从阿联酋丰富的农业废弃物枣椰叶的生物质废物中产生的活性炭（AC）。制备的AC对AT的去除率达到84.5%；在[AT]0 = 10 mg/L, [AC]0 = [AC/ZnCuFe2O4]0 = 1.0 g/L, pH = 7.5的条件下，与纳米ZnCuFe2O4复合，180 min AT去除率可达97%。AC和AC/ZnCuFe2O4对AT的去除最符合Freundlich吸附模型和拟二级动力学模型。热力学分析证实了AC/ZnCuFe2O4吸附AT的自发和放热性质。随着吸附剂和吸附物用量的增加，AT的去除率均有所提高。在很高和很低的ph条件下，AT的去除效率都有所下降。复合材料具有可重复使用性和稳定性，即使在反离子存在的情况下也表现出较高的吸附效率。FTIR、XRD、SEM-EDX、BET、XPS、TEM等先进表征技术表明，AC和AC/ZnCuFe2O4复合材料具有多孔性和高表面性能。制备的材料对AT的吸附去除机制主要通过h键、π-π和n-π相互作用进行。所制备的材料还具有良好的光催化活性，并能有效地将AT降解成不同的降解产物（DPs）。采用ECOSAR程序分析了AT及其DPs的生态毒性。制备的材料具有良好的吸附和光催化降解性能，在处理制药废水方面具有广阔的应用前景。

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引用次数: 0

Nanotechnology for sustainable remediation of petrochemical effluents: trends, challenges, and opportunities 纳米技术用于石化废水的可持续修复：趋势、挑战和机遇

Q1 Environmental Science

Environmental Nanotechnology, Monitoring and Management

Pub Date : 2025-12-24 DOI: 10.1016/j.enmm.2025.101113

Isaac Alhamdu Baba , Paul Habila Samson , Saad Shafiu , Saheed Mustapha , Ambali Saka Abdulkareem , Jimoh Oladejo Tijani

The enormous expansion of the petrochemical industry has resulted in an immediate rise in complex and recalcitrant pollutants released into water bodies, posing severe environmental and health hazard to the public. The traditional treatments are largely ineffective in removing the varied array of the common pollutants found in petrochemical wastewaters, such as heavy metals, polycyclic aromatic hydrocarbons (PAHs), phenols, and volatile organic compounds (VOCs). Over the past decades, nanotechnology has been a developing area of sustainable treatment of petrochemical wastewater with a high surface area, adjustable physicochemical characteristics, and improved reactivity. The present review provides an integrated overview of recent advancements in application of nanomaterials such as metal oxides, carbon-based nanostructures, and hybrid nanocomposites for efficient treatment of petrochemical effluents. Adsorption, photocatalytic, and redox removal mechanisms are scrutinized at the molecular level. Also, the current paper establishes the master challenges, such as nanoparticle agglomeration, secondary pollution, scalability, and regulation. Trends of innovative green synthesis routes, intelligent nanomaterials, and coupled treatment systems are also presented as avenues to greener and effective remediation. This review will provide a general vision to engineers, researchers, and policymakers for the safe application of nanotechnology in environmental settings.

石化工业的大规模扩张，导致水体中复杂难降解污染物的迅速增加，对公众的环境和健康造成严重危害。传统的处理方法在去除石化废水中发现的各种常见污染物方面基本上是无效的，例如重金属、多环芳烃（PAHs）、酚类和挥发性有机化合物（VOCs）。在过去的几十年里，纳米技术以其高表面积、可调节的物理化学特性和提高的反应性成为石油化工废水可持续处理的一个发展方向。本文综述了金属氧化物、碳基纳米结构和杂化纳米复合材料等纳米材料在石油化工废水处理中的应用进展。吸附，光催化和氧化还原去除机制在分子水平上进行审查。此外，本文还提出了纳米颗粒团聚、二次污染、可扩展性和监管等主要挑战。创新的绿色合成路线，智能纳米材料和耦合处理系统的趋势也提出了更绿色和有效的补救途径。这篇综述将为工程师、研究人员和决策者提供纳米技术在环境环境中的安全应用的总体前景。

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引用次数: 0

Biogenic ZnO nanoparticles from Ixora coccinea: Effect of calcination on selected heavy metal removal from brackish water 生氧化锌纳米颗粒：煅烧对苦咸水中重金属去除的影响

