Environmental Science: Nano最新文献

{"title":"A Multi-Stimuli-Response Metal-Organic Framework Nanopesticide for Smart Weed Control in Agriculture","authors":"Ding-yang Zhang, Xue-Ping Guo, Wenhua Rao, Danmei Pan, Fang Cao, Tian-yun Zhai, Wenhui Zheng, Abubakar Yakubu Saddeeq, Xiong Guan, Zhi Chen, Xiaohong Pan","doi":"10.1039/d4en00695j","DOIUrl":"https://doi.org/10.1039/d4en00695j","url":null,"abstract":"Herbicides play an important role in weed control when it comes to ensuring a high and consistent yield in agriculture, but their effectiveness is often compromised by climatic variables. Therefore, improving the climatic adaptability of pesticides is crucial to ensure sustainable agricultural development. In this study, a novel bispyribac-sodium (BIS)–zeolitic imidazolate framework-8 (ZIF-8) nanopesticide (BIS@ZIF-8) with excellent multi-stimuli-responsive properties was synthesized. The nanopesticide BIS@ZIF-8 showed intelligent and efficient weed control. In addition, the BIS@ZIF-8 nanocomposite showed strong resistance to rainwater erosion on the leaf surface with a BIS retention rate of 76.26% under simulated rainwater, which was 41.54% higher than the BIS retention rate of the pure herbicide. Under UV light and acidic conditions, a high concentration of BIS was released from the BIS@ZIF-8 nanocomposite,","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142325176","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":"How metal/support interaction improved degradation performance in the peroxymonosulfate activation process: significance of high-valent cobalt-oxo species","authors":"Xing Fan, Wei Zhang, Huchuan Yan, Cui Lai, Dengsheng Ma, Shiyu Liu, Mingming Zhang, Ling Li, Xuerong Zhou, Xiuqin Huo, Fuhang Xu, Xiaorui Hu, Biting Wang, Hao Sun, Wuqiang He","doi":"10.1039/d4en00355a","DOIUrl":"https://doi.org/10.1039/d4en00355a","url":null,"abstract":"Currently, the strategy of metal loading is expected to promote the nonradical catalytic activity of transition metal spinel oxide catalysts in peroxymonosulfate (PMS) systems, but the connection between the mechanism of degradation performance improvement and metal–support interaction (MSI) remains unclear. Herein, a novel CoFe<small>₂</small>O<small>₄</small> loaded sepiolite composite (10-CFS) was prepared for PMS activation to degrade ciprofloxacin (CIP). 10-CFS exhibited outstanding PMS activation ability, and 98.7% of CIP was degraded within 30 min, which was significantly higher than that of the physical mixture of sepiolite and CoFe<small>₂</small>O<small>₄</small> (59.8%). A series of experiments demonstrated that the presence of Co(<small>IV</small>)<img alt=\"[double bond, length as m-dash]\" border=\"0\" src=\"https://www.rsc.org/images/entities/char_e001.gif\"/>O caused the better degradation performance of 10-CFS. Notably, theoretical calculations signified that MSI not only promoted the coupled electron–proton transfer (CEPT) process and thus changed the formation pathway of Co(<small>IV</small>)<img alt=\"[double bond, length as m-dash]\" border=\"0\" src=\"https://www.rsc.org/images/entities/char_e001.gif\"/>O, but also facilitated PMS adsorption on 10-CFS and lowered the energy barrier for Co(<small>IV</small>)<img alt=\"[double bond, length as m-dash]\" border=\"0\" src=\"https://www.rsc.org/images/entities/char_e001.gif\"/>O generation. In summary, this study illustrates deeply the mechanism of catalytic performance improvement after metal loading by focusing on the MSI and bridges the gap in understanding the MSI and degradation performance.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142325173","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":"Mitigation of salt effect using graphene oxide as additives in plantation","authors":"Mizuki Yamada, Nonoka Goto, Yuki Hachiya, Tatsuki Tsugawa, Lutfia Isna Ardhayanti, Md. Saidul Islam, Yoshihiro Sekine, Shintaro Ida, Shinichiro Sawa, Shinya Hayami","doi":"10.1039/d3en00992k","DOIUrl":"https://doi.org/10.1039/d3en00992k","url":null,"abstract":"Soil salinity threatens global food security, crippling agricultural productivity and demanding innovative solutions. On the other hand, mitigating salt stress using additives in the soil not only addresses the widespread issue of soil salinity but also opens the way for using ocean water in the cultivation process. This promising solution holds the potential to revolutionize agricultural practices and usher in a new era of sustainable and resilient food production. In this study, we explore the potential of graphene oxide (GO) as an additive to alleviate soil salinity. In a typical case study, we cultivated tomato plants in water containing 100 mM NaCl solution, with and without the presence of GO in the soil. These conditions were then compared against a control group. This study implies the feasibility of plantations in salty sail and the utilization of saltwater for the cultivation process.