@article { ISI:000339692700028,
	title = {Defluoridation using biomimetically synthesized nano zirconium chitosan composite: kinetic and equilibrium studies},
	journal = {Journal of Hazardous Materials},
	volume = {276},
	year = {2014},
	month = {JUL},
	pages = {232-240},
	publisher = {ELSEVIER SCIENCE BV},
	type = {Article},
	address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS},
	abstract = {<p>{The present study reports a novel approach for synthesis of Zr nanoparticles using aqueous extract of Aloe vera. Resulting nanoparticles were embedded into chitosan biopolymer and termed as CNZr composite. The composite was subjected to detailed adsorption studies for removal of fluoride from aqueous solution. The synthesized Zr nanoparticles showed UV-vis absorption peak at 420 nm. TEM result showed the formation of polydispersed, nanoparticles ranging from 18 nm to 42 nm. SAED and XRD analysis suggested an fcc (face centered cubic) Zr crystallites. EDAX analysis suggested that Zr was an integral component of synthesized nanoparticles. FT-IR study indicated that functional group like -NH</p>},
	keywords = {Aloe vera, Chitosan, FT-IR spectroscopy, Sorption, Zirconium nanoparticles},
	issn = {0304-3894},
	doi = {10.1016/j.jhazmat.2014.05.038},
	author = {Prasad, Kumar Suranjit and Amin, Yesha and Selvaraj, Kaliaperumal}
}
@article {46857,
	title = {Removal of fluoride from aqueous solution by mesoporous silica nanoparticles functionalized with chitosan derived from mushroom},
	journal = {Journal of Macromolecular Science Part A-Pure and Applied Chemistry},
	volume = {57},
	year = {2020},
	month = {SEP },
	pages = {619-627},
	type = {Article},
	abstract = {<p>In the present study, chitosan functionalized mesoporous silica nanoparticles have been synthesized. Chitosan derived from an edible mushroom, Agaricus bisporus was used during synthesis of chitosan functionalized silica nanoparticles. The functionalized silica nanoparticles were subjected to fluoride sorption using a batch method which subsequently showed removal efficiency of 95\% with maximum sorption capacity, 58.8 mg/g. The characterization of nanoparticles was carried out by SEM, EDAX, XRD and FTIR analysis respectively. EDAX analysis suggested that oxygen, 51.83\% and silica 37.24\% was main constituent of the functionalized nanomaterials. XRD yielded characteristic diffraction pattern corresponding to the lattice planes (100), (110), (112), (120), (200) and (220) respectively. Sorption data was used to study equilibrium isotherm namely Langmuir and Freundlich model. The adsorption capacity increased with temperature while kinetics studies revealed that the adsorption process followed a pseudo-second-order rate equation. The enthalpy change (Delta H) and entropy change (Delta S) was found to be -31.36 kJmol(-1) and -7.75 Jmol(-1) K-1, showing endothermic and spontaneous nature of the fluoride adsorption. Data suggested that the nature of adsorption belonged to chemisorptions. The overall results suggested that the synthesized nanoparticles showed strong and specific affinity for fluoride and could be excellent adsorbents for defluoridation.</p>
},
	keywords = {Adsorption, Chitosan, EDAX, Fluoride, SEM},
	issn = {1060-1325},
	doi = {10.1080/10601325.2020.1738896, Early Access Date = MAY 2020},
	author = {Srivastava, Anushree and Kumari, Madhu and Ramanathan, Alagappan and Selvaraj, Kaliaperumal and Prasad, Bablu and Prasad, Kumar Suranjit}
}
