FOOD CHEMISTRY
·
2025
·
IF 9.8
Xiaojuan Xin,Lin Yu,Yonggang Tu,Yan Zhao
This study investigated ethanol-induced gelation mechanisms of egg yolk and its fractions (plasma and granules). The hardness of all samples increased with ethanol treatment time, with granules exhibiting significantly higher hardness than yolk and plasma. Free sulfhydryl content in yolk and plasma initially increased then decreased, whereas continuously declining in granules. Microstructural analysis revealed that ethanol disrupted plasma and granule structures, releasing their components that subsequently aggregated. The yolk formed compact gel network primarily stabilized by hydrogen bonds and hydrophobic interactions from plasma proteins, while granules contributed to higher hardness predominantly via disulfide bonds. FTIR spectra revealed β -sheet formation in yolk/plasma and increased random coils in granules. In conclusion, the synergistic gelation mechanism of yolk that plasma provided matrix formation via hydrophobic aggregation, while granules enhanced hardness through disulfide cross-linking. This study elucidated the distinct roles of yolk fractions in ethanol-induced gelation, providing insights for optimized ethanol-processed egg products.
研究领域:
食品科学
·
生物化学
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产品关联
DOI
PubMed
高影响因子
HIGH PERFORMANCE POLYMERS
·
2021
·
IF 2.161
Zheng Xiao,Haitao Xu,Wenyue Liang,Binfang Wu,Yufeng Shi,Haidong Deng,Yubin Lan,Yongbing Long
A simple yet effective method based on methanol treatment is proposed to enhance the external quantum efficiency (EQE) of the photomultiplication type organic photodetector with a structure of Glass/ITO/PEDOT:PSS/P3H:PC71BM (100:1, wt./wt.)/Al. By modifying the PEDOT:PSS film surface with methanol, the EQE of photodetector significantly improved within a broad wavelength range of 300–700 nm. The maximum EQE of 25300% occurs at the wavelength of 350 nm in the methanol-treated device under −9 V bias, which more than doubles that (11500%) of the device without treatment. In addition, as a result of the methanol treatment, the detectivity of the device improved from 3.72 × 1012 to 7.24 × 1012 Jones at −9 V under 350 nm light illumination. The large improvement is attributed to the fact that the methanol treatment can improve the electrical performance of the PEDOT:PSS by removing the insulator PSS within the film and also result in PC71BM aggregations in the active layer. The latter can enhance the tunneling hole injection by the intensified energy-level bending, which is induced by both the trapped electrons in these aggregations and accumulated ones near Al electrode. As a result, the modification of both the PEDOT:PSS layer and the active layer increases the response current, resulting in the EQE improvement.
研究领域:
材料科学
·
光学工程
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Mingzhao Liang,Zhaohong He,Lisheng Deng,Jun Li,Xianglong Luo,Hongyu Huang
MCM-41, a mesoporous material with a high surface area and tunable pore size, shows great potential for water vapor adsorption. However, due to its large pore size, the effective adsorption capacity at medium to low relative partial pressures is limited in adsorption chiller applications. In this work, MCM-41 was successfully synthesized at room temperature using cetyltrimethylammonium bromide (CTAB) as a templating agent. Pore size modulation was achieved by treating the MCM-41 gel with ethanol. The results indicated that ethanol likely exerted an inward force on the pore channels, reducing the pore size from 3.418 to 2.583 nm. The water vapor adsorption properties and hydrothermal stability of the ethanol-treated samples were significantly enhanced. Additionally, a dual-atmosphere calcination process at 450 °C was established, showing results comparable to the conventional 550 °C process in terms of template removal. The sample, which combined dual-atmosphere calcination with ethanol treatment, demonstrated a significant increase in the water vapor adsorption capacity, achieving a 1.3-fold improvement compared to the untreated sample. These results provide a feasible reference for the application of MCM-41 in adsorption chillers.
