Sensors and Actuators B: Chemical最新文献_第8页

Integrating recognition peptide into a nanozyme to mimic uricase binding pocket as a multifunctional nanoplatform for highly selective uric acid recognition, sensing and degrading 将识别肽集成到纳米酶中以模拟尿酸酶结合口袋，作为高选择性尿酸识别、感知和降解的多功能纳米平台

IF 8 1区化学

Sensors and Actuators B: Chemical Pub Date : 2024-10-19 DOI: 10.1016/j.snb.2024.136784

{"title":"Integrating recognition peptide into a nanozyme to mimic uricase binding pocket as a multifunctional nanoplatform for highly selective uric acid recognition, sensing and degrading","authors":"","doi":"10.1016/j.snb.2024.136784","DOIUrl":"10.1016/j.snb.2024.136784","url":null,"abstract":"<div><div>Nanozyme based colorimetric sensor for physiological biomarkers detection is becoming an increasingly influential technology in diagnosis, but the selective discrimination of biomarkers using single nanozyme without natural enzyme is greatly challenging. Here, a colorimetric detection platform for biomarker is successfully constructed by integrating recognition peptide (RGPT) into a nanozyme to mimic the binding pocket in natural enzyme. Firstly, RGPT-ultrafine palladium nanoparticles (PdNPs)@reduced graphene oxide (rGO) composite was facilely prepared using an arginine-rich RGPT. RGPT-PdNP@rGO composite displays outstanding laccase-like activity with <em>K</em><sub>m</sub> being 0.075 mM at significantly low dosage used, which is one magnitude lower than that of natural enzyme. RGPT-PdNP@rGO nanozyme based one-step sensor can selectively detect uric acid (UA) with a comprehensive linear range from 0.2 to 110 μM and a limit of detection of 120 nM. Moreover, RGPT-PdNP@rGO composite displays an outstanding activity for UA oxidation with <em>K</em><sub>m</sub> being 0.024 mM, revealing the nanozyme exhibits a similar affinity towards UA as natural uricase due to the cooperation of the three components. Compared with our previous work, these extremely improved UA recognition, sensing and degrading performances not only support the role of RGPT in enhancing with the recognition ability of the composite nanozyme for targeted UA, but also reveal the recognition role of RGPT is associated closely with inorganic components in the composite. This work provides more definitive and comprehensive information about multifunctional nanozymes for precise biomarker recognition by introducing recognition peptide, which is highly significant for applications beyond mimic-enzyme catalyst, including theranostic, sensing, and energy fields.</div></div>","PeriodicalId":425,"journal":{"name":"Sensors and Actuators B: Chemical","volume":null,"pages":null},"PeriodicalIF":8.0,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142450129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rational design of ZnO-SnO2 Janus nanofibers for highly sensitive triethylamine detection 用于高灵敏度三乙胺检测的 ZnO-SnO2 Janus 纳米纤维的合理设计

IF 8.4 1区化学

Sensors and Actuators B: Chemical Pub Date : 2024-10-19 DOI: 10.1016/j.snb.2024.136805

