Green synthesis of Au-rGO nanocomposite and its catalytic activity in nitro-reduction and degradation of dyes
17
Citation
54
Reference
10
Related Paper
Citation Trend
Abstract:
An eco-friendly, very simple method for synthesis of gold-reduced graphene oxide nanocomposite was developed using leaf extract of Piper pedicellatum C.DC. Its characterization was done by UV–visible, FT-IR, XRD, XPS, Raman, TGA, EDX, TEM analysis. The nanocomposite was very efficiently utilized as catalyst for reduction reaction of 3-nitroaniline and 4-nitrophenol. The kinetic and rate constant of nitro-reduction also reported in this study. The nanocomposite showed excellent catalytic activity for reduction of nitro aromatic compound within very short period of time. The dye which are used in industries such as rhodamine B, methyl red, methyl orange, methylene blue and bromocresol green were degraded rapidly and efficiently in a photocatalytic pathway by the as-synthesized Au-rGO nanocomposite with only 6% activity loss in degradation after the 10th cycle. So, Au-rGO composite has significant catalytic activity in nitroreduction and photocatalytic degradation of dye molecules under sunlight.Keywords:
Methyl orange
Rhodamine B
Methylene blue
A facile route was demonstrated to obtain an efficient graphene-hybridized TiO2 photocatalyst. The photodegradation results of Methylene Blue over graphene hybridized with TiO2 showed that the photocatalytic activity could be significantly enhanced under UV light irradiation. The structure between TiO2 and graphene as well as its effect on the photocatalytic activity were systematically investigated. The mechanism of the enhanced photocatalytic activity is based to the high migration efficiency and the inhibition of recombination of photoinduced electron-hole pairs. The graphene hydridization is proven to be a promising approach to develop highly efficient and stable photocatalysts under UV light irradiation.
Methylene blue
Photodegradation
Degradation
Visible spectrum
Cite
Citations (2)
Methylene blue
Methyl orange
Cite
Citations (25)
Methylene blue
Cite
Citations (27)
Sodium borohydride
Rhodamine B
Methylene blue
Methyl orange
Borohydride
Cite
Citations (36)
Rhodamine B
Methylene blue
Methyl orange
Crystal violet
Cite
Citations (47)
Rhodamine B
Methyl orange
Photodegradation
Congo red
Methylene blue
Degradation
Cite
Citations (15)
Aloe Vera (Aloe barbadensis miller) waste obtained from a local cosmetic production factory was used as bio-adsorbent for the removal of three different dyes: Methylene Blue (MB), Rhodamine B (RB) and Methyl Orange (MO). The material was preliminary washed with water at room temperature. Batch tests at 25°C were performed and the experimental data were fitted using the pseudo-second order kinetic model. It was found out that the rate of adsorption for the tested dyes follows the order MO>MB>RB. Results show that the Aloe Vera waste can be successfully used to remove cationic dyes in aqueous solution. More precisely, 94% removal of MB, 71% removal of RB and a 13% removal of MO was observed in separate tests in which the starting concentration of the correspondent dye was set to 210 mg/L and the bio-adsorbent dosage to 20g/L.
Methylene blue
Aloe Vera
Rhodamine B
Methyl orange
Cationic polymerization
Cite
Citations (0)
Visible spectrum
Methyl orange
Methylene blue
Rhodamine B
Degradation
Cite
Citations (28)
Methylene blue
BET theory
Specific surface area
Visible spectrum
Cite
Citations (44)
Photodegradation
Methyl orange
Methylene blue
Rhodamine B
Visible spectrum
Orange G
Graphitic carbon nitride
Charge carrier
Stoichiometry
Cite
Citations (17)