ACS Applied Polymer Materials
·
2026
·
IF 5.2
Jiru Jia,Fangqing Ge,Xiaotian Chen,Zhihe Zhang,Lvyi Yang,Jing Qu,Jun Peng,Qi Xiao,Ya Yang,Wei Ma,Jie Chen
Abstract To address the challenge of balancing high-water content with structural stability in hydrogels, gelatin methacryloyl (GelMA) was introduced into a poly(acrylic acid-co-hydroxyethyl acrylate) system. GelMA/PAH composite hydrogels (Gel-PAH) were then prepared through one-step ultraviolet (UV) photocuring, and their network formation and overall properties were tuned by varying the glycerol dimethacrylate (GDMA) content. The Gel-PAH hydrogels exhibited higher hydration capacity and greater surface wettability than the corresponding PAH hydrogels. As the GDMA content increased, the gel fraction and tensile strength of both the PAH and Gel-PAH series generally increased. The tensile strength of the Gel-PAH hydrogels ranged from approximately 1.6 to 2.5 MPa. Gel-PAH-0.15 exhibited an equilibrium water content of 82.55%, a water contact angle of approximately 39°, and a relative cellular metabolic activity of approximately 84% after 24 h. Overall, Gel-PAH-0.15 achieved a favorable balance among network stability, hydration capacity, mechanical performance, and preliminary direct contact cytocompatibility. These results show that a compositionally simple AA/HEA-GelMA system provides a straightforward route to tune hydration and mechanical performance through one-step UV photocuring and adjustment of GDMA content, without introducing additional reinforcing fillers or sequential cross-linking processes.
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INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2024
·Vol. 25
·期 3
·1937
·
IF 4.9
Ye Yuan,Siqi Zhang,Kang Duan,Yong Xu,Kaixuan Guo,Cheng Chen,Somboon Chaemchuen,Dongfeng Cao,Francis Verpoort
α-Hydroxy ketones are a class of vital organic skeletons that generally exist in a variety of natural products and high-value chemicals. However, the traditional synthetic route for their production involves toxic Hg salts and corrosive H2SO4as catalysts, resulting in harsh conditions and the undesired side reaction of Meyer–Schuster rearrangement. In this study, CO2-promoted hydration of propargylic alcohols was achieved for the synthesis of various α-hydroxy ketones. Notably, this process was catalyzed using an environmentally friendly and cost-effective biomass-based ionic liquids/CuCl system, which effectively eliminated the side reaction. The ionic liquids utilized in this system are derived from natural biomass materials, which exhibited recyclability and catalytic activity under 1 bar of CO2pressure without volatile organic solvents or additives. Evaluation of the green metrics revealed the superiority of this CuCl/ionic liquid system in terms of environmental sustainability. Further mechanistic investigation attributed the excellent performance to the ionic liquid component, which exhibited multifunctionality in activating substrates, CO2and the Cu component.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Jiawen Chen,Keting Chen,Tianqi Liu,Mi Wang,Xiangli Liu,Jichuan Zhang,Jiaheng Zhang
Hypothesis In deep eutectic solvent (DES)–H 2 O systems, protein stability is not determined solely by chemical composition but by a general colloid–interface mechanism: there exists a moisture-dependent hydrogen-bonding network reorganization point at which interfacial hydration forces and bulk DES structure are co-optimized. At this “critical point”, protein–solvent interfacial properties—wettability, hydration layer structure, and interfacial tension—are tuned to form stable colloid systems. Experiments We investigated three hydrophilic DESs (choline chloride:glycerol, betaine:glycerol, l -carnitine:glycerol) across a moisture gradient. Bulk and interfacial properties were probed via viscosity, density, refractive index, conductivity, contact angle, interfacial tension, and AFM force spectroscopy. Aggregation and secondary structure of protein colloid systems were evaluated for four proteins using TEM, PSD, UV–Vis, FTIR, and CD. MD simulation was used to demonstrate the supramolecular interaction between proteins and DESs. Findings Hydrophilic DES–H₂O systems undergo hydrogen-bonding network reorganization at ~16 wt% moisture content, where bulk and interfacial properties of all DESs display marked changes. These interfacial transitions correlate directly with maximal anti-aggregation effects and preservation of native protein structures. Our results suggest a mechanism whereby water actively reorganizes the internal hydrogen-bonding network of hydrophilic DESs, leading to protein colloids that are both structurally and colloidally stable. This study established a general colloid–interface framework for protein stabilization in DES–H₂O systems, with potential applications in biomedical, pharmaceutical, cosmetic, and food products.
