Molecular Catalysis
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2023
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IF 4.6
Lihai Wei,Dexing Meng,Junhan Mao,Qianqian Jiang,Huabo Huang,Jianguo Tang
Oxygen Evolution Reaction (OER) catalysts that overcome low energy barriers to improve the reaction efficiency of the OER are important for the development of future green energy sources. Herein, NiFe-PBA@IF layered nanoflowers were successfully prepared by etching iron foam (IF) using Prussian blue-like (PBA) material as a precursor. Notably, the fractured PBA nanosheets prepared by etching at room temperature had a suitable growth gradient and growth environment with the homogeneous nucleation environment, compared to the conventional method. In this environment, a layered NiFe-PBA structure can be formed on the surface of IF, enabling efficient green synthesis, reducing ecological and economic costs, and providing a clear source of catalytic activity. More importantly, NiFe-PBA@IF has a nanoparticle structure anchored on NiFe-PBA stacked nanoflowers, which can expand the surface roughness and electrochemical active area of the sample, so the OER performance in 1 M KOH is 253 mV@10 mA·cm −2 . The green and direct synthesis of PBA electrocatalysts can provide new ideas for the efficient synthesis of other OER electrocatalysts at room temperature and will further provide an effective template for the industrial application of OER electrocatalysts.
研究领域:
材料科学
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电化学
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能源科学
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产品关联
DOI
高影响因子
Analytical Methods
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2024
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IF 2.7
Xin Hua,Tongxiao Zhao,Xueqin Gui,Baokang Jin
In this paper, a label-free electrochemical immunosensor for sensitive detection of prostate antigen (PSA) was developed based on a NiFe PBA/AuNPs composite. The prostate antigen antibody was immobilized and the immunosensor was constructed by using a glassy carbon electrode modified with a nanocomposite consisting of nickel–iron Prussian blue analog (NiFe PBA) and gold nanoparticles (AuNPs). Due to the good biological affinity of AuNPs for biomolecules, as well as the porous nanostructure and regular shape of NiFe PBA, NiFe PBA/AuNPs nanocomposites significantly improve the electron transport rate, while achieving excellent performance for the sensor. Due to the interaction between the antibody and the antigen on the modified electrode, the current signal of the NiFe PBA itself is reduced due to the redox changes in Fe2+ and Fe3+, which can be determined by differential pulse voltammetry (DPV). Therefore, the monitoring of prostate antigen detection is realized. Under optimal experimental conditions, the immunosensor exhibited excellent detection performance with a dynamic response range from 0.5 pg mL−1 to 1000 pg mL−1 for the PSA concentration and a detection limit of 0.23 pg mL−1 (S/N = 3). In addition, the PSA aptasensor has good selectivity, high stability, and satisfactory reproducibility and has broad potential in clinical research and diagnostic applications.
研究领域:
生物医学工程
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分析化学
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纳米技术
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
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2026
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IF 8.4
Ke Fan,Tongxue Zhang,Shuai Liu,Wenting Cai,Nini Zhao,Xubin Zhang,Fumin Wang
The development of efficient and stable catalysts is key for alkaline water/seawater electrolysis. Herein, we report a cubic-structured NiFePBA@NiSe 2 catalyst. In 1 M KOH, it requires an overpotential of only 278 mV to reach 300 mA cm −2 with a Tafel slope of 33.5 mV dec −1 . It also shows outstanding oxygen evolution reaction (OER) performance in alkaline simulated seawater (1 M KOH + 0.5 M NaCl) and natural seawater (1 M KOH + seawater). Experimental and characterization results reveal that highly active Ni(Fe)OOH species form in situ on the catalyst surface during OER. The introduction of NiSe 2 not only facilitates electron transfer and phase transformation, but the resulting selenate (SeO 4 2− ) species effectively repel chloride ions, which is particularly beneficial for stable seawater electrolysis. Benefiting from these structural advantages, the catalyst exhibits remarkable stability of 1000 h at 500 mA cm −2 in alkaline seawater. Furthermore, two-electrode electrolyzer and membrane electrode assembly tests using this material as the anode in alkaline seawater confirm its practical application potential. This work provides a new route for designing high-performance bifunctional electrocatalysts based on interface engineering and surface reconstruction.
