title: Sustainable microalgae for the simultaneous synthesis of carbon quantum dots for cellular imaging and porous carbon for CO2capture.
abstract: Microalgae biomass is a sustainable source with the potential to produce a range of products. However, there is currently a lack of practical and functional processes to enable the high-efficiency utilization of the microalgae. We report here a hydrothermal process to maximize the utilizability of microalgae biomass. Specifically, our concept involves the simultaneous conversion of microalgae to (i) hydrophilic and stable carbon quantum dots and (ii) porous carbon. The synthesis is easily scalable and eco-friendly. The microalgae-derived carbon quantum dots possess a strong two-photon fluorescence property, have a low cytotoxicity and an efficient cellular uptake, and show potential for high contrast bioimaging. The microalgae-based porous carbons show excellent CO2capture capacities of 6.9 and 4.2mmolg-1at 0 and 25°C respectively, primarily due to the high micropore volume (0.59cm3g-1) and large specific surface area (1396m2g-1).
authors.affiliation: State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China.
authors.forename: Li-Ping
authors.initials: LP
authors.lastname: Guo
authors.affiliation: Dalian Medical University Affiliated No.1 Hospital, Dalian 116021, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China. Electronic address: wencuili@dlut.edu.cn.
authors.forename: Wen-Cui
authors.initials: WC
authors.lastname: Li
mesh_terms: D018533:Biomass; D002244:Carbon / Q000378:metabolism*; D002245:Carbon Dioxide / Q000737:chemistry / Q000302:isolation & purification*; D058086:Microalgae / Q000378:metabolism*; D036641:Microscopy, Fluorescence, Multiphoton; D057054:Molecular Imaging; D016062:Porosity; D045663:Quantum Dots / Q000378:metabolism*
chemical_list: D002245:Carbon Dioxide; D002244:Carbon
keywords: CO(2) capture; Carbon quantum dots; Cellular imaging; Microalgae; Porous carbon