Copper modified exchanger for the photodegradation of methyl orange dye

El-Moselhy, Medhat Mohamed; Mahmoud, Nesrine M.R.; Emara, Mostafa M.

doi:10.1080/19443994.2013.823625

Cited by 3 publications

(3 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is obvious that all reactions follow first-order kinetics and the apparent rate constants calculated from the slopes of the straight lines indicate that the rate of degradation is directly proportional to the initial concentration of MG. Similar behavior has been reported for other photocatalysts [12].…”

Section: Degradation Kineticssupporting

confidence: 89%

“…The mixture was washed with distilled water several times. A portion of 0.5 g zinc nitrate solution was added to the washed mixture, dried at 105°C for 4 h [10][11][12]. This preparation has been given the name Si-HZnO-I.…”

Section: Synthesis Of Si-hznomentioning

confidence: 99%

“…Adsorption measurement was determined by batch experiments by mixing 0.15 g of Si-HZnO-II with 100 mL solution of methyl green of 6,12,18,24,36,45 and 70 mg L -1 concentrations followed by mechanical stirring using a shaker incubator at 200 rpm. No pH adjustment was done in any of the cases.…”

Section: Adsorption Studiesmentioning

confidence: 99%

See 2 more Smart Citations

Remediation of methyl green dye from aqueous solution via adsorption and degradation using silica gel modified with hydrated zinc oxide catalyst

Mahmoud¹,

El-Moselhy²,

Alkhaldi³

2019

Desalination and Water Treatment

Self Cite

View full text Add to dashboard Cite

a b s t r a c tThe modification of silica via incorporation of hydrated zinc oxide (HZnO) with different loadings was achieved using wet precipitation technique. After drying at room temperature, the obtained samples calcined at 105°C and characterized using X-ray powder diffractometer, scanning electron microscopy, electron diffraction X-ray, transmission electron microscopy, Fourier transform infrared spectroscopy and BET. The data of characterizations indicated the well-distributed HZnO particles inside the silicate matrix with average particle size were lower than the detection limit of some characterization instruments. Furthermore, the modification with HZnO led to a noticeable decrease in BET surface area and the energy band gap due to the occupation of ZnO for interstitial positions inside the silicate matrix. The modified samples were successfully utilized in the adsorption and photocatalytic degradation of Methyl green dye as one of the cationic hazardous organic pollutants. The adsorption capacity of the sorbent catalyst was found to be 24.91 mg g -1 , while complete degradation of the (2 × 10 -4 mol L -1 ) dye was fulfilled in no more than 16 min. The influence of different experimental parameters as pH, temperature, concentration of the dye and dose of the catalyst was examined. The results obtained indicate that both adsorption and degradation of MG were a pH, dose and temperature dependent. The easiness of regeneration of the exhausted catalyst and its successive reuse confirmed remarkable economic efficiency.

show abstract

Section: Degradation Kineticssupporting

confidence: 89%

Section: Synthesis Of Si-hznomentioning

confidence: 99%