ChemSusChem
·
2023
·Vol. 16
·期 15
·e202300343
·
IF 8.4
Meichen Guo,Wu Tang,Chenbin Tang,Xuesong He,Jiahui Hu,Cong Fan
Graphical Through a surface self-carbonization strategy, a carbon layer with controllable thickness can be built on the surface of [ N , N’ -bis(2-anthraquinone)]-1,4,5,8-naphthalenetetracarboxdiimide (NTCDI-DAQ) particles and significantly increase their insolubility in liquid electrolytes without affecting the electrochemical behavior of the bulk particles. The resulting NTCDI-DAQ@C samples indeed show the expectantly enhanced cathode performance when compared to the pristine NTCDI-DAQ in K-ion batteries. Small-molecule organic cathodes face dissolution in potassium-ion batteries (PIBs). For the first time, an interesting and effective strategy is unveiled to resolve this issue by designing a new soluble small-molecule organic compound namely [ N , N ’-bis(2-anthraquinone)]-1,4,5,8-naphthalenetetracarboxdiimide (NTCDI-DAQ, 237 mAh g −1 ): Through the precise manipulation of carbonization temperature and time, the molecules on the surface of NTCDI-DAQ particles can be transformed into amorphous carbon with controllable thickness. This strategy called surface self-carbonization can form a carbon protective layer on organic cathodes and significantly increase their insolubility against liquid electrolytes without affecting the electrochemical behavior of bulk particles. As a result, the as-obtained NTCDI-DAQ@C sample displays significantly improved cathode performance in PIBs. In half cells, NTCDI-DAQ@C shows superior capacity stability of 84 % compared to 35 % of NTCDI-DAQ during 30 cycles under the same conditions. In full cells with a KC 8 anode, NTCDI-DAQ@C delivers a peak discharge capacity of 236 mAh g −1 cathode and a high energy density of 255 Wh kg −1 cathode in 0.1–2.8 V, with 40 % capacity retention during 3000 cycles at 1 A g −1 . To the best of our knowledge, the integrated performance of NTCDI-DAQ@C is among the best of soluble organic cathodes reported in PIBs.
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PubMed
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2022
·
IF 11.357
Man Chen,Quanhua Cai,Xiangyu Chen,Shaofu Huang,Qinyuan Feng,Tetsuro Majima,Raymond Jianxiong Zeng,Shungui Zhou
Semiartificial photosynthesis shows great potential in solar energy conversion and environmental application. However, the rate-limiting step of photoelectron transfer at the biomaterial interface results in an unsatisfactory quantum yield (QY, typically lower than 3%). Here, an anthraquinone molecule, which has dual roles of microbial photosensitizer and capacitor, was demonstrated to negotiate the interface photoelectron transfer via decoupling the photochemical reaction with a microbial dark reaction. In a model system, anthraquinone-2-sulfonate (AQS)-photosensitized Thiobacillus denitrificans, a maximum QY of solar-to-nitrous oxide (N2O) of 96.2% was achieved, which is the highest among the semiartificial photosynthesis systems. Moreover, the conversion of nitrate into N2O was almost 100%, indicating the excellent selectivity in nitrate reduction. The capacitive property of AQS resulted in 82–89% of photoelectrons released at dark and enhanced 5.6–9.4 times the conversion of solar-to-N2O. Kinetics investigation revealed a zero-order- and first-order- reaction kinetics of N2O production in the dark (reductive AQS-mediated electron transfer) and under light (direct photoelectron transfer), respectively. This work is the first study to demonstrate the role of AQS in photosensitizing a microorganism and provides a simple and highly selective approach to produce N2O from nitrate-polluted wastewater and a strategy for the efficient conversion of solar-to-chemical by a semiartificial photosynthesis system.
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高影响因子
RESEARCH IN MICROBIOLOGY
·
2022
·
IF 3.946
Yuanyuan Song,Ziqi Wang,Yijing Long,Yang Mao,Feng Jiang,Yuanyuan Lu
Candida albicans can form biofilm on biotic and abiotic surfaces of medical implants to cause superficial and systemic infections under specific condition. The formation of hyphae and matrix of C. albicans are considered as probable virulence factors . We assessed the inhibitory activities of 26 anthraquinones against C. albicans biofilm formation, which were substituted by different functional groups including hydroxyl groups, amino groups, carboxyl groups, alkyl groups, and glycoside groups at C1- or C2-position. Among them, anthraquinones without substituents at other positions but only an alkyl group attached to C2-position, namely 2-alkyl-anthraquinones were determined to have significant anti-biofilm activities. Furthermore, 2-ethylanthraquinone can significantly affect genes related to extracellular matrix ( PMT6 and IFD6 ), and hyphal formation ( HWP1 , ECE1 and EFG1 ), leading to the disrupted formation of biofilm, by detail transcriptomics analysis. We believed that 2-ethylanthraquinone could inspire more discoveries of anti-biofilm agents against C. albicans .
