Heat treatment to prepare boron doped g-C3N4 nanodots/carbon-rich g-C3N4 nanosheets heterojunction with enhanced photocatalytic performance for water splitting hydrogen evolution

A review on the advancements of graphitic carbon nitride-based photoelectrodes for photoelectrochemical water splitting

“…The promotion of PEC activity by the synergistic effect of heteroatom doping/heterojunction formation/cocatalyst deposition on interfacial charge transfer has also been demonstrated. 158–165…”

“…161 A heat treatment strategy was used for the preparation of B-doped graphitic carbon dots/C rich g-C 3 N 4 heterojunction composites with higher photocatalytic and photoelectrochemical activity. 162…”

“…The promotion of PEC activity by the synergistic effect of heteroatom doping/ heterojunction formation/cocatalyst deposition on interfacial charge transfer has also been demonstrated. [158][159][160][161][162][163][164][165] A drastic narrowing of the bandgap in P-doped g-C 3 N 4 enabled near-infrared light-induced PEC water splitting, generating a photocurrent density of 1.4 mA cm À2 at 1.2 V Ag/AgCl and H 2 evolution of 1.27 mmol h À1 g À1 at 0.6 V with reference to the Ag/AgCl electrode. 166 The delocalisation of the isolated electrons into the p-conjugated structure of g-C 3 N 4 , generated a positively charged centre at the P atom inhibiting the charge recombination.…”

Synthesis of Sulfur@g-C3N4 and CuS@g-C3N4 Catalysts for Hydrogen Production from Sodium Borohydride

“…A common method for defect control involves changing the number of vacancies in order to improve the material’s photocatalytic H 2 evolution rate, nonlinear optical characteristics, and other physical and chemical features. Accordingly, different S [ 20 ], P [ 21 ], B [ 22 ] and TiO 2 [ 23 ] integrated g-C 3 N 4 were employed for catalytic hydrogen evolution. The presence of doping S in the matrix of g-C 3 N 4 leads to the reduction of their band gap, induced charge rearrangement and improved the electron–hole separation.…”

Supermolecule Polymer Derived Porous Carbon Nitride Microspheres with Controllable Energy Band Structure for Photocatalytic Hydrogen Evolution Reaction

“…Howbeit, the unfavorable utilization rate of visible light, easy recombination of photogenerated charges, and adverse electronic conductivity limit the further improvement of its photocatalytic performance. [12,13] Doping with heteroatoms (B, P, S), [14,15] surface functionalization, [16,17] heterostructure construction, [18,19] and recombination with cocatalysts are effective tactics to overcome the above drawbacks. [9,[20][21][22][23][24][25][26][27] Especially, energy band engineering and the construction of morphology structures with large SSA and unobstructed electron transport channels, which are promising maneuvers to enhance the material's light absorption and weaken the recombination photo-generated charges.…”