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.
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高影响因子
Journal of Water Process Engineering
·
2026
·
IF 6.6
Jie Zhao,Hongyang Wang,Zhisheng Jia,Ruopu Bai,Chaofan Song,Huixuan Zhang
The addition of CuS could enhance the catalytic activity of FeOCl. • The FeOCl/CuS/PMS can completely degrade ciprofloxacin within 4 min. • The FeOCl/CuS/PMS could work efficiently at pH 3–9. • FeOCl/CuS/PMS system contained reactive species (·OH, SO 4 ·- and O 2 ·- ). FeOCl serves as an effective iron-based catalyst in peroxymonosulfate (PMS) activation for antibiotic removal. However, its catalytic efficiency is hindered by the sluggish redox cycling between Fe 3+ and Fe 2+ . To overcome this limitation, a composite catalyst of FeOCl/CuS was synthesized to enhance catalytic activity. At an optimal mass ratio of FeCl 3 ·6H 2 O to CuS of 1:2, the FeOCl/CuS system achieved complete degradation of ciprofloxacin (CIP) within 4 min. Notably, the catalyst exhibited high degradation efficiency across a broad pH range, demonstrating strong environmental adaptability. Although common co-existing anions and humic acid exerted inhibitory effects on CIP degradation to varying extents, the system remained robust under complex water matrices. Radical quenching experiments and electron paramagnetic resonance (EPR) analyses confirmed that hydroxyl radicals (·OH), sulfate radicals (SO 4 ·- ), and superoxide anions (O 2 ·- ) were the dominant reactive species responsible for pollutant degradation. The incorporation of CuS significantly accelerated the Fe 3+ /Fe 2+ redox cycle, thereby improving PMS activation efficiency. Reaction pathway analysis revealed that CIP was degraded via two primary routes, generating 16 intermediate products, the majority of which showed reduced ecotoxicity compared to the parent compound. Furthermore, the FeOCl/CuS catalyst maintained excellent stability and reusability, retaining over 93% CIP degradation efficiency after four consecutive cycles. These results collectively highlight the promising potential of the FeOCl/CuS/PMS system for practical wastewater treatment applications.
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高影响因子
Polymers
·
2019
·Vol. 11
·期 9
·1393
·
IF 3.164
Yutong Xiong,Bichong Luo,Guixin Chen,Jihai Cai,Qimeng Jiang,Bin Gu,Xiaoying Wang
Copper sulfide nanoparticles (CuS NPs) have recently attracted extensive attention in various fields due to their excellent optical and electrical properties. However, CuS NPs are easy to agglomerate in their preparation on account of the high surface activity. In this study, uniform dispersion of CuS NPs were fabricated with corn stalk as a template and stabilizer, further CuS@corn stalk/chitin composite hydrogel was obtained by crosslinking with chitin. The results reveal that the CuS NPs were evenly dispersed into the composite hydrogels with a three-dimensional network structure, which were verified by the UV-vis spectrum, XRD, FT-IR spectra and SEM. In addition, the as-prepared composite hydrogel with the traits of peroxidase-like activity can convert H2O2into an extremely oxidative and toxic ·OH, which manifested good effects for photodegradation of RhB and antibacterial againstEscherichia coliandStaphylococcus aureus. Hence, the composite hydrogels could be used for photocatalytic treatment and sterilization of wastewater, which provides a new idea for the functional application of CuS NPs.
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高影响因子
Journal of Water Process Engineering
·
2024
·
IF 6.3
Jinghan Ren,Enjian Shao,Haiyan Wu,Yueping Guan
The presence of heavy metals in wastewater poses a substantial threat to both public health and the environment. However, the selective removal and separation of heavy metal ions at ultra-low concentrations from wastewater remains a considerable challenge. In this paper, we innovatively proposed a magnetic precipitation separation method to remove Cu (II) from wastewater using Fe 3 O 4 nanoparticles and Na 2 S. In this process, the Cu (II) was reduced to CuS by Na 2 S, which then rapidly aggregated with Fe 3 O 4 nanoparticles to form Fe 3 O 4 -CuS nanoclusters. SEM, DLS, XRD, VSM and XPS studies demonstrated that the removal of Cu (II) was related to the formation of Fe 3 O 4 -CuS nanoclusters. The results indicated that the removal efficiency of Cu (II) from wastewater could reach 99.75 % within 30 s. In contrast, the removal efficiencies of Co (II), Ni (II), and Zn (II) were 7.64 %, 6.14 %, and 8.41 %, respectively. In addition, the Fe 3 O 4 nanoparticles were easily regenerated from Fe 3 O 4 -CuS nanoclusters using ultrasound, maintaining 98 % removal efficiency of Cu (II) after six consecutive cycles. These results suggested that this method held great potential for the removal of heavy metals from wastewater.
