Preparation of flexible VOC sensor based on carbon nanotubes and gold nanoparticles

Taşaltın, Cihat; Başarír, Fevzihan

doi:10.1016/j.snb.2013.12.063

Cited by 72 publications

(44 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An ideal sensor should meet the following significant criteria: i) operation at room temperature in an ambient environment; ii) fast response and recovery times without an external stimulus (e.g. UV lamp); iii) high sensitivity with a low detection limit; iv) high reproducibility with repeatable responses; v) cost effective and easy‐to‐fabricate; vi) low‐voltage (<5 V) power design; and vii) biocompatible and eco‐friendly …”

Section: Nanomaterial‐based Flexible Sensors For Volatolomic Applicatmentioning

confidence: 99%

“…Active materials for flexible sensors include metal nanoparticles, several NWs, CNTs and graphene, rubber dielectric layers, porous silicon and organic chemiresistors and field‐effect transistors . The diversity of stretchable substrates, such as polyimide and polydimethylsiloxane (PDMS) adds an additional control to the design and performance of the sensors towards the targeted use.…”

Section: Nanomaterial‐based Flexible Sensors For Volatolomic Applicatmentioning

confidence: 99%

See 1 more Smart Citation

Nanoscale Sensor Technologies for Disease Detection via Volatolomics

Vishinkin

Haick

2015

Small

167

209

View full text Add to dashboard Cite

The detection of many diseases is missed because of delayed diagnoses or the low efficacy of some treatments. This emphasizes the urgent need for inexpensive and minimally invasive technologies that would allow efficient early detection, stratifying the population for personalized therapy, and improving the efficacy of rapid bed-side assessment of treatment. An emerging approach that has a high potential to fulfill these needs is based on so-called "volatolomics", namely, chemical processes involving profiles of highly volatile organic compounds (VOCs) emitted from body fluids, including breath, skin, urine and blood. This article presents a didactic review of some of the main advances related to the use of nanomaterial-based solid-state and flexible sensors, and related artificially intelligent sensing arrays for the detection and monitoring of disease with volatolomics. The article attempts to review the technological gaps and confounding factors related to VOC testing. Different ways to choose nanomaterial-based sensors are discussed, while considering the profiles of targeted volatile markers and possible limitations of applying the sensing approach. Perspectives for taking volatolomics to a new level in the field of diagnostics are highlighted.

show abstract

Section: Nanomaterial‐based Flexible Sensors For Volatolomic Applicatmentioning

confidence: 99%

Section: Nanomaterial‐based Flexible Sensors For Volatolomic Applicatmentioning

confidence: 99%

Nanoscale Sensor Technologies for Disease Detection via Volatolomics

Vishinkin

Haick

2015

Small

167

209

View full text Add to dashboard Cite

show abstract

“…The gas-sensing of volatile organic compounds (VOCs), such as benzene, toluene, and xylene, is important for the air safety of indoor environments [4][5][6]. The detection and quantification of odorant molecules from fruits are useful for quality control in agriculture, due to reports that fragrance intensity may be related to the maturity of fruits [7,8].…”

Section: Introductionmentioning

confidence: 99%

Detection of Odorant Molecules in the Gaseous Phase Using α-, β-, and γ-Cyclodextrin Films on a Quartz Crystal Microbalance

et al. 2018

View full text Add to dashboard Cite

Abstract:There is an interest in sensors for the detection of odorant molecules in the gaseous phase, especially those related to the fragrance of fruits, because odorant sensing is useful for on-site quality control of agricultural products. Previously, gas-chromatographic methods requiring bench-top devices were used for odorant-molecule detection. Herein, we report an odorant sensor based on cyclodextrins (CDs) as a stable odorant receptor, using a highly mass-sensitive and quantitative 27-MHz quartz crystal microbalance (QCM) device, which has the advantage of possible incorporation into portable devices. When ethyl butyrate (a model odorant molecule for fruit fragrances) was flowed onto a QCM plate modified with α-, β-, or γ-CD network films, a decrease in frequency was observed (corresponding to an increase in mass), owing to the capture of odorant molecules by CD molecules. The CD films were capable of capturing and releasing odorant molecules, depending on the type of CD (α-, β-, or γ-CD). Thus, these sensors are reusable for odorant-molecule sensing, and are applicable to pattern recognition of odorant molecules. Thus, sensors based on CD films combined with a QCM handheld device could be applied to monitoring the condition of fruits.

show abstract

“…These disadvantages are caused by strong interactions between the analyte gaseous molecules and CNTs, making their desorption difficult [11–12]. …”

Section: Introductionmentioning

confidence: 99%

Gas sensing properties of MWCNT layers electrochemically decorated with Au and Pd nanoparticles

Dilonardo¹,

Penza²,

Alvisi³

et al. 2017

Beilstein J. Nanotechnol.

View full text Add to dashboard Cite

Multiwalled carbon nanotube (MWCNT)-based chemiresistors were electrochemically decorated with Au and Pd nanoparticles (NPs), resulting in an improvement in the detection of gaseous pollutants as compared to sensors based on pristine MWCNTs. Electrophoresis was used to decorate MWCNTs with preformed Au or Pd NPs, thus preserving their nanometer-sized dimensions and allowing the metal content to be tuned by simply varying the deposition time. The sensing response of unmodified and metal-decorated MWCNTs was evaluated towards different gaseous pollutants (e.g., NO2, H2S, NH3 and C4H10) at a wide range of concentrations in the operating temperature range of 45–200 °C. The gas sensing results were related to the presence, type and loading of metal NPs used in the MWCNT functionalization. Compared to pristine MWCNTs, metal-decorated MWCNTs revealed a higher gas sensitivity, a faster response, a better stability, reversibility and repeatability, and a low detection limit, where all of these sensing properties were controlled by the type and loading of the deposited metal catalytic NPs. Specifically, in the NO2 gas sensing experiments, MWCNTs decorated with the lowest Au content revealed the highest sensitivity at 150 °C, while MWCNTs with the highest Pd loading showed the highest sensitivity when operated at 100 °C. Finally, considering the reported gas sensing results, sensing mechanisms have been proposed, correlating the chemical composition and gas sensing responses.

show abstract

Preparation of flexible VOC sensor based on carbon nanotubes and gold nanoparticles

Cited by 72 publications

References 47 publications

Nanoscale Sensor Technologies for Disease Detection via Volatolomics

Nanoscale Sensor Technologies for Disease Detection via Volatolomics

Detection of Odorant Molecules in the Gaseous Phase Using α-, β-, and γ-Cyclodextrin Films on a Quartz Crystal Microbalance

Gas sensing properties of MWCNT layers electrochemically decorated with Au and Pd nanoparticles

Contact Info

Product

Resources

About