Scientific Reports
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2024
·Vol. 14
·期 1
·1-11
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IF 3.8
Yang Jianlin,Yang Xin,Yu Tianlu,Wang Zhecun
Liquid separation methods are widely used in industrial and everyday applications, however, their applicability is often constrained by low efficiency, membrane fouling, and poor energy efficiency. Herein, a conceptually novel liquid-infused interfacial floatable porous membrane (LIIFPM) system for high-performance oil/water separation is proposed. The system functions by allowing a liquid to wet and fill a superamphiphilic porous membrane, thereby creating a stable liquid-infused interface that floats at the oil/water interface and prevents the passage of immiscible liquids. The lower-layer liquid can outflow directly, while the flow of the upper-layer liquid is stopped by the membrane. Remarkably, the efficiency of the LIIFPM system is independent of the membrane pore size, enabling ultrafast immiscible oil/water separation in an energy-saving and antifouling manner.
研究领域:
材料科学
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环境工程
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DOI
PubMed
高影响因子
Science Bulletin
·
2024
·
IF 18.8
Wei Lv,Zilei Shen,Junlin Liu,Xudong Li,Fang Ding,Dongyue Zhang,Licheng Miao,Xuefeng Lyu,Ruijie Li,Miaomiao Wang,Yiming Li,Jingwen Meng,Chao Xu
In this study, we successfully synthesized a δ-MnO 2 cathode with O vacancies, encapsulated by C derived from pyromellitic acid, using a facile hydrothermal method followed by annealing in an Ar atmosphere. The cathode’s structural stability and charge transfer kinetics are enhanced by inhibiting the formation of the by-product Zn 4 SO 4 (OH) 6 ·4H 2 O, regulating the Mn valence state, and suppressing the Jahn–Teller effect through the synergy of C encapsulation and O vacancies. This results in remarkable electrochemical performance, including a large capacity of 421.2 mAh g −1 at 0.1 A g −1 , a high specific energy density of 595.53 Wh kg −1 , and exceptional long-cycle life stability with 90.88% over 4000 cycles at 10 A g −1 , together with superior coulombic efficiency (∼100%) in pure ZnSO 4 electrolyte. Moreover, the cathode materials demonstrate specific antitumor efficacy. In brief, this work introduces an in situ synthetic C encapsulated δ-MnO 2 with O vacancies expected to be applied in both large-scale energy storage and biomedicine.
研究领域:
材料科学
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生物医学工程
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DOI
PubMed
高影响因子
MATERIALS & DESIGN
·
2016
·
IF 3.997
Qiuyan Li,Guo He
Porous titanium with entangled wire structure was enhanced by filling gelatin into the porous structure to form a titanium-gelatin (Ti-G) composite. The density of the composites was 1.6–2.5 g/cm 3 , similar to that of bone. The strength and elastic modulus of the composites reached 12.9–39.4 MPa and 2.5–7.4 GPa, respectively, which were comparable to that of the cortical bone. Gelatin in Ti-G composite acted as the carrier of gentamicin sulphate (GS). Antibacterial efficacy of GS-loaded Ti-G against Staphylococcus aureus strain was tested. The lack of growth of Staphylococcus aureus strains was found in Luria–Bertani (LB) medium containing GS-loaded Ti-G. GS release behavior from the GS-loaded Ti-G composites in phosphate buffer saline (PBS) was investigated. The effective GS release times from Ti30-G and Ti50-G were 120 h and 168 h, respectively. The gelatin in Ti-G was just degraded 3.2% at the immersion time of 168 h and 9.0% at 336 h. The degradation rate of gelatin was much slower than release rate of GS, indicated that the GS release from gelatin was less affected by the gelatin degradation. These Ti-G composites loaded with drug(s) are expected to be good candidates as functional bone repair materials with drug-delivery capabilities.