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产品关联
DOI
高影响因子
FOOD CHEMISTRY
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2024
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IF 8.5
Suhui Xu,Tianhao Zhou,Jiamin Wang,Ge Guo,Zhiyan Chen,Huaxiang Li,Zhenquan Yang,Yajun Gao
Deoxynivalenol (DON) contamination in food products significantly threatens human health, necessitating a reliable and sensitive detection method. This study aims to develop a simple, low-cost, and effective electrochemical immunoassay method for detecting DON based on the nickel‑iron bimetallic Prussian blue analog (Ni Fe PBA). The Ni Fe PBA nanozymes with high peroxidase-like activity were synthesized using an environmentally friendly chemical precipitation method. In the presence of hydrogen peroxide (H 2 O 2 ), the current change of thionine oxidation initiated by Ni Fe PBA nanozymes can be exploited to diagnose DON. Under optimal conditions, the proposed method achieved quantitative detection of DON in the range of 10–10 7 pg mL −1 with a detection limit of 4.5 pg mL −1 (S/N = 3), demonstrating excellent selectivity, reproducibility, and stability. In addition, the DON immunosensor provides satisfactory results for the detection in real samples, demonstrating the feasibility of the proposed sensor in detecting of DON in such products.
研究领域:
食品安全
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分析化学
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生物传感
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产品关联
DOI
PubMed
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
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2026
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IF 5.7
Yi Li,Yong Tang,Yujing Wang,Junyin Chen,Chun Huang,Jianwei Zhao,Lirong Qin
In this study, a single-crystalline NiFe-PBA film was first electrodeposited onto a nickel foam substrate, followed by a secondary electrodeposition step to grow NiFe-LDH nanosheets on the film. This composite structure facilitates electron transfer from NiFe-LDH to NiFe-PBA, thereby enhancing the electrical conductivity of the electrode material. Meanwhile, the high specific surface area of NiFe-LDH nanosheets provides more active sites. As a result, the fabricated aqueous zinc-ion battery achieves a specific capacity of 133.5 mAh/g at a current density of 0.3 A/g. In addition, the capacitance contribution of the NiFe-PBA electrode material was only 6%, while that of the NiFe-PBA@NiFe-LDH electrode material increased to 18% at a sweep rate of 10 mV/s. These findings demonstrate that the NiFe-PBA@NiFe-LDH composite is a promising cathode material for aqueous zinc-ion batteries, offering a novel strategy for the development of high-performance cathodes in this field.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2021
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IF 13.273
Xiaojing Lin,Shoufu Cao,Hongyu Chen,Xiaodong Chen,Zhaojie Wang,Sainan Zhou,Hui Xu,Siyuan Liu,Shuxian Wei,Xiaoqing Lu
Rational interfacial structure with excellent charge transfer and exposure of numerous active sites plays vital roles in heterogeneous catalysis. Herein, a hierarchical spongy electrocatalyst with active NiFe Prussian blue analogues and nickel carbides interface (NiFe-PBA/Ni 3 C(B)) is proposed and fabricated by a borate-assisted strategy. The unique structure and matchable interface benefit from the desorption of borate ligands in-situ during the pyrolysis and carbonization process. The optimal electrocatalyst composing of metal–organic framework (NiFe prussian blue analogues) in conjunction with a metallic transition carbide phase (nickel carbide) exhibits an ultra-low overpotential of only 196 mV at 10 mA cm −2 and a small Tafel slope of 30.1 mV dec -1 for OER in KOH. The robust water oxidation performance can be ascribed to the abundant adsorption sites and effective interfacial interaction. In addition, computational simulations further confirm that NiFe-PBA/Ni 3 C(B) is favorable for OER since the optimized electronic distribution and metal-3d orbitals interact around Fermi level at the interface. This research provides a new insight into rationally designing efficient electrocatalysts via morphology engineering and integrating different functional phase with complementary advantages for catalysis application.
