π–π Interaction between self-assembled perylene diimide and 3D graphene for excellent visible-light photocatalytic activity

By Jun Yang, H. Miao, Yunxia Wei, Wenlu Li, Yongfa Zhu. Applied Catalysis B: Environmental, 2019

172 citations recorded by the source corpus.

Abstract A three-dimensional (3D) graphene/self-assembled perylene imide (rGO/PDI) aerogel composite has been successfully constructed via a simple low-temperature hydrothermal method in this work. The 3D rGO/PDI composite exhibited superior visible-light photocatalytic performance. The removal rate was respectively 2.46 times and 3.33 times higher than that of PDI in static and dynamic catalytic systems. The satisfactory activity is mainly attributed to the more effective separation of electron–hole pairs. To be specific, the self-assembled PDI nanofibers and graphene are effectively combined via non-covalent π-π interaction. The π-π interaction enhances the long-range π-electrons delocalization and electron coupling effects, which is beneficial for the carrier mobility and the separation of electron–hole pairs. Meanwhile, the three-dimensional structure of graphene provides a fast multidimensional channel for electron transfer and effectively improves the adsorption capacity of PDI due to the large specific surface area. What’s more, the rGO/PDI composite exhibits great stability than the pure PDI. Overall, this work provides a new insight into improving the photocatalytic activity of self-assembled organic materials.

Subfields: Materials Chemistry, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/0ae63fd76f90c6ca4eafec649cb47e42a073360e

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Materials Chemistry

1. W. Yao
2. Yongfa Zhu
3. H. Miao
4. Zhi Chen
5. Xibao Li
6. J. Xiong
7. Juntong Huang

In Renewable Energy, Sustainability and the Environment

1. Yongfa Zhu
2. W. Yao
3. H. Miao
4. Zhen Wei
5. Zhi Chen
6. Xibao Li
7. J. Xiong
8. Juntong Huang

Citations in the corpus

• CN/rGO@BPQDs high-low junctions with stretching spatial charge separation ability for photocatalytic degradation and H2O2 production (2020, background): “This was mainly because rGO and BPQDs had strong visible and near-infrared light response ability [72,73], which was advantageous for improving the utilization of solar energy.”
• Enhanced organic pollutant photodegradation via adsorption/photocatalysis synergy using a 3D g-C3N4/TiO2 free-separation photocatalyst (2019, background): “5d, S17 and S18, the polluted water flows in from the left side corner and then flows out from the right one [12,39].”