Titanium dioxide (TiO2) is a well-studied photocatalyst that is known to break down organic molecules upon ultraviolet (UV) irradiation. Cellulose nanofibers (CNFs) act as an attractive matrix material for the suspension of photocatalytic particles due to their desirable mechanical and optical properties. In this work, TiO2-CNF composite films were fabricated and evaluated for photocatalytic ac...

The reaction mechanism of CO oxidation on Au/TiO2 catalysts remains elusive. Here, we employ density functional theory calculations to gain an understanding of several important aspects of the system, including CO adsorption, the active oxygen species, catalyst deactivation, and the promoting effect of moisture on catalytic activity. Distinct from previous theoretical studies, which tend to add...

A supported gold nanoparticle-catalyzed strategy has been utilized to promote a click chemistry reaction for the synthesis of 1,2,3-triazoles via azide-alkyne cycloaddition (AAC) reaction. While advent effective non-copper catalysts (i.e., Ru, Ag, Ir) demonstrated catalysis AAC reaction, additional robust catalytic systems complementary copper catalyzed remain in high demand. Herein, Au nanopar...

The highly dispersed metal (e.g. Au) nanoparticles have exhibited exceptional catalytic activity for several reactions, including CO oxidation. Their high catalytic activity has been attributed to nanoparticles nano-structural effects (including cluster thickness, shape, chemical information, and number of atoms of the cluster). The three dimensional exact structure and chemical bonding state o...

The composites Au/SiO2, Au/TiO2, Au/Al2O3, ZnO/TiO2, ZnO/Al2O3 and Eu2O3/SiO2, Eu2O3/TiO2 Eu2O3/Al2O3 were prepared using a solid-state method. effect of the polymer precursors was investigated two precursor polymers, Chitosan Poly(styrene-co-4vinylpyridine), (PS-co-4-PVP) in M/MxLy•Chitosan//M’xO’y as well M/MxLy•PS-co-4-PVP//M’xO’y with M’xO’y = SiO2, TiO2 Al2O3. effects on particle size morp...

The recent thrust in utilizing atomically precise organic ligands protected gold clusters (Au clusters) as photosensitizer coupled with semiconductors for nano-catalysts has led to the claims of improved efficiency in photocatalysis. Nonetheless, the influence of photo-stability of organic ligands protected-Au clusters at the Au/semiconductor interface on the photocatalytic properties remains r...

The effect of the nanoparticles on the marine organisms, depends on their size, chemical composition, surface structure, solubility and shape. In order to take advantage from their activity, preserving the surrounding environment from a possible pollution, we are trying to trap the nanoparticles into new nanomaterials. The nanomaterials tested were synthesized proposing a ground-breaking approa...

The epoxidation of propene without forming a substantial amount byproducts is one the holy grails catalysis. Supported Cu, Ag and Au catalysts are studied for this reaction activity supported metals generally well understood. On contrary, limited information available on influence support epoxide selectivity. with equal amounts hydrogen oxygen was tested over gold nanoparticles deposited onto C...

The gold-containing titanium peroxo-complex AuCl4(NH4)7[Ti4(O2)4(Hcit)2(cit)2].12H2O 1 allows an easy reproducible access to pure Au/TiO2 composites.

Gold nanoparticles were prepared and characterized on protonated (H-form) titanate nanotubes (TiONTs) and nanowires (TiONWs). The chemical nature and morphology of gold particles were monitored by X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, X-ray diffraction (XRD) and high resolution electron microscopy (HRTEM). The optical properties of Au-containing titanate nanowires were exp...