ADVANCED FUNCTIONAL MATERIALS
·
2023
·
IF 19
Xiaofeng Liu,Lei Jia,Yufen Li,Ruoxi Zhao,Chao Wu,Zhimin Xie,Zhongjun Cheng,Yuyan Liu,Dongjie Zhang
Switchable adhesion, especially that responds to both solids and liquids simultaneously, has recently attracted much attention due to its wide applications. However, it is hard to endow a surface with switchable solid/liquid adhesion and high maximum solid adhesion at the same time due to the opposing requirement of solid contact fraction. In this paper, a shape memory/elasticity dual-structure adjustable strategy to satisfy that special demand is offered. In detail, by constructing the shape memory epoxy resin arrays with spherical polyurethane mushroom on Fe 3 O 4 doped substrate, a smart photo/thermal responsive material with switchable solid/liquid adhesion is prepared. In the work, the structure of the shape memory resin arrays can be reversibly changed between upright and collapsed states, leading to switchable solid and liquid adhesion. Meantime, the structure of the polyurethane mushroom can be squeezed to increase the contact area with the solid and spontaneously recovered, which can effectively improve the maximum solid adhesion with no effect on liquid adhesion. Furthermore, the obtained material has good cyclicity and universality, which has been applied to selectively pick silicon wafers and water droplets. The findings of this study may provide new strategies for the development of smart adhesive materials.
研究领域:
材料科学
·
表面工程
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产品关联
DOI
高影响因子
DESALINATION
·
2024
·
IF 8.3
Yaoxian Hu,Hui Su,Zhaowu Zhu,Minxiu Zhou,Tao Qi
The tributyl phosphate (TBP)/FeCl 3 system has been widely used for lithium extraction from high‑magnesium salt lakes. However, at high TBP concentrations, the Li/Mg selectivity is significantly lower. This study revealed that at high TBP concentrations, TBP alone extracted Mg 2+ to form MgCl 2 ·6TBP as the main product, thus affecting the extraction efficiency of Li + . On this basis, a neutral phosphate with long carbon chains, trioctyl phosphate (TOP), was used to replace TBP. The separation capacity and extraction mechanism of the TOP/FeCl 3 system were studied, and density functional theory (DFT) calculations were employed to model the cationic complexes of the TOP and TBP systems. The results showed that in the presence of FeCl 3 , the extraction efficiency of Li + (E Li ) reached 91 %, and the Li/Mg separation factor (β Li/Mg ) was 5688. In contrast, in the TBP/FeCl 3 system with the same concentration, the E Li and β Li/Mg values were much lower at 74 % and 239, respectively. Furthermore, the TOP complex of Li + had shorter Li − O bond lengths and a more negative binding energy, while that formed with Mg 2+ had longer Mg − O bond lengths and the smallest HOMO–LUMO gap, indicating that TOP bonded more stably with Li + and was less prone to Mg 2+ extraction than TBP.
研究领域:
化学工程
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材料科学
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产品关联
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2024
·
IF 6.7
Lihong Yu,Chenglin Yang,Shuting Cheng,Qianqian Jiang,Yuehong Pang,Xiaofang Shen
The recognition of small molecules plays a crucial role in disease diagnosis, environmental assessment, and food safety. Currently, their recognition elements predominantly rely on antibodies and aptamers while suffering from a limitation of the complex screening process due to the low immunogenicity of small molecules. Herein, we present a top-down computational design strategy for molecule recognition peptides (MRPs) for enzyme-peptide self-assembly and chemiluminescence biosensing. Taking ochratoxin A (OTA) as an illustrative example, human serum albumin (HSA) was selected as the parental protein due to its high affinity for OTA binding. Through iterative computational simulations involving the binding domain of the HSA-OTA complex, our strategy identified a specific 15-mer MRP (RLKCASLKFGERAFK), which possesses excellent binding affinity (38.02 ± 1.24 nM) against OTA. Molecular dynamics simulations revealed that the 15-mer MRP unfolds into a flexible short chain with high affinity for OTA, but exhibits weak or no binding affinity with five structurally similar mycotoxins. Furthermore, we developed a novel enzyme-peptide self-assembly approach mediated by calcium(II) to obtain nanoflowers, which integrates both the recognition element (MRP) and the signal translator (enzyme) for chemiluminescence biosensing. The assembled nanoflowers allow MRPs to be directly utilized as a tracer for OTA biosensing without labeling or secondary antibodies. This computational-to-application approach offers a new route for small-molecule recognition.
