INORGANIC CHEMISTRY COMMUNICATIONS
·
2019
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IF 1.795
Qing-Qing Huang,Yang-Jie Lin,Rui Zheng,Wei-Hua Deng,Chiranjeevulu Kashi,P. Naresh Kumar,Guan-E Wang,Gang Xu
Metal-organic frameworks (MOFs) are a kind of functional porous materials with the potential applications in gas adsorption and separation, catalysis, energy storage, sensor, and electrical conductivity . However, the insulating nature of the mostly MOFs limits their application in the electronic field. A new three-dimensional (3D) metal-organic framework composed of Cu 2+ centres and polyacid linkers (TATAB 3− ) was synthesized by solvothermal method , which contains two types of Cu 24 cages. The crystal structure is cubic and each Cu is coordinated by five oxygen atoms which can be confirmed by the single crystal X-ray diffraction, infrared spectra and TGA analysis. The conductivity for this 3D MOF is increased by four orders of magnitude after doping with 7,7,8,8-tetracyanoquinodimethane (TCNQ) and realizes the transformation from an insulator to semiconductor.
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 Chemistry C
·
2022
·Vol. 10
·期 40
·14929-14938
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IF 8.067
Xudong Liu,Yong Liu,Shangli Dong,Xuefeng Zhang,Shida Hou
Chemical doping of MXenes with heteroatoms is expected to be a promising strategy for enhancing their electrochemical performance. Nevertheless, the synergistic effects of chemical doping and 3D structure construction have rarely been investigated in depth. Aiming to avoid MXene nanosheet restacking and further enhance the electrochemical performance, herein, we reported a simple strategy combining nitrogen doping with a 3D structure construction on MXenes via a one-step hydrothermal method. The location and types of nitrogen doping can be adjusted by hydrothermal conditions. The obtained nitrogen-doped Ti3C2Tx aerogel had an ultra-high specific surface area of 200.8 m2 g−1 with high porosity. The open reticular walls can expose more nitrogen-enriched Ti3C2Tx edges to the electrolyte. Nitrogen dopants at the edges of Ti3C2Tx nanosheets produced more number of active sites and provided higher pseudocapacitance, and the presence of N-C4 increased the electron mobility of Ti3C2Tx, which reduced charge transfer resistance evidently. As a result, the nitrogen-doped Ti3C2Tx aerogel showed an excellent specific capacitance (531 F g−1 in H2SO4 electrolyte) with good cyclic stability (remaining 96% after 5000 cycles).
研究领域:
材料科学
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电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2018
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IF 5.091
Deqiang Chen,Xiang Liu,Huali Nie
A novel, three-dimensional (3D), self-supporting material—the crumpled graphene ball—was developed using an aerosol capillary approach. The resultant crumpled-graphene-ball architecture showed a self-supporting, 3D network microstructure with plenty of ridges and wrinkles. Due to their unique structural characteristics, the 3D balls exhibited a rapid adsorption rate and superior adsorption capacity toward the copper ion (Cu 2+ ). It was noted that the adsorption capacity for Cu 2+ reached about 224.56 mg/g within 2 min. A high adsorption capacity, fast adsorption kinetics , excellent regeneration and reusability characteristics, and the ease of materials processing make these crumpled graphene balls ideal candidates for heavy metal ion decontamination in practical application.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Electronic Materials
·
2025
·
IF 4.7
Renxin Xu,Hongyi Luo,Zhengyi Li,Yahan Gao,Wei Zhao,Xiao Li,Wei Jin,Dan Liu
Poor microwave-absorbing performance of a carbonaceous–magnetic hybrid at low frequency is one of the great challenges that needs to be solved urgently. Constructing a three-dimensional structure of a graphene-based absorber with high-loading ferrite nanoparticles onto graphene surfaces is an effective strategy to boost the low-frequency absorbability. Therefore, we constructed substrates of crumpled monolayer graphene oxide spheres by first spray-drying and synthesized high-loading iron hydroxide nanograins onto the substrates by a simple oil-bath heating. Followed by an annealing treatment under Ar gas, an ultrahigh Fe3O4 magnetic crystals loading onto crumpled spherical reduced graphene oxide hybrid (Fe3O4@crGO) was obtained. The wrinkled architecture provides a large number of interface angles for ultrahigh Fe3O4 nanocrystals to avoid the massive agglomeration, which lowers the complex permittivity and improves the complex permeability to perfect absorber’s impedance matching at low frequency. Meanwhile, the impressive conducting loss of rGO, magnetic loss of Fe3O4 nanograins, polarization loss of heterogeneous interfaces, and multiple reflection and scattering of microwaves within the three-dimensional architecture boost the attenuation capability of the absorber. As a result, the as-prepared Fe3O4@crGO-30 hybrid exhibits a superb reflection loss of −52.3 dB at 5.4 GHz. In addition, by tailoring the thickness ranging from 2.5 to 5.0 mm, full coverage absorption in C and X bands can be achieved. This work provides a simple, efficient, and promising way to prepare a graphene-based absorber with perfect low- and middle-frequency absorption capacity.
