JOURNAL OF CATALYSIS
·
2020
·
IF 7.888
Jian Zhang,Yazhe Zhang,Jieqiong Zhao,Zhe An,Yanru Zhu,Xin Shu,Hongyan Song,Xu Xiang,Xiaodan Ma,Jing He
Oxidative carbonylation has attracted broad interest from both academia and industry in recent years. Oxycarbonylation of ethanol to diethyl carbonate (DEC) has been of great challenge due to the difficulty in the simultaneous activation of ethanol and CO. This work reports a heterogeneous Cu-Pd pair catalysis for simultaneous activation of ethanol and CO, affording a selectivity of 85.4% to DEC and a space–time yield (STY) of up to 207 mg∙g −1 ∙h −1 . Well distributed Cu-Pd pair affords more Cu (I) sites, promoting CO activation and the followed insertion to adsorbed ethanol. Further increasing ratio of Cu (I) species via the pre-treatment of catalyst with CO and ethanol promotes simultaneously the activation of ethanol and CO, affording a STY of 325 mg∙g −1 ∙h −1 of DEC.
研究领域:
化学工程
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催化科学
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DOI
高影响因子
ChemistrySelect
·
2026
·Vol. 11
·期 21
·e73559
·
IF 2.3
Xin Long,Shijie Zhou,Dong Liang,Mingdong Zhou,Liwei Sun,Yuehui Li
Room-temperature plasma-assisted catalysis represents an important pathway for CO 2 valorization. Rational design of catalysts tailored to plasma environment holds significant potential for improving catalytic efficiency. Unprecedentedly, we report a coordination-engineering strategy to fabricate the Fe/Cu mix-metal organic framework (Fe/Cu-MOF) catalysts for plasma-driven CO 2 dissociation into CO. Precise modulation during synthesis revealed an optimal Fe:Cu ratio of 0.44:0.56 to generating synergistic active sites favorable for CO production. The in situ-formed FeCu-based catalyst exhibited exceptionally high CO space-time yield of 32.3 mmol·gcat-1·h-1 under room-temperature plasma conditions. The coordination-tailored electronic structure enables the dynamic variations in the oxidation states of Fe/Cu upon plasma activation, thus facilitating sustained CO 2 activation. This work establishes atomic-level control of bimetallic sites as a powerful paradigm for plasma-catalytic systems. Graphical For the first time, Fe-Cu bimetallic metal-organic frameworks (MOFs) synthesized via a one‑pot solvothermal method were used for efficient decomposition of CO 2 into CO with excellent stability under nonthermal plasma (NTP). This integrated approach offers fundamental insights and technical support for the development of robust catalysts under plasma conditions.
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DOI
高影响因子
TALANTA
·
2026
·
IF 6.7
Qianglin Hao,Wenhui Yu,Lili Wang,Duo Sun,Shengping Ruan,YiZhou Yang
In the realm of low-power gas sensing, bimetallic sulfides have garnered a lot of interest as prospective sensitive materials. However, their poor tolerance to dampness and delayed reaction kinetics makes them impractical. In order to modify the electronic structure of CdIn 2 S 4 and enhance its gas sensing capabilities, sulfur vacancies were added using atomic Cu doping. The test findings showed that Cu–CdIn 2 S 4 had a response value of 21 to 100 ppm triethylamine gas at a working temperature of 100 °C, which was five times greater than that of CdIn 2 S 4 . The minimal detection limit was 100 ppb. It also responds quickly and recovers quickly (2 s/33 s). Additionally, the sensor has good humidity resistance and selectivity. Cu doping into CdIn 2 S 4 increases the specific surface area and sulfur vacancy concentration, which speeds up the sensitive materials interaction kinetics with the target gas and improves gas sensing capability. The findings show that the defect design work has a lot of potential for use in low-power triethylamine detection, as it is an inexpensive and highly responsive gas-sensitive material.
