A novel sulfonated waste polystyrene / iron oxide nanoparticles composite: Green synthesis, characterization and applications

León-Condés, Cristina A. De; Roa‐Morales, Gabriela; Martínez-Barrera, Gonzalo; Balderas‐Hernández, Patricia; Menchaca‐Campos, Carmina; Ureña-Núñez, Fernando

doi:10.1016/j.jece.2018.102841

Cited by 29 publications

(11 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The presence of channels increase the superficial area, which promote the adsorption process (Tai et al., 2016). The surface morphology after irradiation is very different to that for non-irradiated and sulfonated WEPS, reported in a previous work by the authors, where a smooth and homogeneous surface with some voids was obtained (De León-Condés et al., 2019). Thus, gamma irradiation produces modifications on the surface of the composite, mainly those due to the scission of the polymer chains.…”

Section: Resultscontrasting

confidence: 86%

“…6b), with an average diameter size of 31.5 nm, and a standard deviation, σ = 0.30. Such diameters are higher than those for non-irradiated and sulfonated WEPS, reported in a previous work by the authors, namely 25.5 nm, with σ = 0.44 (De León-Condés et al., 2019). Thus, gamma irradiation generates agglomeration of NPs and growth of crystalline grains.…”

Section: Resultscontrasting

confidence: 64%

“…The iWEPS samples were sulfonated following the optimized method reported by De-León et al. (2019) (De León-Condés et al., 2019). This consist in mixing 7.5g of irradiated waste expanded polystyrene with 100 mL of H 2 SO 4 (96%), and to kept it under agitation for 30 min at 95 °C (Fig.…”

Section: Methodsmentioning

confidence: 99%

“…While the iWEPS was analyzed by Fourier transform infrared spectroscopy (FT-IR) in a spectrophotometer, equipped with an accessory for measuring of Attenuated Total Reflectance (ATR). After the sulfonation process, the degree of sulfonation of the irradiated and sulfonated polystyrene (iS-WEPS) was calculated, according to (De León-Condés et al., 2019; Zaidi, 2003).…”

Section: Methodsmentioning

confidence: 99%

See 3 more Smart Citations

Sulfonated and gamma-irradiated waste expanded polystyrene with iron oxide nanoparticles, for removal of indigo carmine dye in textile wastewater

León-Condés

Roa‐Morales

Martínez-Barrera

et al. 2019

Heliyon

Self Cite

View full text Add to dashboard Cite

In this work, waste expanded polystyrene (WEPS) was irradiated with gamma rays, ranging doses from 100 kGy to 1,000 kGy. After irradiation, the WEPS had decrease on its glass transition temperature (Tg), as consequence of the scissions of its polymer chains. Then, the irradiated WEPS was sulfonated, and its degree of sulfonation (DS) was measured. The highest DS value, 46.6%, was obtained for an irradiation dose of 200 kGy. The sulfonated and irradiated polystyrene (denominated as iS-WEPS), was used as a support of iron oxide nanoparticles. Such composite system was denominated (FeO-NPs + iS-WEPS). The results show nanoparticle sizes of 31.5 nm containing 21.97% iron oxide. The composites followed a pseudo-second order model, with a maximum adsorption capacity of 20 mg/g, and an equilibrium time of 30 min, according to the Langmuir model. Moreover, the optimal conditions followed by the Fenton process were: pH = 3.2, H 2 O 2 concentration = 0.32 mM/L, composite concentration (FeO-NPs + iS-WEPS) = 2 g/L, and a reaction time 20 min. Finally, 99% removal of indigo carmine dye was achieved, and a reduction of 83% of COD in textile wastewater.

show abstract

Section: Resultscontrasting

confidence: 86%

Section: Resultscontrasting

confidence: 64%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Sulfonated and gamma-irradiated waste expanded polystyrene with iron oxide nanoparticles, for removal of indigo carmine dye in textile wastewater

