ACS Applied Materials & Interfaces
·
2013
·
IF 5.008
Shi Peng,Qiang Zheng,Xin Zhang,Linghui Dai,Jingxian Zhu,Yanbin Pi,Xiaoqing Hu,Wenqing Cheng,Chunyan Zhou,Yinlin Sha,Yingfang Ao
A disintegrin and metalloproteinase with thrombospondin motif-4 (ADAMTS-4) plays a pivotal role in degrading aggrecan, which is an early event in cartilage degrading joint diseases such as osteoarthritis (OA). Detection of ADAMTS-4 activity could provide useful clinical information for early diagnosis of such diseases and disease-modifying therapy. Therefore, we developed a ADAMTS-4 detective fluorescent turn-on AuNP probe (ADAMTS-4-D-Au probe) by conjugating gold nanoparticles with a FITC-modified ADAMTS-4-specific peptide (DVQEFRGVTAVIR). When the ADAMTS-4-D-Au probe was incubated with ADAMTS-4, the fluorescence recovered and fluorescence intensity markedly increased in proportion to concentrations of ADAMTS-4 and the probe. A nearly 3-fold increase in fluorescent intensity in response to only 3.9 pM of ADAMTS-4 was detected, whereas almost no fluorescence recovery was observed when the probe was incubated with matrix metalloproteinase (MMP)-1, -3, and -13. These results indicate a relative high sensitivity and specificity of the probe. Moreover, ADAMTS-4-D-Au probe was used to detect ADAMTS-4 activity in synovial fluid from 11 knee surgery patients. A substantial increase in fluorescent intensity was observed in the acute joint injury group as compared to the chronic joint injury and end-stage OA groups, indicating that this simple and low-cost sensing system might serve as a new detection method for ADAMTS-4 activity in biological samples and in screens for inhibitors for ADAMTS-4-related joint diseases. Additionally, this probe could be a potential biomarker for early diagnosis of cartilage-degrading joint diseases.
研究领域:
生物医学
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分子生物学
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纳米医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2024
·
IF 4
Ya-Nan Yu,Shuai Yang,Xi-Yao Li,Rou Huang,Jie Zhou,Zheng Yin
Ligand with mixed-groups contributes to the construction of special structure motif with novel properties, yet it is challenging to understand and regulate the competitive coordination of different functional groups toward metal ions. Herein, the crystal engineering for MOF construction from two linear di-topic linkers of 4-(1H-tetrazol-5-yl)benzoic acid (H 2 tzba) and the longer 4′-(1H-tetrazol-5-yl)-[1,1′-biphenyl]-4-carboxylic acid (H 2 tzbba) featuring dual groups of phenyl-carboxylate and tetrazole, with three typical 3d metal ions (Mn 2+ , Fe 2+ and Zn 2+ ) were investigated. A series of five new MOFs, that are [Mn 3 (tzba) 3 (dmf) 4 ]·11dmf ( 1 , dmf = N ,N-Dimethylformamide), [Mn(tzba)(H 2 O)] ( 2 ), [Zn 2 (tzba) 2 (dmf)]·0.5dmf ( 3 ), [Fe 2 (tzba) 2 (dmf)]·0.5dmf ( 4 ) and [Zn 2 (tzbbz)(gac)(dmf) 2 ]·1.5dmf ( 5 ), were synthesized under solvothermal reactions. The modified solvent template and temperature effects lead to 3D framework of 1 (dmf solution under 433 K) with [Mn 3 (tz) 3 (COO) 3 ] nodes and 1D hexagonal channels, while the 2 (water solution under 373 K) posssesses compact pillared-layer motif from [Mn 2 (tz) 2 ] nodes. Under changed metal salt reactents but same solvent of dmf, the generated 3 and 4 have isoreticular and porous pillared-layer structure constituted of [M 2 (COO) 2 ] nodes. The use of tzbba coupled with a crucial auxiliary ligand of glycollic acid, leads to 5 as porous pillared-layer MOFs with 1D rounded channels. The porous flexible skeleton of 1 constructed from [Mn 3 ] node with four coordinated dmf facilitates post-synthetic metal exchange of the Mn 2+ by radius similar metal ions following priority of Cu 2+ < Zn 2+ < Ni 2+ < Co 2+ , with maximum exchange percentage ranging from 17 % to 69 %. Time dependent ICP-AES analysis revealed the quite wide feasible solvents for post-synthetic metal exchange, as well as the fine control on substituting degree based on soaking temperature and time. Particularly, the compatible introduce of four different metal ions support the potential of preparing bi-, tri-, tetra- and penta- metal MOF crystals, that can not be obtained by traditional solvothermal reactions.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Yan Zhou,Boxin Li,Han Zhou,Wenlong Zhang,Meng Yu,Xiaohui Ning
Liquid metal batteries (LMBs) trigger strong interest due to their longevity, low cost, high safety, and scalability. However, reliance on a single metal cathode, such as Sb, which experiences a substantial price increase of 189.14 % over the past decade, poses challenges for sustainable energy storage. Additionally, single metal typically attends to one aspect and loses another. Sb offers high voltage, but encounters high temperature and unstable cycling; Bi empowers good cycle while falls short in energy density; Sn or Pb could reduce the melting point but suffers from low voltage. To leverage the strengths of each metal, we combine Sb, Bi, Sn and Pb to design ternary and quaternary alloy cathodes. The resultant Li || SbBiSnPb cell demonstrates outstanding overall performance with nearly 70 % capacity retention at 1000 mA cm −2 , and stable cycling with no capacity decay during 344 cycles. Furthermore, the price of multi-metal alloy fluctuates 2–3 times less than that of pure Sb, indicating that alloying can effectively evade the dependence on single metal and ensure a stable and flexible material supply. This preliminary investigation establishes a foundation for development of preferable alloy electrodes and offers prospects for high-performance LMBs in grid-scale energy storage.
研究领域:
材料科学
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能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
Analytical Methods
·
2017
·Vol. 9
·期 48
·6801-6807
·
IF 1.9
SongGe Zhang,Han Zhu,PiMing Ma,Fang Duan,WeiFu Dong,MingLiang Du
The key issue in efficient electrochemical detection of trace heavy metal ions (HMIs) is to design hierarchical nanostructure electrodes with high sensitivity and low detection limit. In this study, bimetallic PtAu alloy nanoparticles (PtAuNPs) with uniform size and distribution were constructed in electrospun carbon nanofibers (CNFs) by combining an electrospinning procedure and an in situ thermal reduction process. The PtAu/CNF membrane can be directly used as a sensor electrode for simultaneous detection of trace Cd2+, Pb2+, and Cu2+ by square wave anodic stripping voltammetry (SWASV). The prepared PtAu/CNF membrane is capable of simultaneously detecting Cd2+, Pb2+, and Cu2+ with a sensitivity of 0.10 μM and correlation coefficients of 0.976, 0.993, and 0.976, respectively, indicating high sensitivity and good linear relation. The excellent sensitivity and low detection limit for HMI detection were ascribed to the high conductivity of CNFs, fast response of PtAu alloy NPs, and high specific surface area of the hybrid structure. The present research provides a convenient and efficient way to construct new sensors for simultaneous trace detection of HMIs.
研究领域:
材料科学
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环境科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2017
·Vol. 5
·期 41
·21903-21908
·
IF 8.867
Binbin Jiang,Zeyuan Tang,Fan Liao,Haiping Lin,Shunkai Lu,Youyong Li,Mingwang Shao
The hydrogen evolution reaction (HER) is a fundamental electrochemical reaction to produce hydrogen gas from the electrolysis of water, and has been regarded as an attractive solution to many energy challenges. In the past few decades, platinum has been widely demonstrated to split water into hydrogen gas at high reaction rates and low overpotentials. Nevertheless, decreasing the loading of Pt in the designed electrocatalysts is very significant. However, with low Pt loading, it is challenging to maintain excellent catalytic performance. Here we report a Pt–Au–Si ternary nanocomposite as a highly active catalyst for the HER. The optimal composition of Pt–Au–Si was determined to be 7.2 : 31.3 : 61.5 (Pt : Au : Si, mass ratio) with a Tafel slope of only 24 mV dec−1. To be specific, the mass activity of the Pt–Au–SiNW-2 catalyst was 6.5 fold that of a 40 wt% Pt/C catalyst at an overpotential of 60 mV. More importantly, the cathodic current density even surpassed 40 wt% Pt/C when the overpotential was larger than 0.17 V (the corresponding current density was 108 mA cm−2). The outstanding catalytic performance might be derived from the synergy of the respective properties of the three components: the fast hydrogen adsorption rate on Pt, the quick migration of the adsorbed hydrogen atoms on Au and the rapid hydrogen evolution rate on Si. This research opens up a novel strategy to prepare highly efficient catalysts for electrochemical hydrogen evolution reactions.
