CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Haoyi Wang,Ye Zhou,Jinnan Wang,Aimin Li,Philippe François-Xavier Corvini
To remove endocrine disrupting chemicals (EDCs), visible-light response photocatalyst BiOBr/Bi 4 O 5 Br 2 /perylene diimide (PDI) with bi-heterojunction was constructed. Under visible-light irradiation, BiOBr/Bi 4 O 5 Br 2 /PDI could degrade 90% Bisphenol A (BPA) within 75 min, while degrade 100% 17α-ethynyl estradiol (EE2) and 17β-estradiol (E2) within 15 min. Radicals quenching experiment and EPR indicated both •O 2 – and holes were the main substances for EDCs degradation, and the possible degradation pathway of EDCs are proposed based on the LC-MS analysis results. In the composite of BiOBr/Bi 4 O 5 Br 2 /PDI, the matching energy band structure between Bi 4 O 5 Br 2 and BiOBr facilitated the formation of heterojunction for strengthening the space charge separation. Meanwhile, PDI with strong photosensitivity combined with BiOBr/Bi 4 O 5 Br 2 not only enhanced visible-light photocatalytic activity but also broadened the light-harvesting range. Owning to the unique one-dimensional conjugated structure and internal electric field effect, PDI could also promote the photo-carriers transfer and separation. With the bi-heterojunction effect, photo-generated electrons were transferred to BiOBr conduction band while holes were accumulated on PDI valence band. Simultaneously, holes could oxidize water with the production of oxygen following being reduced to •O 2 – by photo-generated electrons. Even under oxygen-poor conditions, the production of •O 2 – can reach 32.7 × 10 -5 mol•g −1 •h −1 , resulting in more than 85% BPA degradation within 75 min.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2022
·
IF 24.319
Shihui Wang,Yuzhou Xia,Guiyang Yan,Meixia Chen,Xuxu Wang,Ling Wu,Ruowen Liang
Inspired by the concept of frustrated Lewis pairs (FLPs) from homogeneous catalysis, an organic supramolecular bridged metal-organic frameworks (MOFs) heterojunction, i.e., a perylene-3,4,9,10-tetracarboxylic diimide@MIL-125(Ti)-NH 2 (denoted PDI@MTi) composite is successfully fabricated via a two-step synthesis method. Experimental characterisations and theoretical calculations reveal that in the obtained “TiO 5−x -ligand-PDI” FLPs, the unsaturated Ti-O clusters function as a Lewis acid to accept photogenerated electrons, and the PDI sites act as a Lewis base to capture photogenerated holes. With the unique structure characteristics, the PDI@MTi shows excellent photocatalytic activity toward the disinfection of Staphylococcus aureus and Cr(VI) reduction, with 1.0- and 10.3-fold enhancements, respectively, compared with unadorned MTi. The synergic effects of the micro polarisation field, multiple active sites, and a C-N bonded interface contributed to photoactivity enhancement. This work demonstrates the potential of using MTi as a platform for constructing FLPs-containing heterogeneous photocatalysts and provides new strategies to control carrier separation.
研究领域:
材料科学
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环境科学
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生物学
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2020
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IF 7.1
Li Zhang,Yiwen Zhao,Yuwei Wu,Yanping Jiang,Qianwei Wang,Xinyi Lin,Gang Song,Kunlun Huang,Zhiyi Yao
Antibiotic residue in food products has aroused considerable public concerns all over the world. It is of great significance to develop an efficient approach for rapid detection of antibiotics in food. In this work, a selective and sensitive method for detecting Polymyxins B (PMB) was established in 100 % aqueous media based on the supramolecular aggregates of water-soluble perylene diimide (PDI) derivative. We have designed and synthesized a series of PDI derivatives (PDI-1, 2, 3, 4, Scheme 1). The sensing performance and mechanism of PDI-based probes werestudied by absorption, emission, and circular dichroism (CD) techniques. It was found that the formation of the supramolecular aggregate driven by the non-covalent interactions between PMB and PDIs accounted for the fluorescence quenching of PDIs. PDI-1 was screened to be the most effective probe, which has the characteristics of detecting PMB rapidly and intuitively in both solution state and solid support. The detection limit can be extended to be 18.5 nmol/L by the aid of fluorometry. PDI-1 can also be used for the determination of PMB in practical samples with high sensitivity and large operative range. To the best of our knowledge, this work is the first example of fluorescent sensing PMB based on organic molecular probes in 100 % aqueous media.