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142325174","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":"Photocatalytic NO removal: complete oxidation and reduction reaction for by-product inhibition and end-product recovery","authors":"Wen Cui, Jiaqi Wang, Yan Li, Pingqu Liu, Fan Dong","doi":"10.1039/d4en00715h","DOIUrl":"https://doi.org/10.1039/d4en00715h","url":null,"abstract":"Nitrogen oxides (NOx, x = 1，2, the proportion of NO was about 95%), as one of primary precursors for particulate matter and ozone, limits the continuous improvement of air quality. Photocatalytic NO purification technology has aroused wide attention and much efforts have been made to realize photocatalytic NO complete oxidation and reduction for toxic by-product inhibition and end-product recovery. This work presents a timely overview of current research progress on the conversion of NO into nitrate/ ammonia (NO3−/NH3) that could be further recycled and utilized. According to the essence of heterogeneous photocatalysis and considering the significance of reaction microenvironment (surface active sites of photocatalyst, target pollutant and reaction medium), this review systematically summarized the progress about control strategy on photocatalyst surface structure and reaction medium. Specifically, the critical overview focused on various surface modification methods of photocatalyst, coping strategy on accelerating mass transfer process of gaseous NO, and the effect of additional introduction of reductant/ antioxidant into reaction system. Furthermore, the research trends and future prospects are discussed, aiming to provide an insight into the breakthroughs and boost the development of photocatalytic NO removal technology.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142325089","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":"Real-time visualization of carbon quantum dots transport in homogeneous and heterogeneous porous media","authors":"Ying Zhao, Jian Song, Qingchun Yang, Yuelei Li, Zhuqing Liu, Fan Yang","doi":"10.1039/d4en00563e","DOIUrl":"https://doi.org/10.1039/d4en00563e","url":null,"abstract":"The widespread applications of carbon quantum dots (CQDs) have attracted much attention. This study presents a novel research system to study the transport and retention of CQDs in homogeneous and heterogeneous porous media. The light transmission visualization technique was used to visualize the real-time distribution and transport of CQDs. Results showed that the increase in quartz sand particle size and increased pH significantly enhanced the transport of CQDs. Due to the negative surface charge of CQDs shielded by high IS, the agglomeration of CQDs enhanced the clogging of CQDs. Particularly, significant aggregated fluorescence quenching of CQDs occurred at IS=100 mM and IS=200 mM. In heterogeneous media, the layer structure alteration and preferential flow contribute significantly in the transport of CQDs. Compared to the fine sand layer, most of the CQDs outflow from the coarse sand layer. The breakthrough curves for CQDs transport in porous media can be matched by a simplified Double-Monod model with high accuracy (R2&gt;0.92). Moreover, the DLVO theory and clogging mechanism well explain the environmental behavior of CQDs in 2-D porous media. This study visualized the fate of CQDs in 2-D porous media, enabling us to assess better and predict their environmental risks.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142325091","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 Varying Nano-ZnO Concentrations on the Physiology, Biochemistry, Root Exudate, and Root Microbial Community of Agrostis Stolonifera","authors":"Yian Wang, Ronghui Wang, Jiale He, Tao Li, Xinyue Fu, Jiaxin Li, Genhe He","doi":"10.1039/d4en00584h","DOIUrl":"https://doi.org/10.1039/d4en00584h","url":null,"abstract":"Nanomaterials find widespread applications, but their potential harm to the environment and ecology necessitates effective recycling methods. In this study, the effects of varying nano-ZnO concentrations (0–1000 mg/kg) on the Agrostis Stolonifera’s physiological and biochemical parameters, root exudation, and root-associated microbial communities were systematically examined. At concentrations below 500 mg/kg, nano-ZnO facilitated growth in root and leaf tissues. Conversely, higher concentrations led to a reduction in chlorophyll a, chlorophyll b, and carotenoid levels, potentially impairing photosynthetic efficiency. Concurrently, malondialdehyde levels in leaf tissues escalated with increasing nano-ZnO concentrations, while the activities of peroxidase, superoxide dismutase, and catalase initially increased before diminishing. SEM-Mapping and TEM analyses substantiated the transport of