Fabrication of exfoliated graphitic carbon nitride, (g-C<inf>3</inf>N<inf>4</inf>) thin film by methanolic dispersion

Publication Type:
Journal Article
Journal of Alloys and Compounds, 2020, 818
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This paper reports the successful exfoliation of nanosheets from bulk g-C N by using urea as a precursor. The alteration from bulk g-C N powder, changed its semiconductor arrangements such as the optical absorption, chemical bonding, and topography images. A slow direct low thermal treatment (∼40 °C, 24 h) was proposed as a formation of a thinner layer by layer, complete and effective polymerization for an exfoliated g-C N . The photocurrent responses were more than two times higher for exfoliated g-C N compared with bulk g-C N , reaching ∼4.37 μA cm up to 10.21 μA cm at 1.23 vs. (Ag/AgCl). This fabrication method involved dispersing of the highly stable g-C N suspension onto FTO surface via spin coating, followed by a moderate post-annealing temperature at 350 °C. The monolayer g-C N act as a photoelectrode, responding to light and dark current, and maintained its own intrinsic n-types properties. The interaction of the C and N atom with molecules of methanol (CH OH) followed with vibration force (ultrasonication) produces the ultrafast drying and can transmit to disrupt the van der Waals forces within the g-C N structure. Therefore, due to the ability the good performance, the exfoliated g-C N can be envisioned as a potential application such as water splitting, solar cell, and environmental remediation. 3 4 3 4 3 4 3 4 3 4 3 4 3 4 3 3 4 3 4 −2 −2
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