Zheyan Hu, Sarula Li, Feng Li, Tianqi Wang, Hong Shao, Xiangting Dong

{"title":"Rational design of ZnO-SnO2 Janus nanofibers for highly sensitive triethylamine detection","authors":"Zheyan Hu, Sarula Li, Feng Li, Tianqi Wang, Hong Shao, Xiangting Dong","doi":"10.1016/j.snb.2024.136805","DOIUrl":"https://doi.org/10.1016/j.snb.2024.136805","url":null,"abstract":"Herein, ZnO-SnO<sub>2</sub> Janus nanofibers (NFs) were synthesized by a parallel electrospinning method and its sensing performances were tested. Considering the compositions of the two metal oxide semiconductors in Janus structure, different ratios of ZnO and SnO<sub>2</sub> were designed and controlled. The optimum ratios of ZnO and SnO<sub>2</sub> was 1:2 by analyzing their sensing performances to triethylamine (TEA) gas. Gas sensors based on ZS-12 Janus NFs exhibited a high response to TEA (45.2) and an excellent sensing response/recovery reproducibility. In order to investigate the sensing mechanism of Janus structure, ZnO NFs and SnO<sub>2</sub> NFs were synthesized and used as controlled experiment. The results indicated that the heterostructures in Janus NFs is the key factor for the enhanced TEA sensing performances. The electrons flowed in the ZnO-SnO<sub>2</sub> Janus structure leading to the variation of ionic oxygen species and electron depletion layer. These phenomena improved the reaction of TEA gas molecules with ionic oxygen species so that the TEA sensing performances were enhanced. Based on the Janus structures, a satisfactory gas sensor for detecting TEA gas were developed. Significantly, this work investigated the sensing mechanism of Janus structures and provided an efficient strategy for the gas sensing materials.","PeriodicalId":425,"journal":{"name":"Sensors and Actuators B: Chemical","volume":null,"pages":null},"PeriodicalIF":8.4,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142450144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sustainable di-functional stimuli-responsive imprinted nanozymes for reversible colorimetric sensing of tetracycline 用于四环素可逆比色传感的可持续双功能刺激响应印迹纳米酶

IF 8 1区化学

Sensors and Actuators B: Chemical Pub Date : 2024-10-19 DOI: 10.1016/j.snb.2024.136800

{"title":"Sustainable di-functional stimuli-responsive imprinted nanozymes for reversible colorimetric sensing of tetracycline","authors":"","doi":"10.1016/j.snb.2024.136800","DOIUrl":"10.1016/j.snb.2024.136800","url":null,"abstract":"<div><div>Regenerable nanozymes with high catalytic specificity and sustainability may serve as substitutes for naturally occurring enzymes, but their application is hindered by inadequate and nonselective catalytic activity. In this study, we constructed a photo-responsive molecularly imprinted layer on the Fe<sub>3</sub>O<sub>4</sub> nanozyme surface (P-MIPs) using an ATRP method and obtained high-specificity reversible colorimetric sensing of tetracycline (TC). Due to the photo-responsive properties of P-MIPs, the imprinted nanozyme undergoes reversible release and uptake of TC under alternating irradiation at 365/440 nm based on the photo-regulated conformational transformation of the 4-[(4-methacryloyloxy)phenylazo] benzenesulfonic acid (MAPASA) at the polymer receptor sites, which may be confirmed by calculating the electron densities of the <em>trans-/cis</em>-MAPASA forms. Simultaneously, these processes can be visualized through the change in the color of the substrates. Highly specific P-MIPs-based nanozyme also exhibit adequate stability and sustainable catalytic activity after multiple cycles. This method can be used to achieve nanozymes with high selectivity for the enrichment, separation, and detection of hazardous substances and contribute to material sustainability.</div></div>","PeriodicalId":425,"journal":{"name":"Sensors and Actuators B: Chemical","volume":null,"pages":null},"PeriodicalIF":8.0,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142450130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Gold nanoprism enhanced SERS aptasensor for simultaneous detection of thrombin and VEGF 同时检测凝血酶和血管内皮生长因子的金纳米光栅增强型 SERS 光传感器

IF 8 1区化学

Sensors and Actuators B: Chemical Pub Date : 2024-10-19 DOI: 10.1016/j.snb.2024.136811

