INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2014
·
IF 2.93
Qizhao Wang,Guoxia Yun,Yan Bai,Ning An,Yutao Chen,Rongfang Wang,Ziqiang Lei,Wenfeng Shangguan
TiO 2 photocatalysts loaded CuS and NiS as co-catalyst were prepared by hydrothermal approach and characterized by XRD , UV–visible DRS , BET, XPS, SEM and TEM. When TiO 2 was loaded MS as co-catalyst, it showed higher photocatalytic activities for splitting water into hydrogen in methanol aqueous solution under 500 W Xe lamp. Among the photocatalysts with various compositions , the maximum evolution of H 2 obtained from 5 wt% CuS – 5 wt% NiS – TiO 2 sample was about 800 μmol h −1 , which was increased up to about twenty-eight times than that of TiO 2 alone. It was proven that CuS, NiS can act as effective dual co-catalysts to enhance the photocatalytic H 2 production activity of TiO 2 .
研究领域:
材料科学
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能源科学
✓ 已验证
DOI
高影响因子
Frontiers in Pharmacology
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2022
·
IF 5.988
Ming Ying,Qin Li,Jingbo Wu,Yihang Jiang,Zhourui Xu,Mingze Ma,Gaixia Xu
Breast cancer is characterized by the uncontrolled proliferation of breast epithelial cells under the action of a variety of carcinogens. Although HER2-inhibitors were currently applied for HER2-positive breast cancer patients, they didn’t work for patients with resistance to HER2-targeted anti-cancer drugs. In this work, we prepared novel CuS@BSA-NB2 nanoparticles (NPs) for breast cancer photothermal therapy (PTT). The NPs had good biocompatibility due to the Bovine Serum Albumin (BSA) encapsulating and excellent targeting to HER2 because of nanobody 2 (NB2). Under 808 nm laser irradiation, CuS@BSA-NB2 NPs had high photothermal conversion efficiency and photothermal stability. Meanwhile, we constructed a stable cell line of MDA-MB-231/HER2 with a high expression of HER2 protein. Immunofluorescence and ICP-MS assays showed that CuS@BSA-NB2 NPs can be specifically enriched and be ingested in MDA-MB-231/HER2 cells. Furthermore, CuS@BSA-NB2 NPs had shown a more significant photothermal treatment effect than CuS@BSA under certain treatment conditions for MDA-MB-231/HER2. In addition, the cytotoxicity assay demonstrated that CuS@BSA-NB2 NPs had a low toxicity for MDA-MB-231/HER2 cells. The above results suggested that CuS@BSA-NB2 NPs were great photothermal therapeutic agents to reduce the malignant proliferation of breast epithelial cells and have potential for breast cancer therapy.Keywords: CuS@BSA-NB2 nanoparticles, photothermal therapy, HER2, NB2, MDA-MB-231/HER2
研究领域:
癌症研究
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纳米技术
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治疗学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CRYSTENGCOMM
·
2020
·Vol. 22
·期 11
·2060-2066
·
IF 3.117
Yi Xie,Md Mushfiqure Rahman,Shefiu Kareem,Hao Dong,Fen Qiao,Wei Xiong,Xiaoqing Liu,Neng Li,Xiujian Zhao
In this work, we have established a facile wet-chemical procedure for depositing CuS nanocrystals (NCs) on layered MXenes with efficient photocatalytic activity. Multilayered and few-layered MXenes are respectively achieved by etching MAX in the presence of HF solution and by subsequent intercalating the as-synthesized multilayered Ti3C2Tx with tetramethylammonium hydroxide solution (TMAOH). The CuS/MXene nanocomposites are then prepared by an in situ reaction of sulfur with copper precursors. A unique and simple ligand exchange technique is explored to convert the resulting CuS/MXene nanocomposites to the water phase in order to investigate the photocatalytic activity of the resulting samples. Compared with the pristine MXene and CuS, the CuS/MXene nanocomposite displays higher photocatalytic activity for H2 generation under the illumination of simulated sunlight. The CuS-deposited few-layered MXene demonstrates the highest photocatalytic activity among all the samples. The H2 generation rate of the CuS-deposited few-layered MXene can reach 4.245 μmol g−1 h−1, which is more than 1.42 and 1.49 times higher than that of pure CuS and MXene, respectively. This work might pave the way to a facile and general approach to modulate 0D/2D nanocomposites and heterostructures for promising applications in energy-related fields.
