Chemical Engineering Journal最新文献_第7页

High-efficient separation mechanism of Co/Mo/V system by ethanolamine-induced phosphonic acid extractants 乙醇胺诱导膦酸萃取剂高效分离Co/Mo/V体系的机理

IF 15.1 1区工程技术

Chemical Engineering Journal Pub Date : 2025-05-29 DOI: 10.1016/j.cej.2025.164242

Hongtao Liu, Jiawei Wen, Lei Cao, Junlian Wang, Xin Wang, Guoyong Huang, Shengming Xu

{"title":"High-efficient separation mechanism of Co/Mo/V system by ethanolamine-induced phosphonic acid extractants","authors":"Hongtao Liu, Jiawei Wen, Lei Cao, Junlian Wang, Xin Wang, Guoyong Huang, Shengming Xu","doi":"10.1016/j.cej.2025.164242","DOIUrl":"https://doi.org/10.1016/j.cej.2025.164242","url":null,"abstract":"Conventional phosphonic acid extractants such as bis (2-ethylhexyl) phosphate (P204) have only been used for cobalt extraction and perform poor separation efficiency. In this work, we propose a route to synergistically extract and separate Co, Mo, and V from spent hydrogenation catalysts by utilizing the modulating effect of ethanolamine (MEA) on phosphonic acid-based extractants, which eliminates the need for saponification and acidification of the extractants. The extraction mechanism of V, Co and Mo have been explained detailedly. By performing quantum chemical calculations on the surface properties of various amines, their metal extraction effects were predicted and validated using machine learning, laying the foundation for the design of synergistic extractants. The Co/Mo/V selective separation process was finally built with the aim of extracting cobalt first in the form of Co(RNH2)2A2. At a P204 concentration of 25 %, MEA addition of 5 %, stirring time of 10 min, stirring rate of 400 rpm, the combined recoveries of the three metals Co, V and Mo reached 94.56 %, 85.60 % and 88.81 %, the separation factors βCo/Mo and βCo/V could be increased up to 44748.77 and 1174.04, respectively. It was also demonstrated that the extractant was also suitable for the selective extraction of Ni2+. This work provided fundamental research for the development of high-performance extraction systems.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"16 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177034","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

Synthesis of Zn quantum dots on carbon cloth by liquid-phase laser scanning ablation for Li metal anodes 液相激光扫描烧蚀法制备碳布上锌量子点的研究

IF 15.1 1区工程技术

Chemical Engineering Journal Pub Date : 2025-05-29 DOI: 10.1016/j.cej.2025.164250

Linyu Yuan, Yingbin Wu, Wenping Sun, Yu Hui

引用次数: 0

Enhanced phase-transfer kinetics achieved by atomic iron catalysts on hard carbon toward low-temperature sodium-ion batteries 硬碳原子铁催化剂对低温钠离子电池的强化相转移动力学研究

IF 15.1 1区工程技术

Chemical Engineering Journal Pub Date : 2025-05-29 DOI: 10.1016/j.cej.2025.164268

Xinyi Qian, Ziling Wu, Jianan Gu, Yanli Wang, Xiaomin Cheng, Jing Zhang, Hongzhen Lin, Jian Wang, Liang Zhan, Yongzheng Zhang

{"title":"Enhanced phase-transfer kinetics achieved by atomic iron catalysts on hard carbon toward low-temperature sodium-ion batteries","authors":"Xinyi Qian, Ziling Wu, Jianan Gu, Yanli Wang, Xiaomin Cheng, Jing Zhang, Hongzhen Lin, Jian Wang, Liang Zhan, Yongzheng Zhang","doi":"10.1016/j.cej.2025.164268","DOIUrl":"https://doi.org/10.1016/j.cej.2025.164268","url":null,"abstract":"Hard carbons with desirable pore morphologies are the most promising anode materials for sodium-ion batteries, but experience undesirable cycling stability and depressed capacity owing to sluggish reaction kinetics of sodium-related species through or across the carbon layer. Herein, based on closed pore morphology engineering using carbon dioxide physical activation method, the hard carbon composite (SAFe@HC) was prepared by coating a polydopamine capping layer with uniformly distributed iron single atoms on the closed-pore-rich hard carbon, where the introduction SAFe help to expand the layer spacing distance, providing additional channels for solvated Na+ diffusion. It is innovatively proposed that SAFe catalysts provide abundant active catalytic sites for accelerating the interfacial desolvation and the phase-transfer kinetics of Na+ is lowered by decreasing the sodium ion transport energy barrier, as confirmed by theoretical simulation and various electrochemical demonstration. In addition, the closed pore morphology also enhances the surface area and adsorbs more sodium ions. As a result, the SAFe@HC electrode exhibits a high reversible capacity of 340.7 mAh g−1 and a remarkable rate capacity up to 306.2 mAh g−1 and a high capacity-retention of 96.0 % after 500 cycles at 5C. Decreasing the environmental temperature to 0 °C, an excellent robust electrochemical performance of 172.2 mAh g−1 at 5C, offering promising avenues of single atomic catalysts achieving high-rate hard carbon electrode for sodium-ion batteries.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"37 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177069","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

