Environmental Science: Nano最新文献

{"title":"Correction: Emerging investigator series: long-term exposure of amorphous silica nanoparticles disrupts the lysosomal and cholesterol homeostasis in macrophages","authors":"Ronglin Ma, Xiaoming Cai, Ye Zhou, Xi Liu, Di Wu, Huizhen Zheng, Yanxia Pan, Jun Jiang, Shujuan Xu, Qianqian Xie, Jie Jiang, Weili Wang, Nikolai Tarasenko, Fangjun Wang, Ruibin Li","doi":"10.1039/d4en90047b","DOIUrl":"https://doi.org/10.1039/d4en90047b","url":null,"abstract":"Correction for ‘Emerging investigator series: long-term exposure of amorphous silica nanoparticles disrupts the lysosomal and cholesterol homeostasis in macrophages’ by Ronglin Ma <em>et al.</em>, <em>Environ. Sci.: Nano</em>, 2022, <strong>9</strong>, 105–117, https://doi.org/10.1039/D1EN00696G.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142405236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The transformation of lepidocrocite (γ-FeOOH) with Fe(II)(aq) in slightly acidic media: intermediate pathways and biomimetic behavior","authors":"Mario Alberto Gomez, Yiwen Chen, Miao Song, Dongsheng Li, Alan Scott Lea, Shuhua Yao, Yihang Duan, Yongfeng Jia, Yige Cai, Tangfu Xiao","doi":"10.1039/d4en00670d","DOIUrl":"https://doi.org/10.1039/d4en00670d","url":null,"abstract":"Lepidocrocite (LP) is commonly found in natural or anthropogenic environments and oxidized alloy steel waste storage containers. Despite its importance, the end products formed and its mineral transformation pathways, including intermediate steps and underlying mechanisms under Fe(<small>II</small>)<small>_(aq)</small> catalysis still need to be clarified due to decades of dispersed research. In this work, we investigated LP's catalytic transformation with 10 mM and 0.2 mM Fe(<small>II</small>)<small>_(aq)</small> at their natural solution pH's <em>via</em> bulk (X-ray Diffraction/XRD, Raman and Attenuated Total Reflectance Fourier Transform Infrared/ATR-FTIR) and micro/nano-scale (semi <em>in situ</em> Transmission Electron Microscopy/TEM) analysis. In general, we observed that goethite (GT) and LP were the main end products. However, a series of two major distinct intermediate events that were initiated by a dissolution type of reaction along with an “induction period” (lack of dissolution) on LP occurred. Fascinatingly, two of the intermediate steps along its mineral transformation presented novel types of non-classical mechanisms of crystallization <em>via</em> some type of guided oriented particle attachment. Furthermore, one of these intermediate steps is biomimetic in appearance, similar to what is observed during bacterial particle attachment. However, it uses inorganic nano-wire antennas that have a sensory-like function as observed with bacterial fimbriae and/or flagellum through an electron transparent film (similar to a bio-film matrix). Finally, this work leads us to comprehend the evolution of some well documented crystal morphologies for GT commonly observed in natural and anthropogenic settings.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142405012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Intersection of Nanotechnology and Urban Agriculture: Applications of Carbon Dots","authors":"Hanfeng Zhang, Yue Wang, Tiantian Zheng, Ting Li, Rui Gao, Wenzhe Liu, Qing Chi","doi":"10.1039/d4en00709c","DOIUrl":"https://doi.org/10.1039/d4en00709c","url":null,"abstract":"Amidst the ongoing urbanization process, the significance of urban agriculture has garnered increasing attention. With the expansion of urban population, the urban landscape broadens, and agriculture becomes more commercialized, the connection between the city and agriculture is gradually strengthened. Consequently, there is an urgent need to explore efficient, environmentally friendly, and sustainable modes of urban agricultural production. Carbon dots (CDs), emerging as a novel fluorescent nanomaterial, exhibit remarkable biocompatibility, nanoscale dimensions, low toxicity, and photoluminescence properties. These characteristics render CDs capable of safely and effectively enhancing photosynthesis efficiency, thus revealing immense application potential in the realm of urban agriculture. This paper delves into the characteristics and functionalities of CDs in various agricultural contexts, including plant photosynthesis, plant transport and storage systems, as well as biosecurity considerations. Furthermore, it explores the applications prospects of CDs in urban agriculture, aiming to provide robust support for the advancement of this vital sector.