Environmental Science: Nano最新文献

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Passivation Performance and Mechanism of a Novel Self-Healing Composite Passivator on Pyrite 新型自愈合复合钝化剂在黄铁矿上的钝化性能与机理
IF 8.131 2区 环境科学与生态学
Environmental Science: Nano Pub Date : 2024-07-12 DOI: 10.1039/d4en00404c
Weifeng Wu, Mengke Li, Jiang Tian, Feng Li, Yun Liu
{"title":"Passivation Performance and Mechanism of a Novel Self-Healing Composite Passivator on Pyrite","authors":"Weifeng Wu, Mengke Li, Jiang Tian, Feng Li, Yun Liu","doi":"10.1039/d4en00404c","DOIUrl":"https://doi.org/10.1039/d4en00404c","url":null,"abstract":"Acid mine drainage (AMD) is a harmful effluent from mining activities. Surface passivation technology can prevent AMD production by coating minerals with passivation films. Previous study reported a composite passivator comprising γ-mercaptopropyltrimethoxysilane (PropS-SH) and halloysite loaded with benzotriazole (BTA). However, two issues persist in this work: the organosilane-based passivator requires passivating pyrite at 50~100 °C, and the encapsulation method for the guest passivator in halloysite is limited. To address these challenges, a novel self-healing composite passivator (PLHP passivator) was synthesized, using PropS-SH and lawsone as the main passivation agents and halloysite loaded with 8-HQ as the nanofillers. Polyelectrolytes were employed as the encapsulant within the nanofillers. The formation of a hydrophobic coating on the PLHP coated pyrite surface was revealed by SEM and contact angle tests. The enhanced oxidation resistance of PLHP coated pyrite over raw pyrite and other coated pyrite was verified by electrochemical measurements and chemical leaching tests. Notably, the PLHP coatings could passivate pyrite at room temperature, exhibiting excellent long-term stability and self-healing ability. Furthermore, the incorporation of polyelectrolytes expanded the application range of guest passivator. This paper provides new insights into overcoming the limitations of organosilane-based passivation and self-healing methods in current technology.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141597264","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}
引用次数: 0
A design-phase Environmental Safe-and-Sustainable-by-Design Categorization Tool for the Development and Innovation of Nano-enabled Advanced Materials (AdMaCat) 用于纳米先进材料开发与创新的设计阶段环境安全与可持续设计分类工具 (AdMaCat)
IF 8.131 2区 环境科学与生态学
Environmental Science: Nano Pub Date : 2024-07-12 DOI: 10.1039/d4en00068d
Analuisa Rubalcaba Medina, Fernando J. Rodríguez-Macías, Anders Baun, Steffen Foss Hansen
{"title":"A design-phase Environmental Safe-and-Sustainable-by-Design Categorization Tool for the Development and Innovation of Nano-enabled Advanced Materials (AdMaCat)","authors":"Analuisa Rubalcaba Medina, Fernando J. Rodríguez-Macías, Anders Baun, Steffen Foss Hansen","doi":"10.1039/d4en00068d","DOIUrl":"https://doi.org/10.1039/d4en00068d","url":null,"abstract":"In support of the European Union’s circular economy action plans and its chemical strategy for sustainability, initiatives are being developed aimed at integrating ‘safe and sustainable by design’ (SSbD) principles and approaches in the development of chemicals and materials to promote a toxic-free environment. The expected widespread use of advanced materials (AdMa) underlines the need for addressing sustainability and environmental safety as early as possible in the material design. Here, we present AdMaCat, which is a SSbD first-tier screening categorization tool addressing environmental concerns of AdMa. The tool is aimed at the early design-phase in materials development, to enable a transparent and systematic evaluation of the functionality, safety, and sustainability of AdMa in a circular economy context. AdMaCat delivers a color coded output with design recommendations covering the material life-cycle stages manufacturing, use, and end-of-life. The applicability of AdMaCat is illustrated through a case study on organic aerogels for insulation purposes focusing on material and process selections, application, and waste management options. We conclude that AdMaCat can assist in identifying data gaps and inform decisions regarding the design of tailored AdMa by optimizing the balance of functionality, safety, and sustainability in a circular economy.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141597260","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}
