CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Jiali Peng,Xiaohui Lu,Xia Jiang,Yunhong Zhang,Qixuan Chen,Bo Lai,Gang Yao
In this study, copper sulfide (CuS) was used as a catalyst to activate persulfate (PS) for atrazine (ATZ) degradation. A new method called one-eight-lives was proposed to investigate the kinetic parameters (i.e., atrazine concentration, CuS dosage, PS dosage). The t 1/8 was calculated to analyze ATZ decay and degradation rate of ATZ, which could be expressed by the kinetic rate equation: −d[ATZ]/dt = (2.985 × 10 −4 mmol L −1 min −1 ) [ATZ] 0.023 [PS] 0.76318 [CuS] 0.80801 . Besides, effects of the initial solution pH and the coexisting inorganic anions (i.e., nitrate ions (NO 3 2− ), chloride ions (Cl − ), bicarbonate (HCO 3 − ) and phosphate (HPO 4 2− )) on ATZ degradation were also evaluated during the experiments. Also, the intermediate products were identified by ultrahigh performance liquid chromatograph-mass spectrometry (UPLC-MS). Based on the detected intermediates, possible reaction pathways were proposed. The stability and reusability of the CuS was investigated after three consecutive experiments. Characteristics of the fresh and used CuS were analyzed via SEM, EDS, XRD and XPS techniques. Furthermore, the different systems were set up to investigate the performance of CuS under the same experimental conditions. In addition, the radical scavengers (e.g., methanol, tert-butyl alcohol and phenol) experiences and PS decomposition study revealed that PS activation process occurred on the surface of CuS, and sulfate and hydroxyl radicals were the dominant active species for the ATZ degradation. The generation of sulfate and hydroxyl radicals was further confirmed by electron spin resonance (ESR). Besides, the generation of HO during the reaction process in CuS/PS system was quantified indirectly by HPLC . Finally, the possible reaction mechanism of CuS/PS system was proposed according to the comprehensive analysis. The findings of this study provided useful information for the application of CuS in recalcitrant organic contaminants degradation.
研究领域:
环境科学
·
化学
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DOI
高影响因子
Journal of Materials Chemistry B
·
2018
·Vol. 6
·期 7
·1035-1043
·
IF 4.776
Jian He,Lisha Ai,Xin Liu,Hao Huang,Yuebin Li,Mingguang Zhang,Qianru Zhao,Xingguo Wang,Wei Chen,Haoshuang Gu
Hydrophobic CuS nanodisk assemblies and the anticancer drug paclitaxel (PTX) have been co-encapsulated into hybrid silica nanocapsules using a triblock copolymer®F127 (PEO106PPO70PEO106) micelle based soft-template method under mild conditions. The as-prepared CuS–PTX/SiO2 composite nanocapsules have excellent biocompatibility, solubility and high colloidal stability in physiological environments and also exhibit an enhanced photothermal conversion efficiency (PCE) of up to 31.2% as a result of the localized surface plasmon resonance (LSPR) effects. Owing to the hydrophobic–hydrophobic interaction and the silica shell protection, the PTX encapsulation ratio could reach 41.25% and the loaded PTX can undergo sustained release and controlled by near infrared (NIR) laser irradiation. In addition, in vitro and in vivo studies demonstrated the remarkable antitumor effects of the CuS–PTX/SiO2 nanocapsules under NIR laser irradiation (980 nm, 1 W cm−2) for 5 minutes. Hence, the designed novel CuS nanodisk assembly based CuS–PTX/SiO2 nanoplatform shows great potential for synergetic chemo-photothermal cancer therapy.
