Enhanced photocatalytic activity of PTCDI-C60 via π–π interaction
Enhanced photocatalytic activity of PTCDI-C60 via π–π interaction
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DOI：
10.1016/j.apcatb.2018.07.043
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发表时间：
2018-12
期刊：
影响因子：
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通讯作者：
Yunxia Wei;M. Ma;Wenlu Li;Jun Yang;H. Miao;Zijian Zhang;Yongfa Zhu
中科院分区：
文献类型：
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作者：
Yunxia Wei;M. Ma;Wenlu Li;Jun Yang;H. Miao;Zijian Zhang;Yongfa Zhu
自组装PTCDI的π-π堆积和自组装PTCDI与C60之间的π-π相互作用导致光生载流子的快速转移和减少载流子复合。π-π相互作用降低了价带的位置，使带隙变窄，从而导致更强的氧化还原能力和更宽的光谱响应。有机光催化剂PTCDI-C60不仅能以0.216 h-1的速率降解苯酚，是纯PTCDI的8.24倍，而且还能以22.5 μmol g-1h-1的速率产氧。此外，C60的存在稳定了复合物，减少了负电荷的积累。高催化活性可潜在地用于环境和能源应用领域。
The π–π stacking of self-assembled PTCDI and π–π interactions between self-assembled PTCDI and C60result in fast transfer of the photogenerated carriers and reduced carrier recombination. The π–π interaction lowers the position of valence band and narrows the band gap, thus leading to a stronger redox ability and a broad spectral response. The organic photocatalyst PTCDI-C60can not only degrading phenol at a rate of 0.216 h−1, which is 8.24 times higher than that of pure PTCDI, but also producing oxygen at a rate of 22.5 μmol g−1h−1. Moreover, the presence of C60stabilizes the composite to decrease the accumulation of negative charge. The high catalytic activity can potentially be utilized in the fields of environmental and energy applications.