研究领域:
生物化学
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计算生物学
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分析化学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Qiang Liu,Ping Wang,Bin Liao,Yuan Luo,Kaiqi Yan,Jingjie Zhang
The 3D structure design as an available pathway is sufficiently demonstrated to improve the evaporation performance of solar evaporators. However, the evaporator with a 3D structure exhibiting high evaporation performance results in an increased rate of salt precipitation, which places a higher demand on salt resistance. Therefore, it remains a great challenge to overcome the salt accumulation at the evaporator surface, especially for a 3D cylindrical evaporator. Here, a novel 3D evaporator is developed that integrates an air-laid paper stick and chitosan/CNT (CSC) aerogel, featuring unique water transport channels designed to facilitate the radial transport of salt solution and directional precipitation towards the top edge. It is proved that increasing the height of the evaporator effectively improves the evaporation performance through experiments and thermodynamic calculations. In addition, the effect of relative humidity on the evaporation performance of the 3D interfacial evaporator was systematically studied. On this basis, the effects of including material properties, solution properties, and working environment on the salt deposition behavior are further investigated, which can guide researchers to rationally design according to specific conditions to achieve edge-directed salt deposition.
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
Industrial Chemistry & Materials
·
2023
·Vol. 2
·期 1
·110-117
·
IF 0
Baoliu Zhuo,Aidong Tan,Zhipeng Xiang,Jinhua Piao,Wenhao Zheng,Kai Wan,Zhenxing Liang,Zhiyong Fu
Two-dimensional metal–organic-framework (2D MOF) nanosheets with a modular nature and tunable structures exhibit a bright future for sensors, separation, and catalysis. Developing ultrathin 2D MOF nanosheets with unique physical and chemical properties is urgently required but very challenging. Although the chemical exfoliation strategy has been regarded as a promising way to exfoliate large amounts of three-dimensional (3D) pillar-layered MOFs, this method still faces many problems and remains insufficient. In this study, a novel chemical exfoliation method is developed for the target preparation of 2D MOF monolayers from the 3D pillar-layered MOFs. The Co/Zn/Cu-MOFs with a pillar ligand of trans-1,2-bis(4-pyridyl)ethylene (bipyen) are subjected to be broken by the cleavage of CC bonds in the bipyen ligands via an ozone oxidation reaction. As chemical exfoliation is processed via the oxidation of the pillar ligand by ozone, the thickness of the 2D MOFs can be tuned by the control of oxidation time and the obtained 2D Co/Zn/Cu-MOF monolayers are functionalized with a –COOH group. This study provides an effective and general chemical exfoliation method to prepare monolayer MOFs from the 3D pillar-layered MOFs with bipyen as the pillar ligand.
研究领域:
材料科学
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化学
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纳米技术
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DOI
JOURNAL OF POWER SOURCES
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2021
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IF 9.127
Jiahui Zhou,Feng Wu,Guangling Wei,Yutong Hao,Yang Mei,Li Li,Man Xie,Renjie Chen
Metallic lithium (Li) is a promising anode candidate for high-energy-density Li batteries . The problems of dendrite growth and volume expansion caused by Li metal cycling can be suppressed by the introduction of a 3D conductive skeleton. However, as the cycle progresses, the Li metal deposits on the upper surface of the skeleton structure, making the host ineffective. Herein, a 3D porous host is designed comprising ZnO nanoparticles having lithiophilic gradients assemble on an interconnected 3D carbon nanotube/graphene skeleton. The 3D porous carbon nanotube/graphene structure exhibits excellent conductivity and a large specific surface area, which reduces the local current density and provides ample space for Li deposition. More importantly, the lithiophilic gradient ZnO nanoparticles anchored on the graphene sheets enable hierarchical induction of Li-ion nucleation and guide Li deposition into the host, preventing preferential deposition at the top surface of the host even during prolonged Li stripping/plating. The host delivers a high Coulombic efficiency of up to 98.2% for at least 500 cycles, and the symmetrical cell comprising the host operates smoothly for >920 h (<20 mV). The as-prepared full cell, paired with a LiFePO 4 cathode, exhibits an excellent rate capability and flat surface morphology.
