Photocatalytic Degradation of Organic Pollutants by Using Nanocrystalline Boron‐doped TiO2 Catalysts. Issue 14 (12th April 2021)

• Record Type: Journal Article
• Authors: Barkul, Rani P.; Sutar, Radhakrishna S.; Patil, Meghshyam K.; Delekar, Sagar D.
• Is Part Of: ChemistrySelect. Volume 6:Issue 14(2021)
• Page Start: 3360
• Page End: 3369
• Publication Date: 2021-04-12
• Subjects: Anatase TiO2 -- B-doped TiO2 Nanoparticle -- Photocatalytic Degradation -- Sol-Gel Method; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.202003910
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: In this work, bare or mixed environmentally non‐benign organic pollutants have been decontaminated using boron‐doped TiO2 nanoparticles (B@TiO2 ). B@TiO2 nanoparticles (NPs) with varying content of boron (0.0 to 7.0 mol %) are synthesized using sol‐gel method. These NPs are characterized by using different tools. XRD reveals the high crystalline nature with formation of anatase phase and also shows slight increase in crystallite size with increase in boron content in TiO2 host lattice. The optical shift towards higher wavelength increases with increase of boron doping and hence corresponding decrease in optical band gap of doped NPs is confirmed. FTIR and TGA studies reveal the increase of surface hydroxylation of NPs with increase in dopant content. B@TiO2 samples have been used for the photocatalytic degradation of bisphenol A, rhodamine B, methylene blue, methyl orange and mixture of these three dyes under sunlight illumination. 7.0 mol % B@TiO2 has shown the best activity than other prepared samples. Rate of degradation of mixed dyes using 7.0 mol % B@TiO2 is about seven times higher to that of bare TiO2 and also shown higher rate than other doped samples. Abstract : Visible light active B‐doped TiO2 nanoparticles are synthesized by simple sol‐gel method. Decrease in optical band gap and increase in surface hydroxylation have been observed with increase in boron content in nanoparticles. B‐doped TiO2 nanoparticles have shown excellent photocatalytic activity for degradation of bisphenol A, methylene blue, methyl orange, rhodamine B and mixture of these three dyes in presence of direct sunlight.