In vitro cytotoxicity of carbon black nanoparticles synthesized from solution plasma on human lung fibroblast cells

Panomsuwan, Gasidit; Chokradjaroen, Chayanaphat; Rujiravanit, Ratana; Ueno, Tomonaga; Saito, Nagahiro

doi:10.7567/jjap.57.0102bg

Cited by 10 publications

(3 citation statements)

References 30 publications

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“…However, the emissions of C 2 swan band (440 nm) and • CH (431 nm) could be observed in the solution with ethanol, due to the dissociation of ethanol vapor. This evidence shows benefit in the synthesis of carbon nanomaterials via the solution plasma process, similar to the systems with other organic solvents [ 27 , 62 ]. According to the evidence previously showed, it pointed out that the choice of solutions, which include conductivity, pH, and type of ions, exhibits a significant effect on the properties of plasmas in liquids.…”

Section: Solution Plasma Process (Spp): Chemistry and Influencing Parametersmentioning

confidence: 88%

Insight on Solution Plasma in Aqueous Solution and Their Application in Modification of Chitin and Chitosan

Chokradjaroen

Niu

Panomsuwan

et al. 2021

IJMS

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Sustainability and environmental concerns have persuaded researchers to explore renewable materials, such as nature-derived polysaccharides, and add value by changing chemical structures with the aim to possess specific properties, like biological properties. Meanwhile, finding methods and strategies that can lower hazardous chemicals, simplify production steps, reduce time consumption, and acquire high-purified products is an important task that requires attention. To break through these issues, electrical discharging in aqueous solutions at atmospheric pressure and room temperature, referred to as the “solution plasma process”, has been introduced as a novel process for modification of nature-derived polysaccharides like chitin and chitosan. This review reveals insight into the electrical discharge in aqueous solutions and scientific progress on their application in a modification of chitin and chitosan, including degradation and deacetylation. The influencing parameters in the plasma process are intensively explained in order to provide a guideline for the modification of not only chitin and chitosan but also other nature-derived polysaccharides, aiming to address economic aspects and environmental concerns.

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Section: Solution Plasma Process (Spp): Chemistry and Influencing Parametersmentioning

confidence: 88%

Insight on Solution Plasma in Aqueous Solution and Their Application in Modification of Chitin and Chitosan

Chokradjaroen

Niu

Panomsuwan

et al. 2021

IJMS

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“…However, carbon black has already been used for biocompatible strain sensors and flexible bioelectrodes, [50,51] and the one used in this study showed high cell viability (100%) at a concentration of 32.5 µg mL −1 during an in vitro cytotoxicity study. [52] Additionally, as there is no evidence that the CSMP composite is nontoxic, an in vitro cytotoxicity test was performed (according to ISO 10993-5:2009 Biological Evaluation of Medical Devices -Part 5). The results showed the cytocompatibility of the material for at least 284 min, the maximum time duration of a cardiac ablation procedure (Document S1, Supporting Information).…”

Section: Fabrication Methodsmentioning

confidence: 99%

A Variable Stiffness Magnetic Catheter Made of a Conductive Phase‐Change Polymer for Minimally Invasive Surgery

Piskarev

Shintake

Chautems

et al. 2022

Adv Funct Materials

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Variable stiffness (VS) is an important feature that significantly enhances the dexterity of magnetic catheters used in minimally invasive surgeries. Existing magnetic catheters with VS consist of sensors, heaters, and tubular structures filled with low melting point alloys, which have a large stiffness change ratio but are toxic to humans. In this paper, a VS magnetic catheter is described for minimally invasive surgery; the catheter is based on a novel variable stiffness thread (VST), which is made of a conductive shape memory polymer (CSMP). The CSMP is nontoxic and simultaneously serves as a heater, a temperature sensor, and a VS substrate. The VST is made through a new scalable fabrication process, which consists of a dipping technique that enables the fabrication of threads with the desired electrical resistance and thickness (with a step size of 70 µm). Selective bending of a multisegmented VST catheter with a diameter of 2.0 mm under an external magnetic field of 20 mT is demonstrated. Compared to existing proof-of-concept VS catheters for cardiac ablation, each integrated VST segment has the lowest wall thickness of 0.75 mm and an outer diameter of 2.0 mm. The segment bends up to 51° and exhibits a stiffness change factor of 21.

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“…This approach offers several advantages, including a simple process, short synthesis time, operation at atmospheric pressure and room temperature, and low energy and chemical consumptions . So far, SP has been applied to synthesizing numerous materials, such as heteroatom-doped carbon, metal/carbon composite, amino-modified carbon, and metal nanoparticles. − However, so far, SP does not appear to have been applied to the simultaneous synthesis and surface modification of metal/carbon catalysts.…”

Section: Introductionmentioning

confidence: 99%

Facile In Situ Synthesis of Amphiphilic Carbon-Supported Pt: Innovative Catalyst Preparation for Proton Exchange Membrane Fuel Cells

Tipplook

Panomsuwan

Muta

et al. 2021

ACS Appl. Energy Mater.

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Carbon materials are widely utilized to support platinum (Pt) catalysts for proton exchange membrane fuel cells (PEMFCs). However, carbon surfaces generally promote hydrophobicity, which limits the transport of active species and lowers the efficiency of PEMFCs. Consequently, functional groups should be introduced on the carbon surface to create transport channels. One promising strategy is to modify the amphiphilic functional group on a carbon surface. In this study, the liquid-phase plasma process was applied to realizing a facile one-step synthesis of amphiphilic functional group-modified carbon-supported platinum (Am@C/Pt) to serve as a catalyst. This novel synthesis strategy provides several advantages over conventional processes, such as reducing the number of steps and minimizing the chemical and energy consumptions. Experimental results revealed that the PEMFCs' efficiency with Am@ C/Pt is mainly controlled by the number of hydrophilic and hydrophobic characters on the carbon surface. A single PEMFC demonstrated a maximum current and power density of 2.41 A cm −2 and 1.68 W cm −2 , respectively, at 0.7 V, which was significantly higher than those of commercially available carbon-supported Pt catalysts. Furthermore, Am@C/Pt demonstrated superior durability after 5000 test cycles.

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In vitro cytotoxicity of carbon black nanoparticles synthesized from solution plasma on human lung fibroblast cells

Cited by 10 publications

References 30 publications

Insight on Solution Plasma in Aqueous Solution and Their Application in Modification of Chitin and Chitosan

Insight on Solution Plasma in Aqueous Solution and Their Application in Modification of Chitin and Chitosan

A Variable Stiffness Magnetic Catheter Made of a Conductive Phase‐Change Polymer for Minimally Invasive Surgery

Facile In Situ Synthesis of Amphiphilic Carbon-Supported Pt: Innovative Catalyst Preparation for Proton Exchange Membrane Fuel Cells

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