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Dual‐Function HKUST‐1: Templating and Catalyzing Formation of Graphitic Carbon Nitride Quantum Dots Under Mild Conditions
Author(s) -
Albolkany Mohamed K.,
Wang Yang,
Li Weijin,
Arooj Syeda,
Chen ChunHui,
Wu Niannian,
Wang Yan,
Zbořil Radek,
Fischer Roland A.,
Liu Bo
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202009710
Subject(s) - graphitic carbon nitride , dual function , quantum dot , nitride , carbon nitride , dual (grammatical number) , nanotechnology , materials science , carbon fibers , function (biology) , chemical engineering , chemistry , composite material , photocatalysis , computer science , composite number , microbiology and biotechnology , layer (electronics) , biochemistry , biology , engineering , catalysis , art , computer graphics (images) , literature , contouring
Graphitic carbon nitride quantum dots (g‐CNQDs) are highly promising photoresponsive materials. However, synthesis of monodispersed g‐CNQDs remains challenging. Here we report the dual function of MOF [Cu 3 BTC 2 ] (HKUST‐1) as a catalyst and template simultaneously to prepare g‐CNQDs under mild conditions. Cyanamide (CA), a graphitic carbon nitride precursor, catalytically dimerized inside the larger MOF cavities at 90 °C and condensed into g‐CNQDs at 120 °C in a controlled fashion. The HKUST‐1 template was stable under the reaction conditions, leading to uniform g‐CNQDs with a particle size of 2.22±0.68 nm. The as prepared g‐CNQDs showed photoluminescence emission with a quantum yield of 3.1 %. This concept (MOF dual functionality) for catalyzing CA polycondensation (open metal sites (OMSs) effect) and controlling the produced particle size (pore‐templating effect), together with the tunable MOF porosity, is expected to produce unique g‐CNQDs with controllable size, morphology, and surface functionality.