ACS Applied Materials & Interfaces
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2026
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IF 8.2
Tianlong Tan,Hai Liu,Wenlong Cao,Lei Yang,Shujing Ju,Caiyu Chen,Ewald Janssens,Guowei Han,Dachun Lu,Jue Wang,Qinfang Zhang
The electrochemical CO2 reduction reaction (CO2RR) is one of the most promising pathways to achieving carbon neutrality. However, in acidic electrolytes, the CO2RR tends to suffer from competitive hydrogen evolution side reactions. Alkaline electrolytes are typically employed to suppress side reactions and promote the formation of valuable multicarbon (C2+) products (e.g., ethylene(C2H4)). In this study, we fabricated surface-loaded copper cluster catalysts with particle sizes below 5 nm by magnetron sputtering and inert gas condensation in combination with cluster beam deposition. This approach enabled precise control over the catalyst surface structure, allowing for in-depth investigation of the synergistic effects between the catalyst microstructure and its catalytic microenvironment. We demonstrate that the Faradaic efficiency (FE) for CO2-to-C2H4 conversion exceeds 50% across a broad current density range of 50 to 180 mA cm–2 in a flow cell using 1 M KOH electrolyte. Compared with a pristine Cu/PTFE catalyst, the optimized Cu cluster catalyst not only exhibits a significant enhancement in FEC2H4 but also expands the effective current density range. Furthermore, finite element simulations combined with in situ Raman spectroscopy reveal synergistic interactions among interfacial species (e.g., *CO, OH–, and K+). Therefore, this study proposes a general strategy to regulate the dynamic evolution of catalytic interfaces through an initial nanostructure design, thereby opening a promising avenue for the selective conversion of CO2 to ethylene.
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Reaction Kinetics Mechanisms and Catalysis
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2026
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IF 2.1
Hu Yanan,Yang Dawei,Li Qiaoling,Yu Chengcheng
Herein, a Cr-doped Ni-Cu/(NiOH) 2 coating supported on nickel foam (Ni-Cu-Cr/NF) was fabricated via a facile one-step electrodeposition strategy and employed as an efficient electrocatalyst for the hydrogen evolution reaction (HER) in alkaline media. In 1 M NaOH, Ni–Cu–Cr/NF requires an overpotential of 30 mV to reach a current density of − 10 mA cm⁻ 2 and exhibits a Tafel slope of 55 mV dec⁻ 1 . These electrochemical results are associated with the combined effects of the multicomponent composition and an increased electrochemically active surface area (ECSA). The ECSA of Ni–Cu–Cr/NF is approximately 23.6 times that of Ni–Cu/NF. In addition, the catalyst maintains stable operation for 60 h during continuous electrolysis. This work presents a simple preparation method for the novel Ni-Cu-Cr/NF catalyst and systematically investigates the impact of Cr doping on enhancing catalytic performance, providing an effective strategy for the development of nickel-based alloy electrocatalysts. Graphical
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MATERIALS LETTERS
·
2026
·
IF 2.6
Ziqi Xu,Yuanbang Zhao,Ruoyu Wang,Haitao Ma,Yunpeng Wang,Hanying Wang
Copper-based materials are attractive for non-enzymatic glucose sensing due to their high activity and low cost. However, conventional powder-based electrodes often suffer from high interfacial resistance and limited active sites. Herein, we develop a facile strategy combining electrodeposition and anodization to directly fabricate self-supporting porous Cu₂O electrodes on copper foil. This binder-free electrode exhibits outstanding electrocatalytic performance, achieving a sensitivity of 946.19 μA·mM −1 ·cm −2 and a detection limit of 1.01 μM. Notably, it shows an exceptionally wide three-stage linear range (0.02–5.71 mM), covering physiological glucose levels in tears, saliva, interstitial fluid, and blood. The sensor also demonstrates excellent anti-interference ability and reproducibility, offering a promising approach for practical glucose detection.
