Sensors and Actuators B: Chemical最新文献_第6页

Sustainable electrochemical sensors from cork-derived laser induced graphene: Non-enzymatic glucose detection in urine

IF 8 1区化学

Sensors and Actuators B: Chemical Pub Date : 2025-01-29 DOI: 10.1016/j.snb.2025.137352

Michele Setti , Eoghan Vaughan , Richard Murray , Labrini Sygellou , Aidan J. Quinn , Mauro Riccò , Daniele Pontiroli , Daniela Iacopino

{"title":"Sustainable electrochemical sensors from cork-derived laser induced graphene: Non-enzymatic glucose detection in urine","authors":"Michele Setti , Eoghan Vaughan , Richard Murray , Labrini Sygellou , Aidan J. Quinn , Mauro Riccò , Daniele Pontiroli , Daniela Iacopino","doi":"10.1016/j.snb.2025.137352","DOIUrl":"10.1016/j.snb.2025.137352","url":null,"abstract":"<div><div>Laser Induced Graphene (LIG) is a highly versatile material with exceptional electrical conductivity and large surface area obtained through the laser pyrolysis of aromatic plastics like polyimides. The recent remarkable discovery that LIG can also be synthesized from environmentally friendly materials like cork, extends application to the manufacture of sustainable, biocompatible, and eco-friendly devices such as biosensors. Here we present the fabrication of a novel “green” non-enzymatic glucose sensor obtained by direct laser writing of flexible cork sheets. To enable glucose detection, the cork sheets were wetted with an aqueous CuSO<sub>4</sub> solution. Laser graphitization promoted the conversion of CuSO<sub>4</sub> into CuO nanoparticles and resulted in formation of copper-cork Laser Induced Graphene (Cu-cLIG) materials displaying high surface area and high density of CuO NPs embedded in the cLIG matrix. The sensor showed excellent glucose sensing performance in buffer and good selectivity over interfering molecules. A fully laser written sensor was also fabricated and tested for detection of glucose in artificial urine. The sensor exhibited high stability and reproducibility, allowing glucose detection in artificial urine with a high sensitivity of <span><math><mrow><mn>223</mn><mspace></mspace><mi>μ</mi><mi>A</mi><mo>/</mo><mrow><mfenced><mrow><mi>mM</mi><mo>⋅</mo><mi>c</mi><msup><mrow><mi>m</mi></mrow><mrow><mn>2</mn></mrow></msup></mrow></mfenced></mrow></mrow></math></span> and a LOD of <span><math><mrow><mn>9.7</mn><mspace></mspace><mi>μ</mi><mi>M</mi></mrow></math></span>. This easy and eco-friendly fabrication method, combined with the use of renewable and abundant precursor materials, paves the way for the development of truly sustainable sensing platforms for future green electronics.</div></div>","PeriodicalId":425,"journal":{"name":"Sensors and Actuators B: Chemical","volume":"430 ","pages":"Article 137352"},"PeriodicalIF":8.0,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143056281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Highly sensitive, selective, and ppb level detection of NO2 gas using SnSe2 micro-flower, SnO2/SnSe2, and Au-SnO2/SnSe2 heterojunctions

IF 8 1区化学

Sensors and Actuators B: Chemical Pub Date : 2025-01-29 DOI: 10.1016/j.snb.2025.137360

PeiJiang Cao , Xin Luo , Fang Jia , YuXiang Zeng , WenJun Liu , DeLiang Zhu , ChunFeng Wang , Shun Han , Ming Fang , XinKe Liu , Dnyandeo Pawar

