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Toward Flexible and Omnidirectional Self-powered Near-Ultraviolet Photodetection by Constructing Mixed-dimensional Nanobelt/Nanosheet Heterojunction of CdS/PbI2
IF 6.7 3区 材料科学
Nanoscale Pub Date : 2025-04-09 DOI: 10.1039/d5nr00712g
Junchen Wan, Siying Gao, Yujie Xu, Zixu Sa, Guangcan Wang, Xiaoyan Du, Mingsheng Xu, Yanxue Yin, Zai-xing Yang
{"title":"Toward Flexible and Omnidirectional Self-powered Near-Ultraviolet Photodetection by Constructing Mixed-dimensional Nanobelt/Nanosheet Heterojunction of CdS/PbI2","authors":"Junchen Wan, Siying Gao, Yujie Xu, Zixu Sa, Guangcan Wang, Xiaoyan Du, Mingsheng Xu, Yanxue Yin, Zai-xing Yang","doi":"10.1039/d5nr00712g","DOIUrl":"https://doi.org/10.1039/d5nr00712g","url":null,"abstract":"With the scaling down and low-power consumption driven by the growing demand in Internet of things and wearable devices, there is an increasing need for miniaturized, self-powered flexible optoelectronics with the ability of omnidirectional photodetection. In this work, the mixed-dimensional heterojunction near-ultraviolet photodetector of CdS nanobelt/PbI2 nanosheet is prepared by chemical vapor deposition and liquid-phase growth methods. Importantly, the as-fabricated self-powered near-ultraviolet photodetector displays a low Idark of 7×10-14 A, high Ilight/Idark ratio of 2.06×103, fast response times of 581 μs/581 μs and exceptional responsivity and detectivity of 3446.04 mA·W-1 and 9.05×109 Jones profiting from the built-in field. In addition, the flexible near-ultraviolet photodetector exhibits impressive omnidirectional photodetection and robust bending endurance. All the results reveal the technological potency of the mixed-dimensional photodetector for next-generation high-performance near-ultraviolet optoelectronics.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"36 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143806327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sodiophilic Au-diamane Polypropylene Separators Enabled Dendrite-Free Sodium Metal Batteries
IF 6.7 3区 材料科学
Nanoscale Pub Date : 2025-04-09 DOI: 10.1039/d5nr00743g
Gang Zhi, Zhanwei Hu, Gaojie Zhou, Zhuangfei Zhang, Hui Wang, Dezhi Kong, Tingting Xu, Xinjian Li, Ye Wang
{"title":"Sodiophilic Au-diamane Polypropylene Separators Enabled Dendrite-Free Sodium Metal Batteries","authors":"Gang Zhi, Zhanwei Hu, Gaojie Zhou, Zhuangfei Zhang, Hui Wang, Dezhi Kong, Tingting Xu, Xinjian Li, Ye Wang","doi":"10.1039/d5nr00743g","DOIUrl":"https://doi.org/10.1039/d5nr00743g","url":null,"abstract":"Sodium metal is considered as a promising anode material for sodium metal batteries (SMBs) owing to its high theoretical specific capacity and low electrochemical potential. Nevertheless, its practical application is hindered by the challenge of dendrite formation. To address this issue, a separator modification strategy was adapted to enhance the performance of sodium metal anodes (SMAs) by using Au nanoparticle-decorated two-dimensional diamane on a commercial polypropylene substrate (Au-diamane/PP) separator. The sodiophilic Au-diamane/PP separator facilitates improved Na⁺ ion diffusion kinetics and induces a dendrite-free deposition morphology, effectively suppressing dendrite growth. The dendrite-free deposition behavior was systematically characterized using in-situ optical microscopy and ex-situ scanning electron microscopy. Symmetric Na||Na cell incorporating the Au-diamane/PP separator exhibits exceptional cycling stability, maintaining operation for more than 2100 h at 2 mA cm-2 with 1 mAh cm-2. The sodiophilicity is originated from the in-situ formed AuNa2 alloy formed on the surface of diamane during the discharging process. Additionally, a full cell configuration with a Na3V2(PO4)3@C cathode, Au-diamane/PP separator, and Na metal anode delivers a high reversible capacity of 88.4 mAh g-1 more than 300 cycles. Our work underscores the potential of the Au-diamane/PP separator in advancing the development of SMBs with extended cycle life and enhanced performance.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"183 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143806319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Polymer Additives in Liquid Electrolyte for Advanced lithium Batteries
IF 6.7 3区 材料科学
Nanoscale Pub Date : 2025-04-09 DOI: 10.1039/d5nr00470e
Kefeng Wang, Man Zhang, Jingxiao Ren, Wei Wei, Jianwei Nai
