INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2015
·
IF 2.587
Ziya Yu,Jun Ni,Linlin Fang,Daxiong Wu,Haitao Zhu
A multilayer three-dimensional (3D) structure made of hydrophobic stainless steel mesh has been designed for in situ continuous oil/water separation. The hydrophobic stainless steel mesh was prepared via a facile and environmental friendly method by etching with FeCl3 solution and coating with n-octadecylthiol. The as-prepared mesh allows oils (gasoline, diesel oil, engine oil) and organic solvents (hexane, liquid paraffin) to pass through and repels water. A separation device equipped with the multilayer 3D structure can continuously separate the aforementioned oils from oil–water mixtures. The separation efficiency of continuous separation is more than 99.0 wt % and shows little decrease after 10 cycles.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2021
·
IF 3.498
Ping-Ping Sun,Yu-Hang Zhang,Hongwei Shi,Fa-Nian Shi
A new 3-D Co-MOF with the molecular formula of C 10 H 8 Co 3 N 4 O 12 was prepared by hydrothermal method . As the anode for lithium ion battery , the electrode modified with 20% copper powder (Co-MOF-20) shows the specific capacity of 1138.5 mAh g −1 at 100 mA g −1 . Even under the high current test of 500 mA g −1 , Co-MOF-20 also shown excellent performance (349.6 mAh g −1 ) after 300 cycles. The advantages of Co-MOF-20 electrode are not only due to the introduction of copper powder conductive agent, but also the existence of three-dimensional structure which can provide ion transport channels.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
POLYMER COMPOSITES
·
2022
·Vol. 43
·期 10
·7420-7427
·
IF 3.531
Yalin Zhao,Zhixiong Wu,Zhengrong Zhou,Zhicong Miao,Rongjin Huang,Laifeng Li
High thermal conductivity polymer materials are highly desirable for thermal management applications in electrical encapsulation and energy fields. The construction of three-dimensional thermal conductivity structure has become an attractive method to improve the thermal conductivity of polymers. However, traditional methods for constructing 3D structures use prefabricated thermal conductivity models. Herein, we take epoxy resin as matrix, through the cooperation of sheet BN and spherical Al 2 O 3 to in situ construct a “pea-pod-like” 3D thermal network, to prepare high thermal conductivity Al 2 O 3 -BN-Epoxy (ABE) composites. Compared with pure epoxy resin, the thermal conductivity of the ABE composites and the random Al 2 O 3 -BN-Epoxy (R-ABE) composite is increased by 257% and 63%, respectively. And it still has a high thermal conductivity at low temperatures (696% enhancement at 60 K) for ABE 60% composite. This method of in situ construction of 3D thermal conductivity networks is of great significance in the development and application of thermal management materials.
研究领域:
材料科学
·
热管理材料
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2021
·Vol. 101
·期 1
·103-113
·
IF 2.326
Wang Chen,Shen Zhifeng,Hu Pengfei,Wang Tao,Zhang Xing,Liang Lidong,Bai Jianguang,Qiu Liewei,Lai Xiaojuan,Yang Xiaowu,Zhang Kang
Borax-PVA hydrogels with excellent mechanical properties are prepared by simple physical mixing of polyvinyl alcohol (PVA, thickener) and borax (cross-linking agent) at room temperature. The resulting hydrogel is a three-dimensional structure composed of boric ester bonds as physical crosslinking points. Thus, the spatial structure, swelling properties, viscoelastic properties, tensile properties, and self-healing properties of hydrogels with different ratios of borax and PVA are studied. XRD confirmed that the hydrogels have similar structures near 2 θ values of 10 and 20. The microstructure of the hydrogel is confirmed by SEM and TEM. With an increase of borax mass fraction, the pore structure and morphology of hydrogel are more ordered, with substantial quantities of water immobilized within their three-dimensional structure. The viscoelastic properties and tensile properties showed that when the mass fraction of borax is 5%, the storage modulus and compressive stress of the hydrogel are the highest, reaching 100 Pa and 5.6 kPa, respectively. In addition, through physical and chemical stimulation (heating and varying pH, respectively), the hydrogels also showed reversible gel–sol conversion characteristics, indicating that the boric ester bonds have self-healing properties.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Bin Wang,Yaotian Yan,Bin Qin,Zhenyu Ye,Jian Cao,Junlei Qi
Thermal interface materials are crucial for addressing the hot issues of a rapid increase in thermal density in narrow and limited service spaces. Flexible and designable epoxy resin (EP) based composites are competitive choice yet lacks desirable thermal conductivity (∼0.2 W m −1 K −1 ) and mechanical properties (tensile strength: ∼19.6 MPa). Herein, EP-based composites with a reinforced three-dimensional (3D) interconnected carbon material architecture were prepared by in-situ growing 1D carbon nanotubes (CNTs) on the surface of 2D carbon fiber braid (CFB) and infiltrating matrix EP. CNTs not only promote the wettability between carbon fibers inside CFB and EP but also observably bridge the adjacent carbon fibers. The analysis of numerical models reveals the prominent contribution of 3D CFB/CNTs network to a significant increase in thermal conductivity. Non-equilibrium molecular dynamics (NEMD) indicates the high intrinsic thermal conductivity of CNTs in both systems: single CNT model and CNT/Ni model. The coupling behavior of high-frequency phonons at the interface contributes to the in-plane thermal transport. The in-plane thermal conductivity of 7.86 W m −1 K −1 and the through-plane thermal conductivity of 5.85 W m −1 K −1 are obtained in the composites with 23.2 wt% hybrid fillers, increased by 3830 % compared to neat EP. The tensile (58.93 MPa) and compressive strength (138.83 MPa) are also enhanced, meeting practical demands. These properties even perform no obvious changes after 100 cycles of bending. The stable and reliable EP-based composites with outstanding comprehensive performance designed by this work have enormous application potential in the advanced heat dissipation system.
