Enhancing photodegradation of 2,4,6 trichlorophenol and organic pollutants in industrial effluents using nanocomposite of TiO2 doped with reduced graphene oxide

Ali, Mahmoud Fadl; Al-Qahtani, Khairia M.; El-Sayed, Siliem M.

doi:10.1016/j.ejar.2019.08.003

Cited by 32 publications

(10 citation statements)

References 39 publications

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“…At an initial concentration of 200 mg L –1 and a pH of 9, the degradation efficiency dropped to 52.50 percent. Such related to the possibility of monophenol molecules interacting with • OH declines; therefore, excessive oxidant radicals involving • OH and • O 2 have been needed for improving the oxidation procedure and a lower efficiency of degradation is identified . In the photocatalytic process, pH is the core parameter that influences the charging characteristics of the surface of the catalyst, followed by the effects of the sorption activity that influences the photocatalytic degradation. , As seen in Figure A, as the pH value increased, there is a clear increase in phenol photodegradation.…”

Section: Resultsmentioning

confidence: 99%

Ternary Photodegradable Nanocomposite (BiOBr/ZnO/WO₃) for the Degradation of Phenol Pollutants: Optimization and Experimental Design

Ali

Motawea

2021

ACS Omega

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The degradation of environmental contaminants with photocatalysts has bright prospects for application in the control of pollution. In this study, BiOBr/ZnO/WO 3 heterojunctions have been documented to be reliable visible-light photocatalysts for phenol deterioration. X-ray diffraction, X-ray photoelectron spectroscopy, Fourier-transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, photoluminescence spectral analysis, electrochemical impedance spectroscopy (EIS), EIS Bode plots, linear sweep voltammetry, and UV–visible diffuse reflectance spectroscopy were employed to describe the heterojunction’s structure in addition to its optical features. The results revealed that the BiOBr/ZnO/WO 3 ternary photocatalyst displayed more degradation activity in comparison to single-phase ZnO, WO 3 , or BiOBr, which is also higher than that of binary mixture photocatalysts with a phenol degradation efficiency of 90%. The influence of degradation variables, for instance, the potential of hydrogen (pH) and the initial organic contaminant content besides the heterojunction dose, on the deterioration efficiency was optimized using the response surface methodology. The degradation efficiency reached 95% under the optimal conditions of 0.08 g/0.03 L catalyst dose, a pH of 9, and an initial organic contaminant content of 10 mg L –1 . However, the optimal phenol degradation efficiency of 39.37 mg g –1 was achieved under the conditions of 0.08 g/0.03 L catalyst dose, pH of 9, and 200 mg L –1 initial phenol concentration.

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Section: Resultsmentioning

confidence: 99%

Ternary Photodegradable Nanocomposite (BiOBr/ZnO/WO₃) for the Degradation of Phenol Pollutants: Optimization and Experimental Design

Ali

Motawea

2021

ACS Omega

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“…Many nanomaterials have been proven to exhibit catalase-like activity, such as Prussian blue (PB), Co 3 O 4 , CeO 2 , MOFs and some hybrid nanozymes. 6–78 Catalase-like nanozymes combine with H 2 O 2 , where some reactions firstly produce O 2 , and then the H 2 O is generated, while others do the opposite depending on their properties. 79 According to the study by Ghibelli's group, the possible catalytic mechanism of CeO 2 catalase-like nanozymes was illustrated as follows.…”

Section: Classification and Catalytic Processes Of Nanozymesmentioning

confidence: 99%

Recent advances in the applications of nanozymes for the efficient detection/removal of organic pollutants: a review

Liu

Zhu

Zhong

et al. 2022

Environ. Sci.: Nano

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“…2,4,6-TCP needs to be degraded since it causes carcinogenic effects and is dangerously toxic for life even at low concentrations. According to International Agency for Research on Cancer (IARC), it is categorized as carcinogenic 2B Group (Ali et al, 2019). This waste comes from pharmaceutical, petrochemical, textile, and pesticide waste.…”

Section: Introductionmentioning

confidence: 99%

“…This waste comes from pharmaceutical, petrochemical, textile, and pesticide waste. Some studies have been performed to photodegrade 2,4,6-TCP using TiO2/graphene (Ali et al, 2019), MgO-MgFe2O4 (Ramirez et al, 2019), CdS (Khodadadeh et al, 2016), TiO2-Carbon (Lavand et al,2015), and g-C3H4 (Ji et al, 2013). In addition, biological degradation, coagulation, adsorption, and AOP method were also performed to eliminate 2,4,6-TCP (Ali et al, 2019;Khorshandi et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…Some studies have been performed to photodegrade 2,4,6-TCP using TiO2/graphene (Ali et al, 2019), MgO-MgFe2O4 (Ramirez et al, 2019), CdS (Khodadadeh et al, 2016), TiO2-Carbon (Lavand et al,2015), and g-C3H4 (Ji et al, 2013). In addition, biological degradation, coagulation, adsorption, and AOP method were also performed to eliminate 2,4,6-TCP (Ali et al, 2019;Khorshandi et al, 2018). However, 2,4,6-TCP can present an attractive renewable material that can be degraded and converted to H2 simultaneously.…”