研究领域:
胶体与界面科学
·
蛋白质化学
·
生物物理化学
·
绿色溶剂
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药物稳定化
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CEMENT & CONCRETE COMPOSITES
·
2025
·
IF 13.1
Wenyang Zhang,Yuan Fang,Dapeng Zheng,Haibin Yang,Xiangpeng Cao,Le Shuai,Kunde Zhuang,Feng Xing
In response to the scarcity of freshwater resources and the high environmental impact of cement production, this research explores the use of seawater to prepare alkali-activated cementitious materials (AAMs). To avoid the adverse effects of high concentrations of Cl − in seawater on performance, the feasibility of synergistic application of hydroxysodalite and seawater in AAMs systems was proposed. By setting the hydroxysodalite content and mixing water type, the effects on the early hydration behavior, Cl − binding capacity, and microstructural characteristics of AAMs were systematically investigated. The results show that hydroxysodalite improves the initial flowability (8 %–14 %) while shortening the setting time (initial setting and final setting are shortened by 32 %–40 % and 26 %–33 %, respectively). Compared with the deionized water mixing system without hydroxysodalite, hydroxysodalite increased the compressive strength of the seawater mixing system by 17.2 %. Seawater causes OH − in hydroxysodalite to migrate out of the β cage, and induces the formation of chlorine-bearing sodalite. At the same time, hydroxysodalite promotes the formation of more C-A-S-H gel, which not only reduces the total porosity but also increases the gel pore ratio. The synergistic effect of these two aspects significantly enhances the chloride ion binding capacity of AAMs. In addition, the binding behavior of AAMs towards Cl − follows the Freundlich model. Overall, the introduction of hydroxysodalite provides an effective strategy for significantly improving the early performance and Cl − binding capacity of AAMs mixed with seawater.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Hongyu Ge,Zhenhua Fang,Jun Yang,Xiyue Zhang,Zhien Zhang,Xiaohua Liu
Solar-driven interfacial evaporation technology is widely regarded as a cost-effective and sustainable method for freshwater production. However, conventional evaporators are confined to two-dimensional (2D) structures to ensure sufficient water supply when treating high-salinity brine, which suffer from limited evaporation rates and poor sustained evaporation due to the adverse effects of salt ions. This work introduces a novel three-dimensional (3D) evaporator composed of poly(vinyl alcohol) (PVA) sponge, zwitterionic polyelectrolyte hydrogel, and multi-walled carbon nanotubes (MWCNTs). The porous PVA sponge enhances water transport and mechanical robustness, while the anti-polyelectrolyte effect of the zwitterionic polyelectrolyte hydrogel further improves water transport performance in brine. Additionally, the anti-salt-ion hydration effect of the zwitterionic polyelectrolyte hydrogel activates water molecules in brine to promote evaporation. Under 1 kW m −2 solar irradiance, the 7-cm-high evaporator reaches a stable evaporation rate of 3.35 kg m −2 h −1 in 10 wt% brine during a continuous 9-h operation, with no observable salt deposition or structural degradation on its surface. Furthermore, the zwitterionic polyelectrolyte hydrogel exhibits excellent antibacterial properties, providing additional reliability for practical desalination applications. In outdoor experiments using turbid seawater under natural winter conditions, a simple device incorporating the 3D evaporator gets a freshwater collection rate of 1.37 kg m −2 h −1 , with the ion concentration in collected freshwater reduces by 3–4 orders of magnitude compared to raw seawater, meeting the World Health Organization drinking water standards. This work provides a new pathway and design principles for developing next-generation solar evaporation systems applicable to both seawater desalination and wastewater treatment.
