CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Wenbin Huang,Kaining Wang,Han Yang,Tianyu Bai,Yasong Zhou,Qiang Wei,Minghan Han
CO 2 hydrogenation to methanol emerges as a promising strategy, offering a dual advantage of carbon dioxide fixation and the production of a valuable liquid fuel and chemical feedstocks. However, its industrial application is limited by the high stability of the CO 2 molecule, resulting in low CO 2 conversion and methanol selectivity. In this work, a series of Ce-doped Cu-ZrO 2 catalysts were synthesized by an oxalic acid gel co-precipitation method, and the effect of Ce/Zr molar ratios on catalyst structure and catalytic performance were investigated. Comprehensive characterization techniques, including XRD, N 2 physical adsorption–desorption, HRTEM, H 2 -TPR, XPS, CO 2 /H 2 -TPD and DFT calculation were employed to analyze the influence of Ce doping on oxygen vacancy concentration, surface basicity distribution, electron transfer, and catalytic performance. The results demonstrate that the CC 0.4 Z catalyst (n(Ce)/n(Zr) = 0.4) forms a Ce 0.4 ZrO solid solution structure, significantly enhancing CuO dispersion and generating abundant Cu δ+ -Ce 0.4 ZrO interfacial sites and oxygen vacancies. These features synergistically promote CO 2 /H 2 adsorption and activation while stabilizing Cu + species. Under optimized reaction conditions (260 ℃, 3.0 MPa, 9000 h −1 ), the CC 0.4 Z catalyst exhibits outstanding performance: CO 2 conversion of 14.6 %, methanol selectivity of 74.1 %, and a methanol yield of 10.8 %. Compared to the unmodified catalyst, this represents an increase of 5.8 percentage points in CO 2 conversion and 6.3 percentage points in methanol yield, providing a novel catalyst design strategy for efficient CO 2 conversion.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Liping Du,Limo He,Song Hu,Sheng Su,Yi Wang,Long Jiang,Jun Xu,Kai Xu,Jun Xiang
The low-temperature water-gas shift (WGS) reaction confronts critical challenges of sluggish kinetics, inadequate H 2 yield and CO conversion, necessitating the development of high-activity catalysts to effective clean energy production with reduced energy consumption. In this study, we systematically investigate the relationship between the physicochemical properties of Cu-based catalysts supported on CeO 2 with tailored morphologies (nanorods, nanospheres, and nanocubes) and catalytic performance. Cu-CeO 2 (R) achieves 52.3 % CO conversion and 79.88 mL/gH 2 O H 2 production at 370 °C—nearly twice those of Cu-CeO 2 (P) under identical conditions—with an apparent activation energy of 55.25 kJ·mol −1 . This outstanding performance stems from proper oxygen vacancy concentration (OVC, 2.23 × 10 21 cm −3 ) and ordered Cu + -[O v ] Ce 3+ interfacial sites induced by strong metal-support interaction (SMSI) within Ce 1-x Cu x O 2 solid solutions. In contrast, Cu-CeO 2 (S) and Cu-CeO 2 (C) display relatively lower maximum CO conversions (45.97 % at 410 °C and 43.7 % at 370 °C, respectively), due to excessive defect oxygen (34.41 % and 44.89 %) that strongly adsorbs reaction intermediates, postponing the WGS rate by 15–20 %. In-situ spectroscopy reveals that CeO 2 morphology modulates oxygen vacancy (O v ) distribution and Cu Ce interfacial structures, giving rise to distinct adsorption states and binding strengths of CO/CO 2 on Cu/CuO x nanoclusters with varied valence states and dispersions. Cu-CeO 2 (S) and Cu-CeO 2 (C) exhibit complex carbonation pathways, featuring dynamic evolution of intermediates from monodentate to bidentate to polymeric carbonates, attributed to surface site diversity and cross-interactions of Cu sites. This work elucidates the morphology-activity relationship of Cu-CeO 2 catalysts, providing insights for the rational design of highly active low-temperature WGS catalysts.
