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In this paper, silver nanoparticles-coated silicon wafer (AgNPs@Si) was used as surface-enhanced Raman scattering (SERS) substrate for detection of 6-Thioguanine (6-TG). The influence of experimental parameters including pH value and soaking time on SERS performance were examined. The SERS characteristic peak of 6-TG at 1303cm−1 was selected for quantity analysis. With the 521cm−1 band of silicon...
Hydroxyapatite (HAP) could be a kind of potential low cost and biocompatible adsorbent for potentially toxic metals due to its special chemical composition and crystal structure. Humic acid (HA) modified HAP nanoparticles (HAP/HA) was prepared to adsorb Cu(II) ions from aqueous solution. The obtained materials were characterized by powder X-ray diffraction (XRD), Fourier transform infrared (FTIR)...
In the oil exploitation process, the conversion from water-in-oil emulsion to oil-in-water emulsion is usually needed for a better cementing quality after using the water-in-oil emulsion drilling fluid. Due to the advantages of both oil-external properties for drilling and water-external characteristics for completion, the reversible emulsion drilling fluids are being used in drilling industry. The...
Au@Pt nanoparticles are prepared in this paper by successive reduction of HAuCl 4 and H 2 PtCl 6 precursors. The morphology of Au@Pt nanoparticles is characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) and core (Au)-shell (Pt) like structure is observed. The electrocatalytic property of Au@Pt catalyst for methanol oxidation is investigated...
Uniform and porous Al coatings on FeCrAl substrate were prepared using an efficient electrophoretic deposition (EPD) in absolute ethanol suspension. The zeta potential and viscosity of suspension were measured to determine the optimal AlCl 3 ·6H 2 O concentration for deposition. The most homogeneous coatings were obtained with 0.5mM AlCl 3 ·6H 2 O as the electrolyte...
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