{"title":"Highly sensitive, selective, and ppb level detection of NO2 gas using SnSe2 micro-flower, SnO2/SnSe2, and Au-SnO2/SnSe2 heterojunctions","authors":"PeiJiang Cao , Xin Luo , Fang Jia , YuXiang Zeng , WenJun Liu , DeLiang Zhu , ChunFeng Wang , Shun Han , Ming Fang , XinKe Liu , Dnyandeo Pawar","doi":"10.1016/j.snb.2025.137360","DOIUrl":"10.1016/j.snb.2025.137360","url":null,"abstract":"<div><div>Transition metal dichalcogenides (TMDCs)-based materials have attracted considerable attention in gas sensing due to their mesmerizing chemical, electrical, optical, and physical properties. In this work, solvothermal synthesized SnSe<sub>2</sub> material is well-tuned by thermal treatment to obtain the series of materials such as SnO<sub>2</sub>/SnSe<sub>2</sub>, SnO<sub>2</sub>, & Au-SnO<sub>2</sub>/SnSe<sub>2</sub>, and explored for NO<sub>2</sub> gas sensing. The SnSe<sub>2</sub>-36 sensor exhibits a response (R<sub>g</sub>/R<sub>a</sub>) of 5.5 under 4 ppm NO<sub>2</sub> at 30 °C. The sensing performance is significantly enhanced for SnO<sub>2</sub>/SnSe<sub>2</sub>-1 heterojunction with a response of 15.07, response/recovery time of 63 s /122 s, and limit of detection (LOD) of 60.61 ppb to 4 ppm NO<sub>2</sub> at 90 °C. The remarkable sensing performance is observed for Au-SnO<sub>2</sub>/SnSe<sub>2</sub>-1 heterojunction with a response of 25.31, response/recovery time of 156 s/56 s, and LOD of 13.67 ppb to 4 ppm NO<sub>2</sub> at 80 °C. The improvement in the gas sensing properties of the materials is attributed to the good hoping of electron exchange between the depletion layer and NO<sub>2</sub> gas, increase in specific surface area at the interface, lower adsorption energy of NO<sub>2</sub> with heterojunction, and spill-over effect. The remarkable results could attract key attention in materials synthesis and its wide tunability towards gas sensing applications.</div></div>","PeriodicalId":425,"journal":{"name":"Sensors and Actuators B: Chemical","volume":"430 ","pages":"Article 137360"},"PeriodicalIF":8.0,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143055266","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

Novel samarium-based metal-organic frameworks with antenna effect-induced electrochemiluminescence for acetamiprid assay

IF 8 1区化学

Sensors and Actuators B: Chemical Pub Date : 2025-01-29 DOI: 10.1016/j.snb.2025.137343

Xiaoge Peng , Ying He , Kejun Tan, Ruo Yuan, Shihong Chen

{"title":"Novel samarium-based metal-organic frameworks with antenna effect-induced electrochemiluminescence for acetamiprid assay","authors":"Xiaoge Peng , Ying He , Kejun Tan, Ruo Yuan, Shihong Chen","doi":"10.1016/j.snb.2025.137343","DOIUrl":"10.1016/j.snb.2025.137343","url":null,"abstract":"<div><div>Lanthanide metal-organic frameworks (Ln-MOFs) have emerged as promising electrochemiluminescence (ECL) luminophores on account of their distinctive luminescence performances. However, currently reported Ln-MOFs-based ECL luminophores are mainly limited to terbium-based MOFs (Tb-MOFs) and europium-based MOFs (Eu-MOFs). This work innovatively developed samarium-based MOFs (Sm-MOFs) as ECL luminophores. Sm-MOFs were prepared via hydrothermal method with Sm<sup>3 +</sup> as metal node and 1,3,5-benzenetricarboxylic acid (H<sub>3</sub>BTC) as organic ligand. H<sub>3</sub>BTC as “antenna” transferred energy to Sm<sup>3+</sup> through antenna effect, enabling Sm-MOFs to emit brilliant cathode ECL signal with persulfate (S<sub>2</sub>O<sub>8</sub><sup>2-</sup>) as coreactant. Bismuth sulfide (Bi<sub>2</sub>S<sub>3</sub>) acted as signal regulator to remarkably quench the ECL emission from Sm-MOFs through ECL resonance energy transfer (ECL-RET). Using acetamiprid (ACE) as the target detection model, the ECL luminophores Sm-MOFs cleverly coupled signal regulator Bi<sub>2</sub>S<sub>3</sub> and enzyme-free triple amplification strategy of hybridization chain reaction (HCR), catalytic hairpin assembly (CHA), and DNAzyme walker to fabricate an ECL biosensor. The limit of detection (LOD) was as low as 4.58 fM. This work not only exploited novel Ln-MOFs-based ECL luminophores and their application in ECL field, but also built an enzyme-free multiple amplification strategy for highly sensitive assay of ACE.</div></div>","PeriodicalId":425,"journal":{"name":"Sensors and Actuators B: Chemical","volume":"430 ","pages":"Article 137343"},"PeriodicalIF":8.0,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143056391","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