Q1 Environmental Science

Environmental Nanotechnology, Monitoring and Management

Pub Date : 2025-12-16 DOI: 10.1016/j.enmm.2025.101114

Isaac Alhamdu Baba , Ambali Saka Abdulkareem , Tijani Jimoh Oladejo

Water pollution by heavy metals remains a priority environmental problem; as such, there is a demand for low-cost and ecologically benign approaches toward their treatment. Herein, ZnO nanoparticles were synthesized using Ixora coccinea flower extract, a nontoxic and green pathway toward nanoparticle preparation. The prepared ZnO samples were calcined in a temperature window of 350–550 °C to modulate their physicochemical properties, with subsequent use in the batch mode removal of Pb(II), Cu(II), Fe(III), Cd(II), and Cr(VI) from brackish wastewater. Amongst the calcination temperatures employed, the sample calcined at 500 °C exhibited the highest adsorption efficiency because it removed >90 % of Pb(II), Cu(II), Fe(III), and Cd(II) and 71 % of Cr(VI); this was due to a balance of crystallinity, surface functionality, and accessible active sites at this temperature. Adsorption followed pseudo-second-order kinetics, while the Langmuir isotherm described the equilibrium data, pointing toward monolayer chemisorption. Thermodynamic analysis (negative ΔG and positive ΔH) confirmed the spontaneity and endothermic nature of the adsorption process. More than 80 % removal efficiency was retained by the adsorbent even after five regeneration cycles, pointing toward its good stability and reusability. This work highlights the applicability of Ixora coccinea-derived ZnO nanoparticles as a sustainable and efficient adsorbent toward multi-metal wastewater remediation.

重金属污染水污染仍然是一个优先的环境问题；因此，对低成本和生态友好的治疗方法有需求。本文采用无毒、绿色的纳米颗粒制备途径——鸢尾花提取物合成ZnO纳米颗粒。制备的ZnO样品在350 ~ 550℃的温度窗下煅烧，以调节其物理化学性质，随后用于间歇模式去除微盐废水中的Pb(II), Cu(II), Fe(III), Cd（II）和Cr（VI）。在不同的焙烧温度下，500℃焙烧样品的吸附效率最高，可去除90%的Pb（II）、Cu（II）、Fe（III）、Cd（II）和71%的Cr(VI)；这是由于结晶度、表面功能和在该温度下可获得的活性位点的平衡。吸附遵循准二级动力学，而Langmuir等温线描述了平衡数据，指向单层化学吸附。热力学分析（负ΔG和正ΔH）证实了吸附过程的自发性和吸热性质。经过5次再生，吸附剂的去除率仍保持在80%以上，表明吸附剂具有良好的稳定性和可重复使用性。这项工作强调了Ixora coccinea衍生的ZnO纳米颗粒作为多金属废水修复的可持续和高效吸附剂的适用性。

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引用次数: 0

High-sensitive electrochemical assay for endocrine disruptor bisphenol A detection based on graphene/TiO2-S nanohybrid modified sensor 基于石墨烯/TiO2-S纳米杂化修饰传感器的内分泌干扰物双酚A高灵敏度电化学检测

Q1 Environmental Science

Environmental Nanotechnology, Monitoring and Management

Pub Date : 2025-12-08 DOI: 10.1016/j.enmm.2025.101107

Irwan Irwan , Anwar Anwar , Wenkey Mangera P , Muhammad Nurdin , Maulidiyah Maulidiyah , Muhammad Zakir Muzakkar

Bisphenol A (BPA) is one of the most widely discussed endocrine-disrupting compounds due to its significant impact on both human health and the environment. Therefore, the development of accurate, rapid, and portable monitoring methods for BPA is urgently needed. In this study, we report the electrochemical detection of BPA using a novel graphene/TiO₂-S (GTS) nanocomposite, synthesized through a simple sonication process. The prepared nanocomposite was characterized by Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and Energy-Dispersive X-ray Spectroscopy (EDX). The average particle size was found to range between 100–500 nm. Furthermore, the electrochemical performance of the GTS-modified electrode was investigated using cyclic voltammetry techniques. Under optimal conditions, the proposed sensor exhibited two linear response ranges: 0.1–0.9 µgL^-1 (R² = 0.996) and 1–10 µgL^-1 (R² = 0.998), with a low limit of detection (LOD) of 0.0048 µgL^-1. Additionally, the sensor demonstrated good stability and selectivity, indicating its promising potential for BPA detection in real sample analysis.