{"title":"Polymer Additives in Liquid Electrolyte for Advanced lithium Batteries","authors":"Kefeng Wang, Man Zhang, Jingxiao Ren, Wei Wei, Jianwei Nai","doi":"10.1039/d5nr00470e","DOIUrl":"https://doi.org/10.1039/d5nr00470e","url":null,"abstract":"Compared to traditional energy storage devices, lithium-ion batteries (LIBs)have the advantages of high energy density, good cycling performance, and low self discharge rate. Therefore, LIBs have been widely used as the main energy storage devices in various industries. As the blood of the battery, electrolyte plays a key role in ion transport, formation of interface layer, protection of electrode materials, etc. The commonly investigated electrolytes include liquid electrolyte, gel electrolyte, solid or quasi-solid electrolyte. Liquid electrolytes have higher ionic conductivity, which is more conducive to the transport of lithium ions. Therefore, batteries based on liquid electrolytes often exhibit better electrochemical performance. In liquid electrolyte, additive is also an indispensable component to ensure the high efficiency of the electrolyte, which plays an important role in regulating the solvation structure of lithium ions, the formation of solid-electrolyte interface layer, improving the safety performance of batteries, and maintaining operability under extreme conditions (such as low temperature). Unlike previous reviews focused on small molecule additives, this review herein mainly reviews the application of polymer additives in liquid lithium batteries. Firstly, the basic composition of liquid electrolytes used in lithium batteries is outlined and the functional characteristics of each component are summarized. Then, the research progress of polymers as additives in liquid lithium batteries in recent years were introduced in detail. According to the role of additives, the involved polymer additives are divided into five categories: molecular crowding agents, film-forming agents, HF scavengers, antifreeze agents, and flame retardants. A detailed explanation of the mechanisms related to the efficacy of polymers as additives was also provided. Finally, we present some perspectives on the limitations and future development trends of polymers as additives in liquid lithium batteries and other devices.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"28 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143806330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced photocatalytic H2 generation and Cr(VI) reduction by a sheet-on-sheet Cd(OH)2/CdS nanocomposite
IF 6.7 3区 材料科学
Nanoscale Pub Date : 2025-04-09 DOI: 10.1039/d5nr00215j
Wei Zhao, Yuxiang Yang, Yanbin Li, Yimin Liu, Yuezhou Wei, Xinpeng Wang, Deqian Zeng
{"title":"Enhanced photocatalytic H2 generation and Cr(VI) reduction by a sheet-on-sheet Cd(OH)2/CdS nanocomposite","authors":"Wei Zhao, Yuxiang Yang, Yanbin Li, Yimin Liu, Yuezhou Wei, Xinpeng Wang, Deqian Zeng","doi":"10.1039/d5nr00215j","DOIUrl":"https://doi.org/10.1039/d5nr00215j","url":null,"abstract":"The advancement of efficient photocatalysts is essential for tackling global energy and environmental issues. In this work, a unique sheet-on-sheet Cd(OH)2/CdS photocatalyst was synthesized via a facile solution strategy, demonstrating significantly improved photocatalytic performance for H2 generation and Cr(VI) reduction. The optimal 5% Cd(OH)2/CdS obtained an impressive H2 production rate of 3475 μmol·g-1·h-1 under visible light, marking a 6.3 times increase compared to CdS. Additionally, the kinetics of Cr(VI) reduction were markedly accelerated, with a rate constant of 0.2803 min-1, representing a 5.7 times improvement over pure CdS. Moreover, the 2D/2D Cd(OH)2/CdS photocatalyst exhibited exceptional stability, maintaining high photocatalytic activity over multiple reaction cycles. Experimental findings and DFT calculations revealed the charge transfer mechanism between CdS nanosheets and Cd(OH)2 cocatalyst. This work provides insights into designing high-performance CdS-based nanophotocatalysts for water splitting and environmental remediation.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"38 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143806324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Graphene-based materials are not skin sensitizers: adoption of the in chemico/in vitro OECD test guidelines
IF 6.7 3区 材料科学
