JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2017
·
IF 2.625
Zhilan Cai,Yuming Zhou,Shuaishuai Ma,Shiwei Li,Haiyong Yang,Shuo Zhao,Xi Zhong,Wenting Wu
A novel g-C 3 N 4 /CuS p - n heterostructured photocatalyst has been fabricated through an in situ synthesis technique. The samples were characterized through X-ray diffraction, energy dispersive spectroscopy, X-ray photoelectron spectroscopy, transmission electron microscopy and UV–vis spectroscopy. And the results indicated that CuS nanoparticles were closely anchored on the surface of g-C 3 N 4 with good dispersion. The g-C 3 N 4 /CuS heterojunctions exhibited enhanced photocatalytic performance in degradation of RhB and MB than that of pure g-C 3 N 4 and CuS, and the selected sample of g-C 3 N 4 /CuS-2 displayed the best photocatalytic activity. The degradation rates of RhB and MB with g-C 3 N 4 /CuS-2 photocatalyst were 8.914 and 13.543 times higher than that of pure g-C 3 N 4 , and 3.023 and 6.373 times higher than that of pure CuS, respectively. The enhancement of photocatalytic activity may be ascribed to the matched overlapping band structure and the interaction between CuS and g-C 3 N 4 . The interaction between g-C 3 N 4 and CuS would not only improve the optical absorption property of g-C 3 N 4 , but also create more interface for the efficiently transfer of photo-generated electron-hole pairs to restrict the recombination, which was proved by the photoluminescent spectra. Moreover, a possible photocatalytic mechanism has been tentatively proposed according to the experimental results.
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
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2021
·
IF 19.503
Yilei Li,Qing Zhao,Yang Zhang,Yunchao Li,Louzhen Fan,Fa-tang Li,Xiaohong Li
Photocatalysis has been facing challenging problems especially the inefficient photocarriers transfer at the interfaces. Here, based on K sp difference, we prepare the sequential heterojunction of CoS/CdS/CuS via sequential cation exchange strategy, and propose the concept of "electron-welcome zone", where the point-to-point contact can be formed at the interface, thus providing continuous electron transport channels. HAADF-STEM EDS line test indicates the formation of designed structures, and the p/n junction is confirmed by band structure and Mott-Schottky analysis. Theoretical calculation indicates that CoS reduces the Gibbs free energy of the reaction. TRPL spectra show that the existence of "electron welcome zone" greatly improves the lifetime of electrons. This sequential structure enable the optimal H 2 production rate to reach 123.2 mmol g −1 h −1 with AQE of 45.6%, which is among the highest values of CdS-based photocatalysts. This work opens new way to efficient photogenerated carrier transfer channel for solar-energy conversion.
研究领域:
材料科学
·
能源化学
·
催化作用
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2021
·
IF 8.128
Enhui Ma,Ke Wang,Zhenqi Hu,Hong Wang
Antibiotics as emerging pollutants in water pose great risks to human health. Due to their persistence in the environment, advanced oxidation processes (AOPs) have been proposed for the degradation of antibiotics. Therefore, developing efficient catalysts for AOPs becomes critical for the removal of antibiotics. Herein, we develop self-propelled CuS-based micromotors (CuS@Fe 3 O 4 /Pt) as active heterogenous catalysts for efficient photo-Fenton degradation of antibiotics. Combining the merits of conventional heterogenous and homogenous catalysts, the prepared micromotors are easy to recycle and free of secondary pollution risks, while demonstrating high degradation efficiency due to self-induced intensification of mass transfer via autonomous motion and microbubble generation. The H 2 O 2 in the Fenton reagents can serve as the fuel for the micromotors to drive their self-propulsion by bubbles generated from catalytic decomposition of H 2 O 2 by the platinum layer. The dual-stimuli-responsiveness of the micromotors to magnetic field and light irradiation allows multi-modes of propulsion and guidance in different systems. The efficient photothermal effect of CuS enables the micromotors to achieve collective phototactic motion toward light, whereas magnetic responsiveness facilitates the recovery and collection of the micromotors. The synergistic effect of CuS and Fe 3 O 4 NPs in H 2 O 2 under visible light irradiation generates a large amount of OH · and · O 2 – to effectively degrade tetracycline within several minutes. With these advantages, the dual-stimuli-responsive CuS-based micromotors provide a new strategy for enhanced degradation of antibiotics in water purification applications.
