A Mini Review on Carbon Quantum Dots: Preparation, Properties, and Electrocatalytic Application

Luminescent carbon quantum dots (CQDs) represent a new form of nanocarbon materials which have gained widespread attention in recent years, especially in chemical sensor, bioimaging, nanomedicine, solar cells, light-emitting diode (LED), and electrocatalysis. CQDs can be prepared simply and inexpensively by multiple techniques, such as the arc-discharge method, microwave pyrolysis, hydrothermal method, and electrochemical synthesis. CQDs show excellent physical and chemical properties like high crystallization, good dispersibility, photoluminescence properties. In particular, the small size, superconductivity, and rapid electron transfer of CQDs endow the CQDs-based composite with improved electric conductivity and catalytic activity. Besides, CQDs have abundant functional groups on the surface which could facilitate the preparation of multi-component electrical active catalysts. The interactions inside these multi-component catalysts may further enhance the catalytic performance by promoting charge transfer which plays an important role in electrochemistry. Most recent researches on CQDs have focused on their fluorescence characteristics and photocatalytic properties. This review will summarize the primary advances of CQDs in the synthetic methods, excellent physical and electronic properties, and application in electrocatalysis, including oxygen reduction reaction (ORR), oxygen evolution reaction (OER), hydrogen evolution reduction (HER), and CO2 reduction reaction (CO2RR).

[1]  Xuguang Liu,et al.  Ultrahigh Brightness Carbon Dot–Based Blue Electroluminescent LEDs by Host–Guest Energy Transfer Emission Mechanism , 2018 .

[2]  Fan Yang,et al.  Microwave synthesis of fluorescent carbon nanoparticles with electrochemiluminescence properties. , 2009, Chemical communications.

[3]  M. Jiang,et al.  Large-scale fabrication of heavy doped carbon quantum dots with tunable-photoluminescence and sensitive fluorescence detection , 2014 .

[4]  L. Dai,et al.  Nitrogen-doped colloidal graphene quantum dots and their size-dependent electrocatalytic activity for the oxygen reduction reaction. , 2012, Journal of the American Chemical Society.

[5]  Latha A. Gearheart,et al.  Electrophoretic analysis and purification of fluorescent single-walled carbon nanotube fragments. , 2004, Journal of the American Chemical Society.

[6]  Jing Yang,et al.  One-step synthesis of fluorescent carbon nanoparticles by laser irradiation , 2009 .

[7]  Neha Arora,et al.  Arc discharge synthesis of carbon nanotubes: Comprehensive review , 2014 .

[8]  L. Qu,et al.  Sulfur-doped graphitic carbon nitride decorated with graphene quantum dots for an efficient metal-free electrocatalyst , 2015 .

[9]  Zhenhui Kang,et al.  Carbon nanodots: synthesis, properties and applications , 2012 .

[10]  Bai Yang,et al.  One-Step Hydrothermal Synthesis of Nitrogen-Doped Conjugated Carbonized Polymer Dots with 31% Efficient Red Emission for In Vivo Imaging. , 2018, Small.

[11]  B. Jena,et al.  MoS2 Quantum Dots as Efficient Catalyst Materials for the Oxygen Evolution Reaction , 2018 .

[12]  Chun‐Sing Lee,et al.  Two-photon-excited near-infrared emissive carbon dots as multifunctional agents for fluorescence imaging and photothermal therapy , 2017, Nano Research.

[13]  R. Zhao,et al.  Graphene Oxide Quantum Dots Exfoliated From Carbon Fibers by Microwave Irradiation: Two Photoluminescence Centers and Self-Assembly Behavior. , 2018, Small.

[14]  Yichun Liu,et al.  Significant improvement of near-UV electroluminescence from ZnO quantum dot LEDs via coupling with carbon nanodot surface plasmons. , 2017, Nanoscale.

[15]  Xinglong Wu,et al.  Is There Real Upconversion Photoluminescence from Graphene Quantum Dots? , 2013 .

[16]  Xiaolei Feng,et al.  Carbon‐Quantum‐Dots‐Loaded Ruthenium Nanoparticles as an Efficient Electrocatalyst for Hydrogen Production in Alkaline Media , 2018, Advanced materials.

[17]  Zhenghong Lu,et al.  Future Perspectives and Review on Organic Carbon Dots in Electronic Applications. , 2019, ACS nano.

[18]  Minghong Wu,et al.  Scalable synthesis of organic-soluble carbon quantum dots: superior optical properties in solvents, solids, and LEDs. , 2017, Nanoscale.

