000			03462ntm a2200397 i 4500
999			_c7405 _d7411
001			vtls000103180
003			KUKTEM
005			20251117113349.0
008			180329s2018 my da f am 000 0 eng d
020			_aTHE0000197(Local)
020			_aTHE0009016(Local) _qhardback
039		9	_a201905141007 _bnazirah _c201904161247 _dnazri
040			_aUMP _beng _cUMP _erda
090			_aFIST .R64 2018 r Thesis
100	0		_aNik Rohani Nik Mustapa, _eauthor.
245	1	0	_aSynthesis and characterisation of metal ion-imprinted polymers for separation of rare earth elements / _cNik Rohani Nik Mustapa
246	0	3	_aSynthesis and characterisation of metal ion-imprinted polymers for separation of selective rare earth elements
264		1	_aKuantan, Pahang : _bUMP, _c2018
264		4	_c© 2018
300			_axvii, 85 pages : _billustrations (some color), chart ; _c30 cm. + _e1 CD-ROM
336			_atext _2rdacontent
336			_atext _2rdacontent
337			_aunmediated _2rdamedia
337			_acomputer _2rdamedia
338			_avolume _2rdacarrier
338			_acomputer disc _2rdacarrier
347			_atext file _bPDF _2rda
500			_aFaculty of Industrial Sciences and Technology
502			_aThesis (Master of Science) -- Universiti Malaysia Pahang – 2018
504			_aIncludes bibliographical references
520	3		_aIon imprinted polymers (IIPs) have received much attention in diverse fields owing to their high selectivity for targeted metal ions. In the present study, lanthanide-ion imprinted polymers (L-IIPs) were synthesised by dissolving stoichiometric amounts of lanthanum ion and selected complexing agents either Schiff bases, azobenzene base ligands and also indole compounds with solvent in the presence of cross-linking agent (ethylene glycol dimethacrylate (EGDMA)), functional monomer (4-vinylpyridine), and initiator (2,2-azobisisobutyronitrile (AIBN)). The cavities in the polymer materials corresponding to the specific lanthanide ions were created by leaching the polymer using aqueous HCl solution after polymerization. The complete removal of the lanthanide ions from the L-IIPs were confirmed by ICP-MS, FESEM and solid state analysis by UV-vis NIR spectroscopy. FTIR study confirmed the complexation between the L-IIPs and lanthanide ions through the nitrogen, hydroxyl oxygen and sulphur of Schiff base, azobenzene base ligands and indole compounds. At optimum (pH 6), the maximum sorption capacity achieved by the L-IIPs are estimated to be La-IIP-Schiff (25.0 mg g-1), La-IIP-Azo (24.3 mg g-1), Ce-IIP-Schiff (24.5 mg g-1), Ce-IIP-Azo (24.7 mg g-1), Pr-IIP-Schiff (125.3 mg g-1), Nd-IIP-Schiff (126.5 mg g-1), Sm-IIP-Schiff (127.6 mg g-1), Eu-IIP-Schiff (128.2 mg g-1) and Gd-IIP-Schiff (129.1 mg g-1). In the selectivity study, the L-IIPs were found to show good selectivity to the praseodymium, gadolinium, europium, samarium, cerium, neodymium and lanthanum ion in the presence of coexisting cation, promethium. It was found that imprinting results increased the affinity of the material toward several lanthanide ions over other competitor metal ions with the same charge and similar ionic radii. The synthesized L-IIPs were repeatedly used and regenerated for 8 times without a significant decrease in polymer binding affinity.
610	2	0	_aFaculty of Industrial Sciences and Technology _xDissertations
650		0	_aUniversities and colleges _xDisertations
650		0	_aTheses
942			_2lcc _cTHESIS