研究领域:
材料科学
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电化学
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能源存储
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纳米材料
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电池技术
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表面工程
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固态离子学
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
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2021
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IF 4.527
Yongchao Fang,Xiufang Cui,Chao Yan,Zhuo Chen,Yongzhi Jing,Xin Wen,Guo Jin,Haoliang Tian
In this study, a La 0.8 Ba 0.2 TiO 3− δ (LBT) upper layer was deposited on an yttria-stabilized zirconia (YSZ) thermal barrier coating (TBC) through atmospheric plasma spraying . The thermal cycling behaviors of the YSZ single-ceramic-layer and LBT–YSZ double-ceramic-layer coatings at 1000 °C were investigated through a water quenching method. Moreover, phases, microstructural evolution , and elemental distributions were studied through by X-ray diffraction and scanning electron microscopy–energy-dispersive X-ray spectroscopy. The results showed that the thermal cycling lifetime of the LBT–YSZ coating was 27% higher than that of conventional YSZ coating. The conventional YSZ coating failed after 251 cycles because of the joining of the continuous horizontal and vertical cracks caused by the formation of thermal growth oxides and the bending effect of the single-ceramic-layer structure. The thermal cycling behavior of the LBT–YSZ coating was different from that of the YSZ coating at the edge and center. Although the former was similar to the failure behavior of the YSZ coating, the cracks in the vertical direction were deflected as a result of the bending effect of the double-ceramic-layer structure during quenching. This deflection led to the formation of slope cracks with longer propagation paths and slope spallation zones. The latter showed small-debris spallation on top of the LBT upper layer due to the lower fracture toughness of the LBT, which protected the central coating from the structural damage of the ceramic coating . These two behaviors would either release the thermal stress or increase the crack-propagation energy requirement in the ceramic coating, consequently improving the thermal cycling lifetime of the LBT–YSZ coating. In summary, depositing an LBT upper layer could potentially improve the thermal cycling lifetimes of TBCs.
研究领域:
材料科学
·
涂层与薄膜
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热工程
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表面工程
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产品关联
DOI
高影响因子
Journal of Nanostructure in Chemistry
·
2021
·Vol. 11
·期 4
·707-719
·
IF 6.391
Enwereuzo Onyekachi Oluchi,Akakuru Obinna Chigoziem,Uwaoma Romanus Chinonso,Elemike Elias Emeka,Akakuru Ozioma Udochukwu
Controlled release technology has continuously attracted attention as a strategy to deliver active agents to specific internal body regions with attendant cost-effectiveness among other intriguing merits. Here, drug-loaded nanoparticles (NPs) are synthesized for ultimate application in the treatment of gastroesophageal reflux disease (GERD), leveraging the benefits of controlled release strategy. To achieve this, eggshell membranes (ESMs) were extracted and combined with chitosan (CHS) to rationally obtain self-assembled CHS–ESM NPs that served as a novel nanocarrier to effectively compartmentalize a GERD-therapeutic drug famotidine (FTD) and form self-assembled FTD@CHS–ESM NPs. Advantageously, the proof-of-concept FTD@CHS–ESM NPs offer superlative tissue tolerance. The cumulative FTD release is 89% after 12 h at pH 1.2, suggesting the capability of FTD@CHS–ESM NPs for effectual controlled drug release; a testimonial of the effective compartmentalization of FTD in the nanocarrier. Furthermore, the release of FTD from the FTD@CHS–ESM NPs is best described by Higuchi square root model, in a non-Fickian diffusional release mechanism ( n = 0.584 and 0.582 in pH 1.2 and pH 6.8, respectively). The drug release system demonstrated in this work, therefore, holds strong promise for the oral nanomedical treatment of GERD in vivo, and promotes the rational synthesis of organic-based biocompatible nanomaterials for biomedical application. Graphic abstract
研究领域:
药剂学
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生物医学工程
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材料科学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Wenbin Jin,Jingjing Wang,Hai Wan,Yuan Liang,Shuohan Huang,Yuwei Chen,Peng Wei,Qun Shao,Yanping Wang,Yong He,Yumin Xia
With the rapid development of marine transportation, frequent oil leakage will inevitably occur. Therefore, oil–water separation had become an important research topic. The polyoxymethylene (POM) microfiber is a potential oil–water separation material with very good chemical stability, hydrophobicity, and lipophilicity, as well as unique microfiber recyclability and deformability. In this paper, the POM microfiber (PMF) was prepared using a method inspired by natural bamboo cellulose. PMF can be directly used for oil adsorption with a maximum of 19.5 times of oil adsorption capacity (OAC). The water contact angle (WCA) in oil of POM microfiber membrane (PMFM) can reach 160° and the oil–water separation efficiency was more than 99%. In addition, the recyclability allowed the PMF to repeatedly separate the oil–water mixture, and the deformability ensured that it can be used in various oil–water separation situations with different shapes. Moreover, only deionized water was used in the top-bottom preparation strategy of PMF without any chemical reagents. Therefore, this eco-friendly strategy had important implications for the preparation of microfiber materials.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Materials Chemistry Frontiers
·
2023
·Vol. 7
·期 8
·1624-1632
·
IF 7
Kangkang Wang,Zhexue Chen,Yueqi Li,Yong Zhang
Semiconductor quantum dots (QDs) are of great interest for a wide range of applications. Herein, we report the top-down production of CdSe QDs with a super small size (about 3 nm) and high yield (14%). The as-produced QDs exhibit different optical properties from those of colloidal QDs. This is probably due to the generation of numerous bare edges during the process of silica-assisted ball-milling. The CdSe QD-based substrate could serve as a surface-enhanced Raman scattering (SERS) substrate for the ultrasensitive recognition of probe molecules at trace levels, which are mainly attributed to the special edge–edge interactions and charge transfer (CT) enhancement mechanism. The substrate exhibits good reproducibility, uniformity, and high enhancement factor (5.05 × 106) with an expansion of the ultra-low limit of detection (LOD) to 10−10 M. It has also been successfully used in the reliable, quantitative, and label-free detection of uric acid (UA) at a low concentration (1 μM), which facilitates the early prevention of gout disease. This QD-based platform not only confirms the feasibility of SERS analysis but also provides ideas for the early detection of residues.
