ACS Applied Materials & Interfaces
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2025
·
IF 8.2
Xiaosen Li,Chun Li,Yifan Fang,Xin Liang,Zhou Fang
Chemical agents present significant threat to international peace, security, and human health due to their potential toxicity. Therefore, developing a sensitive, rapid, and on-site detection method is of great importance. Herein, we developed a highly sensitive and selective glove-based electrochemical sensor based on a metal–organic-framework-modified screen printed electrode (SPE) for chemical agent marker detection. Layered copper benzene-1,3,5-tricarboxylate (Cu-BTC) was successfully constructed to modify screen-printed electrodes (SPE) for detecting electrically inactive ethyl methyl phosphonate (EMPA) and isopropyl methyl phosphonate (IMPA). Additionally, gold nanoparticles (AuNPs) reduced by plasma technology have been applied to create gold nanoparticle-encapsulated copper benzene-1,3,5-tricarboxylate-modified screen-printed electrode (Au@Cu-BTC/SPE) composites for detecting thiodiglycol (TDG). The large surface area and porous structure of Cu-BTC and Au@Cu-BTC enhance the target adsorption and ion diffusion and the efficient use of catalytic materials for rapid electron transfer and zero-distance catalysis. The limit of detection (LOD) was determined to be 4.13 × 10–16 M for EMPA, 7.46 × 10–12 M for IMPA, and 4.05 × 10–12 M for TDG. Following multiple cycles and extended exposure, the sensor demonstrated exceptional repeatability and stability. The response current of Cu-BTC to EMPA and IMPA decreased by 6.75% and 4.86%, and the peak value of Au@Cu-BTC to TDG decreased by 3.3% after 4 weeks, respectively. The peak current showed a good linear relationship with the concentrations of the three target substances, with R2 values all greater than 0.99. The interaction mechanism between the modified electrode and the targets was investigated by density functional theory (DFT) with the generalized gradient approximation of the PBE functional. The results showed that compared with other metal ions, Cu2+ could coordinate tighter with organophosphates. The established MOF-modified SPE integrated with a protective glove sensor was applied for the detection of real-world samples and demonstrated a broad spectrum of practical applications.
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PubMed
高影响因子
International Journal of Minerals Metallurgy and Materials
·
2025
·Vol. 32
·期 12
·3072-3085
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IF 7.2
Zhang Qian,Liu Bo,An Changcong,Li Qiong,Liu Jiling,Wei Siyu,Fan Jiaxing,Sun Zhe,Zhang Dichuan,Pulatov Bakhtiyor
The effect of heavy metals on the properties and hydration of blast furnace slag–cement composites (BFS-CC) remain unclear. In this study, two BFS-CC (denoted as DBFS-CC and WBFS-CC) were prepared by dry and wet grinding of BFS, respectively. The effect of Cu(II) on BFS-CC’s properties and hydration was investigated by adding representative copper contaminants (CuO, CuCl 2 , and CuS) to the composites. Adding 1.0wt% CuO and 0.5wt% CuS increased the 3-d compressive strength of DBFS-CC by 14.9% and 5.7%, respectively, but suppressed the 3-d strength of WBFS-CC. This trend reversed at 28-d curing, where adding 1.5wt% CuO, 2.0wt% CuCl 2 , and 1.5wt% CuS enhanced the compressive strength of WBFS-CC by 23.4%, 6.2%, and 13.6%, respectively, but adversely affected the strength of DBFS-CC. For 28-d hydration, adding CuCl 2 decreased the hydration degree of DBFS-CC but enhanced that of WBFS-CC. Adding CuO promoted the hydration degree of both composites, while adding CuS exhibited inhibitory effects. DBFS-CC immobilized CuCl 2 better due to a higher hydration degree, while WBFS-CC immobilized CuO and CuS better due to having finer unhydrated BFS particles and a denser matrix. This study not only focuses on the Cu(II) immobilization effect but also reveals the differential effects of Cu(II) species on the hydration process, providing novel insights into heavy metal interactions in BFS-CC systems and their safe disposal.
