College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
Phys Chem Chem Phys. 2013 Feb 28;15(8):2793-9. doi: 10.1039/c2cp44270a. Epub 2013 Jan 21.
A novel composite composed of TiSi(2), graphene and RuO(2) nanoparticles was fabricated by a one-pot deposition method using reduced graphene oxide (RGO) as a supporting matrix and RuCl(3) as the RuO(2) precursor. The resulting RuO(2)/TiSi(2)/RGO composite was characterized by scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectra, X-ray photoelectron spectroscopy, UV-vis diffuse reflectance spectra, photoelectrical response and electrochemical impedance spectra. The results indicated that the three components in the composite were effectively contacted, thus facilitating the photogenerated charges transfer and separation through multiple routes. By using the composite as a photocatalyst for visible-light water splitting the average hydrogen production rate could reach 97.5 μmol h(-1) g(-1), which is higher than that from RuO(2)/TiSi(2) and pure TiSi(2) systems under the same conditions.
采用一步沉积法制备了一种由 TiSi(2)、石墨烯和 RuO(2)纳米粒子组成的新型复合材料，以还原氧化石墨烯 (RGO) 作为支撑基体，RuCl(3) 作为 RuO(2) 的前驱体。通过扫描电子显微镜、X 射线衍射、傅里叶变换红外光谱、X 射线光电子能谱、紫外-可见漫反射光谱、光电响应和电化学阻抗谱对所得的 RuO(2)/TiSi(2)/RGO 复合材料进行了表征。结果表明，复合材料中的三种成分有效接触，从而通过多种途径促进光生电荷的转移和分离。将该复合材料用作可见光分解水的光催化剂时，平均产氢率可达 97.5 μmol h(-1) g(-1)，在相同条件下高于 RuO(2)/TiSi(2) 和纯 TiSi(2) 体系的产氢率。
