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INTERNATIONAL JOURNAL OF SCIENTIFIC DEVELOPMENT AND RESEARCH International Peer Reviewed & Refereed Journals, Open Access Journal ISSN Approved Journal No: 2455-2631 | Impact factor: 8.15 | ESTD Year: 2016 open access , Peer-reviewed, and Refereed Journals, Impact factor 8.15 |
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| Paper Title: | Enhanced Biological and Photo catalytic activity of polypyrrole-BiVO4 nanocomposite |
| Authors Name: | M. Sangareswari , T. Pradeep , T.Shapter Hasmi |
| Unique Id: | IJSDR2003053 |
| Published In: | Volume 5 Issue 3, March-2020 |
| Abstract: | Photo catalytic degradation plays a significant role for the decomposition of organic pollutant in water since it is cost effective and environment-friendly. Semiconductor are the prominent choice for the photo catalytic degradation that exhibits remarkable activities upon ultra violet (UV) light irradiation and fails to utilize the maximum part of the solar spectrum i.e. visible light fraction. Bismuth vanadate (BiVO4) has recently attracted much attention as one of the Ti–free photo catalysts suitable for visible light photo catalytic degradation. Unfortunately, its quick recombination of charge carriers, poor adsorption capacity, and critical drawback of photo corrosion are pulling the researchers to think about suitable modification of the BiVO4. In this exertion, we attempted here to improve the adsorption capacity and visible light driven photo catalytic activity of BiVO4 towards methylene blue (MB) by combining with electron donating organic polymer polypyrrole (PPy). This PPy-BiVO4 nanocomposite was synthesized using chemical oxidative polymerization method and characterized by TEM, SEM-EDAX, XRD, UV-DRS, TGA, DTA and PL analysis. Photo catalytic experiments were performed using direct sunlight irradiation and the observed results show that the PPy-BiVO4 nanocomposite degraded MB more efficiently than the pure BiVO4. The photocatalytic dye degradation performance obtained in 75.8% for MB dye owing to the interaction between the catalyst and the MB dye. The another possible reason for that due to its enhanced surface area and electron transfer rate. The one more possible reason for that, same composition and similar energy structure which affected the photocatalytic activity of the prepared material under UV and Solar light irradiation, which was attributed to the distortion of the Bi-O polyhedron by 6s2 lone pairs of Bi3+, the results indicated that the different distortion of the metal-oxygen polyhedron is another important factor affecting the photocatalytic activity via causing different elastic properties of the catalysts and affecting separation efficiency and dispersion of the photo-generated electrons and holes. Moreover, the PPy-BiVO4 nanocomposite exhibits easy separation and less deactivation after several runs. It concludes that the new PPy-BiVO4 nanocomposite acting as excellent photo catalyst for the decomposition of MB and it could be a potential candidate for essential waste water treatment. |
| Keywords: | Polypyrrole; Bismuth Vanadate; Zero point charge; Adsorption; Visible light; Methylene Blue |
| Cite Article: | "Enhanced Biological and Photo catalytic activity of polypyrrole-BiVO4 nanocomposite", International Journal of Science & Engineering Development Research (www.ijsdr.org), ISSN:2455-2631, Vol.5, Issue 3, page no.316 - 326, March-2020, Available :http://www.ijsdr.org/papers/IJSDR2003053.pdf |
| Downloads: | 000337067 |
| Publication Details: | Published Paper ID: IJSDR2003053 Registration ID:191507 Published In: Volume 5 Issue 3, March-2020 DOI (Digital Object Identifier): Page No: 316 - 326 Publisher: IJSDR | www.ijsdr.org ISSN Number: 2455-2631 |
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