JOURNAL OF MATERIALS RESEARCH
·
2015
·Vol. 30
·期 21
·3201-3210
·
IF 1.647
Wenping Guo,Zhongli Lei
Herein, we present a method for introducing β-cyclodextrin (β-CD) and Ferrocene (Fc) into the main chain of poly(acrylic acid) (PAA) to fabricate a novel supramolecular polymer, which was investigated by Fourier transform infrared spectroscopy and 1H Nuclear Magnetic Resonance (1H NMR). This polymer can self-assemble into interesting nanoparticles in aqueous solution. The redox-responsive Fc–CD host–guest interactions endow these nanoparticles with unique self-degradable and self-healable features under redox potential control. This redox behavior of the supramolecular polymer would open up an approach for redox-controlled biological materials with great application potential.
研究领域:
材料科学
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生物医学工程
·
化学
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产品关联
DOI
高影响因子
POLYMER
·
2022
·
IF 4.432
Huan Li,Yingying Li,Yudan Wang,Lijia Liu,Hongxing Dong,Chunhong Zhang,Toshifumi Satoh
Diseases caused by bacterial infections continue to threaten human health around the world. Antimicrobial hydrogels with excellent properties have been developed in biomaterial and other fields in some cases, where overuse or inappropriate use of antibiotics has led to increased bacterial resistance. In this study, primary amines that are rich in lysine end groups were used to synthesize Lys-BPEA crosslinker. An antibacterial self-healing hydrogel (labeled as polyacrylic acid [PAA/]/Lys-BPEA) was prepared by introducing polyamine Lys-BPEA into PAA via ionic bonding and electrostatic interaction . The surface morphology and mechanical properties , especially the antibacterial and self-healing properties, of the created physically crosslinked PAA-lysine polyetheramide hydrogels were investigated. The PAA/Lys-BPEA hydrogel realized a comprehensive performance of long-term antibacterial activity without inducing drug resistance, low hemolysis activity and rapid self-healing ability. Therefore, the performance of the combination makes the PAA/Lys-BPEA hydrogel an ideal candidate for the design of smart self-healing devices and antibacterial surface coatings .
研究领域:
生物材料学
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医学
·
高分子化学
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产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2022
·Vol. 30
·期 7
·17994-18013
·
IF 5.19
Liu Wei,Zhang Jingwen,Dai Zhao,Luo Ning,Qu Jing,Sun Peiyun,Li Da,Liao Weilong,Wei Junfu,Zhang Huan
Ozone air pollution poses a serious threat to human health and ecological environment. Manganese oxide (MnOx) is a popular material for ozone decomposition with excellent catalytic performance. However, the catalytic activity may be reduced under high-humidity conditions because of oxygen vacancy of MnOx from the water evaporation. In this paper, a new type of MnOx/poly(acrylic acid- co -divinylbenzene) (PAA) catalyst with MnOx supported on hollow PAA was successfully prepared, which greatly improved the ozone decomposition efficiency under high humidity. It was shown that when the acrylic acid (AA) content was more than 50%, the PAA polymer layer was hydrophilic and the ozone decomposition efficiency would keep high activity for both the low- and high-humidity conditions. The best performance of ozone decomposition was identified for the methanol reduction and AA content of 60%, in which the efficiencies reached 94.5% and 85% at 50% and 90% humidity levels, respectively. It is the synergetic effect of the hydrophilic PAA support and hollow structure that retains and improves the decomposition activity, which can absorb the water vapor molecules and increase the ozone retention time. Therefore, the hollow microsphere catalyst prepared in this paper has great potential in solving the problem of ozone air pollution.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
Advanced Materials Technologies
·
2023
·Vol. 8
·期 9
·2201767
·
IF 6.8
Yan Bai,Yuyuan Lu,Shuaihang Bi,Weikang Wang,Feifei Lin,Fu Zhu,Pin Yang,Ning Ding,Shujuan Liu,Weiwei Zhao,Ning Liu,Qiang Zhao
Wearable human-machine interaction (HMI) is an advanced technology that realizes operations, collaborations, and interactions between human and machines in a co-located or coordinated way. As the core component of wearable HMI electronics, the flexible sensor is desirable to be intelligent, accurate, collaborative, and multifunctional for the feedback control. Here, the multifunctional MXene/polyacrylic acid (PAA) hydrogel is prepared by radical polymerization. As a flexible strain sensor, it exhibits high sensitivity (gauge factor ≈4.94), wide detection range (0–1081%) and stable signal output for 500 cycles. It can also monitor human movement and operate manipulator in real time, exhibiting great potential in wearable artificial intelligence and HMI. Furthermore, the MXene/PAA hydrogel shows photothermal conversion performance with controllable surface temperature regulation ability (RT ≈67 °C) under near-infrared radiation. This work sheds a new light to develop the collaborative and multifunction wearable HMI electronics through integrating the flexible sensor with personal thermal management system.
