Graphene based chemiresistor sensors for the detection of toxic air pollutants: A theoretical overview |
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| Affiliation: | 1. Department of Mathematics, College of Engineering and Technology, Srinivas University, Mangalore, 574146, India;2. Department of Mathematics, Bapuji Institute of Engineering & Technology, Davanagere, 577004, India;3. Department of Computer Science & Engineering, Bapuji Institute of Engineering & Technology, Davanagere, 577004, India;4. Department of Chemistry, College of Engineering and Technology, Srinivas University, Mangalore, 574146, India;1. Department of Physics, Sri Paramakalyani College, Alwarkurichi, Affiliated to Manomaniam Sundaranar University, Tamil Nadu, India;2. Sri Paramakalyani College, Alwarkurichi, Affiliated to Manomaniam Sundaranar University, Tamil Nadu, India;1. Department of Chemical Engineering, Indian Institute of Technology Guwahati, India;2. Department of Chemical Engineering, Institute of Chemical Technology Marathwada Campus, Jalna, India;1. PG and Research Department of Chemistry, Sri Sarada College for Women (Autonomous), Salem, 636016, Tamil Nadu, India;2. Department of Chemistry, Chikkaiah Naicker College, Erode, 638 004, Tamil Nadu, India;1. Department of Physics, Arasu Engineering College, Kumbakonam, Tamil Nadu, 612 501, India;2. Department of Physics, Meenakshi Chandrasekaran College of Arts and Science, (Affiliated to Bharathidasan University, Tiruchirapalli), Karambayam, Pattukkottai, Thanjavur, Tamil Nadu, 614 626, India;3. Department of Mechanical Engineering, Annai College of Engineering and Technology, Kovilacheri, Kumbakonam, Thanjavur, Tamil Nadu, 612 503, India;4. Department of Physics, Nethaji Subash Chandra Bose Arts and Science College, Mahatma Gandhi Nagar, Senthamangalam, Thiruvarur, Tamil Nadu, 610001, India |
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| Abstract: | The advancements in present world like industrial revolution, transport system, agriculture, food industry, pharmaceutical industry and electricity generation have made our life easy and comfortable in many aspects but they also have deleterious effects on our life. The pollution from industries, household waste, combustion of fossils etc. has introduced many harmful chemicals in air and water which have badly affected the life on our planet. The presence of undesirable gases in air has serious adverse effects on health and quality of life. Therefore, monitoring of these substances becomes important.Graphene based chemiresistor sensor are proved to be promising materials for the detection of toxic air pollutants. This article summarizes the recent progress of Density functional theory (DFT) based studies in the field of graphene based gas sensors. This article discusses the working mechanism of graphene based chemiresistor and also provides the information that how the sensing ability can be enhanced. The information given in the article will help the young researchers in the selection of suitable dopant and nano-clusters for graphene based surfaces to make them more selective and sensitive towards the analytes. |
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| Keywords: | Graphene 2D materials Metal doping Nano clusters Toxic gases Volatile organic compounds |
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