Photocatalysis over N-Doped TiO<sub>2</sub> Driven by Visible Light for Pb(II) Removal from Aqueous Media
The photocatalysis process over N-doped TiO<sub>2</sub> under visible light is examined for Pb(II) removal. The doping TiO<sub>2</sub> with N element was conducted by simple hydrothermal technique and using urea as the N source. The doped photocatalysts were characterized by...
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MDPI AG
2021-08-01
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| author | Endang Tri Wahyuni Titi Rahmaniati Aulia Rizky Hafidzah Suherman Suherman Adhitasari Suratman |
| author_facet | Endang Tri Wahyuni Titi Rahmaniati Aulia Rizky Hafidzah Suherman Suherman Adhitasari Suratman |
| author_sort | Endang Tri Wahyuni |
| collection | DOAJ |
| description | The photocatalysis process over N-doped TiO<sub>2</sub> under visible light is examined for Pb(II) removal. The doping TiO<sub>2</sub> with N element was conducted by simple hydrothermal technique and using urea as the N source. The doped photocatalysts were characterized by DRUVS, XRD, FTIR and SEM-EDX instruments. Photocatalysis of Pb(II) through a batch experiment was performed for evaluation of the doped TiO<sub>2</sub> activity under visible light, with applying various fractions of N-doped, photocatalyst mass, irradiation time, and solution pH. The research results attributed that N doping has been successfully performed, which shifted TiO<sub>2</sub> absorption into visible region, allowing it to be active under visible irradiation. The photocatalytic removal of Pb(II) proceeded through photo-oxidation to form PbO<sub>2</sub>. Doping N into TiO<sub>2</sub> noticeably enhanced the photo-catalytic oxidation of Pb(II) under visible light irradiation. The highest photocatalytic oxidation of 15 mg/L Pb(II) in 25 mL of the solution could be reached by employing TiO<sub>2</sub> doped with 10%w of N content 15 mg, 30 min of time and at pH 8. The doped-photocatalyst that was three times repeatedly used demonstrated significant activity. The most effective process of Pb(II) photo-oxidation under beneficial condition, producing less toxic and handleable PbO<sub>2</sub> and good repeatable photocatalyst, suggest a feasible method for Pb(II) remediation on an industrial scale. |
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| last_indexed | 2024-03-10T08:56:17Z |
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| spelling | doaj.art-2b3a46211ab8465ba489a686082e23be2023-11-22T07:07:05ZengMDPI AGCatalysts2073-43442021-08-0111894510.3390/catal11080945Photocatalysis over N-Doped TiO<sub>2</sub> Driven by Visible Light for Pb(II) Removal from Aqueous MediaEndang Tri Wahyuni0Titi Rahmaniati1Aulia Rizky Hafidzah2Suherman Suherman3Adhitasari Suratman4Chemistry Department, Faculty of Mathematic and Natural Sciences, Gadjah Mada University, Sekip Utara P.O. Box Bls 21, Yogyakarta 55281, IndonesiaChemistry Department, Faculty of Mathematic and Natural Sciences, Gadjah Mada University, Sekip Utara P.O. Box Bls 21, Yogyakarta 55281, IndonesiaChemistry Department, Faculty of Mathematic and Natural Sciences, Gadjah Mada University, Sekip Utara P.O. Box Bls 21, Yogyakarta 55281, IndonesiaChemistry Department, Faculty of Mathematic and Natural Sciences, Gadjah Mada University, Sekip Utara P.O. Box Bls 21, Yogyakarta 55281, IndonesiaChemistry Department, Faculty of Mathematic and Natural Sciences, Gadjah Mada University, Sekip Utara P.O. Box Bls 21, Yogyakarta 55281, IndonesiaThe photocatalysis process over N-doped TiO<sub>2</sub> under visible light is examined for Pb(II) removal. The doping TiO<sub>2</sub> with N element was conducted by simple hydrothermal technique and using urea as the N source. The doped photocatalysts were characterized by DRUVS, XRD, FTIR and SEM-EDX instruments. Photocatalysis of Pb(II) through a batch experiment was performed for evaluation of the doped TiO<sub>2</sub> activity under visible light, with applying various fractions of N-doped, photocatalyst mass, irradiation time, and solution pH. The research results attributed that N doping has been successfully performed, which shifted TiO<sub>2</sub> absorption into visible region, allowing it to be active under visible irradiation. The photocatalytic removal of Pb(II) proceeded through photo-oxidation to form PbO<sub>2</sub>. Doping N into TiO<sub>2</sub> noticeably enhanced the photo-catalytic oxidation of Pb(II) under visible light irradiation. The highest photocatalytic oxidation of 15 mg/L Pb(II) in 25 mL of the solution could be reached by employing TiO<sub>2</sub> doped with 10%w of N content 15 mg, 30 min of time and at pH 8. The doped-photocatalyst that was three times repeatedly used demonstrated significant activity. The most effective process of Pb(II) photo-oxidation under beneficial condition, producing less toxic and handleable PbO<sub>2</sub> and good repeatable photocatalyst, suggest a feasible method for Pb(II) remediation on an industrial scale.https://www.mdpi.com/2073-4344/11/8/945doping NTiO<sub>2</sub>Pb(II)photocatalytic-oxidationvisible light |
| spellingShingle | Endang Tri Wahyuni Titi Rahmaniati Aulia Rizky Hafidzah Suherman Suherman Adhitasari Suratman Photocatalysis over N-Doped TiO<sub>2</sub> Driven by Visible Light for Pb(II) Removal from Aqueous Media Catalysts doping N TiO<sub>2</sub> Pb(II) photocatalytic-oxidation visible light |
| title | Photocatalysis over N-Doped TiO<sub>2</sub> Driven by Visible Light for Pb(II) Removal from Aqueous Media |
| title_full | Photocatalysis over N-Doped TiO<sub>2</sub> Driven by Visible Light for Pb(II) Removal from Aqueous Media |
| title_fullStr | Photocatalysis over N-Doped TiO<sub>2</sub> Driven by Visible Light for Pb(II) Removal from Aqueous Media |
| title_full_unstemmed | Photocatalysis over N-Doped TiO<sub>2</sub> Driven by Visible Light for Pb(II) Removal from Aqueous Media |
| title_short | Photocatalysis over N-Doped TiO<sub>2</sub> Driven by Visible Light for Pb(II) Removal from Aqueous Media |
| title_sort | photocatalysis over n doped tio sub 2 sub driven by visible light for pb ii removal from aqueous media |
| topic | doping N TiO<sub>2</sub> Pb(II) photocatalytic-oxidation visible light |
| url | https://www.mdpi.com/2073-4344/11/8/945 |
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