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DOI
PubMed
高影响因子
Journal of the American Chemical Society
·
2026
·
IF 16.6
Yan Wu,Huaqing Zhang,Dechen Dong,Peng Liang,Yuanzhuo Li,Jiajie Zheng,Xichen Zhou,Jingwen Zhou,Yilin Sun,Zhikang Deng,Shuting Fu,Mingyue Wang,Xiantao Hu,Zuochao Wang,Zijian Jiang,Haoran Liu,Hongjie Dai
Abstract Aqueous batteries with high safety are ideal large-scale energy storage systems, but still face challenges in cycle life, self-discharge, cost, and environment-related issues. Here, we report a rechargeable aqueous zinc–copper battery with high performance, environmental friendliness, and sustainability. We employed widely available metal foils as electrodes and developed a novel zinc–bromide and cuprous–bromide complex anion-containing anolyte and catholyte, respectively, separated by a cation exchange membrane (CEM), utilizing strong coordination between soft bromide ions and zinc/cuprous ions. The battery exhibited a high areal capacity of 4 mAh/cm2 with stable cycling over 2700 h (>900 cycles), energy efficiency up to ∼90%, excellent 99.6% capacity retention against self-discharge over 3 days, and facile scalability to Ah-level Zn/Cu batteries. Importantly, all elements were recycled at the end of the battery cycle life by simple, cost-effective processes with recovery efficiencies of ∼97% for Zn and ∼100% for Cu. This drastically lowered the battery cost and made the anionic Zn–Cu (AZC) battery promising for energy storage at a low cost with high performance and long-term sustainability.
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DOI
高影响因子
ACS Biomaterials Science & Engineering
·
2025
·
IF 5.5
Hui Yuan,Jiangshan Hu,Hao Sun,Peiyuan Wang,Can-zhong Lu,Xiaofeng Wu,Xiaohua Xie,Jiayu Chen,Jie Han,Ting Hu,Jinsheng Liao,Yuhang Li
As a persistent inflammatory dermatological disorder, psoriasis impacts a global population of millions, with existing therapies frequently limited by side effects, high toxicity, and low effectiveness. Herein, we present the design and synthesis of a copper–samarium (Cu–Sm)-based bimetallic nanozyme (CS NPs) with strong antioxidant and anti-inflammatory characteristics for psoriasis therapy. CS NPs imitate natural antioxidant enzymes and efficiently neutralize H2O2, •OH, and O2•–. Characterization investigations have confirmed the nanoparticles’ stability, appropriate Sm doping ratio, and catalytic effectiveness. In vitro, CS NPs decrease ROS levels, restrict keratinocyte proliferation, and regulate inflammatory cytokine release through NF-κB pathway inhibition in HaCaT cells activated with IL-17. In vivo, CS NPs ameliorate IMQ-triggered psoriasiform lesions in mouse models through suppression of epidermal acanthosis, immune cell infiltration, and inflammatory marker expression. These results demonstrate the therapeutic potential of Cu–Sm nanozymes to provide biocompatible and effective psoriasis treatment, offering a viable substitute for conventional therapies.
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产品关联
DOI
PubMed
高影响因子
MATERIALS SCIENCE FORUM
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2023
·
IF 0
Ping Wang,Shu Guang Dong,Zhong Chao Zhao,Yu Fu
In this work, the Cu-alginate/graphene aerogels were prepared by using alginate, graphene and copper chloride as precursors by a freeze-drying process. Finally, N-doped carbon aerogels supported by Cu nanoparticles (NPs) (Cu/N-CAs) were obtained through annealing in the NH3 atmosphere. The morphology, microstructures, specific surface area, and pore size distribution were studied by SEM, XRD, and BET analysis. The results showed that a significant amount of Cu NPs were uniformly disseminated on the aerogels’ surface, and the catalysts’ specific surface area reached 141 m2/g. Electrochemical tests revealed good catalytic capabilities for the oxygen reduction reaction (ORR) of the as-obtained Cu/N-CAs. Compared to the commercial 20%Pt/C, the Cu/N-CAs exhibited comparable catalytic performance, superior catalytic stability and methanol resistance. The transfer of 3.94 electrons indicated that the Cu/N-CAs were undergoing a four-electron (4e-) ORR process.
