bandgap tuning 2 biomass waste 2 carbon dots 2 fabrication parameters green synthesis 2 sustainable raw materials 2 ANTIBACTERIAL ACTIVITY 1 ARC-DISCHARGE 1 Agricultural robots 1 Agricultural wastes 1 Biocompatibility 1 Biomass 1 Carbon 1 Chemical analysis 1 FACILE GREEN SYNTHESIS 1 Formation mechanism 1 GRAPHENE QUANTUM DOTS 1 HYDROTHERMAL CARBONIZATION 1 Hydrothermal methods 1 MICROWAVE-ASSISTED SYNTHESIS 1 MULTICOLOR FLUORESCENCE 1 Metal ions 1 Metals 1 Nanotechnology 1 ONE-POT SYNTHESIS 1 ONE-STEP SYNTHESIS 1 Photoluminescence performance 1 Physical and chemical properties 1 SENSITIVE DETECTION 1 Structure analysis 1