双酚A （BPA）是被广泛讨论的内分泌干扰化合物之一，因为它对人体健康和环境都有重大影响。因此，迫切需要开发准确、快速、便携的双酚a监测方法。在这项研究中，我们报告了使用一种新的石墨烯/TiO2-S （GTS）纳米复合材料进行双酚a的电化学检测，该复合材料通过简单的超声过程合成。采用傅里叶变换红外光谱（FTIR）、x射线衍射（XRD）、扫描电镜（SEM）和能量色散x射线能谱（EDX）对所制备的纳米复合材料进行了表征。平均粒径在100-500纳米之间。此外，利用循环伏安法研究了gts修饰电极的电化学性能。在最佳条件下，该传感器具有0.1 ~ 0.9µgL-1 （R2 = 0.996）和1 ~ 10µgL-1 （R2 = 0.998）两个线性响应范围，低检出限（LOD）为0.0048µgL-1。此外，该传感器表现出良好的稳定性和选择性，表明其在实际样品分析中检测BPA的潜力很大。

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引用次数: 0

From waste to worth: A bio-inspired green route for the fabrication of yucca leaf–TiO2 nanocomposites toward efficient and sustainable water purification 从废物到价值：丝兰叶- tio2纳米复合材料的高效和可持续水净化的仿生绿色路线

Q1 Environmental Science

Environmental Nanotechnology, Monitoring and Management

Pub Date : 2025-12-04 DOI: 10.1016/j.enmm.2025.101109

Sayed Kotb Ali , Mostafa M. Emara , Rabie Saad Farag , Moaz M. Abdou , Mahmoud F. Mubarak

The present study introduces a sustainable and bio-inspired strategy for converting Yucca elephantipes leaf waste into an efficient TiO₂-based nanocomposite for green water purification applications. The Yucca-derived nanocomposites (YEL–TiO₂) were fabricated via an eco-friendly synthesis route and comprehensively characterized using FTIR, XRD, SEM, and TGA to elucidate their chemical interactions, crystallinity, surface morphology, and thermal stability. The optimized nanocomposite, YEL–TiO₂ (0.60), exhibited a balanced surface charge and highly dispersed anatase TiO₂ nanoparticles, achieving outstanding turbidity removal efficiency of 86.5 % at pH 4.8, a dosage of 1.8 g L⁻¹, and a 30 min. settling period. Mechanistic analyses revealed that the improved performance arises from synergistic interactions between the hydroxyl-rich biopolymer matrix and TiO₂ nanoparticles, facilitating charge neutralization, polymer bridging, and sweep flocculation. Compared with conventional coagulants such as polyaluminum chloride and alum, the YEL–TiO₂ (0.60) system demonstrated superior or comparable clarification efficiency while offering significant advantages in biodegradability, low residual Ti concentration (<0.05 mg L⁻¹), and production cost (∼0.23 USD kg⁻¹). These findings highlight the potential of Yucca-based TiO₂ nanocomposites as a scalable, low-cost, and environmentally benign alternative for sustainable water and wastewater treatment, transforming agricultural waste into a value-added material aligned with circular economy principles.

本研究介绍了一种可持续的、受生物启发的策略，将象丝兰叶子废物转化为一种高效的二氧化钛基纳米复合材料，用于绿色水净化应用。采用生态友好的合成方法制备了丝兰源纳米复合材料（yal - tio2），并利用FTIR、XRD、SEM和TGA对其化学相互作用、结晶度、表面形貌和热稳定性进行了表征。优化后的纳米复合材料yal - TiO2（0.60）具有平衡的表面电荷和高度分散的锐钛矿型TiO2纳米颗粒，在pH为4.8、投加量为1.8 g L−1、沉淀时间为30 min的条件下，去浊率达到86.5%。机理分析表明，性能的提高是由于富羟基生物聚合物基质与TiO2纳米粒子之间的协同作用，促进了电荷中和、聚合物桥接和扫絮凝。与聚氯化铝和明矾等传统混凝剂相比，yal - tio2（0.60）体系表现出卓越或相当的澄清效率，同时在生物降解性、低残留Ti浓度（0.05 mg L−1）和生产成本（0.23 USD kg−1）方面具有显著优势。这些发现突出了尤卡大学TiO2纳米复合材料作为可持续水和废水处理的可扩展、低成本和环保替代品的潜力，将农业废弃物转化为符合循环经济原则的增值材料。

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引用次数: 0

Seed germination and plant growth response to treated dye effluent using Tridax procumbens-mediated CeO2-ZnO green NCs for wastewater treatment and chromium reduction 种子萌发和植物生长对染料废水处理中氧化铈氧化锌绿色nc的响应