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142405078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of humic acid and UV-irradiation on iron-based nanoparticle toxicity in Girardia tigrine.","authors":"Natasha Yadav, Anurag Nath, Pushplata Prasad Singh, H. B. Bohidar, Damien Callahan, Antoine M Dujon, Luis O.B. Afonso, Aaron G Schultz","doi":"10.1039/d4en00449c","DOIUrl":"https://doi.org/10.1039/d4en00449c","url":null,"abstract":"The rapid advancement of nanotechnology has led to the increasing application of metal oxide nanoparticles (NPs) in various fields, including agriculture, where they offer potential benefits such as improved nutrient delivery and pest control. However, concerns about their environmental impact necessitate a comprehensive assessment of their safety. This study investigated the potential toxic effects of iron-based nanoparticles (NPs) on freshwater planarian and the influence of abiotic factors such as humic acid (HA) and UV exposure on their toxicity. Three different types of iron-based NPs were tested, including commercially available Sigma iron oxide magnetic NPs (Sig_IOMNPs), biologically synthesized BS_IOMNPs and Zn-Fe and bulk FeSO4. Sigma and biogenic nanoparticles had predominantly magnetite (Fe3O4) structure whereas Zn-Fe possessed a bimetallic conformation. Interaction of these NPs with abiotic factors (HA and UV light) led to an increase in their hydrodynamic diameter. In contrast to the commercial sources (Sig_IOMNPs and bulk FeSO4), the biologically synthesized NPs did not cause any acute or sublethal toxicity to the planarian when alone or in combination with HA and UV. These results suggest that biologically synthesized iron-based NPs (Zn-Fe and BS_IOMNPs) may be a safe alternative to conventional bulk iron-based fertilizers. This study highlights the importance of investigating the physicochemical changes of NPs in environmentally realistic conditions and assessing their potential toxicity to aquatic organisms. These findings can contribute to the development of safe and sustainable agricultural practices, promoting the use of iron-based NPs as a new generation of fertilizers.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142405015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of Weathering and Simulated Gastric Fluid Exposure on Cellular Responses to Polystyrene Particles","authors":"Liyuan Gong, Animesh Pan, Takeshi Matsuo, Hemma Kanniyappan, Irene Andreu, Alan Rothman, Geoffrey D Bothun, Mathew T Mathew, Yang Lin","doi":"10.1039/d4en00444b","DOIUrl":"https://doi.org/10.1039/d4en00444b","url":null,"abstract":"Microplastics pose a growing environmental threat with complex implications for human health. Despite the extensive research on the cytotoxicities of microplastics, gaps remain in understanding cellular responses to the interplay between environmental weathering and physiological processes. This study aims to fill this knowledge gap by evaluating and comparing the in vitro cellular responses to pristine polystyrene particles, particles weathered under UV light in DI water and seawater, and particles with subsequent incubation in simulated gastric fluid (SGF). In this study, Fourier transform infrared spectroscopy in attenuated total reflection mode (ATR-FTIR), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS) were implemented to conduct surface chemistry and morphology characterizations of the particles. The combination of these techniques allowed a comprehensive understanding of surface morphology and chemistry alterations due to the weathering degradation and SGF incubation. Results showed nitrogen and carbonyl groups formed on weathered particles, and seawater-weathered particles showed a more pronounced weathering degree. After SGF incubation, stronger nitrogen and amide groups were detected on the surface of weathered particles, and more organic matter was attached. Two cell lines that are widely used for the evaluation of microplastic cytotoxicity were used, RAW264.7 macrophage and Caco-2 intestine epithelial cells. Results showed weathered and SGF-treated particles enhanced macrophage viability and pro-inflammatory effects compared to pristine particles. Elevated reactive oxygen species (ROS) generation was detected for all particle groups. Weathered particles caused higher cytotoxicity effects on Caco-2 cells and damaged tight junction integrity. The organic matter formation from the SGF incubation protected tight junction integrity and reduced cytotoxicity. These findings highlight the importance of taking both environmental and physiological factors into account for a more comprehensive assessment of microplastic toxicity.