We present a novel surface-enhanced Raman scattering (SERS) substrate based on graphene oxide/silver nanoparticles/copper film covered silicon pyramid arrays (GO/AgNPs/PCu@Si) by a low-cost and simple method. The GO/AgNPs/PCu@Si substrate presents high sensitivity, good homogeneity and well stability with R6G molecules as a probe. The detected concentration of Rhodamine 6 G (R6G) is as low as 1...

Adsorption of crystal violet (CV) in aqueous solution on commercial activated carbon (CAC) and activated carbon obtained from Syzygium cumini seed (SCSC) have been studied comparatively. The effect of various experimental parameters has been investigated using a batch adsorption technique to obtain information on treating effluents from the dye industry. The extent of dye removal increased with...

Silver colloids of uniform shape and size are prepared by a two-step reduction. Small silver particles form initially by the rapid reduction of silver nitrate with sodium citrate at 100°C and then grow at 92°C. The reaction processes and resulting silver colloids are characterized by transmission electron microscopy, ultraviolet-visible absorption spectrophotometry, zeta-potential measurements,...

A capillary electrophoresis Raman spectroscopy (CE-RS) method based on the stacking and sweeping modes are described. A non-fluorescent compound (malachite green, MG; crystal violet, CV) and a doubled Nd:YAG laser (532 nm, 300 mW) were selected as the model compound and light source, respectively. In order to carry out a quantitative and analysis of MG, a monochromator was used to collect the s...

The goal of this comparative study was to investigate biofilm forming microorganisms living in washing machines (WMs). Biofilms were sampled from 11 washing machines from four countries and three continents. Among the 94 isolated strains, 30% were potential human pathogens. Representative strains were selected and biofilm formation was evaluated with the crystal violet (CV) assay. The majority ...

Purpose Argan nutshell wood (ANW) has been used in this study as an agricultural solid waste to remove Congo red (CR) from aqueous solution single and mixture binary the presence of methylene blue (MB) or crystal violet (CV). Design/methodology/approach The ANW was characterized by Fourier transform infrared scanning electron microscope analysis. effect dose (8–40 gL −1 ), contact time (0–180 m...

Compared with the single metal, multi-metallic nanoparticles (NPs) have excellent localized surface plasmon resonance (LSPR) a wide spectral range response, which is beneficial to improve photoinduced electron transfer efficiency and promote effective electron-hole separation. In this paper, urchin-like Au-Ag-Pt-Pd nanoalloys (Au-Ag-Pt-Pd NUs) multiple tentacles were successfully synthesized by...

Abstract In the present study, nano-silver-doped flax fibers (NAgDFF) are prepared in two steps. first step, oxidation of is performed by potassium periodate to form dialdehyde cellulose (DAC) and second step reduction silver ions DAC. A series characterization techniques photocatalyst NAgDFF was carried out using scanning electron microscopy, Fourier transform infrared spectroscopy, N 2 adsorp...

Abstract Among the biggest issues facing world now are fuel shortages and water contamination. Therefore, goal of current study was directed to produce bioethanol from Jatropha curcas leaves use residual wastes in form composite sheets for crystal violet (CV) removal. The were collected , irrigated by various irrigation sources; sewage-water (A), sewage-water-sludge (B), tap (C). acid hydrolysi...