研究领域:
电化学
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材料科学
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催化
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产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
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2026
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IF 5.8
Ying Zhang,Guoliang Zu,Han Sun,Zhenchao Li,Serge Cosnier,Aihua Liu
NiFe PBA exhibits laccase-mimic for ORR and electrocatalyze oxidation of CC and HQ. • A self-powered sensor by assembling NiFe PBA as both anode and cathode catalyst. • The sensor capable of detecting CC or HQ in simulated wastewater satisfactorily. Biofuel cells are widely applied in designing self-powered sensors (SPS) due to their rich fuel source, environmental friendliness, and advantages in operating under neutral pH and room temperatures. However, they are limited by inherent drawbacks of biological enzymes as catalysts, such as poor stability and high costs, greatly restricting their real applications. Herein we report on NiFe Prussian blue analogue (PBA) nanocubes with good mimicking laccase activity, which can not only exhibit excellent oxygen reduction reaction in the absence of electron mediators, but also efficiently electrocatalyze the oxidation of phenolic fuels. Subsequently, a dual-chamber enzyme-free fuel cell was constructed using NiFe PBA as both the anode and cathode catalysts as well as catechol (CC)/hydroquinone (HQ) as the fuel. Based on this, a SPS was developed to detect CC or HQ. The maximum power density ( P max ) of the HQ-fueled sensor is linear within 0.5 μM–5 mM HQ in three parts. Similarly, the P max for CC-fueled sensor is linear with 5 μM–5 mM CC in three parts. Moreover, the sensor has excellent selectivity and is capable of monitoring simulated wastewater. Thus, this work demonstrates an efficient enzyme-free biofuel cells based SPS using the same nanomaterial as anode and cathode catalyst. Download: Download high-res image (271KB) Download: Download full-size image
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Kaiyuan Shen,Yu Tang,Qihang Zhou,Ying Zhang,Wen Ge,Xuxia Shai,Shuping Deng,Peizhi Yang,Shukang Deng,Jinsong Wang
Development of economical and high-efficient catalytic electrodes is a top priority for oxygen evolution reactions (OER). Non-precious metal based metal–organic frameworks (MOFs) in powder form remain a series of problems including the assistance of adhesive, poor conductivity and stability. Herein, a well-designed S-NiFe PBA@NiFe/NF composite with a unique Mott-Schottky heterojunction architecture was purposefully constructed by self-sacrificing template approach and electrodeposition. The growth of S-NiFe PBA@NiFe on NF through in situ synthesis promotes efficient electron conduction between the NF substrate and S-NiFe PBA@NiFe catalyst, leading to a stable and highly effective working state. The Mott-Schottky heterojunctions between S-NiFe PBA and NiFe-layered double hydroxides (LDH) effectively expedite electronic transmission. Consequently, S-NiFe PBA@NiFe/NF exhibits outstanding OER behavior at 1.0 M KOH, exhibiting a low Tafel slope of 39 mV dec −1 and at 10 mA cm −2 , reaching an unexpectedly low overpotential of 196.7 mV. Furthermore, the S-NiFe PBA@NiFe/NF maintains long-term durability without evident performance degradation for 100 h.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Yan Huang,Daixin Ye,Jing Yang,Huan Lu,Li Li,Yaping Ding
Herein, based on the dual-signal strategy, an electrochemical sensor with molecularly imprinted polymer (MIP) was designed for the analysis of p-Hydroxyacetophenone (p-HAP) for the first time. The sensor was fabricated by modifying the electrode with NiFe prussian blue analogue (NiFe-PBA) and followed by SnS 2 , obtaining the dual-signal from [Fe(CN) 6 ] 3−/4− at 0.20 V and NiFe-PBA at 0.52 V. In the electropolymerization of the MIP film, o-phenylenediamine was used as functional monomer and p-HAP acted as template molecule. After the adsorption of p-HAP, the two above oxidation peak currents decreased simultaneously compared with the elution, achieving the dual-signal analysis. Under the optimal conditions, the sensor exhibited a wide linear range of 10 −13 M to 10 −7 M and a low detection limit of 3.52 × 10 −14 M (3σ). Moreover, it was successfully applied to the p-HAP detection in human serum and environment water samples with satisfactory recovery.
研究领域:
分析化学
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电化学
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环境科学
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材料科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）