Functionalization of gold nanoparticles by β-cyclodextrin as a probe for the detection of heavy metals in water and photocatalytic degradation of textile dye

Bindhu, M.R.; Saranya, P.; Sheeba, M.; Vijilvani, C.; Rejiniemon, T.S.; Al‐Mohaimeed, Amal M.; Gawwad, Mohamed Ragab Abdel; Elshikh, Mohamed S.

doi:10.1016/j.envres.2021.111628

Cited by 36 publications

(6 citation statements)

References 53 publications

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“…Bindhu and coworkers used β-cyclodextrin to synthesis and functionalize monodispersed uniform gold nanoparticles , their results were confirmed by using FTIR and UV-Vis microscopy and imaged by transmission electron microscopy, these functionalized cyclodextrin gold nanoparticles tested in many applications such as antibacterial action through inhibition of bacterial growth of E. coli and S. aureus in water, sensing of heavy metal as copper and photocatalytic degradation of textile dye in waste water [47].…”

Section: Gold Nanoparticles/cds Antimicrobial Applicationsmentioning

confidence: 94%

Gold Nanoparticles Incorporated with Cyclodextrins and Its Applications

Abdulaziz¹,

Salah²

2021

JBNB

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Section: Gold Nanoparticles/cds Antimicrobial Applicationsmentioning

confidence: 94%

Gold Nanoparticles Incorporated with Cyclodextrins and Its Applications

Abdulaziz¹,

Salah²

2021

JBNB

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“…Consequently, the experiment involved the modification of SH-β-CD@AuNPs with cyclodextrin sulfhydryl groups. It is known that the sulfhydryl groups on cyclodextrins readily adhere to the surface of AuNPs, forming S-Au bonds and thus ensuring the stable modification of cyclodextrins onto the AuNPs [ 62 , 63 ]. The method employed in this paper involved the use of β-CD as a reducing and stabilizing agent for the preparation of SH-β-CD@AuNPs.…”

Section: Methodsmentioning

confidence: 99%

Selective and Accurate Detection of Nitrate in Aquaculture Water with Surface-Enhanced Raman Scattering (SERS) Using Gold Nanoparticles Decorated with β-Cyclodextrins

Li,

Hu,

Wang

et al. 2024

Sensors

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A surface-enhanced Raman scattering (SERS) method for measuring nitrate nitrogen in aquaculture water was developed using a substrate of β-cyclodextrin-modified gold nanoparticles (SH-β-CD@AuNPs). Addressing the issues of low sensitivity, narrow linear range, and relatively poor selectivity of single metal nanoparticles in the SERS detection of nitrate nitrogen, we combined metal nanoparticles with cyclodextrin supramolecular compounds to prepare a AuNPs substrate enveloped by cyclodextrin, which exhibits ultra-high selectivity and Raman activity. Subsequently, vanadium(III) chloride was used to convert nitrate ions into nitrite ions. The adsorption mechanism between the reaction product benzotriazole (BTAH) of o-phenylenediamine (OPD) and nitrite ions on the SH-β-CD@AuNPs substrate was studied through SERS, achieving the simultaneous detection of nitrate nitrogen and nitrite nitrogen. The experimental results show that BTAH exhibits distinct SERS characteristic peaks at 1168, 1240, 1375, and 1600 cm−1, with the lowest detection limits of 3.33 × 10−2, 5.84 × 10−2, 2.40 × 10−2, and 1.05 × 10−2 μmol/L, respectively, and a linear range of 0.1–30.0 μmol/L. The proposed method provides an effective tool for the selective and accurate online detection of nitrite and nitrate nitrogen in aquaculture water.

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“…Quite recently, Bindu and co-workers have functionalized gold nanoparticles by the β-CD in order to detect heavy metal ions aquatic realm. Captivatingly, the sensitivity of the developed β-CD-gold nanoparticle hybrid conjugate toward copper was found to be 1.788 mM [89]. Elgamouz and teammates have functionalized silver nanoparticles by β-CD to develop a nanoprobe having the ability to encapsulate creatinine through the colorimetric response.…”

Section: Cyclodextrin-nanoparticle Hybrids As Chemical Sensorsmentioning

confidence: 98%

Cyclodextrin-Based Sensors for the Recognition of Small Molecules

Rather¹,

Hasan²,

Ali³

2023

Cyclodextrins - Core Concepts and New Frontiers

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Owing to the selective recognition ability, exceptional biocompatibility, water solubility, non-toxicity, economically inexpensive, commercial availability, and easy functionalization, cyclodextrins (CDs) act as the main building blocks for the creation of beautifully simple yet much effective supramolecular architectures of fundamental interest. Over the past few decades, CDs have engrossed a noteworthy interest in the scientific community because of their usage in the development of chemical sensors via molecular recognition phenomenon. Bearing the delightful sensing capability of CDs in mind, herewith, we envisioned to disclose the recent developments in the sensing of diverse biologically significant small molecules by CDs through colorimetric, fluorescence, electrochemical, and potentiometric response. Sensing events and corresponding distinguishing optical features in cyclodextrin-based monomers, dimers, clusters, and nano-assemblies have been elaborated in detail. The authors are of the opinion that this chapter will offer new dimensions to supramolecular sensors in general and CDs-based sensors in particular.

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Functionalization of gold nanoparticles by β-cyclodextrin as a probe for the detection of heavy metals in water and photocatalytic degradation of textile dye

Cited by 36 publications

References 53 publications

Gold Nanoparticles Incorporated with Cyclodextrins and Its Applications

Gold Nanoparticles Incorporated with Cyclodextrins and Its Applications

Selective and Accurate Detection of Nitrate in Aquaculture Water with Surface-Enhanced Raman Scattering (SERS) Using Gold Nanoparticles Decorated with β-Cyclodextrins

Cyclodextrin-Based Sensors for the Recognition of Small Molecules

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