Nanoscale Pub Date : 2025-04-09 DOI: 10.1039/d5nr00307e
Michela Carlin, Marc Morant-Giner, Marina Garrido, Silvio Sosa, Alberto Bianco, Aurelia Tubaro, Maurizio Prato, Marco Pelin
{"title":"Graphene-based materials are not skin sensitizers: adoption of the in chemico/in vitro OECD test guidelines","authors":"Michela Carlin, Marc Morant-Giner, Marina Garrido, Silvio Sosa, Alberto Bianco, Aurelia Tubaro, Maurizio Prato, Marco Pelin","doi":"10.1039/d5nr00307e","DOIUrl":"https://doi.org/10.1039/d5nr00307e","url":null,"abstract":"The boost in the market size of graphene-based materials (GBMs) requires a careful evaluation of their impact on human health, acquiring robust and reliable data, also suitable for regulatory purposes. Considering cutaneous contact as one of the most relevant GBM exposure routes, this study is focused on skin sensitization, aimed at assessing the possibility to adopt the three <em>in chemico</em>/<em>in vitro</em> test guidelines (TGs) defined by the Organization for Economic Cooperation and Development (442C, D and E) to predict the first three phases of the skin sensitization adverse outcome pathway. Being originally validated for chemicals, modifications allowing their adoption for GBMs were evaluated. TG 442C was found to be not suitable for testing GBMs due to their reactivity, leading to possible misclassifications. In contrast, TG 442D and E can generally be applied for GBMs. However, protocol adjustments were required to assess cell viability reducing interferences for TG 442D, whereas caution should be exercised regarding dose-finding selection and GBM dispersion stability for TG 442E. When applying these modifications, GBMs were found to be unable to activate keratinocytes and promote dendritic cell differentiation, so they can be considered non-sensitizers. Overall, these results significantly contribute to understanding the safety profiles of GBMs and to improve testing methodologies to obtain reliable toxicological data.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"23 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143806320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Covalent organic framework encapsulated multi-walled carbon nanotubes for ultrasensitive electrochemical determination of lead ions in water and e-cigarette samples
IF 6.7 3区 材料科学
Nanoscale Pub Date : 2025-04-08 DOI: 10.1039/d4nr04871g
Hao Zhang, Hao Cheng, Dan Chen, Chunqiong Wang, Jingtao Mao, Zhihua Yang, Wen-Tong Chen, Lijun Li, Guangzhi Hu
{"title":"Covalent organic framework encapsulated multi-walled carbon nanotubes for ultrasensitive electrochemical determination of lead ions in water and e-cigarette samples","authors":"Hao Zhang, Hao Cheng, Dan Chen, Chunqiong Wang, Jingtao Mao, Zhihua Yang, Wen-Tong Chen, Lijun Li, Guangzhi Hu","doi":"10.1039/d4nr04871g","DOIUrl":"https://doi.org/10.1039/d4nr04871g","url":null,"abstract":"Trace amounts of lead ions present in aqueous solutions pose significant health risks to humans. Therefore, it is crucial to develop a sensor capable of rapidly detecting trace amounts of Pb(<small>II</small>). We developed a material utilising covalent organic frameworks encapsulating multi-walled carbon nanotubes (Tp-Bpy-COF@MWCNTs). The physicochemical properties of Tp-Bpy-COF@MWCNTs were analysed using transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR), confirming the successful encapsulation of MWCNTs by the COF. Tp-Bpy-COF@MWCNTs exhibited excellent conductivity and a porous structure. Using the Tp-Bpy-COF@MWCNT sensor for Pb(<small>II</small>) detection, the detection limit reached 0.0749 μg L<small><sup>−1</sup></small>, demonstrating higher sensitivity at 0.221 μA μM<small><sup>−1</sup></small> cm<small><sup>2</sup></small> compared to existing technologies. Additionally, the sensor showed good recovery and repeatability for detecting Pb(<small>II</small>) in actual water samples, indicating its potential for Pb(<small>II</small>) detection applications.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"37 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143797942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Material selection, preparation, driving and applications of light-driven micro-nano motor: a review
IF 6.7 3区 材料科学
Nanoscale Pub Date : 2025-04-07 DOI: 10.1039/d4nr05202a
lingcong He, Tao He, Yonghui Yang, Xuebo Chen