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2025
·
IF 4.1
Zikang Hou,Baogang Zhang,Xia Li,Yuanjie Liang
Tailoring a highly active interlayer in Pd electrodes is critical for determining electrode performance and stability. In this study, an active Cu-porphyrin interlayer is electrodeposited onto the sponge nickel (SN) skeleton. The modified sponge nickel is subsequently used to support Pd particles and fabricate an effective Pd/Cu-P/SN composite electrode. Compared with the initial Pd/SN electrode, the increase in dechlorination efficiency is 3.59 times for the Pd/Cu-P/SN electrode. Furthermore, substantial improvements in both mass activity and current efficiency are achieved, with respective increases of approximately 14.2-fold and 4.2-fold relative to the untreated electrode. These significant enhancements are ascribed to the well-designed active Cu-porphyrin interphase. Specifically, the Cu-porphyrin interlayer on the SN skeleton provides an enlarged specific surface area, thus accommodating a greater dispersion of Pd particles. Additionally, the confinement of Pd particles on Cu-porphyrin regions leads to the establishment of Pd Cu interfaces, and this interfacial intimacy expedites the evolution of active hydrogen, leading to a high electrocatalytic removal rate even at an elevated 4-chlorophenol concentration. The Pd/Cu-P/SN composite electrode presented here shows a great application potential for the electrocatalytic treatment of organic chlorophenol wastewater, which also paves a new avenue for enhancing electrode properties through rational introducing of metal-porphyrin interphase.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xin Wang,Qinian Wang,Mu Yuan,Xu Cheng,Bo Zhang,Ke Zhang,Lili Wang,Chao Wu,Xing Zhang
Electrochemical reduction of NO 3 – (ERN) is a promising route for sustainable water treatment and nitrogen recovery. However, its practical implementation is hindered by the low Faradaic efficiency (FE) and NH 4 + yield rate of conventional electrodes under low NO 3 – concentrations (≤50 mg-N L -1 ). These limitations primarily arise from insufficient reactant accessibility and the undesired hydrogen evolution reaction (HER). Here, we developed a copper electrode modified with polyvinylpyrrolidone (PVP) and grain boundary (GB) defects as an ERN catalyst (denoted as PVP-Cu). The PVP-Cu electrode achieved a FE of 81.82 % and an NH 4 + yield rate of 0.44 mg-N h −1 cm −2 , approximately 3-fold higher than its counterparts in a 30 mg-N L -1 NO 3 – solution. Characterization results reveal that both PVP modification and GB defects synergistically enhance the triple microenvironment. Specifically, (i) the hydrophilic PVP layer enhances mass transfer, concentrating NO 3 – near active sites, (ii) GB defects facilitate water dissociation, and (iii) these features produce active hydrogen species while suppressing their recombination into undesired H 2 . This integrated “enrichment-activation-suppression” mechanism significantly improves the ERN performance. Additionally, the PVP-Cu electrode exhibited robust resistance to environmental interferences, a widely pH range, minimal Cu leaching, and excellent operational stability. This work establishes a general microenvironment engineering strategy to enhance ERN performance, advancing technologies suitable for decentralized water purification and nutrient recovery.
✓ 已验证
DOI
高影响因子
OPTICAL MATERIALS
·
2025
·
IF 4.2
Yuxi Liu,Wenjing Zhang,Weimeng Chi,Yuxuan Liu,Ying Chen,Yuning Liang
As a potential Fenton catalyst, Fe-based organic frameworks (Fe-MOFs) severely limit their application in practical heavy pollution due to their slow cycling rate. In this work, a novel photocatalyst (NH 2 -MIL101(Fe, Cu)/WO 3 ) was synthesized using a two-step hydrothermal method. Research on photocatalytic activity revealed that NH 2 -MIL101(Fe, Cu)/WO 3 , when combined with H 2 O 2 , exhibits higher degradation efficiency compared than pure NH 2 -MIL101(Fe, Cu) or WO 3 alone, achieving up to 90 % degradation of levofloxacin (LEV) under visible light irradiation. In addition, the effects of hydrogen peroxide dosage, pH and other factors on degradation performance were studied, and the results demonstrated good stability even after multiple cycles. This excellent photocatalytic performance is attributed to the formation of heterogeneous structures as well as the doping of copper ions. This not only inhibits the electron-hole recombination, but also improves the redox capacity of the catalyst accelerating the regeneration of Fe 3+ . This work offers a way to enhance the photo-Fenton activity of Fe-MOF-based catalysts.
