ELECTROCHIMICA ACTA
·
2019
·
IF 5.383
Suqi Huang,Zili Cui,Lixin Qiao,Gaojie Xu,Jianjun Zhang,Kun Tang,Xiaochen Liu,Qinglei Wang,Xinhong Zhou,Botao Zhang,Guanglei Cui
Due to the ex-situ assembly technology of solid-state electrolyte, solid-state lithium batteries commonly show a poor electrolyte/electrode interfacial contact. Herein, we report an in-situ polymerized poly (tetrahydrofuran) (PTHF)-based solid polymer electrolyte (PTSPE) to resolve the poor interfacial contact problem in solid state lithium batteries . The in-situ formed PTSPE exhibits a high ionic conductivity (2.3 × 10 −4 S cm −1 ) and a wide electrochemical window (4.5 V) at 60 °C. More importantly, the in-situ formed PTSPE improves interfacial compatibility remarkably, suppressing the growth of lithium dendrites . It is revealed that boron trifluoride initiator works as functional additive to form LiF and B-O species at interface layer of lithium metal anode , alleviating lithium dendrites growth and undesired parasitic reactions. An as-assembled LiFePO 4 /Li cell employing this in-situ formed PTSPE delivers a high discharge capacity of 142.3 mA h g −1 even after 100 cycles. The aforementioned results suggest that the in-situ polymerization technology of solid-state electrolyte is very promising for high-performance solid-state lithium batteries.
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DOI
高影响因子
DESALINATION
·
2022
·
IF 11.211
Xiaohui Liu,Ning Liu,Chengyao Zhao,Qi Liu,Yujing Liu,Zhongqiu Liu,Anguo Ying
Lithium extraction from seawater/brine to enrich the available global lithium resources is key to the development of energy storage and water desalination . Understanding the Li + extraction mechanism in hard carbon has been a topic of debate because of its complex structure. In this work, polyimide-based carbon microsphere (PCMs) organized by ultralong nanowires was fabricated for the first time by solvent polarity induced interface self-assembly strategy. Examined as the electrode, the assembled device delivers a high Li + extraction capacity of ~34.55 mg g −1 in LiCl solution and highly selective rapid transport in simulated Qarhan Salt Lake old brine, which is very competitive among the reported data. It is demonstrated that the Li + ion extraction behavior in PCMs is an “adsorption-intercalation/filling” hybrid mechanism, similar to that of in batteries system. The simulation calculations further reveal that specific adsorbed sites and confined channels in PCMs dominate the Li + ion-selective permeation behavior. This work provides a solvent polarity induced interface self-assembly strategy to develop polyimide-based hard carbon for electrochemical desalination and underlies the Li + ion extraction mechanism, offering a general hard carbon design concept.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 33
·16035-16039
·
IF 3.925
Jing Zhang,Chunlei Li,Xingzhi Jin,Yi Zheng
Shape anisotropic semiconductors are advanced catalysts for resolving energy crises. However, modification studies are still needed to overcome their intrinsic disadvantages, such as the lack of active sites. With this aim, an excellent hydrogen evolution photocatalyst Rh@Cr2O3-loaded PbMoO4 twenty-six facet polyhedron (PM/Rh@Cr2O3) has been synthesized by a liquid method. Based on XPS, electrochemical investigation and hydrogen evolution reaction (HER) test, it is demonstrated that Rh acts as an electron collector and active site; moreover, Cr2O3 can assist Rh in the dissociation of water. In addition, Cr2O3 can also inhibit the reverse reaction of water splitting as well as the mass transfer of water. In conclusion, the H2 yield rate increased from 0 μmol g−1 h−1 of PbMoO4 (PM) to 704 μmol g−1 h−1 of PM/Rh@Cr2O3, and PM/Rh@Cr2O3 exhibited excellent photo-stability.
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高影响因子
CHROMATOGRAPHIA
·
2021
·Vol. 84
·期 5
·463-471
·
IF 2.044
Huang Xiaofen,Zhang Qin,Li Xianbo,Ao Xianquan,Wang Xuming
Alkyl amines are surfactants used as quartz collectors in the reverse flotation of phosphate ores. It is important in both research and industrial practice to quantify amine concentration in the solution and/or wastewater. A simple and rapid method using high-performance liquid chromatography (HPLC) was developed to quantitatively determine the concentration of amine collectors (including dodecylamine, tetradecylamine, hexadecylamine, and octadecylamine) in a mineral flotation system. The method involved a sample derivatization procedure with 9-fluorenyl methoxycarbonyl chloride (FMOC-Cl) and separation/determination by HPLC coupled with a fluorescence detector. The calibration curves showed good linearity ( R 2 > 0.9956) in the range of 0.20–5.00 µg/mL, and the recoveries of dodecylamine, tetradecylamine, hexadecylamine, and octadecylamine were in the ranges of 84.93–97.64%, 89.93–101.92%, 85.29–98.37%, and 93.57–103.26%, respectively. The method was successfully used to quantify amines in wastewater from flotation experiments and artificial flotation wastewater (amine solution after activated carbon adsorption). The results from the analysis of four amines in the solution demonstrated that the proposed method is suitable for the simultaneous determination of amines in flotation pulp and wastewater.
