SENSORS AND ACTUATORS B-CHEMICAL
·
2019
·
IF 6.393
Junhua Li,Mengqin Liu,Jianbo Jiang,Beibei Liu,Haixia Tong,Zhifeng Xu,Chunming Yang,Dong Qian
In this work, we demonstrate the morphology-controllable syntheses of CuS crystals by a facile hydrothermal/solvothermal method through merely changing the reaction solvents without employing any surfactants, templates or structure-directing agents. The dependence of electrochemical sensing properties for tartrazine (TT) and sunset yellow (SY) on the morphologies of CuS crystals (microspheres, hexagonal microsheets, sandwich-like plates, interlaced nanosheets and nanoflowers) was studied by voltammetric techniques. Among these CuS structures, the CuS nanoflowers constructed by textile-like nanosheets with a three-dimensional (3D) hierarchical porous structure hold the largest Brunauer–Emmett–Teller specific surface area (37.12 m 2 g −1 ) and display the highest electrocatalytic activities to the TT and SY oxidations. Consequently, the CuS nanoflowers modified electrode exhibits outstanding electrochemical sensing performances, i.e. high sensitivities of 1.7331 and 0.2260 A M −1 for TT, and 0.4228 and 0.01564 A M −1 for SY, low detection limits of 0.012 μM for TT and 0.006 μM for SY, and satisfactory recoveries of 97.0–104.5% for TT and 99.0–105.0% for SY. Simultaneously, it also features excellent anti-interference, stability and reproducibility. The superior sensing performance of CuS nanoflowers may benefit from its unique 3D hierarchical porous architecture, which can facilitate the electrolyte infiltration and promote the active material utilization efficiency. Based on these findings, we can draw a reasonable conclusion that CuS with a flower-like structure is promising electrocatalysts for efficiently sensing TT and SY.
研究领域:
材料科学
·
分析化学
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Xiangdong Zhang,Jian Zhang,Bowen Hou,Xueying Yang,Junlian Ren,Chen Shao
Selective removal of organic pollutants by PMS-activated heterogeneous catalytic system has become one of the commonly used methods, but the adsorption of the catalyst is often ignored in the degradation process. Metal-organic frameworks (MOFs) are often used in the field of environment because of their high porosity and structural diversity/adjustability. However, there are still difficulties in the aggregation and recycling of nanoparticles . This study effectively synthesized the material CuS-PVP@ZIF-67 by using hollow spherical CuS as the carrier of Co-MOF (ZIF-67) to solve these problems. A high concentration of oxytetracycline hydrochloride (OTC) can be successfully adsorbed by electrostatic attraction and π-π interaction, and small amount of PMS may be quickly activated, and the removal rate of OTC is 94.82 % in 20 min. The catalyst used can be easily recovered by suction filtration and has good reusability. In addition, a potential cooperating mechanism for adsorption-PMS activation has additionally been proposed. The degradation pathway of OTC is determined, and the potential harm of intermediate products is analyzed. This work aims to create a heterogeneous catalytic system with significant adsorption and catalytic ability to remove refractory organic contaminants in water.
研究领域:
环境科学
·
催化材料
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
He Li,Yunhui Wang,Jiali Jiang,Yiyong Zhang,Yueying Peng,Jinbao Zhao
In this work, CuS microspheres are synthesized by a facile microwave synthesis without any template or additive. As-prepared CuS microspheres display steady reversibility by adopting triethylene glycol dimethyl ether (TEGDME) as the electrolyte solvent and adjusting cut-off voltage to 0.6 − 3.0 V. The discharge capacity stands at 162 mAh g −1 after 200 cycles with the capacity retention of 95.8%. Electrochemical kinetics of CuS electrodes is investigated by electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV) and galvanostatic intermittent titration technique (GITT) tests. Beyond that, electrochemical reactions of CuS electrodes are explored using ex-situ X-ray diffraction (XRD). As far as we know, it is not only the best performance of CuS electrodes in Na-ion batteries (NIBs) but also the first time that the kinetics and reaction mechanism of CuS in NIBs are investigated.
