Effect of mechanochemical preparation of 2D g-C3N4 on electronic properties and efficiency of photocatalytic hydrogen evolution |
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| Affiliation: | 1. L.V. Pisarzhevsky Institute of Physical Chemistry of the National Academy of Sciences of Ukraine, 31 Prospekt Nauki, Kyiv 03028, Ukraine;2. Institute of Physics of the National Academy of Sciences of Ukraine, 46 Prospekt Nauki, Kyiv 03028, Ukraine;1. Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, Shanxi Normal University, Linfen, 041004, China;2. The School of Chemical and Material Science, Shanxi Normal University, No. 1, Gongyuan Street, Linfen, 041004, China;1. Department of Fashion and Design, Lee-Ming Institute of Technology, New Taipei City, 243, Taiwan;2. Hubei Engineering & Technology Research Center for Functional Materials from Biomass, School of Chemistry and Material Science, Hubei Engineering University, Xiaogan, Hubei 432000, China;1. Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, University of Naples Federico II Naples, 80125, Italy;2. Institute for Researches on Combustion-CNR, Naples, 80125, Italy;3. CSGI, Center for Colloid and Surface Science, Florence, 50019, Italy;4. Department of Applied Science and Technology, Politecnico di Torino, Torino, 10129, Italy;1. Nigde Omer Halisdemir University, Mechanical Engineering Department, 51245, Nigde, Turkey;2. Nigde Omer Halisdemir University, Prof. Dr. T. Nejat Veziroglu Clean Energy Research Center, 51245, Nigde, Turkey;3. Vestel Defense Industry, Universiteler Mah, Ihsan Dogramaci Bul, Titanyum Blok 17/B, Teknokent ODTU, 06800, Ankara, Turkey;4. Yildiz Technical University, Naval Architecture and Marine Engineering Department, T Blok 1. Kat, 34349, Istanbul, Turkey |
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| Abstract: | A comparative study of morphology, spectral and photocatalytic properties of graphene-like C3N4 samples prepared by liquid-phase exfoliation of the bulk (l-C3N4) and mechanochemically delaminated g-C3N4 (m-C3N4) was performed for the first time. It was established that the particles of the mechanochemically prepared m-C3N4 are predominantly monolayer whereas the particles of l-C3N4 possess few-layer morphology. It was shown that m-C3N4 exhibits higher photocatalytic activity in the photocatalytic hydrogen evolution from aqueous solution of lactic acid under AM1.5G irradiation due to monolayer morphology, higher reduction potential, as well as more efficient separation and transfer of the photogenerated charges. |
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| Keywords: | Mechanochemical solventless delamination Morphology Electronic properties Photocatalytic hydrogen evolution |
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