Highly-efficient photocatalytic hydrogen evolution triggered by spatial confinement effects over co-crystal templated boron-doped carbon nitride hollow nanotubes

Abstract

Conversion of solar energy into hydrogen energy through photocatalytic water splitting is vital to addressing the energy crisis problem and achieving carbon neutrality. Herein, the boron-doped carbon nitride (BCN) hollow...

Isotype heterojunction: tuning the heptazine/triazine phase of crystalline nitrogen-rich C3N5 towards multifunctional photocatalytic applications

“…At 420 nm, CC3N5-500 had an AQE of 12.86%, which is higher than that of other single materials or doped carbon nitride photocatalysts reported to date. 63–66 The AQE action spectrum of the CC3N5-500 sample indicates that it is able to generate H 2 in the visible light range up to 450 nm, consistent with the UV-Vis spectrum.…”

“…At 420 nm, CC3N5-500 had an AQE of 12.86%, which is higher than that of other single materials or doped carbon nitride photocatalysts reported to date. [63][64][65][66] The AQE action spectrum of the CC3N5-500 sample indicates that it is able to generate H 2 in the visible light range up to 450 nm, consistent with the UV-Vis spectrum. Apart from the HER half-reaction, the crystalline carbon nitride semiconductor also demonstrates a significant improvement toward simultaneous photocatalytic HER and benzyl alcohol oxidation.…”

Intrinsically Functionalized Fe/C3N4 Nanotubes Display pH-Dependent Oxygen Reduction Overpotentials

“…The two-dimensional graphitic C 3 N 4 (g-C 3 N 4 ) is geometrically similar to graphene − and can also be rolled into 1D carbon nitride nanotubes (CNNTs). − Experimentally, the potentials of elementary doping, ,,,,, functionalization, nanoparticle adsorption, ,,, or metal decoration ,,,− , on CNNTs as photocatalysts have been widely reported. The theoretical explorations on different CNNTs have also been largely focused on photocatalytic applications. ,,− ,, In principle, the potential applications of the CNNTs could be as versatile as the 2D g-C 3 N 4 but with varied performances due to the curvature effect or the chirality.…”

“…The two-dimensional graphitic C 3 N 4 (g-C 3 N 4 ) is geometrically similar to graphene − and can also be rolled into 1D carbon nitride nanotubes (CNNTs). − Experimentally, the potentials of elementary doping, ,,,,, functionalization, nanoparticle adsorption, ,,, or metal decoration ,,,− , on CNNTs as photocatalysts have been widely reported. The theoretical explorations on different CNNTs have also been largely focused on photocatalytic applications. ,,− ,, In principle, the potential applications of the CNNTs could be as versatile as the 2D g-C 3 N 4 but with varied performances due to the curvature effect or the chirality. The well-known FeN x active center on graphene has shown comparable performance with Pt in ORR experimentally, ,,− and have also attracted many theoretical discussions. ,− While the modified or decorated 2D g-C 3 N 4 has been explored in the battery applications, ,− the potentials of Fe-decorated CNNTs , for ORR operations have never been evaluated.…”

“…5 The two-dimensional graphitic C 3 N 4 (g-C 3 N 4 ) is geometrically similar to graphene 5−7 and can also be rolled into 1D carbon nitride nanotubes (CNNTs). 8−28 Experimentally, the potentials of elementary doping, 12,13,20,21,23,28 functionalization, 14 nanoparticle adsorption, 15,18,24,27 or metal decoration 12,16,17,[19][20][21][22][23]25 on CNNTs as photocatalysts have been widely reported. The theoretical explorations on different CNNTs have also been largely focused on photocatalytic applications.…”