Chemical Engineering Journal最新文献_第9页

Spider silk-inspired environmentally adaptive intelligent graphene artificial throat

IF 15.1 1区工程技术

Chemical Engineering Journal Pub Date : 2025-03-31 DOI: 10.1016/j.cej.2025.162177

Zijia Su, Liwei Liang, Zhifei Xie, Yi Yang, Lu-Qi Tao, Tian-Ling Ren

{"title":"Spider silk-inspired environmentally adaptive intelligent graphene artificial throat","authors":"Zijia Su, Liwei Liang, Zhifei Xie, Yi Yang, Lu-Qi Tao, Tian-Ling Ren","doi":"10.1016/j.cej.2025.162177","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162177","url":null,"abstract":"Sound, as one of nature’s most ubiquitous and efficient modes of interaction, faces a paradoxical challenge: it is highly susceptible to environmental noise interference while simultaneously capable of disturbing quiet environments. This dichotomy underscores the critical need for adaptive acoustic technologies. Here, we developed a spider silk-inspired graphene-artificial-throat (GAT) system capable of dynamically adjusting its sensitivity to ambient acoustic conditions. The GAT leverages mechanical strain modulation to operate in both high-sensitivity and low-sensitivity modes, enabling clear speech recognition in quiet environments and efficient noise filtering in noisy settings. The dynamic range (DR) of the device is calculated to be 8.12 dB, which refers to the sensitivity range of the device. This range ensures the device can adapt to and perform effectively under varying environmental conditions. The GAT achieved a speech recognition accuracy of 91.07 % under 80 dB of white noise. Furthermore, we integrated the GAT into a binaural auditory system for robots, where strain-tunable GATs were used for signal differentiation, enabling precise sound localization with an accuracy of 99.42 %. The proposed GAT offers a versatile solution for human communication and robotic auditory perception, providing robust performance in a wide range of real-world applications.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"225 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Membrane fouling behaviors of microplastic in coagulation-ultrafiltration process: Role of surface functional groups

IF 15.1 1区工程技术

Chemical Engineering Journal Pub Date : 2025-03-30 DOI: 10.1016/j.cej.2025.162141

Yue Shen, Tao Jian, Genying Yu, Hongjun Lin, Xiang Cai, Liguo Shen, Zengjian Zhao, Leihong Zhao, Meijia Zhang, Die Ling Zhao, Bisheng Li

{"title":"Membrane fouling behaviors of microplastic in coagulation-ultrafiltration process: Role of surface functional groups","authors":"Yue Shen, Tao Jian, Genying Yu, Hongjun Lin, Xiang Cai, Liguo Shen, Zengjian Zhao, Leihong Zhao, Meijia Zhang, Die Ling Zhao, Bisheng Li","doi":"10.1016/j.cej.2025.162141","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162141","url":null,"abstract":"Global water contamination by persistent microplastics (MPs) poses severe public health risks, yet the influences of MP surface properties on membrane fouling in coagulation-ultrafiltration (CUF) systems remain poorly understood. This study examines the impact of MP surface functional groups on membrane fouling behavior during the CUF process. Functionalized polystyrene (PS) with –COOH and –NH2 groups was employed to assess their effects on filtration performance and fouling mechanisms. Filtration flux test demonstrated that both PS-COOH and PS-NH2 effectively mitigate flux decline. PS-COOH significantly mitigates fouling by enhancing charge neutralization and flocculation with polymeric aluminum chloride (PAC), while PS-NH2 reduces fouling by providing additional binding sites for –COOH groups in sodium alginate (SA) and promoting the formation of larger aggregates through electrostatic interactions, resulting in the development of more substantial and stable flocs. Thermodynamic analysis further confirmed that PS-COOH exhibits a higher repulsion energy barrier (6.19 × 107 kT) than PS-NH2 (3.79 × 107 kT), effectively delaying the adhesion and accumulation of foulants on the membrane surface. Filtration model analysis showed that pore clogging dominated the early fouling stages, followed by cake filtration. MPs affected fouling layer compactness, leading to fouling progression reduction, particularly with PS-COOH. This study represents the first systematic exploration of how surface functional groups of MPs influence membrane fouling mechanisms in CUF systems. These findings offer novel strategies for optimizing CUF processes in microplastic-contaminated water treatment.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"72 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143736519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rational electrode design for balanced and enhanced ionic and electronic conduction in high-loading all-solid-state batteries

