Rich oxygen vacancies, mesoporous TiO₂ derived from MIL-125 for highly efficient photocatalytic hydrogen evolution

Abstract

Here we report a mesoporous TiO2 with large specific surface area and rich oxygen vacancies using Ti-based MOF (MIL-125) as precursor through high-temperature annealing. Such integration of unique mesoporous structure...

Type II heterojunction promotes photoinduced effects of TiO2 for enhancing photocatalytic performance

“…Similarly, such a phenomenon also appears for the TiO 2 photocatalyst, which is widely used for photocatalytic hydrogen production. [10][11][12][13] Previous reports have shown that Ti 4+ on the TiO 2 surface captures the photogenerated electrons and generates the active species Ti 3+ under UV irradiation. 14,15 To balance the charge, oxygen vacancies are inevitably produced around the Ti 3+ species.…”

Unique and Excellent Paintable Liquid Metal for Fluorescent Displays

“…There are a large number of oxygen vacancies in the fluorescent sample. 62 It is worth noting that the elements of the LM doped in the substrate are in positive oxidation states, which further confirms that the Ga, Bi, In, and Sn were doped in the substrate to form substitution impurities in the form of ions. This is consistent with our study above.…”

Highly enhanced photocatalytic hydrogen evolution activity by modifying the surface of TiO2 nanoparticles with a high proportion of single Cu atoms

“…Under the irradiation, electron–hole pairs are generated in the sample. The reaction process is as follows: 27 H 2 O + h + → ˙OH + H + CH 3 OH + ˙OH → ˙CH 2 OH + H 2 OCH 2 OH → HCHO + H + + e − 2H + + 2e − → H 2 After separation of the electro–hole pairs, electrons (e − ) flow out in the conduction band to reduce the H + (step (e)). The holes (h + ) help with the generation of H + and oxidize the sacrificial agent (CH 3 OH) into HCHO.…”

“…Under the irradiation, electron-hole pairs are generated in the sample. The reaction process is as follows: 27 photocatalyst…”