研究领域:
生物材料学
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医学工程
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药剂学
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Zheng Lu,Dashuai Sun,Sida Shen,Zeyu Lyu,Luhui Zhou,Pengcheng Luo,Shuai Wei,Hongpeng You
The pursuit of high-quality phosphors exhibiting swift response to near-ultraviolet (n-UV) excitation, elevated quantum efficiency (QE), superior thermal stability, and impeccable light quality has been a focal point of investigation. In this research, we synthesized a novel K2La2B2O7:Ce3+,Tb3+ (KLBO:Ce3+,Tb3+) color-tunable phosphor that meets these requirements. KLBO:Ce3+ can be stimulated efficiently by the n-UV light and shows an intense blue emission centered at 437 nm. Notably, KLBO:0.04Ce3+ exhibits exceptional internal QE (IQE = 94%) and outstanding thermal stability (I423 K/I303 K = 88%). Optimization of doping compositions enables efficient Ce3+ → Tb3+ energy transfer, resulting in substantial enhancements in QE and thermal stability. Specifically, KLBO:0.04Ce3+,0.28Tb3+ achieves an IQE of 98% and a thermal stability of 97%, higher than those of most phosphors of the same type. White light-emitting diodes fabricated using phosphor samples emit warm white light characterized by high Ra (Ra = 96.6 and 93.4) and low CCT (CCT = 4886 and 4400 K). This study underscores the feasibility of enhancing phosphor QE and thermal stability through energy transfer mechanisms.
研究领域:
材料科学
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光学工程
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Chengli Liu,Yuman Li,Wei Li,Youzhun Fan,Wuyi Zhou,Cairong Xiao,Peng Yu,Yueyao Liu,Xiangqian Liu,Zhiguang Huang,Xuebin Yang,Chengyun Ning,Zhengao Wang
Chronic diabetic wounds present formidable challenges, marked by uncontrolled bacterial infections, prolonged inflammation, and impaired angiogenesis. The evolving landscape of photo-responsive antibacterial therapy holds great promise in addressing these multifaceted issues, with a particular focus on leveraging the distinctive properties of 2D heterojunction materials. In this investigation, we engineered composite sprayed hydrogels, seamlessly integrating Bi/MoS 2 nano-heterojunctions. Capitalizing on the synergistic interplay between photocatalytic antibacterial and photothermal antibacterial mechanisms, the Bi/MoS 2 heterojunction, guided by its localized surface plasmon resonance, demonstrated outstanding antibacterial efficacy within a mere 10-minute exposure to 808 nm near-infrared light. This accelerated sterilization both in vitro and in vivo , consequently expediting wound healing. The sprayed composite gel not only furnishes protective shielding for skin tissues but also fosters endothelial cell proliferation, vascularization, and angiogenesis. This safe and ultrafast sterilizing hydrogel presents immense potential for application in antimicrobial dressings, thereby offering a promising avenue for diabetic wound healing.
研究领域:
生物材料学
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医学工程
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伤口愈合研究
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DOI
PubMed
高影响因子
MOLECULES
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2022
·Vol. 27
·期 20
·6951
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IF 4.927
Yujie Tao,Fang Zhou,Kaixin Wang,Dequan Yang,Edward Sacher
Although a facile route to prepare AgCu nanoalloys (NAs) with enhanced antibacterial efficacy using Ag NP catalysis of Cu ions at elevated temperatures was previously developed, its detailed reaction process is still unclear due to the fast reaction process at higher temperatures. This work found that AgCu NAs can also be synthesized by the same process but at room temperature. AgCu NAs formation kinetics have been studied using UV–Visible spectra and Transmission Electron Microscopy (TEM), where formation includes Cu2+deposition onto the Ag NP surface and Ag+release, reduction, and agglomeration to form new Ag NPs; this is followed by a redistribution of the NA components and coalescence to form larger AgCu NPs. It is found that SPR absorption is linear with time early in the reaction, as expected for both pseudo-first-order (PFO) and pseudo-second-order (PSO) kinetics; neither model is followed subsequently due to contributions from newly formed Ag NPs and AgCu NAs. The antibacterial efficacy of the AgCu NAs thus formed was estimated, with a continuous increase over the whole alloying process, demonstrating the correlation of antibacterial efficacy with the extent of AgCu NA formation and Ag+release.Keywords:Ag nanoparticles;AgCu nanoalloys;antibacterial efficacies;reaction kinetics
研究领域:
材料科学
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微生物学
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DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
