ACS Biomaterials Science & Engineering
·
2023
·
IF 5.8
Ying Zhou,Min Tian,Ruichun Li,Yan Zhang,Guomei Zhang,Caihong Zhang,Shaomin Shuang
An electrochemical sensor applied for dopamine (DA) detection was constructed. An easy static way was used to synthesize bimetallic CoNi-MOF. Next, it was mixed with graphene oxide (GO) under ultrasound to get a uniform suspension. Subsequently, the solution was coated on the glassy carbon electrode (GCE) to form CoNi-MOF@ERGO/GCE by the electrochemical reduction method. The interaction between CoNi-MOF and electrochemically reduced graphene oxide (ERGO) enhances the electrocatalytic performance for DA detection. CoNi-MOF@ERGO/GCE has a wider linear range (0.1–400 μM) and a lower detection limit (0.086 μM) under optimum conditions. Furthermore, it has been applied to test DA in human serum samples. The results reveal that the DA sensor shows excellent performance, which will provide a novel idea for more sensitive and quicker DA detection.
研究领域:
生物化学
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材料科学
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分析化学
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DOI
PubMed
高影响因子
IONICS
·
2025
·
IF 2.6
Du Jia,Chen Lixuan,Wu Yiming,Wei Xin,Jia Jingyuan,Sun Kenan,Li Bingke
Nowadays, the advancement of eco-friendly, clean, sustainable and renewable new energy has emerged as a research priority for scientists worldwide. Electrolytic water technology is founded on the principle of electrochemical or photoelectric decomposition of water, is deemed as one of the most promising and most feasible approaches to reach industrial production. Traditional OER (oxygen evolution reaction) electrocatalysts like IrO 2 and RuO 2 are beset by high costs and vulnerability to poisoning. Hence, it is essential to develop more economical, more stable and more efficient materials for the application of OER reactions. In this study, a series of AQ-doped (AQ = anthraquinone) MOF-74 materials were fabricated through a one-step solvothermal approach. The surface loading of the conjugated organic small molecule AQ on CoNi-MOF-74 is capable of effectively boosting the inadequate electrical conductivity of the bulk MOF material, thus significantly enhancing the performance of OER. The optimized ratio of material composition of AQ20@MOF-74 displayed significantly enhanced OER activity. with a lower overpotential of 272 mV at 10 mA cm −2 and a smaller Tafel slope of 78 mV dec −1 . The research findings presented in this thesis provide a novel approach for the design and optimization of highly efficient OER electrocatalysts based on MOFs.
研究领域:
材料科学
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能源化学
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催化化学
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DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2023
·Vol. 30
·期 27
·70371-70385
·
IF 5.8
Li Jiayi,Yan Chumin,Sun Dedong,Ma Hongchao,Wang Guowen,Ma Chun,Hao Jun
In this work, Fe 3 O 4 /CoNi-MOF was synthesized by a simple solvothermal method. The catalytic performance of 0.2-Fe 3 O 4 /CoNi-MOF toward PMS activation was studied by degradation of 20 mg/L methylene blue (MB). The results indicated that 0.2-Fe 3 O 4 /CoNi-MOF had good catalytic ability, the removal rate of MB was 99.4% within 60 min with 125 mg/L PMS and 150 mg/L catalyst. Quenching experiment and electron paramagnetic resonance (EPR) analysis revealed that the singlet oxygen ( 1 O 2 ), superoxide radical (•O 2 − ) and sulfate radical (SO 4 •− ) played a crucial role in the catalytic degradation process. Meantime, mechanism of PMS activation by 0.2-Fe 3 O 4 /CoNi-MOF was proposed, the electrons donated by Fe 2+ can also enhance the Co–Ni cycles. In conclusion, Fe 3 O 4 /CoNi-MOF composite catalyst has the advantages of simple preparation, excellent catalytic activity and reusability, which is an effective catalyst for water pollution control.
