화학공학소재연구정보센터
학회 한국고분자학회
학술대회 2012년 가을 (10/11 ~ 10/12, 창원컨벤션센터)
권호 37권 2호
발표분야 고분자합성
제목 Multi-amine Functionalized Hydrogel Based Reducer-Free Synthesis of Noble Metal Nanoparticles for Highly Active and Recyclable Catalysis
초록 This paper describes a new and one-pot protocol for mass–producible synthesis of the poly(ethylene oxide propylphosphonamidate) (PEOPPA) hydrogel containing plenty of amine/amino groups in structures. Such hydrogel has been used as a template and reducer for the synthesis of a series of noble metal nanoparticles (Au, Ag, Pd, Pt and Ru NPs) in the absence of any other reducers. The metal nanoparticle–impregnated hydrogels used as catalysts are reusable in reducing various nitroaromatics by sodium borohydride in aqueous media, and the reaction rate constants at 10, 30 and 50 °C and the activation energies with other activation parameters were calculated. The activation energy for the reduction of 2,6–dinitrophenol, 2,4–dinitrophenol, 4–nitrophenol and 2,4,6-trinitrophenol catalyzed by PEOPPA hydrogel supported AuNPs (HS–AuNP) is 35.13, 29.08, 22.03 and 32.01 kJmol–1, respectively.
저자 장리동1, 김일2, 정수단3, 강동은1, 김민희2
소속 1부산대, 2고분자공학과, 3합성고분자생물접합 하이브리드재료산업단
키워드 Hydrogel; Recyclable catalyst; Reduction of nitroaromatics; Metal nanoparticles
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