ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Liang Ren,Jianxin Chen,Qing Lu,Jian Han,Hong Wu
Membrane fouling, caused by aggregation of organics and microorganisms from filtrate on the membrane surface, seriously reduces the service life of a nanofiltration (NF) membrane. Developing facile and renewable antifouling modification methods without sacrificing separation properties of the membrane remain an imperative requirement. Herein, a thin-film composite (TFC) NF membrane with a light-responsive and regenerable functional layer (P-TFC) was fabricated via host–guest interactions between the azobenzene (guest) labeled functional polymers and the β-cyclodextrin (host) bonded membrane surface (H-TFC). The P-TFC-3 not only showed outstanding antifouling ability and high flux recovery ratio (FRR > 90% at the fourth antiadhesive test) but also exhibited enhanced water permeability (17.9 L m–2 h–1 bar–1) and high selectivity (αMgSO4NaCl = 33.4 and fast antibiotics enrichment capacity) compared with the pristine membrane. Furthermore, when the functional layer was contaminated, it can be removed by ultraviolet light irradiation and a new functional layer can be rebuilt by adding fresh azobenzene labeled functional polymers. After several regeneration processes, the membranes still showed constant separation properties and high flux recovery ability (FRR > 90%). This work proposes an easy-to-assemble and regenerable surface modification strategy to endow TFC NF membranes with excellent fouling resistance and sustainable utilization ability while maintaining high separation properties.
研究领域:
材料科学
·
环境工程
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2021
·
IF 8.742
Lu Bai,Min Wang,Zhilu Li,Hongjun Yang,Zhengjun Peng,Youjing Zhao
The functional layer of nanofiltration (NF) membrane greatly affects its application in acid solutions, therefore the design and fabrication of functional layer have become the spot of light. A feasible method was developed to fabricate a novel functional layer of composite NF membrane with excellent acid-resistance and separation performance via the selective bond dissociation method. Briefly, dissociation bonds were formed through the interfacial polymerization of polyethyleneimine (PEI) and cyanuric chloride (CC) on the polyethersulfone substrate (PES). Glutaraldehyde (GA) was subsequently applied to cross link with unreacted amino groups of PEI. Finally, the structure of the functional layer of AGA-PEI/CC (Acid-immersed GA-PEI/CC) NF membrane was manipulated into an inhomogeneous structure by immersing the membrane prepared in the above two steps in acid solutions to remove CC molecules. The fabricated AGA-PEI/CC exhibited excellent rejection, water flux and acid-environment stability owing to the unique structure of the functional layer fabricated by selective bond dissociation method. The rejection order was Mn 2+ (97.97%) > Mg 2+ (97.48%) > Zn 2+ (95.15%) > Cu 2+ (94.45%) > Al 3+ (87.40%). The AGA-PEI/CC membrane exhibited structural stability after 2 months 0.1 mol L −1 HNO 3 solutions tests, the water flux and MgCl 2 rejection rate variation rate was −1.19% and +4.98%. We provided a potential strategy to synthesize acid-resistance NF membrane with desired separation performance by the selective bond dissociation method, and enriching the application of NF membrane in an acid environment.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Yichao Zhuang,Dongzheng Wu,Fei Wang,Yaoqi Xu,Jing Zeng,Jinbao Zhao