{"title":"Material selection, preparation, driving and applications of light-driven micro-nano motor: a review","authors":"lingcong He, Tao He, Yonghui Yang, Xuebo Chen","doi":"10.1039/d4nr05202a","DOIUrl":"https://doi.org/10.1039/d4nr05202a","url":null,"abstract":"As an external energy stimulus, light possesses the advantageous qualities of being reversible, wireless and remotely maneuverable, while driving the motion of the micro and nano motors. Despite the extensive publication of articles on light-driven micro- and nano-motors (LDMNMs) over the past two decades, a review that addresses LDMNMs in general, from material selection, design, preparation, driving to applications, remains scarce. Therefore, it is necessary to highlight the superiority of light as a stimulating energy source for driving MNMs, as well as to promote the continuous development of LDMNMs and give newcomers a more basic and comprehensive knowledge in this field. This present review focuses on advanced preparation methods for LDNMNs, and provides a comprehensive comparison of the advantages and limitations of various techniques. In addition, general design strategies for building asymmetric fields around LDMNMs are introduced, as well as a variety of photoactive materials, including photocatalytic, photothermal, and photoinduced isomerization materials. The following section will describe in detail the existing propulsive mechanisms and kinematic behaviours of LDMNMs, involving photocatalytic oxidation, photothermal effects and photo-induced isomerization. The principles of the various drive mechanisms are also analysed in detail and their merits and shortcomings summarized. Finally, following a comprehensive review of the potential applications in biomedicine, environmental remediation and other fields, further perspectives on future developments are presented with a view to overcoming key challenges","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"16 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143790109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Inspiration of Plant-Related Adhesion for Plant Wearable Sensor Interface Design
IF 6.7 3区 材料科学
Nanoscale Pub Date : 2025-04-07 DOI: 10.1039/d5nr00359h
Peicheng Teng, Yinmin Cai, Xinxin Liu, Yulu Tuo, Shihao Wu, Qiannian Wang, Yiheng Li, Feilong Zhang, Shutao Wang
{"title":"Inspiration of Plant-Related Adhesion for Plant Wearable Sensor Interface Design","authors":"Peicheng Teng, Yinmin Cai, Xinxin Liu, Yulu Tuo, Shihao Wu, Qiannian Wang, Yiheng Li, Feilong Zhang, Shutao Wang","doi":"10.1039/d5nr00359h","DOIUrl":"https://doi.org/10.1039/d5nr00359h","url":null,"abstract":"Wearable flexible devices for plant health monitoring hold promising prospects for encompassing the deep informatization and intellectualization of traditional agriculture and paving new research directions in plant physiology within botany. High-quality collection or release of in-situ signals constitutes a significant advantage of plant wearable devices, benefiting from the interface of devices and plants with excellent adaptability and conformability. However, naturally growing plant surfaces often possess anti-adhesive structures such as waxy layers and microhairs. Therefore, interface adhesion between devices and plants is crucial. In nature, the surface of plants is commonly observed to be attached by other organisms, and the adhesive wisdom embedded in these interactions holds promising potential to inspire the design of future wearable devices. In this review, we start with the intriguing phenomenon of many plant surfaces in nature being attached or adhered by other organisms, employing biomimetic thinking to summarize and extract various biomimetic adhesion mechanisms. Furthermore, by combining the designs of adhesive layers involved in plant devices reported in recent literature, we further analyze and summarize the interfacial adhesion between plants and devices, aiming to provide readers with diversified strategies. Finally, we conclude and outlook the new demands and future development directions of interface adhesion between plants and wearable devices.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"21 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143790112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Substitutional Mo Doping in Ta₃N₅ Photoanode: Mitigating Native Defects Engineering and Enhancing Water Splitting performance
IF 6.7 3区 材料科学
Nanoscale Pub Date : 2025-04-07 DOI: 10.1039/d4nr05198j