引用次数: 0
Outstanding Reviewers for Environmental Science: Nano in 2023 环境科学》杰出评审员:2023 年的纳米
IF 8.131 2区 环境科学与生态学
Environmental Science: Nano Pub Date : 2024-07-12 DOI: 10.1039/d4en90023e
{"title":"Outstanding Reviewers for Environmental Science: Nano in 2023","authors":"","doi":"10.1039/d4en90023e","DOIUrl":"https://doi.org/10.1039/d4en90023e","url":null,"abstract":"We would like to take this opportunity to thank all of <em>Environmental Science: Nano</em>'s reviewers for helping to preserve quality and integrity in chemical science literature. We would also like to highlight the Outstanding Reviewers for <em>Environmental Science: Nano</em> in 2023.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141597262","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}
引用次数: 0
Enhanced removal of As(III) by manganese-doped defective UiO-66 coupled peroxymonosulfate: multiple reactive oxygen species and system stability 锰掺杂缺陷 UiO-66 耦合过氧单硫酸盐增强对 As(III) 的去除:多种活性氧物种和系统稳定性
IF 8.131 2区 环境科学与生态学
Environmental Science: Nano Pub Date : 2024-07-12 DOI: 10.1039/d4en00194j
Zihao Xie, Qingyun He, Shaobo Liu, Xinyi Huang, Mingyang Dai, Qiang Chen, Ang Sun, Jian Ye, Xiaofei Tan, Weihua Xu
{"title":"Enhanced removal of As(III) by manganese-doped defective UiO-66 coupled peroxymonosulfate: multiple reactive oxygen species and system stability","authors":"Zihao Xie, Qingyun He, Shaobo Liu, Xinyi Huang, Mingyang Dai, Qiang Chen, Ang Sun, Jian Ye, Xiaofei Tan, Weihua Xu","doi":"10.1039/d4en00194j","DOIUrl":"https://doi.org/10.1039/d4en00194j","url":null,"abstract":"Structurally defective UiO-66 has garnered significant interest due to its remarkable performance in the domains of adsorption and catalysis. In this research, the successful synthesis of Mn-doped defective UiO-66 (Mn<small><sub>1</sub></small>D<small><sub>40</sub></small>UiO-66) was confirmed by XRD and FTIR characterization. More than 95% of As(<small>III</small>) (<em>C</em><small><sub>0</sub></small> = 1.1 mg L<small><sup>−1</sup></small>) was removed in 1 h (<em>C</em><small><sub>catalyst</sub></small> = 0.2 g L<small><sup>−1</sup></small>, <em>C</em><small><sub>PMS</sub></small> = 0.1 mM). Compared with the original UiO-66, when coupled with peroxymonosulfate (PMS), Mn<small><sub>1</sub></small>D<small><sub>40</sub></small>UiO-66 accelerated the generation of reactive oxygen species (ROS), resulting in an increase in As(<small>III</small>) removal efficiency by about 50%. XPS spectra and EXAFS spectra indicated that As(<small>III</small>) adsorbed in the Mn<small><sub>1</sub></small>D<small><sub>40</sub></small>UiO-66/PMS system was fully oxidized to As(<small>V</small>) and the adsorption was attributed to As–O–Zr coordination. Several types of ROS (·OH, SO<small><sub>4</sub></small>˙<small><sup>−</sup></small>, and O<small><sub>2</sub></small>˙<small><sup>−</sup></small>) generated by PMS activation acted collectively on As(<small>III</small>) oxidation, so a single ROS scavenger did not have a marked inhibitory effect on As(<small>III</small>) removal. In addition, the system maintained efficiency over a broad pH range (3–11), and retained an arsenic removal rate higher than 89.8% even in the presence of high concentrations of several anions (SO<small><sub>4</sub></small><small><sup>2−</sup></small>/Cl<small><sup>−</sup></small>/NO<small><sub>3</sub></small><small><sup>−</sup></small>, 10 mM). Meanwhile, 99.3% of the As(<small>III</small>) could be removed by Mn<small><sub>1</sub></small>D<small><sub>40</sub></small>UiO-66 at extremely high humic acid concentrations (100 mg L<small><sup>−1</sup></small>). Due to the excellent stability of the material, only trace amounts of metal leaching were detected (Mn ion ≤ 3 μg L<small><sup>−1</sup></small>) during the whole experiment. The whole oxidation and adsorption process demonstrated excellent anti-interference ability and stability. This study shows the great potential of transition metal doped defective metal–organic frameworks in the field of adsorption and catalysis and provides a novel idea for the high-efficiency management of As(<small>III</small>) pollution in water environments.