A comparative study on characterizations of biomass derived activated carbons prepared by both normal and inert atmospheric heating conditions |
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| Institution: | 1. Selvamm Arts and Science College, Namakkal, 637 003, Tamilnadu, India;2. Adiyamaan College of Engineering, Hosur, 635 209, Tamilnadu, India;3. Department of Physics, Periyar University, Salem, 636 011, Tamilnadu, India;1. Department of Chemistry, Government Arts College for Women, Krishnagiri, 635002, Tamil Nadu, India;2. Department of Chemistry, Kandaswami Kandars''s College, P.Velur, 638182, Tamil Nadu, India;3. PG & Research Department of Physics, Nehru Memorial College, Trichy, 621007, Tamil Nadu, India;1. Department of Chemistry, ABR Govt. Degree College, Repalle, 522 265, A.P., India;2. Department of Chemistry, PB Siddhartha College of Arts & Sciences, Vijayawada, 520010, A.P., India;3. Department of Chemistry, DS Govt. Degree College for Women, Ongole, 523 001, A.P., India;4. Department of Physics, KRK Govt. Degree College, Addanki, 523 201, A.P., India;5. Department of Mechanical Engineering, National Institute of Technology, Warangal, 506004, T.S, India;6. Department of Chemistry, Acharya Nagarjuna University, NagarjunaNagar, 522 510, A.P., India;1. Department of Science Laboratory Technology, Delta State University, Abraka, Delta State, Nigeria;2. Department of Physics, College of Education, Warri, Delta State, Nigeria;3. Federal University of Petroleum Resources, Effurun, Delta State, Nigeria;4. Department of Physics, Delta State University, Abraka, Delta State, Nigeria;5. Federal University of Lokoja, Nigeria;6. Department of Physics and Astronomy, University of Nigeria, Nsukka, 410001, Enugu State, Nigeria;7. National Centre for Physics, Quaid-i-Azam University Campus, Islamabad, 44000, Pakistan |
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| Abstract: | In the present study, cost effective activated carbon from wasteland biomass of Calotropis gigantea stem was prepared at 400 °C, 600 °C, 750 °C and 900 °C carbonization temperatures in normal atmosphere (NA) and at 600 °C, 750 °C in inert atmosphere (IA) of nitrogen by using Potassium Carbonate (K2CO3) as chemical activating agent in the impregnation ratios of 0.5, 1 and 2. Activated carbons prepared under NA and IA were characterized and compared. Field Emission Scanning Electron Microscopy (FESEM) study confirmed presence of micropores and mesopores. While Xray Diffraction (XRD) analysis confirmed presence of both disordered amorphous carbon humps and graphitic crystallite peaks. Presences of functional groups were more prominent in NAC; found from Fourier Transform Infra-Red Spectroscopy (FTIR) analysis. BET surface area at 750 °C at chemical impregnation ratio 1 under NA was recorded highest containing both micropores and mesopores. Disordered carbon structure was confirmed from RAMAN spectroscopic analysis and nanoporous structure of activated carbon was confirmed from HRTEM analysis. NA activated carbons processed from wasteland weed can be preferred for different adsorption related applications as they are reasonable with improved properties. |
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| Keywords: | Wasteland weed Normal atmosphere Disordered graphite Micropores Surface area |
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