FUEL
·
2025
·
IF 7.5
Jie Liu,Lin Yang,Wenju Jiang,Zhongde Dai,Lu Yao,Junfeng Zheng,Xingjian Wang
In this study, the Cu/C@Zeolite catalysts with carbon-zeolite bifunctional support was developed by using the zeolite-induced one-pot homogeneous synthesis of CuBTC composite (CuBTC@Zeolite). Three different zeolites (ZSM-5, 13X, NaY) and the activation conditions were discussed. Originating from the defective structure of CuBTC in the composite and its interactivity with the zeolite, compared to Cu/C, the Cu/C@zeolite catalysts had the hierarchical pore system, a higher content of oxygen vacancies, stronger redox properties, and more active Cu sites with smaller particle sizes and more Cu + /Cu 2+ coexisting valence states, in synergy with acid sites, all of these contributing to the improved catalytic activity for VOCs oxidation removal. The activity of toluene catalytic oxidation indicated by T 90 was in the order of Cu/C@NaY (268.5 °C) > Cu/C@ZSM-5 (280.0 °C) > Cu/C@13X (287.0 °C) > Cu/C (320.0 °C). They also performed a better activity for acetone and ethyl acetate oxidation, obtaining the lowest T 90 at 217.0 and 231.5 °C respectively when the Cu/C@NaY used. Moreover, the Cu/C@NaY and Cu/C@ZSM-5 performed good water resistance and stability, suggesting the potential in practical application scenarios. These findings underscored the potential of Cu/C@Zeolite catalysts for addressing complex VOCs in simultaneous catalytic oxidation.
研究领域:
环境科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Wen-Jing Yi,Jingyi Yang,Yongzhen Gao,Xiaotian Zhou,Wenlei Zhang,Meng Zhang,Zhongyi Liu
Copper catalysts have garnered considerable interest as promising active metals for upgrading biomass resources, especially in selective furfural (FF) hydrogenation reaction. However, effectively enhancing the interactions between active metals and supports while providing abundant surface reaction sites remains enormous challenge to improve catalytic performance. Herein, we present a unique hydrotalcite-derived Cu-based catalyst featuring well-dispersed Cu 0 /Cu + nanodots towards selectively hydrogenated FF to furfuryl alcohol (FA). Impressively, the optimized CuMg 3 Al-R catalyst exhibits the exceptional hydrogenation performance, achieving almost 100 % FF conversion and 99.3 % FA selectivity. Comprehensive studies reveal that the small sized Cu species with well dispersion, the synergistic effect of Cu 0 and Cu + , combined with the selective adsorption and activation of C O groups jointly contribute to the enhanced catalytic performance. This work offers a promising strategy to rationally design well-dispersed Cu species for the selective hydrogenation of C O groups, which holds great significance for biomass-related hydrogenation reaction.
研究领域:
催化化学
·
生物质能
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2018
·
IF 6.653
Ming Lei,Shun Guo,Zhiying Wang,Lihua Zhu,Heqing Tang
Fast and deep debromination of polybrominated diphenyl ethers (PBDEs) under mild conditions is a challenge in the field of pollution control. A strategy was developed to achieve it by exploiting Cu/TiO2 composites as a noble-metal-free catalyst. Toward the debromination of 2,2′,4,4′-tetrabromodiphenyl ether (BDE47) as a typical PBDE, the use of Cu/TiO2 as a catalyst and hydrazine hydrate (N2H4·H2O) as a reducing agent yielded a degradation removal of 100% and a debromination efficiency of 87.7% in 3 s. A complete debromination of BDE47 at 1500 mg L–1 was possible by successively adding N2H4·H2O. A debromination pathway involving active H atom species was proposed for the catalytic transfer hydrogenation (CTH) of PBDEs according to the identified degradation intermediates. A mechanism was further clarified by density functional theory calculations: electrons are delivered from N2H4·H2O to the metallic Cu atom via a coordination of N in N2H4·H2O with Cu atoms. The electron-trapped Cu atom interacts with adsorbed BDE47 to form a transition complex, and then the debromination of this complex occurs on the surface of Cu nanoparticles due to the hydrogen donation of N2H4·H2O through the CTH process. The new method provides a highly efficient method to remove brominated pollutants.
