Graphene oxide (GO) enhanced amine-functionalized titanium metal organic framework (NH₂-MIL-125(Ti)) was fabricated via a facile microwave solvothermal process by using GO, C₁₂H₂₈O₄Ti, and 2-aminoterephthalic acid as precursors. Under the microwave irradiation, the surface of GO could act as the microwave antenna for fast absorbing microwave energy with the formation of hot-spots on GO (hot-spots effect). These hot-spots allowed both the well-crystallization of NH₂-MIL-125(Ti) crystals with a highly dispersity on the surface of GO and the strong interaction between NH₂-MIL-125(Ti) and GO, supported by various characterization such as XRD, Raman, UV–vis and so on. Benefiting from the strong interaction and high electronic conductivity of GO, such GO/ NH₂-MIL-125(Ti) hybrid exhibited a greatly enhanced metal organic framework crystallinity, visible-light absorption, photocurrent intensity, electron carrier density and a lower photo-generated electron-hole recombination rate, compared to the pure NH₂-MIL-125(Ti). Therefore, the as-obtained hybrid system was proved highly efficient for photocatalytic oxidation of gaseous pollutants, such as nitric oxide (NO_x) and acetaldehyde with long durability, under visible light (λ > 420 nm) irradiation.

以GO，C ₁₂ H ₂₈ O ₄ Ti和2-氨基对苯二甲酸为原料，通过简便的微波溶剂热法制备了氧化石墨烯（GO）增强的胺官能化钛金属有机骨架（NH ₂ -MIL-125（Ti））。前体。在微波辐射下，GO的表面可以作为微波天线，通过在GO上形成热点（热点效应）来快速吸收微波能量。这些热点使GO ₂表面上具有高度分散性的NH ₂ -MIL-125（Ti）晶体能够很好地结晶，并且NH ₂之间有很强的相互作用-MIL-125（Ti）和GO，得到各种表征的支持，例如XRD，拉曼，UV-vis等。得益于GO的强相互作用和高电子电导率，此类GO / NH ₂ -MIL-125（Ti）杂化物显示出大大提高的金属有机骨架结晶度，可见光吸收率，光电流强度，电子载流子密度和较低的光电子强度。与纯NH ₂ -MIL-125（Ti）相比，产生的电子-空穴复合率更高。因此，证明了所获得的混合系统在可见光（λ> 420 nm）辐照下具有很长的耐久性，能够高效催化光催化氧化一氧化氮（NO _x）和乙醛等气态污染物。