PREPARATION OF CHITOSAN-GOLD NANOPARTICLES: PART 2. THE ROLE OF CHITOSAN
ABSTRACT Colloidal gold nanoparticlesprepared by employingchitosan as the stabilizer in solvent of methanol-acetic acid solution were stable for months without precipitation. The mole ratio of chitosan-gold ions of 5:1 - 30:1 gave dispersed and fine gold particles in range of 9.4-10.4 nm. Gold reduc...
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| Format: | Article |
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[Yogyakarta] : Universitas Gadjah Mada
2008
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| _version_ | 1826033125570904064 |
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| author | Perpustakaan UGM, i-lib |
| author_facet | Perpustakaan UGM, i-lib |
| author_sort | Perpustakaan UGM, i-lib |
| collection | UGM |
| description | ABSTRACT
Colloidal gold nanoparticlesprepared by employingchitosan as the stabilizer in solvent of methanol-acetic acid
solution were stable for months without precipitation. The mole ratio of chitosan-gold ions of 5:1 - 30:1 gave
dispersed and fine gold particles in range of 9.4-10.4 nm. Gold reduction in chitosan matrix was faster at higher
chitosan concentration, and molar ratio of chi: Au, from 5:1 to 40:1. Higher acidity of acetic acid (pH 2-6) led to
faster reduction of gold ions. The intensity of gold metal colloid plasmon band increased at higher concentration of
acetic acid. Chitosan functioned both as a stabilizer and a reducing agent for gold ions. Gold colloidal particles
immobilized on chitosan coated Ti02 as the solid support gave more dispersed and smaller particles (4.6 nm)
compared with gold particles supportedon Ti02 without chitosan coating.
Keywords: gold nanoparticles, chitosan, chitosan coated Ti02 |
| first_indexed | 2024-03-13T19:05:14Z |
| format | Article |
| id | oai:generic.eprints.org:27920 |
| institution | Universiti Gadjah Mada |
| last_indexed | 2024-03-13T19:05:14Z |
| publishDate | 2008 |
| publisher | [Yogyakarta] : Universitas Gadjah Mada |
| record_format | dspace |
| spelling | oai:generic.eprints.org:279202014-06-18T00:25:02Z https://repository.ugm.ac.id/27920/ PREPARATION OF CHITOSAN-GOLD NANOPARTICLES: PART 2. THE ROLE OF CHITOSAN Perpustakaan UGM, i-lib Jurnal i-lib UGM ABSTRACT Colloidal gold nanoparticlesprepared by employingchitosan as the stabilizer in solvent of methanol-acetic acid solution were stable for months without precipitation. The mole ratio of chitosan-gold ions of 5:1 - 30:1 gave dispersed and fine gold particles in range of 9.4-10.4 nm. Gold reduction in chitosan matrix was faster at higher chitosan concentration, and molar ratio of chi: Au, from 5:1 to 40:1. Higher acidity of acetic acid (pH 2-6) led to faster reduction of gold ions. The intensity of gold metal colloid plasmon band increased at higher concentration of acetic acid. Chitosan functioned both as a stabilizer and a reducing agent for gold ions. Gold colloidal particles immobilized on chitosan coated Ti02 as the solid support gave more dispersed and smaller particles (4.6 nm) compared with gold particles supportedon Ti02 without chitosan coating. Keywords: gold nanoparticles, chitosan, chitosan coated Ti02 [Yogyakarta] : Universitas Gadjah Mada 2008 Article NonPeerReviewed Perpustakaan UGM, i-lib (2008) PREPARATION OF CHITOSAN-GOLD NANOPARTICLES: PART 2. THE ROLE OF CHITOSAN. Jurnal i-lib UGM. http://i-lib.ugm.ac.id/jurnal/download.php?dataId=10983 |
| spellingShingle | Jurnal i-lib UGM Perpustakaan UGM, i-lib PREPARATION OF CHITOSAN-GOLD NANOPARTICLES: PART 2. THE ROLE OF CHITOSAN |
| title | PREPARATION OF CHITOSAN-GOLD NANOPARTICLES: PART 2. THE ROLE OF CHITOSAN |
| title_full | PREPARATION OF CHITOSAN-GOLD NANOPARTICLES: PART 2. THE ROLE OF CHITOSAN |
| title_fullStr | PREPARATION OF CHITOSAN-GOLD NANOPARTICLES: PART 2. THE ROLE OF CHITOSAN |
| title_full_unstemmed | PREPARATION OF CHITOSAN-GOLD NANOPARTICLES: PART 2. THE ROLE OF CHITOSAN |
| title_short | PREPARATION OF CHITOSAN-GOLD NANOPARTICLES: PART 2. THE ROLE OF CHITOSAN |
| title_sort | preparation of chitosan gold nanoparticles part 2 the role of chitosan |
| topic | Jurnal i-lib UGM |
| work_keys_str_mv | AT perpustakaanugmilib preparationofchitosangoldnanoparticlespart2theroleofchitosan |