研究领域:
材料科学
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电磁学
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Energy
·
2023
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IF 9.3
Nanrui Li,Tianqi Jia,Yanru Liu,Yunfei Ouyang,Yao Lv,Geng Zhong,Yufeng Wang,Bo Sun,Sirong Lu,Shifei Huang,Feiyu Kang,Yidan Cao
The formation of Li dendrites and dead Li, which causes short circuits, continuous side reactions, low Coulombic efficiency (CE) and thermal runaway, severely hinders the development of anode-free lithium metal batteries . Here, Cu-based current collector with super-three-dimensional lithiophilic modification layer is developed by the pyrolysis of resorcinol formaldehyde on 3D engineered copper mesh (a-RF@3D CM). The modification layer, consisting of highly dispersed CuO x sites in the O-containing defective carbon, together with the super-three-dimensional microstructure exhibits excellent lithiophilicity and capability to effectively reduce the nucleation overpotential, accommodate the uniform dendrite-free lithium deposition, promote stable and inorganic-rich solid electrolyte interphase formation, and improve the cycle stability. As a result, the a-RF@3D CM current collector exhibits reduced nucleation overpotential of 14.2 mV and prolonged cycling life over 400 cycles with average CE >98.5%. In the LiFePO 4 ||a-RF@3D CM anode-free cell, average CE of 99.50% and capacity retention of 60.66% are successfully achieved after 100 cycles. Meanwhile, average CE 99.78% and capacity retention of 64.43% are successfully achieved in LiFePO 4 ||Li@a-RF@3D CM cell (N/P = 1.6) after 200 cycles. The work provides feasible way to realize the fabrication of anode-free lithium metal batteries and also enhance the understanding of solid electrolyte interface evolution and regulation strategy of Li plating–stripping in advanced Li metal-based batteries.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
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2018
·Vol. 6
·期 21
·9874-9881
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IF 9.931
Yuchao Wang,Canzhu Wang,Xiangju Song,Minghua Huang,Suresh Kumar Megarajan,Saleem Farooq Shaukat,Heqing Jiang
Solar-driven evaporation based on photothermal membrane has been proved to be promising in the field of fresh water generation, and it is considered as an emerging strategy both in laboratory and in industrial scales. However, further research efforts have to be made on light harvesting and thermal management to improve water evaporation. In this study, an extensive research was carried out to develop a bio-inspired 3D photothermal cone for high-efficiency solar-driven evaporation with minimum light reflection and heat loss to bulk water. The artificial photothermal cone with a polypyrrole (PPy) coating layer was facilely fabricated via chemical vapor deposition polymerization (CVDP). The present 3D cone with a rationally designed conical structure exhibited satisfactory absorbance around 99.2% in the entire solar spectrum, which is comparable with the performances of super-black materials. Additionally, the heat loss has been minimized by elevating the photothermal cone to narrow the contact area between water and the PPy-based cone with good wettability, thus achieving a highly efficient interface heating. The solar conversion efficiency up to 93.8% for evaporation was achieved for the photothermal cone under one sun illumination, which is about 1.7 times as high as the result obtained for a plane film. Based on our results, controlling the 3D morphology can be considered as an important strategy for designing a novel high-efficiency photothermal membrane and also, it provides new opportunities in practical application.
