In situ synthesis of g-C3N4/TiO2 with {001} and {101} facets coexposed for water remediation

Construction of a double heterojunction between graphite carbon nitride and anatase TiO2 with co-exposed (101) and (001) faces for enhanced photocatalytic degradation

“…87-1526). 32 The diffraction peaks of (101)-(001)-TiO 2 at 25.3°, 37.8°, 48.0°, 53.9°, 55.1°, and 62.7° corresponded to the crystal planes of anatase TiO 2 (PDF#84-1285). 17 The diffraction peaks of g-C 3 N 4 /(101)-(001)-TiO 2 composites with different ratios were similar to those of pure anatase (101)-(001)-TiO 2 , but no characteristic peak of pure g-C 3 N 4 was observed, which was primarily due to the poor crystallinity of g-C 3 N 4 , and the relatively small amount of g-C 3 N 4 in g-C 3 N 4 /(101)-(001)-TiO 2 heterojunctions.…”

“… 37,38 For different proportions of g-C 3 N 4 /(101)-(001)-TiO 2 hybrid materials, the main characteristic peaks of all hybrid materials were clearly seen, indicating that g-C 3 N 4 and (101)-(001)-TiO 2 composite successfully formed. Notably, the absorption peak at 3300–3500 cm −1 corresponded to the stretching vibration of NH/OH, 20 indicating a large number of OH groups on the surface of g-C 3 N 4 /(101)-(001)-TiO 2 , which benefited the photocatalytic redox reaction in contact with organic pollutants.…”

“… 18 When the two crystal planes are exposed at the same time, a surface heterojunction that can effectively inhibit the photogenerated electron–hole recombination forms between them and enhances the photocatalytic performance of anatase TiO 2 . 19 Liang et al 20 used hydrothermal and calcination methods to connect g-C 3 N 4 and the (001) surfaces of to form two type-II heterojunctions. The formation of the heterojunction causes the catalyst to have a narrow band gap and to exhibit obvious visible-light absorption.…”

Anatase TiO2 with Co‐exposed (001) and (101) Surface‐Based Photocatalytic Materials for Energy Conversion and Environmental Purification

“…Proposed bandgap structure and mechanism for photodegradation of organic pollutants and photocatalytic inactivation of E. coli K-12 by g-C 3 N 4 /TiO 2 nanocomposites under visible-light irradiation. [57] plane of g-C N and TiO 2 , and the charge transfer mechanism did not follow the Z-system. However, the introduction of g-C 3 N 4 could enhance the photocatalytic activity of TiO 2 .…”

“…Therefore, g-C 3 N 4 is a rising and suitable candidate for forming a heterojunction with TiO 2 . Using melamine and Ti (SO 4 ) 2 as the precursor and HF as the surface control agent, Liang et al [57] synthesized g-C 3 N 4 / (001)-(101)-TiO 2 nanocomposite by connecting g-C 3 N 4 to the (001) surfaces of (001)-(101)-TiO 2 through hydrothermal and calcination methods. The bandgap energy (2.88 eV) of the composite material was narrower than that of pure TiO 2 (3.2 eV).…”