| 王晓娟,张浪,魏传晚,林英武.纳米金功能水凝胶的制备及其催化还原活性研究[J].南华大学学报(自然科学版),2023,(4):67~73.[WANG Xiaojuan,ZHANG Lang,WEI Chuanwan,LIN Yingwu.Synthesis and Catalytic Reduction Activity of Functional Hydrogel Containing Au nanoparticles[J].Journal of University of South China(Science and Technology),2023,(4):67~73.] |
| 纳米金功能水凝胶的制备及其催化还原活性研究 |
| Synthesis and Catalytic Reduction Activity of Functional Hydrogel Containing Au nanoparticles |
| 投稿时间：2023-02-16 |
| DOI： |
| 中文关键词: 甲基橙 金属水凝胶 金纳米粒子 染料催化 |
| 英文关键词:methyl orange metallohydrogel gold nanoparticles dyes catalyze |
| 基金项目:国家自然科学基金项目(21807058);湖南省教育厅重点基金项目(21A0279);南华大学博士启动基金项目(2014XQD32) |
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| 中文摘要: |
| 设计并合成了一种酪氨酸衍生物,既可以作为凝胶因子,又可以充当还原剂。在四氯金酸存在下,酪氨酸衍生物可以在室温下组装形成金属水凝胶,并且在凝胶中原位形成金纳米粒子。该凝胶的形成条件温和,只需要简单的超声处理,不需要额外加入其他还原剂和稳定剂。通过X射线光电子能谱、X射线衍射、透射电子显微镜、流变等测试方法,对形成的凝胶进行了表征,实验结果证实金纳米粒子均匀地分布在凝胶体系中。在硼氢化钠存在下,金属水凝胶对甲基橙具有优越的催化还原反应活性。通过准一阶动力学拟合,发现其速率常数值(0.2±0.1) s－1高于文献中报道的大多数催化剂。 |
| 英文摘要: |
| In this study, a tyrosine derivative compound was designed and synthesized, which can be used as both a gelator and a reductant. This compound and tetrachloroauric acid can assemble to form a metallohydrogel containing gold nanoparticles formed in situ under room temperature. The formation of this gel is under mild conditions and only requires simple ultrasonic treatment without the addition of other reducing agents and stabilizers. By charaterizations using X-ray photoelectron spectroscopy, X-ray diffraction, transmission electron microscopy and rheology analysis, the results showed that the gold nanoparticles were evenly distributed in gel. The experimental results confirmed that gold nanoparticles were evenly distributed in the gel system. In the presence of sodium borohydride, the metallohydrogel has excellent catalytic reduction activity for methyl orange. Through quasi-first-order kinetic fitting, it was found that the rate constant value (0.2±0.1) s－1 is higher than that of most catalysts reported in the literature. |
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