Activation of graphitic carbon nitride (g-C3N4) by alkaline hydrothermal treatment for photocatalytic NO oxidation in gas phase

Condensed and low-defected graphitic carbon nitride with enhanced photocatalytic hydrogen evolution under visible light irradiation

“…In addition, Li et al prepared C 3 N 4 nanorods with a more condensed network using AAO membrane as a template [31]. Alkaline hydrothermal treatment of C 3 N 4 was undertaken to remove unstable domains of not-well-ordered C 3 N 4 by hydrolysis [32]. From these process optimizations, the defects level of C 3 N 4 was decreased and the degree of polymerization was improved.…”

Facile synthesis of g-C3N4 nanosheets loaded with WO3 nanoparticles with enhanced photocatalytic performance under visible light irradiation

“…[12][13][14] Many efforts have been made to overcome these bottlenecks. It was reported that ultrasonic vibration, 15 thermal exfoliation 16 and hydrothermal treatment 17 could be used to change the BET surface area. Meanwhile, doping, 18 noble metal loading 19 and coupling with other semiconductors 8 are also effective methods to achieve the separation of carriers and then further increase the photocatalytic performance under visible light illumination.…”

Enhanced photocatalytic performance of g-C3N4 nanosheets–BiOBr hybrids

“…However, the catalytic efficiency is quite low due to the high recombination rate of excited charge carriers. As a result, advancement of g-C 3 N 4 structure is extremely desired to avoid this shortcoming and mainly associates with the construction of mesoporous structure [23,24], doping with metal or nonmetal elements [25][26][27][28], composting with other semiconductors [29][30][31][32][33], and exfoliation of bulk form into nanosheets [34][35][36][37]. In particular, the exfoliation of bulk g-C 3 N 4 to nanosheets is able to reduce the edge thickness and create new exposed surface, easily leading to the enlarged specific surface area, enhanced charge carriers motilities through reduced migration distances, and variable conduction and valence band positions, which is favorable to the enhancement of photocatalytic performance [34,36].…”