Investigation of photocatalytic effect of ZnO–SnO2/nano clinoptilolite system in the photodegradation of aqueous mixture of 4-methylbenzoic acid/2-chloro-5-nitrobenzoic acid

Khodami, Zahra; Nezamzadeh‐Ejhieh, Alireza

doi:10.1016/j.molcata.2015.08.013

Cited by 117 publications

(29 citation statements)

References 44 publications

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“…The E g of the prepared SnO 2 is 3.73 eV and it is consistent well with the reported value. 41,[50][51][52][53] This result clearly indicates that the absorption of SnO 2 could be extended to the visible light region by doping with Sn 2+ . 11,41 As Sn 2+ tends to be oxidized to Sn 4+ at an elevated temperature, the increase of E g with hydrothermal temperature should be caused by the reduction of Sn 2+ doping content.…”

Section: Resultsmentioning

confidence: 73%

Controlled synthesis of Sn-based oxides via a hydrothermal method and their visible light photocatalytic performances

Wang

Meng

et al. 2017

RSC Adv.

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Section: Resultsmentioning

confidence: 73%

Controlled synthesis of Sn-based oxides via a hydrothermal method and their visible light photocatalytic performances

Wang

Meng

et al. 2017

RSC Adv.

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“…The results of SnO 2 -containing clinoptilolite for photocatalytic usage are still scarce. However, coupling ZnO-SnO 2 particles onto clinoptilolite nanoparticles was investigated in the photocatalytic degradation of an aqueous mixture of 4-methylbenzoic acid and 2-chloro-5-nitrobenzoic acid under UV irradiation [15], as well as metronidazole photodegradation irradiated by moderate pressure Hg-lamp [16]. The latter was also studied by the coupling of SnO 2 and NiO and supporting them onto clinoptilolite nanoparticles [17].…”

Section: Introductionmentioning

confidence: 99%

SnO2-Containing Clinoptilolite as a Composite Photocatalyst for Dyes Removal from Wastewater under Solar Light

et al. 2020

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Due to their adsorbent, ion exchange and catalytic properties zeolites are suitable for a variety of applications. We report on the photocatalytic activity of a readily available and inexpensive natural zeolite clinoptilolite (Z) containing SnO2 (Sn-Z). The Sn-Z samples with 3–15 wt. % of Sn were prepared by using a precipitation–deposition method. Powder X-ray diffraction analysis showed that the zeolite structure was unaffected by the introduction of the Sn-phase. Diffuse reflectance UV/VIS spectra of the Sn-Z samples confirmed the presence of SnO2 and X-Ray absorption spectroscopy analyses suggested that the SnO2 particles mainly resided on the surface of the clinoptilolite, while ATR-FTIR analysis gave some clues that part of the SnO2 phase was incorporated in the pores of the zeolite. The presence of SnO2 in Sn-Z increased both adsorption capacity and photocatalytic performance which could be partially explained by higher surface area and partially with an increased negative potential of the surface. Adsorption and total degradation of methylene blue (MB) for the Sn-Z with the highest amount of Sn (15 wt.%) was about 30% and 45%, respectively, suggesting a synergetic effect between SnO2 and the clinoptilolite lattice. Reusability tests showed that these catalysts present a promising material for water purification.

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“…Titanium oxide (TiO2) has been used extensively as a photocatalyst in photocatalytic process due to a great potential as a sustainable treatment technology to destruct the contaminants in wastewater [16][17][18]. However, many researches have been conducted to explore simple, cost-effective and eco-friendly alternatives to replace TiO2 for various industrial purposes such as zinc oxide (ZnO) [19][20][21], cadmium sulphide (CdS) [22,23], cerium oxide (CeO2) [24,25], and others.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of La-Doped CaO Derived from Cockle Shells for Photodegradation of POME

Ghazali

Kem

Abdullah

et al. 2019

Bull. Chem. React. Eng. Catal.

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Photocatalysis has merged to be one of the most promising technology in wastewater remediation. However, the application of photocatalysis in treating palm oil mill effluent (POME) is still limited. Many researches were conducted to explore simple and cost-effective alternatives to replace TiO2 for various industrial purposes. Therefore, the aim of this study is to synthesize and characterize lanthanum doped calcium oxide (La/CaO) as photocatalyst as well as to evaluate the performance of these photocatalysts in the degradation of POME. The photocatalyst used in this study was converted from cockle shells to transform into calcium oxide (CaO) through calcination process. The CaO produced was doped with 1 wt%, 3 wt%, and 5 wt% of lanthanum (La) using wet impregnation method to enhance its photocatalytic activity. The photocatalysts were characterised using X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Brunauer-Emmett-Teller (BET), Scanning Electron Microscopy (SEM), Energy-Dispersion X-ray (EDX), and Inductively Coupled Plasma Mass Spectrometry (ICPMS). Then, this photocatalyst was performed on POME under UVC in a batch system by using different La/CaO at optimum catalyst dosage of 3.0 g/L. Through this research, it was found that the POME degradation through photocatalytic reaction was increased with the incorporation of La where 3 wt% La/CaO showed the highest POME degradation compared to others. This is due to the larger BET surface area that provides more active sites resulted from the incorporation of La. The findings of this study imply that the contaminants in POME can be reduced by utilizing CaO derived from cockle shells. , respectively [1]. Freely discharged of POME can bring severe impacts to the environment and increase the likelihood of affecting the aquatic life and decreasing the water quality because it contains high level of pollutants such as suspended solid, residual oil and grease, chemical oxygen demand (COD), and biochemical oxygen demand (BOD). At presence, numerous conventional methods have been used in treating POME such as anaerobic digestion [2][3][4][5], membrane technology [6][7][8], and adsorp-

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Investigation of photocatalytic effect of ZnO–SnO2/nano clinoptilolite system in the photodegradation of aqueous mixture of 4-methylbenzoic acid/2-chloro-5-nitrobenzoic acid

Cited by 117 publications

References 44 publications

Controlled synthesis of Sn-based oxides via a hydrothermal method and their visible light photocatalytic performances

Controlled synthesis of Sn-based oxides via a hydrothermal method and their visible light photocatalytic performances

SnO2-Containing Clinoptilolite as a Composite Photocatalyst for Dyes Removal from Wastewater under Solar Light

Evaluation of La-Doped CaO Derived from Cockle Shells for Photodegradation of POME

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