BIOELECTROCHEMISTRY
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2024
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IF 4.8
Xiaoying Cui,Lina Lv,Ke Zhao,Panpan Tian,Xipeng Chao,Ying Li,Baozhong Zhang
Overuse of enrofloxacin (ENR) has posed a potential threat to ecosystems and public health, so it is critical to sensitive and accurate determination of ENR residues. In this work, a novel ultra-sensitive and specific electrochemical aptasensor was fabricated based on the cobalt diselenide loaded gold and platinum nanoflowers (Au@Pt NFs/ CoSe 2 ) and Exonuclease III (Exo III)-assisted cycle amplification strategy for the detection of ENR. Au@Pt NFs/ CoSe 2 nanosheets as the substrate material, with large surface area, accelerate electron transfer and attach more DNA probes on the electrode substrate, have effectively enhanced the electrochemical performance of the electrode. With the existence of Enrofloxacin (ENR), the aptamer recognizes and binds to ENR, thus the signal probe cDNA was released and immobilized onto the electrode surface to hybridized with methylene blue (MB) labelled DNA (MB-DNA), thereby triggering the Exo III-assisted cycle for further signal amplification. As expected, the prepared aptasensor demonstrated excellent sensitivity and selectivity, with a wide linear range from 5.0 × 10 −6 ng/mL to 1.0 × 10 −2 ng/mL for ENR, a low detection limit of 1.59 × 10 −6 ng/mL. Consequently, this strategy provided a promising avenue for ultrasensitive and accurate detection of ENR in milk samples.
研究领域:
分析化学
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纳米技术
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环境科学
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公共卫生
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2016
·
IF 7.145
Qiuchun Dong,Qian Wang,Ziyang Dai,Huajun Qiu,Xiaochen Dong
Developing highly active electrocatalysts with low cost and high efficiency for oxygen evolution reactions (OER) is important for the practical implementations of hydrogen energy. Here, we report a Zn-doped CoSe2 nanosheets grown on free-standing carbon fabric collector (CFC), which was synthesized by using a metal–organic framework (MOF) as precursor and followed by a selenylation process. Importantly, the Zn-doped CoSe2/CFC electrode exhibited an obviously enhanced catalytic activity for OER in 1 M KOH aqueous solution compared with CoSe2/CFC, showing a small overpotential of 356 mV for a current density of 10 mA cm–2, a small Tafel slope of 88 mV dec–1, and an excellent stability. The robust and free-standing electrode shows great potential as an economic catalyst for OER applications.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Xinxiang Wu,Jiaqi Li,Jijiang Li,Qianying Liang,Zena Wu,Fang Wan,Zhenguo Wu,Benhe Zhong,Yanxiao Chen,Xiaodong Guo
Lithium-sulfur (Li-S) batteries are promising for energy storage due to their high theoretical energy density and specific capacity. However, the polysulfide shuttle effect severely limits their performance. In this study, two-dimensional (2D) Co 3 O 4 /CoSe 2 heterostructures were synthesized to enhance polysulfide adsorption and catalysis through synergistic effects. The Co 3 O 4 /CoSe 2 heterostructure exhibited strong adsorption and catalytic activity, significantly improving the battery’s reaction kinetics. At a 1 C rate, the initial discharge capacity reached 958.22 mAh g −1 , with a capacity decay rate of only 0.04 % per cycle over 2000 cycles. At a 2 C rate, the initial capacity was 909.89 mAh g −1 , with a decay rate of 0.06 % over 1400 cycles. Under high temperature conditions (60 °C), the battery delivered an initial capacity of 990.47 mAh g −1 , with a single-cycle decay rate of 0.1 % after 200 cycles. At a low temperature (10 °C), the initial capacity was 1039.1 mAh g −1 , with a decay rate of 0.1 % per cycle after 200 cycles. Additionally, with a high sulfur loading of 3.54 mg cm −2 , the initial capacity reached 1041.8 mAh g −1 , retaining 385.96 mAh g −1 after 200 cycles. These results demonstrate the effectiveness of the Co 3 O 4 /CoSe 2 heterostructure in mitigating the polysulfide shuttle effect and improving the performance of Li-S batteries, offering new opportunities for advanced energy storage systems.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Yonglei Xing,Xiaohua Mai,Wenbo Lv,Fang Wan,Xiaoyong Jin,Gang Ni