IF 15.1 1区工程技术

Chemical Engineering Journal Pub Date : 2025-03-30 DOI: 10.1016/j.cej.2025.162096

Yunho Lee, Jaecheol Choi, Seok Hun Kang, Young-Gi Lee, Joonwon Lim, Hyeong Min Jin, Ju Young Kim

{"title":"Rational electrode design for balanced and enhanced ionic and electronic conduction in high-loading all-solid-state batteries","authors":"Yunho Lee, Jaecheol Choi, Seok Hun Kang, Young-Gi Lee, Joonwon Lim, Hyeong Min Jin, Ju Young Kim","doi":"10.1016/j.cej.2025.162096","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162096","url":null,"abstract":"Balanced ionic and electronic conduction within the electrode is essential for efficient electrochemical reactions in battery systems. In particular, all-solid-state electrodes require more precise and sophisticated designs to optimize conduction due to the use of bulky solid electrolyte particles for lithium-ion transport, unlike liquid electrolytes that conformally wet solid components. In this context, the limited remaining space, apart from the active material particles, must be effectively utilized to achieve superior ionic and electronic conduction. Herein, we propose a straightforward composite electrode design in which carbon nanotubes with high electronic conductivity are directly coated onto the surface of cathode materials to address these challenges. While conventional composite electrodes with randomly mixed structures of carbon black and solid electrolytes suffer from transport interruptions between charge carriers, this design facilitates electronic conduction at the interface between the active material and the solid electrolyte domains. Consequently, each charge carrier is transported without significant interruption, resulting in higher ionic and electronic conduction compared to conventional composite electrodes. Moreover, the efficient utilization of the electro-conductive agent significantly reduces its required amount to as low as 0.07 wt% of the total electrode weight, offering additional design flexibility for active materials and increasing electrode density. Thanks to these advantages, all-solid-state electrodes with an ultrahigh loading of 153 mg/cm2 can achieve a capacity of 12.7 mAh/cm2, presenting a practically meaningful pathway toward realizing high-loading all-solid-state batteries.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"4 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143736510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In situ synthesis of VO2 containing high-valent vanadium via surface oxidation of V2C MXene for robust near-interface reactions in aqueous zinc-ion batteries

IF 15.1 1区工程技术

Chemical Engineering Journal Pub Date : 2025-03-30 DOI: 10.1016/j.cej.2025.162146

, Zhi-Hai Wu, Zi-Qing Yang, Yang-Xin Yu

{"title":"In situ synthesis of VO2 containing high-valent vanadium via surface oxidation of V2C MXene for robust near-interface reactions in aqueous zinc-ion batteries","authors":", Zhi-Hai Wu, Zi-Qing Yang, Yang-Xin Yu","doi":"10.1016/j.cej.2025.162146","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162146","url":null,"abstract":"Vanadium-based materials are promising candidates for cathodes in aqueous zinc-ion batteries (AZIBs), but balancing high capacity with long-term stability remains a challenge. High-valent vanadium enhances conductivity but is unstable, while low-valent vanadium improves stability but lacks sufficient conductivity and capacity. In this study, we improved the overall capacity and stability of the electrodes by in-situ growing VO2 containing high-valent vanadium on V2C to suppress structural degradation, and by dispersing the VO2/V2C heterostructure nanosheets onto carbon nanofibers (CNF) to reduce V2C restacking and expose more active sites. Density Functional Theory (DFT) calculations suggest that the interface of the VO2/V2C heterostructure optimizes electron cloud distribution, highlighting the role of V2C in enhancing the reaction kinetics of VO2. Furthermore, the coordination effect between V2C and VO2 enables stable near-interface reactions on V2C, further improving the electrochemical performance of the electrode. The optimized VO2/V2C@CNF-2 electrode achieves a discharge-specific capacity of 549 mAh g−1 at 0.1 A g−1 after 100 cycles and retains 300 mAh g−1 after 5000 cycles at 10 A g−1. These findings provide new insights into enhancing AZIB cathode electrochemical performance and expand the application potential of V2C in aqueous batteries.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"31 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143736979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanistic insights into peracetic acid activation by iron-biochar composites prepared at low and high temperature for enhanced contaminant degradation: Selective reactive species generation