{"title":"Gold nanoprism enhanced SERS aptasensor for simultaneous detection of thrombin and VEGF","authors":"","doi":"10.1016/j.snb.2024.136811","DOIUrl":"10.1016/j.snb.2024.136811","url":null,"abstract":"<div><div>Sensitive detection of disease-specific biomarkers with high accuracy is crucial for early diagnosis, therapeutic monitoring, and understanding underlying pathological mechanisms. Traditional methods, such as immunohistochemistry and enzyme-linked immunosorbent assays (ELISA), face limitations due to the complex and expensive production of antibodies. In this context, aptamers, short oligonucleotides with advantages like easy synthesis, low cost, high specificity, and stability, have emerged as promising alternatives for biomolecular sensing. In this study, we introduce a surface-enhanced Raman spectroscopy (SERS) aptasensor for the multiplexed detection of human α-thrombin and vascular endothelial growth factor (VEGF-165). By leveraging aptamer-based biorecognition elements, our approach capitalizes on the small gaps created by aptamers, generating intense electromagnetic hotspots that significantly amplify the SERS signal. This enables simultaneous detection of human α-thrombin and VEGF-165 with remarkable sensitivity (100 fM and 1 pM, respectively). Notably, we also employ a digital protocol for analyzing the obtained vibrational spectra, marking the first-time utilization of this method for such aptasensors and offering precise quantification even at ultralow concentration regimes. We envision the reported aptasensor provides a roadmap for developing superior aptamer-based spectroscopical tools for a wide range of applications in biology and medicine.</div></div>","PeriodicalId":425,"journal":{"name":"Sensors and Actuators B: Chemical","volume":null,"pages":null},"PeriodicalIF":8.0,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142450145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ONOO- regulating ICT of mitochondria-targeted photosensitizers to enhance Type-I photochemical reactions 线粒体靶向光敏剂的 ONOO- 调节 ICT，以增强 I 型光化学反应

IF 8 1区化学

Sensors and Actuators B: Chemical Pub Date : 2024-10-19 DOI: 10.1016/j.snb.2024.136810

{"title":"ONOO- regulating ICT of mitochondria-targeted photosensitizers to enhance Type-I photochemical reactions","authors":"","doi":"10.1016/j.snb.2024.136810","DOIUrl":"10.1016/j.snb.2024.136810","url":null,"abstract":"<div><div>The photochemical reaction efficiency of ICT-based Type-I photosensitizers can be effectively enhanced by the regulation of electron-donating and electron-withdrawing groups in the lesion area. Based on this strategy, a mitochondria-targeted photosensitizer (TPA-NH<sub>2</sub>-B) was designed and synthesized in this study, using benzeneboronic acid pinacol ester group as recognition group for ONOO<sup>-</sup>. Such molecular structure exhibits significant ICT change before and after responding to ONOO<sup>-</sup>. TPA-NH<sub>2</sub>-B with weaker ICT effect rapidly responds to ONOO<sup>-</sup> within 15 s and form the reaction product TPA-NH<sub>2</sub> with strong ICT effect. The response process for ONOO<sup>-</sup> is accompanied by the implementation of advanced ICT. Electron paramagnetic resonance experiments and spectrum assay with DHR123 showed an increase in ROS production after TPA-NH<sub>2</sub>-B reacted with ONOO<sup>-</sup>. Meanwhile, TCNQ experiment results show that the quenching constant increased by 5.7-fold after responding to ONOO<sup>-</sup>, indicating that the efficiency of electron transfer during Type-I PDT process has been enhanced. In live cells, the response process of TPA-NH<sub>2</sub>-B to ONOO<sup>-</sup> has also been confirmed. TPA-NH<sub>2</sub>-B showed high mitochondria targeting, good phototoxicity and low dark toxicity. Finally, tumor experiments validated that TPA-NH<sub>2</sub>-B efficiently generates ROS under light irradiation, leading to cell death and inhibiting tumor growth. The above experiments prove that photosensitizers based on ICT mechanisms can adjust the efficiency of photochemical reactions by regulating the efficiency of ICT.</div></div>","PeriodicalId":425,"journal":{"name":"Sensors and Actuators B: Chemical","volume":null,"pages":null},"PeriodicalIF":8.0,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142450206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing sensitivity in fluorescence measurements across an ultra-wide concentration range through optimizing combined-segments strategy 通过优化组合段策略提高超宽浓度范围荧光测量的灵敏度