The development of high-voltage Mg metal batteries is hampered by the incompatibility between a Mg metal anode and conventional electrolyte, leading to a high overpotential for Mg plating/stripping processes. In this work, we tailored a hybrid functional layer consisting of Bi/MgCl2/polytetrahydrofuran (PTHF) by an in situ THF polyreaction during the reaction of the Mg anode with BiCl3 solution. The introduction of PTHF inhibits the growth of Bi particles and fills the layer interstice with MgCl2-containing PTHF, improving the structural integrity of the functional layer and insulation between the electrolyte and Mg anode. As a result, compared to a simply modified Bi/MgCl2 layer, the Bi/MgCl2/PTHF functional layer exhibits a lower polarization voltage of 0.25 V and longer cycling life of more than 2000 h at 0.1 mA cm–2. Mechanism analysis shows that Mg is plated on the surface of Bi particles within the layer. The Mo6S8/Mg full battery with the hybrid functional layer achieved a low voltage hysteresis of ∼0.25 V and long cycling life over 500 cycles at 50 mA g–1. This work provides a facile and effective hybrid functional layer strategy to realize Mg metal batteries in conventional electrolytes.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2023
·
IF 9.5
Yuyang Yao,Yan Zhang,Yundi Dong,Keqin Ruan,Yifei Shao,Geting Xu,Junbin Liao,Zhenlu Shen,Jiangnan Shen
Biofouling is one of significant obstacles decaying the high separation performance and long-term stability of polymer membranes during the application. To explore the desirable anti-biofouling anion exchange membrane (AEM), in this work, a series of modified AEMs having surface antibacterial functional layers on surface has been prepared by using gentamicin and N-chloramine for electrodialysis (ED). The antibacterial functional layer on surface was constructed via chemical assembly. By using CuSO 4 and H 2 O 2 as the trigger, l -dopa was oxidized on surface of commercial AEM (Fuji type II) to form a carboxyl layer. Thereafter, gentamicin was chemically assembled via the amide condensation reaction . It was chlorinated with diluted NaClO solution to endow it with synergistic antibacterial activity by using gentamicin. Investigation demonstrates that the optimized membrane of P( l -Dopa)@GM-Cl has high antibacterial activity against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli). Among them, flow cytometry shows that the antibacterial rate of P( l -Dopa)@GM-Cl against E. coli is more than 99%, which is much higher than original membrane (28.4%). P( l -Dopa)@GM-Cl exhibits the enhanced performance in inhibiting biofilm observed by scanning electron microscopy analysis . This work may provide a reference for the construction of anti-biofouling ion exchange membrane.
研究领域:
材料科学
·
微生物学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2022
·
IF 9.224
Ziwei Zheng,Junmeng Jing,Haorui Yu,Zhibin Yang,Chao Jin,Fanglin Chen,Suping Peng
Designing an efficient cathode and an accelerating sluggish oxygen reduction reaction (ORR) process are crucial to enhancing electrochemical outputs for solid oxide fuel cells (SOFCs). A novel multifunction layer (MFL) cathode that combines the Gd0.2Ce0.8O2−δ (GDC) interlayer with a La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) cathode functional layer is reported. After precisely controlling the concentration of an infiltration precursor solution, discrete and filmy LSCF on the GDC scaffold (MFL-D and MFL-F) can be prepared. Compared with the discrete-coating of LSCF (MFL-D), the film-like coating of LSCF (MFL-F) exhibits a lower initial polarization impedance of 0.093 Ω cm2 at 750 °C. The as-obtained SOFCs produce an enhanced peak power density of 0.93 W cm–2 and have successfully been operated at 0.5 A cm–2 for 400 h with a voltage degradation of only 16 mV. Oxygen ion transport model of the MFL-F is constructed and discussed. This work provides an important insight into designing efficient cathode for SOFCs.
