Surface heterojunction between (001) and (101) facets of ultrafine anatase TiO2 nanocrystals for highly efficient photoreduction CO2 to CH4

CO 2 capture and photocatalytic reduction using bifunctional TiO 2 /MOF nanocomposites under UV–vis irradiation

“…The fitting procedure indicates that this is due to the contribution of an additional Zr 3d peak at 183. bipyramidal morphology observed for natural anatase [51]. This is attributed to the presence of Fions (HF used for TiO 2 synthesis) controlling the morphology and favoring the growth of [001] facets [12,14]. nanoparticles could be clearly observed on the composites as indicated by the white arrows in Figure 4c.…”

“…Semiconductors were the first, and remain, the most extensively investigated materials as photocatalysts. Among them, TiO 2 materials are the most widely investigated photocatalysts due to their high stability, low cost and non-toxic nature [11][12][13]. Pure TiO 2 and TiO 2based composites of various configurations, composition and morphology at the nanoscale have been synthesized and applied in CO 2 photoreduction [14][15][16][17][18].…”

Highly Active Catalytic Ruthenium/TiO2 Nanomaterials for Continuous Production of γ‐Valerolactone

“…[56] In detail,t he peaks at 2 q = 25.27 and 48.018 can be ascribed to the {101} and {200} atomic facets, respectively. [57,58] The crystal size derived from the {101} peak at 2q = 25.278,b yusing the Sherrer equation, was approximately 16.3 nm for all samples.The crystal cell parameters of anatase-phase TiO 2 derived from the XRD pattern are consistent:a = b = 3.78 , c = 9.49 (see detailsi nT able S1 in the Supporting Information). The consistencei nt he XRD patterns indicates that the deposition of the Ru component does not change the crystal structure of TiO 2 .T his is an expected result due to the relativelym ild treatment, in comparison with the calcination treatmento ft he TiO 2 active support.…”

“…N 2 adsorption-desorption isotherms of the as-synthesized materials are plottedi nF igure 2, with similar type IV isotherms, featuring aH 1h ysteresis loop in the relative pressure range of 0.51-0.89, which is indicative of typical mesoporous structures. [58,59] The isotherms showedn early no difference before and after deposition of ruthenium. The BET surfacea reas and average pore sizes for all materials were found to be approximately 40-50 m 2 g À1 and7 .5-7.7 nm, respectively (see details in Ta ble S1 in the Supporting Information).…”

Charge Carriers Cascade in a Ternary TiO2/TiO2/ZnS Heterojunction: A DFT Study

“…[19,20,36,37] Composites can be also created by interfacing two different polymorphs of TiO 2 , [38][39][40][41][42][43] or even two different faces of the same polymorph. [44,45] In this context, several experiments indicated that coexposed anatase (001)-(101) surfaces are highly active in photocatalysis, [44][45][46][47][48] even four times higher than the reference standard P25 TiO 2 mixture. [44] In previous works, we investigated the nature of the anatase (101)-(001) interface by means of Density Functional Theory (DFT) simulations, [49,50] showing that photogenerated charge carriers are efficiently stabilized on the different moieties, as suggested by their band alignment.…”