研究领域:
材料科学
·
化学工程
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产品关联
DOI
PubMed
高影响因子
Forests
·
2022
·Vol. 13
·期 8
·1204
·
IF 3.282
Yuhan Liu,Jiangtao Shi,Weiqi Leng,Qiongtao Huang
Wood permeability and compressibility are affected by cell wall structure and chemical composition. These properties can be improved by appropriate wood pretreatments. Low-density poplar wood was converted to a more dense structure by the following steps: First, lignin and hemicellulose were removed using a mixture of NaOH and Na2SO3. Second they were impregnated with polyethylene glycol (PEG, mean molecular weight of 1200), nano-SiO2,and a silane coupling agent at atmospheric temperature and pressure. Finally, impregnated wood was compressed at 150 °C. Results showed that the tracheid lumens on the transverse section of the compressed wood almost vanished. Specifically, the lumens in the wood cells, especially those that were compressed, were almost completely filled with PEG. In FTIR, the asymmetric absorption peaks of Si–O–Si at 1078–1076 cm−1were clearly observed, which confirms the existence of bonding between nano-SiO2and wood. The highest melting enthalpy and crystallization enthalpy showed a heat storage capacity of modified wood, which were 20.7 and 9.8 J/g, respectively. Such phase change capabilities may have potential applications in regulating the rate of change of room temperature. In summary, the modified wood could be utilized as material for construction to conserve energy.Keywords:fast-growing poplar wood;wood modification;densified wood;PEG-treated wood
研究领域:
材料科学
·
林业工程
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产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Chunpeng Yang,Junyi Wang,Xichang Bao,Jun Gao,Zhiwen Liu,Renqiang Yang
Organometal halide perovskite (CH 3 NH 3 PbI 3 ) solar cells with excellent photovoltaic performance have obtained great attention. In this work, conductive atomic force microscopy is used to investigate the conduction mechanism of perovskite film, and the results clearly show that grain boundaries are beneficial to the charge transport in perovskite solar cells. However, there are large gaps between grains in some as-prepared perovskite films, and the related grain boundaries or grains have poor charge transport capability, which leads to undesirable photovoltaic performance. After iso-propyl alcohol treatment, the charge transport capabilities of both grain boundaries and grains are improved. The power conversion efficiency of related device using PEDOT:PSS as hole transport material is increased from 13.72% to 15.65% with concurrently improved open circuit voltage, short circuit current density and fill factor. This research addresses that grain boundaries are quite important and proper post modification is an effective way to improve the efficiency of planar perovskite solar cells.
研究领域:
材料科学
·
光伏技术
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产品关联
DOI
高影响因子
International Journal of Environmental Research
·
2024
·Vol. 18
·期 4
·1-15
·
IF 2.6
Ye Yuanyao,Yan Xueyi,Li Xi,Huang Shijing,Jiang Wei,Liu Dongqi,Ren Yongzheng,Cheng Dongle
Fluoride is an essential element for humans, but its excessive intake can cause harm to health. Adsorption is recommended as one of the most widely applied, affordable and convenient defluorination technologies. In the present study, Mn–Zr–Ethanol (Mn–Zr–Et) composite was prepared by sol–gel method with ethanol used as a solvent and then utilized for the fluoride removal. The removal performance of fluoride by the Mn–Zr–Et adsorbent was investigated through batch experiments. The removal mechanism of fluorine was further studied through analyzing the characteristics of the Mn–Zr–Et adsorbent. Results show that the integration of ethanol with Mn–Zr adsorbent could greatly enhance the removal capacity of fluoride when compared to the Mn–Zr adsorbent, where the adsorption capacity of Mn–Zr–Et adsorbent was 32.87 mg g −1 at the initial fluoride concentration of 50 mg L −1 . The Mn–Zr–Et adsorbent had the advantages of fast adsorption rate, wide pH adaptation range and resistance to interference of coexisting anions. To sum up, the Mn–Zr–Et composite is a promising and green adsorbent for the highly efficient removal of fluoride. Graphical Abstract
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
ACS Biomaterials Science & Engineering
·
2020
·
IF 4.152
Sheng Xu,Qingtao Li,Haotian Pan,Qiyuan Dai,Qi Feng,Chenxi Yu,Xiaohua Zhang,Zhibin Liang,Hua Dong,Xiaodong Cao
In recent years, biomimetic tubular scaffolds have been widely used to repair various human tissue defects, due to their hollow structure similar to the native tissues such as blood vessel, trachea, ureter, and bone marrow cavity. However, there are still many challenges in manufacturing a tubular hydrogel scaffold with suitable mechanical properties, specific microstructure, and good biocompatibility. In this study, we exploited an enzymatic cross-linking method using horseradish peroxidase (HRP) as an enzyme and hydrogen peroxide (H2O2) as a substrate, and combining with gelatin’s thermal sensitivity to produce an enzymatically cross-linked silk fibroin/gelatin-tyramine (E-SF/GT) tubular hydrogel. Through further treatment with methanol, we fabricated an EM-SF/GT tubular hydrogel with fine-wall architecture that consists of two different layers (inner and outer, dense and porous). Mechanical measurement showed that the compressive moduli values were up to 4.82 MPa and the tensile moduli values were up to 4.79 kPa under the static loading conditions. Also, degradation test showed that the hydrogel’s degradation time was prolonged. Finally, the bioactivity was tested by seeding mouse bone marrow mesenchymal stem cells (mBMSCs) in the lumen of a small-diameter (2 mm) EM-SF/GT tubular hydrogel. Cell morphology and immunofluorescence test indicated that mBMSCs differentiated into endothelial cells and lined the inner surface of the tubular hydrogel under induction. This work provided a feasible strategy for developing tubular hydrogels, which could be potentially used as scaffolds for hollow multilayer tissue engineering, such as blood vessels.
