Type-II band alignment in CNT-modified SrTiO3-Fe2TiO5 heterostructure nanocomposite for photocatalytic degradation of organic dyes

Degradation of Pollutants and Photocatalytic H2 Evolution Using Carbon Nanotube/Ag Nanoparticle-Modified BaTiO3 Nanoparticles

“…Notably, the S1 sample undergoes pronounced alterations in its optical profile, signifying the impact of the CNT and Ag metallic nanoparticles. The discernible redshift in absorbance curves unveils an enhanced capacity for visible light absorption within the BaTiO 3 phase, attributed to the synergistic influence of CNT and Ag. − This transformative interaction suggests a concomitant reduction in the band gap value, indicative of the underlying modifications in electronic bonds. To quantify these alterations, we employ the Tauc equation (eq ): false( α h ν false) 2 = A false( normalh ν ‐ E normalg false) where E g , ν, h , A , and α are the band gap energy, light frequency, Planck’s constant, a constant, and absorption coefficient, respectively.…”

“…This arrangement effectively improves photocatalytic properties by diminishing the electron–hole recombination rate. Furthermore, CNTs function as rapid transfer channels for electrons, diminishing the recombination rate of electron/hole pairs and consequently enhancing charge transfer and the photocatalytic performance of the material. , …”

“…The simpler molecular combination of the MB dye contributes to better photodegradation compared to the more complex structures of RhB and MO molecules. 43 In the assessment of photocatalysts for large-scale usage, the S3 sample reusability was investigated for MB degradation by subjecting it to a four-cycle repeatability test under the optimized conditions suggested by the DOE. Figure 8b demonstrates that the S3 sample did not change after two cycles, a roughly 1% decrease in photocatalytic activity after three photodegradation cycles and a 3% decrease in the fourth cycle.…”

“…Furthermore, CNTs function as rapid transfer channels for electrons, diminishing the recombination rate of electron/hole pairs and consequently enhancing charge transfer and the photocatalytic performance of the material. 43,66 Considering the standard potentials, where the BaTiO 3 CB and Ag surface plasmon (SP) state are further negative compared to the potential of O 2 /O 2…”

Study on the Photocatalytic Degradation of Tetracycline Using SrBi4Ti4O15 Nano Photocatalyst Prepared by Electrospinning Method

“…Various semiconductor photocatalysts have been applied to water pollution treatment, including Bi2O3 [9], g-C3N4 [10], SrTiO3 [11], and BiOBr [12]. Among them, the electrostatic field formed by layered bismuth-based semiconductor materials between the [Bi2O2] 2+ sheet and polyhedral layer can enhance the transmission efficiency of photo-generated carriers [13].…”