研究领域:
环境化学
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催化
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纳米材料
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水处理
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化学工程
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Tian Zheng,Huanan Yu,Junhong Ruan,Haotuo Wang,Xiaopeng Shi,Jingji Zhang,Sina Chen,Xusheng Wang,Dongdong Xu,Ying Wang
Electromagnetic wave (EMW) absorption materials play a crucial role in mitigating electromagnetic pollution and advancing stealth technology. In this study, we construct ultralight CoNi-MOF@graphene heterostructure aerogel by integrating a trace amount of 1D rod-like CoNi-MOF with graphene. This ultralow doping strategy (4.5 wt%) integrates the anisotropic characteristics of 1D CoNi-MOF nanorods, the hierarchical porous structure derived from graphene, and the presence of heterogeneous interfaces, thereby enabling both impedance matching and multi-scale EMW attenuation. As a result, the CoNi-MOF@graphene aerogel demonstrates outstanding EMW absorption performance, achieving a minimum reflection loss of −42.62 dB and a broad effective absorption bandwidth of 4.20 GHz at a thickness of just 1.5 mm. This study offers valuable insights into the design of high-performance microwave absorbers and facilitates the development of novel functional materials.
研究领域:
材料科学
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电磁学
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纳米技术
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产品关联
DOI
高影响因子
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
·
2025
·
IF 4.6
Yuxia Zhang,Zitong Yang,Jingyu Deng,Yili Zhang,Hongzhen Li,Chen Li,Wenyuan Xu,Zhaohui Hou,Binbin Zhou
The current study aimed to present a molecularly imprinted electrochemical sensing platform for bisphenol A (BPA) detection by synergistically combining conductive RGO-PANI hybrids with porous CoNi-MOF. The RGO-PANI network facilitated electron transfer efficiency, while the porosity of CoNi-MOF enhanced molecular recognition capacity through expanded surface area and tailored recognition cavities. The conditions affecting the determination of BPA were also optimized. A linear increase of the current signal was observed in the concentration range of 1–500 nM BPA. The corresponding detection limit was calculated to be 0.36 nM. Selectivity tests showed good adsorption to BPA, which was attributed to the specificity of the MIP film. Practical validation recoveries of 95.12–103.18 % (RSD<3.6 %) were achieved in milk samples, demonstrating reliability in complex matrices. This study balanced sensitivity and cost-effectiveness compared to other sensors. This sensor provided a viable method for environmental and food safety monitoring.
研究领域:
电化学传感
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环境监测
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食品安全
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纳米材料
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分析化学
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Yu Zhou,Xinyu Song,Shenggang Yan,Chunhua Ni,Li Xu,Liangmin Yu,Xia Li
Biomass-derived carbon has attracted extensive attention because of its unique form, wide range of sources and low cost. However, the construction of efficient biomass-based microwave absorbers with hierarchical structures and multicomponent magnetic/dielectric structures remains a great challenge. Therefore, CoNi-MOF was self-assembled in situ on the plant Juncus effusus by the microwave method, and CoNi/NC/C composites were prepared by in situ pyrolysis in a nitrogen atmosphere. The morphology, electromagnetic parameters, specific surface area and porous structure of the composites were adjusted by controlling the pyrolysis temperature. For a pyrolysis temperature of 600 ℃ and filling of 16 wt%, the composite was found to show an RL min value of − 64.3 dB at 12.88 GHz at a thickness of 2.5 mm, and the effective absorption bandwidth (EAB)reached 7.36 GHz. The excellent microwave absorption performance was attributed to conduction loss, dipole polarization, interface polarization, magnetic loss and balanced impedance matching.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
ACS Omega
·
2022
·
IF 4.132
Yaxin Wang,Huimin Wang,Shuyuan Li,Shaorui Sun
Recycling waste PET plastics into metal–organic frameworks is conducive to both pollution alleviation and sustainable economic development. Herein, we have utilized waste PET plastic to synthesize CoNi-MOF applied to lithium battery anode materials via a low-temperature solvothermal method for the first time. The preparation process is effortless, and the sources’ conversion rate can reach almost 100%. In addition, the anode performance of MOFs with various Co/Ni mole ratios was investigated. The as-synthesized Co0.8Ni-MOF exhibits excellent crystallinity, purity, and electrochemical performance. The initial discharge and charge capacities are 2496 and 1729 mAh g–1, respectively. Even after 200 cycles, the Co0.8Ni-MOF electrode can exhibit a high Coulombic efficiency of over 99%. Consequently, given the environmental and economic benefits, the Co0.8Ni-MOF derived from waste PET plastic is thought to be an appealing anode material for lithium-ion batteries.
