润色We believe that Sulfapyridine can be detected mainly in the following two points First MIL-101 Fe has a large number of pores and surface Active site which can adsorb Sulfapyridine molecules to its

We propose that Sulfapyridine can be detected primarily through two mechanisms. Firstly, the MIL-101 (Fe) material possesses numerous pores and active sites on its surface, allowing for the physical adsorption of Sulfapyridine molecules. This type of adsorption is non-specific and is mainly facilitated by forces such as Van der Waals interactions, electrostatic interactions, and hydrogen bonding. Secondly, a chemical bond can be formed between gold nanoparticles and Sulfapyridine molecules. Gold nanoparticles have a high affinity for electrons and possess an active surface, enabling the formation of gold-nitrogen bonds with nitrogen atoms in Sulfapyridine. Additionally, the surface of gold nanoparticles contains abundant oxide species that can form gold-oxygen bonds with oxygen atoms in Sulfapyridine. These two modes of action work in synergy to effectively adsorb Sulfapyridine molecules onto the Au/MIL-101 (Fe) surface