Sensors and Actuators Reports最新文献_第5页

Molecularly imprinted polypyrrole-modified screen-printed electrode: Toward a sensor for furfural derivatives determination 分子印迹聚吡咯修饰的丝网印刷电极：一种测定糠醛衍生物的传感器

IF 6.5

Sensors and Actuators Reports Pub Date : 2025-02-04 DOI: 10.1016/j.snr.2025.100299

Daniele Merli , Alessandra Cutaia , Sofia Prosperi , Camilla Zanoni , Giancarla Alberti

{"title":"Molecularly imprinted polypyrrole-modified screen-printed electrode: Toward a sensor for furfural derivatives determination","authors":"Daniele Merli , Alessandra Cutaia , Sofia Prosperi , Camilla Zanoni , Giancarla Alberti","doi":"10.1016/j.snr.2025.100299","DOIUrl":"10.1016/j.snr.2025.100299","url":null,"abstract":"<div><div>The increasing interest in determining furfural derivatives in food and beverages using low-cost and portable devices has driven our attention to the development of the here proposed voltammetric sensor. It is based on a screen-printed electrochemical cell whose graphite-ink working electrode is surface modified with electropolymerized molecularly imprinted polypyrrole (e-MIP), using 5-(hydroxymethyl)furan-2-carbaldehyde (HMF) as the template. Square wave voltammetry (SWV) is the selected analytical technique, exploiting the irreversible reduction peak of the carbonyl group at -1.7 V vs. Ag/AgCl pseudo reference electrode in 0.1 M phosphate buffer (PBS) at pH 8. The presence of the e-MIP on the working electrode surface enhances the sensitivity by lowering the detection limit of about one order of magnitude if compared with the bare electrode (LOD bare 93 µM; e-MIP 7 µM). The developed sensor is selective for the whole class of furfural-like compounds, allowing the determination of the total furanic aldehydes content. The sensor was applied to the analysis of synthetic solutions and real beverages, such as expresso coffee, obtaining good recovery percentages.</div></div>","PeriodicalId":426,"journal":{"name":"Sensors and Actuators Reports","volume":"9 ","pages":"Article 100299"},"PeriodicalIF":6.5,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143334063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Acoustic bubbles: Inducing cell interactions via trapping, patterning, and removal 声波泡：通过诱捕、形成图案和去除来诱导细胞相互作用

IF 6.5

Sensors and Actuators Reports Pub Date : 2025-02-01 DOI: 10.1016/j.snr.2025.100294

Jonathan Faulkner , Mengren Wu , Madelyn Wicker , Yuan Gao

{"title":"Acoustic bubbles: Inducing cell interactions via trapping, patterning, and removal","authors":"Jonathan Faulkner , Mengren Wu , Madelyn Wicker , Yuan Gao","doi":"10.1016/j.snr.2025.100294","DOIUrl":"10.1016/j.snr.2025.100294","url":null,"abstract":"<div><div>Studying cell-cell interactions is crucial for understanding biological processes and advancing drug development. Recent advancements in microfluidic technology allow cell-cell interaction experiments to be performed on-chip, enabling the study of specific interactions within a highly defined microenvironment. Acoustic bubbles, tiny bubbles excited by an external acoustic source, are clean, biocompatible, and effective tools for manipulating fluids and particles at the microscale. This research presents a novel microfluidic approach using acoustic bubbles to study cell-cell interactions. It focuses on generating, controlling, and removing acoustic bubbles within a microfluidic device to manipulate particles and cells and induce their interaction. In this work, a microbubble is passively generated to separate the channels containing two different types of particles and cells. Under the control of an acoustic field, particles and cells are trapped on either side of the microbubble. The microbubble is then removed to enable interaction between the trapped particles and cells. The impact of channel geometry on bubble stability is quantitatively investigated to optimize the device's performance. Additionally, the successful demonstration of on-chip cell interactions highlights the rapid and straightforward operation of this method. This innovative approach holds great potential for studying specific cell interactions to gain biological insights into disease progression and serves as an effective tool for drug testing.</div></div>","PeriodicalId":426,"journal":{"name":"Sensors and Actuators Reports","volume":"9 ","pages":"Article 100294"},"PeriodicalIF":6.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143158766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-sensitivity colorimetric sensor based on oxidase-like Mn3O4 nanozyme for Cys detection 基于氧化酶样Mn3O4纳米酶的高灵敏度比色传感器检测Cys

IF 6.5

Sensors and Actuators Reports Pub Date : 2025-02-01 DOI: 10.1016/j.snr.2025.100296

Junting Liang , Dihan Duan , Lubing Sun , Jinming Li , Mengke Wang , Ziyi Chang , Rick F. Thorne , Chuanliang Chen , Demin Duan

{"title":"High-sensitivity colorimetric sensor based on oxidase-like Mn3O4 nanozyme for Cys detection","authors":"Junting Liang , Dihan Duan , Lubing Sun , Jinming Li , Mengke Wang , Ziyi Chang , Rick F. Thorne , Chuanliang Chen , Demin Duan","doi":"10.1016/j.snr.2025.100296","DOIUrl":"10.1016/j.snr.2025.100296","url":null,"abstract":"<div><div>Cysteine (Cys) is essential for numerous physiological processes and play a vital role in disease diagnostics, underscoring the necessity for effective and sensitive detection techniques for Cys. In this research, we introduce an ultrasensitive colorimetric approach based on oxidase-like Mn<sub>3</sub>O<sub>4</sub> nanozymes. The nanozymes were synthesized through a straightforward wet chemical method and displayed a flower-like globular morphology, showing remarkable oxidase-like catalytic performance with a low K<sub>m</sub> value of 0.1896 mM and a high V<sub>max</sub> of 2.8 × 10⁻⁷ M s⁻¹. By leveraging the outstanding catalytic activities of Mn<sub>3</sub>O<sub>4</sub> nanozymes and optimizing the TMB concentration, we developed a novel and sensitive colorimetric sensor for Cys detection. Experimental results indicated a detection range for Cys between 0.5 and 45 μM, with a lower limit of detection (LOD) of 0.02636 μM. This established method for detecting Cys reveals significant promise for the advancement of effective sensing systems.</div></div>","PeriodicalId":426,"journal":{"name":"Sensors and Actuators Reports","volume":"9 ","pages":"Article 100296"},"PeriodicalIF":6.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143334066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-frequency electrochemical impedance measurements of self-assembled monolayer formation using CMOS-based nanocapacitor arrays 利用基于cmos的纳米电容器阵列测量自组装单层的高频电化学阻抗

IF 6.5

Sensors and Actuators Reports Pub Date : 2025-02-01 DOI: 10.1016/j.snr.2025.100293

Selvaraj Chinnathambi , Mohammad Saghafi , Suryasnata Tripathy , Frans P. Widdershoven , Serge G. Lemay

引用次数: 0

SARS-COV-2 viral RNA detection through oligonucleotide-capped nanoporous anodic alumina supports. 利用寡核苷酸覆盖纳米多孔阳极氧化铝载体检测SARS-COV-2病毒RNA。

IF 6.5

Sensors and Actuators Reports Pub Date : 2025-02-01 DOI: 10.1016/j.snr.2025.100298

Alba López-Palacios , María Nieves Aranda , Isabel Caballos , Andy Hernández-Montoto , Eva Calabuig , María Dolores Gómez-Ruiz , María Ángeles Tormo-Mas , Javier Pemán , Félix Sancenón , Ramón Martínez-Máñez , Elena Aznar , Estela Climent

{"title":"SARS-COV-2 viral RNA detection through oligonucleotide-capped nanoporous anodic alumina supports.","authors":"Alba López-Palacios , María Nieves Aranda , Isabel Caballos , Andy Hernández-Montoto , Eva Calabuig , María Dolores Gómez-Ruiz , María Ángeles Tormo-Mas , Javier Pemán , Félix Sancenón , Ramón Martínez-Máñez , Elena Aznar , Estela Climent","doi":"10.1016/j.snr.2025.100298","DOIUrl":"10.1016/j.snr.2025.100298","url":null,"abstract":"<div><div>We describe herein a sensor containing nanoporous anodic alumina (NAA) as sensing platform to identify SARS-COV-2 RNA using a gating mechanism. The system is based on NAA that contains a fluorescent dye (Rhodamine B; RhB) and is capped with an oligonucleotide sequence that hybridize specifically a region of SARS-CoV-2 genome. In the presence of RNA from SARS-COV-2 virus, the oligonucleotide of the surface is displaced, uncapping the pores, and producing a delivery of RhB. The detection of the virus is achieved measuring the fluorescence of the fluorophore. The nanosensor demonstrates to be highly sensitive and selective in aqueous buffers and in biological media, having a limit of detection (LOD) of 50 ± 30 copies mL<sup>-1</sup> of SARS-CoV-2 RNA extracted from patients. Moreover, preliminary results using 18 real nasopharyngeal swab samples indicate the potential of the system to differentiate between infected and non-infected patients. Compared to the conventional RT-PCR method, in our system there is no need for sample pretreatment or RNA isolation, providing diagnostic outcomes within 60 mins while maintaining a high level of reliability.</div></div>","PeriodicalId":426,"journal":{"name":"Sensors and Actuators Reports","volume":"9 ","pages":"Article 100298"},"PeriodicalIF":6.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143348603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The design of paper-based electroanalytical microfluidic device coupled with post-synthesized molecularly imprinted polymers (rGO/Au@Ag2S/PANI/polyacrylamide) for the detection of streptomycin 基于纸张的电分析微流控装置与后合成的分子印迹聚合物（rGO/Au@Ag2S/PANI/聚丙烯酰胺）耦合用于链霉素的检测

