Recent Progress on Potentiometric Sensor Applications Based on Nanoscale Metal Oxides: A Comprehensive Review DOI
Umer Shahzad, Mohsin Saeed, Hadi M. Marwani

и другие.

Critical Reviews in Analytical Chemistry, Год журнала: 2024, Номер unknown, С. 1 - 18

Опубликована: Апрель 9, 2024

Electrochemical sensors have been the subject of much research and development as late, with several publications detailing new designs boasting enhanced performance metrics. That is, without a doubt, because such stand out from other analytical tools thanks to their excellent characteristics, low cost, ease use. Their progress has shown trend toward seeking novel useful nano structure materials. A variety nanostructure metal oxides utilized in creation potentiometric sensors, which are this article. For screen-printed pH sensing layers due mixed ion-electron conductivity paste-ion-selective electrode components solid-contact electrodes. Further significant uses include layers. All oxide mentioned within purview Nanoscale potential potentiometry method, paper summarizes uses, including hybrid materials single-component Potentiometric outstanding properties can be manufactured entirely oxides. These outperform more traditional, conventional electrodes terms characteristics. In review, we looked at different building solutions various nanoscale

Язык: Английский

Obtaining of ZnO/Fe2O3 Thin Nanostructured Films by AACVD for Detection of ppb-Concentrations of NO2 as a Biomarker of Lung Infections DOI Creative Commons
Artem S. Mokrushin,

Yulia M. Gorban,

А. А. Аверин

и другие.

Biosensors, Год журнала: 2023, Номер 13(4), С. 445 - 445

Опубликована: Март 31, 2023

ZnO/Fe2O3 nanocomposites with different concentration and thickness of the Fe2O3 layer were obtained by two-stage aerosol vapor deposition (AACVD). It was shown that ZnO particles have a wurtzite structure an average size 51-66 nm, iron oxide on surface hematite 23-28 nm. According to EDX data, content in films found be 1.3-5.8 at.%. The optical properties studied, band gap 3.16-3.26 eV. Gas-sensitive at 150-300 °C studied using wide group analyte gases: CO, NH3, H2, CH4, C6H6, ethanol, acetone, NO2. A high response 100 ppm acetone ethanol 225-300 selective 300-2000 ppb NO2 175 established. effect humidity magnitude shape signal upon detection studied.

Язык: Английский

Процитировано

25

Advanced NH3 Detection by 1D Nanostructured La:ZnO Sensors with Novel Intrinsic p–n Shifting and Ultrahigh Baseline Stability DOI
Ahmad Ajjaq, Fatih Bulut, O. Öztürk

и другие.

ACS Sensors, Год журнала: 2024, Номер 9(2), С. 895 - 911

Опубликована: Янв. 31, 2024

Due to its stability, transportability, and ability be produced using renewable energy sources, NH3 has become an attractive option for hydrogen production storage. Detecting is then essential, being a toxic flammable gas that can pose dangers if not properly monitored. ZnO chemiresistive sensors have shown great potential in real monitoring applications; yet, research development this area are ongoing due reported limitations, like baseline instabilities sensitivity environmental factors, including temperature, humidity, interferent gases. Herein, we suggest approach obtain with competitive performance based on semiconducting metal oxides. For purpose, one-dimensional nanostructured pure La-doped films were synthesized hydrothermally. Incorporating large rare earth ions, La, into the bulk lattice of challenging lead surface defects influential gas-sensing reactions. The experienced temperature-induced p–n shifting at about 100 °C, verified by Hall effect AC impedance measurements. doped sensor showed exceptional stepwise stability outstanding relatively low operating temperature (150 °C) sensing response 91 best (@ 50 ppm NH3) recorded tolerance water vapor up 70% RH. Alongside shifting, enhanced was discussed correlation La doping-triggered changes nanostructural surfacial properties films. We validated proposed technique producing similar performing multiple replicates ensure consistency reproducibility. also introduced fill factor concept field as new trustworthy parameter could improve assessment help rate deviation from ideality.

Язык: Английский

Процитировано

17

Nanofibers enabled advanced gas sensors: A review DOI Creative Commons
Kening Lang, Tianyi Liu, Daniel J. Padilla

и другие.

Advanced Sensor and Energy Materials, Год журнала: 2024, Номер 3(2), С. 100093 - 100093

Опубликована: Фев. 24, 2024

The advancement of gas sensor technology over the past decades has led to remarkable progress and achievements in pollution control environmental protection. Compared with other sensing materials, electrospun nanofibers have attracted significant attention, which is mainly due their unique characteristics, including but not limited high surface area, easy structure design, facile facility setup, multifunctional properties, etc., making them outstanding candidates for potential applications this field. This review provides an overview sensors, concentrating on carbon monoxide, hydrogen, dioxide, hydrogen sulfide, ammonia, nitrogen oxides, oxygen, volatile organic compounds. It begins a brief introduction materials advantages along ongoing research. principles electrospinning are then discussed. Afterward, corresponding properties diverse sensors thoroughly reviewed. Finally, future vision regarding challenges perspectives area proposed. extensive comprehensive reference utilize advanced generate novel facilitating performance high-demand areas.

Язык: Английский

Процитировано

17

Achieving One Part Per Billion Hydrogen Sulfide (H2S) Level Detection through Optimizing Composition and Crystallinity of Gold-Decorated Tungsten Trioxide (Au-WO3) Nanofibers DOI
Bingxin Yang, Dung Thi Hanh To, Emily Resendiz Mendoza

и другие.

ACS Sensors, Год журнала: 2024, Номер 9(1), С. 292 - 304

Опубликована: Янв. 12, 2024

As a common environmental pollutant and an important breath biomarker for several diseases, it is essential to develop hydrogen sulfide gas sensor with low-ppb level detection limit prevent harmful exposure allow early diagnoses of diseases in low-resource settings. Gold doped/decorated tungsten trioxide (Au-WO3) nanofibers various compositions crystallinities were synthesized optimize H2S-sensing performance. Systematically experimental results demonstrated the ability detect 1 ppb H2S response value (Rair/Rgas) 2.01 using 5 at % Au-WO3 average grain sizes around 15 nm. Additionally, energy barrier difference sensing materials air nitrogen (ΔEb) power law exponent (n) determined be 0.36 eV 0.7, respectively, 450 °C indicating that O– predominately ionic oxygen species adsorption significantly altered Schottky between grain. Such quantitative analysis provides comprehensive understanding mechanism.

Язык: Английский

Процитировано

14

Recent Progress on Potentiometric Sensor Applications Based on Nanoscale Metal Oxides: A Comprehensive Review DOI
Umer Shahzad, Mohsin Saeed, Hadi M. Marwani

и другие.

Critical Reviews in Analytical Chemistry, Год журнала: 2024, Номер unknown, С. 1 - 18

Опубликована: Апрель 9, 2024

Electrochemical sensors have been the subject of much research and development as late, with several publications detailing new designs boasting enhanced performance metrics. That is, without a doubt, because such stand out from other analytical tools thanks to their excellent characteristics, low cost, ease use. Their progress has shown trend toward seeking novel useful nano structure materials. A variety nanostructure metal oxides utilized in creation potentiometric sensors, which are this article. For screen-printed pH sensing layers due mixed ion-electron conductivity paste-ion-selective electrode components solid-contact electrodes. Further significant uses include layers. All oxide mentioned within purview Nanoscale potential potentiometry method, paper summarizes uses, including hybrid materials single-component Potentiometric outstanding properties can be manufactured entirely oxides. These outperform more traditional, conventional electrodes terms characteristics. In review, we looked at different building solutions various nanoscale

Язык: Английский

Процитировано

14