研究领域:
癌症治疗
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纳米技术
·
材料科学
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生物医学工程
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DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2024
·
IF 20.2
Liming Yang,Guangzhen Liu,Zhenglin Chen,Zhiyan Guo,Tian Liu,Hui Shi,Penghui Shao,Xianchuan Xie,Wenwei Li,Xubiao Luo
Transition metal sulfides have demonstrated excellent heavy metal detoxification in previous studies. However, the activity of their S-functional sites is usually not maximized because they are not precisely regulated. Herein, we report a new short-term cathodic tuned CuS crystals (C-tuned CuS) distortion strategy, ultrafast detoxicating over 95% Cr(VI) in 1 min，its detoxification rate was elevated by five orders of magnitude times compared to the untuned one. The high Cr(VI) detoxification performance is mainly attributed to the layered sulfur atoms tuning within series of cathodic potential shown by In-situ Raman. Besides, the four-tuning stages of C-tuned CuS lattice distortion based on the variation of Raman peak height and redshift changes was investigated by density functional theory (DFT) calculations, showing that the S-S bonds was stretched under cathodic tuning, extending from 2.106 to 2.345 Å. The stretched S-S bonds with enhanced polarity and electron activity prevailed the formation of transient Cr-S bonds with Cr(VI), favoring the direct electron transfer without O mediation, thus reducing the Cr(VI) reduction energy barrier. Cathodic tuning CuS crystal distortion, a “Plug and Play” strategy, show a new electron-level microscopic insights into wastewater reduction techniques development.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·Vol. 49
·期 12
·4793-4800
·
IF 2.5
Rui Guo,Yuxin Sun,Junlai Jiang,Limei Zhang,Zhengyang Ji,Yi Jiang
Transition metal sulphides have received much attention due to their high theoretical specific capacity and good electrochemical stability. Among them, CuS has emerged as a favorable option owing to its affordability, diverse nanostructures, and metallic electronic conductance. However, despite its good initial capacitance performance, copper sulfide exhibits poor performance in terms of long-term stability. The doping of Zn can alter the crystal structure of copper sulfide, thereby enhancing its stability in electrochemical applications and improving the cycling stability of the supercapacitor. In this study, zinc-doped CuS materials were synthesized via a hydrothermal method and utilized as the positive electrode material for supercapacitors. Notably, in a three-electrode system, at a current density of 4 mA cm−2, the specific capacitance of the electrode material can reach 3980 mF cm−2. Moreover, at a current density of 20 mA cm−2, the capacitance retention rate reaches 85% after 5000 cycles. Furthermore, the assembled hybrid supercapacitor (Zn–CuS//activated carbon) maintains a capacitance retention rate of 78% after 4000 cycles at a current density of 20 mA cm−2. The excellent electrochemical performance observed in this study provides valuable insights for the design of high-performance electrode materials for supercapacitors.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
RENEWABLE ENERGY
·
2026
·
IF 9.1
Yanbo Liu,Jiajia Zheng,Yanan Liu,Xiaoxiao Wang,Yen Wei,Seeram Ramakrishna,Bo Yang
Solar-driven interfacial evaporators represent a promising approach to alleviate global freshwater scarcity. However, practical applications still face challenges such as low evaporation efficiency, salt scale accumulation, and unstable evaporation. Therefore, we polymerized and deposited polydopamine (PDA) and hydrothermally synthesized CuS nanoparticles onto a polyimide (PI) aerogel to prepare a superhydrophilic porous CuS/PDA@PI nanofibrous aerogel. The aerogel achieved >97% light absorption over 200-2500 nm and a water evaporation rate of 1.963 kg m −2 h −1 under one sun irradiation (1 kW m −2 ). The apparent total evaporation efficiency reached 119.8%, exceeding the theoretical limit due to additional environmental heat harvesting. Even after 1200 min of cycling, the aerogel maintained an apparent total evaporation efficiency of 116.6%. The evaporator maintained an apparent total evaporation efficiency of 88.7% under a salt (20%) environment and exhibited self-cleaning performance. Furthermore, the aerogel exhibited purification performance for dye wastewater, acidic and alkaline solutions, and seawater. This superhydrophilic evaporator provides a viable route for practical seawater desalination.
