Recent progress on the photocatalysis of carbon dots: Classification, mechanism and applications

Han, Mei; Zhu, Shoujun; Lu, Siyu; Song, Yubin; Feng, Tanglue; Tao, Songyuan; Liu, Junjun; Yang, Bai

doi:10.1016/j.nantod.2018.02.008

Cited by 584 publications

(269 citation statements)

References 121 publications

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“…The "topdown"p hysical or chemical cutting strategy uses large-size carbon-based materials as precursors, such as graphene oxide sheets, carbon nanotubes, carbon fibers, or graphite. [16][17][18] In recent decades, under the dual reality of mankind's increasing environmental awareness and the graduald eclineo ff ossil fuel reserves, the development and reasonable utilization of biomass waste (straw, [19] wood, [20] bark, [21] bagasse, [22] rice husk, [23] etc.) have attracted ag rowing amount of attention across the globe.…”

Section: Introductionmentioning

confidence: 99%

Sustainable Synthesis of Bright Green Fluorescent Nitrogen‐Doped Carbon Quantum Dots from Alkali Lignin

et al. 2019

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Sustainable, inexpensive, and environmentally friendly biomass waste can be exploited for large‐scale production of carbon nanomaterials. Here, alkali lignin was employed as a precursor to synthesize carbon quantum dots (CQDs) with bright green fluorescence through a simple one‐pot route. The prepared CQDs had a size of 1.5–3.5 nm, were water‐dispersible, and showed wonderful biocompatibility, in addition to their excellent photoluminescence and electrocatalysis properties. These high‐quality CQDs could be used in a wide range of applications such as metal‐ion detection, cell imaging, and electrocatalysis. The wide range of biomass lignin feedstocks provide a green, low‐cost, and viable strategy for producing high‐quality fluorescent CQDs and enable the conversion of biomass waste into high‐value products that promote sustainable development of the economy and human society.

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Section: Introductionmentioning

confidence: 99%

Sustainable Synthesis of Bright Green Fluorescent Nitrogen‐Doped Carbon Quantum Dots from Alkali Lignin

et al. 2019

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“…Carbon dots (CDs) is a relatively new carbon nanomaterial that has been extensively studied the last decade, due to its unique characteristics and properties. Strong photoluminescence, easy and low-cost preparative methods, stability, biocompatibility, and low toxicity are the main characteristics and properties of CDs that have attracted a huge interest for their use in various potential applications, especially in bio sensing and imaging, as well as in light emitting devices, fluorescence probes, environmental engineering, and photocatalysis [1][2][3][4][5][6][7]. Among a plethora of different procedures that have been presented up to now, microwave or thermal pyrolysis, electrochemical oxidation, hydrothermal treatments, and laser ablation are the most common approaches to create CDs.…”

Section: Introductionmentioning

confidence: 99%

Fluorescent Carbon Dots Ink for Gravure Printing

Koutsioukis

Belessi

Georgakilas

2019

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In the present article, we describe the use of highly fluorescent carbon dots (CDs) for the preparation of an effective water-based carbon dot ink (CD-ink) for gravure printing. Carbon dots were prepared hydrothermally from citrate and triethylenetetramine, and mixed properly with certain resins that are used in gravure inks. The as-produced CD gravure ink was used successfully for printing high quality fluorescent images.

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“…In addition, integrating zero‐dimensional carbon dots (CDs) into g‐C 3 N 4 presents a new way to facilitate transport and suppress the recombination of photocarriers. CDs exhibit unique photoinduced charge transfer and reservoir properties as well as a specially coupled heterogeneous interface . For example, Wang et al prepared a CD/g‐C 3 N 4 heterostructure that provides high photocarrier transfer kinetics to drive charge spatial separation by optimizing the electronic structure, leading to a reduced photocarrier transfer barrier .…”

Section: Methodsmentioning

confidence: 99%

Carbon Dots–Implanted Graphitic Carbon Nitride Nanosheets for Photocatalysis: Simultaneously Manipulating Carrier Transport in Inter‐ and Intralayers

Han

et al. 2020

Solar RRL

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Carbon dots (CDs) present unique photoinduced charge transfer and reservoir properties, showing promising application potential in photocatalysis. The in situ preparation of CDs in a graphitic carbon nitride (g‐C3N4) matrix provides not only a new approach for electronic structure modulation and heterostructure construction but also an effective way to improve their photocatalytic performance. However, incorporating CDs into ultrathin g‐C3N4 remains a challenge. Moreover, simultaneously tuning their carrier transport in inter‐ and intralayers is difficult but significant for their application as efficient photocatalysts. Herein, an unprecedented Se‐chaperoned thermal polymerization method for the synthesis of zero‐dimensional CD‐implanted g‐C3N4 nanosheets (CCNS) is reported. The CCNS simultaneously facilitate carrier transport and suppress recombination because of the seamless bonding heterostructure of CDs within the in‐plane domains of the g‐C3N4 nanosheets. Accordingly, the photocatalytic rates of water splitting for H2 evolution and CO2 reduction are enhanced 3.1 and 4.1 times, respectively. In addition, the photocatalytic RhB degradation efficiency dramatically increases 18 times. This work presents a promising solution to solving the current worldwide energy shortage and environmental pollution issues.

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Recent progress on the photocatalysis of carbon dots: Classification, mechanism and applications

Cited by 584 publications

References 121 publications

Sustainable Synthesis of Bright Green Fluorescent Nitrogen‐Doped Carbon Quantum Dots from Alkali Lignin

Sustainable Synthesis of Bright Green Fluorescent Nitrogen‐Doped Carbon Quantum Dots from Alkali Lignin

Fluorescent Carbon Dots Ink for Gravure Printing

Carbon Dots–Implanted Graphitic Carbon Nitride Nanosheets for Photocatalysis: Simultaneously Manipulating Carrier Transport in Inter‐ and Intralayers

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