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
RSC Advances
·
2015
·Vol. 5
·期 126
·103797-103802
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IF 3.84
Ying Ma,Li Xu,Wei Chen,Chao Zou,Yun Yang,Lijie Zhang,Shaoming Huang
A facile method for synthesizing hollow Au/Pt nanostructures is reported; this strategy involves using small sized Au nanoparticles (NPs) as seeds and KI as growth modifier. Under polyvinylpyrrolidone (PVP) and potassium iodide (KI), small sized Au NPs evolved to plate-like nanostructures due to Ostwald ripening. The nanoplates served as templates for selectively growing Pt on {110} facets. Under high temperature, I− was oxidized to I2 by O2. The formed I2 and KI etched Au on {111}, generating hollow nanostructures. Through adjusting the reaction conditions, dendrite sphere-like nanostructures could also be prepared. The prepared bimetallic Au/Pt nanostructures exhibited high catalytic performance compared with sphere-like Pt.
研究领域:
材料科学
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纳米技术
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2022
·
IF 6.371
Taiping Hu,Pengfei Li,Wei Zhang,Yixing Ye,Jun Liu,Yunyu Cai,Guofeng Zhang,Kai Dai,Changhao Liang
Designing effective catalysts with high performance for electrocatalytic hydrogen production remains a formidable challenge. Small-size bimetallic alloy nanoparticles (NPs) with the advantages of a large exposure of effective active sites and optimal geometric/electronic effects are of great interest in the field of electrocatalysis , yet a suitable strategy for synthesizing such unique structures is still highly expected. In this effort, we report a unique approach to synthesizing ultra-small bimetallic PtM (M=Ni, Co) alloy NPs (∼ 1.7 nm) on carbon supports by laser irradiation in liquids. The method is based on the effective absorption of pulse laser energy by carbon supports to generate instant high temperature, which allows the reduction of metallic ions precursors by ethanol molecules and ensures the subsequent formation of alloy NPs. The fast-cooling dynamic process stops the further growth of small-sized alloy NPs. Such bimetallic PtNi alloy NPs displayed much improved catalytic performance in the HER process. The overpotential is only 19 mV and 42 mV (10 mA cm −2 ) in acidic and alkaline conditions, which is much lower than that of commercial 20 % Pt/C (36 mV, 53 mV) catalyst. Density function theory calculation shows that Ni doping facilitates the hydrogen adsorption/desorption process of nearby surface Pt atoms.
研究领域:
材料科学
·
电化学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Hongzheng Zhu,Beili Pang,Can Cui,Junyang Ma,Jianguang Feng,Hongzhou Dong,Liyan Yu,Lifeng Dong
In this study, we present an innovative interfacial engineering strategy to enhance the performance of lithium metal batteries by constructing a Li K bimetallic alloy anode formed in situ from a LiCl-KCl sacrificial layer. During initial charge-discharge cycles, the sacrificial layer transforms into a protective interphase that undergoes reversible deposition and decomposition. This in situ formation alleviates mechanical stress from lithium deposition, reduces local current density, and promotes uniform Li + deposition. Characterizations using X-ray photoelectron spectroscopy, electrochemical impedance spectroscopy, and cyclic voltammetry confirm a significant reduction in interfacial resistance, improved electrochemical reversibility, and excellent rate capability. Tested in Li||LFP cells, this approach achieves a high specific capacity of 175 mAh g −1 at 0.5C, retaining 154 mAh g −1 after 200 cycles, with an 11.4 to 13.5 % capacity improvement across various current densities (0.1–2C). In addition, Li||Li symmetric cells exhibit stable cycling for over 500 h at 0.1 mA cm −2 , demonstrating excellent interfacial stability and dendrite suppression. Experimental results demonstrate that this strategy markedly enhances cycling stability and safety, while its simplicity and adaptability offer valuable insights for interfacial design in high-performance lithium metal batteries.
研究领域:
电化学
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材料科学
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能源存储
·
固体离子学
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界面化学
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电池技术
✓ 已验证
产品关联
DOI
高影响因子
Chemistry-An Asian Journal
·
2020
·Vol. 16
·期 2
·165-173
·
IF 4.056
Ying Duan,Yangyang Ma,Yanfu Xie,Dongmi Li,Dongsheng Deng,Chi Zhang,Yanliang Yang
The reasonable control of the dispersion of noble metals is an important topic for heterogeneous catalysts. In this manuscript, PdCu/C, AuCu/C and PdAuCu/C were prepared by the galvanic reduction method to ensure that Pd and Au follow the distribution of Cu nanoparticles. The catalysts were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), energy-dispersive spectrometer elemental mappings and lines scans. Both the Pd and Au had very high dispersion no matter whether they were introduced individually or simultaneously. The Pd and Au were distributed mainly on the Cu nanoparticles as evidenced by the energy-dispersive spectrometer elemental mappings and lines scans. The reduction of 4-nitrophenol was used as a model reaction for the prepared catalysts. PdCu/C and AuCu/C showed high activity for this reaction compared to the literature, and the activity could be further increased by the introduction of Pd and Au in an appropriate ratio at the same time. The normalized reaction rate reached 2.005 s −1 mM −1 for the PdAuCu/C-2.0, in which the mole ratio of Pd to Au was 2.0.