IF 15.1 1区工程技术

Chemical Engineering Journal Pub Date : 2025-03-30 DOI: 10.1016/j.cej.2025.162165

Guilong Peng, Yuting Yan, Chengdu Qi, Junhua Chen, Xukun Meng, Lee Blaney, Wenwen Gong

{"title":"Mechanistic insights into peracetic acid activation by iron-biochar composites prepared at low and high temperature for enhanced contaminant degradation: Selective reactive species generation","authors":"Guilong Peng, Yuting Yan, Chengdu Qi, Junhua Chen, Xukun Meng, Lee Blaney, Wenwen Gong","doi":"10.1016/j.cej.2025.162165","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162165","url":null,"abstract":"Iron-based activation of peracetic acid (PAA) is an environmentally friendly and low-cost technology for degrading contaminants. In this study, iron-biochar (Fe-BC) composites were prepared at low temperature (Fe-BC-300) and high temperature (Fe-BC-800) and used to activate PAA to degrade acetaminophen (ACT). In the Fe-BC-300/PAA process, Fe(IV) was the dominant reactive species responsible for ACT degradation; in contrast, •OH and RO• (e.g., CH3C(O)O•) were the dominant reactive species in the Fe-BC-800/PAA system. To elucidate the contributions of each reactive species, a mixed probes strategy designed for heterogeneous PAA activation systems was deployed (for the first time) to simultaneously determine the steady-state concentrations of Fe(IV), •OH, and RO•. The reaction mechanisms were confirmed by treating a suite of organic contaminants with variable ionization potential by the Fe-BC-300/PAA and Fe-BC-800/PAA systems. The experimental results, in combination with density functional theory calculations, confirmed the aforementioned roles of Fe(IV), •OH, and RO• in Fe-BC/PAA processes. Overall, the new mechanistic insights from this study inform preparation of Fe-BC composites for selective generation of specific reactive species upon PAA activation.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"58 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143736416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sulfonic acid-functionalized spiropyran colorimetric gas-sensitive aerogel for real-time visual ammonia sensing

IF 15.1 1区工程技术

Chemical Engineering Journal Pub Date : 2025-03-30 DOI: 10.1016/j.cej.2025.162160

Yanghang Liu, Heyu Zhang, Yu Jiang, Siqi Zhang, Yunhe Li, Dan Yu, Wei Wang

{"title":"Sulfonic acid-functionalized spiropyran colorimetric gas-sensitive aerogel for real-time visual ammonia sensing","authors":"Yanghang Liu, Heyu Zhang, Yu Jiang, Siqi Zhang, Yunhe Li, Dan Yu, Wei Wang","doi":"10.1016/j.cej.2025.162160","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162160","url":null,"abstract":"With the increasing demand for ammonia (NH3) detection in environmental monitoring, industrial safety, and food freshness assessment, developing portable, cost-effective, and highly sensitive NH3 sensors remains a challenge. This study presents a smart colorimetric aerogel based on sulfonated spirocyclic pyran (SC-MPC aerogel) for real-time, highly sensitive, and visual NH3 detection. The aerogel exhibits significant color changes due to proton transfer reactions triggered by NH3 exposure and can recover to its initial state under acidic conditions. Experimental results demonstrate that the aerogel has a rapid response time of just 8 s, a detection limit as low as 1.79 ppm, and excellent repeatability with over 40 cycles of use. Additionally, it shows a high selectivity for NH3, with a linear response range from 3 to 150 ppm, and exhibits exceptional stability under variations in humidity and temperature. Density functional theory (DFT) calculations further confirm the proton transfer mechanism involved in the NH3 sensing process. This aerogel demonstrates broad application potential, particularly in seafood freshness detection, while also holding promise for use in environmental monitoring and industrial safety, providing a cost-effective and highly sensitive solution for ammonia detection.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"12 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143736517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bio-inspired core–shell dyeing and derived patterned fluorescent tough hydrogels for multiple information encryption