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高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Linhai Yang,Longhao He,Jianghe Chen,Xia Zhao,Yabin Li,Zuoyan Chen,Yang Fu,Shaojing Li,Lan Wang,Zhitao Zong
Ultrahigh-loading Cu single atoms (26.93 wt%) are atomically dispersed on g-C 3 N 4 via nitrogen vacancy anchoring. • Nitrogen vacancies act as electron reservoirs to accelerate the Cu(I)/Cu(II) redox cycling and H 2 O 2 activation. • A non-radical pathway dominated by Singlet oxygen( 1 O 2 ) is established via surface-mediated O 2 •⁻ disproportionation. • The catalyst overcomes traditional Fenton limitations and degrades tetracycline efficiently over a pH range of 7.68-11.33. The practical application of single-atom catalysts (SACs) in advanced oxidation processes (AOPs) for wastewater treatment is severely constrained by their limited metal loading. Herein, we report the synthesis of an ultrahigh-loading copper single-atom catalyst (SA-Cu/g-C 3 N 4 ) via a supramolecular pre-assembly strategy coupled with a two-step thermal polycondensation. The resulting catalyst achieved an exceptionally high Cu loading of 26.93 wt% with maintaining atomic dispersion, as confirmed by aberration-corrected electron microscopy and X-ray absorption fine structure spectroscopy. Structural analyses revealed that isolated Cu(I) species are stabilized as coordinatively unsaturated Cu(I)–N 3 moieties adjacent to nitrogen vacancies (NVs). In Fenton-like degradation of tetracycline, SA-Cu/g-C 3 N 4 attains 86.4% removal within 60 min and sustains high catalytic activity across a broad pH range. Mechanistic investigations demonstrated that NVs act as localized electron reservoirs to accelerate the Cu(I)/Cu(II) redox cycle, while the Cu(I)–N 3 sites facilitate the selective conversion of H 2 O 2 to singlet oxygen ( 1 O 2 ) via a surface-mediated superoxide disproportionation pathway. Consequently, a non-radical oxidation regime dominated by 1 O 2 is established, enabling efficient pollutant degradation with enhanced selectivity and stability. This work not only provides a viable strategy for constructing high-loading SACs but also deepens the mechanistic understanding of vacancy-engineered non-radical AOP systems for environmental remediation. Download: Download high-res image (236KB) Download: Download full-size image
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高影响因子
ACTA PHYSICO-CHIMICA SINICA
·
2017
·Vol. 33
·期 8
·1672-1680
·
IF 0.767
LIAO Pei-Yi,ZHANG Chen,ZHANG Li-Jun,YANG Yan-Zhang,ZHONG Liang-Shu,GUO Xiao-Ya,WANG Hui,SUN Yu-Han
A series of Cu/Co/Mn/Al catalysts derived from hydrotalcite precursors with different Cu/Co molar ratios (0, 0.1, 0.5, 1.0, and 2.0) were prepared and used for the synthesis of higher alcohols from syngas. N2 physical adsorption desorption, inductively coupled plasma atomic
emission spectrometry (ICP-AES), X-ray diffraction (XRD), scanning electron microscopy (SEM), hydrogen temperature-programmed reduction (H2-TPR), thermogravimetry (TG), and high-resolution transmission electron microscopy (HRTEM) techniques were employed to investigate the physical
and chemical properties of the Cu/Co/Mn/Al catalysts. The results show that the optimum Cu content can increase specific surface area, improve reducibility, and form regular layered structure to provide more uniform distribution of active sites, thereby enhancing catalytic activity and alcohol
selectivity. When the Cu/Co molar ratio was 0.5, the yield of alcohol and the alcohol selectivity reached the maximum values of 0.071 g·g-1·h-1 and 35.9%, respectively.
