Photodecomposition of several chloroaromatics using a commercial prototype reactor

Xu, Yi; Menassa, Pierre; Langford, Cooper H.

doi:10.1016/0045-6535(88)90008-2

Cited by 24 publications

(13 citation statements)

References 12 publications

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“…The fine TiO 2 powder, or crystals, can be dispersed in the water, in order to be clarified by irradiation; however, they must be removed by filtering after reaction, which is troublesome and costly. Thus, in order to solve this problem, many researchers have examined methods of fixing TiO 2 on other supporting materials, including glass beads [20][21][22], fiberglass [23][24][25], silica [26,27], an electrode [28], and zeolite [29,30]. Recently, some researchers have used zeolite as hosts to fix semiconductors, due to its unique, uniform pores and channel size.…”

Section: Introductionmentioning

confidence: 99%

Zeolite Y from rice husk ash encapsulated with Ag-TiO2: characterization and applications for photocatalytic degradation catalysts

Mohamed

Mkhalid

Salam

et al. 2013

Desalination and Water Treatment

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A B S T R A C TA high level of efficiency in the photocatalytic reactions was achieved by increasing the surface area of the photocatalyst by supporting fine TiO 2 particles on porous materials. Among various supports, zeolites seem to be an attractive candidate. Ti-incorporated Y zeolite was prepared by an ion-exchange method, while Ag was immobilized on the encapsulated titanium via impregnation method. The produced samples were characterized using X-ray diffraction, ultraviolet and visible spectroscopy, photoluminescence emission spectra, scanning electron microscopy, and surface area measurement. Furthermore, the catalytic performances of Ti-Ag/NaY tests were carried out for degradation of cyanide using visible light. The results reveal a good distribution of Ag on the zeolite. Ag doping can eliminate the recombination of electron-hole pairs in the catalyst. These results demonstrate that the optimum weight% of Ag to Ti-NaY is 0.3%; this weight% facilitates high performance by the photocatalyst, degrading 99% of cyanide in a 100 mg/L solution in 60 min.

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Section: Introductionmentioning

confidence: 99%

Zeolite Y from rice husk ash encapsulated with Ag-TiO2: characterization and applications for photocatalytic degradation catalysts

Mohamed

Mkhalid

Salam

et al. 2013

Desalination and Water Treatment

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show abstract

“…Furthermore, several commercial photocatalytic reactor systems have been developed for aqueous and gas-phase wa~te treatment (Xu et al, 1988;Al-Ekabi et al, 1991;Suzuki, 1993 ). However, the photocatalytic process has been criticized as being uneconomical compared to other oxidative treatment systems due to its low photochemical conversion efficiencies that may result in higher overall energy costs (Renner, 1996;Wilson, 1996).…”

Section: Introductionmentioning

confidence: 99%

Solar-Powered Photocatalytic Fiber-Optic Cable Reactor for Waste Stream Remediation

Peill

Hoffmann

1997

Journal of Solar Energy Engineering

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“…The photocatalytic decomposition of organic compounds especially from aqueous media has attracted a great deal of attention [7,[18][19][20][21][22][23][24]. The supporting semiconductor catalysts particularly titania catalyst on silica [25,26], zeolites [27][28][29], fibre glass [30,31], electrode [32] and cenospheres [33] have also been studied to enhance the photocatalytic activity. However, catalyst recovery due to the leaching of active species remains a challenge even of supported photocatalysts.…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

Degradation and mineralization of aqueous nitrobenzene using ETS-4 photocatalysis

Surolia

Jasra

2016

Desalination and Water Treatment

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A B S T R A C TThe microporous Engelhard titanosilicate ETS-4 is synthesized with the photocatalytic active -Ti-O-Ti-quantum wires in its framework. The transition metal cations are ion exchanged from their metal salt solutions to give M-ETS-4 (M = Fe, Co, Ni, Cu and Ag). The synthesized materials are extensively characterized by XRD, FT-IR, TGA, SEM and UV-vis-DRS. The photocatalytic activity of these synthesized samples is investigated for the degradation and mineralization of aqueous solution of nitrobenzene as a model pollutant compound. Decrease in chemical oxygen demand (COD) and absorbance of photodegraded NB revealed mineralization of NB. The photocatalytic activity of ETS-4 is attributed to the active -Ti-O-Ti-wires in its framework. Transition metal ions present in ETS-4 enhance the photocatalytic activity by the separating photogenerated charge carriers in ETS-4. Ag ions are found to show pronounced improvement in the photocatalytic activity compared to other transition metal ions. COD study reveals~59% mineralization in 240 min of irradiation with Ag-ETS-4.

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Photodecomposition of several chloroaromatics using a commercial prototype reactor

Cited by 24 publications

References 12 publications

Zeolite Y from rice husk ash encapsulated with Ag-TiO2: characterization and applications for photocatalytic degradation catalysts

Zeolite Y from rice husk ash encapsulated with Ag-TiO2: characterization and applications for photocatalytic degradation catalysts

Solar-Powered Photocatalytic Fiber-Optic Cable Reactor for Waste Stream Remediation

Degradation and mineralization of aqueous nitrobenzene using ETS-4 photocatalysis

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