研究领域:
环境科学
·
污染控制化学
·
材料科学
✓ 已验证
DOI
高影响因子
CATALYSIS LETTERS
·
2025
·Vol. 155
·期 9
·1-12
·
IF 2.4
Zhong Yuhang,Xu Hui,Li Zhiguo,Zhang Yuqi,Hou Jianyuan,Yuan Yuan,Liu Xingang,Zhang Renxi
This study demonstrates an innovative approach for green and efficient hydrogen production from seawater, utilizing Cu–Fe/Al 2 O 3 catalysts coupled with a dielectric barrier discharge (DBD) system. The catalytic performance was systematically evaluated under varying voltages and Cu/Fe ratios in a DBD reactor to optimize hydrogen production efficiency. Subsequent investigations focused on humidity and gas flow rate effects using the optimal catalyst (Cu/Fe/Al 2 O 3 = 2:1:9). Multimodal characterization (XRD, XPS, FTIR, OES) combined with DFT calculations revealed the mechanistic role of Cu–Fe/Al 2 O 3 in plasma-driven hydrogen generation. The synergistic interaction between Fe and Cu enhanced hydroxyl/hydrogen radical generation through improved adsorption, thereby boosting hydrogen evolution efficiency and yield. The optimized system achieved a maximum hydrogen yield of 7.4 g/kWh at 3 kV operating voltage, 3 L/min argon flow, and 100% relative humidity, establishing an energy-efficient pathway for sustainable hydrogen production from seawater. Graphical
研究领域:
能源科学
·
等离子体化学
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催化
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环境工程
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
DALTON TRANSACTIONS
·
2021
·Vol. 50
·期 21
·7256-7264
·
IF 4.39
Lei Ye,Yeqing Zhang,Limin Wang,LinXiu Zhao,Yaqiong Gong
Due to the slow kinetics of oxygen evolution at the anode, the efficiency of electrocatalytic water decomposition is critically reduced, and its large-scale application is severely restricted. Therefore, it is urgent to develop electrocatalysts with excellent performance and stability to accelerate the oxygen evolution reaction (OER) reaction kinetics. Herein, a self-supporting binder-free electrocatalyst was successfully prepared using in situ grown Cu(OH)2 nanowires on CF as the carrier to grow ZIF-67 via a room temperature immersion method. The combination of Cu(OH)2 nanowires and the unique structure of ZIF-67 forms a three-dimensional nanostructured catalyst, in which the unique structure and the existence of synergy may contribute to a larger electrochemical active surface area, expose more electrochemically active sites, adjust the electronic structure, and accelerate the rate of electron transfer, thus greatly improving the electrocatalytic activity and durability for OER. The as-prepared Cu(OH)2@ZIF-67/CF exhibited excellent OER performance under alkaline conditions and required overpotentials of 205 mV and 276 mV to drive current densities of 10 mA cm−2 and 100 mA cm−2, respectively, with a small Tafel slope of 70.5 mV dec−1 for OER. The stability test of Cu(OH)2@ZIF-67/CF at the current density of 10 mA cm−2 displayed excellent stability for 22 h. This study provides a feasible strategy for the rapid preparation of low-cost and efficient electrocatalysts in alkaline media.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS RESEARCH
·
2019
·Vol. 34
·期 16
·2757-2764
·
IF 1.982
Yi-Dong Zhang,Lei Zhao
Fabrication and characterization of solution-processed, all-inorganic quantum dots (QDs) light-emitting diodes (QLEDs) incorporating colloidal CdSe/ZnS QDs are presented. Using a simple solvothermal process, Cu-doped NiO nanocrystals were fabricated and applied as a hole transport layer in all inorganic QLEDs. Cu-doped NiO nanocrystals are ascribed to bunsenite cubic structure. The transmittance of the film is more than 81%. The hole-only devices of Au/QDs/Cu–NiO/ITO structures showed that 5% mol Cu doped NiO film obtained the largest hole current. The resulting devices show pure QD electroluminescent emissions with a maximum electroluminescence brightness of 2258 cd/m2 after doping 5% mol Cu in NiO, which is almost 4-fold compared with that of intrinsic NiO due to the enhanced carrier concentration and conductivity. The current efficiency and EQE of the assembled all-inorganic QLED exhibited the maximum values of 1.18 cd/A and 1.223%, respectively.
