NPG Asia Materials
·
2022
·Vol. 14
·期 1
·1-10
·
IF 10.761
Wen Guo-Yu,Zhou Xing-Long,Tian Xiao-Yu,Xie Rui,Ju Xiao-Jie,Liu Zhuang,Faraj Yousef,Wang Wei,Chu Liang-Yin
Pigmentary coloration can produce viewing angle-independent uniform colors via light absorption by chromophores. However, due to the limited diversity in the changes of the molecular configuration of chromophores to undergo color change, the existing materials cannot produce a wide range of visible colors with tunable color saturation and transmittance. Herein, we propose a novel strategy to create materials with a wide visible color range and highly tunable color saturation and transmittance. We fabricated a hydrogel with poly (acrylamide- co -dopamine acrylamide) networks swollen with Fe 3+ -containing glycerol/water in which the covalently crosslinked polyacrylamide backbone with pendant catechols can ensure that the hydrogel maintains a very stable shape. Hydrogels containing adjustable catechol-Fe 3+ coordination bonds with flexible light-interacting configuration changes can display a wide range of visible colors based on the complementary color principle. The catechol-Fe 3+ complexes can dynamically switch between noncoordinated and mono-, bis- and tris-coordinated states to harvest light energy from a specific wavelength across the whole visible spectrum. Therefore, these hydrogels can be yellow, green, blue, and red, covering the three primary colors. Moreover, color saturation and transmittance can be flexibly manipulated by simply adjusting the Fe 3+ content in the hydrogel networks. The versatility of these smart hydrogels has been demonstrated through diverse applications, including optical filters for color regulation and colorimetric sensors for detecting UV light and chemical vapors. This proposed smart hydrogel provides a universal color-switchable platform for the development of multifunctional optical systems such as optical filters, sensors, and detectors.
研究领域:
材料科学
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生物医学工程
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Jian Sun,Haobo Ma,Jiafei Ren,Xia Han,Juan Liu
The practical application of photo-Fenton processes to degrade contaminants is limited by their poor stability under varying pH environment. The requirement of supplementary oxidants and iron additives increase the cost. This reports the construction of Z-scheme heterojunction with Fe coordinatively unsaturated metal sites (Fe CUMSs) based on g-C 3 N 4 as the highly efficient photo-Fenton catalysts. The optimized catalyst presented stable MB degradation efficiency of 115.32 mg g −1 (pH 4.0), 113.44 mg g −1 (pH 7.0), and 106.35 mg g −1 (pH 9.0) in 30 mins without any oxidants and iron-containing additives. The self-feeding photo-Fenton mechanism was studied in details, suggesting that Fe CUMSs improved the H 2 O 2 generation rate of g-C 3 N 4 to 6.23 μmol L −1 h −1 . A completely reversible Fe 2+ /Fe 3+ conversion process lead to persistent generation of hydroxyl radical to degrade MB without iron precipitation generation. This work presents a new strategy constructing self-feeding photo-Fenton catalytical system to remove contaminants for environmental remediation and sustainability.
研究领域:
环境科学
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材料科学
·
催化化学
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产品关联
DOI
高影响因子
CARBON
·
2025
·
IF 11.6
Heng Zhang,Biao Hu,Yangmin Wu,Minglong Yan,Qinhao Zhang,Wenwu Xu,Wenjie Zhao
Metal corrosion and mechanical wear result in a serious decrease in the service life of marine engineering equipment. Carbon-based quantum dots (CDs) are often used as corrosion inhibitors or lubricants due to their ease of functionalization and quantum size effect. However, the protection efficiency of CDs is limited by weak adsorption capacity, and additional doping of heteroatoms such as N and S is usually needed to enhance the adsorption. Here, Ti 3 C 2 T x quantum dots (MQDs) were synthesized by using two-dimensional Ti 3 C 2 T x sheets containing abundant functional groups on the surface as precursors. The corrosion inhibition efficiency of MQDs with a concentration of 400 mg L −1 reached 94.2 %, and the coefficient of friction and wear rate were reduced by 67.6 % and 83.2 %, respectively, compared with the single NaCl solution. Surface analysis showed that MQDs blocked the penetration of corrosive species via forming a protective film on the steel surface through the formation of Ti–O–Fe coordination bonds. Notably, the thickness of protective film was affected by the pH of solution, reaching a maximum thickness of 215 nm at the NaCl solution with a pH of 7. Finally, density functional theory and molecular dynamics simulations were utilized to deeply reveal the adsorption mechanism of MQDs. This study provides new insights into the role of MQDs as dual-functional additives, which is of great significance in promoting the development of multifunctional marine engineering protective materials.
