Preparation of polyaniline-modified local clay and study of its sorption capacity

Benhebal, Hadj; Chaib, Messaoud; Léonard, Angélique; Crine, Michel; Lambert, Stéphanie

doi:10.1007/s40097-014-0098-x

Cited by 7 publications

(3 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to the figure 5 given in supplementary material, an absence of adsorption of SMT onto ZnO immobilized on glass plate was observed, this results could be attributed to the absence of electronic attraction between SMT and the catalyst. Indeed, the SMT presents a neutral form for pH values in the range 2.5 to 7.5 and the point of zero charge (pH pzc ) of ZnO is 8.6 [39,40]. The photolysis of SMT was studied for an initial SMT concentration of 50 mg/L in the absence of ZnO for 60 min.…”

Section: Adsorption and Photolysis Testsmentioning

confidence: 99%

Sulfamethazine degradation by heterogeneous photocatalysis with ZnO immobilized on a glass plate using the heat attachment method and its impact on the biodegradability

Aissani

Yahiaoui

Boudrahem

et al. 2020

Reac Kinet Mech Cat

View full text Add to dashboard Cite

In this paper, the degradation of sulfamethazine (SMT) was performed using of photocatalytic process in the presence of ZnO catalyst immobilized on glass plate (on ZnO/glass plate) under UV light. The ZnO/glass plate was characterized by X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectra; the results of the characterization demonstrated that the properties of ZnO/glass plate were maintained unmodified. The adsorption and the photolysis tests revealed the absence of adsorption of SMT onto ZnO/glass plate and the absence of direct photolysis of SMT. The effect of the initial solution pH, the flow rate and the initial concentration of SMT on the photocatalytic process was studied and optimized by using central composite design (CCD). The model equation obtained led to a classification of these parameters based on their level of significance. The results suggested that the most influential factor was the initial concentration of SMT (x 2 ), which had the strongest effect on the response (-11.6) and the negative sign of the coefficient suggested that the degradation of SMT decreased for increasing initial SMT concentration. It was followed by the flow rate with positive effect on the yield of SMT degradation (+2.06). The model also demonstrated the absence of pH effect in the studied interval and that the strongest interaction was between the pH and the flow rate. The kinetic of degradation of the SMT can be described by a pseudo A c c e p t e d M a n u s c r i p t 2first order kinetic model for 10 and 50 mg/L of SMT; while the kinetic of degradation was described by a pseudo-second-order kinetic model for the highest initial amount, [SMT] 0 =100 mg/L. The optimal values of the solution pH, the flow rate and the initial concentration of SMT were 6, 0.56 L/min and 11 mg/L respectively. Under these conditions the removal efficiency of SMT was 96 % and the BOD 5 /COD ratio increased from 0 to 0.20 after 5h of irradiation time.

show abstract

Section: Adsorption and Photolysis Testsmentioning

confidence: 99%

Sulfamethazine degradation by heterogeneous photocatalysis with ZnO immobilized on a glass plate using the heat attachment method and its impact on the biodegradability

Aissani

Yahiaoui

Boudrahem

et al. 2020

Reac Kinet Mech Cat

View full text Add to dashboard Cite

show abstract

“…The investigated dye (Gentian violet) is extensively used in the textile, paper, and many industries. Gentian violet is hazardous compound and suspected to be toxic and carcinogenic for humans and animals [17,18]. The efficiency of the GV photocatalytic degradation reaction was studied under different experimental conditions, the influence of several experimental parameters, such as the adsorption of dye onto ZnO surface, the initial dye concentration, the initial pH, the addition of HCO − 3 ion and the addition of hydrogen peroxide, upon the GV degradation rate constant was also investigated.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of ZnO Nanostructures Using Sublimation-Condensation and Sol-Gel Methods: Evaluation of the Photocatalytic Degradation Activity of Industrial Dye

2019

View full text Add to dashboard Cite

ZnO nanostructures were prepared by sublimation-condensation (ZnO-SPVD) technique and sol-gel method (ZnO-SG). The produced materials were used in a photocatalytic degradation of a pollutant (gentian violet) at different operational conditions. The materials were characterized by X-ray diffraction (XRD) and Raman spectra techniques (RS). The obtained results indicated that the photocatalytic activity was correlated to the particle sizes of catalysts. The catalyst prepared by the physical method (ZnO-SPVD) exhibited a higher photoactivity to degrade GV dye than the catalyst prepared by the chemical method (ZnO-SG). In the presence of each of ZnO-SPVD or ZnO-SG, the experiments were carried out to investigate the factors that influence the photocatalytic degradation of GV, such as the adsorption amount, pH of dye solution, electron acceptors (H2O2), and presence of inorganic species commonly present in real wastewaters (HCO − 3). The experimental results showed that adsorption on the surface of both samples was an important parameter controlling the photocatalytic activity. For both catalysts, the degradation rate in alkaline medium was higher than that in natural and acidic one. The presence of the H2O2 and HCO − 3 ions increased the effectiveness of the photodegradation.

show abstract

“…Many factors have a great effect on the properties of the nanocomposite such as kaolinite particle size, dopant type and concentration, the temperature of polymerization, aniline to oxidant molar ratio, uniformity of dispersion, and the structural bond between polymer and kaolinite . Kaolinite, PANI, and their nanocomposites can be used in supercapacitors , biosensors , dye and heavy metal adsorption , conductive fillers , optoelectronics, electromagnetic interference devices and corrosion protection .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of kaolinite/polyaniline nanocomposites and investigating their anticorrosive performance in chlorinated rubber/alkyd coatings

et al. 2018

View full text Add to dashboard Cite

Kaolinite/polyaniline nanocomposites (KPAns) were prepared by in situ chemical oxidative polymerization. The nanocomposites were synthesized with four different aniline to kaolinite weight percentage; 5, 10, 15, and 20% to produce KPAn5, KPAn10, KPAn15, and KPAn20, respectively. The structural, morphological and thermal properties of the nanocomposites were characterized using Fourier transform infrared, X‐ray diffraction, scanning electron microscope (SEM)–energy dispersive X‐ray analyzer, transmission electron microscope, and Thermogravimetric analysis. The results revealed a very slight increase in the d‐spacing of kaolinite XRD peaks. SEM images showed hexagonal platy sheets of kaolinite crystals that are indistinguishable in KPAn nanocomposites images, especially on using a high amount of polyaniline (PANI). The increase in the percentage of carbon and nitrogen elements in EDAX data proved the adsorption of PANI on the surface of kaolinite platelets. To investigate the anticorrosive performance of the synthesized nanocomposites, kaolinite and KPAn nanocomposites were loaded in various amounts (1, 5, and 9%) in a blend of chlorinated rubber/medium oil alkyd resin (CR/MA) to prepare different formulations that were applied and evaluated as protective coats on steel substrates. Visual corrosion test revealed that 5% KPAn‐loaded CR/MA coats exhibited the best protection against corrosion amongst other formulations as indicated by their lowest degree of rusting and blistering. Potentiodynamic polarization measurements confirmed the highest protection of 5% KPAn10‐loaded CR/MA coat as indicated by the quantitative corrosion rates obtained from Tafel extrapolation. POLYM. COMPOS., 40:2777–2789, 2019. © 2018 Society of Plastics Engineers

show abstract

Preparation of polyaniline-modified local clay and study of its sorption capacity

Cited by 7 publications

References 14 publications

Sulfamethazine degradation by heterogeneous photocatalysis with ZnO immobilized on a glass plate using the heat attachment method and its impact on the biodegradability

Sulfamethazine degradation by heterogeneous photocatalysis with ZnO immobilized on a glass plate using the heat attachment method and its impact on the biodegradability

Synthesis of ZnO Nanostructures Using Sublimation-Condensation and Sol-Gel Methods: Evaluation of the Photocatalytic Degradation Activity of Industrial Dye

Synthesis and characterization of kaolinite/polyaniline nanocomposites and investigating their anticorrosive performance in chlorinated rubber/alkyd coatings

Contact Info

Product

Resources

About