研究领域:
材料科学
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电化学
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DOI
CHEMICAL ENGINEERING SCIENCE
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2025
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IF 4.3
Siwei Wang,Jin Du,Zhanquan Zhang,Yan Wang,Zhijie Yuan,Yuhan Wang,Tianpei Yi,Fusheng Pan,Zhongyi Jiang
Separating aromatic and aliphatic hydrocarbons can produce high-quality cracking feedstocks and recover value-added aromatic products. Covalent organic framework (COF) may find promising application owing to its exceptional structures and functionalities. In this study, Cu(I)-COF was designed and integrated into Pebax matrix to fabricate facilitated transport membranes. The immobilization of Cu(I) ions onto the COF framework effectively mitigates leaching. Additionally, the COF building blocks provides a stable electron cloud environment for Cu(I), ensuring long-term stability for over 6 months. The vertical channels in the COF afford rapid mass transfer, and the uniformly distributed Cu(I) enhances toluene affinity, thereby intensifying the transfer of toluene. For a 50 wt% toluene/n-heptane mixture, the Cu 3 L 3 -Pa-Pebax-2 membrane demonstrated a permeation flux of 1100 g·m −2 ·h −1 and a separation factor of 5.44. This study provides a new example for the application of multifunctional organic framework materials to fabricate facilitated transport membranes.
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产品关联
DOI
高影响因子
Nature Communications
·
2021
·Vol. 12
·期 1
·1-10
·
IF 14.919
Yu Jiafeng,Sun Xingtao,Tong Xin,Zhang Jixin,Li Jie,Li Shiyan,Liu Yuefeng,Tsubaki Noritatsu,Abe Takayuki,Sun Jian
The rational design of high-temperature endurable Cu-based catalysts is a long-sought goal since they are suffering from significant sintering. Establishing a barrier on the metal surface by the classical strong metal-support interaction (SMSI) is supposed to be an efficient way for immobilizing nanoparticles. However, Cu particles were regarded as impossible to form classical SMSI before irreversible sintering. Herein, we fabricate the SMSI between sputtering reconstructed Cu and flame-made LaTiO 2 support at a mild reduction temperature, exhibiting an ultra-stable performance for more than 500 h at 600 °C. The sintering of Cu nanoparticles is effectively suppressed even at as high as 800 °C. The critical factors to success are reconstructing the electronic structure of Cu atoms in parallel with enhancing the support reducibility, which makes them adjustable by sputtering power or decorated supports. This strategy will extremely broaden the applications of Cu-based catalysts at more severe conditions and shed light on establishing SMSI on other metals.
研究领域:
催化化学
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材料科学
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DOI
高影响因子
JOURNAL OF PHYSICAL CHEMISTRY B
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2014
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IF 3.377
Wei Li,Xiongfei Chen,Yan Fu,Jinli Zhang,Wei Li
The specific interactions of Cu2+ with self-complementary DNA sequences involving d[G4C4(GC)2G4C4], d[(GC)10], and d[(AT)10], as well as the chiral recognition mechanism of ofloxacin enantiomers via the CuII-modulated DNAs, were investigated using characterizations of circular dichroism, gel electrophoresis, FT-IR spectroscopy, UV melting measurement, electron paramagnetic resonance, and HPLC. The CuII-coordinated GC-rich DNAs exhibit amplified enantioselectivity toward the S-enantiomer of ofloxacin. Especially in the case of d[G4C4(GC)2G4C4], ofloxacin enantiomers intercalate into the two adjacent guanine bases through the minor groove mediated by Cu2+, which leads to a more favorable binding between S-ofloxacin and DNA. The highest ee value of ofloxacin enantiomers in the permeate after being adsorbed by the CuII–DNA complex is obtained as 49.2% in the R-enantiomer at the [Cu2+]/[base] molar ratio of 0.25, while at the [Cu2+]/[base] molar ratio of 0.05 the highest ee value of ofloxacin enantiomers in the retentate reaches 26.3% in the S-enantiomer. This work illustrates a novel promising route to construct DNA-based chiral selectors toward certain drug enantiomers through the programmable enantioselective recognition on the basis of DNA chirality and the specific binding of transition metal ions.