研究领域:
分析化学
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食品科学
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药物化学
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超分子化学
✓ 已验证
DOI
高影响因子
Journal of Physical Chemistry C
·
2023
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IF 3.7
Jian Kong,Xiaoqing Cao,Lingwei Kong,Wenying Shi,Chao Lu
Introducing electron transport materials (ETMs) into perovskite solar cells (PSCs) has opened up a new avenue to improve device efficiency. However, the most commonly used method of introducing ETMs still relies on a high-vacuum process due to their poor solubility, which prevents the application of ETMs in full solution-processable PSCs. Here, solvothermal technology is employed to treat the insoluble perylene diimide (PDI) molecule, giving the typical n-type organic semiconductor its soluble properties. The as-obtained products (PDI-CDs) as ETMs not only are suitable for the preparation of solution-processable PSCs but also have matched energy levels with adjacent components in the device. The appearance of oxygen-containing functional groups enables PDI-CDs to chelate uncoordinated Pb, suppressing interfacial recombination and improving efficiency by passivating the surface defects of perovskite crystals. The all-air processed carbon-based PSCs modified with PDI-CDs achieved a respectable power conversion efficiency of 11.90%.
研究领域:
材料科学
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太阳能
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纳米技术
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2021
·
IF 8.198
Xiangchen Kong,Chao Liu,Yuyang Fan,Weicong Xu,Rui Xiao
Production of jet fuel precursors from waste kraft lignin through a depolymerization and hydrodeoxygenation (DHDO) method with a complex copper acid catalyst is reported. The kraft lignin undergoes a high degree of depolymerization, deoxygenation, hydrogenation, and C–C coupling. Monomers and dimers with molecular weights in the ranges of <200 Da and 354–452 Da are obtained with optimized yields reaching 93.29 and 39.30 C% at 360 °C for 8 h, while trimers and oligomers with higher molecular weights are also generated with lower contents. The high carbon yields of monomers and dimers are given by the incorporation of methanol solvent. The double bond equivalent (DBE) and polydispersity index (PDI) decrease from 14.77 and 2.77 in kraft lignin to 9.05 and 1.35 in the products, while the high heating value (HHV) increases from 24.53 to 36.47 MJ/kg after reaction. Furthermore, over 45% of the optimized products have boiling points in the range of that of commercial jet fuel (60–280 °C). All these results demonstrate the appropriate properties of the products from kraft lignin DHDO as potential jet fuel precursors.
研究领域:
化学工程
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催化
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可再生能源
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生物燃料
✓ 已验证
产品关联
DOI
高影响因子
Nature Energy
·
2025
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IF 60.1
Liu Sanwan,Miao Tianyin,Wang Jianan,Zhang Yong,Chen Rui,Lei Xia,Qin Wenming,Zhu Zhongjie,Lu Lanlu,Chen Zhenhua,Cui Peng,Li Liang,Li Meicheng,Xu Erxiang,Shen Yang,Cho Seong Chan,Lee Sang Uck,Cho Seong-Ho,Liu Zonghao,Chen Wei,Park Nam-Gyu
The certified quasi-steady-state efficiency of reported inverted perovskite solar cells (PSCs) has rarely surpassed 26%, primarily attributed to interfacial energy-level misalignment and defect-mediated non-radiative recombination. Here we report a surface-phase-transformation strategy of introducing a minuscule amount of N -methyl pyrrolidone (NMP) into the piperazinium diiodide (PDI)-dissolved isopropanol solution to mitigate these challenges. We demonstrate that NMP induces a distinct crystallization pathway on perovskite surfaces during the post-treatment stage, transitioning from a solvated intermediate phase to the α-phase perovskite, bypassing the conventional δ-intermediate-phase → α-phase route, which improves the crystallinity of perovskite surfaces and reduces contact losses. Moreover, NMP enhances the interaction between PDI and perovskites, further optimizing interfacial band alignment. Consequently, we demonstrate high certified power conversion efficiencies of 26.87% (stabilized efficiency), 23.00% and 29.08% for single-junction PSCs, mini-modules and all-perovskite tandems, respectively. Maximum-power-point tracking retains 96% of initial efficiency after 2,500 h under 1-sun illumination at 65 °C in ambient air.
研究领域:
光伏技术
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材料科学
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可再生能源
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半导体物理
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
BIOSENSORS & BIOELECTRONICS
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2017
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IF 7.78
Rong Hu,Xi Zhang,Qiang Xu,Dan-Qing Lu,Yun-Hui Yang,Quan-Qing Xu,Qiong Ruan,Liu-Ting Mo,Xiao-Bing Zhang
A universal aptameric system based on the taking advantage of double-stranded DNA/perylene diimide (dsDNA/PDI) as the signal probe was developed for multiplexed detection of small molecules . Aptamers are single-stranded DNA or RNA oligonucleotides which are selected in vitro by a process known as systematic evolution of ligands by exponential enrichment . In this work, we synthesized a new kind of PDI and reported this aggregated PDI could quench the double-stranded DNA (dsDNA)-labeled fluorophores with a high quenching efficiency. The quenching efficiencies on the fluorescence of FAM, TAMRA and Cy5 could reach to 98.3%±0.9%, 97.2%±0.6% and 98.1%±1.1%, respectively. This broad-spectrum quencher was then adopted to construct a multicolor biosensor via a label-free approach. A structure-switching-triggered enzymatic recycling amplification was employed for signal amplification . High quenching efficiency combined with autocatalytic target recycling amplification afforded the biosensor with high sensitivity towards small analytes . For other targets, changing the corresponding aptamer can achieve the goal. The quencher did not interfere with the catalytic activity of nuclease . The biosensor could be manipulated with similar sensitivity no matter in pre-addition or post-addition manner. Moreover, simultaneous and multiplexed analysis of several small molecules in homogeneous solution was achieved, demonstrating its potential application in the rapid screening of multiple biotargets.