研究领域:
材料科学
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腐蚀工程
·
纳米技术
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表面化学
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机械工程
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Jingjing Tang,Hongchao Li,Xuan Zhang,Jieshu Qian,Bingcai Pan
Fe-based metal–organic frameworks (MOFs) have garnered significant attention as catalysts for heterogeneous Fenton reactions, while the limited efficiency of the Fe(III)/Fe(II) redox cycle hinders their widespread use in wastewater treatment. Herein, we successfully incorporated carbon nanotubes (CNTs) into MIL-101(Fe) to modulate the coordination environment of Fe for achieving better catalytic activity. The MIL-101(Fe)/CNTs/H 2 O 2 system shows outstanding performance in degrading various pollutants, with the catalytic activity of the MIL-101(Fe)/CNTs composites (98.8%) significantly surpassing that of MIL-101(Fe) alone (26.4%) or CNTs alone (3.5%). Multiple experimental findings suggest that this synergistic effect is primarily attributed to the C-O-Fe bridge bonds resulting from the interaction of surface carboxyl groups on CNTs with Fe in MIL-101(Fe). This unique coordination structure accelerates the redox cycle of Fe(III)/Fe(II), thereby promoting the generation of hydroxyl radicals (HO • ). Furthermore, the MIL-101(Fe)/CNTs composites demonstrate excellent reusability and stability, maintaining effectiveness over a wide pH range from 3.0 to 6.5. This study provides new insights into regulating the microstructure of Fe-based MOFs to enhance their Fenton catalytic activity.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
WATER RESEARCH
·
2021
·
IF 11.236
Jiuyang Lin,Qin Chen,Riri Liu,Wenyuan Ye,Patricia Luis,Bart Van der Bruggen,Shuaifei Zhao
Sustainable treatment of the highly saline landfill leachate concentrate for application as green fertilizer calls for effective fractionation of the existing humic substances and inorganic salts; advanced selective nanofiltration membranes are proposed for this. One-step, rapid assembly of a tannic acid-Fe 3+ coordination complex is a promising strategy to endow the membranes with an enhanced nanofiltration performance. In this study, a robust and homogeneous tannic acid-Fe 3+ coordination complex layer was effectively coated onto the surface of a loose nanofiltration substrate in an extremely short time (15 s). After the coating of the tannic acid-Fe 3+ coordination complex layer, the nanofiltration membrane showed a significantly reduced molecule weight cutoff (i.e., reduction from 601 to 279 Da) and thus enhanced selectivity towards humic substances. Specifically, the rejection to humic substances of the coated nanofiltration membrane increased from 95.31±0.54% to 99.32±0.18% with negligible rise in salt rejection, demonstrating an enhanced fractionation efficacy for humic substances and salts. Assisted by a diafiltration operation with the coated nanofiltration membrane, humic substances in the landfill leachate concentrate were effectively purified and extracted with 96.60% recovery. Particularly, the humic substances were linearly enriched by ca. 7.8 folds (i.e., from 1837 to 13970 mg·L −1 ) with a purity of 98.91% for potential application as liquid fertilizer. The one-step rapid tannic acid-Fe 3+ coordination complex coating exhibits an impressive efficacy to engineer advanced nanofiltration membranes that could be applied at a large scale for sustainable resource extraction from landfill leachate concentrate.
研究领域:
环境科学
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材料科学
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水资源管理
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xiao Yu,Jia-Wei Zhu,Lin Gu,Qing-Yun Wu
The reversed heat transfer direction in photothermal membrane distillation overturns the design principles of conventional membrane distillation, necessitating a fundamental re-examination of how membrane microstructure dictates performance. Urushiol has intrinsic hydrophobicity and robust adhesion. Its catechol groups enable both self-assembly into micron-scale particle layers and subsequent conversion to sub-micron/nano features upon metal coordination, thus offering a chemically simple yet topographically versatile route to tailor hierarchical roughness for photothermal membrane distillation. Based on this, we developed a series of hydrophobic photothermal membranes with precisely tailored micro-nano structures via a single-variable strategy based on an urushiol-Fe 3+ coordination network. The inherent micron-scale pores of the substrate and the nano-scale topography governed by the terminal modification component synergistically facilitated the evolution of interfacial wetting states from the Cassie-Baxter to the hybrid wetting state. We identified a critical design trade-off: Structures with high micro-nano complexity exhibited enhanced photon capture, achieving solar absorption rates above 94.2 % in the 300–800 nm spectral range, whereas those with low micron-scale hierarchy demonstrated optimized thermal conduction performance. The synergistic integration of these two effects enabled a maximum distillation flux of 2.703 ± 0.022 kg·m −2 ·h −1 and a photothermal conversion efficiency of 91.22 ± 0.73 % under 2 sun illumination. This work establishes a generalizable structure-wetting-performance relationship model, providing a foundational design principle for engineering photothermal membranes with tailored functionalities.
