Fabrication of hollow TiO2 nanospheres for high-capacity and long-life lithium storage

Hollow Mesoporous DOX@TiO2@PDA@HA for Collaborative Chemotherapy and Photothermal Therapy

“…The hollow structure was obtained by alkali etching directly on the basis of SiO 2 @TiO 2 before adopting the silica‐protected calcination method, [33] and it can be observed from Figure 1 a that the SiO 2 @TiO 2 before etching has a more uniform spherical structure, and after etching by NaOH solution (0.1 M, 25 °C, 5 h), the presence of a complete spherical structure was not observed in Figure 1 e. This may be attributed to the production of sodium titanate during the high temperature calcination process, which resulted in the rearrangement of the TiO 2 shell after the alkali etching and the collapse of the original structure, producing a large number of irregular aggregates [28] . Figure 1 b showed that the SiO 2 @TiO 2 was coated with another SiO 2 shell layer on the surface of SiO 2 @TiO 2 to obtain SiO 2 @TiO 2 @SiO 2 and then obtained after etching with NaOH solution, and it can be observed that the etched TiO 2 still had a complete spherical structure and shows an obvious internal hollow structure in Figure 1 c. The particle size was mainly distributed at 191.99 nm (as shown in Figure 1 d).…”

Defect‐rich bronze titanium dioxide ultrathin nanosheets supported on carbon nanotubes for enhanced lithium‐ion storages

“…The corresponding performances of TiO 2 (B)‐CNTs materials as anodes are better to many similar TiO 2 materials (Table 1). 39‐48 …”

“…The corresponding performances of TiO 2 (B)-CNTs materials as anodes are better to many similar TiO 2 materials (Table 1). [39][40][41][42][43][44][45][46][47][48] In order to reveal the excellent ability of TiO 2 (B)-CNTs for enhanced lithium storage performance, a series of electrochemical tests of the two electrodes were performed.…”

Synthesis of hollow sphere structured TiO2 loaded with Ag2O and its photocatalytic activity

“…11 Compared to conventional spherical TiO 2 catalysts, hollow TiO 2 (HT) microspheres with mesoporous structures significantly improved the catalytic activity which can be attributed to their larger specific surface area, more reactive sites, and higher adsorption capacity for organic matter owing to their larger internal cavity. [12][13][14][15] Furthermore, due to its wide bandgap, TiO 2 can be only stimulated by UV light (400 nm), and consequently it can only absorb 2-3% of the sunlight that strikes the Earth's surface. 16 Several studies have reported the modification of its surface with metals (Au, 17 Ag, 18 Pt, 19 Ni, 20 Co 21 ) to effectively improve its photocatalytic efficiency and extend the light absorption range of wide-gap semiconductors to the visible light.…”

“…11 Compared to conventional spherical TiO 2 catalysts, hollow TiO 2 (HT) microspheres with mesoporous structures significantly improved the catalytic activity which can be attributed to their larger specific surface area, more reactive sites, and higher adsorption capacity for organic matter owing to their larger internal cavity. 12–15…”