研究领域:
材料科学
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电子学
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生物医学工程
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人机交互
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产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2021
·
IF 4.098
Xiangchuan Wu,Jinhui Wei,Chengyuan Wu,Guangping lv,Lina Wu
In the present work, we synthesized ZrO 2 /CeO 2 /polyacrylic acid (PAA) nanocomposites (nanozyme) with phosphatase-like activity. ZrO 2 evenly distributed in CeO 2 nanorods considered as lewis acids to enhance the phosphatase-like activity of CeO 2 nanorods. Furthermore, PAA was used to coat ZrO 2 /CeO 2 / nanorods and improve the dispersion, stability and robustness. The ZrO 2 /CeO 2 /PAA nanocomposites had 100% enhanced phosphatase-like activity compared with CeO 2 nanorods and excellent adaptability in a wide pH range from 4.0 to 12.0. ZrO 2 /CeO 2 /PAA nanocomposites could hydrolyze methyl parathion (MP) to p -nitrophenol ( p -NP) with bright yellow color for colorimetric detection. The developed colorimetric detection system showed a linear response from 7.60 × 10 -11 -7.60 × 10 -8 M with a detection limit of 0.021 nM and was successfully applied for the determination of MP in corn samples.
研究领域:
生物化学
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纳米材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
Catalysts
·
2020
·Vol. 11
·期 1
·10
·
IF 3.52
Yang Dang,Yu Cheng,Yukun Zhou,Yifei Huang,Kaige Wang
The treatment of organic dye contaminants in wastewaters has now becoming more imperative. Fenton-like degradation of methylene blue (MB) and methyl orange (MO) in aqueous solution was investigated by using a nanostructure that a layer of CuCl2nanoflake film grown on the top surface of nanoporus anodic alumina substrate (nano-PAA-CuCl2) as catalyst. The new nano-PAA-CuCl2composite was fabricated with self-assembly approach, that is, a network porous structure film composed of CuCl2nanoflake grown on the upper surface of nanoporous anodic alumina substrate, and the physical and chemical properties are characterized systematically with the X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM), and high-resolution transmission electron microscopy (HRTEM), Energy Dispersive Spectrometer (EDS), X-ray photoelectron spectroscopy (XPS). The experimental results showed that the nano-PAA-CuCl2catalyst presented excellent properties for the degradation of two typical organic pollutants such as MB and MO, which were almost completely degraded with 8 × 10−4mol/L nano-PAA-CuCl2catalyst after 46 min and 60 min at reaction conditions of H2O218 mM and 23 mM, respectively. The effects of different reaction parameters such as initial pH, H2O2concentration, catalyst morphology and temperature were attentively studied. And more, the stability and reusability of nano-PAA-CuCl2were examined. Finally, the mechanism of MB and MO degradation by the nano-PAA-CuCl2/H2O2system was proposed, based on the experimental data of the BCA and the temperature-programmed reduction (H2-TPR) and theoretical analysis, the reaction kinetics belonged to the pseudo-first-order equation. This new nanoporous composite material and preparation technology, as well as its application in Fenton-like reaction, provide an effective alternative method with practical application significance for wastewater treatment.Keywords:composite of nanoporous anodic alumina-CuCl2catalyst;Fenton-like reaction;advanced oxidation processes;organic pollutant;degradation mechanism
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2026
·Vol. 27
·期 4
·1778
·
IF 5.6
Thabang Mokoba,Yiyi Lin,Hongyang Chen,Shaojun Yuan