研究领域:
环境科学
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纳米技术
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化学工程
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Science & Engineering C-Materials for Biological Applications
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2019
·
IF 4.959
Yanqiu Fu,Wei Jin
Glucose detection is of great importance for the medical diagnosis, food biotechnology and pharmaceutical analysis. In this study, we synthesized a core-shell CuS-Cu 2 S decorated carbon nanotube-graphene nanocomposite via a facile hydrothermal method. It exhibits great sensing performance towards glucose with wide linear range ranging from 0.001 to 2 mM, ultra-sensitivity of 1923 μA·cm − 2 ·mM − 1 and 0.33 μM detection limit in alkaline solutions. The excellent electrocatalytic activity originates from the synergistic effect between heterogeneous copper sulfides structures and carbon nanomaterials. Besides, the fabricate sensor also has great durability, selectivity and great potential for practical applications.
研究领域:
生物医学工程
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2022
·
IF 14.224
Yuping Mi,Yisong Zhao,Jianmin Chen,Xiaolu Li,Yunxia Yang,Faming Gao
Multicomponent heterogeneous Ti 3 C 2 transition metal carbide (MXene)-based materials are receiving extensive research attention due to their interesting synergistic interactions and catalytic properties. However, the morphology-controllable synthesis of heterostructures as structural stabilizers for Ti 3 C 2 MXene remains a challenge owing the complicated synthesis procedure. In this work, a kind of ternary heterogeneous nanomaterials CuCo 2 S 4 /CuS/Ti 3 C 2 MXene with a nanorod/nanoplate/nanosheet hybrid architecture is constructed through a one-step low-temperature solvothermal method. The well-designed ternary one-dimensional (1D)/two-dimensional (2D)/2D CuCo 2 S 4 /CuS/Ti 3 C 2 MXene heteromaterials exhibit synergistic improvements in substrate-catalyzed reactions for electrochemical acetylcholinesterase (AChE) biosensor . The Michaelis-Menten constant for the Nafion/AChE/CuCo 2 S 4 /CuS/Ti 3 C 2 MXene/GCE biosensor is 228 μM, which is smaller than ones reported in previous literatures, indicating a higher affinity of the fabricated enzyme biosensor to acetylthiocholine chloride. The biosensor exhibits a well linear relationship with chlorpyrifos concentration ranging from 2.852 × 10 −12 M to 2.852 × 10 −6 M. The multicomponent 1D/2D/2D CuCo 2 S 4 /CuS/Ti 3 C 2 MXene heteromaterial may shine a light in more electrochemical applications.
研究领域:
材料科学
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分析化学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Wenwen Wang,Shihui Jiao,Boran Wang,Yumei Tan,Yue Zhao,Qi Zhang,Yutang Kang,Xinyan Lv,Canyu Cui,Guangsheng Pang
MoS 2 /CuS nanosheets coated on brass mesh with switchable superwettability have been prepared through a facile hydrothermal method. The MoS 2 /CuS coated mesh shows excellent underwater superlyophobicity and underliquid superhydrophobicity for gravity-driven immiscible organic solvent/water mixtures separation. Switchable permeation function of water-removing or organic solvent-removing can be achieved by water or organic solvent pre-wetted mesh. After 20 cycles of organic solvent/water separation, the MoS 2 /CuS coated mesh demonstrates high separation efficiency above 99.5% for both of cyclohexane/water mixture and tetrachloroethylene/water mixture. The MoS 2 /CuS coated mesh presents satisfactory chemical stability under acidic or alkaline conditions in the pH range of 1–13. The switchable superwetting property and chemical stability make it possible to be a potential candidate in separation of immiscible organic solvent/water mixture.