IF 6.5

Sensors and Actuators Reports Pub Date : 2025-01-31 DOI: 10.1016/j.snr.2025.100297

Mina Adampourezare , Karim Asadpour-Zeynali , Miguel de la Guardia , Jafar Ezzati Nazhad Dolatabadi

{"title":"The design of paper-based electroanalytical microfluidic device coupled with post-synthesized molecularly imprinted polymers (rGO/Au@Ag2S/PANI/polyacrylamide) for the detection of streptomycin","authors":"Mina Adampourezare , Karim Asadpour-Zeynali , Miguel de la Guardia , Jafar Ezzati Nazhad Dolatabadi","doi":"10.1016/j.snr.2025.100297","DOIUrl":"10.1016/j.snr.2025.100297","url":null,"abstract":"<div><div>A highly sensitive three-electrode paper-based microfluidic device has been developed for determinate of streptomycin. Ag/GQD/chitosan nano ink was used to construct reference and counter electrodes and Au@Ag<sub>2</sub>S/GQD/chitosan nano ink was used to construct working electrode. rGO/Au@Ag<sub>2</sub>S/anline nano-sheets were encapsulated with acrylamide as a functional monomer to create novel nano-sized molecular imprinted polymer (MIP) and was used for the modification of electrode working.</div><div>Paper substrate was modified for forming a hydrophobic region around the hydrophilic region on the filter paper and were suitable for the evaluation of target molecules in aqueous environment. All steps of making the MIP and non-imprinted polymer (NIP) sensors are illustrated by FE-SEM, Energy-dispersive X-ray spectroscopy (EDS), and FT-IR. CV and DPV techniques were applied for the measurement of the streptomycin. The fabricated device showed high sensitivity toward streptomycin, which was due to synergistic effects between catalytic properties, electrical conductivity of rGO/Au@Ag<sub>2</sub>S/anline /Polyacrylamide, and considerably increased numbers of imprinted sites. Using these techniques, streptomycin was determined in the linear range of 1pM to 1 μM with a limit of detection of 0.9 × 10<sup>−12</sup> M (Ip (μA) = -2.075x + 31.575, R<sup>2</sup>= 0.9983). The device provided good cyclic stability (RSD < 0.05), high reproducibility and selectivity (RSD < 0.05 obtained from five calibration plots) with a good repeatability (for both milk and serum samples, RSD < 0.05). Finally, it should be noted that this device showed a good analytical performance for the detection of streptomycin in milk and serum samples.</div></div>","PeriodicalId":426,"journal":{"name":"Sensors and Actuators Reports","volume":"9 ","pages":"Article 100297"},"PeriodicalIF":6.5,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143348597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nanotechnology-driven electrochemical neurotransmitter sensing as a fundamental approach towards improving diagnostics and therapeutics: A review 纳米技术驱动的电化学神经递质传感作为改善诊断和治疗的基本方法：综述

IF 6.5

Sensors and Actuators Reports Pub Date : 2025-01-30 DOI: 10.1016/j.snr.2025.100292

Mehr Un Nisa , Asim Yaqub , Muhammad Hashim Khan , Fatima Yaseen , Shahaab Jilani , Huma Ajab , Noor S. Shah , Abdulaziz Al-Anazi