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产品关联
DOI
高影响因子
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
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2025
·
IF 2
Chunying Xu,Chengbao Liu,Peimin Hou,Li Cheng
Coating microdamage and interfacial corrosion are inevitable for the metal/coating system during service, leading to the premature failure of the equipment and posing significant safety hazards. However, challenges remain regarding the achievement of early detection of corrosion and the visual monitoring of damage. Herein, a novel polymeric coating system exhibiting robust capabilities for corrosion sensing and visualization has been developed through the combination of meticulously designed nanosensors. These nanosensors were synthesized utilizing a zeolitic imidazolate framework that is infused with phenanthroline (Phen) corrosion probes. The onset of metal corrosion at the interface of coating damage can be promptly sensed and reflected by an apparent orange-red color, attributing to the formation of Phen-Fe 2+ coordinates. The impermeability and corrosion resistance of the epoxy coating have been greatly improved through introducing the synthesized nanosensors. This straightforward yet powerful strategy based on elaborate nanosensors, offering a new perspective for design of multifunctional and long-life protective materials.
研究领域:
材料科学
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纳米技术
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表面工程
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腐蚀科学
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智能涂层
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2018
·Vol. 6
·期 10
·4424-4431
·
IF 9.931
Liming Qin,Ning Chen,Xin Zhou,Qinmin Pan
Self-healing is an effective strategy to improve the durability of a superhydrophobic surface, but a challenge remains in repairing its multi-scale structures and wettability simultaneously after damage. Here we report a self-healable superhydrophobic aerogel that spontaneously restores its superhydrophobicity, microstructure and macroscopic configuration simultaneously after physical or chemical damage. The superhydrophobic aerogel is fabricated by decorating an alginate-based aerogel with silver nanoparticles and octadecylamine (ODA). Once the aerogel is scratched or cut, it repairs both hierarchical structures and configuration integrity autonomously via wetting/heating processes, resulting in the recovery of superhydrophobicity and mechanical properties. Even after being etched with O2 plasma, it regains its superhydrophobic properties through a simple heat treatment. The robust healability is attributed to the dynamic catechol–Fe coordination as well as thermally induced rearrangement of ODA molecules. This concept of robust healability offers a new insight into the design of robust superhydrophobic surfaces aiming at various technological applications.
研究领域:
材料科学
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表面化学
·
纳米技术
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xiao Zhang,Menglin Zhang,Xinyuan Li,Baoping Xin,Jie Hao,Jinying Li,Hansheng Li,Dongxiang Zhang,Zijie Wu,Xiyan Xu,Jiatao Zhang
The risk of radionuclide leakage always threats ecological security and human health, making the recovery of uranium from nuclear wastewater a meaningful and urgent issue. However, the low-cost and efficient capture of uranium remains a challenge at present. In this study, a homemade photocatalyst of iron coordinated graphitic carbon nitride (g-C 3 N 4 ) co-doped with phosphorus and oxygen (OPFCN), which was facilely synthesized through a novel one-step thermal polymerization method, exhibited superior photoelectric efficiency and photocatalytic activity towards the photo-reductive capture of uranium(VI). The simultaneous Fe coordination and P/O co-doping in framework of g-C 3 N 4 played a synergistic effect in charge reconstruction, in which electrons migration driven by coordinated Fe and lone electron pairs delocalization from doped P/O enormously increased electron density and enhanced charge transfer, thus effectively promoting the separation of photogenerated charge carriers. The specific surface area, pore volume and average pore size of OPFCN reached 70.2 m 2 ·g −1 , 0.157 cm 3 ·g −1 and 7.78 nm, respectively, exhibiting a trend increasingly beneficial for photocatalytic adsorption and mass transfer with successive introduction of Fe, P and O into original g-C 3 N 4 . With the simultaneous introduction of Fe, P and O, the optical absorption edge underwent a significant redshift and fluorescence emission intensity dropped by 75 % compared to that of CN, demonstrating the enhanced visible light capturing ability and significantly inhibited recombination of photogenerated charge carriers in OPFCN. As a result, a uranium capture rate of over 98 % was achieved with catalyst dosage of only 5:1 at pH 5 with OPFCN, demonstrating its competitive photo-reductive activity towards uranium(VI) uptake compared with previously reported g-C 3 N 4 -based photocatalysts. Meanwhile, OPFCN exhibited remarkable reusability and stability with even over 65 % uranium recovery rate and almost unchanged peak patterns in XRD and FT-IR in fifth reuse recycle. Additionally, it was demonstrated that e − and O 2 •− were the direct active species to realize the photoreduction of uranium(VI) over OPFCN, in which e − played the dominant role. The modification method of simultaneous Fe coordination and P/O co-doping would be expected to effectively promote the utilization of g-C 3 N 4 -based photocatalysts towards photo-reductive recovery of uranium(VI) from radioactive wastewater.