Hameed Ullah, Altaf Ur Rahman, Ariadne Köche, Carlos F. O. Graeff, Marcus Vinícius Castegnaro, Marcos Jose Leite Santos, Sherdil Khan
{"title":"Substitutional Mo Doping in Ta₃N₅ Photoanode: Mitigating Native Defects Engineering and Enhancing Water Splitting performance","authors":"Hameed Ullah, Altaf Ur Rahman, Ariadne Köche, Carlos F. O. Graeff, Marcus Vinícius Castegnaro, Marcos Jose Leite Santos, Sherdil Khan","doi":"10.1039/d4nr05198j","DOIUrl":"https://doi.org/10.1039/d4nr05198j","url":null,"abstract":"Ta3N5, with its 2.1 eV bandgap and favorable band edge positions, is a promising compound for solar water splitting. However, its performance is limited by defective states introduced during high temperature nitridation, particularly those based on reduced Ta species that act as electron recombination centers and can pin the Fermi level. Increasing electron density to extend the conduction band may suppress the formation of these states. Here we introduce combined theoretical and experimental study on Mo doping in Ta3N5, aiming to inhibit structural defects and enhance photoelectrochemical activity. Theoretical calculations reveal that Mo doping in Ta3N5 not only decreases the bandgap but also transforms the material from an indirect to a direct bandgap semiconductor. This transformation is attributed to the ability of Mo4+ ions, with comparable ionic radii and oxidation states for substitutional doping. This substitution introduces neutralizing acceptor states, effectively mitigating the formation of reduced Ta3+/Ta4+ states and nitrogen vacancies. As a result, charge carrier transport is enhanced, and recombination is suppressed. Additionally, the refractive index increases from 2.65 to 2.89 upon Mo doping, demonstrating improved optical performance for photoelectrochemical applications. Experimental results demonstrate a 4.3-fold enhancement in photoelectrochemical activity, alongside a 150-mV cathodic shift in the onset potential with substitutional Mo doping in Ta₃N₅. Moreover, the substitutional Mo doping does not induce lattice strain. These findings suggest that precise Mo doping in Ta₃N₅ has the potential to drive the development of innovative photoelectrochemical systems for practical solar fuel applications.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"16 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143790108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Regulation of phenol oxidation into polymeric derivatives ready for flocculation by polyaluminum chloride
IF 6.7 3区 材料科学
Nanoscale Pub Date : 2025-04-07 DOI: 10.1039/d5nr00251f
YI ZHANG, Kun-Lin Yang, Liangcan He, Shaoqin Liu
{"title":"Regulation of phenol oxidation into polymeric derivatives ready for flocculation by polyaluminum chloride","authors":"YI ZHANG, Kun-Lin Yang, Liangcan He, Shaoqin Liu","doi":"10.1039/d5nr00251f","DOIUrl":"https://doi.org/10.1039/d5nr00251f","url":null,"abstract":"Phenol, a toxic compound commonly found in wastewater, can be removed by iron-tetraamidomacrocyclic ligand (Fe-TAML) and H₂O₂. However, it incurs high costs for Fe-TAML and H₂O₂, while treated water retains high chemical oxygen demand (COD) and CO₂ emissions. To address these challenges, this study proposes converting phenol into polymeric derivatives followed by flocculation. Mass spectrometry (MS) reveals that phenol polymerization precedes polyphenol oxidation in the reaction, with slower reactions favoring phenol polymerization over polyphenol oxidation. It further demonstrates that reducing Fe-TAML dosage can slow down the reaction, thereby increasing the formation of polymeric derivatives at pH 10. Subsequent flocculation with polyaluminum chloride (PAC) effectively precipitates these products. When phenol concentration increases from 100 to 2500 ppm (mass ratio of H₂O₂: phenol: PAC = 10: 10: 1), COD rises from 10% to 19%, while CO₂ emissions decrease by over 45%. Meanwhile, the cost is reduced from 4.616 to3.416 per kg of phenol, as the Fe-TAML/phenol mass ratio decreases from 0.08% to 0.056%. Overall, this strategy is more cost-effective than conventional methods, requiring less Fe-TAML and H₂O₂ while significantly reducing COD and CO₂ emissions.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"42 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143790110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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