High-performance and wearable hazardous gases sensor based on n-n heterojunction film of NGO and tetrakis(1-pyrenyl)porphyrin

Liu, Qi; Sun, Qiqi; Wei, Chuangyu; Li, Xiyou; Yu, Shou-Wen; Li, Jianfeng; Chen, Yanli

doi:10.1016/j.jhazmat.2021.126460

Cited by 22 publications

(8 citation statements)

References 70 publications

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“…des consists of generating a film on them. Some methods to do this are with Langmuir-Blodgett (LB), [41,42] Langmuir-Schaefer (LS), [43,44] or quasi-Langmuir-Schaefer (QLS) films, [45] and vacuum deposition. [46,47] On the other hand, three families of electrochemical sensors can be described depending on the electrical magnitude used for the transduction of the recognition event.…”

Section: Modified Carbon Paste Electrodes (Cpe)mentioning

confidence: 99%

Versatile Metalloporphyrin‐Based Electrochemical Sensing Applications: From Small Gasotransmitters to Macromolecules

2023

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At the beginning of his youthful sixth decade, this work is dedicated to Prof. Dr. Fabio Doctorovich. He is distinctive in organometallic chemistry. During his successful career, he has been studying the reactivity and application of metalloporphyrins. Metalloporphyrins are organometallic complexes that exhibit, through synthetic modifications, the ability to tune their optical and electrochemical properties and their selectivity towards a particular molecule or ion. For this reason, they are systems extremely useful as electrochemical sensors to detect and quantify a wide variety of analytes with high selectivity, even in real samples such as food, water, biological fluids, or pharmaceutical compounds. This review presents an up-to-date list of reports in which metalloporphyrins are used as electrochemical sensors. In addition to compiling a comprehensive and up-to-date list of reported sensors that utilize metalloporphyrins, this work aims to provide an overview of currently available tools and techniques for the detection of various chemical species through similar approaches, which are constantly being developed.

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Section: Modified Carbon Paste Electrodes (Cpe)mentioning

confidence: 99%

Versatile Metalloporphyrin‐Based Electrochemical Sensing Applications: From Small Gasotransmitters to Macromolecules

2023

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“…Over the past decade, various strategies for detecting VOCs, such as molecular engineering, 56 surface functionalization (e.g., receptors 57 and porous materials 58 ), morphology control (e.g., porosity 59 and grain boundary 60 ), and heterojunction, 61 have been reported. Among the many known VOCs (e.g., ammonia, 62−66 nitrogen dioxide (NO 2 ), 67−70 hydrogen sulfide (H 2 S), 71,72 toluene, 73 acetone, 74 and formaldehyde 59 ), NO 2 is one of the most intensively targeted gases because it can directly damage human health at ppm levels; moreover, NO 2 is the cause of many environmental problems. To effectively monitor NO 2 gas, Jin et al demonstrated an ionotronic gas-sensing sticker (IGS) that showed particularly high selectivity for NO 2 and can be used as a wearable gas-sensing platform.…”

Section: Chemical Sensorsmentioning

confidence: 99%

“…Among the many known VOCs (e.g., ammonia, − nitrogen dioxide (NO 2 ), − hydrogen sulfide (H 2 S), , toluene, acetone, and formaldehyde), NO 2 is one of the most intensively targeted gases because it can directly damage human health at ppm levels; moreover, NO 2 is the cause of many environmental problems. To effectively monitor NO 2 gas, Jin et al demonstrated an ionotronic gas-sensing sticker (IGS) that showed particularly high selectivity for NO 2 and can be used as a wearable gas-sensing platform .…”

Section: Chemical Sensorsmentioning

confidence: 99%

Recent Advances in Smart Organic Sensors for Environmental Monitoring Systems

Song

Choi

Jeon

et al. 2022

ACS Appl. Electron. Mater.

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The recent emergence of the Internet of Things (IoT) and the rise of artificial intelligence have led to substantial interest in gathering information through various sensing techniques. In particular, environmental sensing technologies implemented through the IoT have important roles in automated smart platforms. In this review, we introduce research trends and prospects for sensing technologies based on organic materials that collect information from surrounding environmental media. State-of-the-art chemical, optical, and physical organic sensors hold great promise for the realization of smart environmental systems combined with IoT network platforms.

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“…Moreover, the functionalization not only improves sensitivity but also may enhance selectivity toward specific gases even at room temperature. A wide variety of functional groups have been used, including polymers [ 18 , 19 , 20 ], metal oxides [ 21 , 22 ], metal nanoparticles [ 23 ], and small organic molecules [ 24 , 25 ]. Metalloporphyrins (MPor) and metallophthalocyanines (MPhc), as functional molecules, have attracted considerable interest due to their planar structure with metal atoms (Co, Fe, Zn, Ni, etc.)…”

Section: Introductionmentioning

confidence: 99%

Solution-Processed Functionalized Graphene Film Prepared by Vacuum Filtration for Flexible NO2 Sensors

Dieng

Nemala

et al. 2023

Sensors

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Large-scale production of graphene nanosheets (GNSs) has led to the availability of solution-processable GNSs on the commercial scale. The controlled vacuum filtration method is a scalable process for the preparation of wafer-scale films of GNSs, which can be used for gas sensing applications. Here, we demonstrate the use of this deposition method to produce functional gas sensors, using a chemiresistor structure from GNS solution-based techniques. The GNS suspension was prepared by liquid-phase exfoliation (LPE) and transferred to a polyvinylidene fluoride (PVDF) membrane. The effect of non-covalent functionalization with Co-porphyrin and Fe-phthalocyanines on the sensor properties was studied. The pristine and functionalized GNS films were characterized using different techniques such as Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), atomic force microscopy (AFM), X-ray diffraction (XRD), and electrical characterizations. The morphological and spectroscopic analyses both confirm that the molecules (Co-porphyrin and Fe-phthalocyanine) were successfully adsorbed onto the GNSs surface through π-π interactions. The chemiresistive sensor response of functionalized GNSs toward the low concentrations of nitrogen dioxide (NO2) (0.5–2 ppm) was studied and compared with those of the film of pristine GNSs. The tests on the sensing performance clearly showed sensitivity to a low concentration of NO2 (5 ppm). Furthermore, the chemical modification of GNSs significantly improves NO2 sensing performance compared to the pristine GNSs. The sensor response can be modulated by the type of adsorbed molecules. Indeed, Co-Por exhibited negative responsiveness (the response of Co-Por-GNS sensors and pristine GNS devices was 13.1% and 15.6%, respectively, after exposure to 0.5 ppm of NO2). Meanwhile, Fe-Phc-GNSs induced the opposite behavior resulting in an increase in the sensor response (the sensitivity was 8.3% and 7.8% of Fe-Phc-GNSs and pristine GNSs, respectively, at 0.5 ppm NO2 gas).

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High-performance and wearable hazardous gases sensor based on n-n heterojunction film of NGO and tetrakis(1-pyrenyl)porphyrin

Cited by 22 publications

References 70 publications

Versatile Metalloporphyrin‐Based Electrochemical Sensing Applications: From Small Gasotransmitters to Macromolecules

Versatile Metalloporphyrin‐Based Electrochemical Sensing Applications: From Small Gasotransmitters to Macromolecules

Recent Advances in Smart Organic Sensors for Environmental Monitoring Systems

Solution-Processed Functionalized Graphene Film Prepared by Vacuum Filtration for Flexible NO2 Sensors

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