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高影响因子
Aggregate
·
2024
·
IF 13.9
Ruihua Dong,Mian Chen,Yuexiao Jia,Hao Tang,Ziyin Xiong,Yunze Long,Xingyu Jiang
Acute and infected wounds resulting from accidents, battlefield trauma, or surgical interventions have become a global healthcare burden due to the complex bacterial infection environment. However, conventional gauze dressings present insufficient contact with irregular wounds and lack antibacterial activity against multi-drug-resistant bacteria. In this study, we develop in situ nanofibrous dressings tailored to fit wounds of various shapes and sizes while providing nanoscale comfort and excellent antibacterial properties. Our approach involves the fabrication of these dressings using a handheld electrospinning device that allows for the direct deposition of nanofiber dressings onto specific irregular wound sites, resulting in perfect conformal wound closure without any mismatch in 2 min. The nanofibrous dressings are loaded with multi-armed antibiotics that exhibit outstanding antibacterial activity against Staphylococcus aureus ( S. aureus ) and methicillin-resistant S. aureus . Compared to conventional vancomycin, this in situ nanofibrous dressing shows great antibacterial performance against up to 98% of multi-drug-resistant bacteria. In vitro and in vivo experiments demonstrate the ability of in situ nanofibrous dressings to prevent multi-drug-resistant bacterial infection, greatly alleviate inflammation, and promote wound healing. Our findings highlight the potential of these personalized nanofibrous dressings for clinical applications, including emergency, accident, and surgical healthcare treatment.
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高影响因子
Journal of Flow Chemistry
·
2021
·Vol. 12
·期 2
·153-160
·
IF 2.786
Liu Lanshan,Hong Xinlin,Hu Xiaohong
4-pyridinemethanol is well known as an important pharmaceutical intermediate and chemical raw material. Its preparation by electrochemical method has seen a recent explosion of interest. In this paper, we report the synthesis of 4-pyridinemethanol by electrochemical reduction of ethyl isonicotinate using an undivided flow electrolysis cell. The experiments were conducted under different conditions, including applied charge, initial concentration of ethyl isonicotinate and H 2 SO 4 , current density, and electrode materials. The yield of 4-pyridinemethanol reached up to 71 % under the optimal conditions. The oxidation of target product was avoided by using Ti/IrO 2 anode in the absence of membrane separation. Furthermore, the repeat cycle experiments and cyclic voltammetric experiments showed that this approach possessed good reproducibility and stability.
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高影响因子
CATALYSIS TODAY
·
2015
·
IF 3.893
Faheem Nawaz,Yongbing Xie,Hongbin Cao,Jiadong Xiao,YueqiuWang,Xihua Zhang,Mingjie Li,Feng Duan
Two series of α-MnO 2 materials were prepared via a similar method with surfactant cetyltrimethylammonium bromide (CTAB) and sodium dodecyl benzene sulfate (SDBS). The surfactants work both as shape directing agent and reduction initiator. The α-MnO 2 synthesized with 0.2 M of CTAB showed a mesoporous structure with high surface area of 387.7 m 2 /g. It is very active in catalytic ozonation of 4-nitrophenol (4-NP) and total organic carbon removal, with higher catalytic stability than commercial MnO 2 . Using tert -butanol and p -benzoquinone as scavengers of different oxidative species, we found that superoxide radicals, rather than hydroxyl radicals, were mainly responsible for the degradation of 4-NP.
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高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Yichuan Li,Guofu Zhu,Yu Wang,Yongming Chai,Chenguang Liu,Shengbao He
Oriented molecular sieve membranes prepared on the surface of a specifically shaped substrate have been applied in the separation and catalysis process, but there is no report on the directional growth of molecular sieve membranes on the surface of spherical substrates. Here, a simple in situ crystallization method was employed to successfully prepare a single layer of b-oriented continuous titanium silicalite-1 (TS-1) molecular sieve membrane on the surface of 2-mm alumina beads. First, a titania intermediate layer was loaded on the surface of beads by the dipping method, and the surface was then modified with the TBOT modification solution. The ratio of the precursor solution was n(TEOS):n(TBOT):n(TPAOH):n(H 2 O) = 1:0.010:0.15:40 and was crystallized at 180 °C for 72 h to prepare the membrane. The content of the templating agent and water affected the size of TS-1 crystal grains and membrane crosslinking—both in turn influenced the continuity and orientation of the molecular sieve membrane. Spherical membrane catalyst was applied to catalyze the epoxidation of chloropropene in a fixed bed reactor, and the conversion of hydrogen peroxide and selectivity of epichlorohydrin attained 87.4% and 93.2%, respectively. This work provides a foundation for the design of novel TS-1 immobilized catalyst.
