SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Yang Wang,Lina Zhou,Hui Li,Hailong Zhu,Teng Zhang,Menglun Yin,Qiuyue Xiang,Chen Hou
The photocatalytic (PC) degradation process of volatile organic compounds (VOCs) has been consistently restricted by the rapid recombination of photogenerated electrons and holes. To solve this problem, in this study, a novel photoelectrocatalytic (PEC) coupled system was constructed by integrating a single-chamber direct glucose fuel cell (SDGFC), which is capable of self-generating electricity, into the conventional PC system. The coupling system can inhibit the recombination of photogenerated electrons and holes by continuously generating a current without an applied power source. In addition, nitrogen-doped carbon quantum dots (N-CQDs) were prepared using biomass gelatin. This was employed as a PC material for the catalytic layer of the air cathode in the above coupling system, and the efficient degradation of benzene series (BTEX) was made easy by regulating the content of the N element. Notably, the N-CQDs under the optimal regulation ratio showed excellent optical properties and degradation performance, achieving an impressive PEC degradation rate of over 80 % for BTEX within 180 min. High-performance N-CQDs complement the novel PEC coupling system of self-generating electricity and provide robust support for BTEX degradation.
研究领域:
环境科学
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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
Journal of Environmental Sciences
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2023
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IF 6.9
Yue Lu,Fangyi Liang,Fanzhi Qin,Linrui Zhong,Jianhong Jiang,Qi Liu,Shoujuan Zhang,Ming Yan,Changzheng Fan,Haoran Dong
The dehalogenation of organohalides has been a research hotspot in bioremediation field; however, the influence of tourmaline, a natural ore that can generate spontaneous electric field, on organohalide-respiring bacteria (OHRB) and their dechlorination process is not well known. In this study, the effect and mechanism of tourmaline on the reductive dechlorination of 2,3-dichlorophenol (2,3-DCP) by Desulfitobacterium hafniense DCB-2 T were explored. The characterization results confirmed that tourmaline had good stability and the optimal dosage of tourmaline was 2.5 g/L, which shortened the total time required for dechlorination reaction to 72 hr. Besides, tourmaline amendment also increased the proportion of 2-chlorophenol (2-CP) from 18% to 30% of end products, while that of 3-CP decreased correspondingly. The theoretical calculations showed that the bond charge of the ortho -substituted chlorine declined from -0.179 to -0.067, and that of meta -substituted chlorine increased from -0.111 to -0.129, which indicated that the spontaneous electric field of tourmaline affected the charge distribution of 2,3-DCP and was more conducive to the generation of 2-CP. Overall, tourmaline with the spontaneous electric field affected the reductive dechlorination pathway of Desulfitobacterium ,and the tourmaline-OHRB combining system might serve as a novel strategy for the bioremediation of environments polluted with chlorinated phenols.
研究领域:
环境科学
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微生物学
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产品关联
DOI
PubMed
高影响因子
Nano Today
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2024
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IF 13.2
Yuan Yu,Menggang Li,Miao Sun,Zhaolin Yang,Yifan Liu,Senwei Hu,Jiazuo Zhou,Yudong Li,Haiyue Yang,Chengyu Wang
The exceptional potential of MXene aerogels for practical applications is impeded by the energy-intensive processing and insufficient mechanical stability. Inspired by natural bones, herein, we report the MXene@regenerated nanocellulose aerogel (MRCA) with strong mechanical performance via dual aerogel fabrication to achieve high-performance energy generation and storage. The MRCA achieves a gravimetric capacitance of 1271.16 F g −1 at 2 mA cm −2 , and the energy density of the eco-friendly symmetrical MRCA-based solid-state supercapacitor reaches 0.11 mWh cm −2 , positioning it as a top contender among most state-of-the-art MXene-based electrodes. Additionally, the MRCA exhibits a robust specific tensile strength of 68.35 MPa cm 3 g −1 , resembling bone-like resilience. Therefore, MRCA can swiftly generate an open-circuit voltage of 181.24 V. The instant high voltage of MRCA transforms into diverse signals, driving MRCA-SC to release energy for electric devices in practical scenarios, paving the way for future sustainable power systems.
研究领域:
材料科学
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能源工程
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仿生学
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产品关联
DOI
高影响因子
ACS Biomaterials Science & Engineering
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2016
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IF 0
Zi-Fei Zhou,Fan Zhang,Jian-Guang Wang,Quan-Chi Chen,Wei-Zhi Yang,Ning He,Ying-Ying Jiang,Feng Chen,Jun-Jian Liu
Peripheral nerve injuries represent a great challenge for surgeons. The conductive neural scaffold has experienced increasing interest because of its good biocompatibility and similar electrical properties as compared to those of a normal nerve. Herein, nerve conduits made from poly(d,l-lactide)-co-poly(ethylene glycol) and polypyrrole (20%, 30%, and 50%) (PELA–PPY) were prepared by electrospinning, and used in regeneration of peripheral nerve defects. The results of an in vitro experiment indicated a high biocompatibility for the as-prepared materials, supporting the attachment and proliferation of a rat pheochromocytoma PC-12 cell. Furthermore, the PELA–PPY nerve conduit implanted in the sciatic nerve defects (10 mm) of the Spraguee–Dawley rats for 12 weeks showed similar results with the autograft, while it demonstrated a better outcome than the PELA nerve conduit in electrophysiological examination, sciatic function index, total amount of regenerated myelinated nerve fibers, axon diameter, myelin thickness, and several immunohistochemistry indices (S-100, laminin, neurofilament, bromodeoxyuridine, and glial fibrillary acidic portein). We supposed that the bioactivity is mainly generated by the PPY in composite nanofibers which could transmit self-originated electrical stimulation between cells. Due to the facile preparation and excellent in vivo performance, the PPY–PELA nerve conduit is promising for use as a bioengineered biomaterial for peripheral nerve regeneration.