研究领域:
环境科学
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材料科学
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高影响因子
Biomaterials Science
·
2018
·Vol. 7
·期 1
·92-103
·
IF 5.831
Huixiang Yan,Jingqin Chen,Ying Li,Yuanyuan Bai,Yunzhu Wu,Zonghai Sheng,Liang Song,Chengbo Liu,Hai Zhang
Although photoacoustic imaging combined with second near infrared (NIR II) molecular probes for tumor diagnosis has drawn tremendous attention during the past few decades, the targeted photoacoustic imaging of orthotopic hepatocellular carcinoma (HCC) still remains a challenge due to high liver vascularization and non-specificity of probes in liver tumors. Herein, we report on cyclic arginine–glycine–aspartic acid (cRGD) peptide conjugated ultrasmall CuS nanoparticles (CuS@BSA-RGD NPs) which encapsulate bovine serum albumin (BSA) and possess high optical absorption at 1064 nm. The encapsulation of BSA results in great biocompatibility of CuS@BSA-RGD NPs along with excellent photostability and physiological stability. The cRGD conjugation enables the improvement of tumor uptake of CuS@BSA-RGD NPs by virtue of its positive tumor cell targeting capability. The efficient accumulation of CuS@BSA-RGD NPs in the tumor over time after intravenous administration to orthotopic HCC bearing mice was achieved, which resulted in highly sensitive photoacoustic visualization of the tumor region. Toxicity studies indicate that CuS@BSA-RGD NPs exhibited negligible systemic toxicity in vivo. The results demonstrate that the CuS@BSA-RGD NPs might hold great promise for future imaging and diagnosis of cancer.
研究领域:
生物医学工程
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肿瘤学
·
分子影像学
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PubMed
高影响因子
Materials Express
·
2020
·Vol. 10
·期 10
·1725-1731
·
IF 1.65
Duan Xiaobo,Ding Yanhong,Yu Meng
Multilayer graphene was prepared in this study by microwave burst method. Cu9S5/CoS/graphene and CuS/CoS2/graphene composites were obtained by hydrothermal method to regulate the molecular structure and combination of Cu and Co metal sulfides on graphene
substrate. Graphite oxide was doped by hydrothermal method, and then Cu9S5/CoS/graphene composite was prepared by microwave explosion method. Raman, SEM and TEM were used to characterize the self-made graphene. Results showed that the multilayer graphene had a bag-like
structure which was beneficial to anchor sulfide. Three graphene-based composites were characterized by scanning electron microscopy, X-ray diffraction, energy spectrum analysis and electrochemical properties. Moreover, results showed that CuS/CoS2/graphene had the best electrochemical
performance, and its specific capacity reached 324 F/g when the current density was 1 A · g–1, which was much higher than that of the other two samples. Capacity retention rate, interfacial charge transfer resistance and electrolyte diffusion resistance also have advantages.
研究领域:
材料科学
·
电化学
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高影响因子
ENERGY & FUELS
·
2024
·
IF 5.2
JinFeng Ou,Wenbin Luo,Jian Li,Yi Yu,Zhen Zhang,Zisheng Chao,WenJun Yi,JinCheng Fan
This paper designed and successfully prepared a novel sandwich-like structure CuS@GO as a cathode material of aluminum batteries (ABs). Graphene oxide (GO) nanosheets sandwich CuS nanotubes (NTs) in the middle, and the interconnected carbon layers form a 3D conductive network to connect all CuS NTs. This nanotubular structure is conducive to the infiltration of electrolytes, provides more active sites, and promotes a rapid charge transfer. The one-dimensional hollow tubular structure of CuS and the sandwich-like structure composed of GO can buffer the volume changes generated during cycling, increase mechanical stress, and enhance the structural stability of the material. The synergistic effect of the unique microstructure composed of CuS NTs and GO leads to an enhanced electrochemical performance. At a current density of 0.2A g–1, CuS@GO maintains a specific capacity of nearly 96.85 mAh g–1 and Coulombic efficiency (CE) of nearly 100% after 200 cycles. The electrochemical reaction mechanism of CuS@GO as a cathode material for ABs was also investigated.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米材料
·
电池技术
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2019
·
IF 6.361
Lei Liu,Xiaolin Liu,Songlong Jiao
The catalytic activity of MoS 2 for hydrogen evolution reaction (HER) is closely-related to its active edge sites and electrical conductivity . In this work, a novel strategy to enhance HER by introducing defects into interface to take advantage of synergistic effect between them was reported. Specifically, in the first step, molybdenum disulfide (MoS 2 ) with additional active edge sites was prepared through defect engineering, and then copper sulphide(CuS)@defect-rich MoS 2 core-shell structure with better electron transport capability was constructed, thus achieving high-efficiency HER by synergistic effect. Benefiting from the additional active edge sites of the defect-rich MoS 2 and the improved charge transport facilitated by the intimate interface, CuS@defect-rich MoS 2 could afford a current density of 10 mA·cm −2 at a low overpotential of 135 mV and a Tafel slope of 50 mV·dec −1 , as well as relatively long-term stability.
