Study of the Sensitivity of Carbon Quantum Dots for NO2 Gas Sensor and improve it using Graphene

Nuha Salem  Sultan; Omar Abdulsada Ali

doi:10.30723/ijp.v22i4.1342

Article Details

Study of the Sensitivity of Carbon Quantum Dots for NO2 Gas Sensor and improve it using Graphene

Authors:

Nuha Salem Sultan | Omar Abdulsada Ali

Publisher:

University of Baghdad

Journal:

Iraqi Journal of Physics Vol.22 Issue 4, pp.130-138

Document Type:

Article

Publication Date:

1/2024

Document Language:

English

Document ID (Org No.):

2001369362

pISSN:

2664-5548

DOI:

10.30723/ijp.v22i4.1342

Keywords:

Abstract:

 Gas sensors are essential for detecting noxious gases that have a detrimental effect on people's health and welfare. Carbon quantum dots (CQDs) are the fundamental component of gas detectors. CQDs and graphene (Gr) were prepared using the electrochemical method. The gas sensitivity of these materials was evaluated at different temperatures (150, 200, 250 °C) to assess their effectiveness. Subsequently, experiments were conducted at different temperatures to ascertain that the combination of CQDs and Gr, with various percentages of Gr and CQDs, exhibited superior gas sensitization properties compared to CQDs alone. This was evaluated based on criteria such as sensitivity, recovery time, and reaction time.
Interestingly, the combination was highly responsive. The quantum dots on glass substrates could detect NO2 gas at the abovementioned temperatures. Experimental evidence showed that the gas sensor can only detect graphene at low temperatures.

Article Details

Study of the Sensitivity of Carbon Quantum Dots for NO2 Gas Sensor and improve it using Graphene

Authors:

Nuha Salem Sultan | Omar Abdulsada Ali

Publisher:

University of Baghdad

Journal:

Iraqi Journal of Physics Vol.22 Issue 4, pp.130-138

Document Type:

Article

Publication Date:

1/2024

Document Language:

English

Document ID (Org No.):

2001369362

pISSN:

2664-5548

DOI:

10.30723/ijp.v22i4.1342

Carbon Quantum Dot

Electrochemical Method

Electrochemical Process

Graphene

Gas Sensor

Issues

Article Details

Study of the Sensitivity of Carbon Quantum Dots for NO2 Gas Sensor and improve it using Graphene

Authors: Nuha Salem Sultan | Omar Abdulsada Ali

Publisher: University of Baghdad

Journal: Iraqi Journal of Physics Vol.22 Issue 4, pp.130-138

Document Type: Article

Publication Date: 1/2024

Document Language: English

Document ID (Org No.): 2001369362

pISSN: 2664-5548

DOI: 10.30723/ijp.v22i4.1342

Carbon Quantum Dot

Electrochemical Method

Electrochemical Process

Graphene

Gas Sensor

Issues

Authors:

Nuha Salem Sultan | Omar Abdulsada Ali

Publisher:

University of Baghdad

Journal:

Iraqi Journal of Physics Vol.22 Issue 4, pp.130-138

Document Type:

Article

Publication Date:

1/2024

Document Language:

English

Document ID (Org No.):

2001369362

pISSN:

2664-5548

DOI:

10.30723/ijp.v22i4.1342