研究领域:
材料科学
·
光电技术
✓ 已验证
DOI
高影响因子
MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 6
·1-10
·
IF 5.3
Ren Dongxia,Wang Lin,Wei Hua,Mu Shijie,Yang Longfei
Bacterial infection is one of the leading causes of human death globally and is considered to be an urgent public health challenge. It is important to accurately and rapidly detect and kill pathogenic microorganisms. Therefore, a multifunctional platform for sensitive detection and efficient elimination of pathogenic bacteria should be developed to reduce the threat of bacteria. In this study, an integrated strategy based on Fe 3 O 4 -quaternary ammonium chitosan-polyetherimide-Cu-aptamer (Fe 3 O 4 -QCS-PEI-Cu-aptamer) and ladder-branch hybridization chain reaction (HCR) was proposed for the detection and inactivation of Staphylococcus aureus ( S. aureus ). The aptamer-complementary chain (aptamer-CP) conjugated to the surface of Fe 3 O 4 -QCS-PEI-Cu induces CP release in the presence of S. aureus , further initiating the ladder-branch HCR reaction and achieving signal amplification. Under optimal conditions, the developed sensor demonstrated a limit of detection (LOD) of 3 CFU/mL for S. aureus and exhibited high selectivity against several other pathogenic bacteria. Moreover, the Fe 3 O 4 -QCS-PEI-Cu-aptasensor showed potent antibacterial properties under near infrared (NIR) irradiation, achieving an antimicrobial efficiency of 99.946%. This strategy synergistically combined the high-sensitivity molecular detection with the antibacterial activity of novel nanomaterials activated by near infrared light, providing a new insight into the prevention of bacterial infections. Graphical
研究领域:
生物医学工程
·
微生物学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Hongrong Mei,Liangbin Zhang,Zhenggang Rao,Longlong Shu,Weiping Gong,Chunchun Li
Microwave dielectric ceramics with excellent properties and low sintering temperatures are pursued saving energy and cofiring with metal electrodes (especially Ag, Cu). Herein, a low-firing Na 2 CaTi 2 Ge 3 O 12 garnet was fabricated via a simple solid-state method. XRD , SEM, Raman spectrum, and dielectric characterization were used to reveal the influence of sintering temperature on crystal structure and dielectric properties . A single-phase Na 2 CaTi 2 Ge 3 O 12 ceramic densified at 960 °C has the optimized dielectric properties with ε r = 15.3 ± 0.2, Q × f = 55,900 ± 2000 GHz, and τ f = −15.7 ± 0.5 ppm/°C. The infrared (IR) spectrum was applied to estimate the intrinsic contribution of lattice vibration to microwave dielectric properties. The anti-reductive feature of Na 2 CaTi 2 Ge 3 O 12 ceramic was evaluated via sintering at a reducing atmosphere while cofiring with Cu electrodes. The good chemical compatibility with Ag and Cu electrodes manifests the potential prospect of Na 2 CaTi 2 Ge 3 O 12 ceramic in the low-temperature co-fired ceramic (LTCC) application.
研究领域:
材料科学
·
电子材料
·
陶瓷材料
✓ 已验证
DOI
高影响因子
ACS Applied Polymer Materials
·
2021
·
IF 4.089
Tianyou Chen,Zihao Wang,Wei Xiao,Changfeng Yi,Zushun Xu
Transformation of multifunctional homogeneous catalysts to the corresponding heterogeneous catalytic systems makes catalytic reactions interesting from both economic and environmental points of view. Here, we have devised a controllable and efficient strategy for the preparation of supported multifunctional catalysts by taking the Cu/2,2,6,6-tetramethyl-1-piperidine-N-oxyl (TEMPO) catalytic system as an example. Polystyrene-supported Cu/TEMPO catalysts were, for the first time, prepared via nanoprecipitation of polymers in water and efficient for aerobic oxidation of benzyl alcohol (BnOH). Cooperative behaviors could be regulated by precise control of local concentrations of functional groups. We have demonstrated that the incorporation of functional groups into polystyrene supports can make better use of catalytic components, resulting from confinement-enhanced cooperation. This strategy provides access to build more efficient multifunctional heterogeneous catalysts through establishing structure–activity relationships.