研究领域:
材料科学
·
热管理技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Chenhan Xiong,Qiang Long,Jiaqi Chen,Yanqiu Yu,Xinming Lian,Rui Xue,Junjie Wang,Shufang Zheng,Guoping Du,Nan Chen
Effective design and construction of highly electrochemically active materials on conductive substrates with hierarchical nanostructures are critical for enhancing the electrochemical energy storage performance of electrodes. However, the design of such special structures is still challenging. In this study, a special three-dimensional@three-dimensional (3D@3D) NiCo-layered double hydroxide (NiCo-LDH) composite nanostructure is developed through the innovative approach of in-situ growth of arrayed Co-Zif-L on conductive substrate, disrupting the Zif-67 formation. This is followed by ion exchange process and electrochemical synthesis for growing 3D NiCo-LDH nanosheets. A unique structure with the 3D NiCo-LDH embedded in the 3D Co-Zif-L structure, termed as 3D@3D, is resulted. This spatial structure not only enhances their mechanical stability and adhesion strength through the in-situ growth process, but also provides a greater number of electrochemical active sites due to its ultra-large specific surface area. Density functional theory (DFT) calculations reveal that the NiCo-LDH@Co-Zif-L composite nanostructure exhibits an enhanced density of states (DOS) near the Fermi level compared to individual components, indicating excellent conductivity. With this unique structure, the NiCo-LDH@Co-Zif-L/NF electrode demonstrates an area-specific capacity of 4.1C cm −2 and retains 81.9 % of its initial capacitance after 5000 cycles. Moreover, the assembled hybrid supercapacitor achieves an energy density of 222.2 mWh cm −2 at a power density of 800 mW cm −2 (66.9 Wh kg −1 at 245 W/kg). The innovative approach in this work provides new insights into the utilization of Zif materials and designing electrode materials with special structures for high-performance electrochemical energy storage devices.
研究领域:
材料科学
·
能源工程
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Ting Xu,Chi Fei,Houqi Zhou,Yilong Fan,Keying Tang,Chunyu Chen,Dianchun Ju,Zuoqiao Zhu,Rui Mao
In this work, a layered double hydroxide with three-dimensional structure (3D-MgAl-LDH) was synthesized by the template-assisted method, the growth mechanism of the three-dimensional structure was investigated through a structure-modulation process, and the adsorption properties were tested. Adsorption experiments revealed that, compared to the conventional 2D inorganic LDHs, the 3D organic LDHs intercalated with SDS exhibited superior adsorption performance for dyes under all conditions. Specifically, the maximum removal capacity of MO reached 1282.5 mg·L -1 , which was almost six times higher than 2D inorganic LDHs, this enhancement was attributed to the pore space formed by the aggregation of 2D lamellae, which provided additional adsorption sites. Adsorption kinetics and isotherm modeling indicated that the removal behavior closely followed the Tempkin isotherm model, and the adsorption process was better described by the Elovich kinetic model. Analysis using XPS and FT-IR indicated that anion exchange was the primary mechanism driving the removal of MO. The interaction energy between 3D-MgAl-LDH and MO was calculated by using density functional theory (DFT), which further confirmed the adsorption mechanism. Moreover, 3D-MgAl-LDH maintained stable adsorption performance after five cycling experiments. This work introduces a novel structural material for industrial wastewater treatment and broadens the dimensional options for LDHs.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2016
·
IF 4.803
Gang Zhou,Chen Wu,Yuehua Wei,Chengchao Li,Qingwang Lian,Chao Cui,Weifeng Wei,Libao Chen
In this article, tufted NiCo 2 O 4 nanoneedles directly grown on carbon nanofibers (CNFs) were successfully fabricated by a facile hydrothermal procedure and subsequent annealing. The morphology of tufted NiCo 2 O 4 nanoneedles/carbon nanofibers (TNN/CNFs) composite appears like clustered acicular leaves on branches, forming a unique three dimensional (3D) hybrid structure. Compared to NiCo 2 O 4 nanoneedles spheres (NNS) without CNFs, the TNN/CNFs material presents a reversible discharge specific capacity up to 1033.6 mAh g −1 at a current density of 200 mA g −1 even after 250 cycles, with the coulombic efficiency of above 98%. The unique 3D hybrid structure formed with CNFs should be responsible for the superior lithium storage capacity and enhanced cycling performance, which provides short distance for ions transport, high specific surface area for large contact areas between electrode and electrolyte, together with the interspace to accommodate volume change and smaller agglomeration tendency. Moreover, the design route proposed offers more possibility to preparation of high-performance anode materials for LIBs.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