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高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2022
·Vol. 24
·期 12
·7521-7530
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IF 3.945
Qixiao Gai,Shoutian Ren,Xiaochun Zheng,Wenjun Liu,Quanli Dong
Low-cost and high-abundance Cu nanostructures are potential near-infrared (NIR) surface plasmonic resonance (SPR) photosensitizers for carbon nitride (C3N4) photocatalysts, but their low activity and stability need to be improved. In this article, doping S into C3N4 (S-C3N4) creates anchoring sites for photo-deposited Cu nanoparticles (NPs), and the spontaneous construction of S-Cu bonds is realized between S-C3N4 and Cu NPs. The optimal hydrogen evolution rate of 1.64 mmol g−1 h−1 is obtained for S-C3N4–Cu, which is 5.5, 4.6 and 1.7 times that of pure C3N4, S-C3N4 and S-C3N4–Cu, respectively. With further loading of a Pt co-catalyst to confirm the role of Cu NPs and improve the photocatalytic activity of the SCN–Cu, the photocatalytic rate can reach up to 14.34 mmol g−1 h−1. Due to the NIR SPR effect of Cu NPs, the apparent quantum efficiency (AQE) of S-C3N4–Cu at 600 and 765 nm is 2.02% and 0.47%, respectively. The enhanced photocatalytic performance of S-C3N4–Cu compared with C3N4–Cu is mainly due to the introduced S–Cu bonds that improve the injection rate of hot electrons. This solution provides a simple and efficient interface optimization strategy for the construction of efficient NIR-driven photocatalysts.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2016
·
IF 5.31
Yanghe Fu,Lai Xu,Huanmei Shen,Huan Yang,Fumin Zhang,Weidong Zhu,Maohong Fan
The Cu and Co mixed metal–organic frameworks (MOFs) MOF-74(Cu/Co) with different Cu/Co ratios were prepared via a facile one-pot synthesis method and then characterized by means of various techniques. Whatever the Cu/Co ratios in the synthesized MOFs were, both Cu 2+ and Co 2+ could be uniformly distributed in MOF-74. The synthesized MOF-74(Cu/Co) materials were used as catalysts in styrene oxidation with O 2 under solvent-free and mild reaction conditions. The results show that the catalytic properties of MOF-74(Cu/Co) can be tuned by varying the Cu/Co ratio in MOF-74. MOF-74(Cu) has a rather low catalytic activity but an absolute selectivity for benzaldehyde while MOF-74(Co) possesses a relatively higher catalytic activity, leading to the formation of benzaldehyde, styrene epoxide, and phenylacetaldehyde as well as to polystyrene. It is surprising that the incorporation of Cu 2+ in MOF-74(Co) can completely inhibit the polymerization of styrene while the incorporation of Co 2+ in MOF-74(Cu) can significantly enhance the conversion of styrene to benzaldehyde, styrene epoxide, and phenylacetaldehyde. In addition, by increasing the Co 2+ amount in MOF-74(Cu/Co), the conversion of styrene and the selectivity for styrene epoxide and phenylacetaldehyde are increased while the selectivity for benzaldehyde is decreased. Moreover, the catalytic properties of MOF-74(Cu/Co) were compared with those of the physical mixtures of MOF-74(Cu) and MOF-74(Co), demonstrating the synergetic effects of Co 2+ and Cu 2+ in MOF-74(Cu/Co) on the catalytic oxidation of styrene. The current work reveals a strategy to incorporate multiple metal cations into MOFs for enhancing a specific catalytic property or achieving a new catalytic property.
研究领域:
材料科学
·
催化化学
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Ying Chen,Kun Ge,Xing Liang Cheng,Yuling Hu
Cu@CuO@TCPP-Cu heterojunction with electronic bridge was fabricated. • Cu 2+ bridge boosts charge transfer and strengthens interfacial coupling in Cu@CuO@TCPP-Cu. • The heterojunction shows enhanced SERS performance and POD-like catalytic activity. • Dual-target strategies enable sensitive PAT and H 2 O 2 detection for food safety monitoring. Engineering heterojunctions with efficient carrier separation and interfacial charge transfer is crucial for high performance surface-enhanced Raman spectroscopy (SERS) and enzymatic catalytic activity. However, conventional asynchronous synthesized heterostructures suffer from insufficient interfacial contact, which severely restricts charge transfer kinetics and SERS/catalytic response. Here, we rationally engineer a novel flower-layered Cu@CuO@TCPP-Cu heterojunction mediated by an in situ formed “electron bridge” for high sensitivity sensing applications. A facile surface oxidation technique was employed to grow flower-like CuO in situ on a Cu foil, followed by surface-initiated encapsulation of two-dimensional MOF of TCPP-Cu through coordination between TCPP and Cu 2+ ions released from CuO. The dissociated Cu 2+ ions at the interface serve as an “electronic bridge” between CuO and TCPP-Cu, which drastically shortens the charge transfer distance and enhances interfacial coupling. This unique heterojunciton exhibits remarkable synergy in SERS signal enhancement and peroxidase (POD)-like catalytic activity, as confirmed by density functional theory (DFT) calculations. A robust solid-state SERS sensing chip was thereby constructed. Two distinct analytical strategies were subsequently established, including aptamer-mediated specific detection of patulin (PAT) and enzyme mimicking - amplified turn-on SERS assay for quantitative analysis of H 2 O 2 . The as-constructed sensing chip exhibits excellent analytical sensitivity and selectivity, achieving low limits of detection of 0.640 μg/L for PAT and 13.8 μg/L for H 2 O 2 , respectively. Furthermore, the chip successfully identified both analytes in complex food samples with high accuracy. This work provides a versatile engineering strategy for constructing high performance heterojunction toward advanced analytical and food safety applications. Herein, a novel flower-layered Cu@CuO@Cu-TCPP heterojunction is constructed via an electronic bridge strategy. The bridge-mediated interfacial electron transfer synergistically boots peroxidase-like catalytic activity and SERS performance. Integrating aptamer recognition with nanozyme amplified turn-on SERS sensing enables highly sensitive detection of PAT and H 2 O 2 , offering a universal heterojunction design paradigm and broadening applications in food safety monitoring. Download: Download high-res image (166KB) Download: Download full-size image
