CATALYSIS COMMUNICATIONS
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2021
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IF 3.626
Jin-Ge Hao,Hui-Qi Chen,Lei Xie,Ze-Xiang Li,Jia-Lin Zhang,Wei-Ya Huang,Tao Deng,Kang-Qiang Lu,Kai Yang
Constructing organic-inorganic semiconductor heterojunctions is an efficient way to inhibit the recombination of photogenerated charge carriers and enhance photocatalytic performance of semiconductor. Herein, a novel heterojunction antimony sulfide-perylene diimides (Sb 2 S 3 -PDI) heterojunction has been fabricated through a facile hydrothermal method. Compared with bare Sb 2 S 3 and PDI, the Sb 2 S 3 -PDI hybrid has showed significantly superior activity in photocatalytic reduction of Cr (VI). The superior photocatalytic performance of Sb 2 S 3 -PDI hybrid is due to the formation of type-I heterojunction, which leads to a more efficient separation and migration of photogenerated electron-hole pairs. This work is expected to promote continued interest in the construction of organic-inorganic semiconductor composites with enhanced photocatalytic performance.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
SEPARATION SCIENCE AND TECHNOLOGY
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2018
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IF 1.2
Kai Xu,Haiming Jin,Linfang Wang,Yi Liu,Chen Zhou,Jürgen Caro,Aisheng Huang
A seeding-free synthesis method is developed for preparation of oriented zeolite LTA membranes by using 1,4-phenylene diisocyanate (PDI) as a molecular linker. Before hydrothermal synthesis, –NCO groups are introduced with the functionalization of Al2O3 supports by PDI. A thin, well intergrown zeolite LTA membrane with a thickness of about 4.0 µm can be formed on the PDI-modified Al2O3 supports. The zeolite LTA membrane displays high pervaporation performances for dehydration of alcohols. At 90°C, the separation factor of the zeolite LTA membrane is 4480 for dehydration of 95 wt% ethanol/water mixtures, with a high water flux of 3.4 kg·m−2·h−1.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Hui Chen,Wengao Zeng,Yutang Liu,Wanyue Dong,Tao Cai,Lin Tang,Juan Li,Wenlu Li
It is important to find an effective way to enhance the photocatalytic efficiency of metal–organic frameworks. In this work, an organic supermolecule perylene diimide (PDI) semiconductor with a carboxyl terminal was added into the synthesis process of MIL-53(Fe) crystals. The PDI/MIL-53(Fe) (PM) composite photocatalyst was first obtained. The TC-H photodegradation rate of the most efficient 5PM was nearly 94.08% within 30 min, whose apparent reaction rate constant (k) is 4 times that of PDI and 33 times that of MIL-53(Fe), respectively. By investigation and characterization, it has been found that PDI nanofibers were dispersed and fixed in MIL-53(Fe) and bonded to each other by covalent bonds. The radical trap experiments and electron spin resonance analysis illustrated that hydroxyl radical (·OH), superoxide radical (·O2–), and photogenerated holes (h+) were active species. Combined with the band structure of PDI and MIL-53(Fe), it is proposed that the PM photocatalyst was a Z-scheme heterojunction mechanism. Therefore, PM photocatalysts showed excellent charge separation and transfer ability. The performance improvement of 5PM is due to enhanced visible light absorption, efficient charge separation, and excellent redox potential. Five cyclic photocatalytic tests and experiments further demonstrate that the 5PM photocatalyst has a promising future for pollutant removal.