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141597261","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}
引用次数: 0
A metal-free photocatalytic active hybrid fiber as a novel self-cleaning adsorbent for enhanced tetracycline removal 一种作为新型自清洁吸附剂的无金属光催化活性杂化纤维,可提高四环素的去除率
IF 8.131 2区 环境科学与生态学
Environmental Science: Nano Pub Date : 2024-07-12 DOI: 10.1039/d4en00387j
Kaijie Ni, Ruiqi Xu, Yanlong Chen, Ming Guo
{"title":"A metal-free photocatalytic active hybrid fiber as a novel self-cleaning adsorbent for enhanced tetracycline removal","authors":"Kaijie Ni, Ruiqi Xu, Yanlong Chen, Ming Guo","doi":"10.1039/d4en00387j","DOIUrl":"https://doi.org/10.1039/d4en00387j","url":null,"abstract":"Metal-free photocatalytic degradation of pollutant is an eco-friendly green method for wastewater remediation. Herein we reported using amine modified alginate as anchor line, graphene oxide (GO) and carbon nanotubes (CNT) as photoactive units to fabricate a recyclable metal-free photocatalytic active hybrid fiber via facile carbodiimine-mediated amide coupling and calcium ion crosslinking. The results show that the photoactive fiber with unique microporosity and enhanced thermal stability has been successfully prepared. The prepared fiber presented a significantly photo-enhanced removal effect on tetracycline (TC). The efficiency of TC removal promoted by the fiber under solar irradiation is 10 times higher than that under dark. In the photocatalytic treatment of TC, the fiber also showed higher TC removal efficiency than that of GO and CNT alone synergistic effect of GO/CNT. Electron spin resonance analysis confirmed that the fiber under solar irradiation induced to the generation of <small><sup>1</sup></small>O<small><sub>2</sub></small> and hole (h<small><sup>+</sup></small>) which degraded TC. UV-vis spectra analysis indicated that GO and CNT components in the fiber promoted TC to undergo oxidative degradation. Major transformation products during TC removal were identified with Liquid chromatography mass spectrometry. Finally, such photoactivity of the fiber can be utilized to develop a convenient irradiation/agitation regeneration approach to make the fiber adsorbent reusable. The recycled fiber maintained an excellent level of TC removal performance after multiple recycling steps. Overall, this study provides a new strategy of preparing a recycled metal-free photocatalytic material for water treatment, and is of great reference value for research in this field.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141597263","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}
引用次数: 0
MOF-5 Fortified Fiber Optic Plasmonic Absorption-based Pb(II) Ion Sensor for Rapid Water Quality Monitoring 用于快速水质监测的 MOF-5 强化光纤质子吸收型铅(II)离子传感器
IF 8.131 2区 环境科学与生态学
Environmental Science: Nano Pub Date : 2024-07-11 DOI: 10.1039/d4en00197d
Swetha Menon, Sourav Dutta, Narayanan Madaboosi, V. V. R. Sai
