A review on heterogeneous photocatalysis for environmental remediation: From semiconductors to modification strategies

The enhanced photocatalytic performance and first-principles computational insights of Ba doping-dependent TiO2 quantum dots

“…The calculated pristine TiO 2 band gap was found to be 3.17 eV based on the GGA-1/2 method, which is very close to our measured experimental value and previously reported results. [61][62][63][64][65] The analysis of the partial DOS of pure TiO 2 (Fig. 11a) shows that the upper valence region is mostly dominated by O 2p states, while the lower conduction region is mainly due to the Ti 3d character.…”

Construction of α-Fe2O3/Sulfur-Doped Polyimide Direct Z-Scheme Photocatalyst with Enhanced Solar Light Photocatalytic Activity

“…Moreover, the strong signals of ·OH and ·O 2 – were also simultaneously detected in the presence of the 5FO/SPI and 28FO/SPI composites under full arc light irradiation ( Figure S10 ). Thus, if it is a traditional type-II heterojunction 55 between α-Fe 2 O 3 and SPI ( Figure 12 ), the holes of α-Fe 2 O 3 should transfer to the VB of SPI, which cannot oxidize H 2 O into ·OH and will lead to a more serious photocorrosion. Usually, photocorrosion happens due to the sulfide being oxidized by holes.…”

Molybdenum Disulfide-Based Nanomaterials for Visible-Light-Induced Photocatalysis

“… 2 Visible-light-active photocatalysts have attracted significant attention because of the ease with which they can be prepared and recycled using simple chemical procedures. 4 Figure 1 shows some of the benefits of using photocatalysts for pollutant removal. The ability of these photocatalysts to harvest light is dependent on their band gap energy.…”