IF 15.1 1区工程技术

Chemical Engineering Journal Pub Date : 2025-03-30 DOI: 10.1016/j.cej.2025.162139

Huihui Shi, Jiaxin Shen, Lin Zhu, Mingrui Zhou, Binghui Li, Zijian Gao, Yunhong Liu, Zhen Li, Ji Zhou, Kuibo Yin, Meng Nie

{"title":"Bio-inspired core–shell dyeing and derived patterned fluorescent tough hydrogels for multiple information encryption","authors":"Huihui Shi, Jiaxin Shen, Lin Zhu, Mingrui Zhou, Binghui Li, Zijian Gao, Yunhong Liu, Zhen Li, Ji Zhou, Kuibo Yin, Meng Nie","doi":"10.1016/j.cej.2025.162139","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162139","url":null,"abstract":"Constructing advanced fluorescent anti-counterfeiting hydrogels is crucial for highly secure and powerful information encryption. However, lipophilic fluorescent molecules and accessible decryption condition make it challenging in fluorescent hydrogel fabrication and information validity. Herein, we draw an inspiration from the cellular mechanical response regulation to develop a universal swelling-deswelling strategy that embeds lipophilic fluorescent molecules into hydrophilic core–shell poly (stryrene-block-1-vinylpyrrolidone) (SP) and blocks most exogenous stimuli. Benefiting from reversible swelling behavior and rich hydrogen bond binding sites of SP, the proposed strategy could be expanded to multiple lipophilic dyes and prepared dyed SP is suitable for almost all hydrogels. Using lanthanide dyed SP as fluorescent units and dual network hydrogel as matrix, multiple anti-counterfeiting functions including nonvolatile, rewritable, and dual information storage and encryption, are realized by designing hydrogel architectures and regulating photo-responsive behaviors. It is believed that such research would inspire further studies on multifunctional hydrogel development for multi-level anti-counterfeiting and intelligent information encryption.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"183 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143736977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Acid etching V2O5 nanowires cathode for high-performance zinc-ion full batteries

IF 15.1 1区工程技术

Chemical Engineering Journal Pub Date : 2025-03-30 DOI: 10.1016/j.cej.2025.162148

Huan-zhang Wen, Aiqun Kong, Yun-fei Shen, Yun-qi Fan, Jian-jie Liu, Long Chen

{"title":"Acid etching V2O5 nanowires cathode for high-performance zinc-ion full batteries","authors":"Huan-zhang Wen, Aiqun Kong, Yun-fei Shen, Yun-qi Fan, Jian-jie Liu, Long Chen","doi":"10.1016/j.cej.2025.162148","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162148","url":null,"abstract":"Vanadium oxides are extensively utilized as cathode materials in aqueous zinc-ion batteries (AZIBs) due to the rich redox chemistry of vanadium, while their limited cyclability and sluggish diffusion kinetics impede the practical adoption. Herein, the structural engineering strategy via H2SO4 etching is proposed to modulate the morphology and electronic structure of V2O5 (termed as V2O5-H2SO4). Specifically, V2O5 etched H2SO4 features a staggered nanowire architecture and an increased V5+/V4+ ratio, contributing to improving structural stability and accelerating ion transport kinetics. The X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) spectroscopy reveal that the increased V5+ diminished Zn2+ diffusion barriers in V2O5-H2SO4, Modified the bonding architecture and furnish extra ion-diffusion channels and ample active sites, thus helping to elucidate the zinc storage mechanism and achieve the excellent electrochemical performance. V2O5-H2SO4 cathode exhibits an impressive energy output of 391.7 Wh kg−1 at 152.66 W kg−1. The assembled V2O5-H2SO4||CuZn2/In/InZn3@Zn full battery exhibits significantly augmented specific capacity of 588.4 mAh g−1 at 0.2 A g−1 and long-cycle stability. This research emphasizes the significance of acid etching on the structural engineering of AZIBs vanadium oxides cathode materials, providing a new approach for structural functional materials.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"183 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143736512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Polyaniline lamellated Na3V2(PO4)2O2F with fast kinetics toward high-performance sodium-ion batteries

IF 15.1 1区工程技术

Chemical Engineering Journal Pub Date : 2025-03-30 DOI: 10.1016/j.cej.2025.162163

