Continuous Hydrothermal Flow Synthesis of Blue-Luminescent, Excitation-Independent Nitrogen-Doped Carbon Quantum Dots as Nanosensors
Journal article
Baragau, I-A., Power, N., Morgan, D., Heil, T., Lobo, R., Roberts, C., Titirici, M.M., Dunn, S. and Kellici, S. (2020). Continuous Hydrothermal Flow Synthesis of Blue-Luminescent, Excitation-Independent Nitrogen-Doped Carbon Quantum Dots as Nanosensors. Journal of Materials Chemistry A.
| Authors | Baragau, I-A., Power, N., Morgan, D., Heil, T., Lobo, R., Roberts, C., Titirici, M.M., Dunn, S. and Kellici, S. |
|---|---|
| Abstract | Blue-luminescent N-doped carbon quantum dots (NCQDs) exhibiting rarely observed excitation independent optical properties are synthesised from citric acid in the presence of ammonia via a Continuous Hydrothermal Flow Synthesis (CHFS) approach. CHFS is an eco-friendly, rapid synthetic approach (within fractions of a second) facilitating ease of scale-up industrialization as well as offering materials with superior properties. The synthesised CQDs readily disperse in aqueous solution, have an average particle size of 3.3 ± 0.7 nm, with highest emission intensity at 441 nm (and a narrow full width at half maximum, FWHM ~78 nm) under a 360 nm excitation wavelength. Carbon quantum dots, without any further modification, exhibited a high selectivity and sensitivity as a nano-sensor for the highly toxic and carcinogenic chromium(VI) ions. The nano-chemo-sensor delivers significant advantages including simplicity of manufacturing via a continuous, cleaner technology (using targeted biomass precursor), high selectivity, sensitivity and fast response leading to potential applications in environmental industry as well photovoltaics, bio-tagging, bio-sensing and beyond. |
| Keywords | carbon quantum dots; continuous hydrothermal flow synthesis; chromium (VI) sensing |
| Year | 2020 |
| Journal | Journal of Materials Chemistry A |
| Publisher | Royal Society of Chemistry |
| ISSN | 2050-7488 |
| Digital Object Identifier (DOI) | doi:https://www.doi.org/10.1039/C9TA11781D |
| Publication dates | |
| Online | 10 Jan 2020 |
| Publication process dates | |
| Accepted | 10 Jan 2020 |
| Deposited | 14 Jan 2020 |
| Accepted author manuscript | License CC BY 4.0 File Access Level Open |
Permalink -
https://openresearch.lsbu.ac.uk/item/88wqq
Accepted author manuscript
Under embargo until 10 Jan 2021
14
total views0
total downloads0
views this month0
downloads this month
Related outputs
Chemical functionalisation of 2D materials via batch and continuous hydrothermal flow synthesis
Alli, U., Hettiarachchi, S. and Kellici, S. (2020). Chemical functionalisation of 2D materials via batch and continuous hydrothermal flow synthesis. Chemistry–A European Journal.Vortex fluidic mediated synthesis of TiO2 nanoparticle/MXene composites
Al-antaki, A., Alharbi, T, Kellici, S., Power, N., Lawrance, W. and Raston, C. (2020). Vortex fluidic mediated synthesis of TiO2 nanoparticle/MXene composites. ChemNanoMat.Thermal Energy Harvesting Using Pyroelectric-Electrochemical Coupling in Ferroelectric Materials
Zhang, Y., Phuong, P.T.T., Roake, E., Khanbareh, H., Wang, Y., Dunn, S. and Bowen, C. (2020). Thermal Energy Harvesting Using Pyroelectric-Electrochemical Coupling in Ferroelectric Materials. Joule.Influence of anneal atmosphere on ZnO-nanorod photoluminescent and morphological properties with self-powered photodetector performance
Hatch, SM, Briscoe, J, Sapelkin, A, Gillin, WP, Gilchrist, JB, Ryan, MP, Heutz, S and Dunn, S (2013). Influence of anneal atmosphere on ZnO-nanorod photoluminescent and morphological properties with self-powered photodetector performance. Journal of Applied Physics. 113 (20), pp. 204501-204501.Enhanced performance with bismuth ferrite perovskite in ZnO nanorod solid state solar cells
Loh, L, Briscoe, J and Dunn, S (2014). Enhanced performance with bismuth ferrite perovskite in ZnO nanorod solid state solar cells. Nanoscale. 6 (12), pp. 7072-7078.ZnO nanorod surface modification with PDDA/PSS Bi-layer assembly for performance improvement of ZnO piezoelectric energy harvesting devices
Jalali, N, Briscoe, J, Tan, YZ, Woolliams, P, Stewart, M, Weaver, PM, Cain, MG and Dunn, S (2014). ZnO nanorod surface modification with PDDA/PSS Bi-layer assembly for performance improvement of ZnO piezoelectric energy harvesting devices. Journal of Sol-Gel Science and Technology. 73 (3), pp. 544-549.Acoustic enhancement of polymer/ZnO nanorod photovoltaic device performance
Shoaee, S, Briscoe, J, Durrant, JR and Dunn, S (2014). Acoustic enhancement of polymer/ZnO nanorod photovoltaic device performance. Advanced Materials. 26 (2), pp. 263-268.Incorporation of Ag nanowires in CuWO 4 for improved visible light-induced photoanode performance
