Comparative study on gas sensing by a Schottky diode electrode prepared with graphene–semiconductor–polymer nanocomposites

Biswas, Rokon Ud Dowla; Oh, Won‐Chun

doi:10.1039/c9ra00007k

Cited by 57 publications

(30 citation statements)

References 44 publications

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“…We know that it is extremely harmful to humans and the environment. 2 When the concentration of NH 3 exceeds 25 ppm, it will cause serious damage to human organs, such as the respiratory tract and eyes and also cause skin irritation. 3,4 Therefore, it is very important to design and develop ammonia sensing materials with good selectivity, high sensitivity, fast response and recovery performance.…”

Section: Introductionmentioning

confidence: 99%

A high-sensitive room temperature gas sensor based on cobalt phthalocyanines and reduced graphene oxide nanohybrids for the ppb-levels of ammonia detection

Guo

Wang

et al. 2019

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

A high-sensitive room temperature gas sensor based on cobalt phthalocyanines and reduced graphene oxide nanohybrids for the ppb-levels of ammonia detection

Guo

Wang

et al. 2019

RSC Adv.

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“…The insulating nature of GO can be linked to the concentration of sp 3 C–O bonds, resulting in a decrease of electron transfer and leading to the disruption of the percolating pathway of the sp 2 carbon cluster. 44 After thermal reduction, because of bigger sp 2 domains, the mesoporous material and graphene turn out to be electrically conducting and the IGS and ZAGS sensors demonstrate resistance between 50 and 150 kΩ. The sensing of E. coli is subjected to a balance of electrical conductivity of the mesoporous material and IGS and ZAGS sensors.…”

Section: Resultsmentioning

confidence: 99%

Comparative Study of Electrochemical Biosensors Based on Highly Efficient Mesoporous ZrO₂-Ag-G-SiO₂ and In₂O₃-G-SiO₂ for Rapid Recognition of E. coli O157:H7

et al. 2020

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Here, we reported an innovative and electrochemical biosensor for the rapid detection of Escherichia coli O157:H 7. We fabricated the mesoporous ZrO 2 -Ag-G-SiO 2 (ZAGS) and In 2 O 3 -G-SiO 2 (IGS) sensors, and cyclic voltammetry (CV) was employed to detect the bacteria. The development of these portable sensors addresses the challenges of conventional time-consuming and more expensive laboratory-based analyses. Hence, the biosensors were highly selective to detect E. coli . The sensor could recognize an individual E. coli cell in 1 μL of sample volume within 30 s. E. coli live cells tied down on sample nanoparticles worked toward the definite acquirement of E. coli . The high thickness of negative charge on the surface of E. coli cells effectively regulated the concentration of dominant part charge carriers in the mesoporous channel, allowing a continuous check of E. coli concentration in a known sample. The signal current decreased linearly, while the E. coli concentration increased from 1.0 × 10 1 to 1.0 × 10 10 CFU/mL. ZAGS and IGS biosensors could detect E. coli in the range from 10 1 to 10 10 CFU/mL. ZAGS and IGS biosensors in this investigation showed great specificity, reproducibility, stability, and selectivity and are expected to have a great impact on applications in the detection of foodborne pathogens.

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“…In order to engender selectivity of the graphene/Si Schottky diode sensor, functionalizing graphene is necessary. Biswas et al [ 60 ] used rGO sheets functionalized by polyaniline (PANI) as the metal electrode of the Shottky diode sensor to selectively detect NH 3 in ambient air. They obtained a detection limit of ppb level with the response and recovery times of 95 and 101 s, respectively.…”

Section: Working Principle Of Various Graphene-based Nh mentioning

confidence: 99%

A Review on Functionalized Graphene Sensors for Detection of Ammonia

Tang

Debliquy

Lahem

et al. 2021

Sensors

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Since the first graphene gas sensor has been reported, functionalized graphene gas sensors have already attracted a lot of research interest due to their potential for high sensitivity, great selectivity, and fast detection of various gases. In this paper, we summarize the recent development and progression of functionalized graphene sensors for ammonia (NH3) detection at room temperature. We review graphene gas sensors functionalized by different materials, including metallic nanoparticles, metal oxides, organic molecules, and conducting polymers. The various sensing mechanism of functionalized graphene gas sensors are explained and compared. Meanwhile, some existing challenges that may hinder the sensor mass production are discussed and several related solutions are proposed. Possible opportunities and perspective applications of the graphene NH3 sensors are also presented.

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Comparative study on gas sensing by a Schottky diode electrode prepared with graphene–semiconductor–polymer nanocomposites

Abstract: This paper studies the performance of a gas sensor based on an organic/inorganic diode for ammonia (NH3), nitrogen (N2) & oxygen (O2) sensing under atmospheric conditions at room temperature and different humidity levels.

Cited by 57 publications

References 44 publications

A high-sensitive room temperature gas sensor based on cobalt phthalocyanines and reduced graphene oxide nanohybrids for the ppb-levels of ammonia detection

A high-sensitive room temperature gas sensor based on cobalt phthalocyanines and reduced graphene oxide nanohybrids for the ppb-levels of ammonia detection

Comparative Study of Electrochemical Biosensors Based on Highly Efficient Mesoporous ZrO₂-Ag-G-SiO₂ and In₂O₃-G-SiO₂ for Rapid Recognition of E. coli O157:H7

A Review on Functionalized Graphene Sensors for Detection of Ammonia

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Comparative study on gas sensing by a Schottky diode electrode prepared with graphene–semiconductor–polymer nanocomposites

Abstract: This paper studies the performance of a gas sensor based on an organic/inorganic diode for ammonia (NH3), nitrogen (N2) & oxygen (O2) sensing under atmospheric conditions at room temperature and different humidity levels.

Cited by 57 publications

References 44 publications

A high-sensitive room temperature gas sensor based on cobalt phthalocyanines and reduced graphene oxide nanohybrids for the ppb-levels of ammonia detection

A high-sensitive room temperature gas sensor based on cobalt phthalocyanines and reduced graphene oxide nanohybrids for the ppb-levels of ammonia detection

Comparative Study of Electrochemical Biosensors Based on Highly Efficient Mesoporous ZrO2-Ag-G-SiO2 and In2O3-G-SiO2 for Rapid Recognition of E. coli O157:H7

A Review on Functionalized Graphene Sensors for Detection of Ammonia

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Comparative Study of Electrochemical Biosensors Based on Highly Efficient Mesoporous ZrO₂-Ag-G-SiO₂ and In₂O₃-G-SiO₂ for Rapid Recognition of E. coli O157:H7