研究领域:
材料科学
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纳米技术
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
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2016
·Vol. 6
·期 87
·84493-84499
·
IF 3.289
Yi-Biao Shao,Long-Hao Wang,Jian-Hua Huang
ZnS/CuS nanotubes are synthesized by using ZnO nanorods as the precursor, followed by sulfuration and subsequent cation exchange reaction. The deposition of CuS on ZnS nanotubes are confirmed by EDS analysis, XPS and UV-Vis diffuse reflectance spectroscopy. HRTEM images clearly display the heterojunctions between ZnS and CuS nanoparticles. ZnS/CuS nanotubes exhibit good photocatalytic activity for H2 generation without cocatalysts under visible light irradiation (λ > 420 nm). The H2 generation rate depends on the CuS content in the ZnS/CuS nanotubes. The highest H2 generation rate is 85 times higher than that of copper-free ZnS tubes. The highly improved performance for H2 evolution is supposed to originate from the formation of heterojunctions between ZnS and CuS nanoparticles.
研究领域:
材料科学
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2018
·
IF 3.235
Qiufeng Lan,Qingyi Li,Xueyan Zhang,Zhidong Chen
A novel electrochemiluminescence (ECL) system that consists of the copper sulphide (CuS) film and K 2 S 2 O 8 was prepared and used for detecting crystal violet in aqueous solutions. The CuS film was a luminescent semiconductor material, which was modified on glassy carbon electrode (GCE) via one-step electrodeposition . To enhance the ECL intensity, K 2 S 2 O 8 was added into the solution. The morphology and composition of the modified electrodes were analyzed with scanning electron microscope, energy-dispersed spectrum, transmission electron microscope, high resolution transmission electron microscopy , X-ray diffraction and Raman spectroscopy. Electrochemical impedance spectroscopy (EIS) was studied for different electrodeposition time. Under the optimal conditions, the ECL intensity of the quenching value (ΔECL) versus the logarithm of the concentration of crystal violet was linear over a concentration range from 5.0 × 10 − 8 to 1.0 × 10 − 5 mol L − 1 ( r = 0.9926) and the limit of detection (LOD) was up to 3.2 × 10 − 9 mol L − 1 .
研究领域:
分析化学
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环境科学
✓ 已验证
DOI
高影响因子
Carbon Neutrality
·
2024
·Vol. 3
·期 1
·1-20
·
IF 0
Guo Yafei,Gao Yuxuan,Guo Benshuai,Luo Yangna,Zhao Guoyang,Sun Jian,Li Weiling,Wang Ruilin,Zhao Chuanwen
Electrochemical CO 2 reduction (ECR) to value-added products is regarded as a sustainable strategy to mitigate global warming and energy crisis, and designing highly efficient and robust catalysts is essential. In this work, transition metal sulfides (TMS)-decorated CuS microflower-like structures were prepared via the one-pot hydrothermal synthesis method for ECR to CO, and the influence of TMS doping on ECR performance was demonstrated. Characterization of the catalysts was performed using XRD, FESEM-EDS, N 2 physisorption, and XPS, revealing the successful loading of TMS, the formation of microflower-like architectures and the generation of sulfur vacancies. Electrochemical tests demonstrated that doping ZnS, Bi 2 S 3 , CdS and MoS 2 improved the intrinsic CO 2 reduction activity of the CuS catalyst. Particularly, the MoS 2 -CuS composite catalyst with imperfect petal-like structure showed uniform distribution of edge Mo sites, which worked synergistically with the formed grain boundaries (GBs) and undercoordinated S vacancy sites in promoting CO 2 activation, stabilizing * COOH adsorption, facilitating * CO desorption, and lowering the energy barrier of the potential-limiting step for improved CO selectivity. The MoS 2 -CuS catalyst achieved a maximum CO selectivity of 83.2% at –0.6 V versus the reversible hydrogen electrode (RHE) and a high CO cathodic energetic efficiency of 100%. At this potential, the catalyst maintained stable catalytic activity and CO selectivity during a 333-min electrolysis process. The findings will offer a promising avenue for the development of efficient and stable catalysts for CO production from ECR.