研究领域:
化学工程
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材料科学
·
催化化学
✓ 已验证
DOI
高影响因子
CATALYSIS LETTERS
·
2019
·Vol. 150
·期 3
·815-825
·
IF 2.372
Huang Yan-Feng,Zhang Lu,Ma Li,Li Ying,Zhong Chongli
Abstract Fe 3 O 4 @Cu/C and Fe 3 O 4 @CuO composites were achieved using nanoparticle-encapsulated MOFs Fe 3 O 4 @HKUST-1 as both a precursor and a self-sacrificing template. Fe 3 O 4 @HKUST-1 was thermally converted into magnetic Fe 3 O 4 @Cu/C and Fe 3 O 4 @CuO composites in different atmosphere (N 2 and air). The resulting composites not only kept superparamagnetic characteristics, but also exhibited improved peroxidase-like catalytic activity and high stability when compared to the precursor Fe 3 O 4 @HKUST-1. The morphology, crystal structure, magnetic and porous properties of Fe 3 O 4 @Cu/C and Fe 3 O 4 @CuO composites were characterized, and the kinetics parameters and the influence factors on the peroxidase-mimicking activity such as temperature, pH and H 2 O 2 concentration were evaluated. On account of the excellent peroxidase-like activity, the as-prepared Fe 3 O 4 @Cu/C and Fe 3 O 4 @CuO composites were successfully used for the catalytic removal of methylene blue (MB) dye with H 2 O 2 oxidant. This work provides an effective way to fabricate highly reactive MOFs-derived biomimetic catalysts, which have potential applications in bioassays and pollutant degradation. Graphic Abstract Fe 3 O 4 @Cu/C and Fe 3 O 4 @CuO composites were achieved using Fe 3 O 4 nanoparticle-encapsulated HKUST-1 as self-sacrificial templates and demonstrated excellent peroxidase-like activity.
研究领域:
材料科学
·
催化化学
·
环境科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Yi Yang,Minyi Liu,Xintong You,Ying Li,Haowen Lin,J. Paul Chen
Treatment of organic wastewater is of great importance and can be carried out by catalysis technologies such as catalytic wet peroxide oxidation (CWPO). A novel bimetallic Fe-Cu-CNT catalyst was first developed by a facile hydrothermal method; Fe species (Fe (Ⅱ) and Fe (Ⅲ)) and Cu species (Cu (Ⅰ) and Cu (Ⅱ)) were used to fabricate the catalyst with the CNTs, which was stable during testing. Methylene blue (MB) was chosen as model compound for the study; the optimization for treatment by the Box-Behnken design indicated that a combination of low pH, high MB concentration and intermediate temperature led to better treatment performance. The CWPO reaction obeyed the 2 nd -order kinetic equation and the catalyst activity increased with an increase in the Cu content. The reaction induction period was shortened with decreasing Fe:Cu ratio. The cycling reaction between Fe 3+ /Fe 2+ and Cu 2+ /Cu + pairs generated a large number of oxidative radicals and improved the pollutant degradation efficiency. Finally, the reaction rate equation of CWPO over Fe-Cu-CNT was derived, and it was experimentally illustrated that hydroxyl radicals played a crucial role in the treatment. This study demonstrates that the optimized Fe-Cu-CNT has great potentials for treatment of organic wastewater with higher efficiency and lower cost.
研究领域:
环境科学
·
催化化学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Nan Lu,Zhenyong Ying,Fozia Sultana,Xiaofan Zhang,Tongtong Li,Renhong Li,Benxia Li,Xiaoqing Yan
Harnessing the full solar spectrum through photothermal co-catalysis represents a transformative approach for optimizing energyconversion and advancing sustainable development. Herein, a hollow spherical Cu/CuO-Fe3O4 composite was developed as a photothermal cocatalyst for efficient hydrogen evolution. The unique hollow spherical architecture significantly enhances solar light harvesting, reduces thermal dissipation, and provides an ideal confined environment for catalytic reactions. Metallic Cu serving as the primary contributor to the LSPR effect, enabling effective light harvesting and photothermal conversion. Meanwhile, CuO, as a semiconducting oxide, contributes to charge separation and transfer, working synergistically with Fe3O4. A robust heterojunction interface between Cu, CuO, and Fe3O4 ensures efficient separation and migration of photogenerated charge carriers. This synergy, combining the LSPR effect of Cu, the photothermal properties of Fe3O4, and the catalytic functionality of CuO, results in significantly enhanced hydrogen evolution activity. Operated under an oxygen-mediated mechanism, the catalyst achieved an impressive hydrogen evolution rate of 13,371.36 μmol·gcatalyst-1·h-1 at a partial oxygen pressure of 1.0 atm. These findings underscore the potential of hollow spherical Cu/CuO-Fe3O4 composites as advanced photothermal co-catalysis as a viable pathway for next-generation clean energy applications.
研究领域:
材料科学
·
能源科学
✓ 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）