AuNPs/C-CNF/PVA hydrogel SERS sensor for comprehensive detection of antitumor drug separation and enrichment AuNPs/C-CNF/PVA水凝胶SERS传感器用于抗肿瘤药物分离富集的综合检测

IF 15.1 1区工程技术

Chemical Engineering Journal Pub Date : 2025-05-29 DOI: 10.1016/j.cej.2025.164282

Bohan Zhang, Jinglei Yang, Qiaojun Jiang, Ruping Zheng, Liting Qiu, Jingxin Chen, Ruiyun You, Zixing Yan, Yudong Lu

{"title":"AuNPs/C-CNF/PVA hydrogel SERS sensor for comprehensive detection of antitumor drug separation and enrichment","authors":"Bohan Zhang, Jinglei Yang, Qiaojun Jiang, Ruping Zheng, Liting Qiu, Jingxin Chen, Ruiyun You, Zixing Yan, Yudong Lu","doi":"10.1016/j.cej.2025.164282","DOIUrl":"https://doi.org/10.1016/j.cej.2025.164282","url":null,"abstract":"In clinical settings, there is a significant demand for the monitoring of therapeutic drugs. Surface-enhanced Raman spectroscopy (SERS) has shown considerable potential in the field of drug analysis. Designing SERS sensors with high sensitivity, strong stability, excellent reproducibility is a challenging and fascinating goal in the field of chemical measurement. In this study, a simple and portable AuNPs/C-CNF/PVA hydrogel SERS sensor was developed, composed of gold nanoparticles (AuNPs), carboxylated cellulose nanofibers (C-CNF) and polyvinyl alcohol (PVA). Due to the “screening” effect of the hydrogel network, it is capable of separating hydrophobic molecules from macromolecules and enabling the enrichment of hydrophilic small molecules. When used to analyze 6-thioguanine (6-TG) and methylene blue (MB) in plasma, the AuNPs/C-CNF/PVA hydrogel SERS sensor showed limit of detection (LOD) as low as 7.9 × 10−8 M for 6-TG and 3.3 × 10−9 M for MB. Based on this technology, in blood spiking experiments using clinical samples, the recovery rate for 6-TG ranged from 99.16 % to 103.51 %, while the recovery rate for MB ranged from 93.13 % to 101.70 %. Therefore, the AuNPs/C-CNF/PVA hydrogel SERS sensor enables ultra-sensitive, integrated detection of drugs in plasma through separation and enrichment, without the need for complex pretreatment steps. This approach holds great promise for application in clinical therapeutic drug monitoring.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"48 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177070","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

Bamboo shoot inspired ultra-high conical porous evaporator for desalination of seawater with high salinity 竹笋启发的超高锥形多孔蒸发器用于高盐度海水的淡化

IF 15.1 1区工程技术

Chemical Engineering Journal Pub Date : 2025-05-29 DOI: 10.1016/j.cej.2025.164253

Mingzhu Xie, Zicheng Qian, Jiyuan Yu, Xiaolong Wang, Yinfeng Li, Ziheng Zhan, Xiaowei Wang, Yong Shuai, Huaduo Gu, Zhaolong Wang