{"title":"MOF-5 Fortified Fiber Optic Plasmonic Absorption-based Pb(II) Ion Sensor for Rapid Water Quality Monitoring","authors":"Swetha Menon, Sourav Dutta, Narayanan Madaboosi, V. V. R. Sai","doi":"10.1039/d4en00197d","DOIUrl":"https://doi.org/10.1039/d4en00197d","url":null,"abstract":"Precise detection of heavy metal ions in water is of paramount importance owing to its detrimental effects on human health, especially with spectroscopically silent ions such as lead ions (Pb(II)). This study demonstrates the design and development of a novel portable and field-deployable fiber optic plasmonic absorption-based chemical sensor (PACS) for Pb(II) ion detection using a metal-organic framework (MOF-5) as a highly selective chemoreceptor. MOF-5 was grown in situ over the tannic acid-capped gold nanoparticles (AuNP, 20 nm) of the plasmonic U-bent fiber optic sensor (U-FOS) probes. The Pb(II) ion binding to MOF-5 was detected and quantified as an increase in the plasmonic absorption of the light by AuNP due to significant refractive index changes at the AuNP surface. Besides an excellent selectivity (Pb(II) vs. 11 potential interfering metal ions at 1:50 ppm), these sensors manifest a detection limit down to 0.5 ppb (20 times below the maximum contaminant level of 10 ppb), a wide dynamic range (0.5 ppb to 50 ppm). The sensor was challenged with filtered sewage samples (neat and spiked with 10 ppb) yielded recovery rates within 91% to 105% with respect to the standard ICP-MS analysis. With the notable merits of a facile and scalable probe fabrication process, long shelf-life (at least 12 weeks moisture-free storage), and simpler instrumentation (only with an LED-photodetector pair), the PACS/MOF-5 platform is highly promising for water quality measurements on-site.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141584353","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}
引用次数: 0
Uptake and physiological impacts of nanoplastics in trees with divergent water use strategies 不同用水策略的树木对纳米塑料的吸收和生理影响
IF 8.131 2区 环境科学与生态学
Environmental Science: Nano Pub Date : 2024-07-11 DOI: 10.1039/d4en00286e
Maria Elvira Murazzi, Alice Pradel, Roman B. Schefer, Arthur Gessler, Denise M. Mitrano
{"title":"Uptake and physiological impacts of nanoplastics in trees with divergent water use strategies","authors":"Maria Elvira Murazzi, Alice Pradel, Roman B. Schefer, Arthur Gessler, Denise M. Mitrano","doi":"10.1039/d4en00286e","DOIUrl":"https://doi.org/10.1039/d4en00286e","url":null,"abstract":"Anthropogenic contaminants can place significant stress on vegetation, especially when they are taken up into plants. Plastic pollution, including nanoplastics (NPs), could be detrimental to tree functioning, by causing, for example, oxidative stress or reducing photosynthesis. While a number of studies have explored the capacity of plants to take up NPs, few have simultaneously assessed the functional damage due to particulate matter uptake. To quantify NPs uptake by tree roots and to determine whether this resulted in subsequent physiological damage, we exposed the roots of two tree species with different water use strategies in hydroponic cultures to two concentrations (10 mg L<small><sup>−1</sup></small> and 30 mg L<small><sup>−1</sup></small>) of model metal-doped polystyrene NPs. This approach allowed us to accurately quantify low concentrations of NPs in tissues using standard approaches for metal analysis. The two contrasting tree species included Norway spruce (<em>Picea abies</em> [L.] Karst), a water conservative tree, and wild service tree (<em>Sorbus torminalis</em> [L.] Crantz), an early successional tree with a rather water spending strategy. At both exposure concentrations and at each of the experimental time points (two and four weeks), NPs were highly associated and/or concentrated inside the tree roots. In both species, maximum concentrations were observed after 2 weeks in the roots of the high concentration (HC) treatment (spruce: 2512 ± 304 μg NPs per g DW (dry weight), wild service tree: 1190 ± 823 μg NPs per g DW). In the aboveground organs (stems and leaves or needles), concentrations were one to two orders of magnitude lower than in the roots. Despite relatively similar NPs concentrations in the tree aboveground organs across treatments, there were different temporal impacts on tree physiology of the given species. Photosynthetic efficiency was reduced faster (after 2 weeks of NPs exposure) and more intensively (by 28% in the HC treatment) in wild service trees compared to Norway spruce (<em>ca.</em> 10% reduction only after 4 weeks). Our study shows that both, evergreen coniferous as well as deciduous broadleaf tree species are negatively affected in their photosynthesis by NPs uptake and transport to aboveground organs. Given the likelihood of trees facing multiple, concurrent stressors from anthropogenic pollution and climate change, including the impact of NPs, it is crucial to consider the cumulative effects on vegetation in future.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141584465","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}
