COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Jifan Yang,Yuxuan Yang,Fei Long,Xuan Li,Fei Sun,Chenhao Qian,Xinyu Yan,Tong Zhou,Lei Liu
AlN ceramic is the potential substrate for high-performance printed circuit board with the rapid development of electronic industry due to the superior thermal and electrical property, while its metallization still faces the issues of thermal stress and weak interface bonding with existing technology. Herein, a convenient design is proposed to achieve the Cu deposition on the surface of AlN substrate, the TiO 2 containing photocatalytic intermediate layer is prefabricated on AlN substrate with silica and titania mixed sol, and induces the autocatalytic deposition of electroless copper plating under ultraviolet irradiation. Compared with Cu deposition with Pd activation treatment, the bonding strength between Cu layer and AlN substrate is significantly enhanced with the intermediate layer, this is ascribed to the formed nano-porous microstructure of the sintered intermediate layer facilitating the penetration of plating bath, and the mechanical anchoring effect derived from the interlocking microstructure between Cu layer and intermediate layer contributes to the improved bonding strength. This new method realizes the metallization of AlN ceramic with high interfacial bonding strength and low cost compared with the traditional joining technology, and provides a potential reference for the surface metallization of inert material.
研究领域:
材料科学
·
电子工程
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产品关联
DOI
高影响因子
MOLECULES
·
2025
·Vol. 30
·期 2
·225
·
IF 4.6
Jieqiong Wang,Jingyi Yang,Zezheng Bing,Yuanyuan Gao,Tao Yang,Qiaoyun Liu,Meng Zhang,Zhongyi Liu
Controllable hydrogenation of carbonyl groups (C=O) is crucial for converting furfural into high-value furfuryl alcohol. Instead of traditional impregnation method, a novel Cu-based catalyst (Cu/SiO2) is prepared using the ammonia evaporation method (AE) for the efficient hydrogenation of furfural to furfuryl alcohol under mild conditions. At the reaction conditions of 90 °C and 1 MPa H2, the 5Cu/SiO2-AE sample showed optimal performance with higher turnover frequency (36.0 h−1) and furfuryl alcohol selectivity (>99.9%). After five cycles, the catalyst recycled still showed a high reaction activity and selectivity for furfuryl alcohol. Characterization results such as XRD, H2-TPR, FT-IR, and XPS showed that the excellent catalytic performance of 5Cu/SiO2-AE catalyst was attributed to the formation of layered copper silicate and the high dispersion of Cu species. Furthermore, the formation of layered copper silicate resulted in a higher ratio of Cu+/(Cu0+Cu+) at a reduction temperature of 250 °C, which was also responsible for the optimum activity. This work showed the importance of controllable synthesis of layered copper silicate in improving the catalytic performance of copper-containing catalyst.
研究领域:
催化化学
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材料科学
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产品关联
DOI
PubMed
高影响因子
ISIJ INTERNATIONAL
·
2024
·
IF 1.6
Zhihao Lu,Xiangwei Liao,Chenglin Zhao,Deli Shang,Haiwei Wang,Chengjun Liu
This paper proposed an innovative electrochemical method for copper recovery from spent sulfide slag (Na2S-FeS-Cu2S), generated during copper removal from iron-based melts. It aims to reduce the high decopperization agents' consumption caused by low copper distribution ratio during the copper removal process, address the cost issues by recycle of slag and recovery of copper, and expand the application potential of the emerging copper removal method using the sulfide slag systems. The feasibility of electro-recovery of copper is verified by cyclic voltammetry tests and potentiostatic electrolysis experiments. The results show that in the Na2S-FeS-Cu2S melt, although copper cannot be reduced alone without reducing iron, rough separation can be achieved by controlling the temperature. The current efficiency of Cu+ reduction in the molten sulfide is about 9.1% due to electronic conduction in the sulfide melt, which needs further improvement. The slag treated by the innovative electrochemical process can be reused, as the XRD results show that it has a similar composition to the primary slag unused.
研究领域:
冶金工程
·
环境科学
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产品关联
DOI
高影响因子
Agronomy-Basel
·
2024
·Vol. 14
·期 6
·1302
·
IF 3.3
Xianghan Cheng,Feifei Liu,Peng Song,Xiaolei Liu,Qin Liu,Taiji Kou
The changes in biomass (including yield), copper (Cu) concentration, and the accumulation of wheat (Triticum aestivum. L) in response to soil Cu pollution under nighttime warming had still not been explored. Hence, this study was carried out, and these variations were analyzed from a physiological perspective. Pot trials were performed at two levels of ambient temperatures (no-warming (NT) and average nighttime warming of 0.28 °C (WT)) and two levels of soil Cu concentrations (control check without Cu application (CK) and 100 mg/kg Cu application (Cu)). Soil was collected from the carbonate cinnamon soil region of central China. The warming effects of the passive nighttime warming system were prominent, and the average increment was 0.28 °C. Antioxidant enzyme activities were promoted by warming (p< 0.05) and Cu. The highest yield was achieved in NT-Cu, mainly attributed to relatively strong root activity and photosynthesis caused by supplemental Cu, but the Cu concentration in its grains was close to the threshold (10 mg/kg) for Cu concentration in foodstuff and could present a potential food safety risk. Though nighttime warming did not increase the total biomass and yield of wheat, it decreased the Cu accumulation of wheat grown in Cu-contaminated soil, especially in grains. Moreover, WT-CK and WT-Cu increased the Cu concentration in the roots and glumes and reduced the Cu concentration in grains by 13.09% and 55.84%, respectively, probably because of a lower transpiration rate. Among them, the Cu concentration of grains in WT-Cu was the lowest and significantly lower than other applications. Our findings reveal that nighttime warming has the potential to reduce the Cu risk of grains in wheat grown in the Cu-contaminated carbonate cinnamon soil region of central China and could then provide a theoretical reference for risk assessment of food quality for wheat subjected to dual stress from nighttime warming and Cu pollution.
研究领域:
植物生理学
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环境科学
·
农业科学
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产品关联
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2015
·
IF 4.513
Zhi-Chao Liu,Jian-Wen Qi,Chun Hu,Li Zhang,Wei Song,Ru-Ping Liang,Jian-Ding Qiu
Copper is a highly toxic environmental pollutant with bioaccumulative properties. Therefore, sensitive detection of Cu 2+ is very important to prevent over-ingestion, and visual detection is preferred for practical applications. In this work, we developed a simple and environmental friendly approach to synthesize hyperbranched polyethyleneimine-protected copper nanoclusters (hPEI-Cu NCs) with great stability against extreme pH, high ionic strength , thiols etching and light illumination, which were then conjugated to the surface of silica coated CdSe quantum dots (QDs) to design a ratiometric fluorescence probe. In the presence of different amounts of Cu 2+ ions, the fluorescence of Cu NCs can be drastically quenched, while the emission from QDs stayed constant to serve as a reference signal and the color of the probe changed from yellow-green to red, resulting in ratiometric and visualization detection of Cu 2+ ion with high accuracy. The detection limit for Cu 2+ was estimated to be 8.9 nM, much lower than the allowable level of Cu 2+ in drinking water (∼20 μM) set by U.S. Environmental Protection Agency. Additionally, this probe can be also applied for the determination of Cu 2+ ion in complex real water samples.
研究领域:
分析化学
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环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MATERIALS & DESIGN
·
2016
·
IF 3.997
Tianlin Zhang,Xiadan Yue,Keren Zhang,Jinghao Li,Caiyian Zhu,Lei Zhang,Wei Chen
A polymerizable complex of copper(II) ion with unsaturated quaternary ammonium cation-modified salicylaldoxime ligand was prepared and used to synthesize a novel copper(II) ion imprinted polymers (Cu(II)-IIPs). Elemental analysis (EA), Fourier transform infrared spectroscopy (FTIR), and NMR spectroscopy confirmed the structures of the polymerizable complex and Cu(II)-IIPs. Thermogravimetric analysis (TGA), Brunauer–Emmett–Teller surface area analysis (BET), and scanning electron microscopy (SEM) characterized physical properties and morphologies of synthesized metal complex and corresponding polymers. The effect of pH, contact time, and initial Cu 2 + and SO 4 2 − concentration on the simultaneous adsorption of Cu 2 + and SO 4 2 − ions of Cu(II)-IIPs were investigated. Cu(II)-IIPs showed high hydrophilicity and simultaneously rapid adsorption of Cu 2 + and SO 4 2 − from solution. Moreover, Cu(II)-IIPs displayed highest adsorption capacity in the pH range of 5.0–6.5, the separation factor ( β ) between Cu 2 + with respect to Fe 3 + was 1866, the equilibrium adsorption capacities for Cu 2 + and SO 4 2 − were almost the same and close to 0.13 mmol g − 1 at 25 °C. Stripping experiments revealed that 1.5 mol L − 1 H 2 SO 4 was an effective eluent for desorbing copper (II) ions from Cu(II)-IIPs. In additional, Cu(II)-IIPs exhibited good recyclability and reusability for 5 cycles without deterioration of its selective ion-absorbing capacity.
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
Journal of Water Process Engineering
·
2022
·
IF 7.34
Yueqin Lv,Yaru Liu,Yuan Meng,Wenwen Zheng,Yi Li,He Zhang,Sihui Zhan,Wenping Hu
The development of integrated porous carbon materials based on transition metal oxides for used as catalysts with high efficiency and robust advantages in heterogeneous electro-Fenton like (EF-like) reaction were supposed to be widely used in effectual removing refractory sewage. Herein, an octahedral composite material of Cu + /Cu 0 anchored on nitrogen doping porous carbon (Cu + /Cu 0 -NC-800) was designed. The regulated Cu + /Cu 0 -NC-800 catalyst was efficient for the catalytic oxidation of ciprofloxacin via heterogeneous EF-like reaction, and the degradation efficiency was almost 100% in 120 min with outstanding cyclic stability. Compared to irregular Cu + /Cu 0 -C-800, the regular octahedral structure of Cu + /Cu 0 -NC-800 catalyst was beneficial to exposing more active sites. The excellent redox and electronic transmission capability benefited from the synergistic effect of doped nitrogen and polyvalent copper. What's more, with the assistance of nitrogen doping sites and polyvalent copper (Cu 0 , Cu + and Cu 2+ ) redox reaction, the directional decomposition of H 2 O 2 into hydroxide radical and superoxide radical was realized, consequently boosting the performance in heterogeneous EF-like reaction. Our discovery greatly advanced the practical application value in wastewater treatment .
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Li Sun,Yuanyuan Diao,Yuejin Shan,Yuan Zhi,Hua Zhang,Binlin Dou,Weijia Huang
Based on a normal copper wire, an effective photocatalyst (ACW) for the 4-nitrophenol (4-NP) reduction is successfully synthesized by an in-situ redox method. The constitution of ACW is similar to “ants on a tree”, i.e., dense Au and Cu nanoparticles (NPs) are loaded on the copper wire surface covered by submicro-sized Cu cubes. Employing ACW as photocatalyst, the conversion efficiency of 4-NP can achieve to 100% at 2.5 min and the rate constant for the 4-NP reduction can reach up to 1.45 min −1 . Moreover, ACW exhibits satisfactory reusability for 25 cycles and stability in 12 months. These excellent performance can be attributed to the synergistic effect of Au NPs, Cu NPs and the Cu wire surface covered with submicro-sized cubes. Clearly, the above in-situ redox method provides a facile route to prepare metal NPs-supported bulk photocatalysts. Meanwhile, as-synthesized ACW can be a promising photocatalyst candidate for the practical treatment of 4-NP.
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
IEEE Transactions on Components Packaging and Manufacturing Technology
·
2024
·Vol. 14
·期 7
·1149-1155
·
IF 2.3
Mingming Yi,Wenhui Zhu,Ping Wu,Yiou Qiu,Guoliao Sun,Liancheng Wang
Copper-based conductive inks have been extensively researched due to their low sintering temperature and high anti-oxidation properties for various electrical devices. However, the unstable oxidation properties of copper (Cu) limit its practical application. The existing anti-oxidation methods adopted in copper sintering often reduce copper strength and reliability. Therefore, the study presents a novel copper composite ink comprising copper precursors, copper microparticles, organic protective agents, and antioxidants. The sintering process is simple, requiring only 20 min at
$300~^{\circ }$
C in nitrogen without any additional pressure. As a result, sintered copper with an oxidation rate of only 3.21 wt% was successfully obtained using the mixed ink of copper particles and precursors. The porosity of the sintered copper is 10.69%, which is a 71.77% reduction compared to the copper sintered by using pure copper precursor ink, due to the synergistic effect. Furthermore, the study discusses and analyzes the lattice growth mechanism and synergy mechanism of copper particles and their precursors during copper sintering.
研究领域:
材料科学
·
电气工程
·
化学工程
✓ 已验证
DOI
高影响因子
Cells
·
2025
·Vol. 14
·期 6
·391
·
IF 5.2
Yuhan Fu,Lirui Hou,Kai Han,Chong Zhao,Hongbo Hu,Shutao Yin
Background: Cuproptosis is a form of copper-dependent non-apoptotic cell death. Cancer cells that prefer to use aerobic glycolysis for energy generation are commonly insensitive to cuproptosis, which hinders its application for cancer treatment. Epigallocatechin gallate (EGCG) possesses diverse pharmacological activities. However, the association between EGCG and cuproptosis has not been studied. Methods: The cell viability, proliferation, and cuproptosis-related protein levels were detected to investigate whether EGCG enhances the sensitivity of HCC cells to cuproptosis. The intracellular copper level, related copper metabolism proteins, and gene expression were detected to explore the mechanisms. In addition, a nude mouse xenograft model was established to determine the effects of EGCG on cuproptosis in tumor tissues. Results: The combination of EGCG and copper ionophores significantly enhanced the mortality of HCC cells and heightened the sensitivity of HCC cells to cuproptosis. There was a notable reduction in the expression of copper export protein copper-transporting P-type ATPase (ATP7B). EGCG effectively suppressed metal regulatory transcription factor (MTF1) expression and subsequently hindered the transcriptional regulation of ATP7B. EGCG also facilitated the intratumoral accumulation of copper and augmented susceptibility to cuproptosis in vivo. Conclusions: EGCG can increase the sensitivity of hepatocellular carcinoma cells to cuproptosis by promoting intracellular copper accumulation through the MTF1/ATP7B axis.
研究领域:
肿瘤学
·
分子生物学
·
药理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 30
·1-10
·
IF 2.8
Wang Sanlong,Wan Jiajia,Tong Huijuan,Yu Yang,Zhang Wenqing,Chen Zhenming,Gui Chengmei,Huang Junjun,Li Honglin
To design and fabricate a novel and low-cost electromagnetic interference shielding material with outstanding performance is becoming extremely popular by scientists over the years, owing to increasingly complex proliferation of electromagnetic waves. In this work, the composite construction that included activation of silver nitrate, electroless copper plating (ECP) and annealing for fabricating weaving structure copper tube was reported to alleviate the problem above. The effect of annealing temperature on its electromagnetic shielding performance was investigated as well. Results manifest the metal particle/ligand structure on weaving cotton surface could promote copper particles to be reduced and deposited on its surface, which can generate weaving copper pipes with face-centered cubic structure spontaneously. The resultant composite, i.e. textured copper tube possessed brilliant shielding effectiveness of 25.2 dB. Interestingly, the electromagnetic shielding performance of annealed ECP cotton was firstly enhanced, and then reduced with the increase of annealing temperature. The 200 °C-annealed ECP cotton exhibited a better shielding effectiveness performance, the values are increased by 38.1% to 34.8 dB, in which the reflection and absorption shielding are increased by 39.9% and 6.7% compared to the one of unannealed sample, corresponding power coefficients of reflection, transmission and absorption were 0.2691, 0.0031, 0.7277, owning to the improvement of Cu tube crystallinity and the introduction of Cu 2 O particles acted as scattering center of electromagnetic waves. Therefore, it would provide a promising future tendency from the viewpoint of abundant resources and sustainable development.
研究领域:
材料科学
·
电磁学
✓ 已验证
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2022
·Vol. 169
·期 3
·037529
·
IF 4.386
Bei-Bei Tao,Ning-Ning Wu,Hong-Ding Zhang,Hai-Bo Wang
It is of great importance to integrate two kinds of fluorescent probes in one system to construct ratiometric sensing platform. Inspired by the efficient overlapped spectrum of glutathione-stabilized copper nanoclusters (GSH-CuNCs) and 2, 3-diaminophenazine (DAP), a novel and label-free ratiometric fluorescent sensor has been developed for Cu2+ and kojic acid (KA) detection on the basis of in situ converting o-phenylenediamine (OPD) into DAP by the catalytic oxidation ability of Cu2+. The Cu2+ catalytically generated DAP was served as an energy acceptor to inhibit the fluorescence emission of GSH-CuNCs (energy donor). As a result, the sensitivity and accuracy of the strategy were greatly improved due to the dual-emission reverse change ratiometric profile. The sensing system showed high sensitivity toward Cu2+ in a range of 0.1–50 μM and with a limit of detection of 20 nM. Furthermore, based on the specific coordination interaction between Cu2+ and KA, the ratiometric sensor displayed the range of detection of KA from 0.2 μM to 300 μM with a limit of detection of 50 nM. Thus, the ratiometric method paved a new way for the effective quantification of Cu2+ and KA in real samples, which were closely concerned with human health.
研究领域:
分析化学
·
生物医学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）