CoFe2O4/rGO nanocomposite: Synthesis and enhanced ammonia gas sensing properties at room temperature

Marimuthu Ganesan; Bharathi Ganapathi; Palanisamy Govindasamy; Balaji Parasuraman; Paramasivam Shanmugam; Rajender Boddula; Ramyakrishna Pothu; Pazhanivel Thangavelu

Results in Chemistry (Jan 2024)

CoFe2O4/rGO nanocomposite: Synthesis and enhanced ammonia gas sensing properties at room temperature

Marimuthu Ganesan,
Bharathi Ganapathi,
Palanisamy Govindasamy,
Balaji Parasuraman,
Paramasivam Shanmugam,
Rajender Boddula,
Ramyakrishna Pothu,
Pazhanivel Thangavelu

Affiliations

Marimuthu Ganesan: Smart Materials Interface Laboratory, Department of Physics, Periyar University, Salem 11, Tamilnadu, India; Department of Physics, Mahendra College of Engineering, Salem 636 106, Tamil Nadu, India
Bharathi Ganapathi: Key Laboratory of Optoelectronic Devices and Systems of Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, Guangdong Province 518060, China
Palanisamy Govindasamy: Department of Applied Chemistry, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, 602105, Tamil Nadu, India; School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, 38541, Republic of Korea
Balaji Parasuraman: Smart Materials Interface Laboratory, Department of Physics, Periyar University, Salem 11, Tamilnadu, India
Paramasivam Shanmugam: Department of Chemistry, Faculty of Science and Technology, Thammasat University, Pathum Thani, 12120, Thailand
Rajender Boddula: Centre for Advanced Materials (CAM), Qatar University, Doha 2713, Qatar
Ramyakrishna Pothu: School of Physics and Electronics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
Pazhanivel Thangavelu: Smart Materials Interface Laboratory, Department of Physics, Periyar University, Salem 11, Tamilnadu, India; Corresponding author.

Journal volume & issue: Vol. 7
p. 101342

Abstract

Read online

In this study, CoFe2O4 and CoFe2O4/rGO samples were synthesized using co-precipitation and wet impregnation methods, respectively, and their sensing capabilities were assessed for ammonia gas detection at room temperature. The formation of the CoFe2O4/rGO nanocomposite was thoroughly examined through various analytical techniques, revealing its enhanced properties. Notably, the CoFe2O4/rGO nanocomposite exhibited significantly higher sensitivity compared to pure CoFe2O4, with a calculated sensitivity value of 1.098. The material also demonstrated rapid response and recovery times of 61 s and 143 s, respectively, for a 100-ppm ammonia gas concentration at room temperature. These findings highlight the potential of the CoFe2O4/rGO nanocomposite for efficient and sensitive gas sensing applications.

Published in Results in Chemistry

ISSN: 2211-7156 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Chemistry
Website: https://www.journals.elsevier.com/results-in-chemistry/

About the journal

Abstract

Keywords