A practical method for the selective and controlled oxidation of thioglycosides to corresponding glycosyl sulfoxides and sulfones is reported using urea-hydrogen peroxide (UHP). A wide range of glycosyl sulfoxides are selectively achieved using 1.5 equiv of UHP at 60 °C while corresponding sulfones are achieved using 2.5 equiv of UHP at 80 °C in acetic acid. Remarkably, oxidation susceptible ol...

Water Oxidation A uniform ZnO passivator is coated on BiVO4 photoanode for selective water oxidation to produce H2O2. Photoelectrochemical impedance spectroscopy demonstrates that the coating facilitates H2O2 synthesis by modulating surface charge transfer behaviour through regulation of interfacial energetics. Furthermore, suppresses decomposition and accelerates extraction from promoted produ...

The activation and use of oxygen for the oxidation and functionalization of organic substrates are among the most important reactions in a chemist's toolbox. Nevertheless, despite the vast literature on catalytic oxidation, the phenomenon of autoxidation, an ever-present background reaction that occurs in virtually every oxidation process, is often neglected. In contrast, autoxidation can affec...

The selective oxidation of thiols to disulfides and sulfides to sulfoxides using graphite oxide (GO), a heterogeneous carbocatalyst obtained from low cost, commercial starting materials is described. The aforementioned oxidation reactions were found to proceed rapidly (as short as 10 min in some cases) and in good yield (51-100%) (19 examples). No over-oxidation of the substrates was observed, ...

We report on the successful fabrication of silicon quantum wires with SiO 2 boundaries on SiGe/Si heterostructures by combining Si/SiGe/Si heteroepitaxy, selective chemical etching, and subsequent thermal oxidation. The observational result of scanning electron microscope is demonstrated. The present method provides a well-controllable way to fabricate silicon quantum wires. PACS: 81.15; 81.60;...

We designed a series of hollow amorphous nanomaterials based on aMIL-100 with metal nodes Fe, Cr, Al and Sc by sandwiching nanoparticles in between metal–organic frameworks enhanced diffusion for highly selective benzene oxidation.

The selective oxidation of methane to methanol, using in situ generated H 2 O has been investigated a series TS-1 supported palladium-based catalysts, with the introduction Au or Ni considerably improving catalytic performance.

Introduction Selective oxidation of organic compounds is one of the major challenges facing the chemical industry. The selective transformation of alcohols to aldehydes and ketones, in particular, is among the most important synthetic operations in organic chemistry. Numerous methods have been reported and widely used for this purpose utilizing various organic and inorganic oxidants, for exampl...