POLYMER SCIENCE SERIES A
·
2023
·Vol. 65
·期 4
·358-368
·
IF 1
Tiantian Ren,Xu Yuanyuan,Wu Jianning,Meng Guihua,Yang Shengchao,Cui Lin,Liu Zhiyong,Guo Xuhong
Abstract Collecting water from the air could alleviate freshwater shortages in arid regions such as remote and inland areas. However, it is challenging to prepare adsorption materials that have high adsorption and desorption performance using straightforward synthesis routes for water harvesting applications. In this paper, a polydopamine (PDA)@Sodium polyacrylamide carboxymethyl cellulose (PAM-CMCNa)-calcium chloride (CaCl 2 ) composite aerogel (PDCA) with a vertical channel was prepared by salt template method and photopolymerization for atmospheric water collection (AWH). The designed vertical channel promotes the rapid transport of water molecules from the atmosphere to the interior of the hydrogel through capillary action. During this process, the hydrogel further expands to prevent the leakage of the internal salt solution, which effectively improves the water vapor adsorption and desorption by hydrogel. Experimental results showed that the hydrogel can absorb 2.78 g/g of water at 90% relative humidity (RH), where 56.3% of the captured water can be desorbed within 60 min of exposure under 1.0 sun light intensity. After 10 adsorption-desorption cycles, the PDCA still possesses excellent water sorption performance. The indoor water collection test showed that the water collection performance reached 2.143 kg/kg day at 90% RH and 25°C adsorption for 12 h and desorption for 6 h. The proposed method for the preparation of PDCA composites can achieve high water harvesting performance over a wide humidity range to enable solar-driven clean water production in remote areas.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Fajuan Tian,Jiawen Yu,Wen Wang,Dianbo Zhao,Jie Cao,Qi Zhao,Fucheng Wang,Hanjun Yang,Zhixin Wu,Jingkun Xu,Baoyang Lu
Conducting polymers are emerging as promising neural interfaces towards diverse applications such as deep brain stimulation due to their superior biocompatibility, electrical, and mechanical properties. However, existing conducting polymer-based neural interfaces still suffer from several challenges and limitations such as complex preparation procedures, weak interfacial adhesion, poor long-term fidelity and stability, and expensive microfabrication, significantly hindering their broad practical applications and marketization. Herein, we develop an adhesive and long-term stable conducting polymer neural interface by a simple two-step electropolymerization methodology, namely, the pre-polymerization of polydopamine (PDA) as an adhesive thin layer followed by electropolymerization of hydroxymethylated 3,4-ethylenedioxythiophene (EDOT-MeOH) with polystyrene sulfonate (PSS) to form stable interpenetrating PEDOT-MeOH:PSS/PDA networks. As-prepared PEDOT-MeOH:PSS/PDA interface exhibits remarkably improved interfacial adhesion against metallic electrodes, showing 93% area retention against vigorous sonication for 20 min, which is one of the best tenacious conducting polymer interfaces so far. Enabled by the simple methodology, we can facilely fabricate the PEDOT-MeOH:PSS/PDA interface onto ultrasmall Pt-Ir wire microelectrodes (diameter: 10 μm). The modified microelectrodes display two orders of magnitude lower impedance than commercial products, and also superior long-term stability to previous reports with high charge injection capacity retention up to 99.5% upon 10,000,000 biphasic input pulse cycles. With these findings, such a simple methodology, together with the fabricated high-performance and stable neural interface, can potentially provide a powerful tool for both advanced neuroscience researches and cutting-edge clinical applications like brain-controlled intelligence.