Kaidi Gao, Qiao Hu, Guangming Han, Yu Xia, Jiaying Liao, Jianfeng Yao

{"title":"Polyaniline lamellated Na3V2(PO4)2O2F with fast kinetics toward high-performance sodium-ion batteries","authors":"Kaidi Gao, Qiao Hu, Guangming Han, Yu Xia, Jiaying Liao, Jianfeng Yao","doi":"10.1016/j.cej.2025.162163","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162163","url":null,"abstract":"The polyanion-type fluorophosphate Na3V2(PO4)2O2F (NVPOF) is a prospective cathode candidate for high-energy sodium-ion batteries (SIBs) because of its high voltage plateau, high theoretical specific capacity and three-dimensional sodium super-ionic conductor (NASICON) framework. However, the inherently low electronic conductivity and poor thermal stability of NVPOF pose challenges to its electrochemical properties and synthesis in SIBs. For the first time, using phenylamine-intercalated VOPO4·2H2O (AI-VOP) nanosheets as precursors, polyaniline lamellated Na3V2(PO4)2O2F particles (PA-NVPOF) are synthesized in a solvent mixture of ethylene glycol and deionized water (v/v = 1/1) as cathodes for high-performance SIBs, enabling an excellent reversible capacity of 129.5 mAh g−1 at 0.1C and a high-energy density of 478 Wh kg−1. Specifically, the crystalline H2O in VOPO4·2H2O (VOP) is extracted from the interlayer space by the intercalation of phenylamine molecules. After an in-situ polymerization of phenylamine between layers, PA-NVPOF with markedly enhanced electronic conductivity is produced at a relatively low temperature (180 °C). Ex-situ X-ray diffraction and electrochemical kinetics investigations reveal the reversible structural stability and fast Na+/electron transport rate of PA-NVPOF. This route, based on the phenylamine interaction between layers and an in-situ polymerization at a low temperature, provides valuable insight into the design of thermosensitive polyanionic cathodes for high-performance SIBs.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"36 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143736434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A mechanically tough and fluorescent double network hydrogel simultaneously featuring advanced information encryption and smart food monitoring

IF 15.1 1区工程技术

Chemical Engineering Journal Pub Date : 2025-03-30 DOI: 10.1016/j.cej.2025.162159

Haojie Qian, Xiaozhi Xu, Shiqing Huang, Xiaowen Xu

{"title":"A mechanically tough and fluorescent double network hydrogel simultaneously featuring advanced information encryption and smart food monitoring","authors":"Haojie Qian, Xiaozhi Xu, Shiqing Huang, Xiaowen Xu","doi":"10.1016/j.cej.2025.162159","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162159","url":null,"abstract":"Fluorescent hydrogels show promise for either information encryption or food freshness indication; however, combining both features in a hydrogel system with strong mechanics for addressing information leakage and structural damage during transport remains challenging. Herein, we developed a mechanically tough hydrogel through copolymerization of acrylamide with UV-responsive (spiropyran-linked acrylate) and alkaline-responsive (7-acryloxy-4-methylcoumarin) fluorescent monomers, using a sodium alginate-Ca2+ system. The resulting hydrogel exhibited remarkable mechanics, including a 3450 % breaking elongation, 290 kPa fracture stress, and 568 MJ/m3 toughness, capable of lifting 400 g—656 times its own weight—outperforming current fluorescent hydrogels. It also demonstrated anti-fatigue, and excellent tearing resistance, with a tearing energy of 14 kJ/m2. Its fluorescence could shift from red to blue under UV light depending on pH (acidic pH = 1, alkaline pH = 13). These properties enabled advanced anti-counterfeiting applications, such as multi-color information encryption, ionic printing, and QR codes. Notably, the hydrogels also effectively monitored beef and milk freshness, with correlation coefficients (R2) exceeding 0.992 between TVB-N and ΔE for beef and 0.995 between acidity and ΔE for milk, surpassing existing hydrogel indicators with R2 < 0.90. Overall, this strategy may inspire novel, sustainable fluorescent materials for anti-counterfeiting, smart food tags, and visual sensing systems.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"440 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143736415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0