Current challenges in nanomaterial-based sensors for online monitoring of drinking water by surface plasmon resonance

Wunderlich, Lukas; Hirsch, Thomas

doi:10.1016/j.coesh.2022.100326

Cited by 7 publications

(3 citation statements)

References 77 publications

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“…Because of the rapid development of materials science and nanotechnology, several nanomaterials have been highlighted as potential sensor probes that can accurately detect or monitor various water pollutants. 14 Among them, gold nanoparticles (AuNPs) are stable nanomaterials under harsh conditions; therefore, they have been extensively investigated for various applications, including the detection of water pollutants. In particular, AuNPs have a high extinction coefficient and can change color via the dispersion-induced shift of surface plasmon resonance (SPR).…”

Section: Introductionmentioning

confidence: 99%

“…Rapid on-site tests have emerged as promising technologies for water quality and safety analysis because these methods use antibodies, enzymes, and aptamers, which can specifically recognize water pollutants with high sensitivity and selectivity. Because of the rapid development of materials science and nanotechnology, several nanomaterials have been highlighted as potential sensor probes that can accurately detect or monitor various water pollutants. , …”

Section: Introductionmentioning

confidence: 99%

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Gold Nanoparticles as Exquisite Colorimetric Transducers for Water Pollutant Detection

Cho

Jung

Heo

et al. 2023

ACS Appl. Mater. Interfaces

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Gold nanoparticles (AuNPs) are useful nanomaterials as transducers for colorimetric sensors because of their high extinction coefficient and ability to change color depending on aggregation status. Therefore, over the past few decades, AuNP-based colorimetric sensors have been widely applied in several environmental and biological applications, including the detection of water pollutants. According to various studies, water pollutants are classified into heavy metals or cationic metal ions, toxins, and pesticides. Notably, many researchers have been interested in AuNP that detect water pollutants with high sensitivity and selectivity, while offering no adverse environmental issues in terms of AuNP use. This review provides a representative overview of AuNP-based colorimetric sensors for detecting several water pollutants. In particular, we emphasize the advantages of AuNP as colorimetric transducers for water pollutant detection in terms of their low toxicity, high stability, facile processability, and unique optical properties. Next, we discuss the status quo and future prospects of AuNP-based colorimetric sensors for the detection of water pollutants. We believe that this review will promote research and development of AuNP as next-generation colorimetric transducers for water pollutant detection.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Gold Nanoparticles as Exquisite Colorimetric Transducers for Water Pollutant Detection

Cho

Jung

Heo

et al. 2023

ACS Appl. Mater. Interfaces

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“…The light whose wavelength falls on the PBG cannot propagate, which satisfies Bragg diffraction . Due to the special structure of the PBG, PC materials have distinct structure color, which is different from chemical dyes. , Yu et al used P (St-BA-MAA) microsphere latex to obtain PC patterns with bright structure color through simple printing methods, which was expected to replace traditional dyes to be added to ordinary products for application. − The structure color of PCs could be used as labels to identify substances or molecules, which has developed the application of PCs in sensors. − The PC hydrogel has a unique property that the PBG can be tuned with the external stimulus because of the presence of a responsive hydrogel. − Kang et al prepared hydrogel PCs based on hydroxyethyl methacrylate (HEMA) by prism holographic lithography and explored the thermal response optical behavior . Hydrogels with a PC structure underwent elastic deformation under temperature change, resulting in diffraction wavelength displacement.…”

Section: Introductionmentioning

confidence: 99%

Inverse Opal Photonic Crystals for Real-Time Identifiable Labels via Ultraviolet and Near-Infrared Light

Yang

Chen

et al. 2023

ACS Appl. Polym. Mater.

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In this work, we developed inverse opal photonic crystals (IOPCs) for real-time identifiable labels by tuning the structure color and chemical color under ultraviolet (UV) light and near-infrared (NIR) light. We prepared IOPCs by etching a silica photonic crystal template in thermosensitive hydrogel added to 2,2-diphenyl-2H-naphtho [1,2-b] pyran-6-carbaldehyde (NP). In this way, the transparent hydrogel turned red under UV light due to the photochromic naphthopyran. Meanwhile, the green structure color of IOPCs was superimposed with the red chemical color of the hydrogel, so that IOPCs with naphthopyran (IOPCs/ NP) appeared yellow. When irradiated by NIR light, the structure color of IOPCs turned blue from green due to the volume contraction of the thermosensitive hydrogel. When irradiated by UV and NIR light simultaneously, the blue structure color of IOPCs was superimposed with the red chemical color of the hydrogel, and the IOPCs/NP would finally appear purple. Thus, we realized the real-time controllable IOPCs by two light sources. Based on this, we designed a series of identifiable labels with multiple colors under UV and NIR light, which expanded the application of information anticounterfeiting and identification.

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Nanomaterials for Air and Water Purification

de Siqueira Brandão Vaz

2024

Nanomaterials for Air‐ and Water Purification

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Current challenges in nanomaterial-based sensors for online monitoring of drinking water by surface plasmon resonance

Cited by 7 publications

References 77 publications

Gold Nanoparticles as Exquisite Colorimetric Transducers for Water Pollutant Detection

Gold Nanoparticles as Exquisite Colorimetric Transducers for Water Pollutant Detection

Inverse Opal Photonic Crystals for Real-Time Identifiable Labels via Ultraviolet and Near-Infrared Light

Nanomaterials for Air and Water Purification

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