研究领域:
材料科学
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电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Hui Wang,Jiejun Li,Pengcheng Zhao,Junjie Fei,Yixi Xie
Herein, a sensitive and selective electrochemical sensor modified with CuS doped highly conductive carbon materials (HCC) were succes s fully used to detect vanillin (VAN), which manufactured in a low temperature one step process. Experimental analysis by differential pulse voltammetry (DPV) and cyclic voltammetry (CV) under optimised conditions revealed excellent rate characteristics due to sub-micron spherical particles on the surface of CuS nanoparticles and synergistic effects with the excellent electrical conductivity of HCC. The prepared functionalized CuS-HCC/GCE has an ultra high specific surface area (10.85 mm 2 ) and selective VAN determination, whose detection limit and linear range of VAN sensor are 61 pM and 0.1 nM-120 μM respectively, and has a terrific recovery rate in food samples (96.7 % to 103.8 %). These results show that this work has provided a new promising food sensor for detecting VAN.
研究领域:
分析化学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2023
·Vol. 19
·期 40
·2303099
·
IF 13.3
Zi Yang,Deguang Ji,Zhi Li,Zidong He,Yang Hu,Jie Yin,Yichao Hou,Pinxian Xi,Chun-Hua Yan
Copper-based electrocatalysts effectively produce multicarbon (C 2+ ) compounds during the electrochemical CO 2 reduction (CO 2 RR). However, big challenges still remain because of the chemically unstable active sites. Here, cerium is used as a self-sacrificing agent to stabilize the Cu + of CuS, due to the facile Ce 3+ /Ce 4+ redox. CeO 2 -modified CuS nanoplates achieve high ethanol selectivity, with FE up to 54% and FE C2+ ≈ 75% in a flow cell. Moreover, in situ Raman spectroscopy and in situ Fourier-transform infrared spectroscopy indicate that the stable Cu + species promote C C coupling step under CO 2 RR. Density functional theory calculations further reveal that the stronger * CO adsorption and lower C C coupling energy, which is conducive to the selective generation of ethanol products. This work provides a facile strategy to convert CO 2 into ethanol by retaining Cu + species.
研究领域:
材料科学
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催化化学
·
能源转化
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2020
·Vol. 187
·期 8
·1-10
·
IF 6.232
Zou Lina,Yang Lingxi,Zhan Yi,Huang Di,Ye Baoxian
A photoelectrochemical platform for thrombin determination was developed based on Au-rGO-CuS as multiple signal amplification elements. CuInS 2 QDs was used to sensitize burr-shape TiO 2 (b-TiO 2 ) to obtain a strong photocurrent. Under the specific recognition between aptamer and thrombin, a sandwichlike structure was formed and the Au-rGO-CuS-labeled aptamer (S2@Au-rGO-CuS) was immobilized on the electrode surface. This induced a sharp decrease in photocurrent. The phenomenon is mainly due to the fact that CuS NPs can competitively consume the light energy and electron donor with CuInS 2 /b-TiO 2 . The rGO can increase the amount of CuS NPs and the Au NPs can accelerate charge transferring which depress the recombination of photogenerated electrons and holes in CuS to further enhance the competitive capacity of CuS. The sandwichlike structure has a steric hindrance effect. Therefore, the S2@Au-rGO-CuS has a multiple signal amplification function for thrombin determination. Under optimal conditions, the PEC aptasensor exhibited a wide linear concentration range from 0.1 pM to 10 nM with a low detection limit of 30 fM (S/ N = 3) for thrombin. Besides, the designed aptasensor performed well in the assay of human serum sample, indicating good potential for the determination of thrombin in real samples.