Efficient oil-water separation remains a major challenge in oily wastewater treatment, highlighting the need for advanced materials that combine superwettability, structural durability, and long-term recyclability. Here, we develop a hierarchical ZOMO-PAA@CuC2O4NR@CM membrane via sequential chemical oxidation, oxalic acid etching, and spray-coating of ε-Keggin-type Na-ZnM ZOMO nanoparticles within a polyacrylic acid (PAA) matrix. The resulting architecture couples CuC2O4nanorods with hydrophilic ZOMO-PAA coatings to achieve superhydrophilicity and underwater superoleophobicity. Structural characterization confirmed uniform nanoparticle dispersion, high crystallinity, and robust framework integrity. The membrane exhibits ultrafast water spreading (0°), underwater oil contact angles above 150°, and sliding angles as low as 4°, enabling broad-spectrum oil repellence, antifouling, and self-cleaning. The as-prepared membrane efficiently separates both surfactant-free and surfactant-stabilized emulsions, including aliphatic and aromatic oils stabilized by cationic, anionic, and non-ionic surfactants, with high water fluxes (1695–2675 L·m−2·h−1and ~900 L·m−2·h−1, respectively) and separation efficiencies above 99.1%. The membrane further demonstrates chemical stability under acidic, alkaline, and saline conditions, alongside consistent oil–water separation behavior across multiple cycles. These findings establish ZOMO-PAA@CuC2O4NR@CM as a robust and scalable platform for advanced oily wastewater treatment.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ChemistrySelect
·
2026
·Vol. 11
·期 35
·e74512
·
IF 2.3
Yan Wu,Shiai Xu,Qiuyan Bi,Wanji Zhou,Chao Zhang
Efficient Li + /Mg 2+ separation remains a critical challenge in lithium extraction from salt lake brines. In this study, a Janus-structured composite nanofiltration (NF) membrane was developed through interfacial regulation. A polyethersulfone (PES) substrate with a sponge-finger transitional morphology was first fabricated via non-solvent induced phase separation (NIPS). Then, a polydopamine (PDA) intermediate layer was introduced through dopamine self-polymerization to facilitate the deposition of a hydrophilic poly(acrylic acid) (PAA) interlayer, which exhibited negative surface charge under near-neutral brine conditions (pH ≈ 6.0). Subsequently, a positively charged polyamide (PA) selective layer was constructed in situ via interfacial polymerization (IP) using polyethyleneimine (PEI) and trimesoyl chloride (TMC), resulting in a Janus charge configuration. The influence of PAA molecular weight and PDA charge density on membrane structure and separation performance were systematically evaluated. FTIR, contact angle, and zeta potential analyses confirmed successful construction of the Janus-structured NF membrane with enhanced hydrophilicity and controllable surface charge. The optimized membrane prepared using 2000 Da PAA achieved 98.8% ± 0.33% Mg 2+ rejection and only 39.9% ± 0.77% Li + rejection, corresponding to a Li + /Mg 2+ separation factor of 48 ± 10. This study provides an effective strategy for designing high-selectivity NF membranes for lithium recovery. Graphical This work illustrates the fabrication of PES-PDA/PAA composite nanofiltration (NF) membrane via dopamine modification and PAA coating, followed by interfacial polymerization. The prepared membrane achieves efficient Mg 2+ rejection while permitting Li + permeation for Li + /Mg 2+ separation.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Dongxu Yin,Guiru Sun,Daming Yang,Baoxin Ni,Ying Li,Wei Lu,Maobin Wei,Ming Feng
Lithium metal is regarded as the most promising anode material for high energy density secondary batteries because of its high theoretical specific capacity and low redox potential. Nevertheless, its practical application is severely hindered by poor interfacial stability and uncontrollable dendrite growth. An inorganic/organic composite SEI by coating applied to the surface of Li metal (named FeF 3 -PAA@Li) is created through a chemical in-situ treatment method for the Li metal with a solution including PAA and FeF 3 , which is made of a flexible LiPAA organic matrix in which rigid LiF, FeF 2 , and Li Fe alloy inorganic nanoparticles are embedded. The soft LiPAA matrix acts as a chemically inert and stretchable skin, effectively accommodating volume changes and avoiding additional parasitic reactions. Meanwhile, the inorganic nanoparticles provide enhanced structural robustness to impede proliferation of Li dendrites and enable uniform Li + distribution for even Li electroplating. Thus, both Li O 2 cells and Li||Li symmetric cells incorporating FeF 3 -PAA@Li show a low overpotential and consistent cycling stability. This SEI design offers a viable pathway for enabling stable and high-efficiency Li O 2 batteries in practical settings.