研究领域:
材料科学
·
催化化学
✓ 已验证
DOI
高影响因子
Energy Storage Materials
·
2020
·
IF 16.28
Chuanliang Wei,Huifang Fei,Yuan Tian,Yongling An,Huanhuan Guo,Jinkui Feng,Yitai Qian
Li metal is regarded as the most promising anode for lithium-based batteries due to its extremely high theoretical capacity and the lowest working potential. However, dendrite caused by uneven Li deposition inhibits its practical application. Here we propose a new concept of utilizing amorphous metallic nucleation seeds to induce the uniform deposition of Li. Amorphous 3 °C liquid metal coated on MXene framework is selected as an example for deep investigation. The results indicate that amorphous liquid metal nucleation seeds are stable against MXene and can induce isotropic nucleation and uniform growth of Li. The Coulombic efficiency and performance of symmetric cells are obviously improved both in ether-based and carbonate-based electrolyte under the regulation of amorphous liquid metal seeds. Full lithium metal cells with LiFePO 4 and crumpled MXene nanosheet encapsulated LiMn 2 O 4 cathodes also exhibit better electrochemical performance after modification. Additionally, the concept may be useful for developing other metal based anodes.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Frontiers in Chemical Engineering
·
2021
·
IF 0
Li Guiliang,Liu Yang,Shen Yi,Fang Qile,Liu Fu
Two-dimensional (2D) metal–organic frameworks (MOFs) have emerged as intriguing 2D materials because of their specific features of 2D morphology and designable skeletons, which have elicited great interest in environment remediation. In this work, 2D MOF nanosheets are fabricated via a mixed-solvent solvothermal method, and a regulation strategy of metal inorganic clusters on MOFs is used to construct two different 2D MOFs with monometallic and bimetallic coordination, that is, Ni-MOF and Ni/Cd-MOF. Binary metal coordination renders more crystal defects and vacancies in the framework; thus, compared to monometallic Ni-MOF, bimetallic Ni/Cd-MOF exhibits fewer layers (4∼5 layers), higher specific surface area, larger pore size, and higher surface electronegativity, which leads to its excellent adsorption removal for Pb2+, with higher adsorption rate and affinity, and superior adsorption capacity (950.61 mg/g, almost twice as high as that of monometallic Ni-MOF). Besides, the adsorption mechanism further confirmed that the carboxyl groups (−COO−) from organic linker on 2D MOFs serve as the main binding sites for Pb2+ coordination, and bimetallic Ni/Cd-MOF has more active −COO− sites for Pb2+ capture. Thus, the bimetallic Ni/Cd-MOF regulated by heterogeneous metal atoms shows promising application for highly efficient adsorption of heavy metal ions.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2019
·
IF 14.229
Qiao Han,Mooeez Ur Rehman,Junhu Wang,Alexandre Rykov,Oliver Y. Gutiérrez,Yujun Zhao,Shengping Wang,Xinbin Ma,Johannes A. Lercher
The catalytic hydrodeoxygenation (HDO) of lignin-derived phenolic compounds is a critical step in the upgrading of bio-oil. Here, bimetallic Ni-Fe nanoparticles supported on mesoporous carbon spheres (MCSs) were fabricated and applied in HDO of phenol. In comparison with monometallic Ni and Fe catalysts, the bimetallic Ni-Fe catalyst exhibited better performance for phenol HDO due to the formation of Ni-Fe alloy phase identified by X-ray powder diffraction (XRD) and Mössbauer spectroscopy techniques. Among several explored ratios, the catalysts with Ni/Fe ratio of 3/1 presented the highest cyclohexane yield. The reaction occurred in two consecutive steps: the hydrogenation of phenol to cyclohexanol and the further hydrogenolysis of cyclohexanol to cyclohexane. Kinetic studies showed that the hydrogenolysis of cyclohexanol controlled the overall reaction rate of phenol HDO due to the lower reaction rate of this step. Indeed, the turnover frequency (TOF) values of cyclohexanol normalized by surface metallic Ni sites exhibited a linear correlation with Ni-Fe alloy sites. The alloying of iron in the bimetallic Ni-Fe catalysts significantly enhanced the adsorption strength of cyclohexanol, which is the reason of the high activity of the Ni-Fe alloy particles. Thus, Fe-containing sites adsorb the hydroxyl species while Ni sites perform the H 2 activation, their synergistic effect plays a key role in phenol HDO process.
研究领域:
催化化学
·
材料科学
·
能源化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）