aUse of Epichlorohydrin as a New, Inexpensive and Highly Efficient Linker for Magnetization of Nano‐metal Oxides: The Extension of using a Covalent Linker as a Third Methodology

Abstract

Epichlorohydrin has been successfully used for coupling nano metal oxides by covalent linkage. Applying this method, a highly efficient and magnetically separable catalyst was synthesized using n‐Fe3O4 and n‐TiO2. This approach is the extension of the third methodology for magnetization of nanoparticles. Stability and catalytic properties of the novel catalyst was investigated by Fourier transform infrared spectroscopy (FT‐IR), field emission scanning electron microscopy (FE‐SEM), thermogravimetric analysis (TGA), X‐ray diffraction (XRD) and vibrating sample magnetometer (VSM). Also, the catalytic activity and selectivity were tested for the oxidation reaction of sulfides to sulfoxides. The catalyst exhibited superior recyclability and reusability. It accomplished six consecutive runs, thoroughly with negligible loss of activity.

The first report of covalently grafted semiconductors; n‐TiO2‐P25@ECH@WO3 as a new, efficient, robust and visible‐light‐responsive photocatalyst

“…Similar to our previous study, 31 nano-TiO 2 -P25 (1.0 g) was dispersed in 8 mL ECH. The suspension then was stirred magnetically at 60 °C for 24 h. Afterwards, the mixture was centrifuged to separate the obtained nanoparticles.…”

“…This approach has lead to the development of cost-efficient and chemically stable heterogeneous nanocatalysts. [31][32][33] Herein, following the new approach of our research on photocatalysts, [34][35][36] we report on a two-step method to construct aTiO 2 -P25-based photocatalyst applying epichlorohydrin (ECH) as a covalent linker. ECH is an inexpensive and useful industrial material possessing two different active sites that can serve as a robust organic linker.…”

Glucose‐assisted preparation of n‐TiO2‐P25/Ag: An efficient and robust photocatalyst for enhancing visible‐light photo‐oxidation of benzyl alcohol

“…Therefore, an optimum percentage of metals on TiO 2 facilitates the photocatalytic activity. [40] Considering the above points in mind, and within the framework of our continuing efforts for design and employ novel heterogeneous nanocatalysts [41][42][43][44][45] and their extension in photocatalytic reactions, [46][47][48][49] in this study, a new way is introduced for Ag deposition on the surface of nano TiO 2 -P25. Several processes have been explored to synthesize composite with Ag nanoparticles successfully.…”

The first report of deep eutectic solvent (DES) nano‐photocatalyst (n‐TiO2‐P25@TDI@DES (urea: ZnCl2)) and its application on selective oxidation of benzyl alcohols to benzaldehydes

“…Following our previous studies on design and synthesis of heterogeneous catalysts, 59,60 the present study is aimed at exploiting the synergetic effects of nano‐TiO 2 ‐P25 and DESs to obtain a new nano photocatalyst. Such a heterogeneous catalyst was prepared by the DES grafting on the nano TiO 2 ‐P25 surface.…”