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高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Shangpu Zhuang,Yilin Lei,Fan Xue,Tao Wei,Jiahui Chu,Mifen Cui,Zhuxiu Zhang,Ruiping Wei,Jihai Tang,Xu Qiao
Unraveling the synergistic interplay between Cu 0 /Cu + and support sites in Cu-based catalysts, coupled with oxygen vacancy-mediated active site modulation and their impact on hydrogenation performance metrics, remains a critical challenge in heterogeneous catalysis. Herein, we engineered a family of MOF-derived Cu/CeO 2 catalysts with tunable Cu loadings and oxygen vacancy(O V ) concentrations, featuring Cu 0 -Cu + -O V interfacial sites, through a MOF-mediated pyrolysis strategy. Operando DRIFTS, XPS, and Raman analyses revealed dynamic restructuring of active sites during hydrogenation of cyclohexyl acetate. The optimized catalyst achieved 98.0 % substrate conversion and 97.3 % cyclohexanol selectivity at 250 ℃ under 3 MPa H 2 , exhibiting a TOF 2.8-fold higher than conventional Cu/CeO 2 . The results indicate that the superior catalytic performance of Cu/CeO 2 -MOF should be attributed to the synergistic effects of Cu + , Cu 0 , and O V . This synergy enhances the ability of catalysts to adsorb and activate cyclohexanone, as well as its hydrogen dissociation capability. Further analysis indicates that O V exerts a direct influence on product selectivity. Moreover, the concentration of O V modulates the ratio of Cu + /(Cu + +Cu 0 ), which significantly affects conversion efficiency of the reaction. This work introduces an innovative approach to designing the electronic structure of copper-based catalysts, thereby optimizing the hydrogenation reactions of carbonyl compounds.
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高影响因子
Journal of Materials Research and Technology-JMR&T
·
2026
·
IF 7.3
Bingnan Chen,Junrui Xu,Hua Sun,Xiang Zhang
Graphene/Cu composites have attracted considerable attention because they combine the excellent properties of both Cu and graphene. However, graphene agglomeration, weak interfacial bonding, and insufficient particle contact often lead to poor densification and limited overall performance of the composites. In this work, Cu matrix composites with different GO contents were fabricated by cold pressing and sintering using rGO/Cu composite powders prepared through molecular-level mixing. During the reduction process, Cu ions were in-situ transformed into nano-Cu particles embedded within the rGO interlayers or anchored onto the rGO surface. The embedded nano-Cu particles enlarged the graphene interlayer spacing, suppressed agglomeration, and strengthened the rGO/Cu interface, while the anchored nano-Cu particles promoted Cu–Cu metallurgical bonding and improved densification during sintering. The results show that CCu1 exhibited the optimum electrical conductivity of 95.10% IACS and a thermal conductivity of 327 W·m−1·K−1, corresponding to increases of 21.4% and 14.7%, respectively, compared with the pure Cu counterpart prepared under identical processing conditions. These improvements arise from the combined effects of enhanced densification and interfacial regulation induced by the embedded–anchored rGO/Cu architecture. The highest compressive strength of 280.2 MPa was achieved at 0.3 wt% GO, while the average friction coefficient decreased from 0.111 to 0.055. These results demonstrate that the interfacial structure between Cu particles can be effectively regulated through the design of rGO/Cu composite powders under cold pressing–sintering conditions. Without relying on SPS or other high-energy sintering techniques, the densification behavior, electrical and thermal transport, mechanical strength, and tribological performance of Cu matrix composites can be simultaneously improved, thereby providing a new strategy for the facile and scalable fabrication of high-performance Cu matrix composites.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Yaoyu Zhang,Yuxiong Wang,Yue Liu,Huimin Xu,Zhongbiao Wu
Pt@Cu-ZSM-5@CuO x catalyst was constructed for the catalytic oxidation of acetonitrile (AN), which achieved a complete mineralization rate and more than 95 % N 2 selectivity within 300–450 °C. Characterization results revealed that the satisfactory synergistic action of hydrolysis and oxidation pathways was well achieved. The NO x release from CN oxidation reaction on out-layer CuO x species and NH x species over-oxidation over Pt sites could be eliminated by NH 3 from CN hydrolysis reaction on Cu ions via internal selective catalytic reduction mechanism. The deep oxidation of carbon-containing intermediates (such as CO etc.) during CN decomposition over Cu species effectively occurred over Pt site. The encapsulation of Pt inner ZSM-5 zeolite not only strengthened low-temperature mineralization rate compared to Cu/ZSM-5 sample, but also inhibited NO x release caused by over-oxidation of AN at an elevated temperature with co-impregnation of Pt species over Cu/ZSM-5. This work provided a viable strategy for designing catalysts to effective abatement of NVOCs.