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DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2021
·
IF 6.165
Yushi Guo,Ling Wu,Chenglin Jiang,Jinling Zhao,Lutian Feng,Kaiyue Zhang,Ye Qin,Xiangrong Li,Jianguo Liu,Chuanwei Yan,Jiazhen Yang,Na Wang,Duo Qi,Junyao Li,Ming Lei
A number of additives have been proven to improve the performance of vanadium redox flow batteries (VRFBs). Polyacrylic acid (PAA) is considered to be one of the promising candidates because of its beneficial effects on the stability of batteries . This paper studied the influence of PAA on viscosity, which is one of the electrolyte transport properties. The viscosity of VOSO 4 + PAA + H 2 O ternary solution was measured at different temperature, ionic strength , and ionic strength fractions in the temperature range of 283.15 K–318.15 K. Several thermodynamic parameters of the PAA aqueous solution were calculated, such as the viscosity B -coefficients, the apparent molar volume of infinite dilution and the free energy of activation . In addition, two different semi-empirical prediction equations were established for ternary solution viscosity on the basis of the Eyring's theory , and the better one was determined through comparison. The average relative deviation is 0.74% between the predicted and the experimental values, which indicates this function can be used to predict the viscosity of VOSO 4 + PAA + H 2 O ternary solution.
研究领域:
电化学
·
物理化学
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Si Li,Chaomeng dai,Luochao Wan,Jixiang Li,Yanping Duan,Xueji You,Shaolin Yang,Jiajun Hu,Jifeng Guo,Yalei Zhang,Lang Zhou,Mintian Gao
Advanced oxidation processes (AOPs) are pivotal in the degradation of recalcitrant and toxic organic pollutants in water and wastewater. While extensive research has optimized AOP performance through various experimental parameters, the impact of groundwater matrices on electron transfer processes (ETP) remains inadequately addressed. The mechanism of the electron transfer process is the oxidation of organic complexes and the reduction of peroxyacetic acid catalyst complexes resulting from the co-adsorption of organic compounds and peroxyacetic acid by the catalyst. Therefore, the oxidation potential of sulfamethoxazole (SMX) and the reduction potential of the AC600/PAA* complex are affected by the groundwater matrix, which in turn affects the kinetic process of the ETP system. This study investigates the role of groundwater matrices in the AC600/PAA/SMX system, revealing how these matrices influence ETP efficiency. We demonstrate that weakly acidic and neutral conditions enhance ETP, while chloride ions (Cl-) facilitate electron transfer and bicarbonate ions (HCO 3 –) inhibit it. Notably, the presence of humic acid at concentrations below 10 mg/L po 3 itively correlates with increased electron transfer rates, indicating robust adaptability to natural organic matter. Contrary to traditional views, our findings highlight that ETP efficiency is significantly improved in real groundwater matrices, suggesting a substantial advantage over conventional radical-based degradation pathways. This research provides critical insights into optimizing AOP performance in environmental contexts, laying the groundwork for future advancements in electron transfer technology for organic pollutant degradation.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
IEEE SENSORS JOURNAL
·
2025
·
IF 4.5
Hao Liu,Lingling Li,Hao Ke,Hua Tu,Yuheng Zuo,Yi Zhou,Jiangnan Zhang,Zhao Li,Ai Zhou
A long-period fiber grating (LPFG) sensor functionalized with titanium dioxide-chitosan/poly(acrylic acid) (TiO2-CS/PAA) composite film was proposed for detecting lead ion (Pb2+) concentration. The sensor was fabricated by sequentially coating TiO2-CS/PAA composite functionalized film on the LPFG surface via the Layer-by-Layer self-assembly (LbL) method. The CS/PAA layer acts as a general sensing film, with the abundant amino (-NH2) and hydroxyl (-OH) groups on chitosan providing sufficient chelation sites for Pb2+. Incorporation of PAA significantly improves both adsorption efficiency and mechanical stability. The sensitivity of the sensor is further enhanced by inserting a TiO2 layer with a high refractive index (RI), which can reduce the RI difference between the fiber and the external environment. Experimental results demonstrated that the resonance wavelength of LPFG exhibited a blue shift with the increase of Pb2+ concentration, achieving a maximum sensitivity of 36.5 nm/μM, a limit of detection (LOD) of 9.3 nM (0.00193 mg/L), and a rapid response time of approximately 10 minutes, along with high selectivity toward Pb2+. The proposed sensor features simple fabrication, excellent selectivity, and robust stability, indicating significant potential for Pb2+ monitoring applications.
研究领域:
生物传感
·
环境监测
·
分析化学
·
纳米材料
·
光学检测
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）