Mesoporous black N-TiO2−x hollow spheres as efficient visible-light-driven photocatalysts

Mesoporous hollow black TiO2 with controlled lattice disorder degrees for highly efficient visible-light-driven photocatalysis

“…When the catalyst content was increased to 0.28 mg mL −1 , RhB was nearly fully catalyzed in 40 minutes, which is higher than the previous report. 37 In contrast, the control group (0.28 mg mL −1 ) catalyzed only ∼50% in 90 minutes. The variation in the −ln( C / C 0 ) versus the visible-light irradiation time is shown in Fig.…”

“…T350 has the smaller circular arc radius and the larger slope, which means that it has a higher separation efficiency of photoexcited electron–hole pairs than W-TiO 2 . 37 The transient photocurrent responses of W-TiO 2 and T350 are shown in Fig. 11b .…”

Steering the Charge Kinetics in Dual-Functional Photocatalysis by Surface Dipole Moments and Band Edge Modulation: A Defect Study in TiO2-ZnS-rGO Composites

“…1100 cm –1 , which was absent in TiO 2 . Small peaks around 1615–1635 and 3100–3600 cm –1 were ascribed to OH groups adsorbed on the surface . This peak was more intense in the recycled catalysts (TZ-U, TZG-U, and TZG (5%)-U), reflecting mild surface modifications resulting from the adsorption of pollutant molecules.…”

Visible-Light Photocatalytic CO2 Reduction Using Metal-Organic Framework Derived Ni(OH)2 Nanocages: A Synergy from Multiple Light Reflection, Static Charge Transfer, and Oxygen Vacancies

“…When used for photocatalysts, hollowed nanostructures are particularly attractive because of their multiple light reflection and scattering behavior for reinforcing light absorbance, − as well as functioning as nanoreactors with highly exposed active sites for efficient redox charge transfer. − Thus far, numerous strategies have been employed to synthesize such hollowed nanostructures for photocatalysis, including Oswald ripening, , hard/soft template-assisted ensembling, − self-assembly, − chemical etching, , and Kirkendall diffusion. − Nonetheless, it is still challenging to realize a controllable structure and composition tailored for photocatalytic processes in a facile manner. Moreover, previous studies involving hollowed structures for photocatalysis have mainly limited to photoresponsive inorganic materials on which noble metal-based cocatalysts such as Pt and Au nanoparticles are typically deposited to ensure the efficient use of photogenerated carriers. − In the opposite manner, hollowed cocatalysts with potent active sites combined with highly efficient molecular photosensitizers have been rarely obtained.…”

“…20−22 When used for photocatalysts, hollowed nanostructures are particularly attractive because of their multiple light reflection and scattering behavior for reinforcing light absorbance, 23−25 as well as functioning as nanoreactors with highly exposed active sites for efficient redox charge transfer. 26−28 Thus far, numerous strategies have been employed to synthesize such hollowed nanostructures for photocatalysis, including Oswald ripening, 29,30 hard/soft template-assisted ensembling, 31−34 selfassembly, 35−37 chemical etching, 38,39 and Kirkendall diffusion. 40−42 controllable structure and composition tailored for photocatalytic processes in a facile manner.…”