研究领域:
材料科学
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能源工程
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
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2023
·Vol. 58
·期 35
·13957-13973
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IF 4.5
Xu Kaizheng,Ma Yingyi,Yao Shun,Liu Xiaoting
The fabrication and functionalization of three-dimensional (3D) MXene are vital for diverse high-performance applications. Herein, the construction of 3D porous MXene architecture and its functionalization with graphene are synchronously implemented by breath figure method. 3D porous rGO/MXene with multi-scale pores is prepared by simply casting the mixture of GO/surfactant and MXene/surfactant solution under humid environment and the subsequent reduction process. The aggregation inhibition of GO and MXene nanosheets at multi-scale caused by surfactant intercalation and the formation of 3D porous structure, as well as the increase in surface area induced by the introduction of GO, enlarged lamellar spacing and multi-scale porous structure endow porous rGO/MXene with excellent electrochemical performance. The synergy of rGO and MXene leads to further improvement in electrochemical property and its stability. Low detection limit, good anti-interference, repeatability, reproducibility, long-range stability and accuracy of actual sample testing are exhibited when porous rGO/MXene is used for electrochemical detection of DA. Furthermore, the electrochemical performance could be controlled via tuning the porous structure and ratio of GO and MXene. This study not only demonstrates the superiority of porous rGO/MXene toward electrochemical sensing, but also proposes a simple and universal method for controllable construction and functionalization of 3D MXene architecture. Graphical Abstract
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
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2023
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IF 4.6
Wenjuan Zhang,Yuheng Li,Yaxian Wang,Youliang Wang,Miao Kou,Xiangyue Yang,Qianqian Chu,Kun Zhao
An efficient route is proposed to synthesize a novel three-dimensional (3D) magnetic MXene aerogel (3D MXene/Fe 3 O 4 ). 3D MXene were synthesized by self-assembly of 2D MXene Ti 3 C 2 T x using ethylenediamine (EDA) as crosslinking inducer, then Fe 3 O 4 was in situ coprecipitation onto 3D MXene. 3D MXene/Fe 3 O 4 was applied as an adsorbent for Ag(I) removal from aqueous solutions. 3D MXene/Fe 3 O 4 exhibits a cross-linked 3D porous network with magnetic Fe 3 O 4 nanoparticles uniformly dispersed on its surface and edges. The maximum adsorption capacity of 3D MXene/Fe 3 O 4 for Ag(I) was 2385 mg g −1 . The kinetics and isothermal process during adsorption were described accurately by the pseudo-second-order model and the Freundlich isotherm model, and the adsorption process was driven by chemisorption and multilayer adsorption, where the diffusion mechanism involved surface diffusion and intraparticle diffusion. Furthermore, the 3D MXene/Fe 3 O 4 are recyclable, retaining 71% of the initial removal rate after 5 adsorption/desorption cycles.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
Desalination and Water Treatment
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2024
·
IF 1
Yuhang Xu,Wei Li,Sisi Qin,Kai Su,Junmin Chen,Shengli Zhang
ABSTRACT In this study, La(OH) 3 -loaded Juncus effusus (La-JE) with a three-dimensional structure was prepared via an in-situ precipitation and then wrapped in a cellulose membrane. The La-JE not only avoided the leakage of La(OH) 3 but also was separated from solution easily. The optimal pH for phosphate removal by the La-JE was 6. The removal rate of phosphate was positively correlated with adsorption time, La-JE dosage and reaction temperature, and negatively correlated with phosphate concentration. The adsorption process conformed to pseudo-second-order kinetic model and was better fit by Freundlich model. At 25°C, the maximum adsorption capacity of the La-JE was 22.75 mg·P/g. The influence of SO 4 2– , Cl – , NO 3 – , NH 4 + , HCO 3 – and CO 3 2– on phosphate removal was negligible, suggesting that the La-JE had good anti-interference ability. Mechanism analysis showed that the removal process of phosphate was related to both ligand exchange and surface precipitation. The application in real water environment exhibited that the La-JE had good potential for advanced dephosphorization of sewage treatment plant and natural waterbody remediation.