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高影响因子
Energy Technology
·
2022
·Vol. 10
·期 5
·2101140
·
IF 4.149
Chaoxu Ye,Xin Zhang,Ying Wang,Meng Qin,Yanjun Shi,Zhidong Chen,Wenchang Wang,Jianyu Cao,Juan Xu
Anthraquinone and its derivatives show compelling electrochemical activities in lithium-ion batteries due to their abundant redox-active carbonyl groups and desirable π -conjugated structures. However, anthraquinone-based compounds often suffer from inferior material utilization, a low-capacity retention rate, and short cycle life due to poor conductivities and unexpected dissolution properties in supporting electrolytes during the charge/discharge cycles. To solve these problems, a novel grafted polymer, poly(N-anthraquinoyl pyrrole) (e-PAQPy), containing redox-active anthraquinone subunits and conductive polypyrrole groups, is prepared by an electrochemical polymerization method and employed as the cathode material for organic lithium-ion batteries. Polypyrrole backbone chain in e-PAQPy is utilized both to bring into high electronic conductivity and to decrease the solubility of the anthraquinone subunits. As expected, the e-PAQPy exhibits a high specific capacity (196.2 mAh g −1 at 0.1 C), good rate performance (70.8 mAh g −1 at 3 C), and long cycle stability (79% of the initial capacity after 500 cycles).
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高影响因子
ACS Applied Energy Materials
·
2023
·
IF 6.4
Qin Feng,Yingnan Cao,Chaofei Guo,Ling Chen,Weiwei Sun,Yong Wang
Organic electrodes have been identified as promising energy-storage materials for aqueous zinc-ion batteries (AZIBs). Small molecular materials have ideal redox properties, high specific capacity, and structural diversity, making them a category of cathode candidates for AZIBs. However, the instability and dissolution during the extraction and insertion of H+/Zn2+ limit their application of the long-cycle stability for AZIBs. Herein, a small-molecule nanosheet (NI-DAQ, ∼14 nm in thickness) with imide linkage is designed and synthesized by the condensation of anthraquinones and anhydrides. It not only inhibits the dissolution of monomer electrodes but also boosts the reactivity and conductivity of the whole molecule by the introduction of π-conjugated imide groups and extended aromatic planes. Therefore, the NI-DAQ electrode obtains a large initial capacity of 191.9 mA h g–1 at 50 mA g–1 and superior cyclability after 3000 cycles at 500 mA g–1 with a minor average capacity fading rate of 0.01% per cycle. Moreover, in situ Fourier transform infrared (FT-IR) and ex situ X-ray photoelectron spectroscopy (XPS) characterization techniques have been implemented to investigate the redox mechanism of C═O units in AZIBs for the NI-DAQ electrode. Thus, a promising conductive molecule is developed and explored in this paper, which can provide insights into the application of organic materials in AZIBs.