研究领域:
材料科学
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环境科学
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能源存储
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产品关联
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 6
·406
·
IF 5.4
Shi Zhuanzhuan,Gu Shuang,Wei Ruoyu,Li Jiahao,Wu Xiaoshuai
Superoxide anion (O 2 •− ) plays a crucial role in various biological processes. However, its excess can induce oxidative stress, cause cell damage, and promote diseases. Achieving ultra-sensitive detection of O 2 •− remains a significant challenge. Herein, a nanocomposite that integrates two-dimensional (2D) CoNi metal-organic framework nanosheets (CoNi-MOF) aerogel with carbon nanofibers (CNFs) through robust interfacial interactions was designed and fabricated. This CoNi-MOF@CNFs nanocomposite is tailored for high-performance electrochemical sensing of O 2 •− . The 2D CoNi-MOF features a rich mesoporous structure, which provides a multitude of reactive active sites. Meanwhile, CNFs effectively accelerate the electron transfer rate. The synergistic interfacial interactions between CoNi-MOF and CNFs enable efficient collaborative catalysis of O 2 •− , significantly enhancing the electrochemical catalytic ability compared to each component individually. The CoNi-MOF@CNFs-based sensor exhibits a high sensitivity (341.97 µA µM − 1 cm − 2 ), a low detection limit (0.83 nM), and excellent stability (2400 s). More importantly, this fabricated sensor enables real-time monitoring of O 2 •− released by living cells, demonstrating its potential for disease diagnosis, highlighting the critical role of interfacial engineering in boosting the sensing performance of electrochemical sensors. Graphical abstract The alternative text for this image may have been generated using AI.
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DOI
PubMed
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Zhiru Yang,Zi Yang,Wentao Hou,Hai Zhou,Hao He,Chao Jin
This study modifies the structure of bimetallic cobalt‑nickel metal-organic framework (CoNi-MOF) via a sulfur doping strategy to form a composite material (CoNi-MOF-S) and investigates the mechanism for enhancing its electrochemical performance as a supercapacitor electrode. Compared with undoped CoNi-MOF, the introduction of sulfur plays a dual role: on one hand, sulfur replaces partial elements in organic ligands to form metal‑sulfur covalent bonds, which enhance electron transport efficiency; on the other hand, it successfully induces the formation of cobalt sulfate and nickel sulfate crystalline phases. These newly generated crystal phases construct a stable framework within the nanostructure, effectively alleviating the volume expansion problem during charge-discharge processes. The synergistic effect between the two endows the material with excellent charge-discharge performance and cycling stability. Experimental results show that CoNi-MOF-S2 exhibits superior specific capacitance (701C/g at 0.5 A g −1 ) and cycling stability (capacity retention >85 % after 5000 cycles at 5 A g −1 ) in 6 M KOH electrolyte. Furthermore, a flexible quasi-solid-state supercapacitor with a sandwich structure is constructed using CoNi-MOF-S2 as the positive electrode, activated carbon (AC) as the negative electrode, and a gel electrolyte. This device achieves an energy density of 53.4 Wh kg −1 at a power density of 379.4 W kg −1 , maintains 76.9 % capacity after 5000 cycles at 5 A g −1 , and can operate normally during bending. Demonstrating the synergistic mechanism of crystalline phase reconstruction and electronic structure optimization, this study offers new insights to enhance the performance of CoNi-MOF for electrode materials.
研究领域:
材料科学
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电化学
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纳米技术
·
能量存储
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Yihua Lv,Jingyan Tian,Zebin Chen,Jianhao Wang,Li-An Ma,Lei Zhang,Song Chen,Qianting Wang,Xiaoyun Ye
The development of high-performance microwave-absorbing materials (MAMs) to address electromagnetic (EM) pollution has become a focus of attention for researchers. The combination of MXene and heterogeneous MOF with complementary advantages can be designed into novel composites with promising microwave absorption (MWA) properties. In this paper, the M/CoNi/C series composites derived from MXene/CoNi-MOF were prepared by in situ hydrothermal-pyrolysis process. The effects of the molar ratio of Co 2+ /Ni 2+ and the addition amount of MXene on the morphology and EM parameters of the composites were investigated, and then the MWA performance and mechanisms of M/CoNi/C composites were analyzed. The results showed that the uniformly distributed CoNi and graphitic carbon in the M/CoNi/C composites formed a core–shell structure, and TiO 2 nanoparticles modified on the carbon lamellas originated from MXene. The minimum reflection loss (RL min ) value of the optimized M/Co 1 Ni 1 /C reaches −61.34 dB only at the thickness of 1.9 mm, and the effective absorption bandwidth (EAB) value is 5.2 GHz only at 1.7 mm. The RL min values in the thickness range of 1.5–3.0 mm are all less than −30 dB. The tunable microstructures, multiple interfacial polarizations, and dielectric-magnetic synergies optimize the impedance matching, which is conducive to achieving good broadband EM wave absorption performance. This paper provides a reference strategy for the design and construction of a high-performance MXene-based microwave absorber with controllable morphology and electromagnetic parameters.