研究领域:
生物材料学
·
组织工程学
·
再生医学
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产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2022
·Vol. 10
·期 13
·5321-5327
·
IF 8.067
Wenjing Zhai,Lin Huang,Xiaomin Cui,Guangyuan Li,Zhihang Zhang,Peizhuo Chen,Yongqiang Li,Yuxia Tang,Lin Lin,Zhibo Yan,Jun-Ming Liu
Lead-free halide perovskites have great potential as stable and nontoxic optoelectronic materials. As a promising photovoltaic candidate, AgBiI4 has attracted attention due to its eco-friendly properties and strong stability, but the energy conversion efficiency (PCE) is still low and more effort towards improving the film quality is needed for photovoltaic applications. Here, we synthesized AgBiI4 films by antisolvent treatments with chlorobenzene (CB), toluene (TL), and isopropanol (IPA), respectively, and the corresponding solar cells of ITO/SnO2/AgBiI4/PTAA/Au were fabricated. Our data indicate that the IPA-treated AgBiI4 film has better microstructural quality and higher photovoltaic performance than the other-treated films. Furthermore, the PCE of the cells is enhanced from 0.82% to 1.61% upon IPA-treatment. This study suggests that besides a suitable relative polarity, an antisolvent with a lower boiling point and a higher miscibility with the host solvent is preferred in improving the AgBiI4 film quality and enhancing the photovoltaic performance of AgBiI4-based solar cells.
研究领域:
材料科学
·
能源科学
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DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2019
·
IF 2.961
Yan Hua,Daocheng Hong,Sushu Wan,Yanyu Lei,Mingcai Xie,Weiqing Yang,Yu Du,Yuxi Tian
2D perovskite materials have attracted increasing attention in the last few years due to their optical tunability. However, how to control the structure of these materials is still one of the key challenges. In this work, by using photoluminescence microscopy and XRD characterization, we found that ethanol treatment can induce the reorganization of the crystal structure of 2D perovskite materials. The ethanol molecules can insert into (OA) 2 (MA)Pb 2 I 7 (OA = CH 3 (CH 2 ) 7 NH 3 ; MA = CH 3 NH 3 ) crystal lattice and preferentially dissolve MA ions reducing the MA/OA ratio. During the recrystallization, new (OA) 2 PbI 4 phase forms due to the low MA/OA ratio. On the other hand, adsorption of ethanol can induce the photoluminescence (PL) enhancement by passivation of the surface defects . Consequently, PL intensity increases and decreases as the activation/deactivation of the quenching defects. These results provide a possible way to optimize the crystal structure of 2D perovskite under mild condition.