✓ 已验证
DOI
高影响因子
ENERGY & FUELS
·
2022
·
IF 4.654
JiangTao Cai,Yunyun Ding,Youyu Zhu,Liuhua Hou,Shiyong Zhao,Yating Zhang
It is necessary to design an anode material for lithium-ion batteries (LIBs) with good lithium storage capacity. In the present work, the CNTs@PDA/CoMoS4 composite materials were prepared through self-polymerization of dopamine (PDA) and coating on carbon nanotubes and then deposition of CoMoS4 by a hydrothermal method. Benefited from the formation of the coordination bond between the hydroxyl groups of PDA and the metal ions of CoMoS4, the combination between the CNTs@PDA matrix and CoMoS4 nanoparticles is effectively enhanced. As a result, CoMoS4 nanoparticles grow uniformly on the surface of CNTs@PDA, which reduces the diffusion length of Li+ and improves the electronic transmission efficiency. The CNTs@PDA/CoMoS4 as an anode material exhibits outstanding electrochemical properties in terms of a high capacity of 1025.2 mA h·g–1 after 100 cycles at 0.1 A·g–1. Meanwhile, its capacity is 490.3 mA h·g–1 after 200 cycles at 1 A·g–1. The desirable electrochemical properties combined with the stable structure and the facile synthesis route make CNTs@PDA/CoMoS4 composites a potential candidate for high-performance LIBs.
研究领域:
材料科学
·
储能
·
电化学
·
纳米材料
✓ 已验证
DOI
高影响因子
Scientific Reports
·
2026
·
IF 3.9
Li Tianxi,Zhang Chen,Su Diya,Wang Jieqing
Polydimethylsiloxane (PDMS) is widely used across various fields due to its biocompatibility and chemical inertness. However, its surface hydrophobicity limits its application in cell culture. This study modifies PDMS surfaces with polydopamine (PDA) to mitigate hydrophobicity, with a primary focus on evaluating fibroblast biocompatibility on the modified substrate at a selected concentration (0.2%) and exploring its potential for wound healing applications. PDMS was surface-modified with PDA solutions at concentrations of 0.05%, 0.1%, 0.2%, 0.3%, 0.4%, and 0.5% (W/V%) to evaluate its wettability. Based on the preliminary screening of material contact angle and cell viability after material-cell interaction, 0.2% PDA-PDMS was chosen for all subsequent biological tests. Mouse fibroblasts L929 were cultured on the selected substrate. Cell proliferation was determined by the CCK-8 assay. FITC/DAPI fluorescent staining, scratch assay, and RT-qPCR were used to evaluate cell spreading, migration, and gene expression. Statistical analysis employed t-test, one-way ANOVA, and two-way ANOVA. All PDA concentrations significantly reduced material contact angles (P < 0.01). At 48 h of interaction, the 0.2% PDA-PDMS exhibited the highest cell viability in CCK-8 assay among all concentrations (P < 0.0001), with significantly increased cell viability observed at 48 and 72 h (P < 0.05). The cell scratch assay showed that L929 cultured on 0.2% PDA-PDMS had largely recovered by 36 h post-scratch, with no significant difference compared to cells cultured on PDA-PDMS from 0 h to 18 h (P > 0.05). RT-qPCR indicated significantly elevated expression of transforming growth factor-β1 ( TGF-β1 ) and collagen α-1 (III) chain ( COL3A1 ) at 24 h and 36 h, and α-smooth muscle actin ( α-SMA ) at 48 h, compared to control (P < 0.05). PDA significantly decreased the hydrophobicity of the PDMS and enhanced its wettability. Based on preliminary assessment across concentrations, 0.2% PDA-PDMS demonstrated the highest cell proliferation and viability among the tested groups. PDA surface modification at this concentration also enhanced cell migration ability, improved cell morphology and spreading, and increased the expression of related genes.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2026
·
IF 5.8
Leilei Dong,Yuping Wang,Yitong Hao,Jinghui Zhang,Xin Fang,Xueping Ji,Beibei Wang