Rapid and precise measurement of atmospheric CO2 and its isotopic ratios using a mid-infrared gas sensor

IF 8 1区化学

Sensors and Actuators B: Chemical Pub Date : 2025-01-28 DOI: 10.1016/j.snb.2025.137329

Xiaojuan Cui , Xiaohan Cui , Qizhi Zhu , Shuaikang Yin , Xin Shi , Lewen Zhang , Benli Yu , Yang Hong , Weidong Chen

{"title":"Rapid and precise measurement of atmospheric CO2 and its isotopic ratios using a mid-infrared gas sensor","authors":"Xiaojuan Cui , Xiaohan Cui , Qizhi Zhu , Shuaikang Yin , Xin Shi , Lewen Zhang , Benli Yu , Yang Hong , Weidong Chen","doi":"10.1016/j.snb.2025.137329","DOIUrl":"10.1016/j.snb.2025.137329","url":null,"abstract":"<div><div>A new sensor system using tunable laser absorption spectroscopy (TLAS) technology and a quantum cascade laser (QCL) has been developed to rapidly and precisely measure atmospheric CO<sub>2</sub> levels and its stable isotope ratios. The sensor can detect CO<sub>2</sub> levels as low as 0.219 ppm within 116 ss. It achieved measurement precisions of 0.256 ‰ for δ<sup>13</sup>C and 0.293 ‰ for δ<sup>18</sup>O at 95 ss. This system used the weighted Kalman filtering algorithm for the first time, resulting in a 7-fold improvement in precision for δ<sup>13</sup>C and δ<sup>18</sup>O measurements within a 1-s integration time. This improvement is comparable to the precision obtained by the standard averaging technique after 95 ss. Multiple measurements near the laboratory showed average values of −9.19 ± 0.29 ‰ for δ<sup>13</sup>C and −1.46 ± 0.34 ‰ for δ<sup>18</sup>O in the atmosphere. The successful development of this gas sensor lays the foundation for its future application in atmospheric CO<sub>2</sub> tracing.</div></div>","PeriodicalId":425,"journal":{"name":"Sensors and Actuators B: Chemical","volume":"430 ","pages":"Article 137329"},"PeriodicalIF":8.0,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050608","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

RGO@In2O3 based flexible gas sensor: Efficient monitoring of trace NO2 gas at room temperature

IF 8 1区化学

Sensors and Actuators B: Chemical Pub Date : 2025-01-28 DOI: 10.1016/j.snb.2025.137359

Wenyuan Yang , Yangyang Huo , Tianqi Wang, Xintong Liu, Dan Li, Hui Yu, Xiangting Dong, Ying Yang

{"title":"RGO@In2O3 based flexible gas sensor: Efficient monitoring of trace NO2 gas at room temperature","authors":"Wenyuan Yang , Yangyang Huo , Tianqi Wang, Xintong Liu, Dan Li, Hui Yu, Xiangting Dong, Ying Yang","doi":"10.1016/j.snb.2025.137359","DOIUrl":"10.1016/j.snb.2025.137359","url":null,"abstract":"<div><div>In the realm of modern reinforced concrete, the harmful gases released during industrial production pose a significant threat to human health, thus the demand for wearable gas sensors is increasing day by day. However, creating a portable flexible sensor for detecting nitrogen dioxide under room temperature conditions and ensuring outstanding gas sensing performance remains a challenge. To address this issue, this study synthesized rGO@In<sub>2</sub>O<sub>3</sub> composite nanofibers using coaxial electrospinning and calcination methods. Compared to pure In<sub>2</sub>O<sub>3</sub>, the rGO@In<sub>2</sub>O<sub>3</sub> composite nanofibers exhibit superior gas sensing performance. At room temperature (25 °C), the response value of the rGO@In<sub>2</sub>O<sub>3</sub> sensor to 1 ppm nitrogen dioxide gas is 14.18 (with a theoretical detection limit as low as 2.58 ppb). Its excellent performance can be attributed to a relatively complete depletion layer that enhances the high carrier density in the p-n heterojunction, consistent with the shell depletion theory in semiconductor physics. Furthermore, the rGO@In<sub>2</sub>O<sub>3</sub> sensor also demonstrates outstanding stability, selectivity and flexibility, offering a new direction for the development of wearable gas sensors at room temperature.</div></div>","PeriodicalId":425,"journal":{"name":"Sensors and Actuators B: Chemical","volume":"430 ","pages":"Article 137359"},"PeriodicalIF":8.0,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143055267","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

