Arabinogalactan from the Western larch tree: A new, purified and highly water-soluble polysaccharide-based protecting agent for maintaining precious metal nanoparticles in colloidal suspension
TEM and non-contact atomic force microscopy studies conducted on unprotected and protected platinum, palladium and silver nanoparticle suspensions provide evidence for the protective ability of a newly available polysaccharide known as arabinogalactan. The arabinogalactan offers advantages over conv...
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| Veröffentlicht in: | Journal of materials science 2002-02, Vol.37 (3), p.493-504 |
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| creator | Mucalo, M. R Bullen, C. R Manley-Harris, Merilyn McIntire, Theresa M |
| description | TEM and non-contact atomic force microscopy studies conducted on unprotected and protected platinum, palladium and silver nanoparticle suspensions provide evidence for the protective ability of a newly available polysaccharide known as arabinogalactan. The arabinogalactan offers advantages over conventionally used gum arabic in being highly water soluble, capable of being prepared in higher purity and not settling out insoluble material over time. Nanoparticle suspensions prepared in the presence of this protecting agent show a change in overall particle morphology and reduction in the necklace like aggregation typical of unprotected particles on the TEM grids. It is believed that the protective action exerted by the arabinogalactan on the metal nanoparticles arises out of its unique spheroidal structure adopted in aqueous solution which is thought to sequester individual metal particles by virtue of surface interactions between oxide functionalities on the colloid and hydroxyl groups on the arabinogalactan. |
| doi_str_mv | 10.1023/A:1013757221776 |
| format | Article |
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R ; Bullen, C. R ; Manley-Harris, Merilyn ; McIntire, Theresa M</creator><creatorcontrib>Mucalo, M. R ; Bullen, C. R ; Manley-Harris, Merilyn ; McIntire, Theresa M</creatorcontrib><description>TEM and non-contact atomic force microscopy studies conducted on unprotected and protected platinum, palladium and silver nanoparticle suspensions provide evidence for the protective ability of a newly available polysaccharide known as arabinogalactan. The arabinogalactan offers advantages over conventionally used gum arabic in being highly water soluble, capable of being prepared in higher purity and not settling out insoluble material over time. Nanoparticle suspensions prepared in the presence of this protecting agent show a change in overall particle morphology and reduction in the necklace like aggregation typical of unprotected particles on the TEM grids. It is believed that the protective action exerted by the arabinogalactan on the metal nanoparticles arises out of its unique spheroidal structure adopted in aqueous solution which is thought to sequester individual metal particles by virtue of surface interactions between oxide functionalities on the colloid and hydroxyl groups on the arabinogalactan.</description><identifier>ISSN: 0022-2461</identifier><identifier>EISSN: 1573-4803</identifier><identifier>DOI: 10.1023/A:1013757221776</identifier><identifier>CODEN: JMTSAS</identifier><language>eng</language><publisher>Heidelberg: Kluwer Academic Publishers</publisher><subject>Aqueous solutions ; arabinogalactans ; Atomic force microscopy ; Chemistry ; Colloidal state and disperse state ; Colloids ; Exact sciences and technology ; General and physical chemistry ; Gold ; gum arabic ; Hydroxyl groups ; Larix occidentalis ; Materials science ; Metal particles ; microscopy ; Morphology ; Nanoparticles ; nanosilver ; Palladium ; Physical and chemical studies. Granulometry. Electrokinetic phenomena ; Platinum ; Polysaccharides ; Silver ; Spheroidal structure ; surface interactions ; transmission electron microscopy ; trees ; Water chemistry ; Water purification</subject><ispartof>Journal of materials science, 2002-02, Vol.37 (3), p.493-504</ispartof><rights>2002 INIST-CNRS</rights><rights>Journal of Materials Science is a copyright of Springer, (2002). 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R</creatorcontrib><creatorcontrib>Manley-Harris, Merilyn</creatorcontrib><creatorcontrib>McIntire, Theresa M</creatorcontrib><title>Arabinogalactan from the Western larch tree: A new, purified and highly water-soluble polysaccharide-based protecting agent for maintaining precious metal nanoparticles in colloidal suspension</title><title>Journal of materials science</title><description>TEM and non-contact atomic force microscopy studies conducted on unprotected and protected platinum, palladium and silver nanoparticle suspensions provide evidence for the protective ability of a newly available polysaccharide known as arabinogalactan. The arabinogalactan offers advantages over conventionally used gum arabic in being highly water soluble, capable of being prepared in higher purity and not settling out insoluble material over time. Nanoparticle suspensions prepared in the presence of this protecting agent show a change in overall particle morphology and reduction in the necklace like aggregation typical of unprotected particles on the TEM grids. It is believed that the protective action exerted by the arabinogalactan on the metal nanoparticles arises out of its unique spheroidal structure adopted in aqueous solution which is thought to sequester individual metal particles by virtue of surface interactions between oxide functionalities on the colloid and hydroxyl groups on the arabinogalactan.