• Home
  • Search Results
  • Cobalt and sulfur co-doped nano-size TiO2 for photodegradation of various dyes and phenol.

Cobalt and sulfur co-doped nano-size TiO2 for photodegradation of various dyes and phenol.

Journal of environmental sciences (China) (2015-11-18)
Asima Siddiqa, Dilshad Masih, Dalaver Anjum, Muhammad Siddiq
ABSTRACT

Various compositions of cobalt and sulfur co-doped titania nano-photocatalyst are synthesized via sol-gel method. A number of techniques including X-ray diffraction (XRD), ultraviolet-visible (UV-Vis), Rutherford backscattering spectrometry (RBS), thermal gravimetric analysis (TGA), Raman, N2 sorption, electron microscopy are used to examine composition, crystalline phase, morphology, distribution of dopants, surface area and optical properties of synthesized materials. The synthesized materials consisted of quasispherical nanoparticles of anatase phase exhibiting a high surface area and homogeneous distribution of dopants. Cobalt and sulfur co-doped titania demonstrated remarkable structural and optical properties leading to an efficient photocatalytic activity for degradation of dyes and phenol under visible light irradiations. Moreover, the effect of dye concentration, catalyst dose and pH on photodegradation behavior of environmental pollutants and recyclability of the catalyst is also examined to optimize the activity of nano-photocatalyst and gain a better understanding of the process.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Acetic acid, glacial, ReagentPlus®, ≥99%
Sigma-Aldrich
Acetic acid, glacial, ACS reagent, ≥99.7%
Sigma-Aldrich
Titanium(IV) isopropoxide, 97%
Sigma-Aldrich
Thiourea, ACS reagent, ≥99.0%
Sigma-Aldrich
Phenol solution, BioReagent, Equilibrated with 10 mM Tris HCl, pH 8.0, 1 mM EDTA, for molecular biology
Sigma-Aldrich
Acetic acid, glacial, puriss., meets analytical specification of Ph. Eur., BP, USP, FCC, 99.8-100.5%
Sigma-Aldrich
Cobalt(II) nitrate hexahydrate, ACS reagent, ≥98%
Sigma-Aldrich
Phenol, puriss. p.a., ACS reagent, reag. Ph. Eur., 99.0-100.5%
Sigma-Aldrich
Phenol, for molecular biology
Sigma-Aldrich
Acetic acid, glacial, ≥99.99% trace metals basis
Sigma-Aldrich
Liquified Phenol, ≥89.0%
Sigma-Aldrich
Ethyl alcohol, Pure, 200 proof, meets USP testing specifications
Sigma-Aldrich
Phenol, BioXtra, ≥99.5% (GC)
Sigma-Aldrich
Acetic acid, natural, ≥99.5%, FG
Sigma-Aldrich
Thiourea, ReagentPlus®, ≥99.0%
Sigma-Aldrich
Acetic acid solution, suitable for HPLC
Sigma-Aldrich
Phenol solution, Saturated with 0.1 M citrate buffer, pH 4.3 ± 0.2, BioReagent, for molecular biology
Sigma-Aldrich
Titanium(IV) isopropoxide, 99.999% trace metals basis
Sigma-Aldrich
Phenol, ≥99%
Sigma-Aldrich
Acetic acid, glacial, puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99.8%
Sigma-Aldrich
Cobalt(II) nitrate hexahydrate, reagent grade, 98%
Sigma-Aldrich
Titanium(IV) isopropoxide, ≥97.0%
Sigma-Aldrich
Cobalt(II) nitrate hexahydrate, 99.999% trace metals basis
Sigma-Aldrich
Phenol, contains hypophosphorous as stabilizer, loose crystals, ACS reagent, ≥99.0%
Supelco
Ethanol solution, certified reference material, 2000 μg/mL in methanol
Sigma-Aldrich
Acetic acid, ≥99.5%, FCC, FG
Sigma-Aldrich
Phenol, unstabilized, ReagentPlus®, ≥99%
Sigma-Aldrich
Phenol, puriss., meets analytical specification of Ph. Eur., BP, USP, 99.5-100.5% (GC)
Supelco
Phenol solution, certified reference material, 500 μg/mL in methanol
Sigma-Aldrich
Phenol, BioUltra, for molecular biology, TE-saturated, ~73% (T)