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产品关联
DOI
高影响因子
Materials Today Communications
·
2025
·
IF 4.5
Jinzhao Shu,Xueyi Dong,Yuqi Zhang,Zhenzhen Pan,Tianyu Lu,Shijun Kang,Qianwei Liu,Zhiguo Hou,Sen Wang,Bin Yang
The growing danger of bacterial infections has resulted in an urgent need for developing new antibacterial approaches. In this study, cellulose nanofiber-copper sulfide (CNF-CuS), calcium peroxide (CaO 2 ), and L-arginine (LA) were incorporated into polyvinyl alcohol (PVA) and chitosan (CS) hydrogels to fabricate a multifunctional PVA/CS/CNF-CuS/CaO 2 /LA composite hydrogel with near-infrared (NIR)-activated photothermal, photodynamic, and gas therapies. Antibacterial tests on PVA/CS/CNF-CuS/CaO 2 /LA showed that, after a 10-minute NIR irradiation period, the hydrogel achieved antibacterial rates of 99.3% against E. coli and 99.7% against S. aureus. The marked improvement in bactericidal performance can be attributed to the synergistic interaction of elevated temperature, reactive oxygen species (ROS), and nitric oxide (NO). Given the effective antibacterial property of the PVA/CS/CNF-CuS/ CaO 2 /LA hydrogel, this study offers new insights into the design of composite hydrogels for wound healing and wound dressing applications.
研究领域:
生物材料学
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医学工程
·
抗菌研究
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Chao Zhang,Huayu Wang,Lijia Zheng,Meng Tang,Ming Ge
A facile one-step hydrothermal method was used to obtain MoS 2 /CuS composite catalyst, which was analyzed using multiple characterization techniques, such as XRD, SEM, TEM, SAD, FT-IR and XPS. As-prepared MoS 2 /CuS showed an enhanced peroxydisulfate (PDS) activation performance for tetracycline (TC) elimination compared with MoS 2 and CuS in a batch reactor. The incorporation of MoS 2 and CuS possess more active sites and low-valent S substances to facilitate the circulation of Mo 6+ /Mo 4+ and Cu 2+ /Cu + , thus promoting PDS activation and TC degradation. Mechanistic studies demonstrated that the free radical (SO 4 •− , ∙ OH and O 2 •− ) and non-free radical ( 1 O 2 ) oxidation pathways collectively led to TC degradation in MoS 2 /CuS-PDS system, and 1 O 2 played a primary role. The impact of important operating factors on TC elimination, the pathways of TC degradation and the toxicity of degradation intermediates were investigated. To facilitate the practical application of MoS 2 /CuS catalyst, it was uniformly loaded onto polyurethane (PU) sponge with a rich pore structure. As-obtained MoS 2 /CuS@PU catalytic sponge activating PDS could efficiently remove TC from the different water matrices in a continuous flow reactor; moreover, MoS 2 /CuS@PU can maintain a high level of stability after 20 h of continuous operation.