研究领域:
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
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
·
2020
·Vol. 44
·期 6
·4933-4943
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IF 3.741
Songwei Li,Shengli Pang,Xiao Wu,Xinye Qian,Shanshan Yao,Maoxiang Jing,Tianbao Li,Chonglin Chen,Xiangqian Shen
Summary The electronic nonconductivity of S and shuttle effect of soluble polysulfides are two fundamental issues that limit the application of lithium-sulfur (Li-S) batteries. Regarding these issues, herein, a sponge-like Ketjen black (KB)-triphenylphosphine sulfide (TPS) multifunctional modification layer was proposed to coat the separator of the advanced Li-S batteries. The layer was formed by an in situ spontaneous reaction between triphenylphosphine (TPP) of the conventional KB-TPP layer and Li 2 S 6 solution. This functional layer can ensure a high e − and Li + conductivity while inhibiting the diffusion of soluble polysulfides. As a result, the redox activity, rate capability, and cycling stability of the batteries are significantly enhanced. Comparing with the discharge capacities at 2C for the PE separator, introducing the KB-TPS functional layer was beneficial for the capacity retentions of the cells, since the capacity increased from 16.1% to 66.6% at the same C-rate. A capacity degeneration rate of 0.045% per cycle was obtained for the cell with an S area density of 3.6 mg cm −2 . This work is a step forward in the exploration of advanced Li-S batteries, being a valuable reference for the study of related systems.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Chemistry
·
2023
·
IF 7.3
Xiang Li,Tian Xia,Ziwei Dong,Jingping Wang,Qiang Li,Liping Sun,Lihua Huo,Hui Zhao
To address the impacts of anion doping, F-doped layered double perovskites (Pr 1.1 Ba 0.9 Co 2 O 5+ δ F x ) have been synthesized, demonstrating bifunctional activity in both solid oxide fuel cell and solid oxide electrolysis cell models. The F doping induces increased oxygen vacancy concentration and enhanced electrical conductivity . Combined with spherical aberration-corrected transmission electron microscopy and X-ray photoelectron spectroscopy analyses, the F − anions are successfully introduced into the host lattice, promoting the oxygen surface exchange/diffusion rates. From the density functional theory calculations, the covalence between Co 3d and O 2p-orbital is enlarged in the F-doped model, and both oxygen reduction reaction and oxygen evolution reaction activities are improved. The area-specific resistance of the Pr 1.1 Ba 0.9 Co 2 O 5+ δ F 0.1 (P 1.1 BCOF 0.1 ) electrode is as low as 0.033 Ω/cm 2 at 700 °C. The P 1.1 BCOF 0.1 cathode-based fuel cell delivers a peak power density of 1102 mW/cm 2 , along with an excellent operating stability at 700 °C. Moreover, the current density of 1335 mA/cm 2 is achieved in the P 1.1 BCOF 0.1 anode-based electrolysis cell at 1.8 V toward CO 2 reduction reaction at 750 °C. These results here highlight the performance origin and bifunctional activity of fluorine-doped perovskite materials, which may help us rationally design the oxide catalysts.
研究领域:
材料科学
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能源化学
·
催化科学
✓ 已验证
产品关联
DOI
高影响因子
DESALINATION
·
2023
·
IF 9.9
Pei Xiao,Xin Li,Lei Li,Fei Liu,Yi (Alex) Wang,Jian Li
Applications of environmentally friendly and low-cost biomaterials for membrane preparation offer unparalleled advantages over traditional synthetic polymer membrane. Herein, a novel collagen/casein/chitosan composite material was designed to synthesize TFC membrane for acid recovery from acidic waste stream. A vacuum filtration method was used to precious adjust the thickness of the functional layer while glutaraldehyde was adopted as crosslinking agent to preserve surface charge property of anion-exchange membranes (AEM) at acidic conditions. The electrostatic interactions and hydrogen bonding of these biopolymers endowed the TFC membrane with enhanced stability. At optimized conditions with 0.15 mL collagen/casein/chitosan composites decoration, the TFC membrane with a functional layer thickness of around 628.4 nm exhibited an excellent acid permeance (U H + = 0.034 m h −1 ) and a high H + / Fe 2+ separation factor up to 33.8. This facile strategy provides a useful guideline for constructing highly efficient TFC membrane for acid recovery and broadens the application of biomaterials for membrane application at harsh environments.
