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      g-C3N4 quantum dots: direct synthesis, upconversion properties and photocatalytic application

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          Abstract

          g-C3N4 quantum dots were synthesized and can be used as general energy-transfer components in photocatalytic systems to harness the Vis-NIR spectrum of sunlight.

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          Graphene-Like Carbon Nitride Nanosheets for Improved Photocatalytic Activities

          Lili Zhang, Gang Liu, Hui-Ming Cheng … (2012)
          Article 0 comments Cited 806 times – based on 0 reviews     Review now
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            Chaotic Dirac billiard in graphene quantum dots

            A. K. Geim, K. S. Novoselov, E. Hill … (2007)
            We report on transport characteristics of quantum dot devices etched entirely in graphene. At large sizes, they behave as conventional single-electron transistors, exhibiting periodic Coulomb blockade peaks. For quantum dots smaller than 100 nm, the peaks become strongly non-periodic indicating a major contribution of quantum confinement. Random peak spacing and its statistics are well described by the theory of chaotic neutrino (Dirac) billiards. Short constrictions of only a few nm in width remain conductive and reveal a confinement gap of up to 0.5eV, which demonstrates the in-principle possibility of molecular-scale electronics based on graphene.
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              Upconversion and downconversion fluorescent graphene quantum dots: ultrasonic preparation and photocatalysis.

              Shujuan Zhuo, Mingwang Shao, Shuit-Tong Lee (2012)
              A facile ultrasonic route for the fabrication of graphene quantum dots (GQDs) with upconverted emission is presented. The as-prepared GQDs exhibit an excitation-independent downconversion and upconversion photoluminescent (PL) behavior, and the complex photocatalysts (rutile TiO(2)/GQD and anatase TiO(2)/GQD systems) were designed to harness the visible spectrum of sunlight. It is interesting that the photocatalytic rate of the rutile TiO(2)/GQD complex system is ca. 9 times larger than that of the anatase TiO(2)/GQD complex under visible light (λ > 420 nm) irradiation in the degradation of methylene blue.
              Article 0 comments Cited 258 times – based on 0 reviews     Review now
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                Author and article information

                Journal
                Journal ID (publisher-id): CHCOFS
                Title: Chem. Commun.
                Abbreviated Title: Chem. Commun.
                Publisher: Royal Society of Chemistry (RSC)
                ISSN (Print): 1359-7345
                ISSN (Electronic): 1364-548X
                Publication date Created: 2014
                Publication date (Print): 2014
                Volume: 50
                Issue: 70
                Pages: 10148-10150
                Article
                DOI: 10.1039/C4CC02543A
                SO-VID: e282ff8d-f4b0-40fa-8ac2-696329ae6864
                Copyright © © 2014
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