JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Zhenjiang Li,Chenghai Gao,Huimin Zhao,Alan Meng,Shiqi Ding,Xuehua Wang,Shaoxiang Li
Exploration of new non-precious metal catalysts for highly efficient oxygen reduction reaction (ORR) is essential for sustainable energy utilization technologies. Herein, porous biomass-derived carbon modified by Cu, N co-doping and Cu nanoparticles was synthesized by hydrothermal followed pyrolysis strategy, and used for electrocatalytic ORR. The optimized Cu/Cu-N-C catalyst exhibits large surface area (235.91 cm 3 g −1 ) and hierarchical pore structure . Benefiting from the above factors, the Cu/Cu-N-C catalyst performs a high onset potential (E onset , 0.947 V vs. reversible hydrogen potential (RHE)) and a half-wave potential (E 1/2 , 0.875 V vs. RHE) in 0.1 M KOH solution. The calculated electron transfer number of 3.92 suggests the near-four-electron ORR process. Besides, the Cu/Cu-N-C catalyst also performs extraordinary stability and higher methanol tolerance than Pt/C. In addition, the assembled Zn-air battery based on the optimized Cu/Cu-N-C catalyst exhibits a higher power density of 150.7 mW cm −2 than the that of Pt/C-based battery. This work put forward a newfangled method to fabricate efficient ORR catalyst by loading active component on biomass-derived carbon, which follows the sustainable development concept, and provides a profitable reference for designing nonprecious metal carbon-based ORR electrocatalyst .
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ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Ze Chai,Chuanhai Jiang
The electrochemical/chemical growth of porous (Ni,Co,Cu)(OH) 2 was reported based on the corrosion behaviors of Ni-Co-Cu films in neutral salt spray . The films prepared by using electrodeposition were ternary solid solution alloys with a simple phase structure, strong texture, nanoscale grains, large microstrain and a large number of crystal defects . The unique microstructures coupled with extensive ion diffusion during the subsequent corrosion process facilitated the formation of ternary hydroxides with uniform and porous nanostructures . The ternary hydroxides composed of Ni-/Co-dominant hydrotalcite-like and Cu-dominant orthorhombic (Ni,Co,Cu)(OH) 2 could be efficiently prepared by motivating the transformation from oxide to hydroxide. The binder-free (Ni,Co,Cu)(OH) 2 electrode exhibited a high specific capacitance of 1738 F g −1 at a current density of 20 A g −1 and decent cycling stability. The electrochemical/chemical growth mode, uniform porous nanostructures and nature of the ternary hydroxides could account for the superior electrochemical performances. This work proposed a simple and green approach to prepare multicomponent hydroxides as novel electrode materials for rechargeable batteries and hybrid supercapacitors .
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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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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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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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PubMed
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2025
·
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
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
Journal of Energy Chemistry
·
2025
·
IF 14.9
Zhengwen Li,Jiajun Zhang,Wei Pan,Shuairen Qian,Yuhan Wang,Dong Su,Liguo Wang,Binhang Yan
Single-atom catalysts for alkyne semi-hydrogenation have been extensively investigated due to their high metal utilization and improved olefin selectivity. However, their reactivity is hindered by the sluggish activation of reactants on isolated sites. Herein, a non-precise metal catalyst consisting of Ni-Cu hetero-diatomic pairs was prepared using a sequential deposition method. The diatomic sites catalyst exhibited an unprecedented activity among non-precious catalysts with over 98% conversion and 77 mol C2H2 mol metal −1 h −1 at 180 °C, whereas the single-atom catalysts of Cu/C and Ni/C were almost inert under the same conditions. Experimental and theoretical results revealed the crucial diatomic synergy between the Ni-Cu pairs, wherein acetylene was adsorbed on Ni sites and hydrogen was adsorbed on Cu sites, and the diatomic site enabled spontaneous desorption of ethylene. The superior activity of the diatomic catalyst was observed, resulting from the enhanced dominance of d -electrons of Ni near the Fermi level. The research demonstrates an approach to designing non-precise metal catalysts with extraordinary catalytic performance for alkyne hydrogenation.
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高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2021
·
IF 3.498
Sai-Li Zheng,Yonghe He,Xiao-Kang Qiu,Yuan-Hui Zhong,Lai-Hon Chung,Wei-Ming Liao,Jun He
A novel metal-organic framework [CuCN(TMBP)·H 2 O] n ( TCuCN ) has been synthesized by the reaction of 3,3′,5,5′-tetramethyl-4,4′-bipyrazole (TMBP) and CuCN. Its structure was determined by single-crystal X-ray diffraction (SCXRD) analysis and further characterized by power X-ray diffraction (PXRD) analysis, FT-IR spectroscopy and thermogravimetric (TG) analysis. Previously reported structurally analogous TCuCl , TCuBr , TCuI have also been synthesized for Br 2 adsorption comparison. All of these four MOFs exhibited reversible uptake of Br 2 vapor judging by the unchanged PXRD patterns . Among four MOFs, Br 2 -loaded TCuI showed the most uptake amount of Br 2 (15.7 wt%), providing the formula to be TCuI ·0.33Br 2 . The different uptake amount of Br 2 for TCuX (X = CN, Cl, Br, I) should be mainly ascribed to the intermolecular interaction between CuX and Br 2 .
研究领域:
无机化学
·
材料化学
·
配位化学
·
多孔材料
·
气体吸附
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JOURNAL OF ALLOYS AND COMPOUNDS
·
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
·
冶金学
·
粉末冶金
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高影响因子
ACS Applied Materials & Interfaces
·
2024
·
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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RUSSIAN JOURNAL OF GENERAL CHEMISTRY
·
2021
·Vol. 91
·期 4
·726-731
·
IF 0.868
Xu Y.,Hu Y.,Bao Q.,Zhang J.,Liu B.,Zhang Z.,Zhang Q.,Zhang H.
Copper phyllosilicate has been synthesized from a solution of sodium silicate and copper nitrate by co-precipitation under acidic conditions followed by reduction under H 2 flow for using it as the Cu/SiO 2 catalyst. The catalyst has been characterized by XRD, XPS, FTIR and Raman spectra, EDS, BET, and TEM. It is confirmed that only copper phyllosilicate and SiO 2 exist in the catalyst precursor, and there has been no CuO. Physical and chemical properties of Cu/SiO 2 catalyst have been evaluated. The Cu/SiO 2 catalyst has not only a large specific surface area and abundant mesopores but also the advantages of high dispersion of copper nanoparticles and the combination of Cu 0 and Cu + . The catalyst demonstrates high activity and selectivity in the reaction of 2-butanol dehydrogenation to methyl ethyl ketone.
研究领域:
催化化学
·
材料科学
·
物理化学
·
纳米材料
·
有机合成
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高影响因子
危险品化学品经营许可证（带存储）