研究领域:
材料科学
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环境科学
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化学
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DOI
PubMed
高影响因子
Journal of Materials Chemistry C
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2025
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IF 5.1
Yiming Gou,Zejun Cao,Chunhua Ge,Rui Liu,Han Xu,Fengqi Li,Xiangdong Zhang
Research on fluorescent composites based on phase change materials is currently a hot topic. In this study, we reported the synthesis of N,N’-bis(1-octylheptadecyl)-3,4,9,10-perylenetetracarboxydiimide (PDI-C8) from perylene-3,4,9,10-tetracarboxylic dianhydride (PDI) and heptadecyl-9-amine. Two types of PDI-C8 paraffin fluorescent materials were developed: PDI-C8/paraffin composites and PDI-C8 paraffin emulsion via the Phase Inversion Composition (PIC) method. The structure, composition, and fluorescence properties of PDI-C8 were studied using NMR, MS, FT-IR, UV and FL, respectively. The photothermal conversion performance of the PDI-C8/paraffin composites was investigated. Results showed improved photothermal conversion with increased PDI-C8 contents, suggesting potential applications in solar thermal energy utilization and storage. The two fluorescent materials were characterized using DSC and FL. The photoluminescence phenomena of PDI-C8 paraffin fluorescent materials with different PDI-C8 contents all exhibit temperature-controlled characteristics. Based on the properties, a fluorescent thermometric paper was developed. Moreover, the utility of the two fluorescent materials extends to fields like anti-counterfeiting identification and encrypted writing.
研究领域:
材料科学
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光学
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能源科学
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产品关联
DOI
高影响因子
LANGMUIR
·
2024
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IF 3.7
Bizhuo Wei,Huajing Li,Huan Chu,Huanhuan Dong,Yijun Zhang,Cai-Li Sun,Yuangang Li
This work presents a study of the thermally induced aggregation of perylene diimide (PDI) and naphthalene diimide (NDI) derivatives modified with oligo ethylene glycol (OEG) chains in aqueous solution. Water-soluble and flexible OEG side chains were introduced into the π-core of glutamate-modified NDI and PDI structures, and the aggregation process was modulated by heating or cooling in water. Interestingly, a rare opposite temperature response of fluorescent behavior from the two amphiphilic chromophores was revealed, in which the PDI exhibited fluorescent enhancement, while fluorescent quenching upon temperature increase was observed from the NDI assembly. The mechanism of thermally induced aggregation is clearly explained by studies with various spectroscopic techniques including UV–visible, fluorescence, 1H NMR, 2D NMR spectroscopy, and SEM observation as well as control experiments operated in DMSO solution. It is found that although similar J-aggregates were formed by both amphiphilic chromophores in aqueous solution, the temperature response of the aggregates to temperature was opposite. The degree of PDI aggregation decreased, while that of NDI increased upon temperature rising. This research paves a valuable way for understanding the complicated supramolecular behaviors of amphiphilic chromophores.
研究领域:
超分子化学
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材料科学
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物理化学
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产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
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2023
·
IF 3.8
Ziyang Lu,Bing Li,Xiaodie Zhu,Yangrui Xu,Jutao Zhang,Guosheng Zhou,Binghui Wei,Xinlin Liu,Jinyu Chu,Chundu Wu
Recyclable and stable imprinting modified PDI/ZnFe 2 O 4 (IM-PDI/ZFO) was assembled by mutual magnetic attraction. Interestingly, the obtained IM-PDI/ZFO exhibited granular ZnFe 2 O 4 (ZFO) attached to the aggregated PDI. The mutual magnetic attraction of ZFO leaded to the aggregation of PDI, which effectively improved the ability of IM-PDI/ZFO to enrich pollutants and further enhanced the photodegradation activity. Meanwhile, due to the appropriate energy band position, PDI and ZFO formed an S-scheme heterojunction, eliminating useless photogenerated charge carriers and enhancing the photodegradation ability of IM-PDI/ZFO. Most importantly, because of the introduction of imprinting modification technology, tetracycline (TC) was added during the synthesis process. The IM-PDI/ZFO obtained imprinted cavities consistent with the three-dimensional structure of TC, which was not only conducive to improve the photocatalytic activity under visible light, but also endowed IM-PDI/ZFO with high selectivity, the selectivity coefficient reached 2.31. This work presents an innovative viewpoint for the synthesis of magnetic imprinted S-scheme heterojunction photocatalysts.
