Green synthesis of reusable multifunctional γ-Fe2O3/bentonite modified by doped TiO2 hollow spherical nanocomposite for removal of BPA

Cao, Yiyun; Zhou, Guangzhu; Zhou, Rui; Wang, Cuizhen; Chi, Baorong; Wang, Yue; Hua, Chunyu; Qiu, Jun; Jin, Yuqin; Wu, Shuqun

doi:10.1016/j.scitotenv.2019.134669

Cited by 52 publications

(16 citation statements)

References 57 publications

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“…The high degradation of OG dye, reaching a maximum removal efficiency of 97.6% (5 mg L −1 ) within a duration of 90 min, can potentially be attributed to the catalyst's large surface area. Furthermore, the investigation of OG degradation data aimed to determine the reaction rate constant using the pseudo-firstorder kinetic equation (Langmuir kinetic model) is as follows (eq 16): (16) where k app is the pseudo-first-order rate constant and C 0 and C t represent the OG concentrations at the initial and concentration after time "t", respectively.…”

Section: Effect Of Initial Concentration Of Og Dye and Photodegradati...mentioning

confidence: 99%

TiO₂-Decorated by Nano-γ-Fe₂O₃ as a Catalyst for Efficient Photocatalytic Degradation of Orange G Dye under Eco-friendly White LED Irradiation

Halfadji,

Chougui,

Djeradi

et al. 2023

ACS Omega

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Azo dyes make up a major class of dyes that have been widely studied for their diverse applications. In this study, we successfully applied nano-γ-Fe 2 O 3 /TiO 2 as a nanocatalyst to improve the photodegradation efficiency of azo dyes (Orange G (OG) dye as a model) from aqueous solution under white lightemitting diode (LED) irradiation. We also investigated the degradation mechanisms and pathways of OG dye as well as the effects of the initial pH value, amount of H 2 O 2 , catalyst dosage, and dye concentration on the degradation processes. The characterizations of nano-γ-Fe 2 O 3 and γ-Fe 2 O 3 Nps/TiO 2 were carried out using various techniques, including X-ray diffractometry, scanning electron microscopy, energy-dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, and UV− visible spectroscopy. The efficiency of the photodegradation reaction of OG was found to follow pseudo-first-order kinetics (Langmuir−Hinshelwood model) with a rate constant of 0.0338 min −1 and an R 2 of 0.9906. Scavenger experiments revealed that hydroxyl radicals and superoxide anion radicals were the dominant species in the OG photocatalytic oxidation mechanism. This work provides a new method for designing highly efficient heterostructure-based photocatalysts (γ-Fe 2 O 3 Nps/TiO 2 ) based on LED light irradiation for environmental applications.

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Section: Effect Of Initial Concentration Of Og Dye and Photodegradati...mentioning

confidence: 99%

TiO₂-Decorated by Nano-γ-Fe₂O₃ as a Catalyst for Efficient Photocatalytic Degradation of Orange G Dye under Eco-friendly White LED Irradiation

Halfadji,

Chougui,

Djeradi

et al. 2023

ACS Omega

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“…HNTs and Bentonite for BPA removal [34][35][36]. Tomul et al studied the efficiency of pillared bentonite for BPA removal by catalytic oxidation and adsorption [6].…”

Section: Researchers Have Reported the Adsorption And Degradation Pro...mentioning

confidence: 99%

“…Tomul et al studied the efficiency of pillared bentonite for BPA removal by catalytic oxidation and adsorption [6]. The results of the abovementioned studies [6,[34][35][36] revealed that functionalized nanoclays shown tremendous effect for the removal of organic phenolic compounds (BPA) from wastewater. PILC has opened new opportunities for MMMs fabrication and BPA removal by NF.…”

Section: Researchers Have Reported the Adsorption And Degradation Pro...mentioning

confidence: 99%

Embedding low–cost 1D and 2D iron pillared nanoclay to enhance the stability of polyethersulfone membranes for the removal of bisphenol A from water

Elakkiya

Arthanareeswaran

Das

2021

Separation and Purification Technology

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“…The Langmuir isotherm exhibited a better fit with a maximum adsorption capacity of 77.36 mg/g. At pH 7, the reaction rate constant (k) of the BPA photocatalytic degradation by-product is 0.00104 min -1 , and the adsorption equilibrium constant (K) is 0.04034 L/mg [28].…”

Section: Bpa Removal By Composite Materialsmentioning

confidence: 99%

Sorption of bisphenol A from aqueous solutions using natural adsorbents: isotherm, kinetic and effect of temperature

2021

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Emerging organic micropollutants, such as bisphenol A (BPA), have raised concerns about their negative impact on human health and ecological safety. This review article aims to demonstrate and highlight recent advances in adsorption applications for bisphenol A, a toxic environmental pollutant commonly found in wastewater. There are many reasons to use non-toxic materials and eco-friendly technologies to remove this pollutant from sewage. [1] Several adsorbents previously used have shown significant efficiency and performance for the removal of BPAs, and current research is directed towards the development of low-cost treatment processes using materials such as clays and Chitosan. The properties of the adsorbent can be adjusted by changing their surface for an optimized performance. In addition, the efficiency of the adsorption process depends on various parameters such as solution pH, the pollutant concentration, contact time, temperature, nature and dose of the adsorbent, which are also discussed. In addition, we critically review the isothermal, kinetic and thermodynamic approaches. [2]

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Green synthesis of reusable multifunctional γ-Fe2O3/bentonite modified by doped TiO2 hollow spherical nanocomposite for removal of BPA

Cited by 52 publications

References 57 publications

TiO₂-Decorated by Nano-γ-Fe₂O₃ as a Catalyst for Efficient Photocatalytic Degradation of Orange G Dye under Eco-friendly White LED Irradiation

TiO₂-Decorated by Nano-γ-Fe₂O₃ as a Catalyst for Efficient Photocatalytic Degradation of Orange G Dye under Eco-friendly White LED Irradiation

Embedding low–cost 1D and 2D iron pillared nanoclay to enhance the stability of polyethersulfone membranes for the removal of bisphenol A from water

Sorption of bisphenol A from aqueous solutions using natural adsorbents: isotherm, kinetic and effect of temperature

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Green synthesis of reusable multifunctional γ-Fe2O3/bentonite modified by doped TiO2 hollow spherical nanocomposite for removal of BPA

Cited by 52 publications

References 57 publications

TiO2-Decorated by Nano-γ-Fe2O3 as a Catalyst for Efficient Photocatalytic Degradation of Orange G Dye under Eco-friendly White LED Irradiation

TiO2-Decorated by Nano-γ-Fe2O3 as a Catalyst for Efficient Photocatalytic Degradation of Orange G Dye under Eco-friendly White LED Irradiation

Embedding low–cost 1D and 2D iron pillared nanoclay to enhance the stability of polyethersulfone membranes for the removal of bisphenol A from water

Sorption of bisphenol A from aqueous solutions using natural adsorbents: isotherm, kinetic and effect of temperature

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TiO₂-Decorated by Nano-γ-Fe₂O₃ as a Catalyst for Efficient Photocatalytic Degradation of Orange G Dye under Eco-friendly White LED Irradiation

TiO₂-Decorated by Nano-γ-Fe₂O₃ as a Catalyst for Efficient Photocatalytic Degradation of Orange G Dye under Eco-friendly White LED Irradiation