TALANTA
·
2017
·
IF 4.162
Shiqiang Cui,Shuqing Gu,Yaping Ding,Jiangjiang Zhang,Zhen Zhang,Zongqian Hu
Hollow mesoporous CuCo 2 O 4 (meso-CuCo 2 O 4 ) microspheres were successfully synthesized by decomposing metal-organic frameworks (MOFs) as the template. The as-prepared CuCo 2 O 4 microspheres were first simultaneously used for H 2 O 2 biosensing and glucose biofuel cell (GFC) as the enzyme mimic . The resulting of meso-CuCo 2 O 4 displayed not only excellent catalytic performances to H 2 O 2 including a super-fast response time (within 2 s), a super-high sensitivity (654.23 μA mM −1 cm −2 ) and a super-low detection limit (3 nM at S/N = 3) on the sensor, but also great values in GFC as anode material with an open circuit voltage of 0.85 V, a maximum power density of 0.33 mWcm −2 and a limiting current density of 1.27 mAcm −2 , respectively. The preeminent catalytic abilities to H 2 O 2 and glucose may be attributed to the surpassing intrinsic catalytic activity of CuCo 2 O 4 and large specific area of mesoporous structure. These significant findings deriving from this work not only provided a novel exploration for the fabrication of hollow spherical mesoporous bimetallic oxides, but also promoted the development of the supersensitive detection of H 2 O 2 and non-enzymatic biofuel cell.
研究领域:
材料科学
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生物传感
·
电化学能源
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Jinyuan Zhang,Long Cao,Jianxin Liu,Yawen Wang,Rui Li,Xiaochao Zhang,Yunfang Wang,Caimei Fan
In general, sulfite activation systems follow a radical generation pathway and non-radical pathways are rare. Different from previous sulfite activation through reactive oxygen species (ROS) pathways, CuCo 2 O 4 -O v rich in oxygen vacancies prepared by simple NaBH 4 treatment can removal ciprofloxacin (CIP) by singlet oxygen ( 1 O 2 ) non-radical pathway and its dominant role proved by the quenching experiments, showing outstanding catalytic performance over a wide pH range. In addition, 1 O 2 has been identified to originate from: SO 5 •- , SO 4 •- , and O 2 •- . The interaction of the presence of O v on the sulfite activation of CuCo 2 O 4 was investigated through a density functional theory (DFT) calculation, electrochemical analysis and XPS. The results indicate that O v can regulate the charge distribution, facilitating electron transfer between the catalyst and sulfite, and enhancing the adsorption and activation of sulfite. Notably, the selectivity of 1 O 2 generation is influenced by O v . The possible degradation pathways of CuCo 2 O 4 -O v were analyzed using liquid chromatography-mass spectrometry (LC-MS), and the toxicity of CIP and its intermediates was assessed using ECOSAR software. Finally, experiments confirmed that CuCo 2 O 4 -O v exhibits good universality and reusability. It is the synergistic activation of sulfite and degradation CIP by singlet oxygen non-free radical pathway by CuCo 2 O 4 catalyst and oxygen vacancy that will provide a new perspective for the activation of sulfite and has good reference value.
研究领域:
环境科学
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材料科学
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催化化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2025
·
IF 5.5
Lu Wang,Qingqing Li,Bin Luo
Bimetallic oxide CuCo2O4 has captured widespread interest in the application of supercapacitors in light of its outstanding conductivity and electrochemical activity. Structural optimization is crucial for increasing the electroactive sites and accelerating the surface chemical reactions to enhance the capacitance and longevity for supercapacitors. In this study, a CuCo2O4@NiCo-layered double hydroxide heterostructure (CCO@NC-LDH) is constructed in situ on nickel foam via a hydrothermal-assisted electrodeposition strategy. CCO@NC-LDH nanorods offer a large specific surface area, rich redox reaction sites, and effective interface charge mobility through tight interfacial connections between the interface. These properties address the inherent limitations of traditional electrodes, leading to the superior specific capacitance along with outstanding cycling durability. Thanks to the high utilization of abundant electroactive sites, the optimized CCO@NC-LDH shows an impressively high specific capacitance of 4824.3 F g–1 at 1 A g–1, significantly outperforming standalone CCO and NC-LDH electrodes. Besides, the density functional theory (DFT) calculations give a rational interpretation for the heightened conductivity and accelerated charge migration dynamics at the heterointerface between CCO and NC-LDH. The asymmetric supercapacitor based on CCO@NC-LDH shows a remarkable energy density of 65.6 Wh kg–1 at a power density of 750.0 W kg–1 and a remarkable sustained stability. Furthermore, the fabricated supercapacitor successfully powers LED lights continuously, showcasing its practical application potential. These excellent performances highlight the immense promise of heterostructured nanomaterials in advanced energy storage applications.