Q1 Environmental Science

Environmental Nanotechnology, Monitoring and Management

Pub Date : 2025-12-04 DOI: 10.1016/j.enmm.2025.101108

P. Ananthu , Pallavi Sulakiya , J. Manjanna , G. Nagaraju , H. Raja Naika

The growing challenge of water pollution caused by synthetic dyes and toxic heavy metals necessitates the development of efficient, eco-friendly remediation strategies. In this study, a CeO₂-ZnO Nanocomposite (NC) was synthesised through a sustainable green synthesis method to address these concerns. The study investigates the photocatalytic degradation of Methylene Blue (MB) dye using a CeO₂-ZnO NC. This method employed zinc nitrate hexahydrate for Zinc Oxide (ZnO) and cerium nitrate hexahydrate as the precursor for Cerium Oxide (CeO₂) nanoparticle synthesis. The green synthesis process also involved the use of Tridax procumbens (Linn.), a natural plant, which served as both a reducing agent and a fuel for the reaction. To fully assess the structural, chemical, and electrical characteristics of the synthesised composite, various analytical techniques were employed. The optical band gap of the composite was determined to be 2.95 eV based on the Tauc relation. The photocatalytic performance of the CeO₂-ZnO NC was then evaluated for the degradation of MB dye under different experimental conditions. Key parameters such as the variation in catalyst concentration, dye concentration, and pH levels were tested, alongside scavenger tests to examine the mechanism of the photocatalytic process. The results revealed that the CeO₂-ZnO NC was highly effective in degrading the dye, achieving more than 94 % degradation within 180 min under visible light exposure. Seed germination and plant growth activities are also carried out for Mustard seeds using dye water and dye-degraded water to compare the growth. Furthermore, the NC demonstrated significant potential in environmental applications, as it was capable of reducing Chromium (VI) by up to 67.7 %, converting it to the less toxic Chromium (III).

由合成染料和有毒重金属引起的水污染日益严峻的挑战要求开发高效、生态友好的修复策略。为了解决这些问题，本研究通过可持续的绿色合成方法合成了CeO2-ZnO纳米复合材料（NC）。研究了CeO2-ZnO NC光催化降解亚甲基蓝（MB）染料。该方法采用六水硝酸锌合成氧化锌（ZnO）和六水硝酸铈作为氧化铈（CeO2）纳米颗粒的前驱体。绿色合成过程还涉及到使用一种天然植物——原甘油三酯，它既是反应的还原剂，也是反应的燃料。为了充分评估合成复合材料的结构、化学和电气特性，采用了各种分析技术。根据Tauc关系确定复合材料的光学带隙为2.95 eV。在不同的实验条件下，考察了CeO2-ZnO NC光催化降解MB染料的性能。对催化剂浓度、染料浓度和pH值等关键参数进行了测试，并对清除剂进行了测试，以检验光催化过程的机制。结果表明，CeO2-ZnO NC对染料的降解非常有效，在可见光照射下180 min内降解率达到94%以上。用染料水和染料降解水对芥菜种子进行了种子萌发和植物生长活动的比较。此外，NC在环境应用方面显示出巨大的潜力，因为它能够将铬（VI）还原高达67.7%，将其转化为毒性较小的铬（III）。

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引用次数: 0

Coupled MXene-MoS2 membrane/NF treatment for oily wastewater MXene-MoS2膜/NF耦合处理含油废水

Q1 Environmental Science

Environmental Nanotechnology, Monitoring and Management

Pub Date : 2025-12-01 DOI: 10.1016/j.enmm.2025.101106

Zainab Al Ansari , Maryam Al Shehhi , Linda Zou

A novel amphiphilic nanocomposite low-pressure membrane was fabricated by incorporating 2D nanomaterials MXene (Ti₃C₂T_x) and oleophilic MoS₂ nanospheres into a cellulose polymer membrane substrate (CMN-MX), the hybrid nanocomposite membrane was used for oil droplets and toxic organic pollutant removal. The nanospheres of MoS₂ and 2D layers of MXene were confirmed by SEM and EDX characterization. The membrane’s performance was evaluated using an oil-in-water emulsion stabilized by lecithin, simulating petroleum-derived oily wastewater. The addition of MXene significantly improved petroleum removal efficiency to 89.45% and contributed catalytic generation of reactive oxygen species (ROS), which further supported antifouling and partial degradation of dissolved organics. Further, the CMN-MX membrane was employed as a pre-treatment step before nanofiltration (NF). The coupled CMN-MX/NF system removed 95.79% of oil and 74.64% of toxic dichlorophenol (DCP), markedly higher than that by NF alone, and demonstrated 50% less flux decline, confirming the efficacy of this pretreatment strategy. This research offers a new pathway for using non-RO membranes to treat complex industrial wastewater. The coupled MXene-MoS₂ Membrane/NF treatment offered adsorptive oil removal, catalytic decomposition and fouling mitigation, achieved efficient wastewater treatment.