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142405076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Salinity alters the toxicity of copper nanoparticles on anammox consortia through modulating extracellular polymeric substances and membrane permeability","authors":"Ya-Fei Cheng, Meng Li, Hai-Tian Xu, Shu-Yang Fang, yu zhang, Zheng-Zhe Zhang, Ren-Cun Jin","doi":"10.1039/d4en00688g","DOIUrl":"https://doi.org/10.1039/d4en00688g","url":null,"abstract":"Among numerous engineered nanoparticles (NPs), CuNPs had been identified as a kind of high-risk inhibitor to anammox bacteria; however, the potential effects of salinity on the toxicity of CuNPs to anammox consortia remain unclear. Their short-term and long-term effects on anammox consortia were investigated by batch assays and continuously-fed bioreactors. The addition of 5.0 - 7.4 g L-1 NaCl immediately shielded the acute inhibition of 2.0 - 4.6 mg L-1 CuNPs on anammox activity. However, the coexistence of 5.0 g L-1 NaCl significantly aggravated the inhibitory effect of 3.0 mg L-1 CuNPs on anammox activity after the exposure of about one month through reducing the content of extracellular polysaccharides. Even, the membrane permeability was significantly increased with the further increase of NaCl to 8.0 g L-1. Although the relative abundance of anammox bacteria at the DNA level was relatively higher, most of the anammox cells may not be able to perform metabolic functions normally due to membrane damage. Thus, appropriate salinity would attenuate the adverse impacts caused by the short-term shock of CuNPs, while pre-treatment is required to avoid the synergistic stress of high CuNPs when treating high salt wastewaters.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142405016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of two-dimensional bismuth molybdenum oxide (2D-BMO) nanosheets and their application as fluorescent probes for the detection of explosive nitroaromatic compounds","authors":"Shams Ur Rehman, Sivakumar Musuvadhi Babulal, Muhammad Mustafa, Hui-Fen Wu","doi":"10.1039/d4en00517a","DOIUrl":"https://doi.org/10.1039/d4en00517a","url":null,"abstract":"2D-BMO fluorescent nanosheets were synthesized using a solvothermal method followed by probe sonication. These nanosheets were then employed as fluorescent probes for detecting nitroaromatic compounds picric acid (PA) and 2,4-dinitrophenylhydrazine (2,4-DNPH), which have recently garnered significant attention due to their explosive nature and environmental impact. The fluorescent nanoplatform exhibited stable fluorescence emission at a wavelength of 400 nm (<em>λ</em><small>_em</small>) when excited at 340 nm (<em>λ</em><small>_ex</small>). The fluorescence quenching response towards PA and 2,4-DNPH was assessed within a concentration range of 50 to 2000 nM, showing linear responses within the ranges of 50–1100 nM and 50–1400 nM, respectively. The limits of detection were determined to be 2.21 nM for PA and 2.30 nM for 2,4-DNPH, with corresponding <em>R</em><small>²</small> values of 0.999 and 0.994. The interaction between the 2D-BMO nanosheets and nitroaromatics was the synergistic combination of the FRET, IFE, and electrostatic interaction, which was studied and explained by UV-visible absorption spectroscopy and zeta potential analysis. This 2D-BMO fluorescent sensor could pave the way for replacing traditional dyes that pose significant harm to the environment in the foreseeable future.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142385555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sustainable nanocarriers fabricated by the dipeptide-based co-assemblies for enhancing the delivery and translocation of herbicide","authors":"Zirui Zheng, Ziyun Yang, Zehua Meng, Siyang Liu, Tianyue Wu, Chengyi He, Chenhui Zhang, Ma Chen, Yuxia Gao, Fengpei Du","doi":"10.1039/d4en00696h","DOIUrl":"https://doi.org/10.1039/d4en00696h","url":null,"abstract":"Pesticide delivery platforms are effective means to improve the control efficiency of pesticide through multiple functionalities. However, the prevalent use of pesticide carriers is often hindered by complex synthetic pathways, environmentally unfriendly components, and limited loading capacities, which restrict their practical applications in agriculture. In this work, we developed sustainable pesticide nanocarriers using a straightforward supramolecular co-assembly approach, which employed the bio-based diphenylalanine (FF) as the assembling molecule and the herbicide fluroxypyr (FP) as the active ingredient. Driven by the synergistic effects of hydrogen bonding, electrostatic interactions, π-π stacking, hydrophobic interactions and van der Waals forces, FP and FF co-assembled into stable assemblies with high loading capacity. Notably, the co-assemblies with different compositions exhibited tunable microstructures, including the wormlike micelles, micelles-arranged coils, and vesicles. Additionally, these nanocarriers demonstrated sensitive responsive release properties based on the FP/FF ratio and the change of pH value, and nearly 97.78% of FP could be released by the 1:1 co-assemblies at pH of 5. Furthermore, the alteration in size and microscopic morphology after co-assembly made FP easier to be translocated in the target weed, which ultimately enhanced the herbicidal activity. Overall, this work proposes a promising approach for greening and simplifying pesticide carriers, offering novel insights and strategies for sustainable agricultural development.