金属纳米颗粒极不稳定,易于聚集,导致其尺寸变大和形貌改变,影响催化性能,纳米颗粒需要负载在高比表面积的载体上或在稳定剂保护条件下进行反应。纳米颗粒所处环境,如载体的性质以及稳定剂的类型对纳米催化剂的表面电子结构具有重要影响,因而对其催化性能有重要的影响。 Metal nanoparticles are extremely unstable and easily aggregated, leading to their size becoming larger and morphological changes affecting the catalytic performance. The nanoparticles need to be supported on a carrier with a high specific surface or under the protection of stabilizers. The environment in which the nanoparticles are located, such as the nature of the carrier and the type of stabilizer, have an important influence on the surface electronic structure of the nanocatalyst, and thus have an important effect on the catalytic performance.