Section: Introductionmentioning

confidence: 99%

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Enhancing Hydrogen Generation using CdS-modified TiO2 Nanotube Arrays in 2,4,6-Trichlorophenol as a Hole Scavenger

Ratnawati

Slamet

Toya

et al. 2022

Int. J. Renew. Energy Dev.

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Nowadays, the lack of renewable energy such as hydrogen, and other environmental issues are problems that must be resolved. 2,4,6-Trichlorophenol (2,4,6-TCP) is classified as a recalcitrant pollutant due to its carcinogenic properties, high toxicity, and dangers to the environment therefore it needs to be eliminated. Hydrogen production using organic pollutant (2,4,6-TCP solution) as a hole scavenger on CdS-TiO2 nanotube arrays photocatalyst (TNTA-CdS) has been investigated at various CdS loading on TNTA and the initial concentration of 2,4,6-TCP. The TNTA sample was prepared by anodization and followed by an electrodeposition method to decorate CdS on TNTA. The H2 which was generated by reduction H+ and the 2,4,6-TCP removal was performed simultaneously by photocatalysis with TNTA-CdS as photocatalyst. The mole ratio of CdCl2:CH3CSNH2 as precursors of CdS deposited on TNTA (CdS loading) were 0.1:0.06, 0.2:0.12, and 0.4:0.24 and the initial concentration of 2,4,6-TCP were 10, 20 and 40 ppm. Meanwhile, the photocatalytic performance of the variations in CdS loading on TNTA and initial concentration of 2,4,6-TCP toward hydrogen generation was investigated in a photoreactor for 240 minutes under visible light irradiation with a mercury lamp as a photon source. The CdS decorating on TNTA was confirmed by SEM, EDX, and X-ray diffraction (XRD) characterization. According to the UV-Vis and XRD analysis, the TNTA-CdS samples have bandgap energies in the range of 2.71 - 2.89 eV and comprise a 100% anatase phase. Based on the photocatalysis results, the optimum composition of CdS loading is 0.2:0.16 (TNTA-CdS-2) which produced the highest total hydrogen (2.155 mmol/g) compared to the other compositions and produced 1.5 times higher compared to TNTA at 40 ppm of 2,4,6-TCP.

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Enhancing photodegradation of 2,4,6 trichlorophenol and organic pollutants in industrial effluents using nanocomposite of TiO2 doped with reduced graphene oxide

Cited by 32 publications

References 39 publications

Ternary Photodegradable Nanocomposite (BiOBr/ZnO/WO₃) for the Degradation of Phenol Pollutants: Optimization and Experimental Design

Ternary Photodegradable Nanocomposite (BiOBr/ZnO/WO₃) for the Degradation of Phenol Pollutants: Optimization and Experimental Design

Recent advances in the applications of nanozymes for the efficient detection/removal of organic pollutants: a review

Enhancing Hydrogen Generation using CdS-modified TiO2 Nanotube Arrays in 2,4,6-Trichlorophenol as a Hole Scavenger

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Enhancing photodegradation of 2,4,6 trichlorophenol and organic pollutants in industrial effluents using nanocomposite of TiO2 doped with reduced graphene oxide

Cited by 32 publications

References 39 publications

Ternary Photodegradable Nanocomposite (BiOBr/ZnO/WO3) for the Degradation of Phenol Pollutants: Optimization and Experimental Design

Ternary Photodegradable Nanocomposite (BiOBr/ZnO/WO3) for the Degradation of Phenol Pollutants: Optimization and Experimental Design

Recent advances in the applications of nanozymes for the efficient detection/removal of organic pollutants: a review

Enhancing Hydrogen Generation using CdS-modified TiO2 Nanotube Arrays in 2,4,6-Trichlorophenol as a Hole Scavenger

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Product

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Ternary Photodegradable Nanocomposite (BiOBr/ZnO/WO₃) for the Degradation of Phenol Pollutants: Optimization and Experimental Design

Ternary Photodegradable Nanocomposite (BiOBr/ZnO/WO₃) for the Degradation of Phenol Pollutants: Optimization and Experimental Design