研究领域:
材料科学
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电化学
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纳米技术
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能量存储
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Jianhua Zheng,Xueyan Liu,Lei Zhang
Hollow double-shell Cu 2 O@CuCo 2 O 4 (HDS-Cu 2 O@CuCo 2 O 4 ) Z-Scheme photocatalyst with a porous structure was designed and successfully synthesized by anchoring Cu 2 O nanoparticles (NPs) on the surface of CuCo 2 O 4 hollow spheres in situ. HDS-Cu 2 O@CuCo 2 O 4 exhibited remarkable photocatalytic activity towards chlorotetracycline (CTC) oxidation and nitrobenzene (NB) reduction under visible light irradiation. Total organic carbon (TOC) removal of 63% was achieved over HDS-Cu 2 O@CuCo 2 O 4 for CTC degradation, which is 1.7 and 2.1 times higher than that of pristine Cu 2 O and CuCo 2 O 4 . Moreover, the photocatalytic activity for both oxidation and reduction were simultaneously improved in CTC + NB mixed system owing to the presence of the synergistic photocatalytic effect. The superior photocatalytic performance of HDS-Cu 2 O@CuCo 2 O 4 hybrid system should be mainly attributed to the unique hollow structure as well as the Z-scheme charge transfer pathway, which not only improve the utilization of visible light but also enhance the separation efficiency of photoexcited charge carriers. The proposed strategy provides an insight into the application of hollow Z-Scheme photocatalyst in environmental remediation.
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
高影响因子
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
·
2018
·Vol. 2018
·期 31
·3565-3569
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IF 2.507
Xiangjiang Zheng,Jiayu Zhang,Zhaomei Sun,Zhen Zhang,Dongmei Xi
Graphical We realized in-situ fabrication of amorphous Cu–Co–P nanofilms on CuCo 2 O 4 nanoarrays by cathodic electrochemical reduction to efficiently catalyze the hydrogen evolution reaction (HER) in alkaline solution. The catalyst needs an overpotential of only 104 mV at 20 mA cm –2 in 1.0 m KOH and presents good durability for at least 24 h. We demonstrate an efficient in-situ method to fabricate amorphous Cu–Co–P nanofilms on CuCo 2 O 4 nanoarrays by cathodic electrochemical reduction. These are used to catalyze the hydrogen evolution reaction (HER) in alkaline solution. The catalyst needs an overpotential of only 104 mV in 1.0 m KOH when the current density is 20 mA cm –2 . More importantly, it has good durability for at least 24 h. This method provides an effective approach to develop a nonprecious metal catalyst for industrial hydrogen evolution.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Yan Xue,Hongyu Li,Tao Wu,Hui Zhao,Yan Gao,Xixi Zhu,Qingyun Liu
Detecting of sulfur ions (S 2- ) in environment is critical to human health. In this work, a fast and convenient colorimetric sensing platform for S 2- was developed. In detail, Pt deposited on sea urchin-like CuCo 2 O 4 nanostructures (Pt/CuCo 2 O 4 ) was synthesized and demonstrated to possess enhanced peroxidase-like performance, similar to the natural horseradish peroxidase (HRP). Pt/CuCo 2 O 4 can catalyze colorless 3, 3, 5, 5-Tetramethylbenzidine (TMB) to be oxidized by H 2 O 2 into a blue product (oxTMB). When the above system encounters sulfur ions (S 2- ), the peroxidase-like activity of Pt/CuCo 2 O 4 is inhibited, accompanied with the color change of reaction solutions. On this basis, a colorimetric sensing platform for S 2- can be established. Kinetic experiments verified Pt/CuCo 2 O 4 possessed a higher affinity with substrate than that of HPR. The excellent peroxidase-like performance of Pt/CuCo 2 O 4 was attributed to two active species including hydroxyl radical (•OH) and superoxide radical (•O 2 - ) in the catalytic process. The linear range of the proposed sensing platform for S 2- was 0.5–10 μM as well as the low limit of detection is 85.9 nM, much lower than the World Health Organization regulations. The sensing platform had been successfully applied to the detection of S 2- in tap water and lake water, which provided a convenient method for detecting S 2- in wastewater.
研究领域:
材料科学
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环境科学
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生物化学
✓ 已验证
产品关联
DOI
高影响因子
CATALYSIS COMMUNICATIONS
·
2021
·
IF 3.626
Jianan Li,Wenbo Sun,Xinyong Li,Hangfan Ma,Yaxuan Li,Chong Peng
Photocatalysis is an effective means to convert CO 2 and solar energy into high value-added chemicals. Herein, the surface gradient S doped CuCo 2 O 4 microflowers were fabricated by an in situ topotactic engineering strategy. This photocatalyst presented CO 2 photoreduction with a satisfying activity (5 h, 181 μmol) and stability (94.5% retention). Additionally, the theoretical calculations indicated the fomated M-S bond could be favorbale to facilitate the initial CO 2 ⁎ binding and promote the formation of COOH ⁎ intermediates. This work provides a novel strategy for the fabrication of effective photocatalysts and highlights an in-depth understanding of micro-level regulation towards photocatalytic overall performance.