Design an efficient molecularly imprinted photoelectrochemical sensor for detection of butyl benzyl phthalate

IF 8 1区化学

Sensors and Actuators B: Chemical Pub Date : 2025-01-28 DOI: 10.1016/j.snb.2025.137357

Rong Nie , Dongyun Liao , Wenjun Yan , Wenting Liang , Jianhui Zhi , Yujing Guo , Chuan Dong , Lifang Fan

{"title":"Design an efficient molecularly imprinted photoelectrochemical sensor for detection of butyl benzyl phthalate","authors":"Rong Nie , Dongyun Liao , Wenjun Yan , Wenting Liang , Jianhui Zhi , Yujing Guo , Chuan Dong , Lifang Fan","doi":"10.1016/j.snb.2025.137357","DOIUrl":"10.1016/j.snb.2025.137357","url":null,"abstract":"<div><div>In this study, a visible light-driven and efficient molecularly imprinted photoelectrochemical (PEC) sensor was constructed for highly selective and ultrasensitive detection of butyl benzyl phthalate (BBP) based on carbon nitride quantum dots decorated TiO<sub>2</sub> nanorods (CN QDs/TiO<sub>2</sub> NRs) as photoactive material, and polydopamine (PDA) molecularly imprinted polymer (MIP) as recognition element. CN QDs/TiO<sub>2</sub> NRs exhibit outstanding visible light absorption ability and PEC activity. PDA-MIP for specific recognition of BBP was successfully formed on CN QDs/TiO<sub>2</sub> NRs by self-polymerization of dopamine. Furthermore, PDA-MIP with superior electron transfer capacity effectively promote photogenerated carrier separation and enhance visible light utilization, greatly improving photocurrent response. With addition of BBP, owing to BBP being captured into the imprinted holes of PDA-MIP, the electron transfer was hindered, resulting in the decrease of the photocurrent signal. BBP could be quantitatively detected by the photocurrent signal change. The designed PEC sensor exhibited highly specificity, sensitivity, and stability for BBP detection in the range of 0.01–5 ng/L with a low detection limit of 4.0 pg/L. Moreover, the proposed PEC sensor was successfully applied to evaluate BBP content in environmental samples. Therefore, the established sensing platform provides a simple and efficient strategy for detection of BBP in the environment.</div></div>","PeriodicalId":425,"journal":{"name":"Sensors and Actuators B: Chemical","volume":"430 ","pages":"Article 137357"},"PeriodicalIF":8.0,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143055264","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

High-sensitivity flexible meta-surface for terahertz-based breast cancer differentiation: Study in cellular and fresh tissue

IF 8 1区化学

Sensors and Actuators B: Chemical Pub Date : 2025-01-28 DOI: 10.1016/j.snb.2025.137324

Mengyang Cong , Wei Song , Zhongquan Zhang , Jianfeng Qiu

{"title":"High-sensitivity flexible meta-surface for terahertz-based breast cancer differentiation: Study in cellular and fresh tissue","authors":"Mengyang Cong , Wei Song , Zhongquan Zhang , Jianfeng Qiu","doi":"10.1016/j.snb.2025.137324","DOIUrl":"10.1016/j.snb.2025.137324","url":null,"abstract":"<div><div>Breast cancer is one of the most prevalent malignant tumors affecting women. Breast-conserving surgery (BCS) emerges as a secure and effective surgical approach. Terahertz (THz) technology proves advantageous in achieving real-time cancer edge detection during BCS, thanks to its label-free, non-ionizing, and real-time capabilities. In the THz frequency range, breast cancer tissue and normal tissue are indistinguishable due to their similar dielectric constants, which ultimately limits their use in surgical procedures. In this study, we introduced an innovative high-sensitivity meta-surface with an asymmetric slit ring. Through numerical simulations, the meta-surface was optimized to select the structure size with the highest sensitivity. The maximum sensitivity of the meta-surface reached as high as 448 GHz/RIU (f=2.25 THz). The flexible meta-surface show high sensing stability and robustness in 1000 bending cycles. We demonstrated that the THz meta-surface can improve the differentiation between breast cancer and normal breast cells. Meanwhile, combined with THz imaging, the designed meta-surface enhanced the contrast between breast cancer tissue and normal tissue by more than 50 %. This suggests that the strategy we proposed provides a theoretical basis for using THz technology based on meta-surfaces for clinical detection of cell types, and provides a rapid and effective method for doctors to identify whether the cancerous tissue has been completely removed during BCS.</div></div>","PeriodicalId":425,"journal":{"name":"Sensors and Actuators B: Chemical","volume":"430 ","pages":"Article 137324"},"PeriodicalIF":8.0,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143055281","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

