A Novel N-Doped Nanoporous Bio-Graphene Synthesized from <i>Pistacia lentiscus</i> Gum and Its Nanocomposite with WO<sub>3</sub> Nanoparticles: Visible-Light-Driven Photocatalytic Activity
This paper reports the synthesis of a new nitrogen-doped porous bio-graphene (NPBG) with a specific biomorphic structure, using <i>Pistacia lentiscus</i> as a natural carbon source containing nitrogen that also acts as a bio-template. The obtained NPBG demonstrated the unique feature of...
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MDPI AG
2021-10-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/26/21/6569 |
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| author | Maryam Afsharpour Mehdi Elyasi Hamedreza Javadian |
| author_facet | Maryam Afsharpour Mehdi Elyasi Hamedreza Javadian |
| author_sort | Maryam Afsharpour |
| collection | DOAJ |
| description | This paper reports the synthesis of a new nitrogen-doped porous bio-graphene (NPBG) with a specific biomorphic structure, using <i>Pistacia lentiscus</i> as a natural carbon source containing nitrogen that also acts as a bio-template. The obtained NPBG demonstrated the unique feature of doped nitrogen with a 3D nanoporous structure. Next, a WO<sub>3</sub>/N-doped porous bio-graphene nanocomposite (WO<sub>3</sub>/NPBG-NC) was synthesized, and the products were characterized using XPS, SEM, TEM, FT-IR, EDX, XRD, and Raman analyses. The presence of nitrogen doped in the structure of the bio-graphene (BG) was confirmed to be pyridinic-N and pyrrolic-N with N1 peaks at 398.3 eV and 400.5 eV, respectively. The photocatalytic degradation of the anionic azo dyes and drugs was investigated, and the results indicated that the obtained NPBG with a high surface area (151.98 m<sup>2</sup>/g), unique electronic properties, and modified surface improved the adsorption and photocatalytic properties in combination with WO<sub>3</sub> nanoparticles (WO<sub>3</sub>-NPs) as an effective visible-light-driven photocatalyst. The synthesized WO<sub>3</sub>/NPBG-NC with a surface area of 226.92 m<sup>2</sup>/g displayed lower bandgap and higher electron transfer compared with blank WO<sub>3</sub>-NPs, leading to an increase in the photocatalytic performance through the enhancement of the separation of charge and a reduction in the recombination rate. At the optimum conditions of 0.015 g of the nanocomposite, a contact time of 15 min, and 100 mg/L of dyes, the removal percentages were 100%, 99.8%, and 98% for methyl red (MR), Congo red (CR), and methyl orange (MO), respectively. In the case of the drugs, 99% and 87% of tetracycline and acetaminophen, respectively, at a concentration of 10 mg/L, were removed after 20 min. |
| first_indexed | 2024-03-10T05:56:11Z |
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| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-10T05:56:11Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
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| series | Molecules |
| spelling | doaj.art-c767c80bab84417f8e2a67f0af0ae3332023-11-22T21:23:16ZengMDPI AGMolecules1420-30492021-10-012621656910.3390/molecules26216569A Novel N-Doped Nanoporous Bio-Graphene Synthesized from <i>Pistacia lentiscus</i> Gum and Its Nanocomposite with WO<sub>3</sub> Nanoparticles: Visible-Light-Driven Photocatalytic ActivityMaryam Afsharpour0Mehdi Elyasi1Hamedreza Javadian2Chemistry & Chemical Engineering Research Center of Iran (CCERCI), Tehran P.O. Box 14335-186, IranChemistry & Chemical Engineering Research Center of Iran (CCERCI), Tehran P.O. Box 14335-186, IranChemistry & Chemical Engineering Research Center of Iran (CCERCI), Tehran P.O. Box 14335-186, IranThis paper reports the synthesis