研究领域:
环境科学
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材料科学
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光催化
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
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IF 9.965
Wenwu Zhou,Bing Yang,Guo Liu,Chenmin Xu,Qiuyi Ji,Weiming Xiang,Dunyu Sun,Qiang Zhong,Huan He,Liu Yazi,Zhe Xu,Chengdu Qi,Shiyin Li,Shaogui Yang
Employing perylene diimide supermolecule (PDI) as metal-free cocatalyst, a novel PDI/g-C 3 N 4 /Bi 2 WO 6 (PCB) photocatalyst was constructed for the effective degradation of antibiotics. Both the photocatalytic activity and photostability of g-C 3 N 4 /Bi 2 WO 6 (gCB) were further improved after loading PDI. Under simulated sunlight illumination, the apparent rate constant of tetracycline (TC) degradation by PCB reached 2.6 times that of gCB. The photocatalytic activity of PCB still kept over 80% after 4 cycle experiments, while gCB only remained around 21%. The superior activity of PCB was ascribed to the synergism between the extended visible light absorption range through the participation of PDI cocatalyst and facilitated gCB-to-PDI photoelectron transfer. TC would finally be transformed into non-toxic ring opening products and mineralized. This work demonstrated that PDI was an excellent metal-free cocatalyst and exhibited great potential to boost the activity of photocatalysts.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
·
IF 9.9
Rong Yan,Meiyang Song,Peng Chen,Henghui Song,Chengbing Fu,Haiyang Peng,Shuang-Feng Yin
Designing a robust built-in electric field (BF) is a charming strategy for enhancing the separation and transportation of charges via introducing large π-conjugated molecules. However, it has flexible or semiflexible geometries, which significantly disorder the crystalline and deteriorated the built-in electric field. Here, a straightforward tactic for creating a cyano-functionalized smaller D (benzene) - A (triazine) units in PDI- triazine based polymer (PDIMB) to enhance intrinsic molecule dipole has been proposed. The density functional theory (DFT) calculation revealed that the modification of smaller D-A groups destroyed the π-localization of charges, which enhanced the molecular dipole and the BF for promoting the exciton dissociation and charge transfer. Moreover, it not only exposed number of active sites, but also enhanced the interfacial molecular interacting. Therefore, PDIMB-2 exhibits high activity (24.5 mmol g -1 h -1 ) and selectivity (>99%) for the photooxidation of benzylamine to N -benzylidenebenzylamine under mild conditions. Our work offers a potential and simple synthetic option for enhancing the built-in electric field of polymer.
研究领域:
材料科学
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光催化
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
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2020
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IF 6.215
Peng Yang,Xin Xi,Tao Huang,Qianqian Zhong,Biao Jiang,Ruili Liu,Dongqing Wu
An acid-assisted vacuum filtration approach is developed in this work to fabricate perylene diimide (PDI) and single wall carbon nanotube (SWCNT) based organic lithium ion battery (LIB) cathodes by using concentrated sulfuric acid (H 2 SO 4 ) as the solvent. PDI and SWCNT can be readily dispersed in H 2 SO 4 by the protonation of their aromatic frameworks, thus rendering the effective combination of them in the acidic solution. The resulting PDI/SWCNT films are highly appealing flexible cathodes for LIBs by associating the intriguing electrochemical activity of PDI with the excellent electric conductivity and mechanical stability of SWCNT. Either with lithium foils or pre-lithiated carbon clothes as the anodes, the LIBs with PDI/SWCNT cathodes can deliver highly stable electrochemical performances in terms of rate capability and cycling stability. The PDI/SWCNT cathodes also have very good mechanical stability, enabling the LIBs based on them to reserve the battery performances at different bending states. The excellent electrochemical stability of the PDI/SWCNT cathodes is attributable to the acidic solution based processing method, which is expected to be expanded in the electrode fabrication of various organic secondary batteries with π-conjugated components.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
DOI
高影响因子
Catalysis Science & Technology
·
2020
·Vol. 11
·期 5
·1899-1913
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IF 5.721
Xiaojuan Bai,Cong Wang,Xuyu Wang,Tianqi Jia,Boxuan Sun,Shengqi Yang,Di Li,Junqi Li,Haiyan Li
Pharmaceutical and personal care products (PPCPs) are the most common hazardous environmental pollutants. Accordingly, PDI anion radicals are promising photocatalysts to transform PPCPs into non-toxic CO2 and H2O for their clean and efficient production. In the present work, we successfully synthesized an electrophilic PDI supramolecular (sEACA-PDI) compound with high electron affinity through a simple gelation process. Its electron affinity is contributed by its side chain, which enhances the electrophilicity of its perylene core edge. Consequently, sEACA-PDI tends to form anion radicals to provide a SOMO orbital, which allows sEACA-PDI to obtain electrons successively from organic pollutants. Its side chain also generates a polarized surface electric field, building an efficient pathway for electron transfer. The high flexibility and freedom of the sEACA-PDI side chain is beneficial to form a cluster structure. Numerous strongly electrophilic groups are exposed on the surface of sEACA-PDI, which further enhance its electron affinity. sEACA-PDI exhibited high photocatalytic degradation efficiency for classical organic pollutants via successive electrophilic attack, i.e. the k for DCF was 0.923 h−1. Also, sEACA-PDI achieved a k value of 0.351 h−1 for the degradation of MB. This work proposes a promising strategy for developing PDI anion radicals with high electron affinity, and also provides new insights for the treatment of environmental pollutants.
