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논문 기본 정보

자료유형
학위논문
저자정보

김지수 (부산대학교, 부산대학교 대학원)

지도교수
김일
발행연도
2022
저작권
부산대학교 논문은 저작권에 의해 보호받습니다.

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이 논문의 연구 히스토리 (3)

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In this work, we present a novel synthesis of the silver nanoparticles decorated on the hollow porous organic nanospheres (Ag@COOH-HPONs) by simple combination of the Lewis acid?base interaction mediated self-assembly and followed impregnation reduction method, in which the HPONs-OH were prepared via a Friedel-Crafts reaction by using 1,4-benzenedimethanol as monomer. Then, the HPONsOH is modified to convert the OH group to the COOH group. Due to the abundant carboxyl groups on the surface of the HPONs-COOH, the silver nanoparticles can be uniformly deposited on the HPONsCOOH to prepare Ag@HPONs-COOH through electrostatic(ion?dipole) interactions with [Ag(NH3)]2+ following by an in-situ reduction of PVP(poly (vinyl pyrrolidone)). The prepared Ag@HPONs-COOH show the excellent catalytic ability for the dye degradation. This approach on fabricating the metal decorated porous organic polymers may suggest guidance as the new type of the morphologiccontrolled catalysts for practical applications.

목차

1. INTRODUCTION ………………………………………………………………………8
2. EXPERIMENTA …………………………………………………………………………11
2.1. Materials………………………………………………………………………………11
2.2. Synthesis of HPONs…………………………………………………………………11
2.3. Carboxylation of hydroxy groups on the surface ……………………………12
2.4. Catalyst preparation (Ag@HPONs-COOH nanocomposite).………………12
2.5. Catalytic activity on methylene blue reduction ………………………………12
2.6. Characterization ……………………………………………………………………13
3. RESULTS AND DISCUSSION …………………………………………………………14
3.1. Preparation process of Ag@HPONs-COOH nanocomposite ………………14
3.2. XRD patterns and FTIR spectra……………………………………………………14
3.3. XPS analysis …………………………………………………………………………15
3.4. Thermal properties of the Ag@HPONs-COOH .......................................16
3.5. BET surface area measurement ............................................................17
3.6. Catalytic activity of the Ag@HPONs-COOH nanocomposite ………………17
4. CONCLUSIONS …………………………………………………………………………19
5. REFFERENCES……………………………………………………………………………20

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