将二维纳米材料MXene （Ti3C2Tx）和亲油的MoS2纳米球掺入纤维素聚合物膜底物（CMN-MX）中，制备了一种新型两亲性纳米复合低压膜，用于去除油滴和有毒有机污染物。通过SEM和EDX表征证实了MoS2纳米球和MXene二维层。采用卵磷脂稳定的水包油乳液，模拟石油衍生含油废水，对膜的性能进行了评价。MXene的加入显著提高了石油的去除率，达到89.45%，并促进了活性氧（ROS）的催化生成，进一步支持了溶解有机物的防污和部分降解。此外，CMN-MX膜被用作纳滤（NF）前的预处理步骤。CMN-MX/NF耦合体系对油脂的去除率为95.79%，对有毒二氯酚（DCP）的去除率为74.64%，明显高于NF单独处理，且通量下降幅度减小50%，证实了该预处理策略的有效性。本研究为非反渗透膜处理复杂工业废水提供了一条新的途径。MXene-MoS2膜/NF耦合处理具有吸附除油、催化分解和减轻污染的功能，实现了污水的高效处理。

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引用次数: 0

Spirogyra derived CuO-NPs with antibacterial, heavy metal adsorption, and photocatalytic dye degradation: A sustainable approach in environmental remediation Spirogyra衍生的具有抗菌、重金属吸附和光催化染料降解的CuO-NPs：一种可持续的环境修复方法

Q1 Environmental Science

Environmental Nanotechnology, Monitoring and Management

Pub Date : 2025-11-08 DOI: 10.1016/j.enmm.2025.101104

Samriti Guleria , Aparajita Bhasin , Prince Chawla , Vinay Kumar Dhiman , Prashant Anil Pawase , Halis Simsek

The current research work focuses on the environmentally friendly synthesis of stable copper oxide nanoparticles (CuO-NPs) using aqueous extract of Spirogyra species as a natural reducing and capping agent. Copper (II) sulphate (CuSO₄) was used as the precursor, and the concentration of Spirogyra extract was evaluated from 5 % to 30 % (v/v), to identify the optimal condition for nanoparticles synthesis. The formation of CuO-NPs was confirmed using UV–visible spectrophotometry, based on the characteristic of localized surface plasmon resonance (LSPR) within the 200–800 nm range. Moreover, particle size analysis performed through differential scanning calorimetry indicated that nanoparticles synthesized using 20 % Spirogyra extract had an average size of 12.86 nm. Additionally, functional group and structural characterization were performed with Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy with energy-dispersive X-ray spectroscopy (EDX), respectively. Moreover, thermal analysis of CuO-NPs was performed by using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Furthermore, the biosynthesized CuO-NPs exhibited significant antibacterial activity with inhibition zones of 20.8 mm against Listeria monocytogenes, 19.95 mm against Staphylococcus aureus, 19.8 mm against Streptococcus lactis, 19.5 mm against Salmonella typhimurium, 19.0 mm against Shigella dysenteriae, and 18.9 mm against Escherichia coli. Additionally, these nanoparticles demonstrated significant adsorptive removal efficiency (80–85 %) of toxic heavy metals, including Pb, As, Hg, and Cd. Photocatalytic performance tests demonstrated excellent degradation efficiencies of methylene blue and crystal violet of 90.31 % and 89.89 %, respectively, under UV irradiation in 80 min. These results indicate the potential use of Spirogyra-assisted CuO-NPs in antimicrobial applications, heavy metal remediation, and photodegradation of synthetic dyes relevant to food safety and environmental sustainability.