IF 8 1区化学

Sensors and Actuators B: Chemical Pub Date : 2024-10-18 DOI: 10.1016/j.snb.2024.136788

{"title":"Enhancing sensitivity in fluorescence measurements across an ultra-wide concentration range through optimizing combined-segments strategy","authors":"","doi":"10.1016/j.snb.2024.136788","DOIUrl":"10.1016/j.snb.2024.136788","url":null,"abstract":"<div><div>Fluorescence measurement technology is crucial in analytical instrumentation. However, when applied in fields such as environmental science and medical research for quantification purposes, it requires prior estimation of sample concentration and sample dilution to ensure measurement precision. This requirement presents challenge for its broader application in online fluorescence sensing. This study addresses the challenge of achieving high-precision measurements across an ultra-wide concentration range, which is critical for applications ranging from environmental monitoring to clinical diagnostics. The binary segmentation method can initially achieve the goal of ultra-wide range fluorescence measurement, but it fails to maintain sensitivity and precision across the entire range, with relative errors exceeding <span><math><mrow><mo>±</mo><mn>15</mn><mo>%</mo></mrow></math></span>. Therefore, we propose an optimizing combined-segments strategy, which examines the effects of adjusting the fluorescence reception position, range, and region interval parameters of the fluorescence reception probes on measurement sensitivity limits. This strategy aims to find the optimal measurement sensitivity limit (<span><math><msub><mrow><mi>l</mi><mi>m</mi></mrow><mrow><mi>opt</mi></mrow></msub></math></span>) and the best combined-segments configuration based on more than one quantitative relationship curves. Experimental results demonstrate that within a concentration range <span><math><mn>20</mn></math></span> times broader than the linear range, it can effectively maintain relative errors within <span><math><mrow><mo>±</mo><mn>5</mn><mo>%</mo><mo>.</mo></mrow></math></span> This enhances the applicability of fluorescence sensing techniques in various practical settings and advances online and direct fluorescence measurement technologies across an ultra-wide concentration range.</div></div>","PeriodicalId":425,"journal":{"name":"Sensors and Actuators B: Chemical","volume":null,"pages":null},"PeriodicalIF":8.0,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142449716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tailored controllable bifunctional fluorescent-magnetic nanobeads for new generation fast-response immunosensor with dual-signal amplification 量身定制的可控双功能荧光磁性纳米吸附剂，用于新一代双信号放大快速反应免疫传感器

IF 8 1区化学

Sensors and Actuators B: Chemical Pub Date : 2024-10-18 DOI: 10.1016/j.snb.2024.136804

{"title":"Tailored controllable bifunctional fluorescent-magnetic nanobeads for new generation fast-response immunosensor with dual-signal amplification","authors":"","doi":"10.1016/j.snb.2024.136804","DOIUrl":"10.1016/j.snb.2024.136804","url":null,"abstract":"<div><div>Immunosensors based on the fluorescence-linked immunosorbent assay (FLISA) platform are now widely used; however, the long-term response and lower sensitivity limited their development in clinical applications. In this study, we first tailored bifunctional magnetic nanoparticle (MNP)-quantum dot (QD) nanobeads (MQBs) with rapid magnetic response and strong fluorescence intensity for the FLISA platform to construct a fast-response immunosensor. Under optimal conditions, we constructed a dual-signal amplification immunosensor based on an MQB-driven FLISA platform for a severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antigen. We achieved a 29-fold increase in fluorescence intensity over the QD nanobeads (SiO<sub>2</sub>/QD/SiO<sub>2</sub>, QBs). Compared with the conventional FLISA platform-based QBs, the sensitivity of the developed immunosensor increased 63-fold to 7.50 pg/mL in half the detection time of common FLISA (only 30 min). More important, the test results of this dual-signal amplification immunosensor showed good specificity and accuracy. This novel MQB magnetic-driven FLISA platform with high throughput, as a proof of concept, effectively improved sensitivity and shortened reaction time. As a result, it is expected to have significant potential in the field of point-of-care testing.</div></div>","PeriodicalId":425,"journal":{"name":"Sensors and Actuators B: Chemical","volume":null,"pages":null},"PeriodicalIF":8.0,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142449773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A high-performance, flexible, and dual-modal humidity-piezoelectric sensor without mutual interference 一种高性能、灵活、无相互干扰的双模式湿度压电传感器

