COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Weiyi Zhang,Haozhen Zhang,Xinglian Xu,Xue Zhao
The oil polarity was hypothesized to significantly influence the microscopic conformation of interfacial myofibrillar protein (MP) and thus the mesoscopic interfacial rheology of MP film , which ultimately tuned the macroscopic stability of MP-stabilized emulsions. In this research, the inner mechanism was revealed hierarchically based on emulsions multi-scale properties, by a combination of in vitro interfacial concentration measurement, dynamic interfacial tension measurement and interfacial dilatational rheology (highlighting Lissajous plots). Then, the above conclusion was verified through in silico molecular dynamic simulation. At macroscopic level, the light scattering results showed that emulsion prepared with higher polarity oil exhibited higher physical stability. This could be explained from the mesoscopic perspective that: (1) the adsorption dynamics of MP was faster (though lower diffusion rate, but higher penetration and rearrangement rate) on the higher polarity interface, which decreased interfacial tension more efficiently; (2) adsorption ratio, surface load and desorption ratio indicated that ‘multilayer interfacial film’ was formed by loosely-bound MP on the lower polarity interface, which decreased the effective interfacial coverage to impair emulsions stability; (3) Lissajous plots showed that interfacial structure with higher stability against large deformation was formed on the higher polarity oil interface. Finally, the microscopic molecular mechanism for explaining the above findings was revealed by in silico molecular dynamic simulation: though MP was less unfolded on the higher polarity interface leading to weaker intermolecular hydrophobic interactions, this compact molecular structure with stronger intramolecular rigidity predominantly contributed to steadier interfacial film structure. This multi-scale study provides a deep insight into the inner relationship between oil polarity and emulsions stability.
研究领域:
食品科学
·
胶体与界面化学
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蛋白质构象
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软物质物理
·
分子模拟
✓ 已验证
DOI
高影响因子
Surfaces and Interfaces
·
2024
·
IF 5.7
Jiajun Ma,Zongwei Guo,Shengtao Dai,Yannong Liu,Huiru Hu,Peikun Li,Lin Jin,Yuhui Ao
Inducing highly oriented 2D nanosheets to create a mussel-inspired interface phase on the carbon fiber (CF) surface to enhance its composites’ strength and toughness has become a great challenge. In this study, a novel coating was synthesized to induce the graphene oxide (GO) oriented distributed on the CF surface while constructing a biomimetic "Brick-and-Mortar" structural interface phase, which simultaneously promoted the strength and toughness of CF composites . Acting as a sizing agent, di-pyrene terminated PEG (py-PEG-py) facilitates abundant π-π* stacking interactions, and enables flexible chain segment motion during interface fracture of composites, as well as effectively improving the toughness of composites. Eventually, the formation of a superior mechanism on the CF surface results in remarkable properties for composites, including an interfacial shear strength (IFSS) of 99.3 MPa, interlaminar shear strength of 93.2 MPa, and flexural strength of 1430 MPa. The tensile strength and toughness increased to 1777 MPa and 45.0 MJm −3 , respectively. Simultaneously, the continuous thermal conduction pathway produced by the oriented attachment of GO on the CF surface increased in-plane thermal conductivity . The reinforcing mechanisms of the unique mussel-inspired coating were systematically investigated. This work opens up an effective and scalability avenue for obtaining high-performance CF composites.
研究领域:
材料科学
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复合材料工程
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界面化学
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高分子化学
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纳米材料学
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仿生材料
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力学性能
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热传导
✓ 已验证
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2023
·
IF 5.4
Yang Guo,Xiaoying Guo,Haipeng Lu,Xian Jian
Developing high–efficient microwave absorbing (MA) materials with anti–corrosion (AC) properties to tackle the harsh hygrothermal marine conditions remains a challenge. Herein, we employed catalytic chemical vapor deposition and the Stöber technique to fabricate gradient multilayer interface–coupled FeNi@C@SiO 2 composites, guided by the hetero–interface engineering. The resulting composites exhibited exceptional MA properties and AC behavior. Specifically, they showcased a remarkable effective absorption bandwidth of 6.27 GHz at 1.40 mm, outperforming that of FeNi (3.80 GHz). This improved bandwidth was attributed to the electron conduction pathway provided by the C layer, which facilitated electron migration and hopping. The C@SiO 2 layer, containing defects and –OH functional groups, induced abundant dipole polarization and optimizes the impedance matching of FeNi. Furthermore, the RCS reduction value of FeNi@C@SiO 2 could reach 16.73 dB·m 2 . Moreover, the corrosion rate of FeNi@C@SiO 2 was 7.48 × 10 −11 m/s, significantly lower than that of FeNi (1.29 × 10 −10 m/s). This reduction was primarily due to the intrinsic inertness and impermeability of the C@SiO 2 layer, effectively isolating the corrosive medium from the substrate. This investigation presents a novel point of reference for the advancement of bifunctional MA materials intended to cope with extreme environments.
