Utilizing “wet chemistry”approaches,hydrosilylation was optimized by the etching system,the way of degassing dissolved oxygen,separation method.Silicon microparticles,silicon nanoparticles,silicon quantum dots were successfully grafted with 1-alkenes.FT-IR and SEM were shown that the functionalization of silicon particles with 1-alkenes yielded alkyl-terminated particles via Si-C bond,compared with unfunctionalized sili-con particles,they were hydrophobic and had higher kinetic stability,oxidation resistance,which could form a stable dispersion in organic solvents.It was worth mentioning that,the fluorescence properties of functionalized silicon quantum dots had been greatly improved,which could be used in the field of optoelectronics.%通过湿化学方法，利用硅氢化反应，通过对刻蚀体系、脱氧方式、刻蚀后硅粒子的分离方法等工艺的优化，成功地实现了微米硅、纳米硅及硅量子点的表面烃基改性。傅里叶变换红外光谱及扫描电子显微镜测试结果表明，硅粒子的表面是通过 Si-C 键的连接方式实现了烃基改性。与改性前相比，改性后的硅粒子具有显著提升的抗氧化性和抗团簇能力，能够在有机溶剂中形成稳定的分散体系。值得一提的是，与未经改性的硅量子点相比，经烃基改性后的硅量子点的荧光发射性能有了大幅提高，有望应用于光电领域。
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