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FUEL
·
2026
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IF 7.8
Aolue Yan,Yanhong Quan,Yan Li,Jun Ren
Cu aggregation has been a significant obstacle to promoting the catalytic performance of methanol dehydrogenation for the production of high hydrogen storage chemical methyl formate (MF). Catalysts composed of Cu with different loading ( x = 5, 10, 15, 20 wt%) supported on dealuminated mesoporous Y zeolite (mY-deAl) had been prepared by mechanical grinding method and used in methanol dehydrogenation for MF. 10Cu/mY-deAl with appropriate Cu loading exhibited the largest MF yield of 31.9%, which was approximately 30 times higher than that of Cu/mY of 1.0% under 280 °C and 0.2 MPa. The excellent behavior was proved to be attributed to the development of amounts of mesoporous allowing the Cu particle enter into as well as the formation of Al vacancies anchoring optimal amount of Cu, induced by the dealumination of Y. Furthermore, the closely linear relationships between Cu dispersion and TOF Cu , along with that between active Cu 0 concentration and MF selectivity were revealed. The less Cu loading could not provide enough active sites for the conversion of methanol (22.0%) even though having the best dispersion, while the excessive Cu loading would result in Cu aggregation in the mesopores deriving from the limit of Al vacancies. This contribution innovatively provided a kind of Cu supported Y catalyst and clearly elucidated the promotion mechanism of catalytic performance driven by the synergy of Al vacancies and mesopores in methanol dehydrogenation to MF.
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Miao Miao,Qijie Jin,Yan Shao,Feng Zeng,Huanhao Chen
This study developed a ternary CuCoIn/Al 2 O 3 catalyst for the direct hydrogenation of CO 2 to ethanol. The incorporation of Co and In species created a synergistic effect that enhanced CO 2 interaction and activation. This synergy also modulated the electronic state of surface Cu atoms, increasing the proportion of Cu + species, which promoted the non-dissociative adsorption of CO and the formation of *HCOO intermediates. These changes significantly enhanced C C coupling, leading to the generation of key ethoxy intermediates. The optimized catalyst, with a Co/(Co + Cu) ratio of 0.08 and 1.5 wt% In loading, achieved over 90% ethanol selectivity among total alcohols at 260 °C, along with a relatively high ethanol production rate of 33.0 g EtOH kg cat −1 h −1 . This work presented an effective strategy for designing high-performance, non-precious metal catalysts for selective CO 2 -to-ethanol conversion.
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RSC Advances
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2026
·Vol. 16
·期 18
·16748-16755
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IF 6.1
Yuqi Zhang,Yuan Yao,Peihao Dou,Qing Cheng,Yanqiang Zhang
An ionic liquid (IL)-H2O2 propellant offers a green alternative to the traditional hydrazine-N2O4 system. Due to the weak oxidizing ability of H2O2, typical ILs cannot be spontaneously ignited. To address this issue, catalytic ignition was proposed, and a series of metal complex catalysts with the formula M(vim)2(DCA)2 (M = Mn, Fe, Co, and Cu) were synthesized. Single-crystal X-ray diffraction analysis shows that the Mn, Fe and Co complexes adopt an octahedral geometry, while the Cu complex exhibits a planar quadrilateral geometry. The physicochemical properties (Td, ΔHc, ΔHf, and Isp) of the fuels (10 wt% M(vim)2(DCA)2 + 90 wt% [BMIM]DCA) were evaluated. Dynamic light scattering and UV-vis spectroscopy analyses confirm that the four complexes disperse well in [BMIM]DCA. Ignition tests reveal that Cu(vim)2(DCA)2 exhibits the best catalytic performance for the ignition of [BMIM]DCA with H2O2, achieving tid as short as 21 ms. EPR studies indicate that Cu(vim)2(DCA)2 catalyzes H2O2 to generate reactive oxygen species (·OH, ·O2−, and 1O2), which subsequently induce the spontaneous ignition of [BMIM]DCA. DFT calculations reveal that the zero-dimensional geometry of Cu(vim)2(DCA)2 features an unsaturated Cu center and electron-rich ligand framework. This typical structure enables efficient electron transfer to activate H2O2, boosting ROS generation and ignition. This work clarifies the crucial role of the metal center in the IL-H2O2 system and provides an important insight into the catalytic ignition of the “double-green” propellants.