研究领域:
材料科学
·
催化化学
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高影响因子
Energy Sources Part A-Recovery Utilization and Environmental Effects
·
2019
·
IF 0.894
Qian Du,Junjie Xu,Zhiyang Cheng,Jianmin Gao
Research on the application of nano-fluids into the direct absorption solar collector represents a prospective approach to solving the problem of high thermal losses of traditional solar collection systems. In this work, Au, CuS and Au-CuS blended Nanoparticles (NPs) were synthesized and the solar photo-thermal conversion performance of them was studied in an experimental investigation. According to the analysis of the results of the experiment, we knew that the temperature and photo-thermal conversion efficiency rised markedly as the light intensity and concentration increase. Our work found that mixing different NPs to match the solar spectral intensity can prepare working fluids for solar photo-thermal conversion instead of increasing the volume fraction of the same NP. When the concentration ratio of Au-CuS blended nanoparticles is 4:6, the conversion efficiency is the highest, reaching 26.04%.
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高影响因子
APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Yanxia Liu,Zhaoxiao Zhou,Shengping Zhang,Wenhao Luo,Guofeng Zhang
One of the major challenges of high-performance asymmetric supercapacitors is engineering electrode materials with high capacitance and good cycling stability. Hence, we have successfully prepared different CuS hierarchical structures including CuS tubular structures (T-CuS), CuS hollow microspheres (S-CuS) and CuS hollow microflowers (H-CuS) by adjusting the solvents, all of which are investigated as electrode materials for supercapacitors. Among them, the H-CuS electrode exhibits the best electrochemical performance involving a high capacitance of 536.7 F g −1 at a current density of 8 A g −1 and excellent cycling stability with 83.6% capacitance retention for 20,000 continuous cycles at a current density of 5 A g −1 . In addition, an asymmetric supercapacitor has assembled with H-CuS as positive electrode and activated carbon (AC) as negative electrode, which exhibits a desirable energy density of 15.97 W h kg −1 when the power density is 185.4 W kg −1 . These desirable electrochemical performances powerfully demonstrate that the H-CuS electrode has promising potential for applications in energy storage fields.
研究领域:
材料科学
·
电化学
·
能量存储与转换
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高影响因子
ChemistrySelect
·
2023
·Vol. 8
·期 44
·e202303144
·
IF 2.1
Sainan Cao,Yongqi Pan,Huangdi Feng,Jingxia Yang
Graphical CuS with three different morphologies (nanoparticles-NP, nanorods-NR, nanoflakes-NFS) were used as catalysts for A 3 coupling reaction, and CuS-NP exhibited the best behavior due to its higher specific surface area and higher Cu + /Cu 0 , which is benefit to promot the activation of alkyne terminal C−H. A 3 coupling reaction can be used to efficiently synthesize propargylamine, which is an important bioactive molecule intermediate, and copper sulfide (CuS) as its catalyst is rarely reported. Herein, CuS with different morphologies including nanoflowers (NFS), nanorods (NR), nanoparticles (NP) were synthesized and applied to the A 3 coupling reaction. The results show that CuS NP has the highest catalytic activity (99 % conversion) compared to other CuS, and also has good group compatibility and recyclability. Combining the activity with the CuS surface structure checked by XPS, BET and HRTEM etc., the excellent catalytic performance of CuS NP can be attributed to its higher specific surface area ((S BET =26.9 m 2 /g, S Langmuir =144.2 m 2 /g), and higher Cu + /Cu 0 (58.9 %), S n 2− (16.7 %). The large specific surface area can provide more active sites, and higher Cu + /Cu 0 , S n 2− content are conducive to promoting the activation of alkyne terminal C−H, which is an important step in the A 3 coupling reaction.
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高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
·
2023
·
IF 5.8
Fangwei Qi,Huixing Li,Gang Chen,Shuping Peng,Xingrui Luo,Shiyu Xiong,Hua Zhu,Cijun Shuai
Graphitic carbon nitride (g-C 3 N 4 ) had aroused tremendous attention in photodynamic antibacterial therapy due to its excellent energy band structure and appealing optical performance. Nevertheless, the superfast electron-hole recombination and dense biofilm formation abated its photodynamic antibacterial effect . To this end, a nanoheterojunction was synthesized via in-situ growing copper sulfide (CuS) on g-C 3 N 4 (CuS@g-C 3 N 4 ). On the one hand, CuS could form Fermi level difference with g-C 3 N 4 to accelerate carrier transfer and thus facilitate electron-hole separation. On the other hand, CuS could respond near-infrared light to generate localized thermal to disrupt biofilm. Then the CuS@g-C 3 N 4 nanoparticle was introduced into the poly- l -lactide (PLLA) scaffold. The photoelectrochemistry results demonstrated that the electron-hole separation efficiency was apparently enhanced and thereby brought an approximate sevenfold increase in reactive oxygen species (ROS) production. The thermal imaging indicated that the scaffold possesses a superior photothermal effect, which effectively eradicated the biofilm by disrupting its extracellular DNA and thereby facilitated to the entry of ROS. The entered ROS could effectively kill the bacteria by causing protein, K + , and nucleic acid leakage and glutathione consumption. As a consequence, the scaffold displayed an antibacterial rate of 97.2% and 98.5% against E. coli and S. aureus , respectively.
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PubMed
高影响因子
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