León-Condés

Roa‐Morales

Martínez-Barrera

et al. 2019

Heliyon

Self Cite

View full text Add to dashboard Cite

show abstract

“…The IEC of SPS48* was compared to those of other researches in Table 5. Leon‐condes et al, 36 Fukuhara et al, 37 and Peng et al 38 carried out the sulfonation process under hard operating conditions (higher temperature and more H 2 SO 4 /polystyrene ratio) and obtained much lower IEC compared to this work. This can be attributed to the novel and optimized sulfonation method that was conducted in this work as was summarized below:…”

Section: Resultsmentioning

confidence: 63%

Performance of the sulfonated poly ether ether ketone proton exchange membrane modified with sulfonated polystyrene and phosphotungstic acid for microbial fuel cell applications

Samaei

Bakeri

Lashkenari

2020

J of Applied Polymer Sci

View full text Add to dashboard Cite

In this research, the preparation of low cost proton exchange membranes (PEMs) based on sulfonated poly ether ether ketone (SPEEK) for application in the microbial fuel cells (MFCs) is studied. Sulfonated polystyrene (SPS) and phosphotungstic acid (PWA) were employed to improve the performance of PEM through the creation of more proton pathways. At first, the sulfonation of PEEK and polystyrene were performed through two modified methods to obtain uniform and high degree of sulfonation (DS) of the polymers and then, the PEMs were prepared through the solution casting method. Accordingly, the formation of uniform skin layer was confirmed by the SEM micrographs. Blending the aforementioned additives to the SPEEK polymer solution significantly enhanced the proton conductivity, water uptake and durability of the modified membranes. The proton conductivities of SPEEK/SPS and SPEEK/PWA membranes at additive/SPEEK weight ratio of 0.15 were 45.3% and 26.2% higher than that of the commercial Nafion117 membrane, respectively. Moreover, the degradation times for the abovementioned modified membranes were 140 and 350 min which indicated satisfactory oxidation stability. Besides, the aforementioned membranes exhibited two times more water uptake compared to the neat SPEEK membrane. Finally, SPEEK/SPS and SPEEK/PWA membranes produced 68% and 36% higher maximum power in the MFC, compared to the commercial Nafion117 membrane. Therefore, the fabricated PEMs are potentially suitable alternatives to be used in the fuel cell applications.

show abstract

A Novel Self‐protection Hydroquinone Electrochemical Sensor Based on Thermo‐sensitive Triblock Polymer PS‐PNIPAm‐PS

Zhao

Chen

et al. 2020

Electroanalysis

View full text Add to dashboard Cite

A novel self‐protection sensor was successfully constructed based on an interesting thermo‐sensitive triblock polymer PS‐PNIPAm‐PS. At low temperatures (<24 °C), the analyte was able to undergo the redox process at the modified electrode. However, the polymer shrunk and accumulated at high temperatures (>30 °C), which dramatically increased the electron transfer resistance (Rct) of the modified electrode and consequently blocked the occurrence of the redox reaction to protect the electrode from high temperatures and enhance its stability. Under optimized conditions, the proposed sensor showed a good detection range for hydroquinone (6×10−7 to 2.35×10−3 M) and a low LOD (490 nM). The sensor was also successfully applied for detecting hydroquinone in real samples. The present work may provide a novel method for electrode protection, high‐temperature alarm, high‐temperature protection of batteries and new sensors production.

show abstract

A novel sulfonated waste polystyrene / iron oxide nanoparticles composite: Green synthesis, characterization and applications

Cited by 29 publications

References 32 publications

Sulfonated and gamma-irradiated waste expanded polystyrene with iron oxide nanoparticles, for removal of indigo carmine dye in textile wastewater

Sulfonated and gamma-irradiated waste expanded polystyrene with iron oxide nanoparticles, for removal of indigo carmine dye in textile wastewater

Performance of the sulfonated poly ether ether ketone proton exchange membrane modified with sulfonated polystyrene and phosphotungstic acid for microbial fuel cell applications

A Novel Self‐protection Hydroquinone Electrochemical Sensor Based on Thermo‐sensitive Triblock Polymer PS‐PNIPAm‐PS

Contact Info

Product

Resources

About