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JOURNAL OF MOLECULAR STRUCTURE
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2026
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IF 4.9
Yu-Fen Zhang,Yi-Ping Tian,Si-Yu Tian,Xiao Wang,Ji-Jiang Wang,Long Tang,Er-Lin Yue,Xiang-Yang Hou
Developed novel electrochemical sensors with nano-sheet structured, addressing the low conductivity and poor stability of traditional MOFs in sensing applications. As far as we know, this is the first report. • Realized simultaneous determination of Cu²⁺ and Hg²⁺ with outstanding performance: wide linear range, low detection limit, rapid electrochemical response, excellent selectivity against interfering ions, good reproducibility, and long-term stability. • Comprehensively elucidated the sensing mechanism by integrating Laviron’s adsorption theory, involving the intrinsic electrochemical activity of MOF nanosheets and specific interactions between MOF crystalline frameworks and target metal ions. • Validated practical applicability in complex real matrices (seaweed food samples) with satisfactory accuracy and recoveries meeting international analytical standards, enabling on-site heavy metal monitoring. • Provided a rational design strategy for the development of high-performance MOF-based sensors, highlighting significant practical potential in food safety and environmental heavy metal detection. Heavy metal ion presence in food poses a severe threat to human and ecological health. It is important to achieve rapid, sensitive and efficient detection of heavy metal ions. Two novel electrochemical sensing platforms based on Ni-MOF1/GCE and Cd-MOF2/GCE modified electrodes were developed for discriminative simultaneous detection of Cu²⁺ and Hg²⁺ in seaweed food matrices. Two sensors exhibit significantly enhanced electrochemical performance compared to conventional MOF-based sensors, featuring a three-dimensional Nano-network structure and abundant accessible active sites. Under optimized differential pulse anodic stripping voltammetry (DPV) conditions, two sensors exhibited rapid responses, wide linear ranges (20–180 μM for Cu²⁺, 7–180 μM for Hg²⁺) for both Cu²⁺ and Hg²⁺, with low limit of detection (LOD, 3.00 × 10⁻⁹ M for Cu²⁺, 2.50 × 10⁻⁹ M for Hg²⁺). Benefiting from the structural characteristics, two sensors show highly selective, sensitive, long-term stability under real sample testing. Applications in real seaweed food samples demonstrated high recovery rates and validated the sensor’s reliability. A possible mechanism involving the electrochemical sensing of Cu²⁺ and Hg²⁺ was proposed by integrating laviron’s adsorption theory. This work provides superior sensors, offering promising prospects for Cu²⁺ and Hg²⁺ monitoring in environmental and agricultural safety. Ni-MOF1/GCE and Cd-MOF2/GCE sensors are constructed as electrochemical sensors with excellent simultaneous ultrasensitive determination performance for trace multiple Cu 2+ and Hg 2+ in food samples. Download: Download high-res image (420KB) Download: Download full-size image
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Energy Materials
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2026
·Vol. 6
·期 8
·N
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IF 11.9
Jianfang Zhang\u003Csup\u003E1,2,\u003C\u002Fsup\u003E,Jiapei Li\u003Csup\u003E2,\u003C\u002Fsup\u003E,Yan Wang\u003Csup\u003E1,\u003C\u002Fsup\u003E,Miao Han\u003Csup\u003E1\u003C\u002Fsup\u003E,Chuhao Luan\u003Csup\u003E2\u003C\u002Fsup\u003E,Shuai Xia\u003Csup\u003E1\u003C\u002Fsup\u003E,Cuiping Yu\u003Csup\u003E1\u003C\u002Fsup\u003E,Yucheng Wu\u003Csup\u003E1,3,\u003C\u002Fsup\u003E,Wenjun Zhang\u003Csup\u003E2,\u003C\u002Fsup\u003E
The development of efficient and durable electrocatalysts for industrial-level water splitting remains a critical challenge. Here we report a CuO-MoS2/MoO3 precatalyst that undergoes electrochemical reconstruction under working conditions to yield two distinct active phases: Cu-MoS2 for the hydrogen evolution reaction (HER) at the cathode and an optimized CuO-MoS2/MoO3 for the oxygen evolution reaction (OER) at the anode. In 1.0 M KOH, the reconstructed electrodes deliver remarkably low overpotentials of 35 mV for HER and 124 mV for OER at 10 mA cm-2, along with outstanding long-term durability, sustaining 500 mA cm-2 for 100 h. Combined in situ Fourier-transform infrared spectroscopy and density functional theory calculations reveal that Cu species not only enhance charge transport but also tailor the electronic structure to optimize intermediate adsorption and reorganize interfacial water into a strongly hydrogen-bonded network, thereby accelerating water dissociation and proton transfer kinetics. When assembled into an anion-exchange-membrane water electrolyzer, the system delivers 1.0 A cm-2 at a low voltage of 1.77 V and 80 °C, with stable operation for 500 h, substantially surpassing noble-metal benchmarks. Our findings offer an efficient and durable catalyst system for sustainable hydrogen production, as well as fundamental insights into catalyst reconstruction and interfacial water regulation that inform the rational design of electrocatalytic materials.
