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Preparation and characterization of Mn-S co-doped TiO2 nanocomposite photocatalyst for the photodegradation of phenol and reactive textile dyes.

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Title: Preparation and characterization of Mn-S co-doped TiO2 nanocomposite photocatalyst for the photodegradation of phenol and reactive textile dyes.
Authors: Siddiqa, Asima1 (AUTHOR) a.sam.malik@gmail.com, Haider, Sabtain2 (AUTHOR) hsibtain04@gmail.com, Mushtaq, Marium3 (AUTHOR), Farooq, Saima4 (AUTHOR), Shahida, Shabnam3 (AUTHOR)
Source: Journal of Dispersion Science & Technology. 2026, Vol. 47 Issue 8, p1573-1590. 18p.
Subject Terms: *Photodegradation, *Phenol, *Sol-gel processes, *Photocatalysts, *Materials analysis, *Wastewater treatment, *Textile dyeing
Abstract: Titania-based photocatalytic degradation is extensively used for treating industrial wastewater containing textile dyes and phenol. In this study, manganese (Mn) (x = 1, 3, and 5 wt.%) and sulfur (S) (y = 1 wt.%) co-doped TiO2 (MnxSyT) were synthesized via sol–gel technique and characterized by X-ray diffraction (XRD), UV–visible DRS, PL, Brunauer–Emmett–Teller (BET), Fourier Transform Infrared (FT-IR), and SEM. The XRD showed that co-doping reduced the crystallite size to 13.77 nm while retaining the anatase phase. UV–visible DRS and PL showed that the co-dopant's synergetic effect reduced the TiO2 bandgap to 2.04 eV and improved electron-hole pair separation, enhancing the photodegradation efficiency. The BET showed the co-doping enhanced surface area (53–110 m2g−1) and pore volume (0.34–1.10 cm3g−1). FT-IR confirmed the photocatalysts' purity and stability, while SEM displayed better morphology and bulk superficial properties of the samples. Notably, Mn5S1T possesses low crystallite size and bandgap, high surface area, porosity and purity, better texture, and reusability, and achieving 59%, 86%, and 99% degradation of phenol, Yellow 2 G, and Blue KBR dyes, respectively, under optimized conditions (catalyst dose: 0.2 g/L, pollutant concentration: 20 ppm, pH: 3 (phenol) and 7 (dyes), irradiation time: 120 min) under sunlight. The pseudo-order (zero, first, and second) and BMG kinetics models are used to study the photodegradation of phenol and dyes. The analysis shows that the process follows first-order kinetics, with rate constants of 0.0066, 0.0087, and 0.0167 min−¹ for phenol, Yellow 2 G, and Blue KBR. Mn5S1T photocatalyst offers a cost-effective, efficient, and eco-friendly solution to degrade textile dyes and phenol on an industrial scale. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
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An: 194165985
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  Label: Title
  Group: Ti
  Data: Preparation and characterization of Mn-S co-doped TiO<subscript>2</subscript> nanocomposite photocatalyst for the photodegradation of phenol and reactive textile dyes.
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  Data: <searchLink fieldCode="AR" term="%22Siddiqa%2C+Asima%22">Siddiqa, Asima</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> a.sam.malik@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Haider%2C+Sabtain%22">Haider, Sabtain</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> hsibtain04@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Mushtaq%2C+Marium%22">Mushtaq, Marium</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Farooq%2C+Saima%22">Farooq, Saima</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shahida%2C+Shabnam%22">Shahida, Shabnam</searchLink><relatesTo>3</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Dispersion+Science+%26+Technology%22">Journal of Dispersion Science & Technology</searchLink>. 2026, Vol. 47 Issue 8, p1573-1590. 18p.
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  Data: *<searchLink fieldCode="DE" term="%22Photodegradation%22">Photodegradation</searchLink><br />*<searchLink fieldCode="DE" term="%22Phenol%22">Phenol</searchLink><br />*<searchLink fieldCode="DE" term="%22Sol-gel+processes%22">Sol-gel processes</searchLink><br />*<searchLink fieldCode="DE" term="%22Photocatalysts%22">Photocatalysts</searchLink><br />*<searchLink fieldCode="DE" term="%22Materials+analysis%22">Materials analysis</searchLink><br />*<searchLink fieldCode="DE" term="%22Wastewater+treatment%22">Wastewater treatment</searchLink><br />*<searchLink fieldCode="DE" term="%22Textile+dyeing%22">Textile dyeing</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Titania-based photocatalytic degradation is extensively used for treating industrial wastewater containing textile dyes and phenol. In this study, manganese (Mn) (x = 1, 3, and 5 wt.%) and sulfur (S) (y = 1 wt.%) co-doped TiO2 (MnxSyT) were synthesized via sol–gel technique and characterized by X-ray diffraction (XRD), UV–visible DRS, PL, Brunauer–Emmett–Teller (BET), Fourier Transform Infrared (FT-IR), and SEM. The XRD showed that co-doping reduced the crystallite size to 13.77 nm while retaining the anatase phase. UV–visible DRS and PL showed that the co-dopant's synergetic effect reduced the TiO2 bandgap to 2.04 eV and improved electron-hole pair separation, enhancing the photodegradation efficiency. The BET showed the co-doping enhanced surface area (53–110 m2g−1) and pore volume (0.34–1.10 cm3g−1). FT-IR confirmed the photocatalysts' purity and stability, while SEM displayed better morphology and bulk superficial properties of the samples. Notably, Mn5S1T possesses low crystallite size and bandgap, high surface area, porosity and purity, better texture, and reusability, and achieving 59%, 86%, and 99% degradation of phenol, Yellow 2 G, and Blue KBR dyes, respectively, under optimized conditions (catalyst dose: 0.2 g/L, pollutant concentration: 20 ppm, pH: 3 (phenol) and 7 (dyes), irradiation time: 120 min) under sunlight. The pseudo-order (zero, first, and second) and BMG kinetics models are used to study the photodegradation of phenol and dyes. The analysis shows that the process follows first-order kinetics, with rate constants of 0.0066, 0.0087, and 0.0167 min−¹ for phenol, Yellow 2 G, and Blue KBR. Mn5S1T photocatalyst offers a cost-effective, efficient, and eco-friendly solution to degrade textile dyes and phenol on an industrial scale. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1080/01932691.2024.2448751
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 18
        StartPage: 1573
    Subjects:
      – SubjectFull: Photodegradation
        Type: general
      – SubjectFull: Phenol
        Type: general
      – SubjectFull: Sol-gel processes
        Type: general
      – SubjectFull: Photocatalysts
        Type: general
      – SubjectFull: Materials analysis
        Type: general
      – SubjectFull: Wastewater treatment
        Type: general
      – SubjectFull: Textile dyeing
        Type: general
    Titles:
      – TitleFull: Preparation and characterization of Mn-S co-doped TiO2 nanocomposite photocatalyst for the photodegradation of phenol and reactive textile dyes.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Siddiqa, Asima
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            NameFull: Haider, Sabtain
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            NameFull: Mushtaq, Marium
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            NameFull: Farooq, Saima
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            NameFull: Shahida, Shabnam
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            – D: 01
              M: 07
              Text: 2026
              Type: published
              Y: 2026
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              Value: 01932691
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              Value: 47
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              Value: 8
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            – TitleFull: Journal of Dispersion Science & Technology
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