of a new nitrogen-doped porous bio-graphene (NPBG) with a specific biomorphic structure, using <i>Pistacia lentiscus</i> as a natural carbon source containing nitrogen that also acts as a bio-template. The obtained NPBG demonstrated the unique feature of doped nitrogen with a 3D nanoporous structure. Next, a WO<sub>3</sub>/N-doped porous bio-graphene nanocomposite (WO<sub>3</sub>/NPBG-NC) was synthesized, and the products were characterized using XPS, SEM, TEM, FT-IR, EDX, XRD, and Raman analyses. The presence of nitrogen doped in the structure of the bio-graphene (BG) was confirmed to be pyridinic-N and pyrrolic-N with N1 peaks at 398.3 eV and 400.5 eV, respectively. The photocatalytic degradation of the anionic azo dyes and drugs was investigated, and the results indicated that the obtained NPBG with a high surface area (151.98 m<sup>2</sup>/g), unique electronic properties, and modified surface improved the adsorption and photocatalytic properties in combination with WO<sub>3</sub> nanoparticles (WO<sub>3</sub>-NPs) as an effective visible-light-driven photocatalyst. The synthesized WO<sub>3</sub>/NPBG-NC with a surface area of 226.92 m<sup>2</sup>/g displayed lower bandgap and higher electron transfer compared with blank WO<sub>3</sub>-NPs, leading to an increase in the photocatalytic performance through the enhancement of the separation of charge and a reduction in the recombination rate. At the optimum conditions of 0.015 g of the nanocomposite, a contact time of 15 min, and 100 mg/L of dyes, the removal percentages were 100%, 99.8%, and 98% for methyl red (MR), Congo red (CR), and methyl orange (MO), respectively. In the case of the drugs, 99% and 87% of tetracycline and acetaminophen, respectively, at a concentration of 10 mg/L, were removed after 20 min.https://www.mdpi.com/1420-3049/26/21/6569bio-graphenenitrogen-dopedtungsten oxidenanocompositephotocatalystadsorption |
| spellingShingle | Maryam Afsharpour Mehdi Elyasi Hamedreza Javadian A Novel N-Doped Nanoporous Bio-Graphene Synthesized from <i>Pistacia lentiscus</i> Gum and Its Nanocomposite with WO<sub>3</sub> Nanoparticles: Visible-Light-Driven Photocatalytic Activity Molecules bio-graphene nitrogen-doped tungsten oxide nanocomposite photocatalyst adsorption |
| title | A Novel N-Doped Nanoporous Bio-Graphene Synthesized from <i>Pistacia lentiscus</i> Gum and Its Nanocomposite with WO<sub>3</sub> Nanoparticles: Visible-Light-Driven Photocatalytic Activity |
| title_full | A Novel N-Doped Nanoporous Bio-Graphene Synthesized from <i>Pistacia lentiscus</i> Gum and Its Nanocomposite with WO<sub>3</sub> Nanoparticles: Visible-Light-Driven Photocatalytic Activity |
| title_fullStr | A Novel N-Doped Nanoporous Bio-Graphene Synthesized from <i>Pistacia lentiscus</i> Gum and Its Nanocomposite with WO<sub>3</sub> Nanoparticles: Visible-Light-Driven Photocatalytic Activity |
| title_full_unstemmed | A Novel N-Doped Nanoporous Bio-Graphene Synthesized from <i>Pistacia lentiscus</i> Gum and Its Nanocomposite with WO<sub>3</sub> Nanoparticles: Visible-Light-Driven Photocatalytic Activity |
| title_short | A Novel N-Doped Nanoporous Bio-Graphene Synthesized from <i>Pistacia lentiscus</i> Gum and Its Nanocomposite with WO<sub>3</sub> Nanoparticles: Visible-Light-Driven Photocatalytic Activity |
| title_sort | novel n doped nanoporous bio graphene synthesized from i pistacia lentiscus i gum and its nanocomposite with wo sub 3 sub nanoparticles visible light driven photocatalytic activity |
| topic | bio-graphene nitrogen-doped tungsten oxide nanocomposite photocatalyst adsorption |
| url | https://www.mdpi.com/1420-3049/26/21/6569 |
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