光催化
聚丙烯
X射线光电子能谱
材料科学
降级(电信)
碳化
化学工程
聚合物
结晶度
傅里叶变换红外光谱
碳纤维
无定形固体
纳米孔
催化作用
化学
纳米技术
扫描电子显微镜
复合材料
复合数
有机化学
电信
计算机科学
工程类
作者
Md Saifuddin,Yasaman Ghaffari,Seon Yeong Park,Chang Gyun Kim
标识
DOI:10.1016/j.envres.2022.113422
摘要
The degradation of plastics, especially polypropylene (PP), is difficult since it is the most hydrophobic polymer. Photocatalytic degradation of PP films has been reported to be one of the most efficient degradation techniques. However, it is still insignificant to employ it in field applications. In this study, TiO2 nanoparticles supported on amorphous carbon with nanoporosity (TiO2@NC) are used as a photocatalyst to degrade macro-sized co-axially oriented PP globules under the influence of UV-C irradiation. Surface characterization such as SEM, ATR-FTIR, and XPS of the PP globules was performed. The SEM images distinctly showed the surface degradation phenomenon. Interestingly, the ATR-FTIR spectra demonstrated a significant rise in the band intensity in the -OH radical region and fairly in the CO region as well, with the increase in the photocatalytic time. Surprisingly, in the XPS spectra, the intensity of C-1s spectra kept on falling, and the intensity of O-1s spectra kept on rising with the increase in the photocatalytic time. The higher surface area due to nanoporosity of TiO2@NC enhanced the photocatalytic degradation of PP globules than previously reported studies. TiO2@NC seems to be a potential catalyst for the degradation of different types of polymers.
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