Design of iso-material heterostructures of TiO₂via seed mediated growth and arrested phase transitions

Abstract

Stabilization of different morphologies of iso-material native/non-native heterostructures is important for electron-hole separation in the context of photo-electrochemical and opto-electronic devices. In this regard, we explore the stabilities of different...

Ag Decoration and SnO2 Coupling Modified Anatase/Rutile Mixed Crystal TiO2 Composite Photocatalyst for Enhancement of Photocatalytic Degradation towards Tetracycline Hydrochloride

“…It is observed in Figure 3 a that the particle size of pure TiO 2 is about 20–30 nm. In Figure 3 c, the marked interplanar spacing 0.348 nm corresponds to the anatase (101) crystal plane, and 0.326 nm corresponds to the rutile (110) crystal plane [ 7 , 31 , 32 ], indicating that pure TiO 2 is composed of anatase and rutile and exhibits a mixed crystal structure. The particle size in Figure 3 b is slightly smaller than pure TiO 2 , which is in the range of 15–20 nm.…”

The role of positively charge poly-L-lysine in the formation of high yield gold nanoplates on the surface for plasmonic sensing application

“…cetyltrimethyl ammonium bromide (CTAB), hexamethylenetetramine (HMT) and poly (vinyl pyrrolidone) (PVP) were used during the synthesis process to control the growth of NPs and prevent the particles from aggregation. Owing to a tremendous progress in MNPs researches, a variety of structures have been formed using numerous types of metal using SMGM such as gold [ 17 , 18 ], platinum [ 19 ], silver [ 20 ] and titanium [ 21 ]. Gold nanoparticles (AuNPs) are actively studied because its stability, biocompatibility as well as high carrier capability features.…”

Size Reducing Rupture during “Growth” of LnF3 (Ln = La, Lu, Y) Nanocrystals Due to Cogeneration of Structure and Stress

“…Investigations on the architectural engineering and growth of nanomaterials haves enabled the manipulation of crystal shape, size distribution, polymorphism, and the associated physicochemical properties. − In the generation of nanomaterials via colloidal synthesis, the transit pathway from the homogeneous liquid solution to solid crystalline phases involves several intermediate steps with changes in density and symmetry that are not properly understood due to limited direct experimental observations at the appropriate time scales. − With the advent of powerful characterization tools (e.g. high-resolution electron microscopy) and in situ techniques coupled with computational simulations, there is a better comprehension of the intermediate steps. − Herein, we report a previously unrecognized growth mechanism, in contrast to the classical nucleation theory (CNT) and Ostwald ripening, − which is supported by experiments and computations. While CNT is evoked to explain nucleation from a supersaturated solution, the theory has to be modified to capture metastable intermediates and such intermediates have been proposed in epitaxial growth at the solid–vapor interface …”