{"title":"Bamboo shoot inspired ultra-high conical porous evaporator for desalination of seawater with high salinity","authors":"Mingzhu Xie, Zicheng Qian, Jiyuan Yu, Xiaolong Wang, Yinfeng Li, Ziheng Zhan, Xiaowei Wang, Yong Shuai, Huaduo Gu, Zhaolong Wang","doi":"10.1016/j.cej.2025.164253","DOIUrl":"https://doi.org/10.1016/j.cej.2025.164253","url":null,"abstract":"Solar-driven seawater evaporation is sustainable for freshwater but limited by water sources, wastes tolerance, and durability. Here, we propose a bamboo shoot inspired conical porous evaporation made of multiwall carbon nanotube-based composite materials, which demonstrates ultra-high-water transportation, high evaporation efficiency and salt-rejecting properties under high salinity and contaminated conditions. Its bioinspired microchannels’ capillary effect can drive liquid up to 126.0 mm, offering continuous water supply for evaporation and reducing liquid surface pressure, thus increasing evaporation efficiency with a capacity up to 2.54 kg m-2h−1. Meanwhile, the three-dimensional structure generates a temperature gradient, which induces Marangoni convection and facilitates the flow of saline water from high-concentration areas to low-concentration areas. This convection and capillary fluid replenishment work together to maintain salt concentration balance, enabling long-term seawater desalination over 200 h in 20 wt% saline water without cleaning.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"5 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177020","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

Transfer of laser induced graphene onto the surface of cotton fabric: An efficient electrode for triboelectric nanogenerator 激光诱导石墨烯在棉织物表面的转移：摩擦电纳米发电机的高效电极

IF 15.1 1区工程技术

Chemical Engineering Journal Pub Date : 2025-05-29 DOI: 10.1016/j.cej.2025.164270

Tapas Kamilya, Doohyun Han, Hyosik Park, Sima Roy, Yong-Seok Lee, Mallappa Mahanthappa, Mohd Afzal, Ju-Hyuck Lee, Soongeun Kwon, Jinhyoung Park

{"title":"Transfer of laser induced graphene onto the surface of cotton fabric: An efficient electrode for triboelectric nanogenerator","authors":"Tapas Kamilya, Doohyun Han, Hyosik Park, Sima Roy, Yong-Seok Lee, Mallappa Mahanthappa, Mohd Afzal, Ju-Hyuck Lee, Soongeun Kwon, Jinhyoung Park","doi":"10.1016/j.cej.2025.164270","DOIUrl":"https://doi.org/10.1016/j.cej.2025.164270","url":null,"abstract":"An electrode in triboelectric nanogenerator (TENG) plays a pivotal role in developing efficient and ultrasensitive devices. However, it has received relatively little attention from researchers, whereas numerous studies on TENG to date have primarily focused on device engineering, material selection, and efficiency improvements. Laser-induced graphene (LIG) demonstrates superior ability to collect charges generated through triboelectrification in TENGs. This article presents a successful fabrication of highly crystalline, conducting and sp2-hybridised LIG on a polyimide (PI) surface, which was subsequently transferred from the PI surface onto the cotton fabric substrate by controlling temperature and pressure. This facilitates the development of a TENG that delivers significantly higher electrical output compared to one using a conventional aluminium electrode. We report a comparative study of two TENGs: in both cases, cotton fabric and ecoflex were used as the tribo-positive and tribo-negative materials respectively. However, in one case the LIG electrode fabricated on cotton fabric was used and referred to as CLIG-TENG, while the conventional aluminium electrode was used in another TENG, referred to as C-TENG. The CLIG-TENG demonstrated 160%, 150%, and 190% higher voltage, current, and power output respectively, compared to the C-TENG. The enhanced performance of the CLIG-TENG is attributed to the strong bindings between LIG and cotton fabric, work function, and dielectric of the LIG attached cotton fabric. Furthermore, the CLIG-TENG exhibited excellent stability over 10,000 cycles demonstrating the durability of the transferred LIG. The ultrasensitive properties of the CLIG-TENG have also been validated through various healthcare sensing applications.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"8 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177023","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

Structure-driven design of cellular graphene/polystyrene composites with balanced dielectric loss and impedance matching for enabling multiband electromagnetic wave absorption 具有平衡介质损耗和阻抗匹配的多孔石墨烯/聚苯乙烯复合材料的结构驱动设计，可实现多波段电磁波吸收

IF 15.1 1区工程技术

Chemical Engineering Journal Pub Date : 2025-05-29 DOI: 10.1016/j.cej.2025.164290

Chen Zhang, Wang Yang, Bo Jiang, Zhengxuan Li, Shaoxiong Du, Zhongzhen Ding, Xi Wu, Wenjie Zhu, Junyan Dong, Lingyu Kong, Ziyang Cao, Yongfeng Li

