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

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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Autores principales: Maryam Afsharpour, Mehdi Elyasi, Hamedreza Javadian
Formato: article
Lenguaje:EN
Publicado: MDPI AG 2021
Materias:
bio-graphene
nitrogen-doped
tungsten oxide
nanocomposite
photocatalyst
adsorption
Organic chemistry
QD241-441
Acceso en línea:https://doaj.org/article/c767c80bab84417f8e2a67f0af0ae333
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spelling oai:doaj.org-article:c767c80bab84417f8e2a67f0af0ae3332021-11-11T18:33:01ZA 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 Activity10.3390/molecules262165691420-3049https://doaj.org/article/c767c80bab84417f8e2a67f0af0ae3332021-10-01T00:00:00Zhttps://www.mdpi.com/1420-3049/26/21/6569https://doaj.org/toc/1420-3049This 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.Maryam AfsharpourMehdi ElyasiHamedreza JavadianMDPI AGarticlebio-graphenenitrogen-dopedtungsten oxidenanocompositephotocatalystadsorptionOrganic chemistryQD241-441ENMolecules, Vol 26, Iss 6569, p 6569 (2021)
institution DOAJ
collection DOAJ
language EN
topic bio-graphene
nitrogen-doped
tungsten oxide
nanocomposite
photocatalyst
adsorption
Organic chemistry
QD241-441
spellingShingle bio-graphene
nitrogen-doped
tungsten oxide
nanocomposite
photocatalyst
adsorption
Organic chemistry
QD241-441
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
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.
format article
author Maryam Afsharpour
Mehdi Elyasi
Hamedreza Javadian
author_facet Maryam Afsharpour
Mehdi Elyasi
Hamedreza Javadian
author_sort Maryam Afsharpour
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_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_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_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
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/c767c80bab84417f8e2a67f0af0ae333
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