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142385597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nano-silicon enhances tomato growth and antioxidant defense under salt stress","authors":"Shuaibing Wang, Xiang Shen, Xin Guan, Li Sun, Yang Zhongxue, Dandan Wang, Yinglong Chen, Peiqiang Li, Zhihong Xie","doi":"10.1039/d4en00770k","DOIUrl":"https://doi.org/10.1039/d4en00770k","url":null,"abstract":"With the rapid expansion of applications in agriculture, nanotechnology has emerged as an effective alternative for alleviating abiotic stress in plants. In this study, the effects of silicon nanoparticles (SiNPs) on Na+ accumulation and salt stress in tomatoes were investigated. The results showed that a concentration of 200 mg·L-1 SiNPs significantly improved tomato growth. Furthermore, photosynthesis and chlorophyll content showed positive responses to SiNPs treatment compared to salt treatment alone. Additionally, the application of 200 mg·L-1 SiNPs effectively mitigated salt-induced oxidative stress by increasing the activity of antioxidant enzymes and reducing the levels of H2O2 (by 41.59% and 34.40%) and MDA (by 45.47% and 49.99%). Simultaneously, SiNPs treatment led to significant increases in the contents of K+ and Si in tomato seedlings, while decreasing the absorption of Na+. qPCR results demonstrated that SiNPs significantly up-regulated the expression of genes related to antioxidant stress defense and salt tolerance. In summary, SiNPs hold promise as potential modifiers to enhance the response and tolerance to salt stress in tomatoes.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142384429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nano-TiO2 and elevated temperature impair intestinal health in crabs via a mussel-based food chain","authors":"Rim EL Amouri, Zhihan Tu, Mohamed H. Abo-Raya, Xiaotong Wang, Yuntian Shi, Menghong Hu, Youji Wang","doi":"10.1039/d4en00657g","DOIUrl":"https://doi.org/10.1039/d4en00657g","url":null,"abstract":"Nano-titanium dioxide (nano-TiO<small>₂</small>) is a ubiquitous contaminant in the marine environment that accumulates in sediments and biological tissues. Coupled with global warming, these challenges can enhance the deleterious properties of nano-TiO<small>₂</small>, leading to compounded pollution effects on marine life and ecosystems. This study investigated the effects of nano-TiO<small>₂</small> and increased temperatures on the Japanese swimming crab's gut microbiota and digestive system, <em>Charybdis japonica</em>, through different scenarios. We employed three exposure scenarios: direct exposure (DE) of the crabs to warming and nano-TiO<small>₂</small>, indirect exposure (IE) through consumption of mussels <em>Mytilus coruscus</em> subjected to the same conditions, and combined exposure (CE), where crabs were directly exposed to warming and nano-TiO<small>₂</small> while consuming affected mussels. Additionally, a control group was established, comprising Japanese crab <em>C. japonica</em> and thick-shelled mussel <em>M. coruscus</em> that were reared under standard temperature (22 °C, the average annual temperature in the region where the mussels and crabs were sampled) and 0 mg L<small>⁻¹</small> nano-TiO<small>₂</small> concentration conditions. The findings indicated that warming and nano-TiO<small>₂</small> disrupted the crabs' ATP production, digestive responses, and body chemical composition, leading to intestinal flora dysfunction. Notably, nano-TiO<small>₂</small> exerted a stronger impact on the crabs' digestive enzymes and intestinal flora than warming alone; however, the concurrent presence of warming and nano-TiO<small>₂</small>, especially under the direct exposure (DE) conditions, generally exacerbated the negative effects of nano-TiO<small>₂</small>. This research provides valuable insights into the implications of nano-TiO<small>₂</small> and elevated temperature on the digestive responses of marine crabs.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142384428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}