The CD@Fe₃O₄ photocatalysts were synthesized via hydrothermal synthesis method. The CD@Fe₃O₄ particles were synthesized using Fe₃O₄ as the core and using citric acid and ethylenediamine as a raw material, which were heated to 200 °C for 4 h. The synthesized fluorescent CD@Fe₃O₄ was characterized by HR-TEM, IR and fluorescence spectrophotometer. The HR-TEM results showed CD and Fe₃O₄ nanoparticles were uniform, mono-dispersed sphere or hemisphere particles with an average size of approximately 3 nm, and particle size of CD@Fe₃O₄ were mainly in range of 20–30 nm. XRD results showed the nanoparticles mainly belonged to Fe₃O₄ and CD@Fe₃O₄, which made recycling our photocatalysts possible due to the magnetic performance. On daylight lamp, the half-life of hexaconazole in CD@Fe₃O₄ photocatalysts was about 4 days, and it is lower than half-life (over 100 days) of hexaconazole without CD@Fe₃O₄ photocatalysts.

CD@Fe ₃ O ₄光催化剂采用水热合成法合成。CD@Fe ₃ O ₄颗粒以Fe ₃ O ₄为核心，以柠檬酸和乙二胺为原料，加热至200 ℃反应4 h。合成的荧光CD@Fe ₃ O ₄用HR-TEM、IR和荧光分光光度计进行了表征。HR-TEM结果表明CD和Fe ₃ O ₄纳米粒子为均匀的、单分散的球状或半球状粒子，平均粒径约为3 nm，粒径为CD@Fe ₃ O ₄主要在 20-30 nm 范围内。XRD结果表明纳米粒子主要属于Fe ₃ O ₄和CD@Fe ₃ O ₄，这使得我们的光催化剂由于磁性能的回收成为可能。在日光灯下，己康唑在CD@Fe ₃ O _{4光催化剂中的半衰期约为4天，低于没有CD@Fe 3} O ₄光催化剂的己康唑的半衰期（超过100天）。