Surface Defect Engineering in Colored TiO₂ Hollow Spheres Toward Efficient Photocatalysis (Adv. Funct. Mater. 22/2023)

Progress and Outlook of Surface Engineering Strategies in Photocatalytic Materials for Mercury Removal: A Review

“…69 Oxygen vacancies not only act as electron capture centers effectively inhibiting the compounding of electron and hole pairs but also form defective energy levels below the conduction band of the photocatalyst, which is more favorable for electron transport and transfer. 70−72 Liccardo et al 73 obtained TiO 2 photocatalysts with defective structures by a hydrogenation strategy, and photoelectron spectroscopy analysis revealed the presence of oxygen vacancies. The combination of the hollow structure and surface defects broadened the light absorption range to the near-infrared region (1200 nm).…”

“…The photodegradation rates of rhodamine B and tetracycline after 50 min of visible light irradiation were 93.9% and 88.7%, respectively. Liccardo et al 73 prepared TiO 2 photocatalysts with defective engineered nanostructures by a hydrogenation strategy, as shown in Figure 14(a). The hydrogenated TiO 2 was able to broaden the light absorption up to 1200 nm and achieved 82% degradation in photodegradation of the target drug (ciprofloxacin), as shown in Figure 14(b).…”

“…(a) Synthesis program. (b) Efficiency of photodegradation of target drugs (ciprofloxacin) . (a, b) Reproduced with permission from ref .…”

“…Inducing oxygen vacancies as an effective strategy to enhance photocatalytic activity has been widely studied by a large number of scientists . Oxygen vacancies not only act as electron capture centers effectively inhibiting the compounding of electron and hole pairs but also form defective energy levels below the conduction band of the photocatalyst, which is more favorable for electron transport and transfer. − Liccardo et al . obtained TiO 2 photocatalysts with defective structures by a hydrogenation strategy, and photoelectron spectroscopy analysis revealed the presence of oxygen vacancies.…”

In Situ Metal‐Oxygen‐Hydrogen Modified B‐Tio2@Co2P‐X S‐Scheme Heterojunction Effectively Enhanced Charge Separation for Photo‐assisted Uranium Reduction

“…However, the photocatalytic activity of traditional photocatalysts (TiO 2 ) for reducing U (VI) is severely limited due to their weak response to visible light, lack of coordination of active sites, low concentration of photo-generated carriers, etc. [16,17] At present, traditional photocatalysts (TiO 2 ) modification methods mainly include doping, [18] surface defect engineering, [19] and heterojunction construction. [20] Although these strategies can address certain issues present in traditional photocatalysts, simultaneously meeting the requirements of a narrow band gap, efficient separation holes, and abundant active sites poses significant challenges.…”