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高影响因子
Catalysis Science & Technology
·
2022
·Vol. 12
·期 19
·5879-5890
·
IF 6.177
Dengfeng Dai,Chao Feng,Minmin Wang,Qingzhou Du,Dandan Liu,Yuan Pan,Yunqi Liu
Biomass-based chemicals as a renewable alternative to petroleum-based chemicals are of great significance. The conversion of biomass-based furfuryl alcohol to pentanediol, including 1,5-pentanediol and 1,2-pentanediol, is explored over a series of bifunctional Cu/MFI catalysts in a continuous-flow reactor. These catalysts are synthesized by supporting copper nanoparticles on MFI zeolites with varying molar ratios of SiO2/Al2O3. Among them, the Z60-10Cu catalyst containing balanced Cu0–Cu+ and Brønsted acid sites exhibits excellent performance, and a high furfuryl alcohol conversion of 99.5% and selectivity of 85.2% for 1,5-pentanediol (69.2%) and 1,2-pentanediol (16.0%) could be achieved (hydrogen pressure: 2.5 MPa) at 160 °C. The experimental results and the results obtained using the DFT technique revealed that the high catalytic activity realized during the processes of ring-opening and hydrogenation could be attributed to the synergistic effect between the Cu species and Brønsted acid sites. The Brønsted acid sites on the Si(OH)Al groups significantly affect the ring-opening process of furfuryl alcohol. The methoxy group on furfuryl alcohol adsorbs on the Cu+ sites, and the hydrogenation saturation of the ring-opening intermediate is realized under the influence of the activated hydrogen units on the Cu0 sites. The results reported herein could help promote the continuous production of high value-added pentanediol from biomass-based raw materials in the presence of non-noble metal catalysts. An economical and feasible path for the transformation of biomass resources into high value-added fine chemicals could also be developed.
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高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2026
·
IF 10.6
Dingqiang Zhang,Xiaoqun Wu,Tengchao Jiao,Weizhen Zhang,Jiahao He,Yanhua Xie,Yingming Hu,Yao Wei
Trace-Cu(II)/CaO 2 /PAC achieves > 95% algal removal in natural waters. • Pre-oxidation degrades algal extracellular matter to aid coagulation. • PAC mitigates matrix interference, indirectly maintaining oxidation. • Intracellular ROS induces functional death without severe lysis. Harmful algal blooms release microcystins and other metabolites that threaten aquatic ecosystems and human health. Conventional removal methods often induce cell lysis and are affected by matrix interference in natural waters, limiting their practical applicability. A sequential process coupling trace-Cu(II)/CaO 2 pre-oxidation with PAC coagulation was developed for efficient algal removal. The system removed 98.5% of M. aeruginosa from lake water. During the 10-min pre-oxidation stage, trace-Cu(II)/CaO 2 effectively degraded extracellular microcystin-LR (MC-LR) and the dissolved organic matter (DOM) surrounding algal cells, thereby weakening electrostatic repulsion and enhancing coagulation efficiency. The coupled process generated Cu(III), •OH, •O 2 − , and 1 O 2 within the cells, which led to functional cell death without severe membrane rupture. Conventional molecular dynamics (MD) simulations confirmed the stability of a representative pentameric cation-channel model, and steered molecular dynamics (SMD) further showed that Cu 2+ and H 2 O 2 could be guided through its pore under an applied axial bias, supporting the physical plausibility of channel-mediated intracellular access. Mechanistically, OH − generated during CaO 2 hydrolysis promoted the Cu(II)/Cu(I)/Cu(III) catalytic cycle and sustained reactive species production, with Cu(III) as the dominant contributor to functional inactivation (68.5%). These findings establish an innovative and practical strategy for the safe and effective removal of algae from contaminated natural waters. Download: Download high-res image (297KB) Download: Download full-size image
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高影响因子
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