000			02259cam a2200349 a 4500
003			EG-GiCUC
005			20250223032546.0
008			200825s2020 ua d f m 000 0 eng d
040			_aEG-GiCUC _beng _cEG-GiCUC
041	0		_aeng
049			_aDeposite
097			_aPh.D
099			_aCai01.12.09.Ph.D.2020.Es.U
100	0		_aEsmat Mansour Saleh Elfeky
245	1	0	_aUsing synthetic glasses in water treatment / _cEsmat Mansour Saleh Elfeky ; Supervised Mohamed R. Shehata , Marcus Jopony , Yahia H. Elbashar
246	1	5	_aأستخدام الزجاج المصنع فى معالجة المياه
260			_aCairo : _bEsmat Mansour Saleh Elfeky , _c2020
300			_a125 P. : _bcharts ; _c25cm
502			_aThesis (Ph.D.) - Cairo University - Faculty of Science - Department of Inorganic Chemistry
520			_aThe thesis involves the preparation of the binary system of Phosphate Based Glass (PBG) x P₂O₅ - (100 - x) Na₂O mol % and investigates the compositions that form glassy matrix. It is found that x in the range between x = 40 to 60 mole % and divided in to 5 glass samples (x = 40, 45, 50, 55, 60) and for compositions of 40 > x > 60 no glassy matrix is formed. The tabulated data of peak center intensities of IR spectra of sodium phosphate glasses, it is found that the suggested vibrational modes of structural phosphate chains and terminal groups of the absorption bands shifts with increasing the Na₂O mole % content. The amount of bridging phosphorous, shows a maximum value for the glass containing 60 mol % Na₂O due to the depolymerization of the phosphate matrix with increasing Na2O content from 40 to 60 mol % via a breakdown of some terminal bonds (P=O) in the glass network which decreases the bond strength, consequently the peak center is shifted towards lower wave number
530			_aIssued also as CD
653		4	_aBand deconvolution of IR spectra
653		4	_aDissolution rate
653		4	_aPhosphate Based Glass (PBG)
700	0		_aMarcus Jopony , _eSupervisor
700	0		_aMohamed R. Shehata , _eSupervisor
700	0		_aYahia H. Elbashar , _eSupervisor
856			_uhttp://172.23.153.220/th.pdf
905			_aAmira _eCataloger
905			_aNazla _eRevisor
942			_2ddc _cTH
999			_c77378 _d77378