Origin identification of Angelica dahurica using a bidirectional mixing network combined with an electronic nose system 利用双向混合网络和电子鼻系统识别白芷的原产地

IF 8 1区化学

Sensors and Actuators B: Chemical Pub Date : 2025-01-28 DOI: 10.1016/j.snb.2025.137356

Yanwei Wang , He Wang , Xingyu Wen , Jiushi Liu , Yan Shi , Hong Men

{"title":"Origin identification of Angelica dahurica using a bidirectional mixing network combined with an electronic nose system","authors":"Yanwei Wang , He Wang , Xingyu Wen , Jiushi Liu , Yan Shi , Hong Men","doi":"10.1016/j.snb.2025.137356","DOIUrl":"10.1016/j.snb.2025.137356","url":null,"abstract":"<div><div>The medicinal value of <em>Angelica dahurica</em> is closely related to its origin. Variations in climate, soil, altitude, and other ecological factors across different origins can lead to significant differences in the quality of <em>Angelica dahurica</em>, and high-quality products are often subject to counterfeiting. To provide a rapid and effective method for quality identification, this paper proposes a Bidirectional Mixing Network (BM-Net) combined with an electronic nose (e-nose) system to distinguish <em>Angelica dahurica</em> from various origins. The e-nose system collects gas information from <em>Angelica dahurica</em> from four different origins with a wide range and four different origins with a small range. A Bidirectional Mixing Module (BMM) is proposed to adaptively calculation both local and global gas features from the time-series and sensor dimensions, with residual connection incorporated to enhance feature representation. Based on the BMM, the BM-Net is designed for effective identification of gas information from <em>Angelica dahurica</em> across different origins. The effectiveness of BM-Net is validated through ablation analysis and comparison with state-of-the-art gas information classification methods. For the gas information dataset of <em>Angelica dahurica</em> from a wide range of origins, BM-Net achieves an accuracy of 97.75 %, a precision of 97.64 %, and a recall of 97.94 %. For the dataset of <em>Angelica dahurica</em> from a small range of origins, BM-Net achieves an accuracy of 96.08 %, a precision of 96.60 %, and a recall of 96.05 %.</div></div>","PeriodicalId":425,"journal":{"name":"Sensors and Actuators B: Chemical","volume":"429 ","pages":"Article 137356"},"PeriodicalIF":8.0,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050629","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 cavity-enhanced MEMS-based photoacoustic sensor for ppt-level trace-gas detection

IF 8 1区化学

Sensors and Actuators B: Chemical Pub Date : 2025-01-28 DOI: 10.1016/j.snb.2025.137313

Jacopo Pelini , Stefano Dello Russo , Zhen Wang , Iacopo Galli , Pablo Cancio Pastor , Inaki Lopez Garcia , Maria Concetta Canino , Alberto Roncaglia , Naota Akikusa , Wei Ren , Paolo De Natale , Mario Siciliani de Cumis , Simone Borri

