Nano Today
·
2024
·
IF 13.2
Bin Wang,Hui Zhu,Brian Shutes
The emergence of hydrogel evaporators has greatly improved the evaporation rate and has attracted widespread attention. However, single-strategy design yields limited evaporation rates and anti-fouling properties, restricting their utility. Here, we report a superhydrophilic interconnected porous hydrogel (SIPH) evaporator that incorporates multiple strategirs. This design enhances water transport, light absorption , and heat localization, reducing heat loss from the evaporating surfaces. By modulating polymer network-water interactions with −NH 2 groups, we achieved a high proportion of activated water, lowering the evaporation enthalpy to about one-third that of pure water. Based on this diversified design, SIPH achieves a high evaporation rate of 4.80 kg m −2 h −1 under one sun. Moreover, SIPH demonstrates excellent stability in various water qualities and long-lasting anti-pollution properties, offering significant practical application potential.
研究领域:
材料科学
·
环境工程
·
能源研究
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Yunlong Yu,Zixuan Song,Boran Xu,Yunxin Tang,Qiangqiang Sun,Shaobing Zhou
Flow alters the charge distribution at the solid–liquid interface. However, the property change in bulk liquids in the flow has received little attention. In this article, we show that the charge separation between liquid and solid surfaces is controllable, and interfacial chemistry is changed to make electrostatically charged and reactive water. We designed a pipeline with unequal cross-sectional diameters at both ends to enhance the pressure difference between the two ends of the pipeline. By adjusting the flow rate, pipeline length, and cross-sectional diameter of the conical port, we achieved flexible control of the amount of liquid charge. To further regulate the liquid charge, we grafted charged molecular brushes onto the inner wall of the pipeline. In particular, the polarity of liquid charges is opposite to the polarity of the pipeline’s inner wall surface. Finally, we demonstrated the chemical activity of charged water through oxidative degradation of methylene blue and reduction of chloroauric acid.
研究领域:
物理化学
·
材料科学
·
界面科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Yonghui Xing,Wenjing He,Changshui Cai,Song Liu,Yi Jiang,Shuxin Tan,Chenchen Qu,Xiuli Hao,Peng Cai,Qiaoyun Huang,Wenli Chen
Soil mineral properties significantly influence the mobility of Cd(II) within the soil matrix. However, the limited understanding of how microbial metabolism affects mineral structure at the microscale poses challenges for in situ remediation. Here, we designed a model calcium-phosphate system in a urea-rich environment to explore the impact of different microbial activation levels on Cd(II) fixation at mineral interfaces. Findings indicate that bacteria affected the morphological structure of the minerals and the amount of carbonate incorporation (average 5.4 %), thereby enhancing Cd(II) immobilization capacity (up to 9.6 times). This process is influenced by the intensity of bacterial activation, as reflected in their urease activity. Extracellular substances secreted by bacteria are also essential for activating minerals, contributing to a sustained decrease in their surface potential. The introduction of activated minerals in potting experiments markedly stimulated the soil urease activity, promoting the enrichment of functional bacteria and facilitating Cd(II) passivation, thereby reducing Cd(II) uptake by vegetables. An extensive soil survey further corroborated a linkage between soil total phosphorus and urease activity, indirectly emphasizing the universality of phosphate mineral-urease microbial interactions and their critical role in the morphological transformation of Cd(II). Our findings highlight the functional dynamics of urease microorganisms in shaping soil mineral landscapes and regulating heavy metal mobility, with broad implications for soil microscale remediation strategies.
研究领域:
环境科学
·
微生物学
·
土壤学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Materials Technologies
·
2025
·
IF 6.2
Qianrui Zeng,Yang Yang,Jie Shi,Qingxin Guan,Jia Li,Wei Li
Limited cells and growth factors, insufficient mechanical properties, and the hypoxic status in defect areas are the severe challenges faced by bone tissue engineering (BTE) scaffolds, currently. In this work, a 3D printable composite scaffold (Gel-MCM-41-CaO 2 ) without cells or growth factors is designed to promote vascularized bone regeneration through sustained release of oxygen and bioactive ions, utilizing a 1D tube encapsulation release technology to achieve slow release of oxygen from both ends of MCM-41-CaO 2 . Calcium silicate is used as a cross-linking agent and a bioactive agent to cross-link with sodium alginate, combined with polyacrylamide to form a hybrid double network, which endows the hydrogel with excellent compressive strength and 3D printable properties. Based on amounts of data in vitro and in vivo, the oxygen and silicon ions released from this hydrogel scaffold can promote cell proliferation and differentiation, upregulate the expression of osteogenic and angiogenic-related genes, and promote angiogenesis and osteogenesis. This work presents a strategy for fabricating BTE scaffolds without the need for cells or growth factors, with the potential to be applied in clinical bone regeneration and repair.