{"title":"Nanotechnology-driven electrochemical neurotransmitter sensing as a fundamental approach towards improving diagnostics and therapeutics: A review","authors":"Mehr Un Nisa , Asim Yaqub , Muhammad Hashim Khan , Fatima Yaseen , Shahaab Jilani , Huma Ajab , Noor S. Shah , Abdulaziz Al-Anazi","doi":"10.1016/j.snr.2025.100292","DOIUrl":"10.1016/j.snr.2025.100292","url":null,"abstract":"<div><div>Neurotransmitters (NTs) are endogenous chemical messengers that have a wide range of key roles throughout the nervous system. It is an important signal medium of neural transfers and equally influence physiological conditions. While, abnormal levels are linked with psychotic, physical, and neurodegenerative disorders such as ADHD, autism and tourette syndrome. Therefore, their accurate and sensitive detection is of great importance. Traditional methods of NTs detection are limited to complex sample processing, high cost, and real-time diagnostics. However, an electrochemical sensing has been extensively utilized in the past few years for NTs detection, which shows better sensitivity, selectivity, and capacity for operation in complicated biological environments, constitutes a promising approach. In this review, the most successful and favorable electrochemical sensors based on innovations in electrode materials and nanostructured surfaces having substantial improvement in the analytical performances and overcoming challenges followed by future prospects in NTs detection have been reported. This review additionally looks at the progress accomplished in biosensors for neurotransmitter evaluations in microfluidic lab-on-a-chip systems, smart wearable devices and other advanced technologies for the goal of real-time, portable diagnosis in neuroscience and clinics. These advances are paving the way for more effective applications of electrochemical sensing in neuroscience and clinical diagnostics.</div></div>","PeriodicalId":426,"journal":{"name":"Sensors and Actuators Reports","volume":"9 ","pages":"Article 100292"},"PeriodicalIF":6.5,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143334062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Laccase-mimicking Cu@CDs-enabled bioinspired immunosensor using CuO nanoparticles for voltametric detection of serum thyroxine level in patients with hyperthyroidism or hypothyroidism 漆酶模拟Cu@CDs-enabled生物启发免疫传感器使用氧化铜纳米粒子用于甲状腺机能亢进或甲状腺机能减退患者血清甲状腺素水平的伏安检测

IF 6.5

Sensors and Actuators Reports Pub Date : 2025-01-28 DOI: 10.1016/j.snr.2025.100291

Mohammad Ali Farzin, Seyed Morteza Naghib

{"title":"Laccase-mimicking Cu@CDs-enabled bioinspired immunosensor using CuO nanoparticles for voltametric detection of serum thyroxine level in patients with hyperthyroidism or hypothyroidism","authors":"Mohammad Ali Farzin, Seyed Morteza Naghib","doi":"10.1016/j.snr.2025.100291","DOIUrl":"10.1016/j.snr.2025.100291","url":null,"abstract":"<div><div>In this study, for the first time, a voltammetric bioinspired immunosensor was fabricated to determine free thyroxine (T4) based on the blocking nanozyme-dependent signaling pathway through masking the active sites of the laccase-mimicking Cu-doped CDs (Cu@CDs). The focus shifted to monitoring a vital biomarker for thyroid diseases using a metal-containing nanozyme, showcasing high potential to catalyze the oxidation of phenolic compounds. Thanks to the active sites of Cu@CD nanozyme, the electrocatalytic oxidation of hydroquinone (HQ), as a signal probe, was performed at a high rate. The CuO nanostructures also increased the conductivity as well as specific surface area of electrode. Despite signal amplification of HQ, the binding of antibody to carbon dot reduced enzymatic activity of nanozyme and subsequently resulted in a considerable decrease in the current intensity of GCE/CuO nanoparticles/Cu@CDs-HQ. The bioconjugation of T4 with anti-T4 antibody resulted in the further coverage of the active sites of nanozyme. Therefore, the current of GCE/CuO nanoparticles/Cu@CDs-HQ/Ab decreased proportionally to the T4 concentration in a DLR (dynamic linear range) of 10.0 pM-8.0 nM which comprises the reference range for free T4 (11.5–22.7 pM). The LOD (limit of detection) of 2.8 pM, was lower compared to the values reported in previous studies. Furthermore, this study exhibited the key finding that the highly specific interaction of T4 with immobilized antibody led to a remarkable diminish in the immunosensor signal compared to the interferers. More importantly, spike-recovery studies demonstrated the high potential of the designed immunosensor to detect serum T4 levels in patients with hyperthyroidism or hypothyroidism.</div></div>","PeriodicalId":426,"journal":{"name":"Sensors and Actuators Reports","volume":"9 ","pages":"Article 100291"},"PeriodicalIF":6.5,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143158331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Surface reaction mechanism and characteristics of 2-dimensional TiO2 and 0-dimensional Ag nanocomposites specialized for H2S gas sensing at room temperature 室温下H2S气敏专用二维TiO2和零维Ag纳米复合材料的表面反应机理与特性

IF 6.5

Sensors and Actuators Reports Pub Date : 2025-01-28 DOI: 10.1016/j.snr.2025.100290