[19]  Hui Huang,et al.  Carbon quantum dot/NiFe layered double-hydroxide composite as a highly efficient electrocatalyst for water oxidation. , 2014, ACS applied materials & interfaces.

[20]  Liming Dai,et al.  Heteroatom-Doped Graphitic Carbon Catalysts for Efficient Electrocatalysis of Oxygen Reduction Reaction , 2015 .

[21]  Xiangcheng Sun,et al.  Fluorescent carbon dots and their sensing applications , 2017 .

[22]  L. Franco,et al.  Synthesis and photochemical applications of processable polymers enclosing photoluminescent carbon quantum dots. , 2015, ACS nano.

[23]  Linjie Zhang,et al.  Nanohybrid of Carbon Quantum Dots/Molybdenum Phosphide Nanoparticle for Efficient Electrochemical Hydrogen Evolution in Alkaline Medium. , 2018, ACS applied materials & interfaces.

[24]  Anil H. Gore,et al.  Nitrogen-Doped Carbon Dots via Hydrothermal Synthesis: Naked Eye Fluorescent Sensor for Dopamine and Used for Multicolor Cell Imaging. , 2019, ACS applied bio materials.

[25]  Pengfei Shen,et al.  Synthesis-modification integration: one-step fabrication of boronic acid functionalized carbon dots for fluorescent blood sugar sensing. , 2014, Analytical chemistry.

[26]  Hui Huang,et al.  Mesoporous nitrogen, sulfur co-doped carbon dots/CoS hybrid as an efficient electrocatalyst for hydrogen evolution , 2017 .

[27]  P. Dutta,et al.  Lignin derived reduced fluorescence carbon dots with theranostic approaches: Nano-drug-carrier and bioimaging , 2017 .

[28]  Jun‐Jie Zhu,et al.  Incorporating Nitrogen-Doped Graphene Quantum Dots and Ni3 S2 Nanosheets: A Synergistic Electrocatalyst with Highly Enhanced Activity for Overall Water Splitting. , 2017, Small.

[29]  P. Ajayan,et al.  How Nitrogen-Doped Graphene Quantum Dots Catalyze Electroreduction of CO2 to Hydrocarbons and Oxygenates , 2017 .

[30]  Peng Chen,et al.  Revealing the tunable photoluminescence properties of graphene quantum dots , 2014 .

[31]  Changhua An,et al.  Rational Design of Co(II) Dominant and Oxygen Vacancy Defective CuCo2O4@CQDs Hollow Spheres for Enhanced Overall Water Splitting and Supercapacitor Performance. , 2018, Inorganic chemistry.

[32]  Zhengxiao Guo,et al.  Functionalized Carbon Dots on Graphene as Outstanding Non-Metal Bifunctional Oxygen Electrocatalyst. , 2019, Small.

[33]  Chunzhong Li,et al.  Facile preparation and upconversion luminescence of graphene quantum dots. , 2011, Chemical communications.

[34]  Y. Liu,et al.  Graphene quantum dot hybrids as efficient metal-free electrocatalyst for the oxygen reduction reaction. , 2013, ACS applied materials & interfaces.

[35]  Gang Wang,et al.  Facile and Highly Effective Synthesis of Controllable Lattice Sulfur-Doped Graphene Quantum Dots via Hydrothermal Treatment of Durian. , 2018, ACS applied materials & interfaces.

[36]  Peng Chen,et al.  Graphene quantum dot engineered nickel-cobalt phosphide as highly efficient bifunctional catalyst for overall water splitting , 2018, Nano Energy.

[37]  Peng Zhang,et al.  Efficient Oxygen Electrocatalyst for Zn-Air Batteries: Carbon Dots and Co9S8 Nanoparticles in a N,S-Codoped Carbon Matrix. , 2019, ACS applied materials & interfaces.

[38]  D. Shen,et al.  Near‐Infrared Excitation/Emission and Multiphoton‐Induced Fluorescence of Carbon Dots , 2018, Advanced materials.

[39]  L. Fan,et al.  Shining carbon dots: Synthesis and biomedical and optoelectronic applications , 2016 .

[40]  Bai Yang,et al.  Graphitic Nitrogen and High‐Crystalline Triggered Strong Photoluminescence and Room‐Temperature Ferromagnetism in Carbonized Polymer Dots , 2018, Advanced science.

