CO₂ detection: using the polyethyleneimine–cerium oxide nanocomposite sensing film coated on interdigitated electrode prepared from copper clad

ABSTRACT

In this effective work, Polyethyleneimine (PEI) and Cerium Oxide (CeO₂) with disparate weight percentage were designated for sensing Carbon dioxide (CO₂). Four heterogeneous varieties of sensors with a varied weight percentage of CeO₂ in PEI were fabricated by drop-casting the sensitive films on prepared Interdigitated electrodes (IDE) from copper-clad. Morphological, compositional, absorbance and X-ray studies were led on the cerium oxide nanoparticles by field-emission scanning electron microscopy (FESEM), energy dispersive X-ray analysis (EDAX), UV-Visible spectrometer and X-ray diffractometer (XRD). Response capabilities of all the four sensors at room temperature were attentively scrutinized. Unique capabilities of Repeatability, sensitivity, error-free measurements of the response time and recovery time were carefully inspected. It was summarized that the appropriate weight ratio of CeO₂ and PEI was critical for sensing response. A feasible comparison between sensing responses of the fabricated sensors to CO₂ under nitrogen (N₂) was typically done. Relevant sensing process was investigated too.

KEYWORDS:

• IDE
• copper clad
• cerium oxide
• PEI
• nanocomposite films
• gas sensors
• CO₂
• room temperature

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Notes on contributors

Naveen Kumar J R

Naveen Kumar J. R.  has completed B. E. in Electronics and Communication Engineering and M. Tech. In Nanotechnology. Presently working as Assistant Professor at Department of Nano Technology, Srinivas Institute of Technology, Srinivas Group of Institutions, Mangaluru, Karnataka, India. His research interests include Nanomaterials synthesis, Gas sensors, Thin-films & EMI Shielding.

Prasad P

Dr. Prasad P.  is currently working as a Professor and Head in the Department of Nano Technology, Srinivas Institute of Technology, Srinivas Group of Institutions, Mangaluru, Karnataka, India. His research interests include Nanomaterials, Biocompatible polymers/blends and Nanocomposites. 

Savitha M B

Dr. M. B. Savitha is currently working as Professor and Head in the department of Chemistry, Sahyadri College of Engineering and Management, Mangaluru, Karnataka, India. Her research interests include biopolymers, Synthesis and Structure reactivity studies.

Lokesh K S

Lokesh K. S. has completed B.E. in Mechanical Engineering and M.Tech. In Product design and manufacturing. Presently working as Assistant Professor at Department of Nano Technology, SIT, Srinivas Group of Institutions, Mangaluru, Karnataka, India. His research interests include Nanocomposites, bio fillers, sandwich structures & smart materials.

Bharath Kumar S

Bharath Kumar Shanmugam has completed B.E. in Mechanical Engineering and M.Tech in Computer Integrated Manufacturing. Presently, working as Research Scholar in Department of Mining Engineering, National Institute of Technology Karnataka, Surathkal 575025, India. His research interests are Conceptual Design, Mineral Processing, Tool Wear Monitoring, Composites.

Navaneeth Gowda N

Navaneeth Gowda N is presently pursuing a bachelor of engineering in the Department of Nano Technology, Srinivas Institute of Technology, Mangaluru, Karnataka, India. His research interests include nanocomposites and synthesis of nanoparticles.

Rohith H V

Rohith H. V. is presently pursuing a bachelor of engineering in the Department of Nano Technology, Srinivas Institute of Technology, Mangaluru, Karnataka, India. His research interests include nanocomposites and synthesis of nanoparticles.