研究领域:
环境科学
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材料科学
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核化学
·
光催化
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Dongying Deng,Size Zheng,Jinchi Li,Rui Yang,Xinrong Huang,Qian Chen,Jun Xia,Xiaoke Li
Solar-driven interfacial evaporation (SIE) is an innovative and highly effective water treatment method that employs photothermal materials to absorb solar energy and convert it into heat. By concentrating the heat at the water–air interface, SIE avoids the necessity of heating the entire body of water, significantly reducing thermal losses. In this study, we developed a composite material using polyvinyl alcohol (PVA) and sulfobetaine methacrylate (PSBMA) as the framework. And tannic acid (TA), as physical crosslinking, forms more hydrogen bonds with PSBMA and PVA. The coordination interaction between TA and Fe³ ⁺ facilitates the deposition of Fe³ ⁺ on the composite surface, thereby enhancing its light absorption properties. When combined with melamine foam (MF), the composite retains its three-dimensional interconnected structure and exhibits efficient water transport capabilities. When exposed to one-sun irradiation, the composite achieves a light absorption efficiency of 97.6 %, coupled with an evaporation rate of 4.31 kg·m⁻²·h⁻¹ . Additionally, it shows excellent solar desalination capabilities and maintains long-term stability in saline water solutions with concentrations varying from 3.5 to 20 wt%. This study provides an effective solution for addressing freshwater scarcity and wastewater treatment issues.
研究领域:
太阳能脱盐
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材料科学
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环境工程
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光热材料
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水凝胶复合材料
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Mengke Lu,Jianxia Ding,Yupeng Zhang,Xuan Gu,Jiaying Liu,Qinxin Wang,Xiaonan Qiu,Huijun Yu,Fengyi Du,Wei Zhang
Single atom nanozyme (SAzyme) based on carbon dots (CDs) has showed great potential in oncotherapy via ultrasmall size-reinforced atomically dispersed catalytic sites. However, its curative effect is still unsatisfactory due to complex tumor microenvironment and intrinsic resistance. Herein, a coordinated carbon dots (CCDs)-integrated ZIF-8 nanoassembly (Ru/CCDs-PTX@ZIF) was constructed by loading paclitaxel and coating with rutin for synergistic catalytic/chemotherapy. Benefiting from inherited metal-polyphenol coordination, the CCDs exhibited superior peroxidase-like (POD) activity and served as a SAzyme to produce large amounts of hydroxyl radical, resulting in radical-dependent cell cycle arrest. With the assistance of GLUT receptor-mediated endocytosis, the Ru/CCDs-PTX@ZIF triggered the tumor-targeted killing and migration inhibition to suppress tumor progression. This study highlights a promising avenue to broaden the design and applications of CDs-based SAzyme in tumor treatment.
研究领域:
纳米技术
·
癌症治疗
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材料科学
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生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Ya-li Xiang,Ling-ling Yan,Luo-lin Deng,De-yu Tang,Xin-yang Liu,Juan Lin,Qing-han Zhou
Novel strategy is urgently needed to overcome the bacterial infection all over the world due to unreasonable use of biotics. In recent years, nanozymes have attracted great interests of researchers for their high catalytic efficiency and biocompatibility. In this study, a novel multiple enzyme-mimic polypeptide-based carbon nanoparticle was synthesized by N-carboxyanhydride mediated ring opening polymerization (ROP) and Fe coordination for actualizing ROS regulation and photo-thermal therapy. The multiple enzyme-mimic activities of the nanozyme, such as peroxidase, oxidase, catalase, and glutathione peroxidase, were detailly explored in ROS regulation for potential utilization in bacterial inhibition. The photo-thermal effect of the nanozyme was investigated under 808 nm NIR irradiation. Enhanced inhibition rate of the as prepared nanozyme was observed against Gram-negative Escherichia coli (99.03 %) and Gram positive Staphylococcus aureus (99.78 %) planktonic bacteria. Methicillin-resistant Staphylococcus aureus ( MRSA ) was chosen as the drug resistant bacteria model to evaluate the efficiency in bacterial biofilm disruption. Improved healing efficacy of 99.05 % against MRSA wound infection and excellent biosafety were observed in mice model experiments for the as prepared nanozyme. In conclusion, the as synthesized nanozyme with ROS regulation, enhanced bacteria inhibition, and excellent biocompatibility could be potentially applied in clinic against bacterial infection.
研究领域:
纳米技术
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生物医学工程
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材料科学
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微生物学
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治疗学
✓ 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）