目前的研究重点是利用水绵属植物的水萃取物作为天然还原和封盖剂，环境友好地合成稳定的氧化铜纳米颗粒（CuO-NPs）。以硫酸铜（CuSO4）为前驱体，在5% ~ 30% （v/v）的浓度范围内对水螺提取物进行评价，以确定合成纳米颗粒的最佳条件。利用200 ~ 800 nm范围内的局部表面等离子体共振（LSPR）特性，利用紫外可见分光光度法证实了CuO-NPs的形成。此外，通过差示扫描量热法进行的粒度分析表明，使用20%丝绵草提取物合成的纳米颗粒平均尺寸为12.86 nm。此外，利用傅里叶变换红外光谱（FTIR）和扫描电子显微镜（EDX）分别进行了官能团和结构表征。此外，采用差示扫描量热法（DSC）和热重分析法（TGA）对CuO-NPs进行了热分析。此外，生物合成的CuO-NPs对单核增生李斯特菌、金黄色葡萄球菌、乳酸链球菌、鼠伤寒沙门菌、痢疾志贺氏菌和大肠杆菌的抑制区分别为20.8 mm、19.95 mm、19.8 mm和18.9 mm。此外，这些纳米颗粒对有毒重金属（包括Pb、As、Hg和Cd）的吸附去除效率高达80 - 85%。光催化性能测试表明，在紫外线照射下80分钟，亚甲基蓝和结晶紫的降解效率分别为90.31%和89.89%。这些结果表明，在与食品安全和环境可持续性相关的抗菌、重金属修复和合成染料的光降解方面，螺旋体辅助的CuO-NPs具有潜在的应用前景。

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引用次数: 0

Analytical approach for the determination of persistent, mobile and toxic substances in environmental soil and water samples 环境土壤和水样中持久性、流动性和有毒物质测定的分析方法

Q1 Environmental Science

Environmental Nanotechnology, Monitoring and Management

Pub Date : 2025-11-07 DOI: 10.1016/j.enmm.2025.101105

Victoria Bolos-Sánchez, Sergi Gregorio-Lozano, Lubertus Bijlsma, Elena Pitarch

Reclaimed wastewater reuse for agricultural irrigation is promoted by policymakers to battle water scarcity. But persistent, mobile and toxic (PMT) substances are often not effectively removed by current wastewater treatments and may end up in soil, drainage water and even receiving aquatic environment. This work forms a part of a broader project on using contaminated water for irrigation of escarole crops. An analytical methodology based on mixed-mode liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) has been developed for the determination of eight PMTs (benzophenone-3, clarithromycin, imazalil, metformin, sulpiride, terbutryn, tiapride and tramadol) in soil and drainage water samples. Moreover, it has been considered of interest to validate the methodology for environmental water i.e., groundwater and surface water. Soil samples were treated using QuEChERS approach, while water samples were injected directly into the LC-MS/MS system. Isotopically labelled internal standards were used for matrix effect correction and extraction losses. The two methods have been validated satisfactorily (recoveries between 70–120 % and RSD < 20 %). The limits of quantification for all compounds were 5 ng·g⁻¹ and 50 ng·L⁻¹ in soil and water, respectively. Finally, the methodology has been applied to soil and drainage water samples collected from escarole crops irrigated with tap water fortified at 5 μg·L⁻¹. In addition, the methodology was applied to real surface and groundwater samples to demonstrate its applicability. This fully validated methodology is a robust tool for determining the selected PMTs and may provide valuable insights into the environmental fate when performing future irrigation programs.

政策制定者提倡将再生废水用于农业灌溉，以解决水资源短缺问题。但是，目前的废水处理往往不能有效地去除持久性、流动性和毒性物质，并可能最终进入土壤、排水甚至接受水生环境。这项工作是利用受污染的水灌溉escarole作物的更广泛项目的一部分。建立了一种基于混合模式液相色谱-串联质谱（LC-MS/MS）的分析方法，用于测定土壤和排水样品中的8种pmt（苯甲酮-3、克拉霉素、伊马唑利、二甲双胍、舒必利、特布他林、硫必利和曲马多）。此外，人们认为对环境水即地下水和地表水的方法进行验证是有意义的。土壤样品采用QuEChERS方法处理，水样直接注入LC-MS/MS系统。同位素标记内标用于基质效应校正和萃取损失。两种方法的回收率在70 - 120%之间，RSD为20%，验证结果令人满意。所有化合物在土壤和水中的定量限分别为5 ng·g−1和50 ng·L−1。最后，将该方法应用于用5 μg·L−1强化自来水灌溉的紫茎甘蓝作物土壤和排水样品。并将该方法应用于实际地表水和地下水样品中，验证了该方法的适用性。这种经过充分验证的方法是确定所选pmt的有力工具，并可能在执行未来灌溉计划时为环境命运提供有价值的见解。

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引用次数: 0