Poly(o-phenylenediamine) submicrosphere-supported gold nanocatalysts : synthesis, characterization, and application in selective oxidation of benzyl alcohol
A facile solution route was proposed for the successful synthesis of uniform poly(o-phenylenediamine) (PoPD) submicrospheres with an average diameter of 700 nm. Utilizing the reactivity of dedoped PoPD submicrospheres for gold salt HAuCl4, gold nanoparticles can be synthesized in the presence of PoP...
| Publié dans: | Langmuir : the ACS journal of surfaces and colloids. - 1985. - 25(2009), 18 vom: 15. Sept., Seite 11054-60 |
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| Auteur principal: | |
| Autres auteurs: | , , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2009
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| Accès à la collection: | Langmuir : the ACS journal of surfaces and colloids |
| Sujets: | Journal Article |
| Résumé: | A facile solution route was proposed for the successful synthesis of uniform poly(o-phenylenediamine) (PoPD) submicrospheres with an average diameter of 700 nm. Utilizing the reactivity of dedoped PoPD submicrospheres for gold salt HAuCl4, gold nanoparticles can be synthesized in the presence of PoPD without additional reductant for HAuCl4. Furthermore, PoPD submicrospheres with abundant amino groups and pi electrons in benzene rings on their surfaces can significantly stabilize gold nanoparticles, which will lead to the formation of PoPD submicrosphere-supported gold nanoparticles. Reaction conditions, such as addition of poly(vinylpyrrolidone) and concentration of HAuCl4, were found to affect the size of gold nanoparticles. Products were characterized by Fourier-transform infrared (FT-IR) and X-ray diffraction (XRD) spectroscopies. The synthesized PoPD submicrosphere-supported gold nanoparticles with different size were used to evaluate their catalytic performances for benzyl alcohol. Results revealed that PoPD submicrosphere-supported gold nanoparticles showed high yield and selectivity for benzyl alcohol to aldehyde conducted under air and in water media. The factors, such as catalyst size and amount, solvent, temperature, alkali type, and reaction time, were all systematically investigated to elucidate their effects on the yield and selectivity of catalytic benzyl alcohol reactions |
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| Description: | Date Completed 04.12.2009 Date Revised 08.09.2009 published: Print Citation Status PubMed-not-MEDLINE |
| ISSN: | 1520-5827 |
| DOI: | 10.1021/la901373t |