nano-ZnO within Agrostis Stolonifera. At a concentration of 500 mg/kg nano-ZnO, root and leaf tissues contained Zn at levels of 0.4 wt% and 3.0 wt%, respectively. Notably, increases in zinc accumulation within both root and leaf tissues correspond with escalating concentrations of nano-ZnO. High concentrations of nano-ZnO reduce the diversity of root exudates and modify the structural characteristics of the root microbial community. Conversely, a lower concentration of nano-ZnO (250 mg/kg) is associated with an increase in root species richness and diversity, as well as a heightened relative abundance of Gemmatimonas, Bradyrhizobium, Bryobacter, and Ammoniphilus. This study is the first report to provide critical insights into nano-ZnO behavior in Agrostis Stolonifera and underscores the necessity for further investigations to elucidate root secretion mechanisms and microbial community dynamics.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142325090","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":"Impact of Size and UV-ageing of Polystyrene Nanoparticles on Copper(II) Adsorption: Kinetics and Isotherms in Aquatic Environments","authors":"Shadab Soheilian, Beth Jordan, Fiona Hatton, Eugenie Hunsicker, Zhaoxia Zhou","doi":"10.1039/d4en00433g","DOIUrl":"https://doi.org/10.1039/d4en00433g","url":null,"abstract":"There has been substantial concern over the potential for plastic particles to serve as vectors for toxic heavy metals through adsorption. The mechanisms involved in this process are particularly understudied in the context of nano-sized particles. To address this gap, we report the adsorption of Cu<small>²⁺</small> ions onto polystyrene nanoparticles (PS-NPs) in simulated aquatic environmental conditions, with and without UV-ageing. Surfactant-free PS-NPs were synthesised with average diameters of 130, 260 and 520 nm. Scanning electron microscopy and dynamic light scattering characterisation of PS-NPs revealed increased instability and aggregation with decreasing particle size, following UV-ageing. While PS-130 nm initially exhibited higher Cu<small>²⁺</small> adsorption capacity in DI water, this value shifted in favour of PS-260 nm after UV-ageing, due to higher colloidal instability of PS-130 nm. Yet, in seawater, 3-4 times reduction in adsorption was observed for all the samples, compared to DI water, alongside accelerated equilibrium times, attributed to the competition of ions in seawater. On the surface of UV-aged PS-NPs, X-ray photoelectron spectroscopy analysis showed an increase in Cu(OH)<small>₂</small> bonds after adsorption, resulting in increased activation energy of adsorption compared to original samples. Adsorption isotherms favoured the Freundlich model, highlighting a distinct isotherm shape for each medium and a tendency toward a linear isotherm as the particle size and/or temperature increased. Thermodynamic calculations showed the adsorption interaction was exothermic, in addition to the higher spontaneity of adsorption by smaller particles. This research enhances our understanding of PS-NPs behaviour in aquatic environments, paving the way for exploring metal ions’ interaction with complex plastic nanoparticles in future studies.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142325093","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":"Unveiling the stimulatory effect of Silicon nanoparticles on direct regeneration and micro-structural developments in Cadaba trifoliata (Roxb.) Wight & Arn","authors":"Manokari M., Mohammad Faisal, Abdulrahman A. Alatar, Mahipal S Shekhawat","doi":"10.1039/d4en00640b","DOIUrl":"https://doi.org/10.1039/d4en00640b","url":null,"abstract":"Nanosilicon positively affects the growth and development of plants. Investigations were carried out to analyse the effect of applied silicon nanoparticles (SiNPs) on the multiplication and rooting of the shoots of Cadaba trifoliata (Capparaceae). In vitro-raised shoots were cultivated on Murashige and Skoog (MS) medium with 0.5 mg L-1 meta Topolin/mT and 0.25 mg L-1 indole-3 acetic acid (IAA) along with various concentrations of SiNPs. 2.0 mg L-1 nanosilicon along with optimal plant hormones improved multiplication of shoot numbers and morphology (25 shoots and 13.0 leaves shoot-1), leaf area (1.3 × 0.9 cm), biomass (647 mg fresh weight; 114 mg dry weight) production, and photopigments (Chl a: 378.0, Chl b: 513.0, and Cx+ c: 60.0 μg g-1 fresh weight). Cent percent of the shoots were rooted in half-strength MS medium with 1.25 mg L-1 indole-3-butyric acid (IBA). Incorporation of 2.0 mg L-1 SiNPs in medium promoted rooting (8.3 roots per shoot, each 4.93 cm long). Analyses of qualitative microscopic data revealed that the leaves developed from the cloned shoots exhibited well-organized stomatal guard cells and epidermal cells, thick cuticle and epidermis, and increased tissue density in mesophyll and vascular tissues. The stem and root anatomy revealed improvements in vascular tissue density and lignification in xylem vessels and phloem elements. The plantlets were acclimatized under ex vitro conditions for 8 weeks in soilrite and vermicompost mixture. These findings highlight the potential of the SiNPs in improving regeneration potential for clonal propagation of C. trifoliata.