研究领域:
材料科学
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纳米复合材料
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表面工程
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电磁功能材料
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腐蚀防护
✓ 已验证
DOI
高影响因子
Energy Technology
·
2019
·Vol. 7
·期 4
·1800981
·
IF 3.163
Bangwei Deng,Hao Wang,Xiang Li,Yan Ding,Daming Sun,Jun Ma,Mianzhong Chen,Tao Chen,Feng Gao,Meizhen Qu,Gongchang Peng
Tris(trimethylsilyl)phosphite (TMSPi) has been reported to be an excellent electrolyte additive. However, scarce reports exist on the effect of the charge cutoff potential on the cyclic stability using high-performance LiNi 0.6 Co 0.2 Mn 0.2 O 2 (NCM622)–mesocarbon microbead (MCMB) full cells. Herein, a high-loading and repeatable NCM622–MCMB coin-type full cell is successfully prepared, and the role of TMSPi on such a full cell at charge cutoff potentials of 4.25 and 4.45 V is studied. Theoretical calculations and detailed analyses reveal that it is oxidized in the first charging process due to its unsaturated P—O bonds, thus forming a stable P—O—F-rich cathode electrolyte interphase and preventing severe decomposition of the electrolyte over NCM622 during long-term cycling. In addition, the P—O and Si—O bonds of TMSPi both display HF-scavenging ability. Moreover, TMSPi may react directly with the LiPF 6 -based electrolyte to form some intermediate products that can be reduced on the MCMB electrode, thereby modifying the solid electrolyte interphase and improving the stability of MCMB during lithium intercalation.
研究领域:
电化学
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材料科学
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能源存储
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锂离子电池
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界面化学
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电极材料
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2019
·
IF 7.65
Xingyun Hu,Xianjia Peng,Linghao Kong,Feng Zhu
The most toxic and mobile form of vanadium (V) is V(V). Thus, the oxidation of V is a subject of considerable importance since the process may increase environmental risks of V. V(IV) is known to be stable when pH < 4.5. However, in this study, stable V(IV) was oxidized almost completely in goethite suspension within 60 min at pH 2.0 and pH 4.0, correspondingly, only 25%–30% and 15%–20% of V(IV) were oxidized in equimolar Fe 3+ solution and the blank solution, respectively. The promoted oxidation of V(IV) by FeOOH is attributed to the formation of the complex, VO(OFe<) + or VO(OFe<) 2 . On the one hand, the formation of the complex caused higher pH in the interface of solid FeOOH and corresponding lower conditional potential of V(V)/V(IV) than those in bulk solutions, which facilitates the oxidation of V(IV). On the other hand, the surface group OFe < may serve as a medium that facilitating the electron transfer from V(IV) ions to dissolved oxygen molecules, also favoring the oxidation of V(IV). This study not only deepens our understanding of the transfer, transformation, and risk of V in environments, but also provides a reference to speculate the fate of similar elements in environments.
研究领域:
环境化学
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地球化学
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水污染控制
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金属形态转化
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界面过程
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2020
·Vol. 55
·期 20
·8642-8650
·
IF 3.553
Chen Shaoping,Xu Libin,Li Rong,Fan Wenhao,Chen Yanzuo,An Decheng,Wang Wenxian,Wu Yucheng
Energy filtering effect is helpful to decouple Seebeck coefficient and electric conductivity, and dopant is helpful for improving conductivity; in this work, synergetic function of both is supposed to enhance zT values of tellurium.
