Synthesis and Characterization of Titanium Dioxide Hollow Nanofiber for Photocatalytic Degradation of Methylene Blue Dye

Jafri, Nurul Natasha Mohammad; Jaafar, Juhana; Alias, Nur Hashimah; Samitsu, Sadaki; Aziz, Farhana; Salleh, Wan Norharyati Wan; Yusop, Mohd Zamri Mohd; Rahman, Mukhlis A.; Ismail, Ahmad Fauzi; Matsuura, Takeshi; Isloor, Arun M.

doi:10.3390/membranes11080581

Cited by 23 publications

(7 citation statements)

References 36 publications

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“…The photocatalytic activity of TiO 2 NPs was enhanced by the spherical morphology and small crystallite size. The TiO 2 hollow nanofiber showed higher photocatalytic efficiency at 0.75 g/L and moderate at 1.0 g/L, as reported by Jafri et al [45]. In this degradation process, the nanoparticle had higher active sites at the optimum weight of the catalyst, and there was a gradual decrease in active sites of the nanoparticle as the weight of the catalyst exceeded the optimum weight.…”

Section: Photocatalytic Degradation Of the Dye Solution Effect Of Catalyst Weightsupporting

confidence: 72%

Investigation of TiO2 Nanoparticles Synthesized by Sol-Gel Method for Effectual Photodegradation, Oxidation and Reduction Reaction

et al. 2021

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Metal oxide titanium dioxide (TiO2) nanoparticles were synthesized by using a simple and economical sol-gel method. The prepared nanoparticles were used to evaluate methylene blue dye degradation and as catalysts in the oxidation of benzaldehyde. The crystallite size of the titanium dioxide nanoparticle was 18.3 nm, which was confirmed by X-ray diffraction analysis. The spherical morphology was confirmed by scanning electron microscopy (SEM), and the elemental composition of the nanoparticle was found by energy dispersive X-ray (EDAX) analysis. The anatase form of the nanoparticle was confirmed by the bandgap 3.2 eV, which was measured using UV–DRS analysis. The bond between metal and oxygen was confirmed by the peaks at 485 and 606 cm–1 analyzed by Fourier transform infrared analysis (FTIR). The efficiency of the catalyst in dye degradation was 60.08, 68.38, and 80.89% with respect to 50, 75, and 100 mg catalyst weight. The yield % of benzoic acid was 94%, and the reduction efficiency against 4-nitrophenol was 98.44%.

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Section: Photocatalytic Degradation Of the Dye Solution Effect Of Catalyst Weightsupporting

confidence: 72%

Investigation of TiO2 Nanoparticles Synthesized by Sol-Gel Method for Effectual Photodegradation, Oxidation and Reduction Reaction

et al. 2021

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“…After calcination, there was a red shift of the absorption edge towards visible light. The increased absorption was most likely due to the presence of rutile phase, which has an intrinsically smaller band gap energy compared with the pure anatase phase [ 62 , 63 ]. Moreover, the intensity of these bands decreased with increasing concentration of modifier due to the delay of the anatase-to-rutile phase transformation.…”

Section: Resultsmentioning

confidence: 99%

Artificial Solar Light-Driven APTES/TiO2 Photocatalysts for Methylene Blue Removal from Water

et al. 2022

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A visible-light photocatalytic performance of 3-aminopropyltriethoxysilane (APTES)-modified TiO2 nanomaterials obtained by solvothermal modification under elevated pressure, followed by calcination in an argon atmosphere at 800–1000 °C, is presented for the first time. The presence of silicon and carbon in the APTES/TiO2 photocatalysts contributed to the effective delay of the anatase-to-rutile phase transformation and the growth of the crystallites size of both polymorphous forms of TiO2 during heating. Thus, the calcined APTES-modified TiO2 exhibited higher pore volume and specific surface area compared with the reference materials. The change of TiO2 surface charge from positive to negative after the heat treatment increased the adsorption of the methylene blue compound. Consequently, due to the blocking of active sites on the TiO2 surface, the adsorption process negatively affected the photocatalytic properties. All calcined photocatalysts obtained after modification via APTES showed a higher dye decomposition degree than the reference samples. For all 3 modifier concentrations tested, the best photoactivity was noted for nanomaterials calcined at 900 °C due to a higher specific surface area than materials calcined at 1000 °C, and a larger number of active sites available on the TiO2 surface compared with samples annealed at 800 °C. It was found that the optimum concentration for TiO2 modification, at which the highest dye decomposition degree was noted, was 500 mM.

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“…The size of each particle was 234(+/-) 34 nm. After 300 minutes, the rate of degradation was 42.90% [28]. TiO2 was annealed at 600 o C and tested for the degradation of MO dye.…”

Section: Photocatalytic Activity Of Tio2 Npsmentioning

confidence: 99%

A Mini Review of Photocatalytic Effects of Nano TiO_2 and an Analysis of Their Effectiveness

MD. Golam Sazid,

Asraf Ibna Helal,

Islam

et al. 2023

Proceedings of International Exchange and Innovation Conference on Engineering &Amp; Sciences (IEICES)

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Nanomaterials can improve performance and can be developed in innovative ways, which will impact multiple sectors. Nano TiO2 is different in behavior from its larger counterparts as the properties rely on size of the materials. TiO2 nanoparticles (NPs) have a big benefit over other substances because they are small and have a high ratio of surface area to volume. They are great for photocatalysis and can break down a wide range of dyes. As they can act as photocatalysts, TiO2 NPs are becoming more and more important in environmental uses. Several researchers have used TiO2 to degrade various dyes. The ability of TiO2 NPs as photocatalysts depends on several factors, such as their crystalline form, particle size etc. Our systematic review will reveal that the factors that have impact on dye degradation efficiency of TiO2 where the dyes methylene blue (MB), methyl orange (MO), rhodamine B (RB) are in concern.

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Synthesis and Characterization of Titanium Dioxide Hollow Nanofiber for Photocatalytic Degradation of Methylene Blue Dye

Cited by 23 publications

References 36 publications

Investigation of TiO2 Nanoparticles Synthesized by Sol-Gel Method for Effectual Photodegradation, Oxidation and Reduction Reaction

Investigation of TiO2 Nanoparticles Synthesized by Sol-Gel Method for Effectual Photodegradation, Oxidation and Reduction Reaction

Artificial Solar Light-Driven APTES/TiO2 Photocatalysts for Methylene Blue Removal from Water

A Mini Review of Photocatalytic Effects of Nano TiO_2 and an Analysis of Their Effectiveness

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