Ordered porous materials are attracting enormous attention due to their uniform pore structures, particularly the magnetic photonic crystal microspheres (PCMs) which not only possess unique photonic crystal structure but also can achieve separation easily based on magnet. Here, a two-phase microfluidic self-assembly synthetic system was established simply and employed for the preparation of three dimensional PCMs (3DPCMs) by using the emulsion droplet approach. One phase (dispersed phase) was an aqueous emulsion containing Fe₃O₄, silica (SiO₂) and polystyrene (PS) nanoparticles; another phase (continuous phase) was pure silicone oil. The droplets were formed by introducing the dispersed phase into the continuous phase through a tee valve. By heating the droplets, the water would evaporate and the nanoparticles would finally assemble into solid microspheres, which could be changed into macroporous 3DPCMs after removal of the PS nanoparticles by calcination. The contents and particle sizes of Fe₃O₄, SiO₂ and PS nanoparticles in the dispersed phase were investigated in detail and optimized to prepare macroporous magnetic 3DPCMs with high quality. The morphologies, surface crystal structure, magnetic property, particle size distribution, specific surface area and pore size of the macroporous magnetic 3DPCMs were characterized. The expected 3DPCM displayed regular and uniform photonic crystal structure, narrow particle size distribution and strong magnetic property. The macroporous magnetic 3DPCMs grafted with vomitoxin (DON)-antibodies could be applied for selective enrichment of DON in real samples.

有序的多孔材料由于其均匀的孔结构而引起了极大的关注，特别是磁性光子晶体微球（PCM）不仅具有独特的光子晶体结构，而且可以轻松实现基于磁体的分离。在此，简单地建立了两相微流体自组装合成系统，并将其用于通过乳液液滴法制备三维PCM（3DPCM）。一相（分散相）是含有Fe ₃ O ₄，二氧化硅（SiO ₂）和聚苯乙烯（PS）纳米粒子；另一相（连续相）是纯硅油。液滴是通过三通阀将分散相引入连续相而形成的。通过加热液滴，水将蒸发，纳米粒子最终将组装成固体微球，在通过煅烧除去PS纳米粒子后，可将其变成大孔3DPCM。Fe ₃ O ₄，SiO ₂的含量和粒径详细研究和优化了分散相中的PS和PS纳米颗粒，以制备高质量的大孔磁性3DPCM。表征了大孔磁性3DPCM的形貌，表面晶体结构，磁性，粒度分布，比表面积和孔径。预期的3DPCM将显示规则且均匀的光子晶体结构，窄的粒度分布和强大的磁性。嫁接了呕吐毒素（DON）抗体的大孔磁性3DPCM可用于真实样品中DON的选择性富集。