研究领域:
材料科学
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环境科学
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能源化学
✓ 已验证
DOI
OPTICAL MATERIALS
·
2023
·
IF 3.9
Ning Zhang,Rong Wu,Yu Zhang,Jianyong Yue,Haitong Jing,Shunhang Wei,Fangping Ouyang
The photocatalytic activity of Bi 4 Ti 3 O 12 is limited by the lack of active sites and rapid carrier recombination. In this work, the problems mentioned above are effectively solved by using a dual functional CuS load on the surface of Bi 4 Ti 3 O 12 . The CuS can be used as electron trapping sites to play a role as a cocatalyst, and form p-n junction with the Bi 4 Ti 3 O 12 under irradiation through the properties of p-type semiconductor. The dual functionality of CuS effectively promotes carrier separation and enhances the photocatalytic degradation activity. The photocatalytic rate of Bi 4 Ti 3 O 12 with optimal loading amount of CuS is ∼1.8 and ∼2.7 times as high as that of the Bi 4 Ti 3 O 12 and the CuS, respectively. The photocatalytic mechanism of the Bi 4 Ti 3 O 12 –CuS system is investigated in detail.
研究领域:
材料科学
·
环境科学
·
催化
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2025
·
IF 4.7
Sain Bux Jamali,Tauqeer Haidar Qamar,Sibt ul Hassan,Khadija kousar,Pengkun Xia,Nouman Ahmed,Shakeel Ahmad,Ijaz Ahmad,Shengxiang Huang,Lianwen Deng
Developing advanced electromagnetic wave-absorbing materials capable of operating across multiple frequency bands remains a significant challenge. However, such materials have the potential to reform electromagnetic interference mitigation and communication technologies. Herein, a hydrothermal method was proposed to synthesize 3D CuS/ZnS snowflakes for microwave absorption. Experimental results demonstrate that 3D CuS/ZnS composites exhibit selective absorption of electromagnetic waves in multiple frequency bands. The surface morphology of these heterostructures significantly contributes to their microwave absorption properties in the X, and Ku bands. Notably, the reflection loss (RL) peak value of -43.60 dB and an effective (EAB) of 5.1 GHz were achieved at an absorber thickness of 2.7 mm. The synergistic interplay among various dielectric loss such as dipole and interfacial polarization was investigated to clarify the nanocomposite’s contribution to its superior electromagnetic wave absorption capabilities. Additionally, the radar cross section (RCS) of the absorber samples was calculated using CST Studio Suite, confirming the effectiveness of the absorbent coating in reducing RCS at various angles. It offers valuable insights into the development of advanced materials for electromagnetic absorption, potentially leading to technological advancements in practical applications such as radar cross section reduction.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2022
·
IF 6.371
Hao Guo,Junye Zhang,Fan Yang,Mingyue Wang,Tingting Zhang,Yanrui Hao,Wu Yang
Metal-organic frameworks (MOFs) have ordered porous structure and intriguing properties for supercapacitors , however, poor conductivity and cycle stability limits their application. To solve these problems, hence, a simple strategy is proposed, by which MOFs are in-situ grown in the porous conductive p-MXene substrate. And then, along with the introduction of CuS, the grown Ni-MOF is derived to Ni 3 S 4 , which is more stable and more electrochemically active. Due to higher contact area, excellent synergistic effect and more exposed active sites, the prepared sandwiched p-MXene@Ni 3 S 4 /CuS nanostructure displays a big specific capacitance (1917 F·g −1 ) and superior cycling performance (91.2%@30000). What’s more, the assembled p-MXene@Ni 3 S 4 /CuS//AC asymmetric device delivers a high energy density of 87.62 Wh·Kg −1 at the power density of 775.02 W·Kg −1 , suggesting that this material provides a brilliant candidate for energy storage.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Progress in Natural Science-Materials International
·
2012
·
IF 1.099
Delong Li,Chunxu Pan