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2019
·Vol. 43
·期 46
·18345-18354
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IF 3.069
Gaozhi Bai,Yu Han,Panpeng Du,Zhaoyang Fei,Xian Chen,Zhuxiu Zhang,Jihai Tang,Mifen Cui,Qing Liu,Xu Qiao
A highly efficient solid-amine adsorbent with excellent CO2 capacity from flue gas was successfully prepared using polyethyleneimine (PEI)-impregnated resin HPD450 in this study. The adsorbents were characterized by scanning electron microscopy (SEM), Fourier transforms infrared spectroscopy (FTIR), N2 adsorption–desorption, thermogravimetric analysis (TGA) techniques and elemental analysis (EA). The CO2 adsorption behaviors of the adsorbent were studied for their adsorption capacity, kinetics, thermodynamics and stability. The optimal adsorbent (HPD450/PEI-50) exhibited an excellent adsorption capacity of 4.44 mmol g−1 for pure CO2 and 3.62 mmol g−1 for 15 vol% CO2. Moreover, HPD450/PEI-50 retained an average capacity of 3.58 mmol g−1 under flue gas for 90 consecutive adsorption cycles. The adsorption/desorption process of CO2 on HPD450/PEI-50 was investigated using in situ FTIR. The capture of carbon dioxide in the simulated flue gas stream also demonstrated that moisture had a promoting effect on CO2 adsorption. This design of the high-performance HPD450/PEI-50 with a fantastic CO2 capacity could provide an up-and-coming candidate for CO2 capture from flue gas.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
FIBERS AND POLYMERS
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2022
·Vol. 23
·期 5
·1309-1317
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IF 2.347
Liu Wenya,Sun Di,Ma Haodong,Chen Zhenming,Gui Chengmei,Huang Junjun
Silver-printed terylene is presented to fabricate anti-electromagnetic radiation Maternity Dress (AMD) with superior shielding effectiveness, but the use of noble metal as electromagnetic interference shielding materials enhances cost of raw material and restricts its application. In this study, a facile process combined with electroless deposition and hydrophobic treatment to fabricate self-cleaning radiation protection cotton for AMD was established. The active groups on the plant fiber surface could absorb Sn 2+ and Pd 2+ through coordination effect, acting as catalytic center, which can catalyze the reduction of Ni 2+ in the plating solution. Ni particle deposited on the its surface with deposited amount of 32 %. The fabricated material exhibited an shielding effectiveness of 52.5 dB and it meet AMD criteria. Owing to the cooperation of the low surface energy and rough structure of precipitation, the Ni-plated cotton modified with (3-Mercaptopropyl) trimethoxysilane exhibited remarkable hydrophobicity with water contact angle up to 112.8° and excellent self-cleaning property.
研究领域:
材料科学
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纺织工程
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DOI
高影响因子
INORGANIC CHEMISTRY
·
2018
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IF 4.7
Chunyan Jiang,Mingying Peng,Alok M. Srivastava,Lihua Li,Mikhail G. Brik
Narrow band red-emitting Mn4+-doped fluoride phosphor is an essential red component of modern white-light-emitting-diode (WLED) devices. Its luminescence has sensitivity to structure and influences the performance of WLED. In this paper, we report a high-performance Mn4+ phosphor based on a new heterodialkaline fluorogermanate, CsNaGeF6:Mn4+. As determined by the single-crystal X-ray diffraction analysis, the CsNaGeF6 compound crystallizes in the orthorhombic crystal system with space group Pbcm (No. 57). Under excitation by 360 and 470 nm photons, CsNaGeF6:Mn4+ emits intense red light near 630 nm with a high quantum yield of 95.6%. The electronic energy levels of the Mn4+ ion in Cs2GeF6, Na2GeF6, and CsNaGeF6 are calculated using the exchange charge model of crystal-field theory. The local Mn4+ environment inducing different zero-phonon-line emissions in the structures is probed by electron paramagnetic resonance. The Mn4+-doped heterodialkaline fluorogermanate CsNaGeF6:Mn4+ exhibits broader emission as a result of the lowest symmetry. It has higher quantum yield than Na2GeF6:Mn4+ and higher spectral luminous efficacy than Cs2GeF6:Mn4+. Given the good thermal stability and efficient luminescence, a prototype warm-WLED device with a color rendering index of 92.5, a correlated color temperature of 3783 K, and a luminous efficacy of 176.3 lm/W has been fabricated by employing the CsNaGeF6:Mn4+ phosphor as the red component. Our results not only reveal that a high-performance Mn4+ red phosphor is achieved through cationic substitutions but also construct a relationship of performance–structure to guide the design of Mn4+ phosphors in the future.