引用次数: 0
Self-cycled photocatalytic Fenton system and rapid degradation of organic pollutants over magnetic 3D MnS nanosheet/iron-nickel foam 自循环光催化 Fenton 系统和磁性 3D MnS 纳米片/铁-镍泡沫对有机污染物的快速降解
IF 8.131 2区 环境科学与生态学
Environmental Science: Nano Pub Date : 2024-07-11 DOI: 10.1039/d4en00452c
Xiaoqian Ma, Yu Liu, Yi Zhao, Xiaohong Chen, Junyang Leng, Anlong Zhang, Daomei Chen, Kai Xiong, Jiaqiang Wang
{"title":"Self-cycled photocatalytic Fenton system and rapid degradation of organic pollutants over magnetic 3D MnS nanosheet/iron-nickel foam","authors":"Xiaoqian Ma, Yu Liu, Yi Zhao, Xiaohong Chen, Junyang Leng, Anlong Zhang, Daomei Chen, Kai Xiong, Jiaqiang Wang","doi":"10.1039/d4en00452c","DOIUrl":"https://doi.org/10.1039/d4en00452c","url":null,"abstract":"The photocatalysis self-Fenton systems by coupling photocatalysis and Fenton technology overcome the limitations of conventional Fenton reactions by in-situ generation and activation of H2O2. While a considerable amount of iron sludge is still produced. In this study, we develop a novel self-cycled photocatalytic Fenton process for the degradation of organic pollutants via an iron-nickel foam-supported MnS nanosheet (MnS/INF). Without the external addition of both H2O2 and ferrous ions, MnS/INF 3D Z-scheme heterojunction exhibited an extremely high H2O2 production rate of 25.4 mM h-1 g-1 under visible light irradiation, which is 2119 times than those reported photocatalysis self-Fenton system in the literature. The photogenerated electrons of MnS/INF can participate in the Fe2+/Fe3+ cycle process to promote H2O2 activation, significantly enhancing the catalytic performance owing to the formation of a 3D Z-scheme heterojunction. DFT calculations indicate that MnS/INF can lower the energy barrier of *OOH formation and result in an enhanced photocatalytic activity of H2O2 production. Magnetic MnS/INF was easily recycled, remained very stable, and mitigated the extra undesirable Fe-containing sludge and only little iron sludge (0.43 mmol/L) is produced after nine cycles of reuse. Furthermore, a large (100 cm2) MnS/INF was used for an unassisted solar-driven in situ photocatalytic H2O2 production and rapid degradation of RhB with requirements for only water, oxygen and sunlight. In addition, MnS/INF also exhibited good performance in real wastewater containing fluoronitrobenzene from a factory (initial COD 2310 mg/L) and wastewater from sewage treatment station (initial COD 106 mg/L). This work may provide leverage to minimize iron sludge from the Fenton reaction's source.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141584519","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}
引用次数: 0
Synthesis of N-doped porous carbon derived from biomass waste for activating peroxymonosulfate in water decontamination: Mechanism insight and biotoxicity assessment 从生物质废弃物中合成掺杂 N 的多孔碳,用于活化水污染中的过硫酸盐:机理研究与生物毒性评估
IF 8.131 2区 环境科学与生态学
Environmental Science: Nano Pub Date : 2024-07-10 DOI: 10.1039/d4en00481g
Shun Ding, FANGYU FU, Huibin Niu, Jiaying Yan, Yanfen Fang, Xiang Liu