研究领域:
组织工程
·
材料科学
·
再生医学
✓ 已验证
产品关联
DOI
高影响因子
Soft Matter
·
2022
·Vol. 18
·期 20
·3856-3866
·
IF 4.046
Panpan Li,Aixin Song,Jingcheng Hao,Xu Wang
In biology, nonequilibrium assembly is characterized by fuel-driven switching between associating and nonassociating states of biomolecules. This dynamic assembly model has been used routinely to describe the nonequilibrium processes in synthetic systems. Here, we present a G-quartet-based nonequilibrium system based on fuel-driven co-assembly of guanosine 5′-monophosphate disodium salt hydrate and urease. Addition of lanthanum(III) ions to the system caused macroscopic dynamic switching between precipitates and hydrogels. Interestingly, combined analyses of the nonequilibrium systems demonstrated that molecules could switch between two distinct associating states without undergoing a nonassociating state. This finding suggested a nonequilibrium assembly mechanism of topological reconfiguration of molecular assemblies. We detailed quantitatively the nonequilibrium assembly mechanism to precisely control the phase behaviors of the active materials; thus, we were able to use the materials for transient-gel-templated polymerization and transient circuit connection. This work presents a new nonequilibrium system with unusual phase behaviors, and the resultant active hydrogels hold promise in applications such as fluid confinements and transient electronics.
研究领域:
生物化学
·
材料科学
·
合成生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Energy Storage Materials
·
2024
·
IF 18.9
Xiaoyun Xu,Songmei Li,Zicheng Luo,Chuangchuang Zhang,Dashan Zhang,Jia Hui,Shubin Yang,Bin Li
The key to realizing the application of aqueous electrolytes to extreme environments lies in rational constraints on active water. Herein, a strategy for local aggregation electrolyte (LA-Zn(OTf) 2 ) with dynamic anchoring of active H 2 O is proposed and achieved by precisely regulating the molecular weight and addition amount of organic long chains enriched with hydrogen-bond acceptors. The results show that the saturated vapor pressure of LA-Zn(OTf) 2 is reduced by 16 % at 90 °C and it does not freeze at -30 °C, achieving a wide operating temperature range of 120 °C. In LA-Zn(OTf) 2 , the local aggregation of Zn 2+ , solvent water, and ether bonding groups form a contact ion pair (CIP) structure, which enables rapid and stable deposition of Zn metal. Moreover, a stable organic-inorganic solid electrolyte interface (SEI) is formed to suppress corrosion and hydrogen evolution . At room temperature , the Zn|LA-Zn(OTf) 2 |Zn symmetric cell is stably cycled for over 4000 h at 1 mA cm -2 . At the extreme temperatures of 90 and -30 °C, the Zn|LA-Zn(OTf) 2 |NVO full cells achieve stable cycling more than 1400 and 2000 cycles at 0.5 A g -1 , respectively, and the capacity retention rates are 70.1 % and 80.5 %, respectively.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Pharmaceutics
·
2023
·Vol. 15
·期 10
·2384
·
IF 5.4
Liang Zhu,Qian Hou,Meijun Yan,Wentao Gao,Guoke Tang,Zhiqing Liu
Osteogenic scaffolds reproducing the natural bone composition, structures, and properties have represented the possible frontier of artificially orthopedic implants with the great potential to revolutionize surgical strategies against the bone-related diseases. However, it is difficult to achieve an all-in-one formula with the simultaneous requirement of favorable biocompatibility, flexible adhesion, high mechanical strength, and osteogenic effects. Here in this work, an osteogenic hydrogel scaffold fabricated by inorganic-in-organic integration between amine-modified bioactive glass (ABG) nanoparticles and poly(ethylene glycol) succinimidyl glutarate-polyethyleneimine (TSG-PEI) network was introduced as an all-in-one tool to flexibly adhere onto the defective tissue and subsequently accelerate the bone formation. Since the N-hydroxysuccinimide (NHS)-ester of tetra-PEG-SG polymer could quickly react with the NH2-abundant