IF 8 1区化学

Sensors and Actuators B: Chemical Pub Date : 2024-10-18 DOI: 10.1016/j.snb.2024.136778

{"title":"A high-performance, flexible, and dual-modal humidity-piezoelectric sensor without mutual interference","authors":"","doi":"10.1016/j.snb.2024.136778","DOIUrl":"10.1016/j.snb.2024.136778","url":null,"abstract":"<div><div>High-performance, flexible, and multifunctional humidity-piezoelectric sensors are applicable to respiratory pattern detection, man-machine motion distinction, and dual-modal speech recognition. However, signal disturbances between the humidity and pressure signals remain, and interference from the external environment such as temperature further results in signal vibrations. In this study, a high-performance, flexible, and dual-modal humidity-piezoelectric sensor is introduced to achieve accurate and stable sensing signals by fully prohibiting mutual interference towards simultaneous humidity and pressure stimuli. It is first designed using a high-performance humidity-sensing unit constructed by polyacrylate sodium (PAAS)/carbon nanotube (CNT) film and a piezoelectric sensing unit formed by polyvinylidene fluoride (PVDF)/CNT nanofiber film. The patterned PAAS/CNT unit exhibits a resistance change of 1100 % in relative humidity of 23 %–98 %, minor hysteresis, favorable durability, and negligible pressure interference. The PVDF/CNT piezoelectric unit demonstrates a sensitivity of 0.11 V/kPa in a wide pressure range of 3–115 kPa, good linearity, high durability, negligible humidity and temperature interference, and fully prohibited signal noise. Moreover, the high-performance, flexible, dual-modal humidity-piezoelectric sensors display significant applications for man-machine motion detection, human gestures and object distinction, and dual-modal speech recognition.</div></div>","PeriodicalId":425,"journal":{"name":"Sensors and Actuators B: Chemical","volume":null,"pages":null},"PeriodicalIF":8.0,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142449774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Primer exchange reaction activation of CRISPR/Cas12a system to construct a versatile and label-free electrochemical sensing platform 激活 CRISPR/Cas12a 系统的引物交换反应，构建多功能无标记电化学传感平台

IF 8 1区化学

Sensors and Actuators B: Chemical Pub Date : 2024-10-18 DOI: 10.1016/j.snb.2024.136791