Graphical abstract
研究领域:
生物化学
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分析化学
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医学检测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIOMATERIALS
·
2014
·
IF 8.312
Jing Bai,Yuwei Liu,Xiue Jiang
The synergistic therapy, the combination of photothermal therapy and chemotherapy, has become a potential treatment in the battles with cancer. Here, we developed a synergistic therapy tool that based on CuS nanoparticles-decorated graphene oxide functionalized with polyethylene glycol (PEG-GO/CuS) for cervical cancer treatment. The as-synthesized PEG-GO/CuS nanocomposites with excellent biocompatibility was revealed to have high storage capacity for anticancer drug of doxorubicin (Dox) and high photothermal conversion efficiency, and were effectively employed for the ablation of tumor. In addition, the therapeutic efficacy of Dox-loaded PEG-GO/CuS (PEG-GO/CuS/Dox) nanocomposites was evaluated in vitro and in vivo for cervical cancer therapy. In vitro cell cytotoxicity tests of PEG-GO/CuS/Dox demonstrate about 1.3 and 2.7-fold toxicity than PEG-GO/CuS and free Dox under 5 min irradiation with NIR laser at 1.0 W/cm 2 , owing to both PEG-GO/CuS-mediated photothermal ablation and cytotoxicity of light-triggered Dox release. In mouse models, mouse cervical tumor growth was found to be significantly inhibited by the chemo-photothermal effect of PEG-GO/CuS/Dox nanocomposites, resulting in effective tumor reduction. Overall, compared with chemotherapy or photothermal therapy alone, the combined treatment demonstrates better therapeutic efficacy of cancer in vitro and in vivo . These findings highlight the promise of the highly versatile multifunctional nanoparticles in biomedical application .
研究领域:
生物医学工程
·
肿瘤学
·
纳米医学
✓ 已验证
DOI
PubMed
高影响因子
Journal of Materiomics
·
2025
·
IF 9.6
Zhixing Wan,Shuo Wang,Yahao Mu,Ruihua Zhou,Hang Liu,Tingwu Jin,Di Wu,Jianlong Xia,Ce-Wen Nan
Organic cathode materials have garnered significant attention for their potential application in lithium-ion batteries due to their lightweight nature, tunable structures, high energy density, and environmental friendliness. However, the dissolution of organic cathodes in liquid electrolytes often leads to poor cycling stability, which limits their practical application. In this study, a composite cathode was prepared by ball milling the PTCDA/CuS (perylene-3,4,9,10-tetracarboxylic dianhydride, PTCDA) with a sulfide-based electrolyte and carbon nanotubes. By optimizing the component ratios, the assembled all-solid-state batteries (ASSBs) show a high discharge capacity of 210 mA⸱h/g after 200 cycles without any capacity degradation at a current density of 33.0 mA/g. Through comprehensive characterization techniques including X-ray diffraction (XRD), Raman spectroscopy, Fourier-transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS), the coordination of Cu 2+ and the formation of sulfur-linked polymers during the charge-discharge processes are elucidated, and the reversibility of the electrochemical reactions has been confirmed. This work highlights the excellent compatibility between organic cathodes and sulfide-based electrolytes, providing a new way for the development of high-performance ASSBs with high energy density and extended lifespan.
研究领域:
材料科学
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电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2021
·
IF 3.498
Zifan Li,Zhibin Zhang,Zhimin Dong,Yongchuan Wu,Xiang Zhu,Zhongping Cheng,Yuhui Liu,Yingcai Wang,Zhijian Zheng,Xiaohong Cao,Youqun Wang,Yunhai Liu
The separation of uranium U(VI) through photoreduction approach has attracted substantial attention. Sulfide-based materials have revealed excellent performance for reducing U(VI) and there is no record of CuS based materials. Herein, we synthesized CuS/TNTAs heterostructured nanocomposites (CUTN) with varied CuS contents via successive ionic layer adsorption and reaction (SILAR) method. After SILAR deposition for 10 times, CUTN-10 showed the best photocatalytic performance, and 92.6 % of U(VI) can be removed within 180 min. The CuS could provide sufficient photoelectrons and TNTAs can transport these photoelectrons to the adsorbed U(VI) on its surface, the reduced uranium sediment was proved to be (UO 2 ) O 2 ·2H 2 O. More important, the combination of TNTAs could effective inhibit photocorrosion of CuS and the leaching of Cu 2+ was relatively low. We also unconsciously found that CUTN-10 can photoreduce U(VI) without any sacrificial agent which caused by the oxidation of S 2− . This work expands the application of sulfide-based materials and provides basic data for bracing the expansion of sulfide-based materials in the field of U(VI) photoreduction.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2025
·
IF 5.1
Yuxin Wu,Qi He,Heng Zhang,Xiaolin Meng,Yuanyuan Min,Yi Wang,Xiaohu Wu,Pu Zhang,Yanyun Ma,Yiqun Zheng
In-plane interface engineering of two-dimensional ultrathin CuS–Au and CuS@Au nanohybrids is realized, showcasing the potential in near-infrared photothermal conversion. The synthesis involves creating high-purity ultrathin CuS nanoplates, followed by controlled Au deposition on their edges in two patterns: a layer-by-layer approach for a seamless shell and an island-growth method for isolated nano-islands. This technique precisely manipulates the CuS–Au interface, enhancing their interaction and electronic structure. When irradiated with 808 nm and 1064 nm lasers at 0.4 W m−2, the optimized CuS–Au hybrids achieve photothermal conversion efficiencies of 67.31% and 32.02%, respectively, along with outstanding photothermal stability. Finite difference time domain (FDTD) simulations suggest that attaching spherical particles to the plate edges significantly boosts electric field strength and temperature distribution under NIR light. Additionally, CuS–Au HNPs-I demonstrated remarkable efficacy in killing prevalent clinical pathogens with 10-minute exposure to near-infrared light, achieving an impressive antibacterial efficiency of over 99.9%. This study provides a versatile strategy for the in-plane interface engineering of two-dimensional hybrid nanostructures, paving the way for efficient photothermal materials.