[41]  Bai Yang,et al.  Near‐Infrared Photoluminescent Polymer–Carbon Nanodots with Two‐Photon Fluorescence , 2017, Advanced materials.

[42]  Xiaolong Hu,et al.  Recent Advances in Synthesis, Optical Properties, and Biomedical Applications of Carbon Dots. , 2019, ACS applied bio materials.

[43]  Hengchong Shi,et al.  Thickness-Dependent Full-Color Emission Tunability in a Flexible Carbon Dot Ionogel. , 2014, The journal of physical chemistry letters.

[44]  M. Otyepka,et al.  Graphitic Nitrogen Triggers Red Fluorescence in Carbon Dots. , 2017, ACS nano.

[45]  J. Tuček,et al.  Broad family of carbon nanoallotropes: classification, chemistry, and applications of fullerenes, carbon dots, nanotubes, graphene, nanodiamonds, and combined superstructures. , 2015, Chemical reviews.

[46]  Yuhui Wang,et al.  Facile, Quick, and Gram-Scale Synthesis of Ultralong-Lifetime Room-Temperature-Phosphorescent Carbon Dots by Microwave Irradiation. , 2018, Angewandte Chemie.

[47]  Chengzhou Zhu,et al.  Bifunctional fluorescent carbon nanodots: green synthesis via soy milk and application as metal-free electrocatalysts for oxygen reduction. , 2012, Chemical Communications.

[48]  P. He,et al.  Carbon quantum dots: an emerging material for optoelectronic applications , 2019, Journal of Materials Chemistry C.

[49]  Hui Peng,et al.  Simple Aqueous Solution Route to Luminescent Carbogenic Dots from Carbohydrates , 2009 .

[50]  X. Yang,et al.  Highly Fluorescent Chiral N-S-Doped Carbon Dots from Cysteine: Affecting Cellular Energy Metabolism. , 2018, Angewandte Chemie.

[51]  Huibo Wang,et al.  Carbon quantum dot-covered porous Ag with enhanced activity for selective electroreduction of CO2 to CO , 2019, Inorganic Chemistry Frontiers.

[52]  S. Manzhos,et al.  Achieving High Efficiency in Solution-Processed Perovskite Solar Cells Using C60/C70 Mixed Fullerenes. , 2018, ACS applied materials & interfaces.

[53]  Louzhen Fan,et al.  Exceptionally High Payload of the IR780 Iodide on Folic Acid-Functionalized Graphene Quantum Dots for Targeted Photothermal Therapy. , 2017, ACS applied materials & interfaces.

[54]  William W. Yu,et al.  Color-switchable electroluminescence of carbon dot light-emitting diodes. , 2013, ACS nano.

[55]  Bai Yang,et al.  Highly photoluminescent carbon dots for multicolor patterning, sensors, and bioimaging. , 2013, Angewandte Chemie.

[56]  L. Dai,et al.  Graphene Quantum Dots Supported by Graphene Nanoribbons with Ultrahigh Electrocatalytic Performance for Oxygen Reduction. , 2015, Journal of the American Chemical Society.

[57]  Y. Raitses,et al.  Detection of nanoparticles in carbon arc discharge with laser-induced incandescence , 2017 .

[58]  Xuguang Liu,et al.  Carbon Dots: From Intense Absorption in Visible Range to Excitation-Independent and Excitation-Dependent Photoluminescence , 2015 .

[59]  Hui Huang,et al.  Carbon quantum dots modified MoS2 with visible-light-induced high hydrogen evolution catalytic ability , 2016 .

[60]  Zhongpin Zhang,et al.  Strong Infrared Laser Ablation Produces White-Light-Emitting Materials via the Formation of Silicon and Carbon Dots in Silica Nanoparticles , 2015 .

[61]  J. Landfors,et al.  The electrochemical method , 1996 .

[62]  Youyu Zhang,et al.  One-pot electrochemical synthesis of functionalized fluorescent carbon dots and their selective sensing for mercury ion. , 2015, Analytica chimica acta.

[63]  James M Tour,et al.  Boron- and nitrogen-doped graphene quantum dots/graphene hybrid nanoplatelets as efficient electrocatalysts for oxygen reduction. , 2014, ACS nano.

[64]  A. Naumov,et al.  Photo‐and Electroluminescence from Nitrogen‐Doped and Nitrogen–Sulfur Codoped Graphene Quantum Dots , 2018, Advanced Functional Materials.

[65]  S. Hoeppener,et al.  Synthesis and Modification of Carbon Nanomaterials utilizing Microwave Heating , 2015, Advanced materials.