{"title":"Structure-driven design of cellular graphene/polystyrene composites with balanced dielectric loss and impedance matching for enabling multiband electromagnetic wave absorption","authors":"Chen Zhang, Wang Yang, Bo Jiang, Zhengxuan Li, Shaoxiong Du, Zhongzhen Ding, Xi Wu, Wenjie Zhu, Junyan Dong, Lingyu Kong, Ziyang Cao, Yongfeng Li","doi":"10.1016/j.cej.2025.164290","DOIUrl":"https://doi.org/10.1016/j.cej.2025.164290","url":null,"abstract":"Polymer-based composites have emerged as promising alternatives to circumvent the practical limitations of powdered carbon materials in electromagnetic wave absorption (EWA) applications. However, the inherent high percolation threshold feature of polymer matrices typically necessitates substantial filler loadings to establish continuous conductive networks, which induces impedance mismatch through excessive conductivity. Herein, we demonstrate a solvent phase separation strategy to fabricate cellular-structured graphene/polystyrene (G/PS) composite with engineered dielectric properties. Graphene nanosheets with high filler loading can be easily and uniformly anchored on the honeycomb skeleton. The architectured porous system achieves satisfying impedance matching, and abundant heterogeneous interfaces induce intrinsic polarization loss and interfacial charge accumulation. Notably, the suppressed frequency dispersion of imaginary permittivity maintains optimal dielectric loss values in the high-frequency region, overcoming the typical conductivity-dominated loss mechanism in the graphene composite. The synergistic interplay between polarization dissipation and moderate conductive loss yields exceptional multi-band absorption performance: peak reflection loss reaches −51.37 dB (1.74 mm) and −55.37 dB (2.58 mm), and effective absorption bandwidth of 5.8 GHz. This work establishes structure-property relationships of G/PS between oriented pore architecture and dielectric polarization loss, also providing a materials design paradigm for developing advanced EWA materials through morphology-engineered dielectric response.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"58 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177063","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

Multifunctional nanozyme capsule for sensitive bacterial detection and synergistic antibacterial therapy 用于敏感细菌检测和协同抗菌治疗的多功能纳米酶胶囊

IF 15.1 1区工程技术

Chemical Engineering Journal Pub Date : 2025-05-29 DOI: 10.1016/j.cej.2025.164260

Peng Liu, Chuanwei Shi, Yeping Liu, Fei Yang, Yanzhao Yang

{"title":"Multifunctional nanozyme capsule for sensitive bacterial detection and synergistic antibacterial therapy","authors":"Peng Liu, Chuanwei Shi, Yeping Liu, Fei Yang, Yanzhao Yang","doi":"10.1016/j.cej.2025.164260","DOIUrl":"https://doi.org/10.1016/j.cej.2025.164260","url":null,"abstract":"The escalating global proliferation of antibiotic-resistant pathogens poses unprecedented challenges to public health, demanding innovative platforms that integrate rapid pathogen identification with enhanced antimicrobial efficacy. Here, we engineer a stimuli-responsive nanozyme capsule (Zn/Fe-ZIF-NP) for dual-modal bacterial detection and synergistic antimicrobial action against drug-resistant strains. Zn/Fe-ZIF-NP encapsulates both a fluorochrome (6-Hydroxyfluorescein, FAM) and antibacterial agent ciprofloxacin (CIP) within bimetallic zeolitic imidazolate framework nanoparticles, thereby enabling dual functionalities: visual detection of bacteria and synergistic antibacterial efficacy. The Zn/Fe-ZIF-NP exhibits peroxidase-like activity, converting H2O2 into bactericidal hydroxyl radicals (•OH) that induce oxidative stress in bacteria by damaging their membrane lipids. Using Escherichia coli and Staphylococcus aureus as models, Zn/Fe-ZIF-NP undergoes bacteria-activated degradation. Bacterial adenosine triphosphate (ATP) release triggers nanoparticle breakdown, which liberates FAM for fluorescence detection and CIP for antimicrobial action. The combined action of CIP and Zn/Fe-ZIF-NP further promotes ATP leakage, accelerating nanoparticle degradation and enhancing antibacterial activity. When the concentration of CIP@Zn/Fe-ZIF-NP reached the minimum bactericidal concentration (MBC) of 80 μg/mL, the bactericidal efficiency against both bacterial strains approximately 98 %. Moreover, the ZIF structure acts as protective carriers for the encapsulated agents, minimizing CIP loss and maintaining antibiotic activity. This multifunctional nano-capsule system integrates diagnostics and therapy by combining nanozymes, antibiotics, and fluorescent signaling, enabling pathogen detection and combating drug-resistant infections.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"82 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144176814","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