研究领域:
生物医学工程
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神经科学
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材料科学
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产品关联
DOI
PubMed
SEPARATION AND PURIFICATION TECHNOLOGY
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2020
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IF 5.774
Zhongde Wang,Sihang Tian,Junjian Niu,Wei Kong,Jianying Lin,Xiaogang Hao,Guoqing Guan
Desalination is an important way to provide fresh water for our life. In this study, an electrochemically switched ion exchange (ESIX) process based on self-electrical-energy recuperation concept was designed and realized for desalination, in which the self-generated electricity could provide the required energy for the ESIX process. As iron hexacyanoferrate (FeHCF) and polypyrrole (PPy) were used as electroactive Na + and Cl − ion exchange materials respectively, NaCl was successfully removed from the aqueous solution with a low energy consumption of 0.14 kWh·m −3 and a high ion exchange capacity of 79.6 mg·g −1 . Moreover, the system also exhibited an excellent stability. It is expected that such an ESIX process with self-electrical-energy recuperation could enable more efficient desalination applications.
研究领域:
环境科学
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材料科学
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能源工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2024
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IF 8.3
Xiaoyong Yu,Wenjin An,Linnan Jiang,Wenwen Xu,Zhenkai Qian,Lihua Wang,Yong Chen,Yu Liu
Supramolecular flexible electronic devices are one of the research hotspots due to their application in the fields of chemistry, biology, and materials. Herein, we reported a slide-ring supramolecular flexible electronic device, which is constructed by acrylamide (AAm), acrylic acid (AA), carboxymethyl-α-cyclodextrin (CM-α-CD), PEG20000 diacrylate (PEG20000DA), and calcium chloride via the photoinitiated polymerization, displaying not only the mechanical force-responded self-generation but also the human–computer information transfer. As compared with the polymer hydrogel, the addition of α-CD polypseudorotaxane to the hydrogel has notably enhanced both the tensile length and the tensile toughness, making it more suitable for flexible electronic device applications. The hydrogel can be stretched to ca. 15 times its original length and quickly recovers after the external force is removed. In addition, it also exhibits a conductivity of 0.21 S/m, demonstrating good electrical conductivity. Significantly, based on the slide-ring supramolecular array for energy harvesting, it can generate an open-circuit voltage of 420 V using the contact separation method for testing, which can be used as a flexible electronic device for human–computer information transfer.
研究领域:
材料科学
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化学
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生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2022
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IF 14.224
Hafiz Muhammad Adeel Sharif,Muhammad Bilal Asif,Yuwei Wang,Ya-Nan Hou,Bo Yang,Xu Xiao,Changping Li
Iron (Fe)-based catalysts are widely used for taming nitrogen oxides (NO x ) containing flue gas , but the regeneration and long-term reusability remains a concern. The reusability can be acquired by external additives, and resultantly can not only increase the cost but can also add to process complexity as well as secondary pollutants. Herein, a self-sustainable material is designed to regenerate the catalyst for long-term reusability without adding to process complexity. The catalyst is based on reduced graphene-oxide impregnated by Fe 2 O 3 -MnO (rGO@Fe 2 O 3 -MnO; G-F-M) for spontaneous intra electron (e - )-transfer from Mn to Fe. The developed catalyst; G-M-F exhibited 93.7% NO x reduction, which suggests its high catalytic activity . The morphological and structure characterizations confirmed the Fe/Mn loading, contributing to e - -transfer between Mn and Fe due to its conductivity. The synthesized G-F-M showed higher NO x reduction about 2.5 folds, than rGO@Fe 2 O 3 (G-FeO) and rGO@MnO x (G-MnO x ). The performance of G-M-F without and with an electrochemical system was also compared, and the difference was only 5%, which is an evidence of the spontaneous e - transfer between the Mn and Fe-NO x complex. The designed catalyst can be used for a long time without external assistance, and its efficiency was not affected significantly (<3.7%) in the presence of high oxygen contents (8%). The as-prepared G-M-F catalyst has great potential for executing a dual role NOx removal and self-regeneration of catalyst (SRC), promoting a sustainable remediation approach for large-scale applications.
研究领域:
环境科学
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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）