Unaided-eye detection of diverse metal ions by AuNPs-based nanocomposites: A review

Manjubaashini, N.; Thangadurai, T. Daniel

doi:10.1016/j.microc.2023.108628

Cited by 6 publications

(3 citation statements)

References 209 publications

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“…These include their optical and electrochemical properties, as well as their biocompatibility and low toxicity. The utilization of gold nanoparticles (AuNPs) in the surveillance of biological phenomena occurring within living organisms has been investigated by researchers. − For example, introducing functionalized gold nanoparticles (AuNPs) into the circulatory system enables the selective targeting of cells or tissues …”

Section: Gold Nanoparticle Applications In Biosensorsmentioning

confidence: 99%

Gold Nanoparticles in Nanobiotechnology: From Synthesis to Biosensing Applications

Karnwal,

Kumar Sachan,

Devgon

et al. 2024

ACS Omega

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Nanobiotechnology has ushered in a new era of scientific discovery where the unique properties of nanomaterials, such as gold nanoparticles, have been harnessed for a wide array of applications. This review explores gold nanoparticles' synthesis, properties, and multidisciplinary applications, focusing on their role as biosensors. Gold nanoparticles possess exceptional physicochemical attributes, including size-dependent optical properties, biocompatibility, and ease of functionalization, making them promising candidates for the development of biosensing platforms. The review begins by providing a comprehensive overview of gold nanoparticle synthesis techniques, highlighting the advantages and disadvantages of various approaches. It then delves into the remarkable properties that underpin their success in biosensing, such as localized surface plasmon resonance and enhanced surface area. The discussion also includes the functionalization strategies that enable specific binding to biomolecules, enhancing the sensitivity and selectivity of gold-nanoparticle-based biosensors. Furthermore, this review surveys the diverse applications of gold nanoparticles in biosensing, encompassing diagnostics, environmental monitoring, and drug delivery. The multidisciplinary nature of these applications underscores the versatility and potential of gold nanoparticles in addressing complex challenges in healthcare and environmental science. The review emphasizes the pressing need for further exploration and research in the field of nanobiotechnology, particularly regarding the synthesis, properties, and biosensing applications of gold nanoparticles. With their exceptional physicochemical attributes and versatile functionalities, gold nanoparticles present a promising avenue for addressing complex challenges in healthcare and environmental science, making it imperative to advance our understanding of their synthesis, properties, and applications for enhanced biosensing capabilities and broader scientific innovation.

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Section: Gold Nanoparticle Applications In Biosensorsmentioning

confidence: 99%

Gold Nanoparticles in Nanobiotechnology: From Synthesis to Biosensing Applications

Karnwal,

Kumar Sachan,

Devgon

et al. 2024

ACS Omega

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“…AuNPs allow light to linger inside the cell over longer distances by scattering Sunlight. [22][23][24][25][26][27][28][29] Additionally, the quantities and qualities of localized surface plasmon resonance depend on the shape and dimension, morphology, spacing size, and distribution of nanoparticles. 30,31) Therefore, the deposition of AuNPs has the potential to improve the energy conversion efficiency of c-Si solar cell.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the effect of plasmonic Au nanoparticles on crystalline Si solar cells

Jonai,

Kobayashi,

Nakamura

et al. 2023

Jpn. J. Appl. Phys.

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In order to increase the photocurrent of tandem solar cells with a silicon (Si) solar cell as the bottom cell, we investigate the relationship between the localized surface plasmon resonance effect of gold nanoparticles (AuNPs) and the arrangement of AuNPs onto solar cells. AuNPs were deposited on P-type crystalline Si (c-Si) cells and Si heterojunction (SHJ) type cells. To obtain the localized plasmon resonance effect, the shape, size, and arrangement of the nanostructures are important. Especially, arrangement of AuNPs onto solar cells was inquired in this study because these parameters must be adjusted appropriately to produce a plasmon resonance in a specific wavelength range. It was found that the plasmon resonance effect is significant when deposited on the surface of c-Si cell rather than on top of the Ag electrode. AuNPs deposition on the c-Si cell surface leads to not only the localized plasmon resonance effect but also improvement in charge transport between the c-Si cell surface and Ag electrode. However, in the SHJ-type cells, the plasmon resonance effect was not observed because the surface layer was composed of a w-doped In2O3 (IWO) layer.

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“…The detection of polluting elements in the environment such as: air, soil and water require nanosensors of varied morphology, being able to be triangular, spherical among others; with wavelengths of absorption spectra close to 518 nm, which represents diameters of AuNPs close to 10 nm. The works that evidence a suitable morphology and size of AuNPs for environmental applications include: Manjubaashini & Daniel Thangadurai (2023), who performed a review of naked eye detection of various metal ions using nanocomposites based on AuNPs; emphasizing the importance and applications of nanocomposite AuNPs in the detection of contaminant metal ions using a colorimetric approach as well as, their optical characteristics, synthesis techniques and future research objectives. Khani et al (2022), developed a colorimetric assay for the detection of Hg 2 + ions in real water samples based on a clock reaction catalyzed by 10 nm to 15 nm AuNPs; being a fast and naked eye detection process, which opens new ways for the generation of portable nanosensors applicable to the environment.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Influence of an XY Electronic Mechanism with UV-Vis Spectroscopy on the Production of Gold Nanoparticles by Laser Ablation for Applications in Environmental Nanosensing

Carbajal-Morán¹,

Camarena²,

Alvarez³

et al. 2023

J. Ecol. Eng.

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The work consisted in analyzing the influence of an electronic positioning mechanism of an Au metal plate in the XY axes; to optimize the production of Au metal nanoparticles by laser ablation in sterile water samples as well as to obtain morphology and size required for environmental nanosensors. The positioning mechanism is constituted by two M35SP stepper motors of 5 V DC with a rotation angle of 7.5° per step; the one that generates the displacement for each axis of XY coordinates, controlled by an algorithm implemented in Arduino Nano ATmega328, being the driver of the stepper motors the H-bridge of the L298N module, with which it was possible to set the speed to 2 mm/s, which enabled to make the wear of the metal plate uniform in the process of generation of gold nanoparticles (AuNPs). With the pulsed laser generator with ablation frequency of 10 Hz and wavelengths of 532 nm and 1064 nm, the Au metal plate was irradiated for 10 min, 20 min and 30 min. AuNPs were generated in colloidal state both for the process with fixed position of the metal plate and for the process using the electronic mechanism of XY positioning; they were characterized by UV-Vis spectroscopy with range from 300 nm to 850 nm. It was found that the production of AuNPs with the Au plates mobilized by the mechanism under study, generates colloids of spherical AuNPs of smaller diameter, close to 10 nm, with an average reduction of 19% in relation to that generated with the fixed position plate; likewise, the concentration of the AuNPs increased by 20.40%; therefore, the influence of the XY positioning electronic mechanism was positive in the production of AuNPs with morphology and sizes suitable for use in environmental nanosensors.

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Unaided-eye detection of diverse metal ions by AuNPs-based nanocomposites: A review

Cited by 6 publications

References 209 publications

Gold Nanoparticles in Nanobiotechnology: From Synthesis to Biosensing Applications

Gold Nanoparticles in Nanobiotechnology: From Synthesis to Biosensing Applications

Investigation of the effect of plasmonic Au nanoparticles on crystalline Si solar cells

Analysis of the Influence of an XY Electronic Mechanism with UV-Vis Spectroscopy on the Production of Gold Nanoparticles by Laser Ablation for Applications in Environmental Nanosensing

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