{"title":"Synthesis of N-doped porous carbon derived from biomass waste for activating peroxymonosulfate in water decontamination: Mechanism insight and biotoxicity assessment","authors":"Shun Ding, FANGYU FU, Huibin Niu, Jiaying Yan, Yanfen Fang, Xiang Liu","doi":"10.1039/d4en00481g","DOIUrl":"https://doi.org/10.1039/d4en00481g","url":null,"abstract":"N-doping is a widely used strategy for the synthesis of highly efficient carbon nanocatalysts, however, an in-depth understanding of the effect of nitrogen source on the intrinsic structure and catalytic performance is highly desired. Therefore, to kill two birds with one stone, a series of N-doped carbon nanomaterials were synthesized from the pyrolysis of biomass waste (dealkali lignin) and various nitrogen sources (including melamine, dicyandiamide, and urea). Even though N-doping nanocatalysts showed better catalytic activity than the HCNs (pyrolysis form only dealkali lignin) for sulfamethoxazole (SMX) degradation via peroxymonosulfate (PMS) activation, NCN-1 and NCN-2 presented contractive and small spherical structures when melamine and dicyandiamide with high nitrogen content were added, showing relatively low catalytic efficiency. NPCN derived from dealkali lignin and urea led to the formation of a porous cluster structure with abundant active species of graphitic C/N and C-OH, which showed the best catalytic performance for SMX degradation. Significantly, NPCN exhibited excellent universality, adaptability, and reusability. Moreover, the possible mechanism was proposed based on the quenching study, EPR analysis, electronic quenching experiment, DFT calculation, and HR-MS, confirming that e−, 1O2, •OH, SO4•−, and O2•− were the active species, of which 1O2 was the dominating one in NPCN/PMS system. In addition, the biotoxicity of SMX was evaluated by the ECOSAR analysis and germination tests of wheat seeds. This work provides how the nitrogen source would affect the microstructure-dependent catalytic activity of metal-free carbon nanocatalysts for water decontamination.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141566080","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}
引用次数: 0
Catalytic activity of Cu-cysteine coated on Ti3C2MXene toward peroxymonosulfate activation for carbamazepine degradation 涂覆在 Ti3C2MXene 上的半胱氨酸铜对过一硫酸活化降解卡马西平的催化活性
IF 8.131 2区 环境科学与生态学
Environmental Science: Nano Pub Date : 2024-07-10 DOI: 10.1039/d4en00342j
Pascaline Sanga, Haitham Saad Al-mashriqi, Jing Xiao, Jia Chen, Hongdeng Qiu
{"title":"Catalytic activity of Cu-cysteine coated on Ti3C2MXene toward peroxymonosulfate activation for carbamazepine degradation","authors":"Pascaline Sanga, Haitham Saad Al-mashriqi, Jing Xiao, Jia Chen, Hongdeng Qiu","doi":"10.1039/d4en00342j","DOIUrl":"https://doi.org/10.1039/d4en00342j","url":null,"abstract":"The growing prevalence of pharmaceutical pollutants in water bodies poses a significant threat to the enviromnent, underscoring the urgent need for more effective and sustainable methods for removing these pollutants. This study introduces a novel technique for degrading carbamazepine (CBZ), based on a peroxymonosulfate (PMS) oxidation system catalysed by a Copper-cysteine/Ti3C2MXene composite (Cu-cy/Ti3C2MXene), denoted as CCM. CCM was initially prepared by growing Cu-cy nanoparticles on MXene sheet to make Cu-cy/Ti3C2MXene. CCM was then utilized to activate PMS, facilitating the generation of reactive oxygen species necessary for decomposing CBZ. The CCM+PMS system demonstrated a remarkable 98.6% degradation rate of CBZ within 20 min, outperforming the pristine Cu-cy nanoparticles and Ti3C2MXene when applied in same conditions. Furthermore, to examine the vital contribution of reactive oxygen species in the degradation process, experiments focused on quenching reactions and electron paramagnetic resonance (EPR) analysis demonstrated that both radical species, including sulfate radicals (SO4•-) and hydroxyl radicals (•OH), and non-radical species such as singlet oxygen (1O2), were involved in the degradation of CBZ with non-radical species (1O2) exerting a predominant role. Notably, the synthesized material showed excellent reusability and stability in multiple cycles of CBZ degradation. These findings highlight the effectiveness of the CCM+PMS system in addressing water pollution issues caused by CBZ.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141566021","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}
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