Shen Ting, Zhao Zhiyong, Zhong Qishi, Qin Yujun, Zhang Pu, Guo Zhi-Xin
Department of Chemistry, Renmin University of China Beijing 100872 China
RSC Adv. 2019 Apr 29;9(23):13042-13047. doi: 10.1039/c9ra00516a. eCollection 2019 Apr 25.
In this paper, one-step preparation of graphene/gold nanoparticle hydrogel film through the hydrothermal method is reported. The hydrogel film could be formed on a glass substrate under hydrothermal conditions, and upon freeze-drying, the aerogel film of 40 μm thickness with satisfying flexibility and strength is obtained. The aerogel composite film is characterized by scanning/transmission electron microscopy, X-ray diffraction, Raman spectroscopy and X-ray photoelectron spectroscopy. Moreover, the aerogel film is directly used as the electrochemical electrode for sensing HO, and exhibits good performance with a broad linear range, low detection limit and excellent selectivity. This work provides a route for the fabrication of graphene film material with wide potential in various aspects.
本文报道了通过水热法一步制备石墨烯/金纳米颗粒水凝胶薄膜。在水热条件下，水凝胶薄膜可在玻璃基板上形成，经冷冻干燥后，可获得厚度为40μm、具有良好柔韧性和强度的气凝胶薄膜。通过扫描/透射电子显微镜、X射线衍射、拉曼光谱和X射线光电子能谱对气凝胶复合薄膜进行了表征。此外，该气凝胶薄膜直接用作检测HO的电化学电极，具有线性范围宽、检测限低和选择性好等优异性能。这项工作为制备在各个方面具有广泛潜力的石墨烯薄膜材料提供了一条途径。
