Activation of persulfate by a novel Fe(II)-immobilized chitosan/alginate composite for bisphenol A degradation

Kang, Yu-Gyeong; Vu, Huong Chi; Le, Thao Thanh; Chang, Yoon Seok

doi:10.1016/j.cej.2018.07.175

Cited by 61 publications

(20 citation statements)

References 58 publications

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“…Environmental Science: Nano Paper Environmental Science: Nano Paper associated with the chain skeleton vibration. 51 Furthermore, the bands near to 1070 cm −1 , usually attributed to the C-O and C-N stretching vibrations, appear sharper in the spectrum of the CuO/PEC, indicating that the C-O and C-N groups are also involved in metal coordination. 50 The peak at 923 cm −1 can be attributed to the P-O-P stretching.…”

Section: Environmental Science: Nano Papermentioning

confidence: 98%

“…50 This point is also supported by the further appearance of new bands in the spectrum of the CuO/PEC at around 1690 cm −1 , which are usually attributed to the CN stretching of amide vibrations. 51 In particular, the vibration at 1637 cm −1 was assigned to the modified amide I stretching of chitosan, ascribed to the strong interactions between the metal oxide and polymer (-NHCOCH 3 ) groups. In the CuO/PEC spectrum, a slight red shift can be observed at 1542 cm −1 , attributed to (COO-) stretching, compared to the 1557 cm −1 position in the PEC spectrum, as well as at 1338 cm −1 versus 1342 cm −1 , Fig.…”

Section: Environmental Science: Nano Papermentioning

confidence: 99%

“…52 Finally, in the CuO/PEC spectrum the new band in the 520 cm −1 range is often attributed to the stretching vibrations of N-CuO and O-CuO. 50,51,53,54 In conclusion, the FTIR data, herein reported, reveal the existence of ion-ion and iondipole interactions and hydrogen bonding between the ions pairs on the amide groups, the negatively charged carboxylic group, the positively charged amino groups, and the hydroxylic groups with atoms on the CuO NP surface. Thus, these results demonstrate the formulation of a CuO/PEC complex formed by polyelectrolyte complexation and therefore the effective incorporation of CuO inside the biopolymer.…”

Section: Environmental Science: Nano Papermentioning

confidence: 99%

See 2 more Smart Citations

Smart nanocomposites of chitosan/alginate nanoparticles loaded with copper oxide as alternative nanofertilizers

Leonardi

Caruso

Carroccio

et al. 2021

Environ. Sci.: Nano

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Section: Environmental Science: Nano Papermentioning

confidence: 98%

Section: Environmental Science: Nano Papermentioning

confidence: 99%

Section: Environmental Science: Nano Papermentioning

confidence: 99%

See 1 more Smart Citation

Smart nanocomposites of chitosan/alginate nanoparticles loaded with copper oxide as alternative nanofertilizers

Leonardi

Caruso

Carroccio

et al. 2021

Environ. Sci.: Nano

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“…2c). These peaks can be attributed to the H-N [43][44][45][46] . Therefore, we believe that the H (in the edge region) and V o of the WHNPs with partially positive charges can form chemical bonds with the aminerelated groups of chitosan due to its chelation effect.…”

Section: Resultsmentioning

confidence: 99%

Multifunctional electrochromic energy storage devices by chemical cross-linking: impact of a WO3·H2O nanoparticle-embedded chitosan thin film on amorphous WO3 films

Koo

Kim

et al. 2020

NPG Asia Mater

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With the advent of multifunctional devices with electrochromic (EC) behavior and electrochemical energy storage, complementary design of film structures using inorganic-organic materials has shown great potential for developing EC energy storage devices. Herein, hybrid films consisting of WO 3 ·H 2 O nanoparticle (WHNP)-embedded chitosan thin films on amorphous WO 3 (a-WO 3 ) films were designed. By exploiting the hybrid effect of chitosan and WHNPs to generate unique chemical cross-linking between them, the designed films exhibited attractive EC behaviors compared to bare a-WO 3 films. These included fast switching speeds (4.0 s for coloration and 0.8 s for bleaching) due to enhanced electrical conductivity and Li-ion diffusivity, high coloration efficiency (62.4 cm 2 /C) as a result of increased electrochemical activity, and superb long-cycling retention (91.5%) after 1000 cycles due to improved electrochemical stability. In addition, hybrid films exhibited a noticeable energy storage performance with a high specific capacitance (154.0 F/g at a current density of 2 A/g) and a stable rate capability as a result of improved electrochemical activity and fast electrical conductivity, respectively. This resulted in brighter illumination intensity for the 1.5-V white-light-emitting diode due to improved energy density compared to a bare a-WO 3 film. Therefore, the results suggest a new design strategy for materials to realize the coincident application of multifunctional devices with EC energy storage performance.

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“…However, these techniques give rise to organic decomposition products that can sometimes be toxic and tedious to characterize. Therefore, alternative techniques to remove BPA are being investigated nowadays, remarkably the use of adsorbents [9,[11][12][13][14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

In Situ Formation of Ionic Liquid by Metathesis Reaction for the Rapid Removal of Bisphenol A from Aqueous Solutions

Vicente-Martínez¹,

Caravaca²,

Soto-Meca³

et al. 2019

Water

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In this work we present a rapid and easy method to remove the totality of bisphenol A from aqueous solutions using ionic liquid (IL). Dispersive liquid–liquid microextraction is employed. The IL 1-octyl-3-methylimidazolium bis((trifluoromethane)sulfonyl)imide ([C8C1im] [NTf2]) is formed in situ because of the mixture of 1-octyl-3-methylimidazolium chloride ([C8C1im]Cl) and lithium bis(trifluoromethanesulfonyl)imide (Li[NTf2]) aqueous solutions. A cloud of microdroplets of IL formed by the dispersion generated through the precursors metathesis reaction allows the rapid and total extraction of bisphenol A (BPA). After centrifugation, the formed IL phase is deposited at the bottom of the flask and the total amount of BPA is extracted in the sedimented phase. The volume of IL is very low, in the order of microliters, which enables us to remove all the BPA from the solution. The technique studied is highly efficient, cost-effective, and presents less environmental impact than other extraction techniques, thus becoming an outstanding alternative to the most commonly used methods. BPA concentration is determined by high performance liquid chromatography by injecting the IL phase directly. An extraction kinetic model for the kinetic profile has been tested for this method, which allows to infer the ideal experimental conditions to execute the extraction method.

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Activation of persulfate by a novel Fe(II)-immobilized chitosan/alginate composite for bisphenol A degradation

Cited by 61 publications

References 58 publications

Smart nanocomposites of chitosan/alginate nanoparticles loaded with copper oxide as alternative nanofertilizers

Smart nanocomposites of chitosan/alginate nanoparticles loaded with copper oxide as alternative nanofertilizers

Multifunctional electrochromic energy storage devices by chemical cross-linking: impact of a WO3·H2O nanoparticle-embedded chitosan thin film on amorphous WO3 films

In Situ Formation of Ionic Liquid by Metathesis Reaction for the Rapid Removal of Bisphenol A from Aqueous Solutions

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