A process to fabricate a kind of novel micro–nano scaled TiO 2 /CuS composite fibers by electrospinning technique and chemical precipitation method was developed in the present study. The microstructures and photoelectronic properties of the fibers were characterized using SEM, FT-IR, UV–vis and fluorescence spectroscopy. The results revealed that the TiO 2 portion in the composite fibers was a mixture rutile and anatase phases while TiO 2 and CuS had been fully composite. The fibers had smooth surface with a diameter of 50–300 nm. Comparing with pure TiO 2 fiber, the TiO 2 /CuS micro–nano-scaled composite fibers exhibited a strong absorption in the visible light region and the efficiency of photo-induced charge separation were enhanced. This composite system is of widely potential applications in the areas such as solar cells, supercapacity, photocatalysis, etc.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2022
·
IF 8.907
Ruiqi Li,Jiaxiang Tian,Wencong Wu,Qiang Wang,Chunhong Zhang,Changqing Zhou,Lixue Yang
It is imperative to design and fabricate a high-performance free-standing electrode to meet the demand for flexible energy-storage devices with the development of wearable and portable electronics. CuS is an impressive candidate as an ideal pseudo-capacitance material due to its high theoretical capacity, easy preparation and wide source of raw materials. However, the low conductivity of CuS limits its application. Herein, polyaniline (PANI) was coated on CuS @ functional carbon cloth (fCC) to address the inherent defects of CuS using a facile polymerization procedure. Nano-scale PANI arrays with excellent conductivity grown on super-hydrophilic fCC provide a superior electroactive surface and facilitate electron transfer and electrolyte diffusion, which enhance the electrochemical performance of free-standing electrode. The as-prepared PANI/CuS@fCC electrode exhibits outstanding areal capacitance of 2167.2 mF cm −2 at 0.5 mA cm −2 , impressive capacitance retention rate (89.2 %) after 5000 cycles at 5 mA cm −2 , and satisfactory mechanical properties and flexibility. The assembled symmetrical supercapacitor also exhibits significant rate capacity with a specific capacitance of 816.4 mF cm −2 , a high energy density of 0.268 mW h cm −2 at 0.5 mW cm −2 and stable cycle performance with a capacitance retention rate exceeding 98 %. This study provides an effective strategy to fabricate advanced and flexible supercapacitor electrode.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
DOI
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2024
·
IF 5.5
Li Feng,Yanyan Liu,Yuxue Shan,Shuao Yang,Lanting Wu,Tianyu Shi
Background Ciprofloxacin (CIP) is a broad-spectrum antibacterial agent. Its extensive use has led to high frequency detection in various water environments, resulting in environmental pollution. The peroxymonosulfate-based advanced oxidation processes (PMS-AOPs) is a promising method for the removal of organic pollutants due to its low cost and high redox potential. Methods Magnetic CuS/MnFe 2 O 4 composites were successfully prepared using hydrothermal and solvothermal methods. The catalysts were characterized by XRD, SEM, TEM and VSM, and the degradation efficiency and mechanism of CIP by CuS/MnFe 2 O 4 /PMS system were investigated. Significant findings The results demonstrated that the magnetic CuS/MnFe 2 O 4 composites exhibited superior catalytic performance than pure CuS and pure MnFe 2 O 4 . Under optimized degradation conditions (CuS/MnFe 2 O 4 =15 mg/L, PMS=1 mM, CIP=20 mg/L, initial pH = 5.89, T = 25 ℃), 98.9 % of CIP was degraded within 60 min. Metal ions (Cu, Mn, Fe) on the catalysts surface played an important role in activating PMS, whereas low-sulfur species (S 2− and S n 2− ) promoted the Cu(II)/Cu(I), Mn(III)/Mn(II) and Fe(III)/Fe(II) cycles to accelerate the generation of free radicals. Additionally, S O 4 • − and 1O 2 were considered to be important reactive species in the CuS/MnFe 2 O 4 /PMS system. Finally, the magnetic CuS/MnFe 2 O 4 composites exhibited excellent recyclability and universality.
研究领域:
环境科学
·
化学工程
✓ 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）