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142313768","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":"Nanoscale zero-valent iron composites for uranium-contaminated water treatment and environmental remediation: A review","authors":"Yinshan Zhu, Shusen Chen, Ziming Li, Hao Li, Muhammad Shaban, Changlun Chen","doi":"10.1039/d4en00613e","DOIUrl":"https://doi.org/10.1039/d4en00613e","url":null,"abstract":"With the development of nuclear power and the nuclear industry, some uranium-containing wastewater will inevitably be released into the environment, which poses a threat to human health and the environment. Nanoscale zero-valent iron (nZVI) and its composites can be used to treat uranium-contaminated water because of its large specific surface area, many active centres and high adsorption capacity. This review proposed a matrix loaded zero-valent iron, including bimetals, inorganic materials, carbon materials, and organic and porous framework materials. The latest research progress of various nZVI-based composites in removing uranium from aqueous solutions was reviewed. A detailed introduction to the preparation methods, removal mechanisms, and environmental factors affecting the removal performance of nZVI and its composite materials was provided. The advantages and disadvantages of nZVI and its composite materials for uranium removal were analyzed, and loading methods conducive to solving the dispersion and agglomeration problems of nZVI were emphasized. Finally, the application prospects of nZVI and its composites in the remediation of uranium-contaminated water were briefly proposed, and the application prospects in environmental remediation were discussed.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142313769","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":"Reversible metal-organic polymers template enhances platinum nanoparticles self-assemblies and accelerates POD-like catalysis for rapid and ultrasensitive multiple forms mercury detection","authors":"fan zhang, Tianyu Guo, Liwen Feng, Yaobin Lu, Jiewei Deng, Tiangang Luan","doi":"10.1039/d4en00779d","DOIUrl":"https://doi.org/10.1039/d4en00779d","url":null,"abstract":"Monitoring the distribution characteristics of various forms of mercury is crucial for understanding its biogeochemical cycling and assessing health risks. The accurate detection of inorganic and organic mercury still relies on large instruments such as CVAAS, ICP-MS, and LC-ICP-MS. Although these traditional methods can accurately analyze and differentiate mercury forms, their complexity, high cost, and inability to facilitate immediate on-site analysis at environmental sample locations represent significant limitations. Therefore, based on a reversible metal-organic polymers template for platinum nanoenzymes,we have developed a colorimetric detection method without sample pre-treatment, to rapidly and sensitively detect mercury in multiple froms. This method detected Hg2+ within a range of 0.001-5000 nM in 3 minutes, with a detection limit of 0.0006 nM (equivalent to 0.12 ng/L). Additionally, the total mercury content in samples could be quantified by this colorimetric method, enabling precise analysis of organic mercury with an accuracy on par with traditional ICP-MS. The notable enhancements in sensitivity and analysis speed could be attributed to the distinct molecular structure of the PNAs(HCl). Studies on reaction mechanisms revealed that the dense assembly of platinum nanoparticles within PNAs(HCl) and their porous external structure not only effectively protect the catalytic active sites and offer ample reaction space, thereby efficiently mimicking the POD-like enzymatic activity, but also facilitate effective and specific binding to Hg2+. To further affirm the reliability and practicality of this analysis method, a variety of real environmental water samples had been evaluated including rivers, lakes, polluted waters, and garden soil extracts. The analytical data were consistent with those obtained from traditional ICP-MS analysis. Our results demonstrated that the PNAs(HCl)-based colorimetric method offers a rapid and precise technique for the analysis of Hg2+ and organic mercury, making it ideally suited for immediate on-site analysis following environmental sample collection.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142313770","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}