研究领域:
生物化学
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分子生物学
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分析化学
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生物技术
✓ 已验证
DOI
PubMed
高影响因子
Nanophotonics
·
2018
·Vol. 7
·期 7
·1341-1350
·
IF 6.014
Jiangying Xia,Kang Xie,Jiajun Ma,Xianxian Chen,Yaxin Li,Jianxiang Wen,Jingjing Chen,Junxi Zhang,Sizhu Wu,Xusheng Cheng,Zhijia Hu
This paper systematically demonstrated a variety of experimental phenomena of random lasers (RLs) of N,N′-di-(3-(isobutyl polyhedral oligomeric silsesquioxanes)propyl) perylene diimide (DPP) organic/inorganic hybrid laser dye, which is composed of perylene diimide (PDI) as gain media and polyhedral oligomeric silsesquioxanes (POSS) as scattering media at a mole ratio of 1:2. In this work, we observe the transition from incoherent RL in the DPP-doped solutions and polymer membrane systems using dip-coating method to coherent RL in the polymer membrane system with defect waveguide using semi-polymerization (SP) coating method. Meanwhile, we found that the hybrid dye-DPP has a long lasing lifetime compared with the traditional laser dyes, which indicates that the POSS group can suppress the photo-bleaching effect to extend the working life of laser dyes.
研究领域:
光学
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材料科学
·
光子学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Xueting Yang,Dezhan Ye,Chenyi Wang,Yazhou Chen,Xiancai Jiang,Yingcheng Yang,Zengjin Liu
The emerging approach of in-situ polymerization of solid polymer electrolytes based on 1,3-dioxolane (DOL) possesses the advantage of low interfacial impedance and relatively high Coulombic efficiency. However, the DOL monomer conversion (C%) under Lewis acid catalysts needs to be further improved, besides their alloying ability with lithium metal to generate protective interfacial layer has been ignored. Here, the above two aims are simultaneously achieved by Indium Trifluoride (InF 3 ) catalyst. It is demonstrated that the highest C% is up to 94% with 15 mg of InF 3 in the 1 mL electrolyte (1 M LiTFSI/DOL). The optimized ionic conductivity and lithium-ion transfer number are 8.9 × 10 −5 S/cm (30 °C) and 0.42, respectively. The stable interface between poly-DOL and lithium metal anode could be proved by the stable over-potential (156mv, 900 h) at current density of 2.0 mA cm −2 . X-ray diffraction results confirm the presence of In and In–Li alloy peaks. After 300 cycles at 1C, the assembled Li/PDI 15 /LiFePO 4 cells deliver a 125.2mAh/g, 90% capacity retention and Coulombic efficiency of 99.75%, respectively. This innovative and facile strategy of dual functional InF 3 on the in-situ polymerization of DOL and solid electrolyte interphase formation provides new ideas for design poly-DOL based solid polymer electrolytes.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
FOOD RESEARCH INTERNATIONAL
·
2021
·
IF 6.475
Mengna Cao,Chengzhi Liu,Jieyu Shi,Fangfang Ni,Jiaming Qi,Qing Shen,Min Huang,Gerui Ren,Shiyi Tian,Quanquan Lin,Xiaoxin Lu,Qunfang Lei,Wenjun Fang,Hujun Xie
In this work, the ZEIN-HTCC nanoparticles formed by zein and N-(2-hydroxy)propyl-3-trimethylammonium chitosan chloride (HTCC) were used as stabilizers to prepare oil-in-water (O/W) Pickering emulsions. The preparation conditions including shearing time, volume fraction of corn oil, mass ratio of ZEIN:HTCC and total concentration of ZEIN-HTCC of emulsions were optimized by measuring the droplet size, zeta potential, PDI and surface tension of emulsions. The ZEIN-HTCC emulsions are stable at the pH range of 4–9 and in the low salt ion concentrations up to 0.2 mol L −1 , and can keep stable up to 21 d during low temperature storage. Fourier transform infrared spectroscopy (FTIR), the confocal laser scanning microscope (CLSM) and scanning electron microscopy (SEM) were used to analyze the interaction between emulsion components, revealing that zein and HTCC form a composite layer by flocculation to adsorb on the surface of oil droplets, thus preventing emulsion droplets from aggregation. This novel, long-term stable, surfactant-free, and edible zein-based Pickering emulsion could be used as potential carriers for lipophilic nutrients delivery.
研究领域:
食品科学
·
胶体与界面化学
·
纳米技术
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）