Investigation of the stability of QCM humidity sensor using graphene oxide as sensing films

Yao, Yao; Chen, Xiangdong; Li, Xiaoyü; Chen, Xinpeng; Li, Ning

doi:10.1016/j.snb.2013.10.076

Cited by 71 publications

(29 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The stable signal saturation behavior was monitored at three different RHs (40%, 60%, and 75%) as shown in Figure S3 in the Supporting Information, which is consistent with previous reports related with the GO humidity sensors. [ 37,38 ] In addition, the delamination issue of the GO layers from the channel ( Figure S4, Supporting Information) should be addressed because the GO was exposed to the outside environment. suggesting that charge transport in the rGO multilayer fi lms was governed by a 3D variable range hopping (VRH) model supplemented with parallel quantum tunneling.…”

Section: Communicationmentioning

confidence: 99%

Stretchable and Multimodal All Graphene Electronic Skin

et al. 2016

View full text Add to dashboard Cite

show abstract

Section: Communicationmentioning

confidence: 99%

Stretchable and Multimodal All Graphene Electronic Skin

et al. 2016

View full text Add to dashboard Cite

show abstract

“…The success of these sensors largely depends upon their sensitivity to humidity. There have been reports of graphene and graphene-metal oxide based humidity sensors, which implies that these nanostructures do exhibit sensitivity to humidity (water vapor) even at room temperature 42,43,44,45 . Thus there is a need to explore the influence of humidity on the sensing response of such sensors to various gases and work needs to be done to quantify and control it.…”

Section: Scope Of Further Researchmentioning

confidence: 99%

Reduced graphene oxide-zinc oxide nano-composites for gas sensing applications

Gupta

2021

Advanced Materials Proceedings

View full text Add to dashboard Cite

Nowadays, gas sensors are fast becoming an imperative part of modern life with extensive applications in domestic safety, environmental monitoring, industrial process control, public security, medical applications and chemical warfare assessment amongst many others. The detection of minor gas leaks has been a challenging area of research, particularly in view of the hazards to human health and safety posed by toxic gases like NO2, NO, CO, NH3 etc and combustible gases like methane, hydrogen gas and some volatile organic compounds. Thus it is imperative to evolve and employ simple yet reliable gas sensing mechanisms with optimum response and selectivity towards even low concentration of analyte gas at room temperature. Most of the conventional gas sensors are based on metal-oxide semiconductors which are low-cost, exhibit good sensitivity and fast response/recovery. Zinc oxide is one such n-type semiconducting oxide, which has been widely studied for gas sensing response due to its ease of fabrication, high sensitivity and environment-friendly nature. However, the operating temperature of such sensors is usually high (>200°C) owing to the wide band-gap (3.37 eV) and high electrical resistance (kΩ-MΩ), which limits their practical utilization. In order to be used in hazard monitoring and home/workplace safety, the gas sensors need to be sensitive to gas exposure in mild operating conditions. As an alternative, more recently, graphene and its derivatives like pristine graphene (PG), reduced graphene oxide (rGO) etc. have been studied for sensing applications owing to their exceptional electronic and physical properties such as high carrier mobility at room temperature, good thermal stability, high mechanical strength, ballistic conductivity and large specific surface area. These sensors show high sensitivity at low operating temperatures (down to room temperature) towards low concentrations of analyte gas. However most of these rGO based sensors exhibit relatively longer response/recovery times than metal-oxide based gas sensors. Hence, nanocomposites formed by hybridizing graphene or its derivatives with metal-oxide nanoparticles are being explored as gas sensing materials. Combining reduced graphene oxide with zinc oxide to form hybrid nanostructures is particularly interesting because not only do they display the individual properties of the metal oxide NPs (faster response/recovery times) and of graphene (high electronic conductivity leading to efficient room temperature gas response), but may also have synergistic effects leading to better sensitivity as a gas sensing material. Here we present a review of the recent progress in rGO-ZnO nanocomposites based gas sensors.

show abstract

“…Other reported systems Responses from other systems MWCNT/GO (film) [107] 11% to 97% (measured range) 7980 pF/% RH Humidity MWCNT [114]; GO film [107]; TiO 2 [115] 0% to 98% (humidity range) and 0.63 pF/% RH to 6000 pF/% RH ND/MWCNTs (drop casting-QCM) [111] Q factor: 26560 (11% RH) and 23460 (11% RH) Humidity PEG [116]; MWCNT [117]; GO/ MWCNTs [117] Q factor: ∼12,000 rigorously managed to accomplish the desired therapeutic effects on patients. With this purpose, the authors developed an ND-GCE electrochemical sensor for PZA detection.…”

Section: Great Response Formentioning

confidence: 99%

Carbon Nanostructure-based Sensors: A Brief Review on Recent Advances

Bezzon

Montanheiro

Menezes

et al. 2019

Advances in Materials Science and Engineering

117

View full text Add to dashboard Cite

A brief review reporting the recent advances on the carbon nanostructured materials-based sensors covering recently published works is presented. Several works dealing with experimental and theoretical data are reviewed and discussed. The main results for carbon nanotubes, nanodiamonds, fullerene, graphene, and hybrid carbon-nanostructured devices that show sensing properties in different fields were considered for the discussions. The goal of this paper was to highlight sensor mechanisms, and the best results reached up to now are creating bases for further applications.

show abstract

Investigation of the stability of QCM humidity sensor using graphene oxide as sensing films

Cited by 71 publications

References 15 publications

Stretchable and Multimodal All Graphene Electronic Skin

Stretchable and Multimodal All Graphene Electronic Skin

Reduced graphene oxide-zinc oxide nano-composites for gas sensing applications

Carbon Nanostructure-based Sensors: A Brief Review on Recent Advances

Contact Info

Product

Resources

About