研究领域:
材料科学
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环境工程
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2020
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IF 3.83
Bo Yu,Fanming Meng,Ting Zhou,Aoyu Fan,Muhammad Wasim Khan,Hao Wu,Xingbin Liu
The plasma semiconductor Cu 2-x S has disclosed enormous potential in the field of broad-spectrum driven photocatalyst design due to its unique LSPR effect in the NIR region. Nevertheless, ineffective carrier separation and severe photocorrosion hinder the further functional applications of this promising material. Here, the TiO 2 @CuS double-shell nanoboxes were successfully constructed via a multistep control strategy involving template participation, and were firstly employed to broad-spectrum photocatalytic hydrogen evolution and pollutant elimination. The hollow core-shell nanocubes with LSPR effect have prominent advantages in broad-spectrum light response, improved photocharge separation and effective photocorrosion inhibition. Besides, the heterogeneous cavity structure also provides a larger specific surface area and ameliorates the light efficiency. Consequently, the optimized TiO 2 @CuS double-shell nanoboxes exhibit superior activity for H 2 production under full-spectrum/NIR light irradiation (2467 and 173 μmol g −1 h −1 , respectively), and maintain high activity in the photodegradation of stubborn pollutants. This work will motivate hollow photocatalysts designed to effectively utilize the spectrum and protect the sulfide core.
研究领域:
材料科学
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环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
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2023
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IF 5
Yun Liu,Qian Lan,Jinxiu Liu,Yaxin Shi,Quanxin Wu,Qian Wang,Shuang Yang,Fan Cheng
To avoid the occurrence of antibiotic resistance and improve bactericidal effect, a multifunctional antibacterial nanoagent BCPP was successfully constructed for targeted photodynamic/photothermal combination therapy (PDT/PTT). The prepared BCPP consists of protoporphyrin (PpIX) as the photosensitizer , CuS nanoparticles as the photothermal agent, phenylboric acid (PBA) as the bacteria-targeting segment and bovine serum albumin (BSA) as the colloid stabilizer. Afterwards, its photodynamic/photothermal capacities, bacteria-targeting effect and bactericidal efficiency were intensively investigated. Experimental results confirmed its good singlet oxygen generation ability and high photothermal conversion efficiency. In addition, BCPP displayed good bacteria-targeting properties for both S. aureus and E. coli . Moreover, in vitro antibacterial assays proved its enhanced therapeutic efficiency through combined antibacterial PDT/PTT owing to PBA-mediated bacteria-targeting function. Finally, in vitro assays revealed its good hemocompatibility and low cytotoxicity. To sum up, our study offered a convenient method to build non-antibiotic antibacterial nanoagents for targeted PDT/PTT, and the prepared bactericidal is a promising drug candidate suitable for clinical trials in the future.
研究领域:
纳米技术
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光疗
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抗菌剂
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材料科学
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生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
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2017
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IF 12.343
Shao-Qing Liu,Hao-Ran Wen,Ying-Guo,Yan-Wu Zhu,Xian-Zhu Fu,Rong Sun,Ching-Ping Wong
Highly active, durable and cost-effective eletrocatalysts are crucial for hydrogen evolution reaction (HER). Herein, we report novel hollow hybrid spheres comprising of amorphous Ni(OH) 2 and crystalline CuS mesoporous nano-shelled heterostructures as efficient HER electrocatalysts . Spherical Cu 2 O particles are used as templates for fabrication of Ni(OH) 2 @CuS hollow spheres with nano-shelled heterostructures . The as-obtained catalysts exhibit much higher performance than the single Ni(OH) 2 , CuS, their physical mixture and crystalline Ni(OH) 2 @CuS toward water electrochemical reduction in alkaline medium . The superior HER electrocatalytic performance might be attributed to the unique hollow mesoporous nanoshelled architecture and the heterostructured synergetic effects between amorphous Ni(OH) 2 and crystalline CuS, in which the short-range order of the inner amorphous Ni(OH) 2 mesoporous shell creates abundant active sites on the surface, and the conductive CuS out layer promotes electron transportation. This work might open a door for designing and synthesizing of hollow nanomaterials with mesoporous nano-shelled heterostructures consist of amorphous and crystalline phase for applications in electrochemical catalysis and energy conversion.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