✓ 已验证
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2025
·
IF 4.6
Yi Zhong,Jie Li,Pei Xu,Yantao Lou,Xingchen Zhang,Haibing Ji,Yuanjie Teng
Semiconductors offer advantages as surface-enhanced Raman scattering (SERS) substrates, including high stability and low cost. However, their intrinsic plasmonic resonance is inherently weak due to bandgap limitations, where valence electrons can only be excited to the conduction band under specific conditions. Consequently, their SERS enhancement mechanism primarily relies on charge transfer processes at the material-molecule interface, resulting in enhancement factors typically 1–3 orders of magnitude lower than those of conventional noble metal substrates (e.g., Au, Ag). To address this limitation, this study proposes a semiconductor-metal heterojunction synergistic enhancement strategy. A SERS substrate was designed by constructing a core-shell heterostructure of CuS and metallic Cu (CuS@Cu), aiming to combine efficient charge transfer with strong electromagnetic field enhancement. The results demonstrate that the synthesized CuS@Cu core-shell heterojunction exhibits significantly enhanced Raman activity. The optimization of SERS performance were systematically investigated by tuning precursor concentrations (e.g., CuS colloidal concentration, CuSO₄ concentration). Utilizing a liquid-liquid interfacial self-assembly technique, with n-butyl acetate as the oil phase and an aqueous colloidal dispersion of CuS@Cu nanoparticles as the aqueous phase, large-area, ordered CuS@Cu core-shell heterojunction films were fabricated. Leveraging a selective interfacial CT mechanism between the CuS semiconductor and probe molecules (e.g., Rhodamine B (RhB), Methylene Blue (MB), Malachite Green (MG)), this substrate enables specific enhancement of their SERS signals (EF ∼ 10 5 for RhB). Quantitative limits of detection reached 1 × 10 −7 mol/L, 3.16 × 10 −7 mol/L, and 3.16 × 10 −6 mol/L for RhB, MB, and MG, respectively. Also, the substrate exhibits high reproducibility and homogeneous SERS response (RSD < 4.5 %), ensuring reliable and robust sensing performance. The combination of the controllable liquid-liquid interfacial self-assembly and the heterojunction enhancement effect highlights the significant potential of this substrate for application in portable SERS sensing devices.
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产品关联
DOI
PubMed
高影响因子
MACROMOLECULAR MATERIALS AND ENGINEERING
·
2022
·Vol. 307
·期 8
·2200090
·
IF 4.402
Kanglong Wang,Yueqian Liu,Duanming Li,Anyang Zhang,Pingping Mo,Jun Liu,Yifeng Wang,Yanjun Chen
CuS nanoparticles (NPs) and CuS NPs/alginate nanocomposite films are prepared using a novel method based on the coordinated electrodeposition of alginate. This method exquisitely utilizes the coordination of alginate with Cu 2+ ions to carry out the electrodeposition, and alginate as the stabilizer for CuS NPs and the major ingredient in the nanocomposite film. Thus, the method has many advantages such as facile operation, green route, mild conditions, and convenient post-treatment. After the electrodeposition, a smooth and homogeneous film has been electrodeposited on the anodic electrode. Transmission electron microscopy observation reveals that there are nanoparticles (the average size of 6.0 nm) in the electrodeposited film. The results from spectral analysis further confirm the existence of CuS NPs. The CuS NPs/alginate nanocomposite film modified electrode can be directly constructed by taking advantage of the electrodeposition, which shows the electrochemical detection capability towards H 2 O 2 and hydroquinone. The CuS NPs/alginate nanocomposite film also possesses the colorimetric detection capability toward H 2 O 2 and dopamine. Therefore, this study offers a green and convenient method for fabricating CuS NPs and nanocomposite films, which is promising for applications in functional nanocomposites and detection fields.
研究领域:
材料科学
·
分析化学
·
环境科学
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·
IF 7.2
Yingfeng Wang,Ming Huang,Maoli Yin,Wei Li,Xun Zhang,Xiaojuan Li,Gang Li
Bacterial adhesion and proliferation on the surface of solar energy evaporator lead to contamination of the evaporation water and reduce the efficiency of photothermal evaporation. In this work, the metal-organic framework (MOF), HKUST-1 was in situ synthesized onto the surface of MXene, and CuS was sulfurized onto the Cu 2+ sites to form MX/HK@CuS nanosheets. The morphology, microstructure, and crystallinity of MX/HK@CuS were characterized using SEM, EDS, FTIR, XRD, and XPS. Results shows that MX/HK@CuS exhibited fair photothermal water evaporation capabilities, with a photothermal evaporation efficiency exceeding 30% in aqueous solution under irradiation. The photothermal water evaporation efficiency of MX/HK@CuS-3 thin sheets was 86%, demonstrating significant photothermal water evaporation performance. The antibacterial properties of the MX/HK@CuS series were attributed to Cu 2+ release, photothermal and photodynamic conditions via sulfurization times. Interestingly, MX/HK@CuS-3 shows over 99.9% of inactivation to E. coli and S. aureus within 20 min of exposure under NIR and simulated sunlight illumination. Meanwhile, MX/HK@CuS-3 demonstrated improved efficacy in biofilm eradication, with weak bacterial adhesion. The MX/HK@CuS series showed impressive blood compatibility, indicating its biocompatibility and environmental safety. In conclusion, this study provides a novel multifunctional platform for solar-energy evaporator materials, combining triple functional antibacterial properties with high photothermal conversion efficiency.
