NANOTECHNOLOGY
·
2018
·Vol. 29
·期 18
·185602
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IF 3.404
Zhen Hu,Qing Shao,Yudong Huang,Long Yu,Dayu Zhang,Xirong Xu,Jing Lin,Hu Liu,Zhanhu Guo
The interfacial microcracks in the resin matrix composites are difficult to be detected and repaired. However, the self-healing concept provides opportunities to fabricate composites with unusual properties. In the present study, photothermal conversion Ag–Cu2S nanoparticles were immobilized onto poly(p-phenylene benzobisoxazole) (PBO) fibers via a polydopamine chemistry. Benefitting from the photothermal effects of Ag–Cu2S, the obtained PBO fibers (Ag–Cu2S–PBO) efficiently converted the light energy into heat under Xenon lamp irradiation. Then, single PBO fiber composites were prepared using thermoplastic polyurethane as the matrix. It was found that the interfacial damage caused by single fiber pull-out was simply self-healed by Xe light irradiation. This wonderful interfacial damage self-healing property was mainly attributed to the in situ heating generation via photothermal effects of Ag–Cu2S in the composite interface. This paper reports a novel strategy to construct advanced composites with light-triggered self-healing properties, which will provide inspiration for preparing high performance composite materials.
研究领域:
材料科学
·
纳米技术
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DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Rouyan Guo,Congcong Dang,Yiping Liu,Guangqi Zhang,Lingti Kong,Liancheng Zhao,Liming Gao
Developing an efficient and highly catalytic cathode is crucial to the advancement of rechargeable Li-O 2 batteries for utilizing their high theoretical energy density. However, due to the sluggish kinetics of the oxygen-involved reactions, the problems of short lifespan and large overpotential prevent their widely practical applications. Thus, cathodes are designed to enhance the adsorption capacity for oxygen and modulate the electron mobility for Li-O 2 batteries. Herein, NiAl layered double hydroxide (LDH)@Cu 2 S heterostructure with extremely large specific surface area and numerous exposed active sites is designed, combining snowflake-shaped Cu 2 S and dispersed two-dimensional layered NiAl LDH. Excitingly, NiAl LDH@Cu 2 S cathode exhibited a large specific discharge capacity of 14,519 mAh g -1 at a current density of 100 mA g -1 and prolonged cycle life up to 275 cycles at 300 mA g -1 with a cut-off capacity of 600 mAh g -1 , accompanied by a low discharge overpotential of 0.14 V at the first cycle. Theoretical calculations demonstrated that the excellent electrochemical performance stems from the optimized adsorption energy of the NiAl LDH@Cu 2 S structure for reactants and intermediate products, which reduces the energy barrier of discharge/recharge process. Therefore, benefited from the modulation of electron mobility and the promoted adsorption of oxygen, NiAl LDH@Cu 2 S heterojunction can display remarkable cycle stability and reversibility as the cathode catalyst, suggesting great application prospects for enhanced Li-O 2 batteries.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2025
·
IF 8.3
Liandong Li,Ziqi Qiao,Bing Lin,Hailong Zhang,Yingying Wang,Zhe Sun,Yiping Hu,Denghao Ouyang,Shiyu Li,Hangzhou Wang,Junlei Tang,Caineng Zou
Electrolysis of neutral saline wastewater/seawater enables sustainable hydrogen production but faces sluggish hydrogen evolution reaction (HER) kinetics and poor durability in chloride-rich media. Herein, a novel Cu 2 S/Amorphous/Cu–Ni–Mo heterostructure electrocatalyst, prepared by electrodeposition and atomic layer deposition (ALD), was introduced to address these challenges. The electrode was synthesized by electrodepositing a Cu–Ni–Mo coating onto a stainless steel substrate, followed by in-situ sulfurization using ALD technology to form an amorphous layer, yielding a heterostructure with optimized interfacial properties. This heterostructure electrode exhibited an overpotential of 63.29 mV at −10 mA cm −2 and maintained stable operation at −100 mA cm −2 for over 180 h in 0.5 mol/L NaCl +1 mol/L phosphate buffered saline (PBS). A 10 cm × 10 cm electrode was successfully fabricated using this scalable method, which exhibited uniform morphology and stability exceeding 240 h. This work advances HER performance and scalability in neutral environments, facilitating industrial-scale electrocatalytic hydrogen production.
研究领域:
电化学
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材料科学
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纳米技术
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能量转换
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催化
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环境工程
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DOI
高影响因子
ACS Biomaterials Science & Engineering
·
2023
·
IF 5.8
Vivian Andoh,Wenhui Shi,Shangshang Ma,Keping Chen,Qian Yu
AuCu–Cu2S nanocomposites are unique materials with exceptional properties that have recently received a lot of interest. However, little is known about their potential toxicity in terrestrial organisms and their subsequent effects on the environment. Therefore, it is essential to develop effective methodologies for evaluating AuCu–Cu2S nanocomposites in biological systems. This study reports the biological evaluation of the AuCu–Cu2S nanocomposite from animal and cell entity levels. The Bombyx mori silkworm was used as a model organism to study the effects of different concentrations of AuCu–Cu2S on silkworm development. Transcriptome analysis was also carried out to examine the genetic modulation exerted by the treatment. Moreover, biocompatibility and cytotoxicity of AuCu–Cu2S were evaluated in human bronchial epithelial cells 16HBE, human lung adenocarcinoma, and the insect Spodoptera frugiperda cell sf9 cell lines. The results showed that although AuCu–Cu2S at ≤400 ppm can prolong the eating habit of silkworms and promote the weight of the cocoon layer, there was an increase in silkworm mortality and a decrease in moth formation at a concentration of ≥800 ppm. The genetic regulation by AuCu–Cu2S treatment showed varying effects in the silkworm, primarily related to functions such as transport and catabolism, metabolism of cofactors and vitamins, xenobiotic biodegradation, amino acid, and carbohydrate. 16HBE, PC-9, and sf9 treated with 300 ppm of AuCu–Cu2S showed viability percentages of 60, 20, and 90%, respectively. Thus, AuCu–Cu2S at low concentrations serves as a safe and biocompatible material for the sf9 cell lines but is lethal to 16HBE and PC-9. This research could aid in understanding the biological effects and biocompatibility of AuCu–Cu2S nanocomposites, particularly in the field of biochemistry; however, the mechanisms involved need further exploration.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Hongxia Gao,Xueyan Wu,Yan Lv,Rui Xue,Fanze Meng,Peiqi Jing,Jixi Guo,Xiaogang Zhang
Cu-based compounds are indispensable materials for pseudocapacitors owing to their excellent electrical conductivity and diverse valence states. Their practical performance remains constrained by nanoparticle agglomeration and limited active sites. Herein, a low-temperature pre-oxidation strategy was employed to introduce coal-based carbon surface with abundant C O and = C–H groups, providing uniform anchoring sites for Cu-based compounds. Through flash Joule heating process, these precursors were transformed into a Cu/Cu 2 O/Cu 2 S heterostructure intimately (4.6 s) integrated with the carbon substrate. The lattice defects at the heterostructure promote the adsorption and diffusion of ions, while the coexistence of Cu 0 /Cu + redox pairs enhances reversibility of Faradaic reactions. As a result, the optimized Cu@OMC electrode have good specific capacitance (2041 Fg −1 at 1 A g −1 ) in 6 M KOH. It is assembled into an asymmetric supercapacitor, which has a high energy density of 60.01 Wh kg −1 , a power density of 800.00 W kg −1 , and a specific capacity retention rate of 97.29 % after 10,000 cycles. This study provides a simple and efficient strategy for the preparation of carbon-supported metal compound electrode materials.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2022
·
IF 7.139
Zhiyue Han,Guotong Li,Xin Zeng,Yanli Zhu,Nan Li,Jiatao Zhang,Wanjun Zhao,Qingjie Jiao
A two-step electrochemical method is proposed for the in-situ deposition of copper and synthesis of copper(Ⅰ) sulfide (Cu 2 S) with controllable morphology on nickel foam (NF), and the thus-prepared self-supported Cu 2 S@NF electrodes exhibit excellent performance as bifunctional electrocatalysts . Characterizations with scanning electron microscopy show rock-shape of the deposited copper through potentiostatic method, which can be further sulfurized to microflower morphology by a unique underpotential electrochemical method. The size and amount of the deposits can be adjusted by controlling applied potentials, leading to the optimization of electrocatalytic activity . The Cu 2 S@NF exhibits superior electrocatalytic performance towards HER and OER in 1 M KOH with the low overpotentials of 105 mV and 194 mV at 10 mA/cm 2 , as well as small Tafel slopes of 92.89 mV/dec and 72.81 mV/dec, respectively. This work provides a simple method for the synthesis of efficient catalysts, which can be extended to the fabrication of other transition metal-based electrocatalysts.
研究领域:
材料科学
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电化学
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DOI
高影响因子
DYES AND PIGMENTS
·
2025
·
IF 4.2
Guotao Xiang,Qinyu Xu,Ming Xiong,Zhiyu Yang,Yongjie Wang,Lu Yao,Xianju Zhou,Li Li,Xiaojun Wang,Jiahua Zhang
Photothermal therapy (PTT) integrated with the functionality of temperature self-monitoring has emerged as a prominent research focus in current scientific investigations. In this study, a bifunctional photothermal agent is developed based on the small-size β-NaLuF 4 nanoparticles (NPs) of about 40 nm, which can provide accurate optical thermometry through Nd 3+ -sensitized upconversion (UC) luminescence along with the ability of Cu 2 S-mediated photothermal conversion. The small-size β-NaLuF 4 NPs are synthesized by a sequential layer-by-layer coating strategy, resulting in the generation of β-NaYF 4 @β-NaLuF 4 : 20 % Yb 3+ /2 % Er 3+ @β-NaLuF 4 : 20 % Yb 3+ /2 % Nd 3+ NPs. Then, the temperature sensing performance is realized via the thermally coupled levels of Er 3+ : 2 H 11/2 / 4 S 3/2 under the excitation of 808 nm wavelength. Whereafter, the above NPs suffer from a surface functionalization process with Cu 2 S NPs, endowing the sample with efficient photothermal conversion property, which exhibits an obvious temperature increase from 293 K to 311 K under 808 nm near-infrared (NIR) light irradiation with a power density of 20 mW/mm 2 for 180 s. Meanwhile, an ex vivo experiment further demonstrates that the present NPs can implement efficient photothermal conversion and accurate optical temperature monitoring simultaneously within the biological tissues, while effectively preventing laser-induced overheating effect due to the weak absorption of water molecules for 808 nm NIR light. These findings highlight the promising potential of the prepared NPs for application in cancer treatment, offering a precise and safe approach to PTT with integrated temperature monitoring.
研究领域:
材料科学
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纳米技术
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生物医学工程
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光学
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诊疗一体化
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DOI
高影响因子
DALTON TRANSACTIONS
·
2019
·Vol. 48
·期 10
·3327-3337
·
IF 4.052
Jingjing Shi,Shuangde Li,Fengming Wang,Lina Gao,Yanmei Li,Xiaorang Zhang,Jun Lu
Zinc cadmium sulfide solid solution (ZnxCd1−xS) photocatalysts have received significant attention in energy and environmental applications because of their wide and strong visible light absorption range. However, the high photogenerated electron–hole pair recombination rate is an innate problem for their application. In this study, Cu2S/Zn0.67Cd0.33S (CZCS) nanosheet heterojunctions were fabricated by the in situ topotactic hydrothermal transformation of CuZnCdAl layered double hydroxide (LDH) precursors. Structural and morphological characterization indicated that the CZCS nanosheets were 2D/2D atomic-level in-plane heterojunctions with matched crystalline orientation because of their intergrowth structure originating from the topotactic sulfurization of CuZnCdAl LDH precursors. This in-plane intergrowth structure enhanced the separation of photogenerated electron–hole pairs based on a direct Z-scheme mechanism, which, in addition to providing a wide light absorption range and appropriate flat band potential, endowed excellent photocatalytic hydrogen production at the rate of 15.27 mmol h−1 g−1 (about 3.82 times that of pure Zn0.67Cd0.33S) from water splitting under visible light irradiation without the additive Pt cocatalysts. This photocatalyst with a superior photocatalytic activity and cycling stability can serve as a hopeful candidate for applications in the energy and environment field.
研究领域:
材料科学
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能源与环境科学
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DOI
PubMed
高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-14
·
IF 17.694
Baimanov Didar,Wang Jing,Zhang Jun,Liu Ke,Cong Yalin,Shi Xiaomeng,Zhang Xiaohui,Li Yufeng,Li Xiumin,Qiao Rongrong,Zhao Yuliang,Zhou Yunlong,Wang Liming,Chen Chunying
How soft corona, the protein corona’s outer layer, contributes to biological identity of nanomaterials is largely because capturing protein composition of the soft corona in situ remains challenging. We herein develop an in situ Fishing method that can monitor the dynamic formation of protein corona on ultra-small chiral Cu 2 S nanoparticles (NPs) allowing us to directly separate and identify the corona protein composition. Our method detects spatiotemporal processes in the evolution of hard and soft coronas on chiral NPs, revealing subtle differences in NP − protein interactions even within several minutes. This study highlights the importance of in situ and dynamic analysis of soft/hard corona, provides insights into the role of soft corona in mediating biological responses of NPs, and offers a universal strategy to characterize soft corona to guide the rational design of biomedical nanomaterials.