研究领域:
材料科学
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光学工程
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产品关联
DOI
PubMed
高影响因子
BIOMACROMOLECULES
·
2023
·
IF 6.2
Shiying Lang,Yangrui Du,Li Ma,Yangjing Bai,Ying Ji,Gongyan Liu
Hemostatic powders provide an important treatment approach for time-sensitive hemorrhage control. Conventional hemostatic powders are challenged by the lack of tissue adhesiveness, insufficient hemostatic efficacy, limited infection control, and so forth. This study develops a hemostatic powder from tricomponent GTP coacervates consisting of gelatin, tannic acid (TA), and poly(vinyl alcohol) (PVA). The physical cross-linking by TA results in facile preparation, good storage stability, ease of application to wounds, and removal, which provide good potential for clinical translation. When rehydrated, the coacervate powders rapidly form a cohesive layer with interconnected microporous structure, competent flexibility, switchable wet adhesiveness, and antibacterial properties, which facilitate the hemostatic efficacy for treating irregular, noncompressible, or bacteria-infected wounds. Compared to commercial hemostats, GTP treatment results in significantly accelerated hemostasis in a liver puncture model (∼19 s, >30% reduction in the hemostatic time) and in a tail amputation model (∼38 s, >60% reduction in the hemostatic time). In the GTP coacervates, gelatin functioned as the biodegradable scaffold, while PVA introduced the flexible segments to enable shape-adaptability and interfacial interactions. Furthermore, TA contributed to the physical cross-linking, adhesiveness, and antibacterial performance of the coacervates. The study explores the tunability of GTP coacervate powders to enhance their hemostatic and wound healing performances.
研究领域:
生物医学工程
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材料科学
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创伤护理
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产品关联
DOI
PubMed
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
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2023
·
IF 8.7
Yuye Yan,Bin Wu,Gang Qian,Huiya Lan,Md Mofasserul Alam,Ru Xia,Jiasheng Qian
With the advent of the microelectronics era, the electromagnetic radiation and heat accumulation of electronic devices have evolved critical issues to be solved. Herein, polydimethylsiloxane (PDMS) based composites with a continuous carbon fiber (CFs) network structure connected via carbon nanotubes (CNTs) containing cobalt nanoparticles is fabricated via heat treatment and vacuum-assisted impregnation. Beneficial from the all-graphene topological network and stable magnetism, the composite has more than 35 dB EMI shielding effectiveness in the ultra-wideband of 8 ∼ 40 GHz, even reach as high as 75.33 dB in the Ka-band. Meanwhile, the effective thermal conduction pathways formed by CNTs and CFs make the thermal conductivity of the composite reach 1.08 W m −1 K −1 . More significantly, the composite can still maintain high electromagnetic shielding and thermal conductivity after the 1000 bending tests, which verifies the excellent structural stability of the composite. Such a versatile composite has broad application prospects in a precision electronic device.
研究领域:
材料科学
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电子工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2023
·Vol. 58
·期 28
·11666-11679
·
IF 4.5
Wang Yanting,Zhang Xuefei,Lin Jia-Horng,Li Ting-Ting,Lou Ching-Wen,Lin Jiao,Yang Hongying
The rapid development of wireless communication and electronic equipment requires active measures to eliminate electromagnetic radiation hazards. Based on the layered assembly strategy, MXene-based composite fabric with multiple functional layers was prepared by combining two-dimensional transition metal (MXene) with PP substrate by a simple solution dipping method. PP substrate endowed pure MXene film certain mechanical properties, and polydopamine modification on the surface of PP enhanced the bonding fastness between the substrate and MXene layer. The silicon-containing hydrophobic layer imparted hydrophobic properties to the conductive fabric, thus ensuring the stability of the conductivity of the MXene layer when used in complex environments. The results shown that the conductivity and electromagnetic shielding effectiveness (EMI SE) of the composite fabric increased with the increased in impregnation times. When the impregnation times were three, the conductivity and EMI SE of the composite fabric were 6.54 S/cm and 32.57 dB, respectively. After hydrophobic treatment, the contact angle of the composite fabric was 140.49°. In addition, the average EMI SE and shielding efficiency still reached 25.12 dB and 99.69%. The excellent EMI shielding capability coupled with favorable bendability endows MXene-based composite fabric to be an alternative choice in electronics, aerospace and smart wearables.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）