A three-dimensional (3D) porous PDA–PPY hydrogel with abundant anchoring sites, which facilitates Au NPs loading and accelerates electron transfer. • The Au NPs further improve conductivity, achieve dual signal amplification of the sensor. • The TC aptamer form a stable recognition interface with high affinity and specificity toward TC. • The proposed aptasensor exhibited an extra low detection limit of 2.7 pM toward TC. • the proposed aptasensor provides a robust and effective strategy for monitoring TC residues in real samples. Herein, a sensitive and reliable electrochemical aptasensor (BSA/Apt/PDA-PPY@Au NPs/GCE) was developed for the determination of tetracycline (TC). The sensing platform was built upon a green-synthesized PDA–PPY polymer hydrogel, which provides a three-dimensional porous architecture with abundant anchoring sites and favorable conductivity, enabling efficient loading of Au nanoparticles (Au NPs) and rapid interfacial electron transfer. The TC aptamer was then robustly immobilized onto the PDA–PPY@ Au NPs nanocomposite via directional Au–S bonding, forming a stable recognition interface with high affinity and specificity toward TC. Benefiting from the dual effects of the conductive PDA–PPY hydrogel and Au NPs, the proposed aptasensor exhibited high sensitivity with an extra low detection limit of 2.7 pM and a wide linear response range of 5 pM–1 μM. Moreover, it demonstrated excellent reproducibility, selectivity and good stability. Importantly, accurate determination of TC in real samples (milk and river water) was achieved with satisfactory recoveries and accuracy, highlighting the potential of this strategy for monitoring TC residues in food matrices and environmental waters. Download: Download high-res image (273KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Xiaolei Zhang,Dongjun Lv,Zhongmin Liu,Fan Yang,Qi Tang,Nan Gao,Zong Tan,Peng Du,Jinyang Li,Jiahao Wang
Microplastics and dye pollutants threaten aquatic ecosystems and human health, prompting the need for sustainable solutions. Converting industrial solid waste into value-added adsorbents provides an effective remediation pathway. In this work, industrial solid waste—fly ash cenospheres—was transformed into a value-added adsorbent (PMFL) by coating with polydopamine (PDA) and Fe 3 O 4 , imparting magnetic recoverability and high adsorption capacity for polystyrene (PS) microplastics (312.00 mg/g). To further improve practical applicability and broaden pollutant removal capacity, PMFL was immobilized within a chitosan matrix to form a monolithic CS@PMFL composite. This structure not only enables facile recovery but also exhibits strong adsorption affinity toward both PS microplastics and Congo red dye. Mechanistic investigations indicated that adsorption involved a combination of electrostatic, chemical, and physical interactions, including π–π stacking, hydrogen bonding, hydrophobic effects, surface complexation and physical entrapment. The materials maintained high adsorption performance across a wide range of pH and ionic conditions, demonstrating robust environmental adaptability. Overall, this study presents a scalable approach for converting industrial waste into multifunctional adsorbents capable of simultaneously removing diverse pollutants.
研究领域:
环境科学
·
材料工程
·
污染修复
·
纳米复合材料
·
可持续化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2022
·Vol. 33
·期 6
·1898-1905
·
IF 3.348
Datong Wu,Xue Cheng,Tianze Zhang,Hong Gao
With the development of technology, life is full of electromagnetic pollution; therefore we need to shield the electromagnetic signals that are undesirable and harmful to us. In this work, polypyrrole (PPy)/polydopamine (PDA)/Ti 3 C 2 T x composites were successfully prepared for electromagnetic interference shielding applications by a simple polymerization method and mixing process. We investigated the electrical conductivity, thermal properties, electromagnetic interference shielding effect (EMI SE), and its EMI attenuation mechanism of PPy/PDA/Ti 3 C 2 T x composites. By adjusting the content of Ti 3 C 2 T x in the PPy/PDA/Ti 3 C 2 T x composites (from 0 to 12 vol%), the conductivity of the composites increased considerably from 34.6 to 884.1 S m −1 , and the maximum EMI SE of the composites in K u -band varied accordingly from 4.30 to 21.82 dB. Additionally, the thermal stability of the PPy/PDA/Ti 3 C 2 T x (12 vol%) composite was improved due to the addition of Ti 3 C 2 T x and PDA, with a change in mass loss from 59.25% to 29.34% at 900°C. These results highlight that the investigated PPy/PDA/Ti 3 C 2 T x composites are promising materials for EMI shielding.