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Small
·
2026
·
IF 11.8
Jiamin Qiu,Yu Liu,Zhenlong Liu,Jiajun Li,Siqi Geng,Jizhen Li,Guofang Zhang,Ziwei Gao
Combustion catalysts commonly improve the burning performance of composite solid propellants by lowering the thermal decomposition temperature of ammonium perchlorate (AP) and increasing AP heat release. However, heat release over a narrow temperature range is also critical for ignition response and regulation of the burning rate. To address this gap, we propose a concentrated heat release strategy for AP catalysis. This strategy is implemented using the Cu-BDC-NH 2 @TpPa heterostructure (Cu-BDC-NH 2 = copper 2-aminoterephthalate; TpPa is formed by Tp, 1,3,5-triformylphloroglucinol, and Pa, p-phenylenediamine). The TpPa layer regulates contact between AP and Cu active sites. DSC results show that Cu-BDC-NH 2 @TpPa-0.20 centers the main AP exothermic peak at 322°C and narrows the heat release range from 60°C for Cu-BDC-NH 2 to 12°C. Electrochemical measurements reveal lower electrochemical polarization and a more sensitive interfacial current response in the redox potential region. Condensed-phase in situ FTIR and TG-DSC-FTIR-MS analyses indicate that the TpPa interface modulates the local NH 4 + /ClO 4 − vibrational environment and gaseous product evolution. DFT calculations suggest that the thermally evolved CuO/C composite interface favors the adsorption and transformation of NH 3 -related intermediates while facilitating the desorption of NO and NO 2 products. This work provides an interface regulation strategy for combustion catalysis in energetic materials.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
·
IF 19.7
Xiaoxue Zhang,Ru Jia,Zhen-Feng Huang,Lun Pan,Chengxiang Shi,Xiangwen Zhang,Guidong Yang,Ji-Jun Zou
Ni-doped Cu nanowires catalyst enables Cu sites to activate NO and Ni sites to accelerate water dissociation to supply *H. • In situ tests confirm Ni doping reduces charge transfer resistance, accelerates the Volmer step, and increases *H coverage. • CuNi 10% NWs catalyst has industrial-scale current density (>1000 mA cm −2 ) and 90.35% NH 3 Faradaic efficiency in a flow cell. • CuNi 10% NWs catalyst achieves 82.47% NH 3 Faradaic efficiency in a membrane electrode assembly with excellent stability. The electrocatalytic nitric oxide reduction reaction (NORR) presents a promising method for simultaneously mitigating nitric oxide (NO) pollution and synthesizing ammonia (NH 3 ). However, its practical application is hindered by sluggish kinetics, primarily due to inefficient water dissociation, which results in an inadequate supply of active hydrogen (*H) and thereby limits the hydrogenation of nitrogen-containing intermediates. Herein, we present Ni-doped Cu nanowires as a high-performance electrocatalyst for the NORR. The optimized catalyst with a Ni/(Ni + Cu) molar ratio of 10% (CuNi 10% NWs) delivers an industrial-scale current density exceeding 1000 mA cm −2 in a flow cell, achieving an exceptional Faradaic efficiency (FE) of 90.35% and an NH 3 yield rate of 6.84 mmol h −1 cm −2 (17.28 mmol g cat −1 h −1 ) at −1.0 V vs. reversible hydrogen electrode. Furthermore, in a membrane electrode assembly, the CuNi 10% NWs achieved an NH 3 FE of 82.47% and an NH 3 yield rate of 4.44 mmol h −1 cm −2 (8.88 mmol g cat −1 h −1 ). Remarkably, in situ electrochemical impedance spectroscopy and Tafel slope analyses reveal that Ni doping reduces the interfacial charge transfer resistance of Cu nanowires, accelerates the rate-determining Volmer step of water dissociation, and facilitates the generation and adsorption of *H intermediates. This study opens a new pathway for the resource utilization of industrial waste gas NO and the direct synthesis of NH 3 . Download: Download high-res image (156KB) Download: Download full-size image Ni-doped Cu nanowires catalyst acts as a high-efficiency catalyst for electrocatalytic NO-to-NH 3 conversion, where Cu sites activate NO and Ni sites accelerate water dissociation to enrich active hydrogen species, thus achieving superior catalytic activity for NH 3 synthesis.