研究领域:
纳米技术
·
分析化学
·
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2026
·
IF 8.9
Qiyu Zhang,Jiachen Zuo,Yuanhao Wang,Lin Lu,Hongxing Yang
Driven by carbon neutrality and petroleum depletion, renewable bio-based composites with environmental durability are urgently needed. However, the inherent hydrophilicity of agricultural waste and the poor durability/formaldehyde emission of traditional surface modifications limit engineering applications. This study proposes a “top-down” interfacial engineering strategy to resolve biomass–hydrophobic particle compatibility, achieving inherent hydrophobicity without adhesives. Using absolute ethanol as a low-polarity carrier, silane-modified hydrophobic silica (SiO₂) was uniformly dispersed in wheat straw fibers, with cationic starch as an interfacial bridging agent. The effects of SiO₂ particle size (30 nm–30 μm) and addition level (10%–50%) on morphology, mechanics, and wetting were investigated. With 30 nm SiO₂ at 25% (N30–25), the board achieves superhydrophobicity (water contact angle 150°, sliding angle 15°) and high bending strength (22.08 MPa), balancing hydrophobicity and reinforcement. Mechanistically, cationic starch forms a 3D cross-linked network via electrostatic attraction and hydrogen bonding. The nano-SiO₂ and micro-fiber bundles create a micro/nano hierarchical rough structure that traps air to form a stable Cassie-Baxter air cushion. Environmental durability tests confirm the bulk hydrophobic network remains stable under mechanical abrasion, water erosion, and UV aging. This work provides a theoretical basis for high-value agricultural waste utilization and a pathway for durable, eco-friendly green composites.
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产品关联
DOI
高影响因子
ChemSusChem
·
2023
·Vol. 17
·期 4
·e202301210
·
IF 8.4
Gaozhi Yuan,Xing Wei,Qing Zhang
Graphical The commonly used modified Hummers method to produce carbon nanosheets requires substantial use of strong acid and oxidizer. With natrual abundant biomass materials as carbon precursor, a facile and eco-friendly strategy is proposed by extracting thin cellulose sheets from cell wall structures.The method is applicable to multi-sourced biomass and the obtained carbons exhibit excellent performance in both aqueous and organic electrolytes. Carbon electrode materials with superior rate performance are highly demanded in application scenarios of high power output/input, especially when paired with organic electrolyte for extended voltage window and high energy storage. By extracting thin sheets of entangled cellulose fibers from cell wall structures, porous carbon nanosheets as templated from the cellulose sheets are synthesized. Evident thickness reduction effect has been demonstrated with thickness reduced from several micrometers to several nanometers of the obtained thickness-reduced activated carbon nanosheets (TRAC), which endow the material with a large surface area and high pore volume. The obtained TRAC exhibits significantly enhanced ion diffusion kinetics and superior rate capability thanks to the shortened diffusion pathway and suitable pore size distribution. Effects of sonication time have also been investigated, showing a trade-off between ion diffusion kinetics and pseudocapacitive contribution. This thickness-reduction method is extendable to many other biomass sources as cellulose sheets are widely existed in nature, offering a practical and easy-to-implement strategy of fabricating porous carbon nanostructures for efficient energy storage and utilization.
研究领域:
材料科学
·
能源存储
·
环境科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）