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The enhanced photocatalytic activity of g-C3N4-LaFeO3 for the water reduction reaction through a mediator free Z-scheme mechanism

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Abstract

Herein, we disclosed the g-C3N4/LaFeO3 nanocomposite photocatatalyst, a mediator-free direct Z-scheme photocatalytic system, prepared using a mechanical mixing method with reliable interfacial interactions. The nanocomposite formation was determined by X-ray diffraction (XRD), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The optical properties of the nanohybrids were also characterized using UV-vis diffuse reflectance spectroscopy (DRS) and photoluminescence (PL) spectroscopy. The results clearly indicated that the g-C3N4/LaFeO3 nanocomposite was effectively fabricated, with reliable interfacial interactions and a good heterojunction interaction between g-C3N4 and LaFeO3, which can considerably enhance the photocatalytic activity as compared to pristine g-C3N4 and LaFeO3. The high HER (1152 μmol h−1 g−1) was also confirmed by the PL spectra, Mott–Schottky plot, electrochemical impedance spectroscopy (EIS), and solid–solid interfacial interactions.

Graphical abstract: The enhanced photocatalytic activity of g-C3N4-LaFeO3 for the water reduction reaction through a mediator free Z-scheme mechanism

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Publication details

The article was received on 26 Feb 2017, accepted on 14 Apr 2017 and first published on 17 Apr 2017


Article type: Research Article
DOI: 10.1039/C7QI00115K
Citation: Inorg. Chem. Front., 2017, Advance Article
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    The enhanced photocatalytic activity of g-C3N4-LaFeO3 for the water reduction reaction through a mediator free Z-scheme mechanism

    S. Acharya, S. Mansingh and K. M. Parida, Inorg. Chem. Front., 2017, Advance Article , DOI: 10.1039/C7QI00115K

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