Colloidal Stability in Water of Modified Carbon Nanotube: Comparison of Different Modification Techniques

Seneewong-Na-Ayutthaya, Montira; Pongprayoon, Thirawudh; O’Rear, Edgar A.

doi:10.1002/macp.201600334

Cited by 5 publications

(3 citation statements)

References 47 publications

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“…Higher turbidity indicates better dispersibility of the nanoparticles in the solvents. Additionally, dispersions maintaining consistent turbidity levels over time indicate greater stability . Turbidity was measured in terms of nephelometric turbidity units (NTUs) using a nephelometer.…”

Section: Resultsmentioning

confidence: 99%

“…Additionally, dispersions maintaining consistent turbidity levels over time indicate greater stability. 30 Turbidity was measured in terms of nephelometric turbidity units (NTUs) using a nephelometer. Figure S1 illustrates the turbidity plots for borophene nanosheet dispersions in solvents with EtOH volume fractions ranging from 0 to 100%.…”

Section: ■ Introductionmentioning

confidence: 99%

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Functionalized Borophene Quantum Dots for Fluorescence Sensing of Folic Acid

Barman,

Goswami,

Sultana

et al. 2024

ACS Appl. Nano Mater.

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Borophene has undergone extensive exploration in recent years for potential applications in sensing, electronics, optoelectronics, and energy storage due to its promising properties. However, the existing synthesis methods, such as molecular beam epitaxy, chemical vapor deposition, and physical vapor deposition, are expensive and challenging to implement. Therefore, it is important to establish simple and scalable synthesis approaches for borophene nanosheets to realize their diverse applications. In this study, we utilized a mixed-solvent-based liquid phase exfoliation strategy using a solvent mixture containing 50% ethanol and 50% water for borophene nanosheet synthesis. Furthermore, we performed surface modifications of these nanosheets using arginine (Arg) molecules, leading to the formation of Arg-functionalized borophene quantum dots (B-Arg). These B-Arg quantum dots were used as a fluorescent probe for detecting folic acid (FA) in various media, including aqueous solutions, human blood serum (HBS), artificial urine (AU), and FA tablet solutions. The observed detection limits were approximately 14.91 nM, 14.22 nM, 14.32 nM, and 14.94 nM for aqueous media, HBS, AU, and FA tablets, respectively, for the linear concentration range of 0−6.66 μM.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Functionalized Borophene Quantum Dots for Fluorescence Sensing of Folic Acid

Barman,

Goswami,

Sultana

et al. 2024

ACS Appl. Nano Mater.

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show abstract

“…The challenges to the dispersion of nanotubes in water can be successfully overcome with surfactants and some polymers [ 55 , 56 , 57 ]. The choice and amount of surfactant are important [ 58 ].…”

Section: Functionalization Of Multiwalled Carbon Nanotubesmentioning

confidence: 99%

Mechanical Strength and Conductivity of Cementitious Composites with Multiwalled Carbon Nanotubes: To Functionalize or Not?

O’Rear,

Onthong,

Pongprayoon

2023

Nanomaterials

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The incorporation of carbon nanotubes into cementitious composites increases their compressive and flexural strength, as well as their electrical and thermal conductivity. Multiwalled carbon nanotubes (MWCNTs) covalently functionalized with hydroxyl and carboxyl moieties are thought to offer superior performance over bare nanotubes, based on the chemistry of cement binder and nanotubes. Anionic carboxylate can bind to cationic calcium in the hydration products, while hydroxyl groups participate in hydrogen bonding to anionic and nonionic oxygen atoms. Results in the literature for mechanical properties vary widely for both bare and modified filler, so any added benefits with functionalization are not clearly evident. This mini-review seeks to resolve the issue using an analysis of reports where direct comparisons of cementitious composites with plain and functionalized nanotubes were made at the same concentrations, with the same methods of preparation and under the same conditions of testing. A focus on observations related to the mechanisms underlying the enhancement of mechanical strength and conductivity helps to clarify the benefits of using functionalized MWCNTs.

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Colloidal chemistry as a guide to design intended dispersions of carbon nanomaterials

Damasceno

Kubota²

2021

Materials Today Chemistry

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Colloidal Stability in Water of Modified Carbon Nanotube: Comparison of Different Modification Techniques

Cited by 5 publications

References 47 publications

Functionalized Borophene Quantum Dots for Fluorescence Sensing of Folic Acid

Functionalized Borophene Quantum Dots for Fluorescence Sensing of Folic Acid

Mechanical Strength and Conductivity of Cementitious Composites with Multiwalled Carbon Nanotubes: To Functionalize or Not?

Colloidal chemistry as a guide to design intended dispersions of carbon nanomaterials

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