研究领域:
材料科学
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化学
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环境科学
·
纳米技术
✓ 已验证
DOI
高影响因子
Journal of Energy Storage
·
2021
·
IF 6.583
Xiaobo Chen,Wei Wang,Xin Pan,Chengqun Qiu
Hierarchical core-shell nanowire arrays with a shell of CuCo 2 O 4 nanosheets and a core of MnCo 2 O 4 nanowires directly coated on the conductive carbon cloth (CC) are rationally designed and synthesized via a facile hydrothermal route with a post low-temperature thermal treatment in air. The binder-free MnCo 2 O 4 @CuCo 2 O 4 /CC composite material exhibits an enhanced performance (1241.0 C g −1 at 1 A g −1 ) compared with the MnCo 2 O 4 /CC (832.7 C g −1 at 1 A g −1 ) and CuCo 2 O 4 /CC (734.1 C g −1 at 1 A g −1 ). In addition, the MnCo 2 O 4 @CuCo 2 O 4 /CC electrode is assembled into a flexible all-solid-state asymmetric supercapacitor (ASC), which delivers a maximum specific energy of 62.0 Wh kg −1 at a specific power of 747.2 W kg −1 with 91.2% capacity retention after 10000 charge–discharge cycles at 8 A g −1 . And the ASC device also exhibits 91.7% capacity retention at floating time over 200 h at 8 A g −1 . Further, the MnCo 2 O 4 @CuCo 2 O 4 //AC device shows superior flexible performance while bending at various angles. These results make this MnCo 2 O 4 @CuCo 2 O 4 core/shell composite to be a good candidate for flexible all-solid-state electrochemical capacitors applications.
研究领域:
材料科学
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电化学
·
能源存储
✓ 已验证
DOI
高影响因子
MICROCHIMICA ACTA
·
2021
·Vol. 188
·期 5
·1-11
·
IF 5.833
He Yanlei,Li Ning,Liu Xiangwei,Chen Wei,Zhu Xixi,Liu Qingyun
Urchin-like peroxidase mimics 5,10,15,20-tetrakis (4-carboxyl phenyl) porphyrin–functionalized CuCo 2 O 4 nanospheres (Por-CuCo 2 O 4 ) has been fabricated as an excellent visual biosensor. X-ray diffractometry (XRD), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS) have been employed to characterize the composition, morphologies, and elemental analysis of the as-synthesized Por-CuCo 2 O 4 . The catalytic activity of Por-CuCo 2 O 4 was evaluated by the chromogenic substrate 3,3′,5,5′-tetramethylbenzidine (TMB) with the aid of H 2 O 2 , which exhibited a visual blue change with an absorption maximum at 652 nm for only 10 s. The peroxidase-like behaviors of Por-CuCo 2 O 4 conformed to the Michaelis-Menten equation. Electrochemistry, radical scavenger, and fluorescence probe experiments verified that electron transfer, •O 2 − radicals, and holes (h + ) are the important factors during the catalytic oxidation of TMB. Based on the inhibition of dopamine (DA) on TMB oxidation, the Por-CuCo 2 O 4 -based colorimetric biosensor has been successfully constructed for sensitive determination of DA witha detection limit (LOD) of 0.94 μΜ. In addition, colorimetry was validated to detect DA in serum samples with high sensitivity and good selectivity. Graphical abstract
5,10,15,20-tetrakis (4-carboxyl phenyl) porphyrin–functionalized urchin-like CuCo 2 O 4 (Por-CuCo 2 O 4 ) with excellent peroxidase activity, ascribed to the synergistic effect between •O 2 − radicals and holes (h + ). A fast colorimetric sensor on the basis of Por-CuCo 2 O 4 has been constructed to quantitatively determine dopamine concentration in human serums.
