Synthesis, characterization and application of naïve and nano-sized titanium dioxide as a photocatalyst for degradation of methylene blue

Pandey, Anand Kumar; Kalal, Sangeeta; Ameta, Chetna; Ameta, Rakshit; Kumar, Sudhish; Punjabi, Pinki B.

doi:10.1016/j.jscs.2015.05.013

Cited by 35 publications

(8 citation statements)

References 24 publications

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“…7, shows that at pH 3 (92.32%), the percentage of degradation was the highest compared to pH 7 (85.31%) and pH 9 (80.72%). This nding proved that photocatalytic activity able to occur in acidic condition compared to neutral and basic condition [31]. As we can observe in Fig.…”

Section: Effect Of Phsupporting

confidence: 69%

Optimization of Tungsten Disulfide/Polypyrrole Composite as Photocatalyst in Sunlight-Asissted Photodegradation of Methylene Blue in Aqueous Solution

Baharin

Hashim

Norsham

et al. 2021

Preprint

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The present study highlights the sunlight-assisted photodegradation of methylene blue (MB) using tungsten disulphide/polypyrrole (WS2/PPy) composite as a photocatalyst. WS2/PPy was prepared via oxidative polymerization using ferric chloride (FeCl3) as an oxidant. Fourier Transform Infrared Spectroscopy (FTIR), X-ray diffraction (XRD) and Field Emission Scanning Electron Microscope (FESEM) measurement were used to ensure the physicochemical properties of WS2/PPy. The photocatalytic efficiencies of the photocatalysts were examined by degrading methylene blue (MB) under sunlight irradiation. The results showed that the degradation efficiency of WS2/PPy was higher than the pristine PPy Several optimizations such as effect of the concentration, contact time, photocatalyst dosage and initial concentration were investigated. The results revealed that, under optimum condition of pH 3, 100 mg photocatalyst dosage, 10 ppm MB initial concentration within 180 minutes contact time, were the most effective parameters, that produced 96.15% of sunlight-assisted photodegradation in aqueous solution of MB.

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Section: Effect Of Phsupporting

confidence: 69%

Optimization of Tungsten Disulfide/Polypyrrole Composite as Photocatalyst in Sunlight-Asissted Photodegradation of Methylene Blue in Aqueous Solution

Baharin

Hashim

Norsham

et al. 2021

Preprint

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show abstract

“…This might be clarified on the premise that, on expanding the grouping of color, the response rate increments as more atoms of colors were accessible yet a further increment in focus past 3.00 for CuO impetus cause hindrance of response because of an expansion in the quantity of crashes between color particles though, impacts amongst color and OH radicals diminish. As a result, rate of response is diminished [29]. Figure 4 noticed the absorption of dye was increased when irradiated the solution 15 min.…”

Section: Resultsmentioning

confidence: 93%

Photo Catalytic Degradation of Methylene Blue by Using CuO Nanoparticles

Jassim¹,

Khadhim²,

Al-Amiery³

2016

IJOCAAS

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Photo catalytic degradation of methylene blue has been studied by using different concentration from CuO nanoparticles. The study was carried out with sunlight and in the absence of UV source. As well as the study was the presence of UV source. The Characterization catalysts have performs by UV-Visible spectroscopy. The rate of degradation of dye was monitored spectra photo metrically by measuring absorbance of dye at regular time intervals, change the concentration of dye and change the concentration of catalyst. The results show the best degradation for methylene blue dye was at the irradiation time of 5 hours and in the presence of UV source.

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“…[29][30][31] Nanocrystalline TiO 2 can be used to degrade different dyes under visible light such as MB and MO. [32] For that goal, a UV lamp is generally used to activate the TiO 2 nano catalyst. Similarly, in this investigation, we employed TiO 2 nano catalyst as a catalyst that are embedded within a negatively-charged p(AMPS) hydrogel network for the degradation of positivelycharged toxic organic dye, MB.…”

Section: Photocatalytic Activity Of P(amps)-tio 2 Composite Hydrogel For Dye Degradationmentioning

confidence: 99%

The use of titanium dioxide particles embedded in anionic hydrogel composite for photocatalytic degradation of methylene blue

2021

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Poly(2-acrylamido-2-methyl-1-propane sulfonic acid) (p(AMPS)) anionic hydrogels with 1, 5 and 10 wt% TiO 2 particles were prepared by a simultaneous free radical polymerization and crosslinking reaction. The hydrogel composites were tested as photo-catalysts for the degradation of methylene blue (MB) in water. Since MB dye is positively charged, MB should be readily absorbed by the anionic p(AMPS) hydrogel and then degraded by the entrapped TiO 2 nanoparticle photocatalysts within the p(AMPS) matrix. Photocatalytic degradation of MB was promoted using a UV lamp (300 W) to activate TiO 2 particles and was monitored by UV-Vis spectrometer. Interestingly, the activation energy of 20.58 kJ.mol −1 was found to be one of the lowest reported in the literature.The reusability and regeneration efficiency studies of the composite catalyst showed that the p(AMPS)-TiO 2 composite catalyst possessed 90% activity even after five repetitive use and maintained above 85% activity even after the second regeneration. Using different organic scavengers such as ascorbic acid, dimethylsulfoxide and methanol, it was determined that the main reactive species in the photodegradation of MB dye are electrons and superoxide ions. p(AMPS)-TiO 2 composite hydrogel has potential to be used as a good photocatalyst in degradation of toxic dyes and some organic pollutants.

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Synthesis, characterization and application of naïve and nano-sized titanium dioxide as a photocatalyst for degradation of methylene blue

Cited by 35 publications

References 24 publications

Optimization of Tungsten Disulfide/Polypyrrole Composite as Photocatalyst in Sunlight-Asissted Photodegradation of Methylene Blue in Aqueous Solution

Optimization of Tungsten Disulfide/Polypyrrole Composite as Photocatalyst in Sunlight-Asissted Photodegradation of Methylene Blue in Aqueous Solution

Photo Catalytic Degradation of Methylene Blue by Using CuO Nanoparticles

The use of titanium dioxide particles embedded in anionic hydrogel composite for photocatalytic degradation of methylene blue

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