文章信息/Info

Title:

Preparation and characterization of sandwich-like Ag-C-Ag nanocomposites

作者:

郝亞敏1; 2; 楊維佳1; 2; 閆翎鵬1; 2; 楊永珍1; 2; 劉旭光1; 3; 許并社1; 2

1. 新材料界面科學與工程教育部重點實驗室（太原理工大學）；山西太原，030024 2. 太原理工大學新材料工程技術研究中心；山西太原，030024 3. 太原理工大學化學化工學院；山西太原，030024

Author(s):

HAO Yaming 1;  2;  YANG Weijia 1; 2;  YAN Lingpeng 1;  2;  YANG Yongzhen 1;  2;  LIU Xuguang 1;  3;  XU Bingshe 1;  2

(1. Key Laboratory of Interface Science and Engineering in Advanced Materials (Taiyuan University of Technology), Ministry of Education, Taiyuan 030024, China) (2. Research Center on Advanced Materials Science and Technology, Taiyuan University of Technology, Taiyuan 030024, China) (3. College of Chemistry and Chemical Engineering, Taiyuan University of Technology,Taiyuan 030024, China)

關鍵詞:

水熱法; 碳微球; 銀納米粒子; 包覆; 負載

DOI:

10.7502/j.issn.1674-3962.2015.05.06

文獻標志碼:

A

摘要:

本文采用一步水熱法，以葡萄糖為碳源、硝酸銀為銀源，在水熱溫度190℃的條件下制備出三明治結構的銀碳復合材料，該材料同時實現(xiàn)了碳微球對銀納米粒子的包覆與負載。利用場發(fā)射掃描電子顯微鏡、透射電子顯微鏡、傅立葉紅外光譜儀、X-射線衍射儀及熱重分析儀等檢測手段表征了產(chǎn)物的形貌和結構特征。結果表明：在水熱條件下碳微球同時實現(xiàn)了對銀納米粒子的包覆與負載；所得三明治結構復合物表面含有大量含氧官能團且表面顯負電性；熱重分析表明復合物的含銀量約為5.51%。抗菌實驗分析表明樣品對大腸桿菌和金黃色葡萄球菌具有良好的抗菌性，可以作為抗菌材料。

Abstract:

Silver nanoparticles were encapsulated in and loaded on a carbonaceous shell under hydrothermal condition at 190℃. In this one-pot synthesis, glucose was used as the reducing agent to react with Ag+, and also served as the source of carbonaceous shells. The morphologies and microstructures of the products were characterized by field emission scanning electron microscopy, transmission electron microscopy, Fourier transformation infrared spectrometry, X-ray diffraction and thermogravimetry. These results indicate that the products are negatively charged and there are lots of functional groups on the surface of the products. The silver content of products is about 5.51%. Moreover, the sandwich-like Ag-C-Ag nanocomposites showed strong antibacterial activity against both Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus.