Synthesis and characterization of green tea synthesized iron nanocatalysts for brymothymol blue (BTB) degradation
Date
2016Author
Mutuku, Katithi D
Michira, Immaculate N
Guto, Peterson M
Baker, Priscilla
Kamau, Geoffrey N
Iwuoha, Emmanuel
Type
ArticleLanguage
enMetadata
Show full item recordAbstract
Iron nanoparticles (FeNPs) were prepared from the green tea extracts at different temperatures through green synthesis procedure and characterized by various physicochemical techniques like UV-Visible spectroscopy, FTIR Spectroscopy, energy dispersive X-ray spectrometry (EDS), X-ray diffraction and high resolution tunneling microscopy (HRTEM) and the results confirmed the synthesis of polydisperse and stable FeNPs by the tea extracts. The catalytic activity of FeNPs was investigated using a common environmental pollutant BTB often used in textile industries for dyeing purposes. In these tests, catalytic degradation of BTB with FeNPs at a 10 µL or 30 µL concentration was done in the presence of 2% hydrogen peroxide. Results show no BTB degradation in the absence of the FeNPs. However, a 38% and 68% degradation of BTB was realized in the presence of 10 µL and 30 µL FeNPs respectively indicating that the iron nanocatalysts were responsible for the dye degradation. The BTB degradation kinetics was found to follow pseudo-first order kinetics with rate constants at the two catalyst concentrations being 0.023 min<sup>-1</sup> and 0.063 min<sup>-1</sup> respectively.
URI
http://eds.a.ebscohost.com/abstract?site=eds&scope=site&jrnl=16625250&AN=116581579&h=a0Uj8vO7c0LcW%2fFU%2fVKQnZInC2oqpj5K7mXhvlg2dWMWOImGbJl6oBKuuw%2fwoY4q3kJ%2b7VqshW%2bawNTH6cv9rA%3d%3d&crl=c&resultLocal=ErrCrlNoResults&resultNs=Ehost&crlhashurl=login.aspx%3fdirect%3dtrue%26profile%3dehost%26scope%3dsite%26authtype%3dcrawler%26jrnl%3d16625250%26AN%3d116581579http://hdl.handle.net/11295/100584
Citation
Katithi, David Mutuku, et al. "SYNTHESIS AND CHARACTERIZATION OF GREEN TEA STABILIZED IRON NANOCATALYSTS FOR BRYMOTHYMOL BLUE (BTB) DEGRADATION." Journal of Nano Research 42 (2016).Publisher
University of Nairobi
Rights
Attribution-NonCommercial-NoDerivs 3.0 United StatesUsage Rights
http://creativecommons.org/licenses/by-nc-nd/3.0/us/Collections
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