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DOI
高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Zexiang Liu,Ke He,Zhiguang Yang,Zijie Xu,Meiyu Li,Jinming Zhang,Chenxue Yao,Qianqian Chen,Xiaochen Li
Metal–organic framework (MOF)-derived materials show great potential as highly efficient and stable electrocatalysts for the oxygen evolution reaction (OER). However, conventional derivation strategies (such as high-temperature calcination and chemical etching) often require harsh reaction conditions and inevitably compromise the structural integrity of the material, thereby limiting their practical applicability. To address this challenge, this study presents an innovative room-temperature dielectric barrier discharge (DBD) plasma surface engineering approach that enables the precise activation of CoNi-MOF-74 catalysts at room temperature. After DBD treatment, the surface of NF/PMOF is etched, generating cracks and exposing the nanoporous structure of the internal framework. Remarkably, through merely 5 min of DBD surface treatment, the resulting catalyst NF/PMOF5 achieves an ultralow overpotential of 173 mV at a current density of 10 mA cm–2 and a Tafel slope of 43 mV·dec–1, demonstrating a remarkable improvement compared to the untreated sample (307 mV, 109.5 mV·dec–1). The catalyst also exhibits outstanding stability, with minimal potential shift (<20 mV) after 4000 cycles. Detailed characterization reveals that the DBD treatment maintains the crystalline integrity of MOF-74 while simultaneously optimizing the electronic structure and generating high-density surface CoNi-oxide nanoclusters, which significantly enhance the OER kinetics. Owing to its green and mild treatment conditions, this noncarbonization activation strategy not only provides more options for MOF catalyst design but also demonstrates advantages in the processing of flexible electronic devices.
研究领域:
材料科学
·
电化学
·
等离子体物理
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纳米技术
·
能量存储与转换
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Tong Wu,Fang Ren,Zhengzheng Guo,Jiale Zhang,Xin Hou,Zhengyan Chen,Yanling Jin,Penggang Ren
The flourishing development of electronic devices and radar detection technologies necessitates the urgent creation of high-efficiency electromagnetic wave (EMW) absorption materials with expansive absorption bandwidths. Although MXene has garnered significant interest in the domain of EMW absorption due to its tunable dielectric properties and structural designability, its high permittivity often results in poor impedance matching and a single loss mechanism, which makes it difficult to realize optimal EMW absorption capabilities. In this work, CoNi bimetallic metal–organic frameworks (MOFs) derived bayberry-like magnetic porous carbon (CoNiMPC)@carbon nanotubes (CNTs)/MXene (CNCM) hybrids were initially synthesized via simple solution precipitation, thermal treatment, and electrostatic self-assembly strategy. As anticipated, excellent EMW absorption characteristics were achieved by adjusting the ratio of CoNiMPC@CNTs and MXene. Multi-heterointerfaces consisting of zero-dimensional porous carbon , one-dimensional carbon nanotubes, and two-dimensional (2D) MXene, electrical/magnetic coupling effects, and polarization loss induced by abundant heterointerfaces endow the prepared CNCM hybrids with high-performance EMW absorption. Notably, the CNCM-7 hybrid material exhibits a minimum reflection loss (RL min ) of − 65.3 dB at 6.8 GHz with a mere 2.7 mm thickness and an effective absorption bandwidth (EAB, RL < −10 dB) of 5.0 GHz at a thickness of 1.27 mm. This study proposes a unique viewpoint and approach towards the design and preparing high-performance MXene-based EMW absorption materials.
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DOI
高影响因子
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