Adsorption of estrone with few-layered boron nitride nanosheets: Kinetics, thermodynamics and mechanism

Liu, Guo-Hong; Zhang, Zhaohan; Chen, Yan; Wang, Yang; Ma, Xuerui; Gao, Peng; Feng, Yujie

doi:10.1016/j.chemosphere.2018.05.129

Cited by 25 publications

(8 citation statements)

References 48 publications

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“…The adsorption kinetics of the estrogens by the PCP fitted the pseudo-second-order kinetic model ( R 2 > 0.98892), indicating that the adsorption process was controlled by both estrogen concentration and adsorption sites on the PCP (Figure S5A). Similar results have been reported for the retention of E1, E2, and E3 onto N -propyl-modified mesoporous silica, few-layered BN nanosheets, and raw lotus seedpod biochar …”

Section: Resultssupporting

confidence: 87%

Photocatalytic Cellulose-Paper: Deepening in the Sustainable and Synergic Combination of Sorption and Photodegradation

et al. 2021

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Clean water is one of the sustainable development goals set by the United Nations for 2030. The development of effective but worldwide affordable strategies is essential to guarantee this achievement. Photocatalysis technology fulfills these criteria whenever the photocatalyst is sustainable and nontoxic. In this article, a cellulose-paper modified with a polyamide-titanium dioxide (TiO 2 ) nanocomposite by dip-coating is evaluated to degrade estrogens efficiently under solar light. The study deepens on the synergic combination of the sorptive capacity of the polyamide and the activity of TiO 2 . The photocatalytic performance was studied under artificial and sunlight in a miniaturized experimental setup (batch of six reactors). Also, the effects of the dispersed/immobilized catalyst, irradiation time, and adsorption evaluation were studied under kinetic conditions. The photocatalyst composition, considering the polyamide (nylon-6) and TiO 2 amounts and the dipping cycles, was studied by a response surface methodology, and the reusability of the photocatalytic cellulose-paper was investigated. The LED source provided removal efficiencies of 65, 62, and 52% (for estrone, 17β-estradiol, and estriol, respectively) after 420 min of light exposure. Under sunlight, the efficiency increased up to 99.5% for estrone and 17β-estradiol and 98.5% for estriol after 180 min of irradiation. The sustainable character of the cellulosic substrate, the low toxicity of the nanocomposite ingredients, and its performance under sunlight make the material attractive for in-field application.

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Section: Resultssupporting

confidence: 87%

Photocatalytic Cellulose-Paper: Deepening in the Sustainable and Synergic Combination of Sorption and Photodegradation

et al. 2021

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“…In addition, the E1 adsorption by few-layered boron nitride nanosheets 103 and E1 and E3 adsorption onto a mesoporous molecularly imprinted polymer 91 presented thermodynamic characteristics in parallel to that of. 100 The authors 91,100,102,103 reported that in physisorption, where the adsorption is caused because of the electrostatic interactions, the DG°is around −20 kJ mol −1 , while in chemisorption, the DG °ranges from −84 to −40 kJ mol −1 and adsorption occurs because of e − transfer, e − exchange or e − sharing. 100,102 further accentuated that owing to the hydrophobic prole of SE, during the sorption operation, there is an imbalance between the surface of the adsorbent and its internal forces, fostering the operation to molecular adsorption by the van der Walls force among many other interactions reported in Table 1.…”

Section: Adsorption Technique For the Removal Of Ses In Watermentioning

confidence: 98%

Sequestration of steroidal estrogen in aqueous samples using an adsorption mechanism: a systemic scientometric review

et al. 2023

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“…Liu et al optimized the synthesis of BN nanosheets using boric acid and urea as starting materials to obtain few-layered BN with a high surface area of about 900 m 2 g −1 and a pore volume of about 0.76 cm 3 g −1 [63]. Few-layer BN nanosheets were used to study their adsorption capability for estrone.…”

Section: Pure 2d Nanomaterialsmentioning

confidence: 99%

Two-Dimensional Nanomaterials for the Removal of Pharmaceuticals from Wastewater: A Critical Review

2021

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The removal of pharmaceuticals from wastewater is critical due to their considerable risk on ecosystems and human health. Additionally, they are resistant to conventional chemical and biological remediation methods. Two-dimensional nanomaterials are a promising approach to face this challenge due to their combination of high surface areas, high electrical conductivities, and partially optical transparency. This review discusses the state-of-the-art concerning their use as adsorbents, oxidation catalysts or photocatalysts, and electrochemical catalysts for water treatment purposes. The bibliographic search bases upon academic databases including articles published until August 2021. Regarding adsorption, high removal capacities (>200 mg g−1) and short equilibrium times (<30 min) are reported for molybdenum disulfide, metal-organic frameworks, MXenes, and graphene oxide/magnetite nanocomposites, attributed to a strong adsorbate-adsorbent chemical interaction. Concerning photocatalysis, MXenes and carbon nitride heterostructures show enhanced charge carriers separation, favoring the generation of reactive oxygen species to degrade most pharmaceuticals. Peroxymonosulfate activation via pure or photo-assisted catalytic oxidation is promising to completely degrade many compounds in less than 30 min. Future work should be focused on the exploration of greener synthesis methods, regeneration, and recycling at the end-of-life of two-dimensional materials towards their successful large-scale production and application.

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Adsorption of estrone with few-layered boron nitride nanosheets: Kinetics, thermodynamics and mechanism

Cited by 25 publications

References 48 publications

Photocatalytic Cellulose-Paper: Deepening in the Sustainable and Synergic Combination of Sorption and Photodegradation

Photocatalytic Cellulose-Paper: Deepening in the Sustainable and Synergic Combination of Sorption and Photodegradation

Sequestration of steroidal estrogen in aqueous samples using an adsorption mechanism: a systemic scientometric review

Two-Dimensional Nanomaterials for the Removal of Pharmaceuticals from Wastewater: A Critical Review

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