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高影响因子
GREEN CHEMISTRY
·
2021
·Vol. 23
·期 16
·6090-6100
·
IF 10.182
Xinxin Wang,Wu Tang,Yang Hu,Wenqiang Liu,Yichao Yan,Liang Xu,Cong Fan
An insoluble small-molecule organic compound [N,N′-bis(2-anthraquinone)]-perylene-3,4,9,10-tetracarboxydiimide (PTCDI-DAQ) can be a high-performance cathode in Li-ion batteries (LIBs). In half cells, PTCDI-DAQ delivers a peak specific capacity of 229 mA h g−1, along with the good retention of 82% over 3 months. Meanwhile, PTCDI-DAQ can still hold a capacity of 46 mA h g−1 at 25 A g−1. By using the reduced state (Li4TP) of lithium terephthalate (Li2TP) as an organic anode in the all-organic Li-ion batteries (OLIBs), our OLIBs can realize a high-energy density of 296 W h kg−1cathode in the voltage range of 0.2–3.2 V and fulfill a long lifespan over 20 000 cycles. To the best of our knowledge, the comprehensive performance of our PTCDI-DAQ II Li4TP OLIBs is currently one of the best pure-organic LIBs in the world.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2020
·Vol. 30
·期 17
·2000675
·
IF 16.836
Yang Hu,Wu Tang,Qihang Yu,Xinxin Wang,Wenqiang Liu,Jiahui Hu,Cong Fan
Organic redox-active molecules are inborn electrodes to store large-radius potassium (K) ion. High-performance organic cathodes are important for practical usage of organic potassium-ion batteries (OPIBs). However, small-molecule organic cathodes face serious dissolution problems against liquid electrolytes. A novel insoluble small-molecule organic cathode [ N , N ′-bis(2-anthraquinone)]-perylene-3,4,9,10-tetracarboxydiimide (PTCDI-DAQ, 200 mAh g −1 ) is initially designed for OPIBs. In half cells (1–3.8 V vs K + /K) using 1 m KPF 6 in dimethoxyethane (DME), PTCDI-DAQ delivers a highly stable specific capacity of 216 mAh g −1 and still holds the value of 133 mAh g −1 at an ultrahigh current density of 20 A g −1 (100 C). Using reduced potassium terephthalate (K 4 TP) as the organic anode, the resulting K 4 TP||PTCDI-DAQ OPIBs with the electrolyte 1 m KPF 6 in DME realize a high energy density of maximum 295 Wh kg −1 cathode (213 mAh g −1 cathode × 1.38 V) and power density of 13 800 W Kg −1 cathode (94 mAh g −1 × 1.38 V @ 10 A g −1 ) during the working voltage of 0.2–3.2 V. Meanwhile, K 4 TP||PTCDI-DAQ OPIBs fulfill the superlong lifespan with a stable discharge capacity of 62 mAh g −1 cathode after 10 000 cycles and 40 mAh g −1 cathode after 30 000 cycles (3 A g −1 ). The integrated performance of PTCDI-DAQ can currently defeat any cathode reported in K-ion half/full cells.
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高影响因子
MACROMOLECULES
·
2015
·
IF 5.8
Zhao Li,Zhen Zheng,Shan Su,Lin Yu,Xinling Wang
A hydrogel with tunable potential functionalization sites has been successfully prepared. As potential functionalization sites, (2-hydroxypropyl)-α-CDs (Hy-α-CDs) were introduced into the network of tetrahedron-like poly(ethylene glycol) (tetra-PEG) gel through supramolecular chemistry. In the stage of complexation, poly-pseudo-rotaxane consisting of tetra-PEG macromonomer and Hy-α-CD formed in pregel solution. The dynamic complexation process and the structure of the poly-pseudo-rotaxane were investigated by NMR experiment. In the stage of gelation, some cross-linking reactions were completed through click chemistry. The structures and mechanical properties of the resultant hydrogels were characterized by ATR-FTIR, XPS, SEM, and compression test in detail. The number of Hy-α-CD introduced into the hydrogel is related closely to the structure of the poly-pseudo-rotaxane and can be controlled easily by tuning the feed ratio. Anthracene as an example of function was introduced into the hydrogel through Hy-α-CD to preliminarily demonstrate the validity of the potential functionalization site in the last, and the hydrogel also has the capacity for further diverse functionalization.
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高影响因子
IONICS
·
2017
·Vol. 24
·期 2
·549-561
·
IF 2.062
Ma Guofu,Hua Fengting,Sun Kanjun,Feng Enke,Zhang Zhiguo,Peng Hui,Lei Ziqiang
The design of composited porous carbon-based electrode materials is keyed to improve the electrochemical performance for supercapacitors. Here, the natural carrot is used as a precursor to prepare porous carbon skeletons (CCs). Three different anthraquinones: anthraquinone (AQ), amino-anthraquinone (1-AAQ), and 2-aminoanthraquinone (2-AAQ) are used to modify the carbon skeletons with absorption. The maximum capacitance is obtained from material modified with 1-AAQ; it (1-AAQ-CC2) exhibits a noticeable pseudocapacitive performance with a brilliant capacitance of 328 F g −1 at 0.5 A g −1 and excellent cyclic stability (95% capacitance retention after 5000 cycles at 3 A g −1 ) in 2 mol L −1 KOH aqueous electrolyte. Moreover, the assembled 1-AAQ-CC2/1-AAQ-CC2 symmetric supercapacitor exhibits a high energy density of 14.8 Wh kg −1 at a power density of 240 W kg −1 operated at the voltage range of 0 to 1.8 V in 0.5 mol L −1 Na 2 SO 4 aqueous electrolyte. These results exhibit eco-friendly and low-cost design of organic and inorganic composite electrode materials for high-performance supercapacitors.
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高影响因子
危险品化学品经营许可证（带存储）