{"title":"Primer exchange reaction activation of CRISPR/Cas12a system to construct a versatile and label-free electrochemical sensing platform","authors":"","doi":"10.1016/j.snb.2024.136791","DOIUrl":"10.1016/j.snb.2024.136791","url":null,"abstract":"<div><div>The detection of antibiotics and pesticide residues is extremely important to maintain food safety. In this work, a versatile and label-free electrochemical biosensing platform was developed to sensitively detect antibiotics and pesticide residues using primer exchange reaction (PER) signal amplification technology integrated with CRISPR/Cas12a system. Initially, single-stranded DNA (ssDNA, S1) rich in guanine was pre-modified on the electrode surface to capture hemin and form G-quadruplex/hemin complexes, achieving strong electrochemical signal output. When the target was available, it could bind to the aptamer and release the hairpin template of PER, and with the help of DNA polymerase, the short primers pre-modified on the electrode surface were extended into long ssDNA through two PER cycles. The long ssDNA generated by PER circuit contained multiple binding sites of CRISPR/Cas12a, which activated CRISPR/Cas12a system and rapidly cleaved S1 on the electrode surface, preventing the formation of G-quadruplex/hemin complexes, resulting in significantly weakened electrochemical signal and achieving label-free and sensitive detection of the target. Benefiting from the programmability of DNA, universal detection of ampicillin, kanamycin, and acetamiprid was achieved by simply changing the hairpin substrate of PER, with detection limits of 0.33 pM, 0.38 pM, and 0.78 pM (S/N = 3), respectively. Meaningfully, the sensing platform successfully performed the detection of ampicillin in milk and livestock wastewater samples, supplying a new electrochemical analysis method with respect to accurate and reliable detection of actual samples.</div></div>","PeriodicalId":425,"journal":{"name":"Sensors and Actuators B: Chemical","volume":null,"pages":null},"PeriodicalIF":8.0,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142449778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fabrication and Application of ZIF-8 Derived In2O3-ZnO Nanocomposites for Ultra-Sensitive NO2 Sensing under UV Irradiation at Room Temperature 室温紫外线照射下用于超灵敏二氧化氮传感的 ZIF-8 衍生 In2O3-ZnO 纳米复合材料的制备与应用

IF 8.4 1区化学

Sensors and Actuators B: Chemical Pub Date : 2024-10-18 DOI: 10.1016/j.snb.2024.136802

Xingyu Kang, Jianhui Lv, Lei Han, Bin Huang, Huizhang Zhao, Dong Wang, Hairui Fang

{"title":"Fabrication and Application of ZIF-8 Derived In2O3-ZnO Nanocomposites for Ultra-Sensitive NO2 Sensing under UV Irradiation at Room Temperature","authors":"Xingyu Kang, Jianhui Lv, Lei Han, Bin Huang, Huizhang Zhao, Dong Wang, Hairui Fang","doi":"10.1016/j.snb.2024.136802","DOIUrl":"https://doi.org/10.1016/j.snb.2024.136802","url":null,"abstract":"Nitrogen oxide (NO<sub>2</sub>) is common by-products of industrial production, posing significant health risks to workers. Therefore, real-time monitoring of NO<sub>2</sub> is crucial. In this study, innovative In<sub>2</sub>O<sub>3</sub>-ZnO nano-materials were prepared by combining In<sub>2</sub>O<sub>3</sub> with ZIF-8 via electrospinning, for detecting trace amounts of NO<sub>2</sub> at room temperature (RT). Compared to pure In<sub>2</sub>O<sub>3</sub>, the In<sub>2</sub>O<sub>3</sub>-ZnO nano-materials (V2) with a 10% weight ratio of ZIF-8 exhibited a significantly higher response (389.99) and a faster response time (16.9 s) to NO<sub>2</sub> under ultraviolet (UV) irradiation at RT. The superior gas sensing performance of the V2 nano-materials is attributed to the formation of n-n heterojunctions, enhanced optical absorption, increased oxygen vacancy ratio, and excellent dispersion among the nano-materials. The results demonstrate that V2 nano-materials can detect NO<sub>2</sub> at parts-per-billion (ppb) levels at RT, making them suitable for monitoring trace amounts of NO<sub>2</sub> in open environments. Furthermore, a portable real-time NO<sub>2</sub> monitoring device was constructed using V2 as the sensing material, an LM358-based amplifier circuit for data acquisition, an STM32F103C8T6 microcontroller as the main control unit, and a buzzer as an alarm device. Compared to devices using a helical Ni-Cr wire as an indirect heat source, this integrated NO<sub>2</sub> detection device offers real-time alarms with lower energy consumption. This application not only enhances worker health and safety in industrial environments but also demonstrates higher energy efficiency in practical application.","PeriodicalId":425,"journal":{"name":"Sensors and Actuators B: Chemical","volume":null,"pages":null},"PeriodicalIF":8.4,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142449715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0