Reduced graphene oxide for fiber-optic toluene gas sensing

In this study, we developed a remote gamma-ray spectroscopy system based on a fiber-optic radiation sensor (FORS) that is composed of an inorganic scintillator coated with reduced graphene oxide (RGO) and a plastic optical fiber (POF). As a preliminary experiment, we measured the transmitted light intensities using RGO membranes of different thicknesses with different wavelengths of emitted light. To evaluate the FORS performance, we determined the optimal thickness of the RGO membrane and measured the amounts of scintillating light and gamma energy spectra using radioactive isotopes such as 60Co and 137Cs. The amounts of scintillating light from the RGO-coated inorganic scintillators increased, and the energy resolutions of the gamma-ray spectra were enhanced. In addition, the gamma-ray energy spectra were measured using different types of RGO-coated inorganic scintillators depending on the lengths of the POFs for remote gamma-ray spectroscopy. It was expected that inorganic scintillators coated with RGO in FORS can deliver improved performance, such as increments of scintillating light and energy resolution in gamma-ray spectroscopy, and they can be used to identify nuclides remotely in various nuclear facilities.

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Study on gas sensing of reduced graphene oxide/ZnO thin film at room temperature

Sensors and Actuators B Chemical ◽

10.1016/j.snb.2016.09.064 ◽

2017 ◽

Vol 240 ◽

pp. 870-880 ◽

Cited By ~ 25

Author(s):

Yong Zhou ◽

Xiaogang Lin ◽

Yang Wang ◽

Guoqing Liu ◽

Xiangyi Zhu ◽

...

Keyword(s):

Thin Film ◽

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Room Temperature ◽

Gas Sensing ◽

Zno Thin Film ◽

Reduced Graphene

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Enhanced H2S gas sensing properties based on SnO2 quantum wire/reduced graphene oxide nanocomposites: Equilibrium and kinetics modeling

Sensors and Actuators B Chemical ◽

10.1016/j.snb.2017.04.023 ◽

2017 ◽

Vol 249 ◽

pp. 632-638 ◽

Cited By ~ 27

Author(s):

Zhilong Song ◽

Jingyao Liu ◽

Qian Liu ◽

Haoxiong Yu ◽

Wenkai Zhang ◽

...

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Quantum Wire ◽

Gas Sensing ◽

Sensing Properties ◽

Kinetics Modeling ◽

Reduced Graphene ◽

Gas Sensing Properties ◽

Equilibrium And Kinetics

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Reduced graphene oxide/SnO2@Au heterostructure for enhanced ammonia gas sensing

Chemical Physics Letters ◽

10.1016/j.cplett.2019.136829 ◽

2019 ◽

Vol 737 ◽

pp. 136829 ◽

Cited By ~ 4

Author(s):

Ruiqin Peng ◽

Yuanyuan Li ◽

Tong Liu ◽

Qing Sun ◽

Pengchao Si ◽

...

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Gas Sensing ◽

Ammonia Gas ◽

Reduced Graphene

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NO2 gas sensing performance enhancement based on reduced graphene oxide decorated V2O5 thin films

Nanotechnology ◽

10.1088/1361-6528/ab0321 ◽

2019 ◽

Vol 30 (22) ◽

pp. 224001 ◽

Cited By ~ 8

Author(s):

Vijendra Singh Bhati ◽

D Sheela ◽

Basanta Roul ◽

Ramesh Raliya ◽

Pratim Biswas ◽

...

Keyword(s):

Thin Films ◽

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Performance Enhancement ◽

Gas Sensing ◽

Reduced Graphene ◽

V2o5 Thin Films ◽

Sensing Performance

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Enhanced H2S gas-sensing performance of α-Fe2O3 nanofibers by optimizing process conditions and loading with reduced graphene oxide

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2020.154169 ◽

2020 ◽

Vol 826 ◽

pp. 154169 ◽

Cited By ~ 3

Author(s):

Nguyen Van Hoang ◽

Chu Manh Hung ◽

Nguyen Duc Hoa ◽

Nguyen Van Duy ◽

Nguyen Van Toan ◽

...

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Gas Sensing ◽

Process Conditions ◽

Reduced Graphene ◽

Sensing Performance

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Simple Synthesis of Cobalt Carbonate Hydroxide Hydrate and Reduced Graphene Oxide Hybrid Structure for High-Performance Room Temperature NH3 Sensor

Sensors ◽

10.3390/s19030615 ◽

2019 ◽

Vol 19 (3) ◽

pp. 615 ◽

Cited By ~ 4

Author(s):

Chang Wang ◽

Huan Wang ◽

Dan Zhao ◽

Xianqi Wei ◽

Xin Li ◽

...

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Gas Sensor ◽

Room Temperature ◽

Gas Sensing ◽

Hybrid Structure ◽

Cobalt Carbonate ◽

Carbonate Hydroxide ◽

Reduced Graphene ◽

Hydroxide Hydrate

A novel hybrid structure sensor based on cobalt carbonate hydroxide hydrate (CCHH) and reduced graphene oxide (RGO) was designed for room temperature NH3 detection. This hybrid structure consisted of CCHH and RGO (synthesized by a one-step hydrothermal method), in which RGO uniformly dispersed in CCHH, being used as the gas sensing film. The resistivity of the hybrid structure was highly sensitive to the changes on NH3 concentration. CCHH in the hybrid structure was the sensing material and RGO was the conductive channel material. The hybrid structure could improve signal-to-noise ratio (SNR) and the sensitivity by obtaining the optimal mass proportion of RGO, since the proportion of RGO was directly related to sensitivity. The gas sensor with 0.4 wt% RGO showed the highest gas sensing response reach to 9% to 1 ppm NH3. Compared to a conventional gas sensor, the proposed sensor not only showed high gas sensing response at room temperature but also was easy to achieve large-scale production due to the good stability and simple synthesis process.

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Ammonia Gas Detection by Tannic Acid Functionalized and Reduced Graphene Oxide at Room Temperature

Journal of Nanomaterials ◽

10.1155/2014/497384 ◽

2014 ◽

Vol 2014 ◽

pp. 1-6 ◽

Cited By ~ 40

Author(s):

Sweejiang Yoo ◽

Xin Li ◽

Yuan Wu ◽

Weihua Liu ◽

Xiaoli Wang ◽

...

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Gas Sensor ◽

Tannic Acid ◽

Room Temperature ◽

Gas Sensing ◽

High Sensitivity ◽

Gas Detection ◽

Ammonia Gas ◽

Reduced Graphene

Reduced graphene oxide (rGO) based chemiresistor gas sensor has received much attention in gas sensing for high sensitivity, room temperature operation, and reversible. Here, for the first time, we present a promising chemiresistor for ammonia gas detection based on tannic acid (TA) functionalized and reduced graphene oxide (rGOTA functionalized). Green reductant of TA plays a major role in both reducing process and enhancing the gas sensing properties ofrGOTA functionalized. Our results showrGOTA functionalizedonly selective to ammonia with excellent respond, recovery, respond time, and recovery times.rGOTA functionalizedelectrical resistance decreases upon exposure to NH3where we postulated that it is due to n-doping by TA and charge transfer betweenrGOTA functionalizedand NH3through hydrogen bonding. Furthermore,rGOTA functionalizedhinders the needs for stimulus for both recovery and respond. The combination of greener sensing material and simplicity in overall sensor design provides a new sight for green reductant approach of rGO based chemiresistor gas sensor.

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