Synthesis of reduced graphene oxide nanosheets from sugarcane dry leaves by two-stage pyrolysis for antibacterial activity  

作　　者：Baskar Thangaraj Pravin Raj Solomon Nutthapon Wongyao Mohamed I.Helal Ali Abdullah Sufian Abedrabbo Jamal Hassan 

机构地区：[1]Department of Physics,Khalifa University,Abu Dhabi,127788,United Arab Emirates [2]Molecular Epidemiological Diagnostic Research Facility,Department of Immunology,School of Biological Sciences,Madurai Kamaraj University,Madurai,625021,Tamil Nadu,India [3]Fuel Cells and Hydrogen Research and Engineering Center,Pilot Plant Development and Training Institute,King Mongkut's University of Technology Thonburi,Bangkok,10140,Thailand [4]CORE Lab Specialist,Electron Microscopy Core Labs,Khalifa University,Abu Dhabi,127788,United Arab Emirates

出　　处：《Nano Materials Science》2024年第5期625-634,共10页纳米材料科学（英文版）

摘　　要：Oxidative-exfoliation methods were in vogue in the production of rGO from graphite.Processing of such synthetic graphite needs high temperatures(2500℃).Thus,such process is not cost-effective.The present study is made on the dry leaves of sugarcane(Saccharum officinarum)as an alternative raw material so as to be economical and environmentally benign.The dry leaves are subjected to two-step pyrolysis without any catalyst or reducing agent in far divergent temperatures to produce as prepared and acid treated rGOs.They were evaluated by UV–Vis.,FTIR,XRD,Raman spectroscopy,TGA/DTG,BET,FESEM-EDS and TEM.The as prepared rGO has few layers with irregular and folded architecture whereas acid-treated rGO has thinly stacked crumpled sheets with many wrinkles on its surface.The prepared rGOs have multilayered graphitic structure due to the unique ratio between G and D bands.Acid treated rGO has poor thermal stability as compared to that of as-prepared rGO at high temperatures due to the variation in the oxygen-containing functional groups.Acid treated rGO has low antibacterial activity as compared to that of the as-prepared rGO due to the paucity of the functional groups.

关 键 词：Biomass wastes Sugarcane dry leaves PYROLYSIS Reduced graphene oxide Antibacterial activity 

分 类 号：TB383[一般工业技术—材料科学与工程]