研究领域:
材料科学
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环境工程
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能源技术
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CHINESE JOURNAL OF CATALYSIS
·
2019
·
IF 4.914
Zhi-Hua Zhou,Xiao Zhang,Yong-Fu Huang,Kai-Hong Chen,Liang-Nian He
Inexpensive and efficient Cu(I) catalysis is reported for the synthesis of α-hydroxy ketones from propargylic alcohols, CO 2 , and water via tandem carboxylative cyclization and nucleophilic addition reaction. Notably, hydration of propargylic alcohols can be carried out smoothly under atmospheric CO 2 pressure, generating a series of α-hydroxy ketones efficiently and selectively. This strategy shows great potential for the preparation of valuable α-hydroxy ketones by using CO 2 as a crucial cocatalyst under mild conditions.
研究领域:
有机化学
·
催化化学
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PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2023
·Vol. 26
·期 3
·1625-1629
·
IF 3.3
Yang Li,Jiating Wu,Yuhe Zheng,Yajing Fan,Ting Bian,Xinyu Fan,Santana Vimbai Masendu,Junhua Xu,Zongping Shao
Photocorrosion is the most ticklish problem of cuprous oxide (Cu2O), and it is widely assumed that the deactivation of Cu2O photocathodes in solar water splitting is caused by spontaneous oxidation–reduction (REDOX) reactions. However, this work shows that 〈100〉-oriented Cu2O photocathodes undergo a non-REDOX hydration deactivation mechanism. Briefly, water molecules are embedded in the Cu2O crystals at low potential under illumination and produce amorphous CuOH, which can be dehydrated at high potential to heal the Cu–O–Cu bonds and regenerate foamed Cu2O films with a three-dimensional skeleton structure. This study provides a new insight towards the protection and application of Cu2O photocathodes.
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CEMENT & CONCRETE COMPOSITES
·
2022
·
IF 9.93
Qiaomu Zheng,Chen Li,Facheng Song,Bei He,Wenting Li,Zhengwu Jiang
Secondary hydration is the main driving force of autogenous self-healing and directly impacts the closure of cracks in damaged cementitious materials . In fiber-reinforced cement composites , secondary hydration also dominates the regeneration of the fiber-matrix interface during the self-healing processes. As an important factor influencing the cement hydration , silica fume (SF) addition can be crucial to the self-healing performance of cementitious materials and composites. In this paper, the effect of SF on the autogenous self-healing of ultra-high-performance fiber-reinforced concrete was investigated. With a ≥20% SF addition, the secondary hydration the cement matrix adjacent to the cracks was accelerated. The dissolution of amorphous silica and the formation of Si-containing healing phases was observed. These effects predominated the closure of the mouth and the inner part of the cracks. SF addition also enhanced the regeneration of fiber-matrix interface by promoting the growth of self-healing products in these areas. The closure of cracks and the regeneration of fiber-matrix interface are both responsible for the restoration of flexural properties.
研究领域:
建筑材料
·
水泥基复合材料
·
土木工程材料
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自修复材料
·
结构工程
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Xinming Wu,Bin Huang,Qiguan Wang,Yan Wang
The application of two-dimensional layered hybrid materials in supercapacitor electrodes has high energy density. However, the hybrid assembly and electrochemical energy storage mechanism of multifarious layered electrode materials are still unclear. In this work, a two-dimensional interstratification assembly hybrid electrode by using electrostatic assembly between MXene modified with cetyl trimethylammonium bromide cation (CTAB) and NiCo-LDHs modified with dodecyl benzene sulfonic acid anion (DBS) is presented. As a result, the self-restacking of MXene and NiCo-LDHs nanosheets are effectively prevented, leading to a regular interstratification structure and large interlayer spacing, which accelerate diffusion of electrolyte ions and possess more electrochemical activity sites. The freestanding MXene/NiCo-LDHs electrode displays a much higher specific capacitance of 1207 F g −1 at a scan rate of 0.5 A g −1 , an impressive rate capability with 93% capacitance retention after 5000 cycles. Moreover, it shows maximum energy density of 107.3 Wh kg −1 (98.5 mWh cm −3 ) at a power density of 571 W kg −1 (524 mW cm −3 ), which is among the highest values reported for MXene and NiCo-LDHs based materials in aqueous electrolytes. This significant electrochemical performance is mainly attributed to hydration of two-dimensional electrodes and exchange or adsorption of interlayer anion-cation.