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Shuying Shi,Chonghe Xu,Qing Dong,Yuping Wang,Silun Zhu,Xiaoqian Zhang,Yuk Tak Chow,Xinqiang Wang,Luyi Zhu,Guanghui Zhang,Dong Xu
The functionalized MnO 2 /PDA/Fe 3 O 4 fibers were synthesized to removal Pb(II) from wastewater. MnO 2 nanosheets were in-situ loaded on the high saturation magnetization Fe 3 O 4 fibers matrix through a polydopamine (PDA) intermediate platform. The high Fe 3 O 4 content enabled the composite fibers to achieve rapid magnetic separation. The perpendicularly orientated MnO 2 nanosheets coated on the fibers could avoid agglomeration and give full play to their outstanding adsorption performance. The maximum Pb(II) adsorption capacity at 300 K, 308 K and 318 K calculated by Langmuir model could reach 196.67, 200.45 and 205.07 mg/g, respectively; all of which were higher than those of most reported MnO 2 based adsorbents. Thermodynamics showed that the fibers had spontaneously physicochemical adsorption of Pb(II). The composite fibers adsorbents had excellent Pb(II) selective adsorption and reusability. In addition, under the laboratory simulation test conditions, the fibers exhibited an excellent Pb(II) treated capacity of ~2500 and 6500 kg wastewater per kg adsorbents. This could dramatically purify wastewater from 10 mg/L to below 0.01 mg/L and 0.1 mg/L. The prepared MnO 2 /PDA/Fe 3 O 4 fibers had excellent adsorption capacity and actual treated capability for Pb(II), which could bring about rapid magnetic separation and offer great application potential in Pb(II) adsorption removal.
研究领域:
环境科学
·
材料科学
·
水处理技术
·
吸附材料
·
纳米复合材料
✓ 已验证
DOI
高影响因子
DESALINATION
·
2026
·
IF 9.9
Yingyang Bu,Ran Han,Tianxu Feng,Wenxuan Wang,Guangze Nie
Efficient decontamination of toxic mercury from water remains a critical challenge. MoS 2 nanoadsorbents exhibit significant advantages for mercury capture due to the strong soft-soft interactions between Hg(II) and sulfur. However, conventional MoS 2 nanosheets or MoS 2 -based nanocomposites are often hindered by practical limitations, including difficulty in separation and recovery, pore blockage, nanoparticle leaching, and high pressure drop in flow-through systems. Herein, we report a millimeter-sized nanocomposite (MoS 2 @PDA@CER) fabricated by coating MoS 2 nanosheets onto a cation exchange resin via a polydopamine (PDA) adhesive layer. The millimeter-scale architecture enables easy separation and superior hydraulics for flow-through operation. MoS 2 @PDA@CER exhibits broad pH applicability (1–8), ultra-high adsorption capacity (1168.18 mg/g at pH 5), rapid adsorption kinetics (equilibrium within 1 h), and exceptional selectivity toward Hg(II). These outstanding properties are attributed to the synergy between the unique millimeter-sized structure of the resin support and the strong affinity of MoS 2 for Hg(II). Furthermore, the nanocomposite demonstrates deep purification capability, effectively treating various trace mercury-contaminated waters to meet drinking water standards. It also shows excellent reusability, with no significant loss in adsorption capacity after 10 cycles. In fixed-bed column tests, MoS 2 @PDA@CER successfully treated ∼3000 BV of Hg(II)-spiked wastewater, with effluent complying with the Chinese integrated wastewater discharge standard (50 μg/L); notably, the first 900 BV even met the drinking water standard (1 μg/L). All the results indicate that MoS 2 @PDA@CER is a scalable and efficient adsorbent for the remediation of mercury-contaminated wastewater.
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2023
·
IF 7.2
Fang He,Hubo Yuan,Huayan You,Zhenxing Wang,Shaoqin Peng,Yuexiang Li
Building carbon nitride (CN)-based core shell heterostructures is an effective strategy to enhance the photocatalytic performance and stability by optimize the interface area and protect the CN core, respectively. Moreover, by fabricating the porous structures in core shells can further optimize the light absorption, charge separation, and mass transfer. Herein, we have constructed porous C-PDA–CN–ms core-shell heterostructures through a facile green molten salt (ms) sculpture the polydopamine (PDA) derived carbon (C-PDA) shells with CN core. In which, the C-PDA-CN core-shells arise from in situ polymerization of dopamine (DA) on the surface of melamine to form PDA@melamine coatings followed by thermal polycondensation . The molten salts at high-temperature act as a green fluid immersing in and out of C-PDA-CN core-shells to further produce porous structures. The 1 wt% C-PDA–CN–ms with porous core-shell structures display photocatalytic H 2 evolution rate of 3830 μmol h −1 g −1 , which is 20.8 times enhancement of 1 wt% C-PDA-CN core-shells, even 73.6 times higher than that of pristine CN. It reveals that the porous and core-shell heterostructures endow C-PDA–CN–ms enhanced light absorption, various charge transport channels for improved charge carrier separation and transfer, contributing to the superior photocatalytic H 2 evolution performance. Our work opens a new window for the green construction of porous core-shell heterostructures of CN-based photocatalysts .