Hollow carbon-coated CoSe 2 cubes (CCS2) were derived from a CoFe-PBA template. • Tuning Se-vacancy density reshapes Co electronic state for PMS activation. • CCS2 removed 95% SMX in 10 min with an apparent rate constant of 1.39 min −1 . • 1 O 2 and SO 4 •− dominate, while ·OH, O 2 •− and Co(IV)=O play auxiliary roles. • CCS2/PMS retained high activity over pH 3–11 and in real water matrices. The growing variety and chemical intricacy of refractory organic species in aqueous environments has elevated the design of robust, sustainable, and eco-compatible peroxymonosulfate (PMS) activation platforms into a key research thrust within advanced oxidation. Targeting the recurring drawbacks of common heterogeneous catalysts (insufficient active-site exploitation, considerable metal dissolution, and weak cyclic stability), we built a carbon-shelled cobalt selenide system (CCS) starting from CoFe-PBA, by sequentially performing hydrothermal selenization, polydopamine wrapping, and inert-atmosphere annealing. Modulating the selenium vacancy (V Se ) population proved to substantially reinforce PMS activation. Among the synthesized series, CCS2 emerged as the top performer, eliminating 95% of 20 mg L −1 sulfamethoxazole (SMX) over 10 min. Multi-technique characterization coupled with mechanistic probing revealed that incorporating V Se rearranged the electron distribution around Co atoms, raised the proportion of Co 2+ , and tightened the anchoring of oxygen-containing surface species. Concurrently, under-coordinated Se centers played a role in maintaining the Co 3+ /Co 2+ redox cycle, which together drove PMS through several parallel activation channels. Spin-trapping EPR measurements, quenching experiments, and selective probe assays jointly confirmed coexistence of SO 4 •− , •OH, 1 O 2 , and high-valent Co-O species in the CCS2/PMS system, with 1 O 2 and SO 4 •− as the principal contributors driving SMX abatement. These results elucidate the way anion vacancies tailor the electronic landscape and synergistic catalytic pathways of transition-metal selenides under PMS activation, providing a new conceptual route for designing durable sulfate-radical-based AOP catalysts via defect engineering. Download: Download high-res image (262KB) Download: Download full-size image
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DOI
高影响因子
Journal of Energy Storage
·
2025
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IF 9.8
Xiao-liang Zhang,Jia-le Wang,Wan-ying Hou,Zhun Gao,Wen-chao Hou,Ya-hui Zhang,Shao-hua Luo,Qing Wang,Xin Liu,Sheng-xue Yan
This study centers on the synthesis and sodium-storage properties of CoSe 2 /FeSe 2 and its carbon-coated composite (CoSe 2 /FeSe 2 @C) derived from CoFe-based Prussian blue analogues (PBAs). The material offers high theoretical capacity for sodium-ion batteries (SIBs), but it suffers from severe structural degradation and poor electrical conductivity during cycling, leading to rapid capacity decay. Carbon coating is introduced to address these challenges by enhancing electronic conductivity, buffering volume changes, and improving ion diffusion kinetics. The CoSe₂/FeSe₂@C composite with a hollow nanostructure was obtained, which was prepared via co-precipitation, selenization, and carbon coating. Electrochemical measurements reveal that the composite boasts excellent electrochemical performance. It delivers a high reversible capacity of 443.5 mAh·g −1 at 0.1 A·g −1 , with 93.4 % capacity retention after 100 cycles, and 310.3 mAh·g −1 at 2 A·g −1 , maintaining 80.1 % retention after 500 cycles. The carbon coating significantly enhances conductivity, structural stability, and ion diffusion, endowing the material with superior cycling and rate capabilities. Through ex-situ XRD scanning and other characterization verifications, this work highlights the great potential of Prussian blue analogue (PBA)-derived materials as high-performance anodes for sodium-ion batteries.
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2020
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IF 10.652
Ranxi Liang,Chaozhu Shu,Anjun Hu,Minglu Li,Zhiqun Ran,Ruixin Zheng,Jianping Long
The sluggish oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) kinetics greatly limit the development of lithium-oxygen (Li-O 2 ) batteries. Therefore, developing efficient electrocatalysts with high stability to boost oxygen involved reactions is particularly important for promoting the application of Li-O 2 batteries. Here, CoSe 2 @NiSe 2 heterostructure with distinct heterogeneous interfaces was fabricated via deliberate interface engineering. The formation of heterogeneous interface promotes local fine atomic array distortion that can act as an additional active site of ORR/OER. In addition, CoSe 2 @NiSe 2 with a distinct heterogeneous interface is favorable for the formation of built-in electric field during charging/discharging to enable electrodes with fast electrical transfer rates and reaction kinetics. Synergistically, the additional active sites brought by the fine atomic array distortion are highly conducive to the reversible formation and decomposition of the product. Undoubtedly, batteries with CoSe 2 @NiSe 2 exhibit excellent discharge/charge capacity (3530.1 mA h g −1 and 3485.6 mA h g −1 ), low overpotential (1.21 V) and excellent electrochemical stability for over 1200 h.