研究领域:
纳米技术
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生物医学工程
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分析化学
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分子生物学
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PubMed
高影响因子
Journal of Materials Chemistry A
·
2024
·Vol. 12
·期 27
·16592-16604
·
IF 10.7
Yajuan Zhang,Hui Xu,Xingwei Shi,Yuanhai Bao,Yong Chen
Designing non-precious-metal catalysts with performance matching that of precious-metal catalysts is crucial to the development of clean hydrogen energy. Herein, construction heterostructures and heteroatom doping strategies have been employed to construct an amorphous CoPB deposited on a crystalline Cu2S/Ni3S2 nanosheet (CoPB@Cu2S/Ni3S2) non-precious-metal electrocatalyst for water electrolysis. The introduction of Cu2+ successfully gave rise to an Ni3S2/Cu2S crystal–crystal heterostructure, on which the coating of the amorphous CoPB layer finally achieves a triple heterostructure by an electroless plating technique. The optimized electronic structure and geometry allow the CoPB@Cu2S/Ni3S2 catalyst to show a competitive catalytic performance, which requires just 25 mV of overpotential for the HER and 247 mV for the OER to achieve a current density of 10 mA cm−2. When loaded into an AEM water electrolyzer, the CoPB@Cu2S/Ni3S2‖CoPB@Cu2S/Ni3S2 cell just requires 1.84 V cell voltage to offer a large current density of 2000 mA cm−2, running for more than 1000 h without significant degradation in performance. This work demonstrates the benefit of the integration of the heterostructures and heteroatom doping strategies to prepare catalysts and provides a scientific basis for the development of high-performance non-precious-metal water electrolysis catalysts.
研究领域:
材料科学
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电化学
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高影响因子
RSC Advances
·
2025
·Vol. 15
·期 18
·14463-14476
·
IF 4.6
Huu Phuc Dang,Le Tran,Le Huu Bao,Hanh Ngoc Thi Le
Developing cost-effective high-performance counter electrodes (CEs) is critical for improving the efficiency of quantum dot-sensitized solar cells (QDSSCs). In this study, a CNT@rGO@Cu2S composite CE was synthesized using a hydrothermal method, incorporating carbon nanotubes (CNTs), reduced graphene oxide (rGO), and Cu2S nanoparticles to enhance the charge transfer and catalytic activity. Structural characterization (XRD, Raman, FESEM, and HRTEM) confirmed the successful integration of the Cu2S nanoflowers within the rGO matrix. CNTs formed a conductive network that prevented rGO restacking and facilitated electron transport. Electrochemical analysis (CV, EIS, and Tafel polarization) demonstrated the superior electrocatalytic activity of the 6% CNT@rGO@Cu2S composite, exhibiting the highest exchange current density (J0) and lowest charge transfer resistance (Rct1), indicating efficient polysulfide redox reactions. When employed in QDSSCs with a CdS/CdSe co-sensitized photoanode, the 6% CNT@rGO@Cu2S CE achieved a power conversion efficiency (PCE) of 5.965%, surpassing those of rGO@Cu2S (5.322%) and conventional Pt-based CEs (1.96%). The superior performance is attributed to the optimized Fermi level alignment with the redox couple, enhanced charge mobility due to the CNTs, and improved electrolyte penetration.
研究领域:
材料科学
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能源科学
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纳米技术
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DOI
PubMed
高影响因子
ENVIRONMENTAL TECHNOLOGY
·
2023
·
IF 2.8
Wenyan Wang,Yunlan Xu,Dengjie Zhong
Ni-EDTA is widely present in electroplating effluents. It cannot be effectively removed by traditional wastewater treatment methods due to its chemical stability. In this study, copper sulphide/cuprous sulphide doped zero-valent iron@carbon (ZVI@C/CuS/Cu2S) was prepared to active peroxymonsulphate (PMS) to decomposition Ni-EDTA. The ZVI@C/CuS/Cu2S + PMS process shows excellent performance under neutral or even alkaline conditions. This is due to the acceleration of ZVI electron transport by CuS/Cu2S, the autocatalysis of CuS/Cu2S itself, and the synergistic effect of CuS/Cu2S and Ni-EDTA. The removal efficiency of 50 ppm Ni-EDTA electroplating effluents reached 99.53% at 10 min, and the discharge water can meet the Chinese emission standard. The influences of the main parameters such as initial pH value, catalyst, PMS and initial Ni-EDTA concentration on removal efficiency was systematically investigated.
研究领域:
环境科学
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材料科学
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DOI
PubMed
高影响因子
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