{"title":"A cavity-enhanced MEMS-based photoacoustic sensor for ppt-level trace-gas detection","authors":"Jacopo Pelini , Stefano Dello Russo , Zhen Wang , Iacopo Galli , Pablo Cancio Pastor , Inaki Lopez Garcia , Maria Concetta Canino , Alberto Roncaglia , Naota Akikusa , Wei Ren , Paolo De Natale , Mario Siciliani de Cumis , Simone Borri","doi":"10.1016/j.snb.2025.137313","DOIUrl":"10.1016/j.snb.2025.137313","url":null,"abstract":"<div><div>Part-per-trillion level trace-molecule detection is becoming increasingly crucial for a variety of fields in our modern society, from climate change monitoring and mitigation to health studies, from industrial processes control to safety and security. The race towards more performing sensors is witnessing a rapid evolution of photoacoustic systems, whose high degree of flexibility allows them to merge their robustness and compactness to cavity-enhanced configurations, boosting their ultimate sensitivity. This work proposes an advanced configuration of a cavity-enhanced cantilever-based photo-acoustic sensor. The developed setup exploits the advantages of mid-IR detection and introduces significant novelties in the key components, namely a non-conventional silicon “racket-shaped” cantilever, a combination of a dual-tube acoustic resonator and optical cavity to enhance the photoacoustic signal, and an improved optical readout system consisting in a stabilized balanced Michelson interferometer. With a final detection sensitivity of dry N<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>O down to 17 parts-per-trillion for 20 s of integration time, corresponding to a Normalized Noise Equivalent Absorption coefficient equal to 5.98 <span><math><mrow><mo>×</mo><mspace></mspace><mn>10</mn></mrow></math></span><sup>-11</sup>cm <sup>-1</sup> WHz<sup>-1/2</sup>, the achieved performance is in line with the best results obtained with PAS-based sensing addressing the same target molecule. This demonstrates the wide range of yet unexplored configurations of photoacoustic systems that can be exploited towards real-time sub-ppt sensors for practical detection of trace chemicals in the air.</div></div>","PeriodicalId":425,"journal":{"name":"Sensors and Actuators B: Chemical","volume":"430 ","pages":"Article 137313"},"PeriodicalIF":8.0,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143055282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Breaking pH limitation of POD-like Cu-NC NP by ATP modulation and construction of colorimetric and ratiometric fluorescence-scattering dual-mode detection method for tetracycline

IF 8 1区化学

Sensors and Actuators B: Chemical Pub Date : 2025-01-28 DOI: 10.1016/j.snb.2025.137358

Qingjie Fu, Shuang Liang, Xingguang Su

{"title":"Breaking pH limitation of POD-like Cu-NC NP by ATP modulation and construction of colorimetric and ratiometric fluorescence-scattering dual-mode detection method for tetracycline","authors":"Qingjie Fu, Shuang Liang, Xingguang Su","doi":"10.1016/j.snb.2025.137358","DOIUrl":"10.1016/j.snb.2025.137358","url":null,"abstract":"<div><div>In this work, a novel POD-like nanozyme Cu-NC NP was synthesized, and the pH limitation was broken by ATP modification. The formed ATP@Cu-NC NP could oxidize TMB into oxTMB in the presence of H<sub>2</sub>O<sub>2</sub> under pH 7. Furthermore, a novel dual-mode detection method for antibiotic tetracycline (TC) was proposed based on the second order scatter (SOS) of ZIF-90 and its inhibition of the POD-like activity of ATP@Cu-NC NP. When TC was present, Zn (ІІ) node of ZIF-90 coordinated with TC to form fluorescent compound TC-Zn and ZIF-90 was therefore decomposed. Thus, the fluorescence of TC-Zn compound at 541 nm increased while the SOS of ZIF-90 at 741 nm decreased, the ratio signal I<sub>541</sub>/S<sub>741</sub> was linearly related to the TC concentration. Meanwhile, the inhibition of the POD-like activity of ATP@Cu-NC NP from ZIF-90 due to the aldehyde group on the surface was reduced after corrosion by TC, the absorbance of oxTMB at 652 nm then recovered, thus colorimetric detection was also achieved. The fluorescence-scattering (FL-SOS) and colorimetric dual-mode detection of TC was sensitive with LODs of 11.556 nM and 0.244 µM, respectively. Successful application in milk, egg and human serum was achieved, proving the applicability of the proposed TC sensing method. A portable kit for visual TC detection was also constructed using agarose hydrogel, which was instrument-free, time-saving and sensitive for the detection of TC.</div></div>","PeriodicalId":425,"journal":{"name":"Sensors and Actuators B: Chemical","volume":"430 ","pages":"Article 137358"},"PeriodicalIF":8.0,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143055284","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