</description><subject>Aqueous solutions</subject><subject>arabinogalactans</subject><subject>Atomic force microscopy</subject><subject>Chemistry</subject><subject>Colloidal state and disperse state</subject><subject>Colloids</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Gold</subject><subject>gum arabic</subject><subject>Hydroxyl groups</subject><subject>Larix occidentalis</subject><subject>Materials science</subject><subject>Metal particles</subject><subject>microscopy</subject><subject>Morphology</subject><subject>Nanoparticles</subject><subject>nanosilver</subject><subject>Palladium</subject><subject>Physical and chemical studies. Granulometry. Electrokinetic phenomena</subject><subject>Platinum</subject><subject>Polysaccharides</subject><subject>Silver</subject><subject>Spheroidal structure</subject><subject>surface interactions</subject><subject>transmission electron microscopy</subject><subject>trees</subject><subject>Water chemistry</subject><subject>Water purification</subject><issn>0022-2461</issn><issn>1573-4803</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2002</creationdate><recordtype>article</recordtype><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNpd0U-L1TAQAPAiCj5Xzx4NiHuymknaJm9vj8V_sOBBF49lmk7bLGlSk5TlfTs_mpHdk4dhYPJjmJlU1WvgH4AL-fF0BRykapUQoFT3pDpAq2TdaC6fVgfOhahF08Hz6kVKd5zzAuFQ_TlFHKwPMzo0GT2bYlhZXoj9opQpeuYwmoXlSHTFTszT_Xu27dFOlkaGfmSLnRd3ZvdYdJ2C2wdHbAvunNCYBaMdqR4wFb3FkMlk62eGM_nMphDZitbnEv-qWyRjw57YShkd8-jDhjFb4ygx65kJzgU7lqe0p418ssG_rJ5N6BK9eswX1e3nTz-vv9Y33798uz7d1EaCyLVRx5GOHU1y0M0wkWrbjrTRo2pGPXDVKDJDC6ITvNGEukU5CgVHMU4apAR5UV0-9C1b_N7LbfrVJkPOoacyci9Up7gSvMC3_8G7sEdfZuuF6DiAEkdV1LtHhcmgmyJ6Y1O_RbtiPPcgGw0tdMW9eXAThh7nWMztD8GhKz8Ix1Y38i-yyp60</recordid><startdate>20020201</startdate><enddate>20020201</enddate><creator>Mucalo, M. 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R ; Manley-Harris, Merilyn ; McIntire, Theresa M</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c312t-c79de96ef3b84bfe7556e8c8d74d8b0747ecb51262048ea85a3d27192df813313</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2002</creationdate><topic>Aqueous solutions</topic><topic>arabinogalactans</topic><topic>Atomic force microscopy</topic><topic>Chemistry</topic><topic>Colloidal state and disperse state</topic><topic>Colloids</topic><topic>Exact sciences and technology</topic><topic>General and physical chemistry</topic><topic>Gold</topic><topic>gum arabic</topic><topic>Hydroxyl groups</topic><topic>Larix occidentalis</topic><topic>Materials science</topic><topic>Metal particles</topic><topic>microscopy</topic><topic>Morphology</topic><topic>Nanoparticles</topic><topic>nanosilver</topic><topic>Palladium</topic><topic>Physical and chemical studies. Granulometry. Electrokinetic phenomena</topic><topic>Platinum</topic><topic>Polysaccharides</topic><topic>Silver</topic><topic>Spheroidal structure</topic><topic>surface interactions</topic><topic>transmission electron microscopy</topic><topic>trees</topic><topic>Water chemistry</topic><topic>Water purification</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Mucalo, M. R</creatorcontrib><creatorcontrib>Bullen, C. 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The arabinogalactan offers advantages over conventionally used gum arabic in being highly water soluble, capable of being prepared in higher purity and not settling out insoluble material over time. Nanoparticle suspensions prepared in the presence of this protecting agent show a change in overall particle morphology and reduction in the necklace like aggregation typical of unprotected particles on the TEM grids. It is believed that the protective action exerted by the arabinogalactan on the metal nanoparticles arises out of its unique spheroidal structure adopted in aqueous solution which is thought to sequester individual metal particles by virtue of surface interactions between oxide functionalities on the colloid and hydroxyl groups on the arabinogalactan.</abstract><cop>Heidelberg</cop><pub>Kluwer Academic Publishers</pub><doi>10.1023/A:1013757221776</doi><tpages>12</tpages></addata></record> |
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| subjects | Aqueous solutions arabinogalactans Atomic force microscopy Chemistry Colloidal state and disperse state Colloids Exact sciences and technology General and physical chemistry Gold gum arabic Hydroxyl groups Larix occidentalis Materials science Metal particles microscopy Morphology Nanoparticles nanosilver Palladium Physical and chemical studies. Granulometry. Electrokinetic phenomena Platinum Polysaccharides Silver Spheroidal structure surface interactions transmission electron microscopy trees Water chemistry Water purification |
| title | Arabinogalactan from the Western larch tree: A new, purified and highly water-soluble polysaccharide-based protecting agent for maintaining precious metal nanoparticles in colloidal suspension |
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