Un Yup Lee , Min Young Kim , Kyu Hyoung Lee , Sol Han , Seung Yong Lee , Ali Mirzaei , Sun-Woo Choi , Myung Sik Choi , Changhyun Jin , Jeong Yun Hwang

{"title":"Surface reaction mechanism and characteristics of 2-dimensional TiO2 and 0-dimensional Ag nanocomposites specialized for H2S gas sensing at room temperature","authors":"Un Yup Lee , Min Young Kim , Kyu Hyoung Lee , Sol Han , Seung Yong Lee , Ali Mirzaei , Sun-Woo Choi , Myung Sik Choi , Changhyun Jin , Jeong Yun Hwang","doi":"10.1016/j.snr.2025.100290","DOIUrl":"10.1016/j.snr.2025.100290","url":null,"abstract":"<div><div>In this study, we provide the synthesis of pristine TiO<sub>2</sub> nanosheets (NSs) via a simple flux method and their decoration with Ag nanoparticles (NPs) using a hydrothermal method for room-temperature H<sub>2</sub>S gas sensing. Gas sensing experiments were conducted at 25 °C, evaluating the response of the Ag NPs-decorated TiO<sub>2</sub> NSs to various gases. Results demonstrated the gas sensor exhibited a superior response to H<sub>2</sub>S gas compared to other gases, outperforming the pristine TiO<sub>2</sub> NSs gas sensor. Additionally, its response to H<sub>2</sub>S gas surpassed that of the TiO<sub>2</sub> NSs gas sensor, highlighting the promising role of Ag decoration for H<sub>2</sub>S gas detection. Sensing behavior in humid atmosphere was also investigated. The improved H<sub>2</sub>S gas sensing performance can be attributed to the catalytic effect of Ag, the formation of Ag/TiO<sub>2</sub> heterojunctions, and the large surface area of the TiO<sub>2</sub> NSs. This study introduces a straightforward approach to enhance the gas sensing capabilities of metal oxide NSs.</div></div>","PeriodicalId":426,"journal":{"name":"Sensors and Actuators Reports","volume":"9 ","pages":"Article 100290"},"PeriodicalIF":6.5,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143334064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Morphology controlled fabrication of zinc phosphate hierarchical microspheres for room temperature ammonia gas sensor 室温氨气传感器用磷酸锌分级微球的形貌控制制备

IF 6.5

Sensors and Actuators Reports Pub Date : 2025-01-27 DOI: 10.1016/j.snr.2025.100288

Khalida Akhtar , Naila Zubair , Neelam Zeb , Syed Sajjad Ali Shah , Zia Ullah Khan , Hina Khalid

{"title":"Morphology controlled fabrication of zinc phosphate hierarchical microspheres for room temperature ammonia gas sensor","authors":"Khalida Akhtar , Naila Zubair , Neelam Zeb , Syed Sajjad Ali Shah , Zia Ullah Khan , Hina Khalid","doi":"10.1016/j.snr.2025.100288","DOIUrl":"10.1016/j.snr.2025.100288","url":null,"abstract":"<div><div>Hierarchical Zinc phosphate nano/microstructures with controlled morphological features were synthesized in aqueous solutions through simple and economical route without using any type of surfactant or template. SEM analysis revealed novel morphologies of the synthesized powders i.e., hierarchical microspheres, urchin like microspheres, nanoflowers and nanoellipsoids and unfolded that produced morphologies strongly depended upon the applied experimental conditions. Selected batches of the synthesized powders i.e., hierarchical microspheres, urchin like microspheres and hierarchical nanoellipsoids were selected for further analysis using XRD, FT-IR, BET analysis and gas sensing application and termed as Zinc Phosphate 1 (ZP1), Zinc Phosphate 2 (ZP2), and Zinc Phosphate 3 (ZP3), respectively. XRD results confirmed the crystalline nature of the as-prepared powders with crystallite sizes 16.5 nm, 30. 15 nm and 37.01 nm, for ZP1, ZP2 and ZP3, respectively. Evaluation of gas sensing properties of the selected samples revealed that sensors based on ZP1 showed highest gas sensing response of 89 % with response recovery time 31/12 s, towards 5 ppm ammonia at room temperature. In addition, the lowest detection limit was investigated to be <1 ppm. Because of the excellent gas sensing performance, the synthesized zinc phosphate structures could be employed as promising candidates for developing highly sensitive and selective room temperature ammonia gas sensor.</div></div>","PeriodicalId":426,"journal":{"name":"Sensors and Actuators Reports","volume":"9 ","pages":"Article 100288"},"PeriodicalIF":6.5,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143158329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0