000			02667nam a22003137a 4500
003			OSt
005			20250714101009.0
008			250714b |||||||| |||| 00| 0 eng d
040			_aTUPM _bEnglish _cTUPM _dTUPM _erda
050			_aBTH RB 37 _bD45 2025
100			_aDela Cruz, Christian B. _eauthor
245			_aGreen synthesis of silver nanoparticles using madre cacao (gliricidia sepium jacq.) leaves aqueous extract/ _cChristian B. Dela Cruz, Shekinah P. Asencio, Yvonne Louise Kim F. Catama, and Shaira Joy T. Monreal.--
260			_aManila: _bTechnological University of the Philippines, _c2025.
300			_a95pages: _c29cm.
336			_2rdacontent
337			_2rdamedia
338			_2rdacarrier
500			_aBachelor's thesis
502			_aCollege Of Science.-- _bBachelor of applied science in laboratory technology: _cTechnological University of the Philippines, _d2025.
504			_aIncludes bibliographic references and index.
520			_aSeveral methods for synthesis of silver nanoparticles have been garnering attention, specifically the use of biologically available materials that can act as the reducing agents for the metal cations of silver like plant extracts. The present study demonstrated the use of Gliricidia sepium aqueous plant extract for green synthesis and investigated the effects of pH, volume ratio of reactants, silver nitrate concentration, temperature, and reaction time on the physical properties of the silver nanoparticle. In this study, silver nanoparticles were synthesized by the reduction method of silver nitrate using the aqueous extract of Gliricidia sepium. The results showed that silver nanoparticles prepared using Gliricidia sepium aqueous extract displayed a brownish yellow color, indicating the biosynthesis reduction of silver nanoparticles. Additionally, the optimized conditions were found to be at pH 12, a reactant volume ratio of 1:1.5 (plant extract to silver nitrate), using 5mM silver nitrate, and under 70 - 80°C. The study concluded the successful synthesis of silver nanoparticles that showed characteristics of 410 - 450 nm SPR peak, formation of Ag-O bonding at 600- 555 cm-1 in the FTIR spectra, a quasi-spherical shape of uniform clusters at 30 nm size, and Bragg's reflection of (111), (200), and (220), further confirming the face centered cubic (fcc) structure of the silver nanoparticles.
650			_aMadre Cacao
650			_aSilver nanoparticles
650			_aPlant extract
700			_aAsencio, Shekinah P. _eauthor
700			_aCatama, Yvonne Louise Kim F. _eauthor
700			_aMonreal, Shaira Joy T. _eauthor
942			_2lcc _cBTH COS _n0
999			_c30324 _d30324