✓ 已验证
产品关联
DOI
高影响因子
Molecular Catalysis
·
2024
·
IF 3.9
Weiyou Zhou,Jiayin Huang,Anwei Wang,Jia Cui,Jie Yao,Tao Hou,Shuliang Ji,Mingyang He,Zhonghua Sun
An efficient heterogeneous catalytic system for the [4 + 2] annulation reactions between tertiary anilines and tetrahydrofuran has been developed based on CuCoFe layered double oxide in the study. Cu + species was believed to play the crucial role in the catalytic transformation, and synergistic effect between Cu and CoFe species was observed in the reaction. Various tertiary anilines could be tolerated by the present catalytic system. A series of control experiments were conducted to determine the reaction intermediates. A distinctive reaction mechanism has been described for the annulation reaction based on these results and kinetic isotopic effects experiments.
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
·
2025
·
IF 5.6
Zhenyu Wang,Jianxiang Li,Sihan Li,Diwei Li,Yunyi Zhao,Ling Xu,Gang Liu,Zhaoqiong Chen,Xiaoming Luo
Wound infection represents a prevalent and pressing clinical challenge, resulting in delayed wound healing and severe complications. In this study, a novel wound dressing was fabricated through a combination of electrospinning and acid etching techniques. First, nanofibers were fabricated by blending electrospun polyacrylonitrile/Polyvinylpyrrolidone (PAN/PVP) polymers with copper-based metal organic frameworks (Cu-MOFs). Subsequently, tannic acid was employed to etch the surface sites of Cu-MOFs on the fibers. The obtained nanofibers exhibited a typical porous structure, superior water absorption and gas permeability, with the average water vapor transmission rate was 2170.6 gm -2 day -1 . Additionally, the release behavior of copper ions can be modulated by altering the mass ratio of PVP to PAN, the amount of Cu-MOFs and the use of tannic acid. In vitro antibacterial assays revealed that the antibacterial efficacy of nanofibers increased with the addition of Cu-MOFs, after 48 hours of treatment, the inhibition rates of the nanofibers against E. coli and S. aureus reached over 79.5 % and 90 %, respectively. In vivo experiments demonstrated that these nanofibers alleviated wound inflammation and promoted collagen and angiogenesis, exhibition superior anti-inflammatory and wound-healing effects. The biosafety tests indicated that the nanofibers loaded with 1 % and 3 % Cu-MOFs exhibited good biocompatibility, while the nanofibers loaded with 5 % Cu-MOFs showed slight cytotoxicity. This study provides a novel strategy for the design and fabrication of advanced wound dressings in biomedical applications.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Zerui Su,Jian Zhang,Yang Li,Zheyu Qiao,Ziyuan Qiao,Lihang Wei,Xiaoyuan Qin,Xiaoxue Mu,Feng-Shou Xiao
Cu-based catalysts are crucial for the dehydrogenation of ethanol (EtOH) to acetaldehyde (AcH); however, their performance decreases at higher temperatures due to the low Tammann temperature of Cu species. In this study, we synthesized silica-supported Cu catalysts using microwave-assisted wet-kneading. Characterization revealed a typical core–shell structure (Cu@SiO 2 -WK), which demonstrated high activity, excellent selectivity, and superior stability for ethanol dehydrogenation. The Cu@SiO 2 -WK achieved 96.2 % EtOH conversion with 99.9 % selectivity to AcH at 260 °C. After 160 h of reaction, it maintained an EtOH conversion of 90.5 % and AcH selectivity of ∼99.9 %. Following simple calcination, the catalyst’s activity was fully regenerated to 96.1 %. Model catalysts and in situ FT-IR spectra indicate that the core–shell structure significantly enhances the catalyst’s performance in the dehydrogenation of EtOH to AcH.