研究领域:
材料科学
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电化学
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能源化学
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纳米催化
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电池技术
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
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2019
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IF 7.467
Xiang Zhang,Jun Zhou,Yuying Zheng,Dongyang Chen
Bimetallic transition-metal selenides have emerged as promising anode materials for lithium-ion batteries (LIBs). However, they suffer from rapid capacity fading which is originated from significant chemical and mechanical degradation during lithiation/delithiation processes. Herein, nitrogen-doped graphene aerogel (NGA) with high porosity is prepared via a templated method and serves as the matrix for the uniform growth of sheet-like binary transition-metal selenides (MoSe 2 –CoSe 2 ). The porous NGA with high specific surface area provides a stable and conductive network, which can accelerate electron transmission and shorten the diffusion distance of Li ions . Furthermore, the MoSe 2 –CoSe 2 nanosheets can offer adequate specific capacity because of its high accessibility and multiple redox properties. As a result, the MoSe 2 –CoSe 2 /NGA-10 composite delivers high Li-ion storage capacity (1260 mAh g −1 at 0.1 A g −1 ), excellent rate capability (702 mAh g −1 at 5 A g −1 ), and stable cycling performance (914 mAh g −1 at 1 A g −1 after 200 cycles), demonstrating its great potential for LIB applications.
研究领域:
材料科学
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能源存储
✓ 已验证
DOI
高影响因子
MICROCHEMICAL JOURNAL
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2024
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IF 4.9
Yao Xu,Xin Tang,Yun Xing,Ziyu Pu,Chengshuang Ling,Qing Yang,Xiaoli Xiong
Hydrazine (N 2 H 4 ) is considered to be a highly toxic substance harmful to human body and environment, and has received much attention in the field of electrochemical detection in recent years. In this study, 3D hierarchical flowerball-like CoSe 2 /MnSe nanosheet arrays (CoSe 2 /MnSe FNSAs) were obtained using CoMn-LDH as precursor and cobalt glycerate spheres as the sacrificial template by simple hydrothermal reaction and selenization method. Bimetal selenides have more active electrochemical activity and more abundant electrochemical redox reactions. The unique hierarchical flowerball-like nanosheet array heterostructure can accelerate ionic diffusion kinetics and improve electron transfer. As a hydrazine electrochemical sensor, CoSe 2 /MnSe FNSAs exhibits excellent electrocatalytic performance with a wide detection range of 0.001–7.45 mM and a low detection limit of 0.4 μM. This strategy provides a new choice for the detection of environmental organic pollutants.
研究领域:
材料科学
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环境科学
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分析化学
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产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2017
·Vol. 5
·期 26
·13591-13600
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IF 8.867
Yongchao Tang,Zongbin Zhao,Xiaojuan Hao,Yuwei Wang,Yang Liu,Yanan Hou,Qi Yang,Xuzhen Wang,Jieshan Qiu
Nanostructured CoSe2 anode materials hold great promise for sodium ion batteries (SIBs), drawing much recent research attention. However, high-performance CoSe2 based anodes are still challenging to obtain. Herein, using zeolitic imidazolate framework-67 (ZIF-67) particles as the starting material, nondestructive hollow polyhedral hybrids have been synthesized successfully, which are structured from CNT-bridged carbon-coated CoSe2 nanospheres (CoSe2@C/CNTs). During the synthesis, the controlled in situ growth of CNTs introduces additional mesopores and open channels to the hybrids, and avoids serious agglomeration of the CoSe2 nanospheres. When employed as anode materials for SIBs with ether-based electrolyte, the CoSe2@C/CNTs show overwhelming merits over graphitic carbon-coated CoSe2 nanosphere polyhedral hybrids (CoSe2@GC) and bare CoSe2 particles. Specifically, the CoSe2@C/CNTs anode displays a high reversible capacity (∼470 mA h g−1 at 0.2 A g−1), a good rate capability of ∼373 mA h g−1 even at 10 A g−1, and an excellent cycling stability of over 1000 cycles with a capacity retention of ∼100% calculated from the 70th cycle. In addition, the electrochemical reaction dynamics analysis indicates a considerable capacitive contribution during the discharge–charge cycles, which is beneficial to enhance the rate capability and cyclability of the CoSe2@C/CNTs anode. Such results could be ascribed to the stable ether-based electrolyte-active material intermediates, improved electrolyte-active material contact, and shortened charge transfer paths afforded by the unique hybrid nanostructure.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
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IF 9.965
Yonglong Huang,Yuzhou Liu,Yanzhu Deng,Jing Zhang,Beibei He,Jian Sun,Zhihong Yang,Wei Zhou,Ling Zhao
The coupling of oxygen evolution and reduction reactions (OER and ORR) plays a key role in rechargeable Zn-air batteries (ZABs). However, both OER and ORR still suffer from sluggish kinetics, even when using the mainstream precious metal-based catalysts. Herein, oxygen vacancies-rich CeO 2 decorated CoSe 2 nanocubes are proposed as a novel air electrode to drive OER and ORR for ZABs. The resultant CeO 2 coupled CoSe 2 nanocubes (CeO 2 @CoSe 2 -NCs) catalyst exhibits a significantly enhanced bifunctional activity relative to the pristine CoSe 2 -NCs and the pristine CeO 2 . Moreover, an assembled ZABs using this CeO 2 @CoSe 2 -NCs electrode delivers a high output power density of 153 mW cm −2 and a long-life stability over 400 cycles, superior to the benchmark Pt/C-IrO 2 electrode. Theoretical calculations reveal that the electronic interaction and oxygen vacancies in CeO 2 @CoSe 2 -NCs contribute to efficient oxygen electrocatalysis . This protocol provides a promising approach of constructing oxygen vacancies in hybrid catalysts for energy conversion and storage devices.
