A stretchable, room-temperature operable, chemiresistive gas sensor using nanohybrids of reduced graphene oxide and zinc oxide nanorods

Moon, Dong-Bin; Bag, Atanu; Lee, Han‐Byeol; Meeseepong, Montri; Lee, Dong-Hyun; Lee, Nae‐Eung

doi:10.1016/j.snb.2021.130373

Cited by 42 publications

(26 citation statements)

References 66 publications

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“…In this context, Pt can also be used to reduce the operating temperature of these devices, showing excellent selectivity for H 2 at 100 • C [52]. More recently, important results obtained by Moon et al [53] demonstrated remarkable room temperature sensing properties of flexible sensors based on rGO-ZnO nanocomposites. It is important to note that other semiconducting metal oxides such as SnO 2 [54][55][56], Cu 2 O [57], and Co 3 O 4 [58] are also being extensively studied to form nanocomposites with rGO and exhibiting promising results.…”

Section: Introductionmentioning

confidence: 99%

Tunning the Gas Sensing Properties of rGO with In2O3 Nanoparticles

et al. 2022

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Here, we discuss the effect of In2O3 nanoparticles on the reduced graphene oxide (rGO) gas-sensing potentialities. In2O3 nanoparticles were prepared with the polymer precursors method, while the nanocomposites were prepared by mixing an In2O3 nanoparticle suspension with an rGO suspension in different proportions. The gas-sensing performance of our materials was tested by exposing our materials to known concentrations of a target toxic gas in a dry airflow. Our results demonstrate that In2O3 nanoparticles enhance the rGO sensitivity for strong oxidizing species such as O3 and NO2, while a negative effect on its sensitivity for NH3 sensing is observed. Furthermore, our measurements towards H2S suggest that the concentration of In2O3 nanoparticles can induce an uncommon transition from p-type to n-type semiconductor nature when rGO–In2O3 nanocomposites operate at temperatures close to 160 °C.

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Section: Introductionmentioning

confidence: 99%

Tunning the Gas Sensing Properties of rGO with In2O3 Nanoparticles

et al. 2022

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“…Another example of the use of rGO/PDMS-based wearable sensors for electrochemical sensing applications can be shown in work done by Moon et al [ 140 ]. Stretchable, room-temperature operable, chemiresistive gas sensors were formed by using nanohybrids comprising of rGO and vertically grown zinc oxide (ZnO) nanorods.…”

Section: Graphene/pdms-based Sensorsmentioning

confidence: 99%

Integration of Different Graphene Nanostructures with PDMS to Form Wearable Sensors

Zhang

Gao

et al. 2022

Nanomaterials

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This paper presents a substantial review of the fabrication and implementation of graphene-PDMS-based composites for wearable sensing applications. Graphene is a pivotal nanomaterial which is increasingly being used to develop multifunctional sensors due to their enhanced electrical, mechanical, and thermal characteristics. It has been able to generate devices with excellent performances in terms of sensitivity and longevity. Among the polymers, polydimethylsiloxane (PDMS) has been one of the most common ones that has been used in biomedical applications. Certain attributes, such as biocompatibility and the hydrophobic nature of PDMS, have led the researchers to conjugate it in graphene sensors as substrates or a polymer matrix. The use of these graphene/PDMS-based sensors for wearable sensing applications has been highlighted here. Different kinds of electrochemical and strain-sensing applications have been carried out to detect the physiological signals and parameters of the human body. These prototypes have been classified based on the physical nature of graphene used to formulate the sensors. Finally, the current challenges and future perspectives of these graphene/PDMS-based wearable sensors are explained in the final part of the paper.

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“…1D nanostructures have been employed as gas-sensing layers owing to their large surface area and porosity, which allows for a high sensitivity [36][37][38][39]. Moreover, 1D nanomaterials with controlled structures and morphologies have been developed as gassensing layers, such as nanorods (NRs) [40], nanowires (NWs) [41], nanofibers (NFs) [42], and nanotubes (NTs) [43].…”

Section: Gas Sensorsmentioning

confidence: 99%

Nanomaterials for IoT Sensing Platforms and Point-of-Care Applications in South Korea

Choi

Lee

Choi

et al. 2022

Sensors

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Herein, state-of-the-art research advances in South Korea regarding the development of chemical sensing materials and fully integrated Internet of Things (IoT) sensing platforms were comprehensively reviewed for verifying the applicability of such sensing systems in point-of-care testing (POCT). Various organic/inorganic nanomaterials were synthesized and characterized to understand their fundamental chemical sensing mechanisms upon exposure to target analytes. Moreover, the applicability of nanomaterials integrated with IoT-based signal transducers for the real-time and on-site analysis of chemical species was verified. In this review, we focused on the development of noble nanostructures and signal transduction techniques for use in IoT sensing platforms, and based on their applications, such systems were classified into gas sensors, ion sensors, and biosensors. A future perspective for the development of chemical sensors was discussed for application to next-generation POCT systems that facilitate rapid and multiplexed screening of various analytes.

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A stretchable, room-temperature operable, chemiresistive gas sensor using nanohybrids of reduced graphene oxide and zinc oxide nanorods

Cited by 42 publications

References 66 publications

Tunning the Gas Sensing Properties of rGO with In2O3 Nanoparticles

Tunning the Gas Sensing Properties of rGO with In2O3 Nanoparticles

Integration of Different Graphene Nanostructures with PDMS to Form Wearable Sensors

Nanomaterials for IoT Sensing Platforms and Point-of-Care Applications in South Korea

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