研究领域:
环境科学
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材料科学
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化学
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
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2024
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IF 7.4
Yuhang Ren,Yu Tian,Yating Lu,Dongyu Nie,Huayi Zhu,Xia Yang
Malathion (MA) is a widely used organophosphorus pesticide globally. Developing efficient photocatalysts is crucial for eliminating MA pollution in water by photocatalytic technology. This study focuses on preparing a series of H-PDI supermolecule/NH 2 -MIL-101(Fe) (PM) materials by amidating NH 2 -MIL-101(Fe) with the more stable H-PDI supermolecule, forming a covalent O C–NH bond. Among these materials, 40 %PM (indicating a mass percentage content of 40 % H-PDI supermolecule in PM) exhibited the best performance for degradation of MA. Under simulated sunlight irradiation of a 10 mg·L 1 MA solution for 180 min, the reaction rate constants of 40 %PM were 5.95 times and 3.13 times higher than those of NH 2 -MIL-101(Fe) and H-PDI supermolecule, respectively. The enhanced performance is attributed to the formation of Z-scheme heterojunctions in the 40 %PM composite lead to fast separation of photogenerated e − and h + . Combining the results of HPLC-MS with Fukui Function, the HOMO, LUMO, and pathway of degradation of MA attracted by 1 O 2 , •OH, and h + were speculated. The pathway involves oxidation, demethylation, P-S bond breakage, decarboxylation, and final conversion to some inorganic molecules. The toxicity of the degradation byproducts were lower than that of MA estimated by Toxicity Estimation Software Tool.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
Science Bulletin
·
2019
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IF 6.277
Hong Miao,Jun Yang,Guilong Peng,Huiquan Li,Yongfa Zhu
A self-assembled perylene diimide (SA-PDI) film was prepared on an indium-tin-oxide (ITO) substrate and acted as a photoanode for the photoelectrocatalytic (PEC) degradation of some emerging contaminants under visible light irradiation ( λ > 420 nm) and applied voltage. Due to the synergistic effect, the photocatalytic degradation rate by the SA-PDI film under visible light irradiation and an applied voltage of 2.1 V was 2.72 times and 14.5 times those of the PC and EC processes, respectively. The visible light irradiation not only generated a promoting effect on electrocatalytic (EC) oxidation at potentials above 1.2 V but also generated many more h + for promoting the electrocatalytic oxidation of phenol. Furthermore, an applied voltage above 1.2 V could effectively improve the separation rate of electrons from the SA-PDI electrodes to the Pt electrodes, and then, much more O 2 − and OH could be generated for improving the photocatalytic (PC) oxidation efficiency. Therefore, the h + , OH and O 2 − could improve the synergistic effect of phenol oxidation during the PEC process. Moreover, the SA-PDI film appeared to have satisfactory stability in the PEC process. The SA-PDI film was also proven to be effective for two other contaminants, namely, 2,4-dichlorophenol, and ciprofloxacin.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
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