| Preparation and characterization of noble metal nanocolloids by silk fibroin in situ reduction |
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| 引用本文： | 陈文兴,吴雯,陈海相,沈之荃. Preparation and characterization of noble metal nanocolloids by silk fibroin in situ reduction[J]. 中国科学B辑(英文版), 2003, 46(4) |
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| 作者姓名： | 陈文兴 吴雯 陈海相 沈之荃 |
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| 作者单位： | College of Materials and Textiles，Zhejiang Institute of Science and Technology，Hangzhou 310033，China，College of Materials and Textiles，Zhejiang Institute of Science and Technology，Hangzhou 310033，China，College of Materials and Textiles，Zhejiang Institute of Science and Technology，Hangzhou 310033，China，Department of Polymer Science and Engineering，Zhejiang University，Hangzhou 310027，China |
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| 基金项目： | 浙江省自然科学基金 |
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| 摘 要： | Silk fibroin (SF) is a natural protein from silkworm. It represents Chinas resplendent civili-zation as dress materials in the past 5000 a. To this day, the silk output in China is about 90000 tons per year, which is about 70% of the world overall output. In the past decade, it has been found that silk fibroin has special properties for being used as healthy foods, cosmetics, enzyme immobilizing materials, cell culture medium, biosensor, artificial skin, artificial muscle, perme-able membran…
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Preparation and characterization of noble metal nanocolloids by silk fibroin in situ reduction |
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| CHEN Wenxing ,WU Wen ,CHEN Haixiang , SHEN Zhiquan ) . College of Materials and Textiles,Zhejiang Institute of Science and Technology,Hangzhou ,China. Preparation and characterization of noble metal nanocolloids by silk fibroin in situ reduction[J]. Science in China(Chemistry), 2003, 46(4) |
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| Authors: | CHEN Wenxing WU Wen CHEN Haixiang & SHEN Zhiquan ) . College of Materials Textiles Zhejiang Institute of Science Technology Hangzhou China |
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| Affiliation: | 1. College of Materials and Textiles, Zhejiang Institute of Science and Technology, Hangzhou 310033, China
2. Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | Noble metal nanocolloids are prepared from their precursors by in situ reduction of a silk fibroin solution at room temperature without any reducing agent. The mechanism, the effects of pH and the molar ratio of the reactants on the reduction reaction are studied by UV-Vis spectros-copy. The structure of the colloids is characterized by FT-IR, TEM and AFM. According to the TEM images, the gold-silk fibroin colloid is a nanostructured bioconjugate with novel core-shell, while the silver-silk fibroin colloid tends to be congregated as clusters having more than ten nanoparti-cles of silver-silk fibroin. The gold colloid is highly dispersed and stable while the silver colloid is less dispersed and stable than the gold colloid. |
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| Keywords: | silk fibroin in situ reduction gold colloid silver colloid. |
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