A comparative study of electrochemical and biointerfacial properties of acid- and plasma-treated single-walled carbon-nanotube-film electrode systems for use in biosensors

Kim, Joon Hyub; Song, Min; Lee, Cheol Jin; Lee, Jae Hyeok; Kim, Jae Ho; Min, Nam Ki

doi:10.1016/j.carbon.2012.09.050

Cited by 20 publications

(17 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this way, the production of functional groups to link the enzyme has been studied. Although acid treatment has been reported as the main strategy, the O 2 plasma emerged as an alternative to produce such functional groups [10]. Comparing acidand O 2 -plasma-treated SWCNTs revealed that the latter exhibited higher sensitivity and lower limit of detection for glucose sensor.…”

Section: Amidationmentioning

confidence: 99%

Enhancing the Surface Sensitivity and Selectivity: Functionalization of Carbon Nanomaterials

Blondeau

2014

Carbon for Sensing Devices

View full text Add to dashboard Cite

Section: Amidationmentioning

confidence: 99%

Enhancing the Surface Sensitivity and Selectivity: Functionalization of Carbon Nanomaterials

Blondeau

2014

Carbon for Sensing Devices

View full text Add to dashboard Cite

“…[42] Oxygen plasma treatment has emerged as an alternative methodf or CNT oxidation. [43] Ad isadvantageo ft his methodi st he disturbance of the conjugated sp 2 network, which can have adverse effects on electron-transport properties. Vµzquez et al explored ball-millinga sam ethod to make SWCNTsd ispersible in water,w hile avoiding sidewall defects common in acid oxidation.…”

Section: Cnt Transducersmentioning

confidence: 99%

Carbon Nanotube Based Gas Sensors toward Breath Analysis

Ellis

Star

2016

ChemPlusChem

View full text Add to dashboard Cite

Breath analysis is a promising method for rapid, inexpensive, noninvasive disease diagnosis and health monitoring owing to the correlative relationship between breath biomarker concentrations and abnormal health conditions. However, current methods to identify and quantify breath components rely on large, bench‐top analytical instruments. Carbon nanotube (CNT)‐based gas sensors are desirable candidates to replace benchtop instruments because of their sensitive chemical‐to‐electrical transducer capability, high degree of chemical functionality options, and potential for miniaturization. This review seeks to give an overview of the synthetic methods used to functionalize CNT‐based gas sensors, specifically those sensors that target biologically relevant breath markers. Specific examples are provided to highlight the sensing mechanisms behind different classes of CNT hybrid composites. Finally, the current challenges and prospective solutions of applying CNT‐based sensors to breath analysis are discussed.

show abstract

“…The CNT surface can be modified by changing its chemical composition using chemical and plasma treatments [21][22][23]. Both treatments introduce oxygenated functional groups into the SWCNTs but produce different effects on the metallic and semiconducting SWCNT surfaces [21,24].…”

Section: Introductionmentioning

confidence: 99%

Effect of Varying the Semiconducting/Metallic Tube Ratio on the Performance of Mixed Single-Walled Carbon Nanotube Network Gas Sensors

Min

Kim

et al. 2017

Journal of Nanomaterials

Self Cite

View full text Add to dashboard Cite

The sensing properties of mixed networks consisting of semiconducting and metallic single-walled carbon nanotubes (SWCNTs) have been found to largely vary depending on the ratio of semiconducting to metallic tubes. Solution-deposited 99% semiconductor-enriched nanotube networks exhibited a sensitivity of 1.908%/ppm, whereas the unenriched 66% and 90% enriched samples exhibited a sensitivity of 0.027%/ppm and 0.113%/ppm, respectively. These results suggest that it is extremely important to minimize the metallic pathways to achieve high sensitivity. After an oxygen plasma treatment, the unenriched 66% sample exhibited a 526% increase in sensitivity (0.142%/ppm) compared to the untreated one, whereas the 90% device demonstrated a sensitivity of 1.521%/ppm, which corresponds to an improvement in the sensitivity of 13.5 times the pristine 90% sample. In addition, the plasma-treated sensors exhibited a much faster response time than the untreated one. The significant improvement in the performance of the highly enriched network sensors was explained by the large increase in the anchoring sites for ammonia molecules on the surface of the semiconducting single-walled CNTs and the faster charge transfer from absorbed molecules.

show abstract

A comparative study of electrochemical and biointerfacial properties of acid- and plasma-treated single-walled carbon-nanotube-film electrode systems for use in biosensors

Cited by 20 publications

References 23 publications

Enhancing the Surface Sensitivity and Selectivity: Functionalization of Carbon Nanomaterials

Enhancing the Surface Sensitivity and Selectivity: Functionalization of Carbon Nanomaterials

Carbon Nanotube Based Gas Sensors toward Breath Analysis

Effect of Varying the Semiconducting/Metallic Tube Ratio on the Performance of Mixed Single-Walled Carbon Nanotube Network Gas Sensors

Contact Info

Product

Resources

About