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产品关联
DOI
高影响因子
POLYMER COMPOSITES
·
2026
·
IF 4.9
Shaokai Hu,Shengzong Ci,Mingyu Wang,Ye Zhang,Chengrui Di,Bo Zhu,Kun Qiao
The interfacial characteristics of carbon fiber (CF)-reinforced polymer (CFRP) composites critically determine their mechanical performance. While CFs modified with nanoparticles demonstrate efficacy in interface regulation of composites, conventional methodologies are typically accompanied by limitations, including high cost of raw materials, nanoparticle agglomeration tendencies, and demanding synthesis conditions, rendering them impractical for large-scale applications. This study presents a simplified, cost-effective technique for in situ synthesis of inorganic copper sulfide (CuS) nanoparticles on CF surfaces. Utilizing copper chloride dihydrate (CuCl 2 ·2H 2 O) and sodium sulfide nonahydrate (Na 2 S·9H 2 O) as precursors, nano-CuS particles with diverse chemical structures and physical morphologies were controllably synthesized in situ on CF surfaces by regulating the ratio of copper-to-sulfur ions. Results indicate significantly improved surface activity, wettability, and smooth surface morphology for the modified CFs. Consequently, the resulting CFO–CuS 1:1 /Polyamide 6 (PA6) composites manifest superior interfacial and mechanical properties, with an interlaminar shear strength (ILSS) of 65.8 MPa and flexural strength of 959.0 MPa. These values represent 19.6% and 24.8% improvements over unsized CF/PA6 composites, respectively. In addition, the thermal conduction performance of CFO–CuS 1:1 /PA6 composites has been significantly improved. This investigation provides a practical strategy for using nanomaterials to modify CF surfaces to enhance interface adhesion and functional properties. Highlight A facile surface modification approach is developed for the in situ growth of low-cost, hydrophilic nano-CuS on carbon fibers. The interfacial bonding and thermal conduction properties of CFO–CuS 1:1 /PA6 composites are remarkably enhanced. Systematic investigation of nano-CuS morphology and structure effects on interfacial properties of CFRP composites.
✓ 已验证
DOI
高影响因子
ANALYST
·
2024
·
IF 3.6
Xiaoqing Zhang,Shanglin Li,Mei Liu
Bacterial contamination is a serious issue for public health and food safety. In this work, a simple and label-free fluorescence detection nanoplatform for Escherichia coli (E. coli) was established on the basis of the competitive relationship for the reduction of Cu2+ in CuS-BSA between E. coli and O-phenylenediamine (OPD). OPD could be directly oxidized by Cu2+ to produce 2,3-diaminophenazine (ox OPD) with fluorescence properties. When OPD was introduced into an aqueous solution containing CuS-BSA and E. coli, the oxidation of OPD was inhibited owing to the reduction of Cu2+ to Cu+/Cu0 by NADH-2 dehydrogenase in the bacterial copper homeostasis mechanism, thus decreasing the fluorescence response signal of the system. Meanwhile, our strategy exhibited a satisfactory performance with a broad linear response to E. coli ranging from 12 to 1.2 × 107 CFU mL−1, and the limit of detection was 9 CFU mL−1. The practicability of the developed fluorescence biosensing platform in real samples was evaluated by successful determination of E. coli in drinking water and orange juice. These findings provide a new sensing strategy for analyzing other foodborne bacteria and ensuring food safety assessment.
研究领域:
生物传感
·
食品安全
·
微生物学
✓ 已验证
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）