石墨烯纳米复合材料合成及其在光催化氧化降解和还原制备氢能中应用的研究进展∗

摘要

石墨烯因独特的二维纳米结构和优良的物理化学性能已经成为近年来纳米材料研究的热点领域之一。作为一类新型的碳基材料，石墨烯纳米复合材料已经广泛地应用于多相光催化的诸多方面。对石墨烯纳米复合材料的制备、光催化还原制氢原理、光催化氧化染料降解原理、光催化活性的主要影响因素、石墨烯纳米复合材料在光催化氧化污染物降解、光催化还原制氢以及CO2还原制甲醇中的应用等领域的最新研究进展进行了较系统的综述，对一些新的光催化反应以及反应机理进行了归纳总结，提出了石墨烯纳米复合材料存在的问题以及未来的发展方向。%In recent years,graphene (GR)has become one of the hottest research fields of nanomaterials due to its unique two-dimensional nanostructure,excellent physical and chemical properties.As a new kind of carbon-based material,the GR nanocomposites have been extensively used in various aspects of heterogeneous photocatalysis.In the paper,the synthesis of GR nanocomposite is systematically summarized.The principles of hydrogen production and dye degradation through photocatalytic reduction or oxidation processes are presented.The latest advances including the main influence factors of photocatalytic activities,waste decomposition,H2 evolution as well as CO2 reduction for preparation of CH3 OH are comprehensively reviewed.Some novel reactions and mechanisms are reported,and the fu-ture development prospects are proposed.