改性前后Ti₃C₂的羟基峰分别位于3430和3411 cm^-1，1641,1627和 553 cm^-1处的特征峰对应了未改性Ti₃C₂的稳定骨架结构_。在GPS改性后，环氧集团在1238 cm^-1出现了新的特征峰，印证了改性的成功进行。

To prove the epoxy functionalization of Ti₃C₂, FT-IR spectrum was recorded for U-Ti₃C₂ and E-Ti₃C₂ samples. As shown in the Figure, the OH groups could be revealed from the broad peaks at around 3430 and 3411 cm^-1 for U-Ti₃C₂ and E-Ti₃C₂, respectively. The peaks at around 1641, 1627 and 553 cm^-1 demonstrated the stable skeleton structure of U-Ti₃C₂ . After modification of Ti₃C₂ with GPS, a new peak at 1238 cm^-1, attributing to the stretching vibration of epoxide group, appeared. The above results confirmed that GPS successfully modified Ti₃C₂.