研究领域:
材料科学
·
电化学
·
储能
·
纳米材料
·
超级电容器
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Small
·
2022
·Vol. 18
·期 16
·2107915
·
IF 15.153
Xiaohui Li,Hanming Li,Weihui Bi,Yilong Song,Chengda Ge,Anran Wang,Zisheng Wang,Mingwei Hao,Yifei Kang,Yang Yang,Qingfeng Dong
Fabrication of organic–metal-halide perovskite micro-nano array structures draws attention to the potential application in polarized light, high-resolution X‑ray imaging, light-emitting diodes, and lasers. However, it is still challenging to achieve the growth of controllable long-range ordered nanostructure arrays by chemical solution-based techniques. Herein, controllable epitaxial growth of long-range ordered micro-nano arrays on MAPbI 3 single crystal (SC) surface is reported. A hydrated intermediate phase is found that can effectively regulate in-plane and out-plane orientated growth, respectively. This is attributed to the regulation of growth thermodynamics by hydration 0D perovskite intermediate phase enabling free recombination of PbI 4 2– octahedral cages. Further, it is found that the degree of hydration is the key to the realization of in-plane and out-plane growth. Meanwhile, polarization emission and amplified spontaneous emission property are observed in highly oriented nanorod arrays with potential applications in anti-counterfeiting polarized emission.
研究领域:
材料科学
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纳米技术
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光电子学
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晶体生长
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光子学
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FUEL
·
2026
·
IF 7.8
Yushi Feng,Peng Su,Jiaan Jing,Liheng Zhang,Fang Wang,Jingwei Li,Yu Shen
The development of reversible protonic ceramic cells (R-PCCs) is limited by the sluggish reaction kinetics of oxygen electrode. Herein, we propose that introducing potassium (K) into Ba(Co 0.7 Fe 0.3 ) 0.85 Ta 0.15 O 3-δ (BCFT) not only promotes the oxygen vacancy formation and proton uptake, but also enhances oxygen exchange and oxygen dissociation capability, thereby leading to enhanced catalytic activity. R-PCCs with the obtained Ba 0.9 K 0.1 (Co 0.7 Fe 0.3 ) 0.85 Ta 0.15 O 3-δ (BKCFT10) oxygen electrode exhibit good performance in both fuel cell mode (1.21W cm −2 at 650 °C) and electrolysis mode (−1.76 A cm −2 at 1.4 V and 650 °C) compared to pristine BCFT (1.06W cm −2 in fuel cell mode and −1.63 A cm −2 at 1.4 V in electrolysis mode, respectively). Additionally, the R-PCCs show excellent stability in fuel cell (200 h), electrolysis (200 h) modes, and reversible cycling measurement (15 cycles for 30 h). The systematic experiments and theoretical calculations convincingly demonstrate that potassium substitution is an effective method for developing novel oxygen electrode materials for R-PCCs.
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Materials
·
2025
·Vol. 18
·期 15
·3560
·
IF 3.2
Shaoxiong Ye,Pan Feng
Understanding the hydration behavior of cementitious materials is crucial as it governs the setting, strength development and long-term durability of concrete. This study provides fundamental insights into these processes by investigating the early hydration of tricalcium aluminate (C3A) with quartz as a novel model system for multiple clinker phases. Employing a multi-technique approach combining conductivity, calorimetry and microscopy, we systematically examine the concurrent effects of product layer formation, C3A’s particle size and defect density, and salts on dissolution kinetics and early-stage reaction pathways. Results indicate that product layer formation shifted C3A’s rapid dissolution toward diffusion-controlled regimes. Reduced particle size and increased defect density accelerated the dissolution and hydration kinetics. Sulfates and chlorides differentially altered reaction pathways, with preferential sulfate reactivity driving ettringite formation. These mechanistic insights advance fundamental understanding of the hydration behavior of cementitious material.
研究领域:
水泥化学
·
材料科学
·
水化动力学
·
建筑材料
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高影响因子
危险品化学品经营许可证（带存储）