研究领域:
材料科学
·
光学
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Yao Zhu,Huan Yi,Qiaoyan Hao,Jidong Liu,Yuxuan Ke,Zhuo Wang,Dianyuan Fan,Wen jing Zhang
Monolayer WS 2 (1L-WS 2 ) possesses direct band gap, which is beneficial for light emitting applications. However, high quality sample obtained via mechanical exfoliation suffers from ultralow yield of large flakes while large 2D material monolayers synthesized by chemical vapour deposition (CVD) unintentionally induce many defects, resulting in low photoluminescence (PL) intensity. Herein, we firstly control the 1L-WS 2 scalable growth through H 2 introduction at the beginning of the CVD synthesis. Its domain size can be increased from 1 μm up to 20 μm with higher coverage, compared to that synthesized without H 2 introduction. Then, we propose scalable ways to anneal the obtained large 1L-WS 2 in Ar diluted hydrogen sulfide (H 2 S) atmosphere at 750 °C or to treat it with (3-mercaptopropyl) trimethoxysilane (MPS). Its PL intensity can be increased to 12 times by H 2 S or more interestingly to 30 times by MPS, respectively. Our systematic analyses show that the drastic PL improvements are mainly attributed to the reduction of structural defects by H 2 S and MPS, which is facilitated via the H– bond in them. The results help to explore routes to obtaining large-size single crystalline transition metal dichalcogenides monolayer (1L-TMDCs) and intense PL emission.
研究领域:
材料科学
·
纳米科技
·
凝聚态物理
·
表面科学
·
半导体材料
✓ 已验证
DOI
高影响因子
LANGMUIR
·
2020
·
IF 3.557
Lin Wang,Feiyu Wang,Bo Xu,Man Zhou,Yuanyuan Yu,Ping Wang,Qiang Wang
Pure silk fibroin (SF) hydrogel exhibits poor elasticity and low water retention ability, owing to the compact crystalline structure and high content of hydrophobic amino acids. Herein, a composite double-network hydrogel of SF and tyramine-modified hyaluronic acid (mHA) was constructed, via the laccase-catalyzed coupling reactions between the phenolic hydroxyl groups from SF and mHA chains. The obtained hydrogel exhibits improved structural stability and flexibility compared to pure SF hydrogel. Meanwhile, the swelling ratio, mechanical property, drug loading, and release behaviors can be readily regulated by alcoholization, altering pH value, and ionic strength of soaking solutions. Increasing pH values promoted the swelling capacity of SF/mHA hydrogel, resulting in an efficient loading of cationic drugs and sustained release of anionic drugs as well. The addition of inorganic salts reduced electrostatic repulsion in the hydrogel scaffold, accompanying with a noticeable improvement of toughness. Furthermore, alcohol treatment induced conformation changes of fibroin protein, and the composite hydrogel achieved a higher fracture and improved elasticity. The present work provides a biological alternative to regulate the mechanical behavior, drug loading, and sustained release capacity of the SF-based hydrogel.
研究领域:
材料科学
·
生物医学工程
·
化学工程
·
药剂学
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产品关联
DOI
PubMed
高影响因子
ACS Applied Bio Materials
·
2019
·
IF 0
Nier Wu,Huilei Yu,Muyang Sun,Zong Li,Fengyuan Zhao,Yingfang Ao,Haifeng Chen
Silk fibroin (SF) is a natural polymer with low immunogenicity and good biocompatibility. However, most silk-based hydrogels formed through chemical or physical cross-linking are brittle, the preparation of which also inevitably introduces cytotoxic cross-linking agents. Herein, a simple strategy is presented for synthesizing SF hydrogels with tunable mechanical properties by combining γ-ray radiation with ethanol treatment. Neither toxic initiators nor chemical agents are utilized during the whole preparation procedure. For “soft” hydrogels, the compressive moduli are less than 29 kPa (SF-S hydrogels), while for “tough” hydrogels, the compressive moduli are between 1.21 and 2.41 MPa (SF-D hydrogels). Specifically, γ-ray radiation makes SF form uniform and stable chemical cross-linking sites within and between molecular chains, resulting in “soft” and highly elastic SF hydrogels. The physical cross-linking via ethanol treatment leads to the self-assembly of fibroin chains, transforming those soft hydrogels to tough hydrogels. These double cross-linked SF hydrogels (SF-D hydrogels) exhibit excellent mechanical strength. Effects of various cross-linking conditions on the secondary structure, pore structure, mechanical properties, gelation degree, swelling, and in vitro degradation properties are explored. A series of cell experiments demonstrate that the SF hydrogels with different mechanical strength can stimulate the expression of specific genes of rat bone marrow mesenchymal stem cells (BMSCs) in various differentiation directions. These results also show the application prospects in tissue engineering by customizing hydrogels for the mechanical strength of different tissues.
研究领域:
材料科学
·
生物材料
·
生物医学工程
·
组织工程
✓ 已验证
产品关联
DOI
PubMed
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