使用扫描电镜对喷雾干燥法得到氧化石墨包裹生物基多孔硅结构进行表征。制备的负载BTA的GO@生物基多孔硅核壳结构缓释容器的扫描电镜图，缓释容器呈球状，GO包覆在多孔硅的表面，形成核壳结构。

The structure of biobased polyporous silicon coated with graphite oxide obtained by spray drying method was characterized by scanning electron microscopy. Scanning electron microscopy (SEM) image of the prepared Go@ bio-based multi-porous silicon core-shell slow-release vessel loaded with BTA. The slow-release vessel is spherical, and GO is coated on the surface of porous silicon to form a core-shell structure.