Nanomaterials-Based Chemical Sensing

Joseph, Neethu; Balachandran, Manoj

doi:10.1007/978-981-16-6022-1_7

Cited by 8 publications

(2 citation statements)

References 91 publications

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“…[28]. Carbon-based nanomaterials are generally classified based on their geometric structures into three types of fullerenes (spheres as in C 60 (soccer ball) or ellipsoids as in C 70 (rugby ball)), carbon nanotubes (CNTs, tube-shaped), and graphene (single sheets of carbon atoms) [30]. Gas sensors using such materials and their derivatives have been widely demonstrated [31].…”

Section: Carbon Nanomaterialsmentioning

confidence: 99%

Wearable Nano-Based Gas Sensors for Environmental Monitoring and Encountered Challenges in Optimization

Hooshmand,

Kassanos,

Keshavarz

et al. 2023

Sensors

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With a rising emphasis on public safety and quality of life, there is an urgent need to ensure optimal air quality, both indoors and outdoors. Detecting toxic gaseous compounds plays a pivotal role in shaping our sustainable future. This review aims to elucidate the advancements in smart wearable (nano)sensors for monitoring harmful gaseous pollutants, such as ammonia (NH3), nitric oxide (NO), nitrous oxide (N2O), nitrogen dioxide (NO2), carbon monoxide (CO), carbon dioxide (CO2), hydrogen sulfide (H2S), sulfur dioxide (SO2), ozone (O3), hydrocarbons (CxHy), and hydrogen fluoride (HF). Differentiating this review from its predecessors, we shed light on the challenges faced in enhancing sensor performance and offer a deep dive into the evolution of sensing materials, wearable substrates, electrodes, and types of sensors. Noteworthy materials for robust detection systems encompass 2D nanostructures, carbon nanomaterials, conducting polymers, nanohybrids, and metal oxide semiconductors. A dedicated section dissects the significance of circuit integration, miniaturization, real-time sensing, repeatability, reusability, power efficiency, gas-sensitive material deposition, selectivity, sensitivity, stability, and response/recovery time, pinpointing gaps in the current knowledge and offering avenues for further research. To conclude, we provide insights and suggestions for the prospective trajectory of smart wearable nanosensors in addressing the extant challenges.

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Section: Carbon Nanomaterialsmentioning

confidence: 99%

Wearable Nano-Based Gas Sensors for Environmental Monitoring and Encountered Challenges in Optimization

Hooshmand,

Kassanos,

Keshavarz

et al. 2023

Sensors

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“…Indirubin and indigtone are produced from the leaf extract and are useful in treating hydrophobia (19). Photochemical study reveals that the aqueous extract of this plant includes alkaloids, amino acids, flavonoids, saponins, steroids, glycosides, carbohydrates, tannins, phenolic group, and proteins, all of which have antioxidant, antimicrobial, and anticancer properties (20). Apart from these reported findings, herein our work, we report on its highly fluorescent behavior, which was utilized for fluorescence-based sensing of toxic heavy metal ions like Pb 2+ .…”

Section: Introductionmentioning

confidence: 99%

Green Synthesized Fluorescent Nano-Carbon Derived from Indigofera Tinctora (L.) Leaf Extract for Sensing of Pb²⁺ Ions

Joseph¹

2022

ECS Trans.

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Plant-based synthesis of nanomaterials is a more reliable method since it is easy, quick, and environmentally friendly, and it does not require any specific conditions, unlike other methods. For the first time, we report the sensing of metal ions using a fluorescent nano-carbon material via a plant-based synthesis from the medicinal plant, Indigofera tinctora (L.) (IBLH). This nanomaterial from the leaf extract of IBLH was synthesized by hydrothermal assisted green synthesis method. The as-synthesized sample was characterized by various spectroscopic techniques for confirming the formation of nano-carbon material. Optical studies revealed that IBLH was influential in determining toxic heavy metal ions (Pb2+). Detection of Pb2+ was observed from a range of 1M to as low as 1nM using IBLH as the probe. Stern-Volmer plot exhibits the progressive detection of the metal ion, proving that the IBLH nano-carbon material is capable of progressive sensing of various heavy metal ions.

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Titania Doped CDs as Effective CT‐DNA Binders: A Novel Fluorescent Probe via Green Synthesis

W. N,

Joseph,

Varghese

et al. 2024

Part & Part Syst Charact

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Carbon dots (CDs), which belong to the class of zero‐dimensional carbon‐based nanomaterials, have garnered significant interest owing to their wide array of applications spanning from the electronics industry to the healthcare sector. This work employs a facile, inexpensive approach to synthesize green luminescent carbon dots (J‐10) from a potential medicinal plant named Justicia Wynaadensis by the one‐step hydrothermal method. A nanocomposite (JT‐10) of the CDs is prepared by adding TiO2 nanoparticles derived from green synthesis of Lavandula leaves. The J‐10 and JT‐10 are further characterized by X‐ray Diffraction spectroscopy (XRD), Transmission Electron Microscopy (TEM), Raman analysis X‐ray Photoelectron Spectroscopy (XPS), and Fourier transform infrared techniques (FTIR), UV–vis spectroscopy, Photoluminescence (PL), and Fluorescence or PL lifetime analysis. The average size of synthesized CDs is 1.85 nm and exhibits an excitation‐dependent fluorescence nature at 320 nm. PL lifetime analysis of J‐10 and JT‐10 is calculated to be 5.80 and 2.84 ns respectively. Offering these unique optical properties and biocompatibility, the synthesised material is suitable for investigating their binding affinity and interaction mechanisms with DNA. The use of JT‐10 in DNA binding studies contributes to the development of sustainable and efficient nanomaterials for applications in biosensors, drug delivery, and gene therapy.

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Nanomaterials-Based Chemical Sensing

Cited by 8 publications

References 91 publications

Wearable Nano-Based Gas Sensors for Environmental Monitoring and Encountered Challenges in Optimization

Wearable Nano-Based Gas Sensors for Environmental Monitoring and Encountered Challenges in Optimization

Green Synthesized Fluorescent Nano-Carbon Derived from Indigofera Tinctora (L.) Leaf Extract for Sensing of Pb²⁺ Ions

Titania Doped CDs as Effective CT‐DNA Binders: A Novel Fluorescent Probe via Green Synthesis

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Nanomaterials-Based Chemical Sensing

Cited by 8 publications

References 91 publications

Wearable Nano-Based Gas Sensors for Environmental Monitoring and Encountered Challenges in Optimization

Wearable Nano-Based Gas Sensors for Environmental Monitoring and Encountered Challenges in Optimization

Green Synthesized Fluorescent Nano-Carbon Derived from Indigofera Tinctora (L.) Leaf Extract for Sensing of Pb2+ Ions

Titania Doped CDs as Effective CT‐DNA Binders: A Novel Fluorescent Probe via Green Synthesis

Contact Info

Product

Resources

About

Green Synthesized Fluorescent Nano-Carbon Derived from Indigofera Tinctora (L.) Leaf Extract for Sensing of Pb²⁺ Ions