研究领域:
生物材料学
·
膜科学与技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Weibing Li,Liming Wang,Jie Zhou,Ning Wang,Xinyang Fu,Yibo Wang,Yuyu Bu,Yaping Zhang,Lei Wang
Currently, the sluggish charge transfer kinetics and water oxidation kinetics are still the bottlenecks faced by BiVO 4 photoanodes at present. Herein, an excellent Zn@Co 3 C functional layer is reported for the first time to tackle these problems of BiVO 4 photoanode. Zn@Co 3 C was prepared using a facile electrochemical method with 1,2-dimethylimidazole as a carbon source. In the BiVO 4 /Zn@Co 3 C photoanode, Co 3 C acts as a novel oxygen evolution co-catalyst to significantly enhance water oxidation kinetics. An electron depletion layer formed around Zn species provides a strong driving force for the migration of photogenerated holes from BiVO 4 to Co 3 C catalytic sites. Furthermore, the alternating distribution of Co 3 C and Zn species on the surface of BiVO 4 photoanodes increases the utilization efficiency of Co 3 C co-catalyst. The BiVO 4 /Zn@Co 3 C system constructed in this work not only demonstrates good photoelectrochemical performance in electrolytes (4.6 mA cm −2 at 1.23 V vs. RHE without any hole scavengers), but also enables water splitting in natural seawater. This work demonstrates a novel functional layer that simultaneously facilitates photogenerated carrier transfer and water oxidation kinetics, which holds great promise for constructing high-performance water oxidation systems in various photoanodes.
研究领域:
材料科学
·
能源科学
·
催化科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2023
·
IF 17.1
Weibo Huang,Yan Wang,Linze Lv,Xiang Li,Yueyue Wang,Wei Zheng,Honghe Zheng
The silicon (Si) anode is widely recognized as the most prospective next-generation anode. To promote the application of Si electrodes, it is imperative to address persistent interface side reactions caused by the huge volume expansion of Si particles. Herein, we introduce beneficial groups of the optimized binder and electrolyte on the Si surface by a co-dissolution method, realizing a “trinity” functional layer composed of azodicarbonamide and 4-nitrobenzenesulfonyl fluoride (AN). The “trinity” functional AN interfacial layer induces beneficial reductive decomposition reactions of the electrolyte and forms a hybrid solid–electrolyte interphase (SEI) skin layer with uniformly distributed organic/inorganic components, which can enhance the mechanical strength of the overall electrode, restrain harmful electrolyte depletion reactions, and maintain efficient ion/electron transport. Hence, the optimized Si@AN11 electrode retains 1407.9 mAh g–1 after 500 cycles and still delivers 1773.5 mAh g–1 at 10 C. In stark contrast, Si anodes have almost no reserved capacity at the same test conditions. Besides, the LiNi0.5Co0.2Mn0.3O2//Si@AN11 full-cell maintains 141.2 mAh g–1 after 350 cycles. This work demonstrates the potential of developing multiple composite artificial layers to modulate the SEI properties of various next-generation electrodes.
研究领域:
材料科学
·
电化学
·
电池技术
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Jiahao Chen,Miao He,Anjun Hu,Mengjiao Liu,Chuan Zhao,Bo Zhou,Runjing Li,Zhongfu Yan,Yu Pan,Yining Fan,Jing Liu,Liujun Cao,Jianping Long
Rechargeable aqueous zinc-ion hybrid supercapacitors (ZHSs) are drawing extensive attention because of their cost-effectiveness and diminished safety hazards. Nevertheless, large-scale application of ZHSs has been hindered by the severe side reactions and rampant dendrites growth on the surface of Zn metal anodes. Herein, we propose a three-dimensional organic–inorganic composite frame material as an artificial bi-functional layer coated on the zinc foil, featuring nitrogenous functional groups with zincophilicity (abbreviated as NCFM@Zn). The nitrogen (N) site's strong adsorption capacity and synergistic effect of the sub-nanopore size promote rapid desolvation of zinc ions and reduce side reactions, while also prolonging galvanized nucleation's Sand's time and allowing for even nucleation. Moreover, the uniform distribution of N on the layer results in homogeneous zinc ions flux and supports consistent zinc plating while inhibiting dendrites generation. As a result of this unique artificial bi-functional layer, symmetric Zn cells can survive 2500 h at 2.5 mA cm −2 . High-areal-capacity zinc||activated carbon hybrid supercapacitors also demonstrate 20,000 cycles at high Coulombic efficiency, thus highlighting the utter convenience and potential of this strategy for modifying rechargeable metal hybrid supercapacitor surfaces.
研究领域:
材料科学
·
电化学
·
储能
·
超级电容器
✓ 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）