Regulating the photoelectric effect and built-in electric field based on the electronic and spatial effects of substituents on PDIs amide sites to enhance the photocatalytic performance of PDIs

IF 13.3 1区 工程技术 Q1 ENGINEERING, CHEMICAL
Zhengkai Wu, Yunning Chen, Xueying Cheng, Renquan Guan, Shuyu Chen, Yingna Guo, Qingkun Shang
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引用次数: 0

Abstract

How to design and optimize the single-molecule structure of perylene diimide derivatives (PDIs) to obtain high-performance photocatalysts is one of the challenges facing the current research field of PDIs photocatalysis. In this article, we regulate the π-π self-assembly stacking and optoelectronic properties of PDIs by changing the type and position of substituents on the amide site. The PDI-PBA photocatalyst with excellent performance was obtained from seven types of PDIs supramolecular materials. Theoretical calculations and optoelectronic performance tests have shown that PDI-PBA has good crystallinity and maximum dipole moment, resulting in its maximum built-in electric field, effectively promoting the separation and transport of photo-generated carriers. The transient absorption spectra further indicate that photogenerated electrons and holes of PDI-PBA have outstanding separation efficiency and ultra-long lifetime. In the batch reactor, PDI-PBA can degrade almost 100 % acetaminophen within 60 min. In the dynamic cycling system with a surface hydraulic load of 14.56 L/(m2·h), the efficiency of PDI-PBA photocatalytic degradation of acetaminophen can reach 84 %. PDI-PBA can also effectively degrade phenol, levofloxacin, and ciprofloxacin. This work provides a successful example for the design of novel and efficient PDIs supramolecular materials, and lays the foundation for the application of PDIs photocatalysts in practical wastewater treatment.

Abstract Image

利用取代基在pdi酰胺位点上的电子效应和空间效应调节光电效应和内置电场,提高pdi的光催化性能
如何设计和优化苝酰二亚胺衍生物(pdi)的单分子结构以获得高性能光催化剂是当前pdi光催化研究领域面临的挑战之一。在本文中,我们通过改变酰胺位点取代基的类型和位置来调节π-π自组装堆叠和PDIs的光电性能。以7种pdi超分子材料为原料制备了性能优异的PDI-PBA光催化剂。理论计算和光电性能测试表明,PDI-PBA具有良好的结晶度和最大的偶极矩,从而具有最大的内置电场,有效地促进了光生载流子的分离和输运。瞬态吸收光谱进一步表明,PDI-PBA光电子和空穴具有优异的分离效率和超长寿命。在间歇式反应器中,PDI-PBA在60 min内几乎可以降解100% %的对乙酰氨基酚。在表面水力负荷为14.56 L/(m2·h)的动态循环系统中,PDI-PBA光催化降解对乙酰氨基酚的效率可达84 %。PDI-PBA还能有效降解苯酚、左氧氟沙星和环丙沙星。本研究为设计新型高效的pdi超分子材料提供了成功范例,并为pdi光催化剂在实际废水处理中的应用奠定了基础。
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来源期刊
Chemical Engineering Journal
Chemical Engineering Journal 工程技术-工程:化工
CiteScore
21.70
自引率
9.30%
发文量
6781
审稿时长
2.4 months
期刊介绍: The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.
文献相关原料
公司名称
产品信息
麦克林
formic acid
麦克林
p-benzoquinone
麦克林
imidazole
麦克林
Perylene-3,4,9,10-tetracarboxylic dianhydride
麦克林
p-benzoquinone (BQ)
麦克林
imidazole
麦克林
Perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA)
阿拉丁
5,5-dimethyl-1-pyrroline N-oxide
阿拉丁
2,2,6,6-tetramethylpiperidinooxy
阿拉丁
ciprofloxacin
阿拉丁
phenol
阿拉丁
levofloxacin
阿拉丁
acetaminophen
阿拉丁
o-chloroaniline
阿拉丁
m-chloroaniline
阿拉丁
p-chloroaniline
阿拉丁
m-methylaniline
阿拉丁
p-methylaniline
阿拉丁
m-aminobenzoic acid
阿拉丁
P-aminobenzoic acid
阿拉丁
5,5-dimethyl-1-pyrroline N-oxide (DMPO)
阿拉丁
2,2,6,6-tetramethylpiperidinooxy (TEMPO)
阿拉丁
ciprofloxacin (CIP)
阿拉丁
phenol
阿拉丁
levofloxacin (LEV)
阿拉丁
acetaminophen (APAP)
阿拉丁
o-chloroaniline
阿拉丁
m-chloroaniline
阿拉丁
p-chloroaniline
阿拉丁
m-methylaniline
阿拉丁
p-methylaniline
阿拉丁
m-aminobenzoic acid
阿拉丁
P-aminobenzoic acid
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