We propose a facile method to synthesize Janus nanomaterials by seed interfacial sol-gel process against a polystyrene( PS) hollow sphere using three precursor silanes,( 3-aminopropyl) triethoxysilane( APTES),methacryloxy propyl trimethoxyl silane( MPS) and tetraethyl orthosilicate( TEOS). The sol-gel process starts from the exterior surface of the seed sphere. Janus nanomaterials were formed in situ onto the seed sphere surface after a self-organized sol-gel process,which possess 3-methacryloxypropyl- and ...