UV–VIS photocatalytic degradation of nitrobenzene from water using heavy metal doped titania

Niţoi, Ines; Oancea, Petruţa; Răileanu, Mina; Crışan, Maria; Constantin, Lucian Alexandru; Cristea, Ionut

doi:10.1016/j.jiec.2014.03.036

Cited by 68 publications

(38 citation statements)

References 30 publications

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“…TiO 2 is a well known semiconductor that has also been widely used as photocatalyst. In this study, to investigate the photo-degradation behavior of a prepared TiO 2 and Co:TiO 2 nanocomposites towards photo-degradation of acetic acid 30,31 .…”

Section: Photo-degradation Studiesmentioning

confidence: 99%

Photocatalytic Activity of Co:TiO2 Nanocomposites and their Application in Photodegradation of Acetic Acid

2017

Chem Sci Trans

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Nanocomposites of Co:TiO 2 were prepared by wet chemical methods. The prepared samples were characterized by XRD, SEM, BET, FTIR and UV-Visible spectra. The XRD analysis confirmed the presence of rutile and anatase both phases were present. It is found that rutile phase was more dominant. Applying the Scherrer's calculations through which particle size was found 35 and 80 nm in case of Co:TiO 2 and pure TiO 2 respectively. SEM image of Co:TiO 2 and TiO 2 were observed and both found in nanodiamension. The photocatalytic degradation of acetic acid was done at different condition of concentration, amount of photocatalyst and type of catalyst. The effective photodegradation of acetic acid were found at low concentration and photodegradation increases with decrease the concentration of acetic acid. The prominent degradation of acetic acid was found in the presence of nanocomposites Co:TiO 2 as compared with TiO 2 .

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Section: Photo-degradation Studiesmentioning

confidence: 99%

Photocatalytic Activity of Co:TiO2 Nanocomposites and their Application in Photodegradation of Acetic Acid

2017

Chem Sci Trans

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“…Dillert [9] compared several related compounds and observed that reactivity via photo-oxidation increased in the order of 2, 4, 6-trinitrotoluene < dintrobenzenes < dinitrotoluenes < nitrobenzene. Several studies of photocatalytic oxidation of nitrobenzene using TiO 2 -based catalysts have been published [6,[8][9][10][11][12][13][14][15] but there are fewer publications addressing 1, 3-dintrobenzene (DNB) photocatalysis [9,16,17]. In this work, oxidation of DNB was studied as a surrogate for a common explosive, trinitrotoluene (TNT).…”

Section: Introductionmentioning

confidence: 99%

The Effects of Photocatalyst and Solution Co-Contaminants on Photocatalytic Oxidation of 1,3- Dinitrobenzene in Aqueous Semiconductor Oxide Suspensions

Skaf

Grannas²,

Colotti³

et al. 2015

J Chem Eng Process Technol

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Heterogeneous photocatalysis of 1,3-dinitrobenzene (DNB) using simulated solar irradiation in the presence of semiconductor oxides was studied. Comparison of TiO 2 and ZnO showed that the former was a more efficient photocatalyst for the degradation of DNB. The addition of potential environmental co-contaminants such as acetic acid, fulvic acid and seawater salts to the DNB solutions all inhibited the DNB degradation rate. The addition of hydroxyl radical-generating compounds, including H 2 O 2 and NaNO 3 , to the DNB solutions both slightly reduced the DNB degradation rate, indicating that hydroxyl radical generation is not a rate limiting step in the overall reaction process. The use of 5 volume % acetone cosolvent slowed the degradation rate, however for 15 volume % acetone despite the slower relative rate of destruction, the higher concentrations of DNB provided higher mass destruction rates.

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“…Ethylenediaminetetraacetic acid (EDTA; C 10 H 16 N 2 O 8 , CAS #60-00-4) has been widely used as a decontaminating agent in radiochemical and nuclear power plants. The addition of EDTA into the radioactive liquid waste can give the complexation of some of the precipitant cations, which results in the interference in their removal by the conventional treatment process such as chemical precipitation and ion exchange [1]- [9].…”

Section: Introductionmentioning

confidence: 99%

“…Since EDTA is stable, has low biodegradability, is rarely degradable by chlorine, is hardly retained by activated carbon fibers and is resistant to ozone treatment, it is a crucial step to perform a pretreatment step for the removal of EDTA for a better treatment of the liquid waste [1]- [9].…”

Section: Introductionmentioning

confidence: 99%

“…For instance, the liquid waste containing bisphenol [10], phthalate [11] and agricultural chemicals (thiram [12]) has been treated with the photocatalytic degradation techniques. Recently, Nitoi et al [9] have investigated the photocatalytic degradation of nitrobenzene in the aqueous solution with un-doped TiO 2 and Fe, Co and Ni-doped TiO 2 powders. In the studies, Fe-doped TiO 2 was very effective for the photocatalytic degradation of nitrobenzene.…”

Section: Introductionmentioning

confidence: 99%

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Optimization of Conditions for the Photocatalytic Degradation of EDTA in Aqueous Solution with Fe-Doped Titanium Dioxide

Sugiyama¹,

Dabwan²,

Katsumata³

et al. 2014

OJINM

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The conditions for photocatalytic degradation of ethylenediaminetetraacetic acid (EDTA) in aqueous solution with Fe-doped titanium dioxide (TiO2) were optimized. The degradation efficiencies with Fe-doped TiO2 were better, compared with those obtained with bare TiO2 and Pt-doped TiO2. The effect of various experimental factors, such as photocatalytic dosage, temperature, solution pH and light intensity on the photocatalytic degradation of EDTA by Fe-doped TiO2 was investigated. The photocatalytic degradation treatment for the wastewater containing EDTA is simple, easy handling and low cost.

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UV–VIS photocatalytic degradation of nitrobenzene from water using heavy metal doped titania

Cited by 68 publications

References 30 publications

Photocatalytic Activity of Co:TiO2 Nanocomposites and their Application in Photodegradation of Acetic Acid

Photocatalytic Activity of Co:TiO2 Nanocomposites and their Application in Photodegradation of Acetic Acid

The Effects of Photocatalyst and Solution Co-Contaminants on Photocatalytic Oxidation of 1,3- Dinitrobenzene in Aqueous Semiconductor Oxide Suspensions

Optimization of Conditions for the Photocatalytic Degradation of EDTA in Aqueous Solution with Fe-Doped Titanium Dioxide

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