polyethyleneimine (PEI) polymer and ABG moieties, the TSG-PEI@ABG hydrogel was rapidly formed with tailorable structures and properties. Relying on the dense integration between the TSG-PEI network and ABG moieties on a nano-scale level, this hydrogel expressed powerful adhesion to tissue as well as durable stability for the engineered scaffolds. Therefore, its self-endowed biocompatibility, high adhesive strength, compressive modulus, and osteogenic potency enabled the prominent capacities on modulation of bone marrow mesenchymal stem cell (BMSCs) proliferation and differentiation, which may propose a potential strategy on the simultaneous scaffold fixation and bone regeneration promotion for the tissue engineering fields.Keywords:bioactive hydrogels;adhesive;osteogenesis;tetra-PEG;bioactive glass
研究领域:
生物材料学
·
组织工程学
✓ 已验证
DOI
PubMed
高影响因子
MACROMOLECULAR RAPID COMMUNICATIONS
·
2017
·Vol. 38
·期 4
·1600551
·
IF 4.265
Shi-Lei Dong,Lu Han,Cai-Xia Du,Xiao-Yu Wang,Lu-Hai Li,Yen Wei
Electroactive hydrogel scaffolds are fabricated by the 3D-printing technique using composites of 30% Pluronic F127 and aniline tetramer-grafted-polyethylenimine (AT-PEI) copolymers with various contents from 2.5% to 10%. The synthesized AT-PEI copolymers can self-assemble into nanoparticles with the diameter of ≈50 nm and display excellent electroactivity due to AT conjugation. The copolymers are then homogeneously distributed into 30% Pluronic F127 solution by virtue of the thermosensitivity of F127, denoted as F/AT-PEI composites. Macroscopic photographs of latticed scaffolds elucidate their excellent printability of F/AT-PEI hydrogels for the 3D-printing technique. The conductivities of the printed F/AT-PEI scaffolds are all higher than 2.0 × 10 −3 S cm −1 , which are significantly improved compared with that of F127 scaffold with only 0.94 × 10 −3 S cm −1 . Thus, the F/AT-PEI scaffolds can be considered as candidates for application in electrical stimulation of tissue regeneration such as repair of muscle and cardiac nerve tissue.
研究领域:
生物材料
·
组织工程
·
再生医学
·
高分子化学
·
生物医学工程
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 27
·14555-14567
·
IF 14.511
Xiaoliang Zou,Xuechuan Wang,Mengmeng Gou,Ouyang Yue,Zhongxue Bai,Huijie Zhang,Xinhua Liu
Bio-based adhesive electroactive hydrogels as electronics are of significant research interest in health monitoring systems, wearable devices and smart home systems. Herein, a series of ultra-strong adhesive, self-healable and electroactive nanocomposite hydrogels (CAM-Gels) driven by integrated molecular-chain entanglements, hydrogen bonds, chelation and electrostatic interactions was nano-engineered by compounding biomass gelatin (Gel) and chitosan (CS), acrylamide (AM), multi-walled carbon nanotubes (MWCNTs) and FeCl3 though a simple one-pot method as a conductive adhesive layer for the bio-fabrication of a brand new sandwich-inspired leather-based smart electronic sensing floor (e-floor). Comprehensive experiments showed that the integration of abundant active groups and cohesion among the constituents endowed CAM-Gels with desired adhesive ability towards various substrates. Exhilaratingly, CAM-Gels exhibited ultra-strong adhesive strength on natural hydrogenoid skin, superior to that of currently reported polyurethane adhesives, bio-based adhesives and mussel-inspired adhesives. Owing to the dynamic reversible physical crosslinking, CAM-Gels showed on-demand self-healing ability. Moreover, CAM-Gels presented the accurate real-time monitoring of comprehensive large- and small-scale human activities, demonstrating its significant potential for sensor electronics. Furthermore, the proposed leather-based e-floor exhibited a repeatable and regular electrical signal as expected, substantiating that the e-floor can be used for accurately tracking people's daily activities. The e-floor breaks new ground for leather-based electronics, which will have potential applications in smart homes.