研究领域:
材料科学
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电化学
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能源存储与转换
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Chaojiang Fan,Rong Yang,Yun Yang,Yuanyuan Yang,Yong Huang,Yinglin Yan,Lisheng Zhong,Yunhua Xu
Although lithium-sulfur batteries (LSBs) are an attractive next-generation rechargeable battery with high theoretical energy density (2600 Wh kg −1 ) and specific capacity (1675 mA h g −1 ), the shuttle of soluble lithium polysulfides (LiPSs) is still the protruding obstacle to accelerate the redox reaction of LSBs. Here, cubic cobalt diselenide@carbon (CoSe 2 @C) derived from zeolite imidazole framework-67 (ZIF-67) was employed as the functional coating of polypropylene (PP) separator to efficiently adsorb and catalyze polysulfides, inhibit “shuttle effect” and improve the electrochemical reaction kinetics of LSBs. The CoSe 2 @C offers larger mesopore proportion of 77.19 % and abundant active sites to ensure space as a secondary reaction region, and infiltration of electrolyte and rapid transport of Li + . The involved adsorption and catalysis effect are discussed by static adsorption experiment, XPS, and Li 2 S nucleation kinetics analysis. The results show that CoSe 2 @C exhibits strong adsorption effect and catalytic activity on LiPSs, and CoSe 2 @C/PP cells display fast Li + diffusion and improved redox kinetics (high Li 2 S nucleation peak current of 0.27 mA and deposition capacity of 148.46 mA h g −1 ). Ascribe to these advantages, the CoSe 2 @C/PP cell provides an initial discharge specific capacity of 1335.01 mA h g −1 at 0.1 C and a fine reversible capacity at 5.0 C, and achieves stable and durable lifespan with an average capacity decay rate of 0.12 % over 400 cycles at 0.5 C. This work could promote the practical application of metal selenides in the key components and devices for LSBs.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Shuo Chen,Kaiqin Yue,Jiawei Shi,Zhicheng Zheng,Yuanqing He,Hao Wan,Gen Chen,Ning Zhang,Xiaohe Liu,Renzhi Ma
Most nonoxide catalysts based on transition metal elements will inevitably change their primitive phases under anodic oxidation conditions in alkaline media. Establishing a relationship between the bulk phase and surface evolution is imperative to reveal the intrinsic catalytic active sites. In this work, it is demonstrated that the introduction of Fe facilitates the phase transition of orthorhombic CoSe2 into its cubic counterpart and then accelerates the Co–Fe hydroxide layer generation on the surface during electrocatalytic oxygen evolution reaction (OER). As a result, the Fe-doped cubic CoSe2 catalyst exhibits a significantly enhanced activity with a considerable overpotential decrease of 79.9 and 66.9 mV to deliver 10 mA·cm–2 accompanied by a Tafel slope of 48.0 mV·dec–1 toward OER when compared to orthorhombic CoSe2 and Fe-doped orthorhombic CoSe2, respectively. Density functional theory (DFT) calculations reveal that the introduction of Fe on the surface hydroxide layers will tune electron density around Co atoms and raise the d-band center. These findings will provide deep insights into the surface reconstitution of the OER electrocatalysts based on transition metal elements.
研究领域:
材料科学
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电催化
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理论计算
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）