In bulk Te and Sb 0.003 Te 0.997 , the Ni/Te heterojunction was built by electroless plating combined with spark plasma sintering. The Ni/Te interface barrier successfully decoupled the relationship between the Seebeck coefficient and the electrical resistivity. The Seebeck coefficient and resistivity of Ni/Te samples increased by 37.9% and decreased by 28.1%, respectively. Meanwhile, the thermal conductivity of the Ni/Te samples decreased by 25.8% (T = 300 K), and the zT value was increased by 36.4% compared to the pure Te sample. Consequently, a peak zT of 0.96 at 550 K is achieved in 18wt %Ni/Sb 0.003 Te 0.997 sample,which is 50% higher than Sb 0.003 Te 0.997 samples. This work indicates that electroless plating combined with spark plasma sintering is an effective method to construct heterojunction in bulk materials. This method should be widely applicable to various materials for achieving better thermoelectric properties.
研究领域:
材料科学
·
凝聚态物理
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能源材料
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半导体物理
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热电转换
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2018
·
IF 5.091
Xian-peng Zhang,Jian Luo,Da-xia Zhang,Tong-fang Jing,Bei-xing Li,Feng Liu
In this paper, porous microcapsules with tunable pore sizes were prepared using interfacial polymerization by employing a temperature-responsive cross-linking agent above its so-called cloud point temperature ( T scp ). The influences of porosity on the surface morphology , release profile and biological activity of the microcapsules were investigated. The results showed that both pore size and pore density could be controlled by regulating either the amount of cross-linking agent or the ratio of core material to shell material. Furthermore, the porosity of the microcapsules determined their release properties and further regulated the bioactivity of the microcapsules. In addition, the mechanism of pore formation was confirmed by investigating the morphology of microcapsules below the T scp . The microencapsulation methodology described here is convenient and versatile, which can be easily extended to encapsulate a broad range of lipophilic core materials.
研究领域:
药剂学
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生物材料
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纳米医学
·
药物递送
·
高分子科学
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2020
·Vol. 47
·期 5
·5918-5928
·
IF 3.83
Yu Zhao,Tianqi Zhang,Liaoyuan Chen,Tianbiao Yu,Jiayu Sun,Chuang Guan
In situ Ti(C, N), ring phase, and multi-phase enhanced Ni204-based alloy coating were prepared by adding various Ti/C/TiN ratios particles. The effects of the reinforcement phase on the microstructure, microhardness , tribological property, and microstructure characteristics at the interface between the coating and substrate were investigated. The results show that the coatings with a 5:1 mass fraction ratio of TiN/C exhibits the highest microhardness , which is 3.78 times higher than that of the original Ni204 coating. While, the coating with 21:7:2 mass fraction ratio of TiN/Ti/C exhibits the lowest friction coefficient , which is 4.44 times smaller than that of the original Ni204 coating. The addition of Ti and C particles promotes the precipitation of ring phase and carbides , reduces ceramic agglomeration, alleviates the floating of ceramic particles, and improves the bonding strength of reinforcement phases. Owing to the good mutual solubility among Fe, Ni, and, Cr elements, the diffusion happened at the interface between the coating and substrate.
研究领域:
材料科学
·
表面工程
·
金属学与金属工艺
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机械工程
·
复合材料
✓ 已验证
DOI
高影响因子
FOOD HYDROCOLLOIDS
·
2017
·
IF 4.747
Enmin Chen,Lianqi Cao,David Julian McClements,Shilin Liu,Bin Li,Yan Li
The impact of incorporating different levels of cinnamaldehyde (CA) into the oil phase used to prepare whey protein isolate (WPI)-stabilized nanoemulsions was investigated. Stable nanoemulsions could not be formed by pure CA, which was attributed to gravitational separation, but they could be formed from mixtures of CA and triglycerides. The mean particle diameter produced by homogenization decreased with increasing CA, which was attributed to the reduction of oil phase interfacial tension and viscosity. CA enhanced the physical stability of the nanoemulsions to salt addition (0–500 mM) and thermal processing (30–90 °C), but could not prevent droplet flocculation near the protein's isoelectric point (around pH 5). SDS-PAGE and surface load measurements indicated that more protein accumulated at the droplet surfaces in the presence of CA, which was attributed to interfacial crosslinking. CA may therefore be a useful means of modulating the physicochemical properties of protein-stabilized nanoemulsions.