✓ 已验证
产品关联
DOI
高影响因子
Journal of Cleaner Production
·
2023
·
IF 11.1
Jiayi Li,Weixing Han,Heyao Liu,Minhua Su,Diyun Chen,Gang Song
The development and use of clean energy produced by nuclear power plants is becoming a major international trend, but it will inevitably lead to the problem of radionuclide pollution. Radioactive nuclear wastewater containing Cs and U and produced as a byproduct of coastal nuclear power production can cause substantial environmental pollution . In order to simultaneously remove radioactive cesium and uranium, polydopamine (PDA) inlaid ammonium phosphomolybdate (AMP) has established a hydrophilic functional structural film on the surface of Fe 3 O 4 , forming AMP@PDA@Fe 3 O 4 (APF) which is used to simultaneous remove Cs(I) and U(VI). Using the pH sensitive range of APF adsorption in the process of adsorbing Cs(I) and U(VI), synergistic adsorption can be achieved under the condition of weak acidity to neutral. The effects of temperature, and common cations on Cs(I) and U(VI) adsorption by APF were investigated, the adsorption was found to be sensitive to the presence of K + . The efficiency of Cs(I) and U(VI) adsorption by APF was 99.88% and 98.39%, respectively. The Cs(I) adsorption process was primarily ion exchange with NH 4 + within APF composite, whereas that for U(VI) was primarily C-O complexation. Both the Cs(I) and U(VI) adsorption reactions were consistent with second-order kinetic and Langmuir isothermal adsorption models. After five cycles of experiments the removal efficiency of Cs(I) and U(VI) can reach 64.88% and 79.81%, respectively. APF was also found to have high selectivity for Cs and U in seawater with high salt content at pH 6.0–7.0. In mimic contaminated seawater, the efficiency of Cs(I) and U(VI) removal was 97.65% and 84.63%, respectively. These findings provide references for the remove of Cs(I) and U(VI) from radioactive wastewater , making the process of energy production safer.
✓ 已验证
产品关联
DOI
高影响因子
Membranes
·
2022
·Vol. 13
·期 1
·14
·
IF 4.562
Jingjun Peng,Bhaskar Jyoti Deka,Shaodi Wu,Zhongyuan Luo,Jehad A. Kharraz,Wei Jia
Water pollution caused by oil spills or sewage discharges has become a serious ecological environmental issue. Despite the membrane separation technique having a promising application in wastewater purification, the membrane fabrication method and separation robustness have remained unsatisfactory until now. Herein, we developed a novel strategy, spacer-assisted sequential phase conversion, to create a patterned polyvinylidene fluoride@polypropylene (P-PVDF@PP) substrate membrane with a multiscale roughened surface. Based on that surface structure, the underwater oil resistance behavior of the P-PVDF@PP membrane was improved. Moreover, owing to the abundant active sites on the P-PVDF@PP surface, the polydopamine/P-PVDF@PP (PDA/P-PVDF@PP) Janus membrane could be readily fabricated via wet chemical modification, which exhibited excellent switchable oil–water separation performance. Regarding surfactant-stabilized oil-water emulsion, the as-prepared PDA/P-PVDF@PP Janus membrane also had robust separation efficiency (as high as 99% in the n-hexane/water, chloroform/water, and toluene/water emulsion separation cases) and desirable reusability. Finally, the underlying mechanism of emulsion separation in the PDA/P-PVDF@PP Janus membrane was specified. The as-designed PDA/P-PVDF@PP Janus membrane with high-efficiency oil–water separation shows potential application in oily wastewater treatment, and the developed fabrication method has implications for the fabrication of advanced separation membranes.Keywords:emulsion separation;Janus membrane;patterned interface;switchable wettability
✓ 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）