Synthesis and Investigation of TiO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> Performance for Photocatalytic Degradation of Bromophenol Blue and Eriochrome Black T: Experimental Design Optimization and Reactive Oxygen Species Contribution
Graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) based photocatalyst was synthesized and the photocatalytic performance was investigated for the removal of Eriochrome Black T (EBT) and Bromophenol Blue (BPB) under UV irradiation. The prepared materials were characteriz...
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2022-10-01
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| author | Fadimatou Hassan Pierre Bonnet Jean Marie Dangwang Dikdim Nadege Gatcha Bandjoun Christophe Caperaa Sadou Dalhatou Abdoulaye Kane Hicham Zeghioud |
| author_facet | Fadimatou Hassan Pierre Bonnet Jean Marie Dangwang Dikdim Nadege Gatcha Bandjoun Christophe Caperaa Sadou Dalhatou Abdoulaye Kane Hicham Zeghioud |
| author_sort | Fadimatou Hassan |
| collection | DOAJ |
| description | Graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) based photocatalyst was synthesized and the photocatalytic performance was investigated for the removal of Eriochrome Black T (EBT) and Bromophenol Blue (BPB) under UV irradiation. The prepared materials were characterized by SEM-EDX, XRD, Raman, FTIR and DRS. Higher degradation efficiency for the same initial concentrations of EBT and BPB in presence of TiO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> have been achieved within 160 min of irradiation. The kinetic study showed that the photodegradation of BPB by TiO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> follows pseudo-first-order kinetics with an R2 value of 0.98. The addition of persulfate (PS) in BPB solution improved the degradation yield from 8.81% to 80.14% within 20 min of UV light irradiation. A Box-Behnken model was developed from three factors and Response surface methodology (RSM) was employed to identify the optimum conditions for the treatment of BPB solution by TiO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub>. The experimental values of degradation of BPB agreed with predicted values obtained from central composite design (CCD) analysis with an R<sup>2</sup> value of 0.9999. The scavenger study revealed that superoxide radical anion (O<sub>2</sub><sup>•−</sup>) plays a key role (68.89% of contribution) followed by OH<sup>•</sup> and h<sup>+</sup> with 22.40% and 15.55% of contribution, respectively. This study has obviously exhibited the potential of TiO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> composite as a promising catalyst for photocatalytic purposes. |
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| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-09T19:23:00Z |
| publishDate | 2022-10-01 |
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| spelling | doaj.art-83d6d3db2d9e458d969f307cc95bd9862023-11-24T03:13:43ZengMDPI AGWater2073-44412022-10-011420333110.3390/w14203331Synthesis and Investigation of TiO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> Performance for Photocatalytic Degradation of Bromophenol Blue and Eriochrome Black T: Experimental Design Optimization and Reactive Oxygen Species ContributionFadimatou Hassan0Pierre Bonnet1Jean Marie Dangwang Dikdim2Nadege Gatcha Bandjoun3Christophe Caperaa4Sadou Dalhatou5Abdoulaye Kane6Hicham Zeghioud7UniLaSalle-Ecole des Métiers de l’Environnement, Cyclann, Campus de Ker Lann, 35170 Bruz, FranceInstitut de Chimie de Clermont-Ferrand (ICCF), Université Clermont Auvergne, 24 Avenue Blaise Pascal, 63178 Aubiere, FranceDepartment of Chemistry, Faculty of Science, University of Maroua, Maroua 814, CameroonDepartment of Chemistry, Faculty of Science, University of Maroua, Maroua 814, CameroonInstitut de Chimie de Clermont-Ferrand (ICCF), Université Clermont Auvergne, 24 Avenue Blaise Pascal, 63178 Aubiere, FranceDepartment of Chemistry, Faculty of Science, University of Maroua, Maroua 814, CameroonUniLaSalle-Ecole des Métiers de l’Environnement, Cyclann, Campus de Ker Lann, 35170 Bruz, FranceUniLaSalle-Ecole des Métiers de l’Environnement, Cyclann, Campus de Ker Lann, 35170 Bruz, FranceGraphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) based photocatalyst was synthesized and the photocatalytic performance was investigated for the removal of Eriochrome Black T (EBT) and Bromophenol Blue (BPB) under UV irradiation. The prepared materials were characterized by SEM-EDX, XRD, Raman, FTIR and DRS. Higher degradation efficiency for the same initial concentrations of EBT and BPB in presence of TiO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> have been achieved within 160 min of irradiation. The kinetic study showed that the photodegradation of BPB by TiO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> follows pseudo-first-order kinetics with an R2 value of 0.98. The addition of persulfate (PS) in BPB solution improved the degradation yield from 8.81% to 80.14% within 20 min of UV light irradiation. A Box-Behnken model was developed from three factors and Response surface methodology (RSM) was employed to identify the optimum conditions for the treatment of BPB solution by TiO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub>. The experimental values of degradation of BPB agreed with predicted values obtained from central composite design (CCD) analysis with an R<sup>2</sup> value of 0.9999. The scavenger study revealed that superoxide radical anion (O<sub>2</sub><sup>•−</sup>) plays a key role (68.89% of contribution) followed by OH<sup>•</sup> and h<sup>+</sup> with 22.40% and 15.55% of contribution, respectively. This study has obviously exhibited the potential of TiO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> composite as a promising catalyst for photocatalytic purposes.https://www.mdpi.com/2073-4441/14/20/3331photocatalysisTiO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub>bromophenol blueEriochrome Black Tdye degradation |
| spellingShingle | Fadimatou Hassan Pierre Bonnet Jean Marie Dangwang Dikdim Nadege Gatcha Bandjoun Christophe Caperaa Sadou Dalhatou Abdoulaye Kane Hicham Zeghioud Synthesis and Investigation of TiO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> Performance for Photocatalytic Degradation of Bromophenol Blue and Eriochrome Black T: Experimental Design Optimization and Reactive Oxygen Species Contribution Water photocatalysis TiO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> bromophenol blue Eriochrome Black T dye degradation |
| title | Synthesis and Investigation of TiO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> Performance for Photocatalytic Degradation of Bromophenol Blue and Eriochrome Black T: Experimental Design Optimization and Reactive Oxygen Species Contribution |
| title_full | Synthesis and Investigation of TiO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> Performance for Photocatalytic Degradation of Bromophenol Blue and Eriochrome Black T: Experimental Design Optimization and Reactive Oxygen Species Contribution |
| title_fullStr | Synthesis and Investigation of TiO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> Performance for Photocatalytic Degradation of Bromophenol Blue and Eriochrome Black T: Experimental Design Optimization and Reactive Oxygen Species Contribution |
| title_full_unstemmed | Synthesis and Investigation of TiO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> Performance for Photocatalytic Degradation of Bromophenol Blue and Eriochrome Black T: Experimental Design Optimization and Reactive Oxygen Species Contribution |
| title_short | Synthesis and Investigation of TiO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> Performance for Photocatalytic Degradation of Bromophenol Blue and Eriochrome Black T: Experimental Design Optimization and Reactive Oxygen Species Contribution |
| title_sort | synthesis and investigation of tio sub 2 sub g c sub 3 sub n sub 4 sub performance for photocatalytic degradation of bromophenol blue and eriochrome black t experimental design optimization and reactive oxygen species contribution |
| topic | photocatalysis TiO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> bromophenol blue Eriochrome Black T dye degradation |
| url | https://www.mdpi.com/2073-4441/14/20/3331 |
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