研究领域:
食品科学
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胶体与界面化学
·
蛋白质功能特性
·
递送系统
·
食品纳米技术
✓ 已验证
DOI
高影响因子
Journal of Nanomaterials
·
2019
·Vol. 2019
·期 1
·2769519
·
IF 2.233
Hongchong Guo,Wei Li,Gang Sun,Bo You
We propose a facile and simple synthesis of photoluminescent (PL) carbon dot self-assembled monolayer films (CD-SAMFs) at oil-water interfaces. By using styrene both as the carbon source and the oil phase medium, we got our amazing CD-SAMFs under the copper acetate and hydrogen peroxide (Cu(Ac) 2 -H 2 O 2 ) catalytic-oxidation system. Without any surface modification, the spontaneously formed CD-SAMFs exhibit ultrathin thickness (<10 nm), bright luminescence, high transparency, and hydrophobicity, which have the potential as a new alternative to be used on multifunctional coating films, anticounterfeiting, displays, sensors, and optical devices.
研究领域:
材料科学
·
纳米科技
·
表面化学
·
光电子学
·
功能薄膜
✓ 已验证
DOI
高影响因子
Green Chemical Engineering
·
2024
·Vol. 7
·期 1
·51-60
·
IF 9.1
Siqi Chen,Xin Zhou,Shuo Wang,Ping Zhang,Wenbin Wu,Xiaohong Liu,Guilin Feng,Bin Zhang,Wangyan Xing,Meihua Zuo,Ping Zhang,Wei Xiang
Incorporating high valence dopants, such as W 6+ and Mo 6+ has been verified to be effective for tuning the microstructure and grain boundary of polycrystal Ni-rich cathode. However, the hindered consolidation of primary particles induced by dopants during lithiation calcination limits the utilization of those dopants to crystalize single-crystal Ni-rich cathodes with stabilized lattice and surface. Herein, high performance single crystal LiNi 0.84 Co 0.11 Mn 0.05 O 2 cathode with Al 3+ and W 6+ regulated lattice and boundary phase was construed based on commercial process with two-step calcination process containing separated lithiation and crystallization. The introduction of appropriate amount of Al 3+ in the first lithiation calcination of 6 h endows the bulk of crystalline with enhanced lattice stability, while the incorporation of W 6+ with stoichiometrical LiOH in the secondary crystallization calcination of 6 h renders uniformly distributed surface layer without hampering the growth of single-crystal. With the Al 3+ doped bulk lattice, W 6+ doped subsurface region and hetero-epitaxially grown Li 2 WO 4 , the cathode infused by two-step calcination exhibits high discharge capacity, rate performance, and cycling stability. Specifically, the modified LiNi 0.84 Co 0.11 Mn 0.05 O 2 exhibits exceptional capacity retention, maintaining 88.98% of its initial capacity after 200 cycles at a rate of 1 C within a voltage window of 2.7–4.3 V at a temperature of 25 °C in half-cell. This performance is markedly superior to the capacity retention of 72.96% observed for pristine cathode. Even when subjected to a stringent test after 200 cycles at the same rate, the modified cathode sustains an impressive capacity retention of 82.41% at an elevated cut-off voltage of 4.5 V and a temperature of 30 °C.
研究领域:
材料科学
·
电化学
·
能源存储
·
无机化学
·
固体化学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2023
·Vol. 11
·期 43
·23319-23329
·
IF 11.9
Bang-Zhou Tian,Yi-Yan Liao,Fang Xu,Xiao-Ling Qiu,Fu-Jie Zhang,Ran Ang
Interfacial modulation has been considered an effective strategy to enhance the thermoelectric (TE) performance by decoupling thermal and electrical parameters. However, inappropriate interfacial heterojunctions can significantly deteriorate electrical transport while enhancing phonon scattering, which causes no substantial improvement in TE performance. Herein, we introduce two-dimensional graphene or MXene into the Mg3.2Sb0.5Bi1.49Te0.01 matrix by ball mixing combined with rapid sintering to modify the composition and structure at the interface. The differences in morphology, size and distribution of interfacial graphene and MXene lead to distinct results which show that incorporated graphene flakes with larger size hinder the carrier transport, while the homogeneously dispersed tiny MXene provides improved carrier channels and boosts the mobility. On the other hand, such uniformly diffused heterogeneous MXene structures create stronger scattering on phonons compared to enriched graphene phases, resulting in a low lattice thermal conductivity of ∼0.66 W m−1 K−1 and enhanced zT of ∼1.0 at 513 K in Mg3.2Sb0.5Bi1.49Te0.01-0.6 wt% MXene with good component stability in air. This work highlights the importance of size, concentration, and distribution in the interfacial modulation strategy, demonstrating an effective method for developing high TE performance Mg3(Sb, Bi)2-based near-room-temperature materials.
研究领域:
材料科学
·
凝聚态物理
·
纳米材料
·
能源材料
·
固体化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）