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Molecular Catalysis
·
2026
·
IF 4.3
Hanyue Xiao,Shasha Zhao,Kai Peng,Yaoyao Xu,Juan Li,Bodun Xie,Yao Si,Guowei Deng,Min Yang,Wei Li
In 1 M KOH, at 10 mA·cm⁻², the overpotential of HER is as low as 60.6 mV, and the Tafel slope is 90.07 mV·dec⁻¹. • At 100 mA·cm⁻², in 0.5 M H 2 SO 4 , the overpotential of OER is only 247.3 mV. After 300 h, the current density remains at 94.8%, and the voltage for overall water splitting is as low as 1.07 V. • CuRu@NF-AC exhibits excellent water splitting performance over the entire pH range, with the Faraday efficiencies of HER and OER reaching as high as 99.73% and 99.87%, respectively. In response to the energy crisis and environmental issues, to address the shortcomings of traditional electrocatalytic materials such as insufficient activity and poor stability, this study innovatively synthesized CuRu@NF-AC nanomaterials through an interface regulation strategy and systematically investigated their performance in electrocatalytic water splitting (hydrogen evolution reaction (HER) and oxygen evolution reaction (OER)) across the entire pH range. Experimental results demonstrate that this material achieves significant electrocatalytic activity through interface structure optimization. At a current density of 10 mA·cm −2 , the overpotentials for OER and HER in alkaline conditions were as low as 44.4 mV and 60.6 mV, respectively, with Tafel slopes of 30.14 mV·dec⁻¹ and 90.07 mV·dec⁻¹. In acidic conditions, the OER excess potential is only 49 mV and the overall water splitting voltage is as low as 1.07 V. In neutral (1.0 M PBS) electrolyte, the HER overpotential is 302.6 mV at 10 mA·cm −2 with a Tafel slope of 76.25 mV·dec⁻¹, exhibiting superior pH-universal adaptability. In addition, the catalyst exhibits excellent long-term stability, maintaining a stable electrocatalytic performance for >100 h. This study provides a new strategy for designing pH-universal hydrogen evolution electrocatalysts via interface regulation, with important theoretical and practical value. Download: Download high-res image (417KB) Download: Download full-size image
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Donghai Wu,Silu Li,Guanghua Lu,Hanyu Fang,Jun Hou
Co 0.5 /Cu 0.5 -Ti 3 C 2 Tₓ achieved excellent PMS activation and APAP removal. • A synergistic radical/non-radical mechanism governed the efficient degradation process. • Co/Cu diatomic synergy enhanced PMS adsorption, electron transfer, and mutual redox cycling. • APAP degradation pathways were elucidated, confirming effective detoxification. A central challenge in heterogeneous peroxymonosulfate (PMS) activation is achieving catalysts with highly active interfacial sites to enable both efficient pollutant degradation and environmentally safe water treatment. Herein, cooperative Co/Cu dual-atom sites were anchored on Ti 3 C 2 T x MXene (Co/Cu-Ti 3 C 2 T x ). The optimized Co 0.5 /Cu 0.5 -Ti 3 C 2 T x catalyst achieved 96.9% removal of the emerging contaminant acetaminophen (APAP) within 60 min via PMS activation, markedly outperforming its single-atom analogues by 21.0–58.6%. Response surface methodology (RSM) analysis indicated that the system operated efficiently under near-neutral pH and mild conditions. Quenching experiments and electron paramagnetic resonance (EPR) analysis suggested that APAP degradation proceeded via a coupled mechanism involving contributions from both reactive oxygen species (predominantly •OH, •O 2 − , and 1 O 2 ) and high-valent metal-oxo species (HVMOS). Density functional theory (DFT) calculations revealed that the synergistic interaction between Co/Cu sites enhanced PMS adsorption, improved electron transfer efficiency, and accelerated the redox cycles between Co 0 /Co 2+ and Cu + /Cu 2+ , thereby cooperatively promoting the activation of PMS. Based on the identification of intermediates, the degradation pathway of APAP was proposed to involve hydroxylation of the benzene ring, ring-opening, deacetylation, and ultimately oxidative degradation. The biotoxicity of the treated effluent decreased, confirming the effectiveness and environmental safety of the process. These findings advance the mechanistic understanding of bimetallic PMS activation and present a viable approach for the remediation of water containing refractory emerging contaminants. Download: Download high-res image (148KB) Download: Download full-size image
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危险品化学品经营许可证（带存储）