3D‐Ordered Mesoporous Chromium‐Doped Titania Thin Films: The Effect of Metal Dopant on the Microstructure, Mesoporous Symmetry, Hydrophobicity, and Surface Properties

Abstract

Attention to the mesoporous metal doped titania thin films has been increased significantly due to its wide potential applications, especially in photocatalytic activities. Determining the effect of surface property, mesoporous symmetry and metal dopant in mesoporous thin films materials have rarely reported, in particular, there are essential factors determining the performance of these materials. Herein, Cr@mesoporous titania thin films prepared by the sol‐gel approach. The surface properties of the thin films, as well as crystal structure, mesoporous symmetry, hydrophobicity, and surface morphology, were deeply discussed. Power spectral density and bearing analysis were calculated using atomic force microscopy. The results confirm that the thickness of all films was completely uniform without flooding, made by randomly oriented fine grains, and mesoporous structure. The Cr particles act as a porous site eliminator and increased the lattice mismatch in mesoporous titania thin films. The surface roughness, power spectral density, bearing area, and water contact angle of the films were significantly affected by Cr content. As the Cr content is increased, the porosities shrunk together and denser films were obtained. The roughness values display that the presence of Cr increases the homogeneity and the smoothness of the thin film surface with small grain size.

Albumin Protein Impact on Early-Stage In Vitro Biodegradation of Magnesium Alloy (WE43)

“…The SKPFM maps of the samples after adding BSA to the solution are noticeably different from those seen in the unmodified solution ( Figure 6 ). The histographic distributions of surface roughness 57 and electrical surface potential were taken from Figure 6 and displayed in Figure 8 to better comprehend the effect of both inorganic species in Hanks’ media and protein molecules. Incorporating BSA into the NaCl solution led the SKPFM histogram to display a heterogeneous (due to a continuous network of dense protein or cluster domains) and a lower surface potential distribution than a blank NaCl solution.…”

A review on the progress of nanostructure materials for energy harnessing and environmental remediation

“…Imani et al, adopted sol-gel approach for doping Cr into titania thin films forming cubic, hexagonal, and worm-like morphologies due to varied dopant concentration. The Cr doping increased the lattice mismatch, resulting in microstructural coarsening [216]. Sayikan and team approached hydrothermally to synthesize Sn-doped TiO 2 nanoparticles and further developed a thin film by spin coating.…”

Self‐Assembly Assisted Fabrication of Nanoporous Nickel (II) Phosphate Octahydrate Microspheres Catalyst with Orange Peel Surface toward Urea Oxidation

“…Nanoporous solids have been fabricated beyond a variety of substances, including nitrate, carbonate, silicate, phosphate and various organic materials. A completely new class of nanoporous materials has recently been developed, which results from the use of self‐assembly to create a porous structure and have been used as an effective catalyst for decades …”

“…A completely new class of nanoporous materials has recently been developed, which results from the use of self-assembly to create a porous structure and have been used as an effective catalyst for decades . [1][2][3][4][5][6] Nowadays, researchers tend to control the synthesis conditions for desirable shape and high specific surface area of the nanoporous metal phosphate materials catalysts due to their stability, high catalytic activity, and exclusive structure for simplifying the electrocatalytic reaction at the interface between electrode and electrolyte in some application such as sensors, lithium-ion batteries, etc. [7,8] The aim of all synthesis procedures is to retard the rapid condensation reactions of the inorganic precursors, which lead to the formation of bulk materials and uncontrolled phase separation between the organic and inorganic components.…”