研究领域:
材料科学
·
生物医学工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2022
·Vol. 13
·期 1
·128
·
IF 5.719
Jiapei Hu,Yinyan Gong,Lengyuan Niu,Can Li,Xinjuan Liu
There are growing interests in the development of bifunctional semiconducting nanostructures for photocatalysis and real-time monitoring of degradation process on catalysts. Defect engineering is a low-cost approach to manipulating the properties of semiconductors. Herein, we prepared CuS nanoplates by a hydrothermal method at increasing amounts of thioacetamide (CS-1, CS-2, and CS-3) and investigated the influence of sulfur vacancy (Vs) on surface-enhanced Raman spectroscopy (SERS) and photocatalysis performance. SERS intensity of 4-nitrobenzenethiol on CS-3 is 346 and 17 times that of CS-1 and CS-2, respectively, and enhancement factor is 1.34 × 104. Moreover, SERS is successfully applied to monitor the photodegradation of methyl orange. In addition, CS-3 also exhibited higher efficiency of Cr(VI) photoreduction than CS-1 and CS-2, and removal rate is 88%, 96%, and 73% under 2 h UV, 4 h visible, and 4 h near-infrared illumination, respectively. A systematic study including electron paramagnetic resonance spectra, photoelectrochemical measurements, and nitrogen adsorption isotherms were conducted to investigate the underlying mechanism. This work may help to understand the impact of vacancy defect on SERS and photocatalysis, and provide an effective and low-cost approach for the design of multifunctional materials.Keywords:CuS;sulfur vacancy;surface-enhanced Raman spectroscopy;photocatalysis;real-time monitoring
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Xin Liang,Laishi Li,Yusheng Wu,Feng Liu,Yuzheng Wang
The efficiency of Fenton-like catalysts was critically affected by the rapid transfer of Fe 2+ /Fe 3+ , a process that was essential for the formation of active free radicals by H 2 O 2 . Herein, we synthesized CuS/Fe 3 O 4 @MIL-100(Fe) (CFM) ternary composites using hydrothermal and in-situ growth methods to enhance the degradation of oxytetracycline hydrochloride (OTC-HCl) in a Fenton-like photocatalytic system. The incorporation of CuS as a co-catalyst into the double iron-based system significantly enhanced photocatalytic activity, achieving a 95.31 % degradation efficiency for OTC-HCl within 50 min under optimized conditions. The catalyst had good reusability, has 86.64 % degradation efficiency after five magnetic recovery cycles, and still showed good catalytic performance in the presence of five different concentrations of common anions. Further analysis using active species quenching and electron paramagnetic resonance (EPR) experiments revealed the role of oxygen-containing radicals in the process. Liquid chromatography-mass spectrometry (LC-MS) and density functional theory (DFT) calculations provided OTC-HCl degradation pathways and intermediates. X-ray Photoelectron Spectroscopy (XPS) analysis indicated that CuS enhanced the performance of the bis-iron-based materials by improving the transfer efficiency of Fe 2+ /Fe 3+ and Cu + /Cu 2+ ions, which in turn accelerated the generation of reactive radicals from H 2 O 2 .
研究领域:
环境科学
·
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）