BIOSENSORS & BIOELECTRONICS
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2018
·
IF 8.173
Xianzhen Song,Xiaojian Li,Dong Wei,Rui Feng,Tao Yan,Yaoguang Wang,Xiang Ren,Bin Du,Hongmin Ma,Qin Wei
In this work, 3,4,9,10-perylenetetracar-boxylic acid (PTCA) as luminophor was grafted on the surface of graphene oxide (PTCA-GO) directly. GO exhibited large specific surface area and excellent electrical conductivity which can immobilize large amounts of PTCA to improve the electrochemiluminescence (ECL) efficiency. Moreover, gold nanoparticles (Au NPs) were anchored on the surface of PTCA-GO to immobilize primary antibodies (Ab 1 ) via Au-NH 2 bond and enhance the electron transport of PTCA-GO. CuS was used as a novel co-reaction accelerator in PTCA-K 2 S 2 O 8 system to label secondary antibodies (Ab 2 ), which can react with the coreactant (K 2 S 2 O 8 ) to produce more SO 4 •- . SiO 2 nanospheres with large specific surface area were used to load a mass of CuS and Au NPs, which can directly combine with Ab 2 and accelerate the ECL emission remarkably. Therefore, a novel sandwich-type ECL immunosensor was fabricated successfully for amyloid-β protein (Aβ) detection. Under the optimal condition, a wide detection range from 50 fg/mL to 25 ng/mL and a low detection limit of 18 fg/mL (S/N = 3) were obtained. Featuring favorable specificity, stability and reproducibility, the strategy can be a powerful analytical tool in sensitive trace detection of biomolecules in clinical analysis.
研究领域:
生物分析化学
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医学检测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Biophotonics
·
2018
·Vol. 12
·期 3
·e201800237
·
IF 3.768
Yubin Liu,Duyang Gao,Mengze Xu,Zhen Yuan
In this study, CuS nanoparticles with optical absorption covering both near-infrared I (NIR-I) and NIR-II biological windows were prepared and served as the contrast agents for multispectral photoacoustic imaging. The physiological parameters including concentrations of deoxyhemoglobin and oxyhemoglobin as well as the water content in the tumor location were quantified based on the multispectral photoacoustic reconstruction method. More importantly, the concentration of CuS nanoparticles/drugs accumulated in the tumor was also recovered after intravenously injection, which are essential for image-guided cancer theranostics. In addition, phantom and in vivo experimental tests were performed to inspect and compare the imaging depth and signal-to-noise ratio (SNR) between the two NIR biological windows. Interestingly, we discovered that a higher SNR was obtained in the NIR-II window than that in the NIR-I window. Meanwhile, the multispectral imaging results also demonstrated that the imaging contrast and penetration depth in the NIR-II window were also significantly improved as compared to those from the NIR-I window.
研究领域:
生物医学工程
·
肿瘤学
·
影像学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Henghua Zhang,Qianbin Dong,Yaping Tang,Jialing Wu,Wenjian Bi,Yue Gao,Jiabang Wang,Hui Yang
In this work, we proposed a novel strategy for the conversion and storage of photothermal energy. This strategy combined hydrothermally prepared CuS/rGO with commercial epoxy resin adhesives. The light-capturing capability of CuS and fast electron transfer rate of rGO was harnessed to endow the modified resin with photothermal conversion capability. Using an inorganic PCM as the energy-storage medium and melamine foam as its support carrier, a form-stabilized composite phase-change material with a latent heat of phase change of 233.7 J/g and a phase-change temperature of 48.7 °C was obtained. In addition, the pre-prepared MER was coated onto the surface of the CPCM . Its purpose was to utilize the photothermal conversion and waterproof properties of modified resins to store solar energy in the internal phase-change materials, while alleviating the leakage problem during the phase-change process of inorganic salt hydrate phase-change materials in the past. The leakage tests showed that the 1.0 mm thick MER provided excellent protection against leakage, significantly reducing leakage of the liquid phase and moisture escape. The composite phase-change material CPCM/MER demonstrated satisfactory results in photothermal conversion experiments. 2% CuS/rGO addition to CPCM/MER can complete the phase change. The samples also showed good stability in the cycling tests. After 100 cycles of testing, the latent heat of the CPCM only decreased by 5.13%. According to the FT-IR results, the CPCM also possessed chemical stability. In this study, a CPCM/MER was successfully prepared, extending the practical application of traditional inorganic phase-change materials in the field of solar energy storage.
研究领域:
材料科学
·
能源工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）