研究领域:
纳米技术
·
生物传感器
·
分析化学
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材料科学
·
生物化学
✓ 已验证
DOI
高影响因子
Sustainable Energy & Fuels
·
2022
·Vol. 7
·期 1
·310-318
·
IF 6.813
Hongliang Yu,Jianzhi Wang,Tong Xu,Ningbo Yu,Li Wu,Siming Chen,Ning Cai,Yanan Xue,Hui Li,Faquan Yu
The fabrication of low-cost and high-performance electrocatalysts is essential for water splitting to achieve a sustainable oxygen evolution reaction. In this work, spinel oxides (CuCo2O4 and Co3O4) are mounted on nickel foam (NF) to form chrysanthemum-like hybrid crystal structures assembled from nanowires. The as-synthesized CuCo2O4–Co3O4/NF shows a high surface area, a large number of mesoporous structures and excellent charge transfer channels, which is conducive to the generation and overflow of O2. And the synergistic effect, as well as the transfer of electron density between CuCo2O4 and Co3O4, contributes to the enhancement of OER activity. As a result, CuCo2O4–Co3O4/NF exhibits excellent OER performance with an overpotential of only 267 mV at 10 mA cm−2, a low Tafel slope (114.6 mV dec−1) and excellent stability with a scarce loss of the initial catalyst activity over 24 h under alkaline conditions. This work provides an effective method to show higher catalytic activity by combining two spinel oxides.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2024
·Vol. 16
·期 29
·14057-14065
·
IF 5.8
Ruixue Zhang,Jing Wang,Qiyan Sun,Fuyuan Cao,Guang-Rui Xu,Yu Miao,Chuanfang Zhang,Zexing Wu,Lei Wang
As a technology for emerging environmental applications, water electrolysis is a significant approach for producing clean hydrogen energy. In this work, we used an efficacious piezoelectric method to significantly improve the catalytic water splitting activity without affecting the morphology as well as the components by altering the bulk charge separation state inside the material. The obtained CuCo2O4 nanorods were treated under a corona polarization apparatus, which significantly enhanced ferroelectricity relative to that before the polarization increasing the physical charge separation and piezoelectric potential energy, enhancing the green hydrogen production. The polarized CuCo2O4 nanorods exhibit excellent water electrolysis performance under alkaline conditions, with hydrogen evolution overpotential of 78.7 mV and oxygen evolution overpotential of 299 mV at 10 mA cm−2, which is much better than that of unpolarized CuCo2O4 nanorods. Moreover, the Tafel slopes of polarized CuCo2O4 nanorods are 86.9 mV dec−1 in the HER process and 73.1 mV dec−1 in the OER process, which are much lower than commercial catalysts of Pt/C (88.0 mV dec−1 for HER) or RuO2 (78.5 mV dec−1 for OER), proving faster kinetic on polarized CuCo2O4 nanorods due to their higher electroconductibility and intrinsic activity. In particular, polarized CuCo2O4 nanorods are identified as promising catalysts for water electrolysis with robust stability, offering outstanding catalytic performance and excellent energy efficiency.
研究领域:
材料科学
·
能源技术
·
催化化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
Huanran Cai,Yuan Liu,Yan Wang,Jiaxin Li,Jimmy Yun,Dapeng Cao,Shi Nee Lou
CuCo 2 O 4 coupled benzylamine oxidation and H₂ evolution with ∼100% efficiency. • Cu accelerates reconstruction, boosts electron transfer, and stabilizes intermediates. • CuCoOOH formation at low potentials promotes dehydrogenation and C N formation. • Surface reconstruction in CuCo 2 O 4 boosts nitrile selectivity and H 2 production. Electrochemical hydrogen production offers a scalable, low-carbon route for clean energy, but its efficiency is constrained by the high energy demand and sluggish kinetics of the oxygen evolution reaction (OER). Replacing OER with anodic oxidation of organic molecules provides a promising approach to reduce energy input while producing value-added chemicals. Here, we demonstrate spinel CuCo 2 O 4 as an efficient electrocatalyst for the selective oxidation of benzylamine to benzonitrile, coupled with hydrogen evolution. CuCo 2 O 4 achieves nearly 100% Faradaic efficiency for both reactions at low potentials (1.35–1.45 V vs RHE), with a maximum benzonitrile yield of 97%, whereas conventional water electrolysis under similar conditions produces negligible hydrogen. By integrating in-situ Raman spectroscopy with density functional theory, we reveal a potential-dependent surface reconstruction mechanism. Specifically, Cu incorporation directs electron transfer from Co to Cu, promoting the formation of a CuCoOOH active phase that enhances benzylamine adsorption and lowers the energy barriers for C–H and N–H dehydrogenation, thereby facilitating C N formation. At higher potentials, however, the formation of Co 4 + -rich phase induces competitive OER, underscoring the critical role of controlling surface phase evolution. Overall, these findings establish a reconstruction-enabled strategy to tailor spinel composition and surface chemistry, positioning CuCo 2 O 4 as a transformative platform for selective organic oxidation coupled with energy-efficient hydrogen production. Download: Download high-res image (187KB) Download: Download full-size image Selective electrocatalytic oxidation of benzylamine to benzonitrile coupled with hydrogen evolution over CuCo 2 O 4 via in situ formation of CuCoOOH active phase
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DOI
高影响因子
危险品化学品经营许可证（带存储）