研究领域:
化学
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生物化学
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药学
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分析化学
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DOI
PubMed
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
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2016
·Vol. 45
·期 12
·6095-6101
·
IF 1.491
Wang Yan,Han Jing,Ma Limin,Zuo Yong,Guo Fu
The composite approach, by incorporating small amounts of reinforcement particles in the solder matrix, has proven to be one of the effective ways to improve the reliability of solder joints. The effects of Cu addition on electromigration were investigated in this study by incorporating 2% volume fraction Cu particles into Sn-3.5Ag eutectic solder paste by the in situ process. The one-dimensional solder joints, designed to prevent the current crowding effect, were stressed under a constant current density of 10 4 A/cm 2 at room temperature, and the temperature of the sample could reach 105 ± 5°C due to the Joule heating effect. Doping 2 vol.% Cu was found to retard the electromigration phenomenon effectively. After electric current stressing for 528 h, the growth rate of an interfacial intermetallic compound (IMC) layer at the anode decreased 73% in contrast to that of Sn-3.5Ag solder joints, and the IMC layer at the cathode was almost unchanged. The polarization effect of Cu reinforced composite solder joints was also apparently mitigated. In addition, the surface damage of the composite solder joints was relieved by incorporating 2 vol.% Cu particles. Compared to Sn-3.5Ag solder joints, which had protruded Cu 6 Sn 5 and wrinkles of Sn-solder matrix on the surface, the solder joints with Cu addition had a more even surface.
研究领域:
材料科学
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电子封装
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可靠性工程
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2016
·
IF 3.014
Huali Hao,Shulong Ye,Kaiping Yu,Peng Chen,Ruinan Gu,Peng Yu
The influence of alloying elements on the sintering behaviors of Cu is investigated by using Cu green samples doped with 0.5 wt% of Cr, Ti, Al, Mo, Nb and W. The sintering of Cu is greatly promoted by adding Cr, Ti and Al, but impeded by adding Mo, Nb and W. Among all alloying elements, Cr shows the most significant promoting effect, with the relative density of the Cu-0.5 wt% Cr sample being increased to 95% after sintering, about 5% higher than the pure Cu sample. Both the thermodynamic analysis and microstructure observation of the sintered samples suggest that the sintering enhancement can be attributed to the reduction of oxide layer on the Cu powder. The sintering-promoting elements are more affinitive to oxygen. Therefore, they are more likely to react with the oxide layer on the powder surface and facilitate the sintering.
研究领域:
材料科学
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冶金学
·
粉末冶金
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DOI
高影响因子
ACS Applied Materials & Interfaces
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2024
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IF 8.3
Wenjie Shu,Yuxia Tang,Bingwen Su,Aijun Hong,Lin Lin,Xiaohui Zhou,Zhibo Yan,Jun-Ming Liu
Recently, the p-type semiconductor AgSbTe2 has received a great deal of attention due to its promising thermoelectric performance in intermediate temperatures (300–700 K). However, its performance is limited by the suboptimal carrier concentration and the presence of Ag2Te impurities. Herein, we synthesized AgSb1–xCuxTe2 (x = 0, 0.02, 0.04, and 0.06) and investigated the effect of Cu doping on the thermoelectric properties of AgSbTe2. Our results indicate that Cu doping suppresses the Ag2Te impurities, raises the carrier concentration, and results in an improved power factor (PF). The calculation reveals that Cu doping downshifts the Fermi energy level, reduces the energy band gap and the difference among several valence band maximums, and thereby explains the improvement of PF. In addition, Cu doping reduces the thermal conductivity, possibly attributed to the inhibition of Ag2Te impurities and the phonon softening of the AgSb1–xCuxTe2. Overall, Cu doping improves the ZT of AgSb1–xCuxTe2. Among all samples, AgSb0.96Cu0.04Te2 has a maximum ZT of ∼1.45 at 498 K and an average ZT of ∼1.11 from 298 to 573 K.
研究领域:
材料科学
·
热电学
·
半导体物理
·
能量转换
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DOI
高影响因子
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