THIN SOLID FILMS
·
2019
·
IF 1.888
Yi-Yi Liu,Kai-Bo Chen,Hong Chen,Yang-Hong Wu,Xin-Yu Ye,Xin Bi,Bing-Xin Lei,Wei Sun,Zhen-Fan Sun
We have demonstrated a facile synthetic strategy for the direct growth of branched, three dimensional anatase hierarchical hyacinth-like TiO 2 (AHHT) arrays on fluorine-doped tin oxide glass substrate via a one-step hydrothermal method . The AHHT arrays with high specific surface area of 79.5 m 2 g −1 are 400–650 nm in diameter and about 11 μm in length prepared at 200 °C for 12 h using potassium titanium oxalate, diethylene glycol, sodium chloride, and water. The AHHT arrays are constructed by a large number of nanosheets which are composed of nanowires, as confirmed by field emission scanning electron microscope and transmission electron microscope. A possible formation process of the AHHT arrays has been investigated by means of time-dependent experiment. Dye-sensitized solar cell based on the AHHT arrays exhibits an efficiency of 6.13% because of the synergistic effects of superior electron transfer , higher surface area and efficient light scattering.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2019
·
IF 3.218
W. Zheng,P.G. Zhang,J. Chen,W.B. Tian,Y.M. Zhang,Z.M. Sun
We developed herein a fast and scalable approach to synthesize three-dimensional MXene derived metal oxide/carbon nanotube/iron hybrids via microwave irradiation under ambient condition. SEM and TEM images show that carbon nanotubes vertically grow on the MXene nanosheets , with both the nanosheets and the nanotubes decorated by TiO 2 /Fe 2 O 3 nanoparticles , resulting in a hierarchical hybrid structure. The obtained hybrids demonstrate good electrochemical performance when tested as anode in LIBs , due to their three-dimensional conductive networks and hierarchical structures for efficient charge-transfer, and the accessibility of lithium ions to the electrode materials . Furthermore, this work offers new exciting opportunities to developing electrode materials with high specific capacity for energy conversion and storage.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 36
·28633-28642
·
IF 3.84
Huaizhong Shen,Yuxin Wu,Liping Fang,Shunsheng Ye,Zhaoyi Wang,Wendong Liu,Zhongkai Cheng,Junhu Zhang,Zhanhua Wang,Bai Yang
A rapid and cost effective method has been developed to fabricate 3 dimensional (3D) ordered structures by photo-generating silver networks inside a 1D layered heterogeneous laminate composed of poly(vinyl alcohol) (PVA) and poly(methyl methacrylate) (PMMA). By designing the photo-mask meticulously, the silver nanoparticles (NPs) produced by UV light aggregate to form frameworks in different forms, which perform as the anisotropic component, i.e. the building blocks, thus converting the 1D structure into 3D. Formation of silver NPs increases the refractive index (RI) of the PVA layers, thus bringing optical change to the 1D laminar structure, which allows us to trace the silver formation process by measuring the change of RI value and reflectance spectra. The 1D layered structure is a good building matrix for 3D construction because the total number of layers and the layer thickness can be finely tuned flexibly which allow us to further study the various properties caused by the structural modulation. By utilizing photo-reactive silver ions, an innovative strategy of fabricating 3D structures through in situ photo-generating silver building blocks inside the laminar matrix is established, which makes it possible to fabricate 3D micro/nano composite materials with potential applications in fields such as sensors and photonic meta-materials.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Chemistry
·
2016
·
IF 2.322
Yuhang Xie,Hulin Zhang,Guang Yao,Saeed Ahmed Khan,Xiaojing Cui,Min Gao,Yuan Lin
In this paper In 2 O 3 nanoshells have been synthesized via a facile hydrothermal approach. The nanoshells can be completely cracked into pony-size nanocubes by annealing, which are then used as a support of Pt catalyst for methanol and ethanol electrocatalytic oxidation . The prepared In 2 O 3 and supported Pt catalysts (Pt/In 2 O 3 ) were characterized by X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), field effect scanning electron microscopy (FESEM), and transmission electron microscopy (TEM). Cyclic voltammetry (CV), linear sweep voltammetry (LSV), chronoamperometry and electrochemical impedance spectroscopy (EIS) were carried out, indicating the excellent catalytic performance for alcohol electrooxidation can be achieved on Pt/In 2 O 3 nanocatalysts due to the multiple active sites, high conductivity and a mass of microchannels and micropores for reactant diffusions arising from 3D frame structures compared with that on the Pt/C catalysts.
研究领域:
材料科学
·
电化学
✓ 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）