Surface response technique optimized green synthesis of polymeric nanocomposite for adsorptive uptake-sunlight/UV-visible irradiated mineralization of fuchsin basic

Publication date: Available online 28 March 2019Source: Journal of Advanced ResearchAuthor(s): Priya, Balbir Singh Kaith, Uma Shanker, Bhuvanesh GuptaAbstractThe article is related to sunlight and UV-visible mineralization of harmful fuchsin basic (FB) dye. The nanocomposite used is a cross linked network of acrylic acid synthesized inside poly(acrylamide) grafted water-soluble extract of Guggul in the presence of UV-visible respondent bismuth ferrite nanoparticles. The optimization was performed using surface response technique followed by the central composite method. The maximum % water uptake obtained for samples I and II was calculated as 1192.6% and 285.82%, respectively. HR-TEM analysis could evaluate the average particle size of bismuth ferrite nanoparticles as 47.34 nm. Various samples were characterized using FE-SEM, XRD, XPS, BET and FT-IR techniques. The nanocomposite could uptake FB dye with mineralization up to 97.3% and 98.8% under sunlight and photochemical reactor, respectively for 500 mg nanocomposite dose in 10 mg L-1 concentrated FB solution. Nanocomposite attained maximum FB uptake at around 8 h and further mineralization was carried out for 4 h. Dye uptake is an adsorption process mainly favored through ionic interactions. However, mineralization is a consequence of advanced oxidation process involving free radical species (OH. and O2.). The overall process of uptake-mineralization resembled second order kinetics and Langmuir theorem (monolayer adsorptio...
Source: Journal of Advanced Research - Category: Research Source Type: research