研究领域:
环境科学
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水处理技术
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
You Zhou,Zhengyong Huang,Huijun Liao,Jian Li,Hanxiang Wang,Yu Wang
Graphene, as a family of 2D materials , can be used as film electrodes in energy storage devices because of its high surface area, electrical conductivity , and environmental stability. However, the pure graphene electrode attains aggregating nature, which significantly limits its practical application. To solve the overstacking problems, we construct a 3D porous reduced graphene (rGN) film by a novel and green Cu 2 O template-assisted route based on “coordinating etching and precipitating” process. Noticeably, a brand new material-NiCo 2 O 4 is generated when the template is removed by optimizing the coordinating etchant and the reaction conditions. It is observed that NiCo 2 O 4 perfectly imitates the shape of Cu 2 O template and has a hollow hydrangea-like structure. Furthermore, these emerging hollow NiCo 2 O 4 hydrangeas not only prevent the re-accumulation of sheet layers, but also afford 3D porous structure for film, and greatly enhance the energy storage properties on account of the pseudocapacitance of NiCo 2 O 4 . The 3D graphene/NiCo 2 O 4 film (3D rGN/NiCo 2 O 4 ) exhibits high specific capacity of 708.36 F g −1 at 1 A g −1 , remarkable rate performance of 582.11 F g −1 even at 16 A g −1 , and superior circulation ability with 94.3% capacitance retention after 6000 cycles at 10 A g −1 , indicating the potential applications in energy storage.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2019
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IF 3.131
Xia Xu,Jiao Zou,Xiao-Ru Zhao,Xin-Yu Jiang,Fei-Peng Jiao,Jin-Gang Yu,Qi Liu,Jie Teng
A porous three-dimensional (3D) macrostructure was facilely fabricated by embedding egg white (EW) into graphene oxide (GO) (CEG) under hydrothermal condition. The microstructure, pore size distribution and surface compositions of CEG were characterized by scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) method, X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, thermogravimetric analysis (TGA) and Fourier transform infrared (FT-IR) spectroscopy. The as-prepared 3D CEG composite was used for the aqueous adsorption of rare earth elements (REEs) including La(III), Y(III), Yb(III), Er(III) and Nd(III) from aqueous solutions. The condition parameters such as contact time, initial REEs concentration, pH values and adsorption temperature were investigated. The adsorption could achieve equilibrium within 90 min and the adsorption of REEs onto 3D CEG 1:1 composite fitted well to the pseudo second-order kinetics model and the Langmuir isotherm model. Thermodynamic and kinetic studies indicated that the adsorption process was endothermic and spontaneous in nature. The maximum adsorption capacities of 3D CEG 1:1 composite were 42.80, 32.16, 56.44, 51.44 and 50.16 mg g −1 toward La(III), Y(III), Yb(III), Er(III) and Nd(III), respectively. The 3D CEG 1:1 composite was used to remove the La(III), Y(III), Yb(III), Er(III) and Nd(III) from Yudai river water, Xiangjiang river water, spring water and tap water with spiked recoveries in the range 62.6–99.6%. The 3D CEG 1:1 composite showed a good adsorption-desorption ability, and the percentage removal of 3D CEG 1:1 composite for Yb(III) remained constant of 100% at a low Yb(III) concentration even after five cycles.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2020
·
IF 4.65
Siran Xu,Yeshuang Du,Xian Liu,Xin Yu,Chunlin Teng,Xiaohong Cheng,Yunfeng Chen,Qi Wu
Developing earth-abundant and high-efficient catalysts for the oxygen evolution reaction (OER) to enhance the efficiency of water splitting is highly desirable. Metal-doping and construction of heterogeneous structure are two start-of-the-art strategies to increase the OER activity of transition metal materials. In this work, we exhibit the design and construction of a unique coral-like 3D hierarchical Mn-doped Ni 2 P–Ni 5 P 4 /NF (Mn–Ni–P/NF) OER catalyst. The Mn-doped Ni 2 P–Ni 5 P 4 /NF hybrid catalyst is synthesized on Ni foam by hydrothermal and followed in situ phosphidation, which exhibits superior OER catalytic performance with an overpotential of 230 mV (vs. RHE) at a current density of 10 mA/cm 2 and 70 mV lower than Ni 2 P–Ni 5 P 4 /NF (300 mV). Furthermore, it also exhibits good long-term stability for 20 h. This work provides a good thought named metal-doping transition metal phosphide complexes to improve the catalytic activity for OER. Such a superior OER performance is main attributed to the unique morphology, the doping of metal Mn regulating the metal phosphide Ni 2 P–Ni 5 P 4 nanosheet structure to be a 3D rough high-active-sites nanorod structure with the in situ formed oxidized Ni species on the surface and effective composite nanostructures .
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）