Zhang, H, Yilmaz, P, Ansari, JO, Khan, FF, Binions, R, Krause, S and Dunn, S (2015). Incorporation of Ag nanowires in CuWO 4 for improved visible light-induced photoanode performance. Journal of Materials Chemistry A. 3 (18), pp. 9638-9644.Structural, Optical and Magnetic Properties of Cu-Doped ZnO Nanoparticles by Co-Precipitation Method
Fabbiyola, S, Kennedy, L J, JudithVijaya, J, Bououdina, M and Dunn, S (2016). Structural, Optical and Magnetic Properties of Cu-Doped ZnO Nanoparticles by Co-Precipitation Method. Journal of Nanoscience and Nanotechnology. 16 (9), pp. 9722-9730.Enhanced photocatalytic activity of heterostructured ferroelectric BaTiO3/α-Fe2O3 and the significance of interface morphology control
Cui, Y, Briscoe, J, Wang, Y, Tarakina, N V and Dunn, S (2017). Enhanced photocatalytic activity of heterostructured ferroelectric BaTiO3/α-Fe2O3 and the significance of interface morphology control. ACS applied materials & interfaces. 9 (29), pp. 24518-24526.Ultra high resolution of PZT 30/70 domains as imaged by PFM
Dunn, S, Shaw, CP, Huang, Z and Whatmore, RW (2002). Ultra high resolution of PZT 30/70 domains as imaged by PFM. Nanotechnology. 13 (4).Plasmon enhanced visible light photocatalysis for TiO 2 supported Pd nanoparticles
Lacerda, AM, Larrosa, I and Dunn, S (2015). Plasmon enhanced visible light photocatalysis for TiO 2 supported Pd nanoparticles. Nanoscale. 7 (29), pp. 12331-12335.Carbon-Nanodot Solar Cells from Renewable Precursors
Marinovic, A, Kiat, LS, Dunn, S, Titirici, MM and Briscoe, J (2017). Carbon-Nanodot Solar Cells from Renewable Precursors. ChemSusChem. 10 (5), pp. 1004-1013.Photoelectrocatalysis of Rhodamine B and solar hydrogen production by TiO2 and Pd/TiO2 catalyst systems
Yilmaz, P, Lacerda, A M, Larrosa, I and Dunn, S (2017). Photoelectrocatalysis of Rhodamine B and solar hydrogen production by TiO2 and Pd/TiO2 catalyst systems. Electrochimica Acta. 231, pp. 641-649.Pyroelectric energy harvesting for water splitting
Xie, M, Dunn, S, Le Boulbar, E and Bowen, C R (2017). Pyroelectric energy harvesting for water splitting. International Journal of Hydrogen Energy. 42 (37), pp. 23437-23445.
Effect of Ferroelectricity on Solar-Light-Driven Photocatalytic Activity of BaTiO3? Influence on the Carrier Separation and Stern Layer Formation
Cui, Y, Briscoe, J and Dunn, S (2013). Effect of Ferroelectricity on Solar-Light-Driven Photocatalytic Activity of BaTiO3? Influence on the Carrier Separation and Stern Layer Formation. Chemistry of Materials. 25 (21), pp. 4215-4223.Bismuth ferrite enhanced ZnO solid state dye-sensitised solar cell
Loh, L, Briscoe, J and Dunn, S (2016). Bismuth ferrite enhanced ZnO solid state dye-sensitised solar cell. Procedia Engineering. 139, pp. 15-21.Optimization of 3D ZnO brush-like nanorods for dye-sensitized solar cells
Pace, S, Resmini, A, Tredici, IG, Soffientini, A, Liao, X, Dunn, S, Briscoe, J and Anselmi-Tamburini, U (2018). Optimization of 3D ZnO brush-like nanorods for dye-sensitized solar cells. RSC Advances. 8, pp. 9775-9782.Tuning the electrocaloric enhancement near the morphotropic phase boundary in lead-free ceramics
Le Goupil, F, McKinnon, R, Koval, V, Viola, G, Dunn, S, Berenov, A, Yan, H and Alford, N (2016). Tuning the electrocaloric enhancement near the morphotropic phase boundary in lead-free ceramics. Scientific Reports. 6, p. 28251.Lithium-induced phase transitions in lead-free Bi0. 5Na0. 5TiO3 based ceramics
Viola, G, McKinnon, R, Koval, V, Adomkevicius, A, Dunn, S and Yan, H (2014). Lithium-induced phase transitions in lead-free Bi0. 5Na0. 5TiO3 based ceramics. The Journal of Physical Chemistry C. 118 (16), pp. 8564-8570.Routes to energy conversion with functional oxide films and nanostructures, a short review
Dunn, S (2015). Routes to energy conversion with functional oxide films and nanostructures, a short review. Thin Solid Films. 601, pp. 59-62.Effect of internal electric fields on charge carrier dynamics in a ferroelectric material for solar energy conversion
Morris, MR, Pendlebury, SR, Hong, J, Dunn, S and Durrant, JR (2016). Effect of internal electric fields on charge carrier dynamics in a ferroelectric material for solar energy conversion. Advanced Materials. 28 (33), pp. 7123-7128.Enhanced discharge energy density of rGO/PVDF nanocomposites: The role of the heterointerface
Zhang, Y, Wang, Y, Qi, S, Dunn, S, Dong, H and Button, T (2018). Enhanced discharge energy density of rGO/PVDF nanocomposites: The role of the heterointerface. Applied Physics Letters. 112 (20), pp. 202904-202904.