異丙醇官能基化PTI以一系列溫度為變數、透過溶劑熱反應方式成功製備。根據分析結果，經過官能化的程序後，主結構PTI依舊保持沒有遭受破壞。而從NMR跟XPS的分析結果得知，在經過異丙醇官能基化的過程後，額外的含氧官能基團(-C=O or –COOH/-COOR)生成於PTI表面，可做為活性點位於PTI表面。在亞甲藍光降解實驗中，120度下的氧化樣品(IPA-120)展現最好的光降解成效。這主要歸因於IPA-120樣品含有最適當量的含氧官能基團生成於材料表面，提供更好的電荷傳輸路徑且抑制電子電動對的再結合率，顯著的展現在PL的分析結果上面，同時地，更寬的吸收範為跟比表面積的提升同步的有效貢獻於光催化的表現上面，導致其相較於PTI擁有大約2.5倍的光降解提升成效。

Isopropanol functionalization PTI serious via solvothermal approach under various temperature conditions were successfully fabricated. According to the characterization results, PTI structure was still maintained after surface functionalization. Additional oxygen related functional groups (-C=O or –COOH/-COOR) arose from IPA functionalization process can be determined via 13C SSNMR and XPS results, which can serve as active sites on the PTI surface. Based on the MB photodegradation measurement, IPA-120 exhibited maximum enhancement on photocatalytic ability. This might be primary attributed to the optimize oxygen related functional groups on the IPA-120 samples can perform better charge separation and suppressed the recombination rate, which can be obviously observed on PL analysis. Simultaneously, the light absorption ability extended and specific surface area enhancement also synergistically contributed to the photocatalytic performance, which give rise to approximately 2.5 times higher degradation rate compare with pristine PTI.

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