Outstanding fluoride removal from aqueous solution by a La-based adsorbent

Yang, Weisen; Shi, Fengshuo; Jiang, Wenlong; Chen, Yuhuang; Zhang, Kaiyin; Jian, Shaoju; Jiang, Shaohua; Zhang, Chunmei; Hu, Jiapeng

doi:10.1039/d2ra06284d

Cited by 15 publications

(9 citation statements)

References 58 publications

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“…36 Rodney et al synthesized La-doped CuO prepared via solution combustion approach for observing the efficient photocatalytic evaluation of MB dye which was 98%. 37 However, fluorides removal activity have also been evaluated in some recent studies 31,38,39 In the present study, La-doped CuO nanostructures were fabricated first time via a simple, easy-to-handle, and inexpensive hydrothermal route. The fabricated final product was characterized by different techniques, and doping influence on optical, structural, and morphological properties was studied.…”

Section: Introductionmentioning

confidence: 98%

“…Lanthanum, an abundant rare earth element with silvery white physical appearance, 30 as an incorporating material. La is being used as a catalyst as well as its ability to improve the catalytic performance of other materials when used as an additive 31 . There are some other metal oxides that have been reported with La doping in recent studies.…”

Section: Introductionmentioning

confidence: 99%

“…Rodney et al synthesized La‐doped CuO prepared via solution combustion approach for observing the efficient photocatalytic evaluation of MB dye which was 98% 37 . However, fluorides removal activity have also been evaluated in some recent studies 31,38,39 …”

Section: Introductionmentioning

confidence: 99%

“…La is being used as a catalyst as well as its ability to improve the catalytic performance of other materials when used as an additive. 31 There are some other metal oxides that have been reported with La doping in recent studies. Jian et al claimed the synthesis of La-doped ZnO nanofibers for exceptional photocatalytic activity under visible light irradiation.…”

Section: Introductionmentioning

confidence: 99%

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Visible light‐active pure and lanthanum‐doped copper oxide nanostructures for photocatalytic degradation of methylene blue dye and hydrogen production

Rafique¹,

Khalid

Irshad

et al. 2023

Energy Science & Engineering

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Clean water and renewable energy sources are becoming increasingly important in the current era, as well as a future challenge, and one of the potential solutions is photocatalysis. In the current study, a simple one‐step hydrothermal technique is employed to fabricate the pure and La‐doped CuO (0%, 1%, 3%, 5%, and 7%) photocatalysts. The influence of varying La concentration on structure, morphology, and optical properties is determined by scanning electron microscope (SEM), X‐ray diffraction (XRD), ultraviolet (UV)–visible spectroscopy, and photoluminescence. SEM showed that synthesized nanostructures are irregularly spherical and transform into needle‐like nanostructures on increasing La concentration. XRD revealed the monoclinic phase with a crystallite size of 15–23 nm. The UV–visible spectrum exhibited a decrease in the band gap of La‐doped CuO needle‐like nanostructures from UV to visible light. The composition and purity of synthesized nanostructures are evaluated via the energy‐dispersive X‐ray spectrum which revealed that needle‐like nanostructures are pure without any impurity traces. The synthesized nanostructures were used as a photocatalyst against methylene blue dye to examine their photocatalytic activity. The synthesized CuO‐3La photocatalyst exhibited excellent photocatalytic performance of dye degradation and hydrogen production 95.3 μmol h−1 g−1 with more than 97% cyclic stability. Therefore, the synthesized La‐doped CuO nanostructures are potential candidates for photocatalytic water splitting and hydrogen evolution.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Visible light‐active pure and lanthanum‐doped copper oxide nanostructures for photocatalytic degradation of methylene blue dye and hydrogen production

Rafique¹,

Khalid

Irshad

et al. 2023

Energy Science & Engineering

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“…Therefore, researchers have focused on developing adequate wastewater treatment methods [ 5 , 6 ]. To date, numerous physical and chemical methods, such as advanced oxidation [ 7 ], adsorption [ 8 , 9 , 10 , 11 , 12 , 13 ], coagulation-flocculation [ 14 ], and photocatalysis [ 15 ], have been used for organic dye remediation. Of these, adsorption has been one of the most cost-effective methods owing to its simplicity and low energy consumption [ 16 , 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

In Situ Electrospun Porous MIL-88A/PAN Nanofibrous Membranes for Efficient Removal of Organic Dyes

Jia

et al. 2023

Molecules

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In recent years, metal–organic framework (MOF)-based nanofibrous membranes (NFMs) have received extensive attention in the application of water treatment. Hence, it is of great significance to realize a simple and efficient preparation strategy of MOF-based porous NFMs. Herein, we developed a direct in situ formation of MOF/polymer NFMs using an electrospinning method. The porous MOF/polymer NFMs were constructed by interconnecting mesopores in electrospun composite nanofibers using poly(vinylpolypyrrolidone) (PVP) as the sacrificial pore-forming agent. MOF (MIL-88A) particles were formed inside the polyacrylonitrile (PAN)/PVP nanofibers in situ during electrospinning, and the porous MIL-88A/PAN (pMIL-88A/PAN) NFM was obtained after removing PVP by ethanol and water washing. The MOF particles were uniformly distributed throughout the pMIL-88A/PAN NFM, showing a good porous micro-nano morphological structure of the NFM with a surface area of 143.21 m2 g−1, which is conducive to its efficient application in dye adsorption and removal. Specifically, the dye removal efficiencies of the pMIL-88A/PAN NFM for amaranth red, rhodamine B, and acid blue were as high as 99.2, 94.4, and 99.8%, respectively. In addition, the NFM still showed over 80% dye removal efficiencies after five adsorption cycles. The pMIL-88A/PAN NFM also presented high adsorption capacities, fast adsorption kinetics, and high cycling stabilities during the processes of dye adsorption and removal. Overall, this work demonstrates that the in situ electrospun porous MOF/polymer NFMs present promising application potential in water treatment for organic dyestuff removal.

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Environmental and Health Effects of Fluoride Contamination and Treatment of Wastewater Using Various Technologies

Kumar,

Chava,

Gupta

et al. 2023

Water Science and Technology Library

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Outstanding fluoride removal from aqueous solution by a La-based adsorbent

Abstract: A La-based adsorbent was prepared with La(NO3)3·6H2O, 2-methylimidazole and DMF via amide-hydrolysis and used for fluoride decontamination from aqueous water.

Cited by 15 publications

References 58 publications

Visible light‐active pure and lanthanum‐doped copper oxide nanostructures for photocatalytic degradation of methylene blue dye and hydrogen production

Visible light‐active pure and lanthanum‐doped copper oxide nanostructures for photocatalytic degradation of methylene blue dye and hydrogen production

In Situ Electrospun Porous MIL-88A/PAN Nanofibrous Membranes for Efficient Removal of Organic Dyes

Environmental and Health Effects of Fluoride Contamination and Treatment of Wastewater Using Various Technologies

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