[66]  G. Vekinis,et al.  Review of Recent Studies on Solution Combustion Synthesis of Nanostructured Catalysts , 2018, Advanced Engineering Materials.

[67]  A. Wu,et al.  Red, green, and blue luminescence by carbon dots: full-color emission tuning and multicolor cellular imaging. , 2015, Angewandte Chemie.

[68]  Nicholas T. Dee,et al.  Carbon Nanotubes and Related Nanomaterials: Critical Advances and Challenges for Synthesis toward Mainstream Commercial Applications. , 2018, ACS nano.

[69]  S. Yao,et al.  Electrochemical synthesis of carbon nanodots directly from alcohols. , 2014, Chemistry.

[70]  G. Yang,et al.  External field-assisted laser ablation in liquid: An efficient strategy for nanocrystal synthesis and nanostructure assembly , 2017 .

[71]  Zhiqiang Gao,et al.  Carbon quantum dots and their applications. , 2015, Chemical Society reviews.

[72]  M. Fernández-Alonso,et al.  Fabrication by Laser Irradiation in a Continuous Flow Jet of Carbon Quantum Dots for Fluorescence Imaging , 2018, ACS omega.

[73]  S. Mallick,et al.  Electrochemical Method To Prepare Graphene Quantum Dots and Graphene Oxide Quantum Dots , 2017, ACS omega.

[74]  Hui Huang,et al.  Cobalt phosphide/carbon dots composite as an efficient electrocatalyst for oxygen evolution reaction. , 2018, Dalton transactions.

[75]  I. In,et al.  Simple Microwave-Assisted Synthesis of Amphiphilic Carbon Quantum Dots from A3/B2 Polyamidation Monomer Set. , 2017, ACS applied materials & interfaces.

[76]  Zhongpin Zhang,et al.  Microwave-assisted synthesis of cyclen functional carbon dots to construct a ratiometric fluorescent probe for tetracycline detection , 2018 .

[77]  C. A. Howard,et al.  Charged Carbon Nanomaterials: Redox Chemistries of Fullerenes, Carbon Nanotubes, and Graphenes. , 2018, Chemical reviews.

[78]  G. A. Shafeev,et al.  Silicon Nanoparticles Produced by Femtosecond Laser Ablation in Ethanol: Size Control, Structural Characterization, and Optical Properties , 2010 .

[79]  Hengwei Lin,et al.  Triple-Mode Emission of Carbon Dots: Applications for Advanced Anti-Counterfeiting. , 2016, Angewandte Chemie.

[80]  L. Ding,et al.  Multicolor fluorescent graphene quantum dots colorimetrically responsive to all-pH and a wide temperature range. , 2015, Nanoscale.

[81]  Hongguang Li,et al.  Production of yellow-emitting carbon quantum dots from fullerene carbon soot , 2017, Science China Materials.

[82]  Aicheng Chen,et al.  Green Synthesis and Electrochemical Study of Cobalt/Graphene Quantum Dots for Efficient Water Splitting , 2019, The Journal of Physical Chemistry C.

[83]  Xiangyou Li,et al.  Preparation of carbon quantum dots with tunable photoluminescence by rapid laser passivation in ordinary organic solvents. , 2011, Chemical communications.

[84]  Ya‐Ping Sun,et al.  Quantum-sized carbon dots for bright and colorful photoluminescence. , 2006, Journal of the American Chemical Society.

[85]  Bai Yang,et al.  The photoluminescence mechanism in carbon dots (graphene quantum dots, carbon nanodots, and polymer dots): current state and future perspective , 2015, Nano Research.

[86]  Chunzhong Li,et al.  One-pot hydrothermal synthesis of graphene quantum dots surface-passivated by polyethylene glycol and their photoelectric conversion under near-infrared light , 2012 .

[87]  Xiang Wang,et al.  Carbon Quantum Dots Modulated NiMoP Hollow Nanopetals as Efficient Electrocatalysts for Hydrogen Evolution , 2019, Industrial & Engineering Chemistry Research.

[88]  Youyong Li,et al.  Enhanced Activity for CO2 Electroreduction on a Highly Active and Stable Ternary Au-CDots-C3N4 Electrocatalyst , 2018 .

[89]  Hai-Jiao Wang,et al.  A rapid microwave synthesis of green-emissive carbon dots with solid-state fluorescence and pH-sensitive properties , 2018, Royal Society Open Science.