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高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Yadong Yu,Kangren Kong,Zhao Mu,Yueqi Zhao,Zhaoming Liu,Ruikang Tang
Inspired by inorganic oligomers and their polymerization, we herein develop a heterogeneous inorganic polymerization tactic that can be used to prepare a muscle-like hybrid hydrogel by inducing the polymerization of calcium phosphate oligomers (CPO) onto a polyvinyl alcohol (PVA) molecular chain network. In this heterogeneous process, the CPO units bond with PVA molecules via assistance from sodium alginate (SA), and then gradually polymerize along the organic chains to form ultrafine hydroxyapatite nanolines with a diameter of ∼1 nm. Because of the well integration of organic and inorganic phases from the heterogeneous polymerization, the hierarchical structured hydrogel can exhibit ultratough mechanical properties of ∼17.84 MPa in strength and ∼8.97 kJ m–2 in fracture energy, which exceed natural muscles and almost synthetic hydrogels. Moreover, the damaged hydrogel can be repaired readily by adding the precursors of CPO, PVA, and SA, which can induce in situ re-polymerization. The hydrogel also exhibits muscle-like rotational motion under aqueous conditions, which can be developed into a water-driven biomimetic motor. This study indicates that inorganic polymerization can achieve a novel organic–inorganic integration rather than conventional organic–inorganic composition, and it provides a novel tactic for design and manufacture of advanced materials.
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DOI
PubMed
高影响因子
Analytical Methods
·
2015
·Vol. 7
·期 9
·3883-3887
·
IF 1.821
Hao-Ming Lv,Yi Chen,Jian Lei,Chak-Tong Au,Shuang-Feng Yin
Nitroxyl is a highly reactive compound that irreversibly dimerizes and subsequently dehydrates to yield nitrous oxide and water, making its direct detection in cells or in vivo difficult. In this paper, a novel fluorescent probe 1 based on the excited state intramolecular proton transfer (ESIPT) mechanism for the detection of nitroxyl was developed for the first time. It consists of 2-(2′-hydroxyphenyl)-benzothiazole as the fluorophore, linked via an ester moiety to a diphenylphosphinobenzoyl group. The probe exhibited high sensitivity and selectivity toward nitroxyl in the presence of biologically relevant species. Moreover, the potential for biological applications of the probe was confirmed by employing it for fluorescence imaging of nitroxyl in living cells.
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高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Zhi Jiang,Hezhuang Liu,Jihua Zou,Yixuan Huang,Zhaoquan Xu,Caihong Li,Desheng Liu
With the rapid advances in metal halide perovskite optoelectronics, eliminating toxic lead from perovskites has been an urgent demand. However, state-of-the-art lead-free perovskite photodetectors are still challenged with issues of low photoresponse, poor stability, etc. Here, all-inorganic lead-free perovskite (Cs3Cu2I5) single crystals that possess good stability under air exposure are synthesized via a facile solid reaction method. Meanwhile, a higher photoluminescence quantum yield of 95.2% and a prolonged carrier lifetime of 1.127 μs are obtained by further optimizing the synthesis. Benefiting from the polyporous surface and hollow structure of Cu-7,7,8,8-tetracyanoquinodimethane (CuTCNQ) microtubes, more Cs3Cu2I5 nanocrystals can adhere on the innershell and outershell of CuTCNQ-15 microtubes. This unique structure contributes to the improved efficiency of utilizing incident light and promotes charge carrier generation and transportation. As a result, the hierarchical CuTCNQ/Cs3Cu2I5 (hollow microtube/nanocrystal) heterostructure phototransistor exhibits a high responsivity of 88.36 A W–1 and a large detectivity of 1.66 × 1012Jones. The proposed lead-free perovskites and mixed-dimensional heterojunctions are promising for sensitive light detection.
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高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2015
·
IF 2.337
Zhen Song,Teng Zhou,Jianan Zhang,Hongye Cheng,Lifang Chen,Zhiwen Qi
When applying ionic liquids (ILs) for solvent-sensitive extraction systems, ILs dissolved in the raffinate may lead to severe subsequent problems or a significant reduction in product quality, and thus should be particularly concerned. To screen qualified IL solvent for such systems, a rigorous criterion considering both its solubility in the raffinate and extractive ability is established. The COSMO-RS model is used to evaluate the effect of anions and cations, and suggest potential ILs meeting the criterion. Afterwards, the solubility and extractive ability of candidate ILs are investigated by experiments to further confirm their suitability. The proposed solvent screening method is exemplified for the extractive desulfurization process. [C 4 mim][H 2 PO 4 ] is pre-selected by the screening method, and its high extractive performance is experimentally verified.
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高影响因子
危险品化学品经营许可证（带存储）