Novel electrolyte design for high-efficiency vanadium redox flow batteries with enhanced 3.0 M V3+ stability at low temperatures 新型电解液设计高效钒氧化还原液流电池，增强3.0 M V3+在低温下的稳定性

IF 15.1 1区工程技术

Chemical Engineering Journal Pub Date : 2025-05-29 DOI: 10.1016/j.cej.2025.164293

Junyan Du, Huitong Lin, Longyan Zhang, Shiyuan Liu, Lijun Wang

{"title":"Novel electrolyte design for high-efficiency vanadium redox flow batteries with enhanced 3.0 M V3+ stability at low temperatures","authors":"Junyan Du, Huitong Lin, Longyan Zhang, Shiyuan Liu, Lijun Wang","doi":"10.1016/j.cej.2025.164293","DOIUrl":"https://doi.org/10.1016/j.cej.2025.164293","url":null,"abstract":"Vanadium redox flow batteries (VRFB) are gradually becoming an important support to address the serious limitations of renewable energy development. The ideal electrolyte for vanadium batteries needs to ensure the stability of high-concentration vanadium ions in different oxidation states over a wide temperature range. A key issue to be resolved is to improve the stability of V5+ at high temperatures (50 °C) and V3+ at low temperatures (−5 °C). However, to date, no suitable electrolyte has been found that can simultaneously meet these requirements. Here, we report and validate a design strategy for a high-concentration, high-stability electrolyte prepared using raw materials containing both vanadium and chlorine. Notably, no external HCl was added as a chloride source in this study, allowing for controlled H+ content. Additionally, the complexation of Cl− and SO42− with V3+ inhibits the deprotonation of [V(H2O)6]3+ and prevents the nucleation process prior to precipitation. The developed 3.0 M electrolyte remains stable over a wide temperature range from −5 °C to 50 °C. At 80 mA cm−2, the energy efficiency of the VRFB exceeds 80 %. Our design increases the vanadium concentration in the VRFB while ensuring stability. This advancement provides data support for high-concentration, high-stability, and high-performance VRFB.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"6 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177021","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

Cascade assembly of metal-organic Framework–Immobilized enzyme complexes for enhanced catalytic activity and sensing applications 金属有机框架-固定化酶配合物的级联组装用于增强催化活性和传感应用

IF 15.1 1区工程技术

Chemical Engineering Journal Pub Date : 2025-05-29 DOI: 10.1016/j.cej.2025.164279

Zuyao Fu, Hao Wang, Lingfeng Yang, Zhaoyang Ding, Jing Xie

{"title":"Cascade assembly of metal-organic Framework–Immobilized enzyme complexes for enhanced catalytic activity and sensing applications","authors":"Zuyao Fu, Hao Wang, Lingfeng Yang, Zhaoyang Ding, Jing Xie","doi":"10.1016/j.cej.2025.164279","DOIUrl":"https://doi.org/10.1016/j.cej.2025.164279","url":null,"abstract":"Immobilized enzymes retain the high catalytic efficiency of natural enzymes while exhibiting improved stability under extreme conditions and reusability, which has led to their widespread application in sensing. This study presents the strategic immobilization of horseradish peroxidase (HRP) on magnetic UiO-66-NH2@PDA@Fe3O4 frameworks, resulting in magnetic Metal-Organic Framework (MOF)-enzyme complexes (HRP@UiO-66-NH2@PDA@Fe3O4, named HUNPF). The immobilization of HRP led to the complexes exhibiting exclusively stable peroxidase activity. The Michaelis constant (Km) of immobilized HRP decreased to one-third of that of free HRP, indicating enhanced substrate affinity, while the ordered structure and large surface area of UiO-66-NH2@PDA@Fe3O4 enhanced enzyme-substrate interactions. Furthermore, the creation of Zr-Fe active center synergistically enhances substrate catalysis alongside HRP, helping to counterbalance the activity loss caused by immobilization. Remarkably, the composite retained 90 % catalytic activity after 10 reuse cycles under magnetic recovery. A dual-mode colorimetric/fluorometric sensor was developed for nitrite detection using HUNPF, achieving detection limits of 0.20 μM and 0.13 μM for the colorimetric and fluorometric modes, respectively. This sensor offers low detection limits, excellent reliability, and high sensitivity, making it a valuable tool for environmental monitoring and food safety applications.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"128 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177024","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