Development of zerovalent iron and titania (Fe0/TiO2) composite for oxidative degradation of dichlorophene in aqueous solution: synergistic role of peroxymonosulfate (HSO5−)

Bibi, Noorina; Sayed, Murtaza; Shah, Noor S.; Rehman, Fahad; Akhtar, Naeem; Mahmood, Tahira; Hussain, Sajjad; Iqbal, Jibran; Gul, Ikhtiar; Gul, Saman; Bushra, Maleeha

doi:10.1007/s11356-022-20174-5

Cited by 15 publications

(3 citation statements)

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Section: Resultsmentioning

confidence: 99%

“…While looking at Figure b, it is clear that the variation in the reaction temperatures during the synthesis of S-BFO has induced a change in the PL intensity, without changing the emission peak position. However, a strong quenching of the PL intensity for the sillenite BFO compound synthesized at 160 °C reaction temperature is clearly observed, suggesting the lowest recombination rate of the photogenerated charge carriers for S-BFO(160) and hence may greatly influence its photocatalytic properties …”

Section: Resultsmentioning

confidence: 99%

“…However, a strong quenching of the PL intensity for the sillenite BFO compound synthesized at 160 °C reaction temperature is clearly observed, suggesting the lowest recombination rate of the photogenerated charge carriers for S-BFO(160) and hence may greatly influence its photocatalytic properties. 45 Photocatalytic Performance. The photocatalytic performance of the prepared samples was initially evaluated through the degradation of RhB dye under solar illumination, and the results are presented in Figure 7a,b.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Simple Low Temperature Technique to Synthesize Sillenite Bismuth Ferrite with Promising Photocatalytic Performance

Sharmin

Basith

2022

ACS Omega

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Sillenite-type members of the bismuth ferrite family have demonstrated outstanding potential as novel photocatalysts in environmental remediation such as organic pollutant degradation. This investigation has developed a low temperature one-step hydrothermal technique to fabricate sillenite bismuth ferrite Bi 25 FeO 40 (S-BFO) via co-substitution of 10% Gd and 10% Cr in Bi and Fe sites of BiFeO 3 , respectively, by tuning hydrothermal reaction temperatures. Rietveld refined X-ray diffraction patterns of the as-synthesized powder materials revealed the formation of S-BFO at a reaction temperature of 120–160 °C. A further increase in the reaction temperature destroyed the desired sillenite structure. With the increase in the reaction temperature from 120 to 160 °C, the morphology of S-BFO gradually changed from irregular shape to spherical powder nanomaterials. The high-resolution TEM imaging demonstrated the polycrystalline nature of the S-BFO(160) nanopowders synthesized at 160 °C. The as-synthesized samples exhibited considerably high absorbance in the visible region of the solar spectrum, with the lowest band gap of 1.76 eV for the sample S-BFO(160). Interestingly, S-BFO(160) exhibited the highest photocatalytic performance under solar irradiation, toward the degradation of rhodamine B and methylene blue dyes owing to homogeneous phase distribution, regular powder-like morphology, lowest band gap, and quenching of electron–hole pair recombination. The photodegradation of a colorless organic pollutant (ciprofloxacin) was also examined to ensure that the degradation is photocatalytic and not dye-sensitized. In summary, Gd and Cr co-doping have proven to be a compelling energy-saving and low-cost approach for the formulation of sillenite-phase bismuth ferrite with promising photocatalytic activity.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

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