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Nanomedicine
·
2024
·
IF 6.6
Ying Yang,Bixia Zhou,Min Li,Yishuai Sun,Xulei Jiang,Xinxin Zhou,Chengjun Hu,Dou Zhang,Hang Luo,Wuyuan Tan,Xinghua Yang,Shaorong Lei
Purpose The treatment of craniofacial bone defects caused by trauma, tumors, and infectious and degenerative diseases is a significant issue in current clinical practice. Following the rapid development of bone tissue engineering (BTE) in the last decade, bioactive scaffolds coupled with multifunctional properties are in high demand with regard to effective therapy for bone defects. Herein, an innovative bone scaffold consisting of GO/Cu nanoderivatives and GelMA-based organic-inorganic hybrids was reported for repairing full-thickness calvarial bone defect.Methods In this study, motivated by the versatile biological functions of nanomaterials and synthetic hydrogels, copper nanoparticle (CuNP)-decorated graphene oxide (GO) nanosheets (GO/Cu) were combined with methacrylated gelatin (GelMA)-based organic-inorganic hybrids to construct porous bone scaffolds that mimic the extracellular matrix (ECM) of bone tissues by photocrosslinking. The material characterizations, in vitro cytocompatibility, macrophage polarization and osteogenesis of the biohybrid hydrogel scaffolds were investigated, and two different animal models (BALB/c mice and SD rats) were established to further confirm the in vivo neovascularization, macrophage recruitment, biocompatibility, biosafety and bone regenerative potential.Results We found that GO/Cu-functionalized GelMA/β-TCP hydrogel scaffolds exhibited evidently promoted osteogenic activities, M2 type macrophage polarization, increased secretion of anti-inflammatory factors and excellent cytocompatibility, with favorable surface characteristics and sustainable release of Cu2+. Additionally, improved neovascularization, macrophage recruitment and tissue integration were found in mice implanted with the bioactive hydrogels. More importantly, the observations of microCT reconstruction and histological analysis in a calvarial bone defect model in rats treated with GO/Cu-incorporated hydrogel scaffolds demonstrated significantly increased bone morphometric values and newly formed bone tissues, indicating accelerated bone healing.Conclusion Taken together, this BTE-based bone repair strategy provides a promising and feasible method for constructing multifunctional GO/Cu nanocomposite-incorporated biohybrid hydrogel scaffolds with facilitated osteogenesis, angiogenesis and immunoregulation in one system, with the optimization of material properties and biosafety, it thereby demonstrates great application potential for correcting craniofacial bone defects in future clinical scenarios.
✓ 已验证
DOI
PubMed
高影响因子
DALTON TRANSACTIONS
·
2025
·
IF 3.3
Xue-Qing Xu,Shen Yu,Xing-Yu Yue,Zhan Liu,Jia-Min Lyu,Yi-Long Wang,Zhi-Yi Hu,Yu Li,Li-Hua Chen,Bao-Lian Su
Phenol is an important intermediate for high value chemicals. Current phenol production via a three-step cumene process causes severe energy-waste and environmental problems. The conversion of benzene to phenol under mild condition can be achieved by oxidation with Cu-based zeolites. However, conventional microporous zeolite suffers from severe diffusion limitation, especially when bulky molecules are involved, such as benzene. In this work, we used a hierarchically macro-meso-microporous ZSM-5 single crystal (Hier-ZSM-5) as substrate for Cu species (Cu@Hier-ZSM-5). Irregular morphology of opal-like Hier-ZSM-5 exhibits abundant surface Si-OH groups and provides a platform for stabilizing Cu2+ sites. Meanwhile, hierarchical porosity provides significantly improved diffusion ability of bulky molecules. As a result, excellent selective oxidation performance of benzene was obtained with the Cu@Hier-ZSM-5, achieving a conversion of 77% and a phenol selectivity of 73%, which is 1.5 times and 2 times of these obtained with a catalyst based on a microporous ZSM-5, respectively. Species of CuOOH were identified as an important intermediate for benzene oxidation. This hierarchical zeolite system with a synergistic effect of site anchoring and molecular diffusion presents an excellent platform for catalyst design.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Frontiers of Chemical Science and Engineering
·
2024
·Vol. 18
·期 7
·1-11
·
IF 4.3
Chen Yi,Chen Shaowei,Shao Yan,Quan Cui,Gao Ningbo,Fan Xiaolei,Chen Huanhao
Electrified non-thermal plasma (NTP) catalytic hydrogenation is the promising alternative to the thermal counterparts, being able to be operated under mild conditions and compatible with green electricity/hydrogen. Rational design of the catalysts for such NTP-catalytic systems is one of the keys to improve the process efficiency. Here, we present the development of siliceous mesocellular foam (MCF) supported Cu catalysts for NTP-catalytic CO 2 hydrogenation to methanol. The findings show that the pristine MCF support with high specific surface area and large mesopore of 784 m 2 ·g −1 and ∼8.5 nm could promote the plasma discharging and the diffusion of species through its framework, outperforming other control porous materials (viz., silicalite-1, SiO 2 , and SBA-15). Compared to the NTP system employing the bare MCF, the inclusion of Cu and Zn in MCF (i.e., Cu 1 Zn 1 /MCF) promoted the methanol formation of the NTP-catalytic system with a higher space-time yield of methanol at ∼275 µmol·g cat −1 ·h −1 and a lower energy consumption of \(26.4\ \text{kJ}\cdot \text{mmol}_{\text{CH}_{3}\text{OH}}\!^{-1}\) (conversely, ∼225 µmol·g cat −1 ·h −1 and \(\sim71\ \text{kJ}\cdot \text{mmol}_{\text{CH}_{3}\text{OH}}\!^{-1}\) , respectively, for the bare MCF system at 10.1 kV). The findings suggest that inclusion of active metal sites (especially Zn species) could stabilize the CO 2 /CO-related intermediates to facilitate the surface reaction toward methanol formation.
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2022
·
IF 7.139
Dihua Huang,Yiming Zhu,Binglong Mao,Jun Zhang,Quanxing Liu,Xiang Li,Kexing Song
Felicitously incorporating noble metals with some transition metals to fabricate composite nanoagents with diverse shape and microarchitecture is a more promising solution for obtaining highly effective and cost-cutting catalyst. Herein, we report a facile and flexible synthesizing tactics, or Galvani substitution modulated self-assembly protocol, to fabricate Cu nanowire (core)-Pt nanoparticle (shell) unique microarchitecture (Cu-NWs@Pt) with porously hiberarchy. The comprehensive characterizations reveal that as-fabricated bimetallic nanowires with average aspect ratio of ca. 80 and apparent diameter of ca 60 nm, hold the razor-thin Cu–Pt alloy sublayer in the metallic contact interface, with the prebuilt Cu nanowires cladded by orderly oriented Pt nanograins to form loose, porous and stratiform structure. The thickness and microarchitecture of the Pt shell could be duly regulated by adjusting dosage of the metal precursors and substituting time. The verified formation of electronic synergic effect in the bimetallic nanoagents avails the adsorption of H to form metal-H species, leading to enhance the catalytic activity . Their catalytic ability overall increases with rising of Pt/Cu molar ratios , of which the Cu 0.6 Pt 0.4 even exceeds Pt-NPs, with a turnover frequency of 77.26·min −1 and apparent activation energy of 30.25 kJ·mol −1 , and maintaining 89% of the incipient catalytic ability after 5 recycling runs.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）