研究领域:
材料科学
·
生物医学工程
·
智能系统
✓ 已验证
产品关联
DOI
高影响因子
CARBON
·
2024
·
IF 10.5
Chong Peng,Xinyi Huang,Mingwei Zhao,Siyong Li,Shuling Liao,Siyu Yu
Hydrogel electrolytes are attractive for fabricating flexible supercapacitors (FSCs) due to their relatively high ionic conductivity, adjustable mechanical properties, and easy preparation processes. However, they still face challenges such as a narrow operational temperature range due to the presence of abundant free water molecules, and comparatively less favorable electrochemical properties compared to liquid electrolytes. In this study, a redox-active hydrogel electrolyte was synthesized, consisting of polyvinyl alcohol-H 2 SO 4 , TiO 2 nanoparticles, carbon nanofibers and a mixture of redox-active species (FeBr 3 , Fe 2 (SO 4 ) 3 and KBr). The addition of thermally stable TiO 2 and carbon nanofibers not only increased the thermal stability but also enhanced the ionic conductivity of the hydrogel. The Faradaic reactions of redox-active species during the charging/discharging processes contributed to improved electrochemical performance. Subsequently, binder-free carbon nanofiber@carbon cloth electrodes were prepared by directly growing carbon nanofibers on carbon cloth. By combining the electrodes with the redox-active hydrogel electrolyte, a redox electrolyte-enhanced FSC was assembled. It exhibited a capacitance of 182.8 mF cm −2 at 3.5 mA cm −2 , an energy density of 8.3 Wh kg −1 , and a capacitance retention of 84.3 % after 5000 charging/discharging cycles. The device was capable of operating under various temperature conditions (0–60 °C) and bending angles (0–180°). Overall, this work provides a novel but facile approach for fabricating FSCs with high electrochemical performance and versatile applications in different environments.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
Energy Storage Materials
·
2023
·
IF 20.4
Lu Wei,Yu Chen,Ziliang Huang,Sheng Zheng,Xin Guo
Aqueous zinc-ion energy storage devices with high safety standards attract extensive interests. Among them, aqueous zinc-ion hybrid capacitors (ZICs) feature the merits of low cost, high power and long cycle life. However, the low operating voltages of aqueous electrolytes, and capacity mismatch between the capacitive cathode and the zinc metal anode, result in limited energy outputs of ZICs. Herein, synergic effects between polymer molecular crowding agent [poly(ethylene glycol)] and redox active ions (3Br ‒ /Br 3 ‒ ) are utilized to construct high voltage active aqueous electrolytes with low salt concentration (1.5 m). The molecular interaction mechanism for the proposed active aqueous electrolyte system is investigated by using a variety of experimental and theoretical simulation techniques. The aqueous electrolyte presents a wide electrochemical stability window (3.32 V) through confining water molecules in polymer chains, and meanwhile introduces extra faradaic contributions at activated carbon cathode. The assembled ZIC delivers an energy density up to 353 Wh kg −1 , which is comparable to that of aqueous zinc-ion batteries. Owing to the physical adsorption (van der Waals force) of oxidized Br 3 ‒ on the surface of activated carbon, retarded self-discharge (with an energy retention efficiency of 73.8% after 10 h) is achieved for the ZIC. This work offers a feasible strategy for exploring ZICs and other aqueous hybrid supercapacitors with boosted energy density, concurrently maintaining reasonable rate capability and cycling stability.
研究领域:
能源材料
·
电化学
✓ 已验证
DOI
高影响因子
Collagen and Leather
·
2024
·Vol. 6
·期 1
·1-14
·
IF 0
Wang Lili,Zhang Shanshan,Yang Fan,Chen Xian,He Huixia,Liu Zaiman,Xiao Jianxi
The reconstruction of critical-size calvarial defects remains a fundamental challenge. Recombinant collagen has gained significant attention in bone tissue engineering owing to its remarkable bioactivity and non-immunogenicity. Herein, we have for the first time developed a bioactive poly(ethylene glycol)-chondroitin sulfate-triple helical recombinant collagen (PEG-ChS-THRC) hydrogel for enhanced bone regeneration in cranial defects. A simple and mild crosslinking reaction of two-arm polyethylene glycol active ester (NHS-PEG-NHS), adipic dihydrazide modified chondroitin sulfate (ChS-ADH) and triple helical recombinant collagen (THRC) leads to the formation of the PEG-ChS-THRC hydrogel. The hydrogel demonstrates interconnected porous structures, enhanced mechanical strength, diminished swelling ratios and adjustable biodegradability. It possesses exceptional biocompatibility and bioactivity, significantly facilitating cell proliferation, adhesion, migration, and osteogenic differentiation of BMSCs. Micro-computed tomography (micro-CT), magnetic resonance imaging (MRI) and histological characterization of rat models with critical-size cranial defects have consistently demonstrated that the PEG-ChS-THRC hydrogel significantly promotes bone tissues regeneration. The innovative bioactive scaffold provides a remarkably improved remedy for critical-size cranial defects, holding greatly promising applications in the fields of bone tissue regeneration. Graphical Abstract
研究领域:
生物材料
·
组织工程
·
再生医学
✓ 已验证
DOI
危险品化学品经营许可证（带存储）