Ionic liquid-enhanced immobilization of biosynthesized Au nanoparticles on TS-1 toward efficient catalysts for propylene epoxidation

Kinetics of liquid phase oxidation of benzyl alcohol with hydrogen peroxide over bio-reduced Au/TS-1 catalysts

“…On the other hand, different preparation procedures result in variations in the particle sizes of Au nanoparticle catalysts and the reduction method is a more advantageous way to prepare Au particles with narrow size distributions and desired diameters [18]. Our group has paid continuing effort to exploit the plant extract as bio-reducing agents for preparation of Au catalysts [19][20][21], and we recently reported the first example of Au/TS-1 catalysts designed via bioreduction method, which shown excellent performance for the selective oxidation of BzOH to BzH with aqueous H 2 O 2 achieving simultaneous high activity, high recyclability and remarkable stability [22].…”

Microorganism-mediated, CTAB-directed aggregation of Au nanostructures around Escherichia coli cells: Towards enhanced Au recovery through coordination of cell-CTAB–ascorbic acid

“…after 2 h. The Au precursor could not be reduced to elemental Au in 2 h by ECCs without AA though some Au ions might be bound to the cells. It should be noted that CTAB can react with Au ions to form [AuCl 3 Br] À or CTAB-Au(III) complexes [25], resulting in the difference in color between (c) and (d) at the beginning. Solution (e) shows the production of Au immediately after the Au ions come in contact with AA in the presence of ECCs but in the absence of CTAB.…”

“…Recovery of gold from both primary and secondary sources is of great significance due to the great demand for gold [1][2][3][4][5]. A variety of methods including cementation, chemical precipitation, solvent extraction, ion exchange, adsorption, biosorption, etc.…”

Efficient Ag/CeO2 catalysts for CO oxidation prepared with microwave-assisted biosynthesis

“…The UV-Vis adsorption spectra of the Ag colloids were recorded by a Thermal [34]. FTIR spectrum of the Ag NPs was recorded on a Nicolet 6700 FTIR spectrometer (Thermo Fisher) to ascertain the adsorbed biomolecules.…”