Development of an ozone gas sensor using single-walled carbon nanotubes

Park, Young-Min; Dong, Ki Young; Lee, Jun Young; Choi, Jinnil; Bae, Gwi Nam; Ju, Byeong Kwon

doi:10.1016/j.snb.2009.04.055

Cited by 56 publications

(25 citation statements)

References 19 publications

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“…The responses of the sensor were studied within the test chamber with an inlet and an outlet. The gas-sensor response (S) for a given gas is typically defined as follows: [19] …”

Section: Methodsmentioning

confidence: 99%

Microwave-assisted synthesis of ZnO/MWCNT hybrid nanocomposites and their alcohol-sensing properties

Potirak

Pecharapa

Techitdheera

2013

Journal of Experimental Nanoscience

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Zinc oxide and multi-walled carbon nanotube (ZnO/MWCNT) hybrid nanocomposites were synthesised by microwave-assisted method using the mixed solution of zinc acetate dehydrate (Zn(CH 3 COO) 2 Á2H 2 O) and treated MWCNTs. The syntheses were carried out at various microwave irradiation powers. The characterisation of the as-synthesised nanocomposites was conducted by powder X-ray diffraction (XRD) and scanning electron microscopy (SEM). The XRD results revealed that the composites were composed of two phases of MWCNTs and hexagonal wurzite ZnO. The SEM results showed that the ZnO nanoparticles were well decorated on the surface of MWCNTs. The amount of ZnO nanoparticles and their size increased with increasing irradiation power. Thick-film sensors were fabricated onto interdigitated conducting electrodes using as-synthesised hybrid composites as sensing materials. The alcohol-sensing behaviour of the hybrid composite films was investigated. The results indicated that the irradiation power had significant influence on the sensing response of the sensors toward alcohol. The sensor fabricated from the composite synthesised at higher irradiation power exhibited an enhanced alcohol-sensing performance.

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“…The responses of the sensor were studied within the test chamber with an inlet and an outlet. The gas-sensor response (S) for a given gas is typically defined as follows: [19] …”

Section: Methodsmentioning

confidence: 99%

Microwave-assisted synthesis of ZnO/MWCNT hybrid nanocomposites and their alcohol-sensing properties

Potirak

Pecharapa

Techitdheera

2013

Journal of Experimental Nanoscience

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“…Already, quantum dot tracers have allowed ecologists to visualize and quantify organic nitrogen uptake from soils by plants and mycorrhizae (Whiteside et al, 2009). A whole host of nano-sensors are being developed that could revolutionize our understanding of our environment (e.g., Andreescu et al, 2009;Cho et al, 2008;Chopra et al, 2002;Consales et al, 2009;Granqvist et al, 2007;Huang and Chang, 2006;Liu and Lin, 2005;Nelli et al, 1996;Park et al, 2009;Toal et al, 2005), allowing us to detect environmental conditions, gas concentrations, and contaminant loads at a temporal and spatial resolution never before possible. As the tools for nanomaterial measurement and characterization are transferred into ecology, we are increasingly recognizing that many organisms produce nanoparticles, and that these natural nanoparticles may play important roles in biogeochemical cycling (e.g., Gorby et al, 2006;Manceau et al, 2008;Blango and Mulvey, 2009).…”

Section: Discussionmentioning

confidence: 99%

An Ecological Perspective on Nanomaterial Impacts in the Environment

et al. 2010

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1954Growing concerns over the potential for unintended, adverse consequences of engineered nanoparticles (ENPs) in the environment have generated new research initiatives focused on understanding the ecological eff ects of ENPs. Almost nothing is currently known about the fate and transport of ENPs in environmental waters, soils, and sediments or about the biological impacts of ENPs in natural environments, and the bulk of modern nanotoxicogical research is focused on highly controlled laboratory studies with single species in simple media. In this paper, we provide an ecological perspective on the current state of knowledge regarding the likely environmental impacts of nanomaterials and propose a strategy for making rapid progress in new research in ecological nanoscience.

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“…Research, including that from our own group, working under size and price restraints, has produced a portable E-Nose based on a carbon black-polymer composite sensor array (Kim et al, 2005;Matzger et al, 2000). Compared those of with carbon black, the electrical conduction properties of carbon nanotubes (CNTs) have drawn considerable interest (Grant and White, 1991;Park et al, 2009), and multiple-walled carbon nanotube * Corresponding author. Tel.…”

Section: Introductionmentioning

confidence: 99%