WATER AIR AND SOIL POLLUTION
·
2026
·Vol. 237
·期 11
·676
·
IF 3.5
Deng Feng,Zhang Lu,He Yuqi,Wang Yun
Iron-copper/carbon aerogel (Fe–Cu/CA) electrodes were prepared via N₂ carbonization and CO₂ high-temperature activation. Structural characterization indicated that CO₂ activation significantly increased the cathode’s porosity and specific surface area, enhancing the exposure of catalytic active sites. The CO₂-activated Fe–Cu/CA electrodes were used as cathodes in an electro-Fenton (EF) system for treating chemical oxygen demand (COD) and adsorbable organic halide (AOX) in actual printing and dyeing wastewater (PDW). The results showed effective COD removal over a wide pH range (3–8); under optimal conditions (pH = 3, current density 7 mA/cm 2 , aeration rate 0.5 L/min), the COD and AOX removal rates reached 73.0% and 65.5% respectively after 60 min, with a maximum H₂O₂ concentration of 32 mg/L. Fe and Cu served as efficient Fenton catalysts to promote COD degradation. Additionally, the cathode exhibited good catalytic stability, with COD removal rate slightly decreasing from 73.0% to 69.1% after five reuse cycles. This material provides a feasible approach for actual PDW treatment by EF process.
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高影响因子
CATALYSIS TODAY
·
2026
·
IF 5.1
Yao Nian,Tiantong Zhang,Linfeng Li,Xinyuan Wang,Dingqiang Feng,Jinli Zhang,You Han
The industrial hydrochlorination of acetylene to vinyl chloride monomer (VCM) remains constrained by the indispensable yet environmentally hazardous mercury chloride catalyst. To date, the exceptional activity and long‑term stability of mercury‑based systems have hindered their replacement. Inspired by the performance of mercury-based catalysts, we rationally engineered an environmentally benign and cost‑effective copper‑based alternative. Compared to copper species, the weaker intermolecular interactions and appropriate activation ability of acetylene towards mercury-based catalysts underpin the superior activity and stability. To mimic these traits, coordinating ligands are applied to tune the geometry and electronic structure of copper sites, resulting in increasing the reaction order of acetylene and augmenting the number of accessible active sites. After reaching a plateau in ligand‑mediated strategy, dispersed copper species are achieved by utilizing a defect support to inhibit the aggregation. The designed copper catalyst achieves the deactivation rate of 0.018 % per hour in a 400-hour stability test, which is comparable to the performance of mercury-based catalysts. This work provides a general principle for balancing site dispersion, electronic modulation and support engineering for designing an effective catalyst.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·123544
·
IF 7.5
Zihao Wei,Yulin Qin,Mengbo Zou,Lin Jia,Haorun Li,Yuekun Zhang,Jinyu Wang,Zeyu Guo,Hao Wu,Zeyu Zhang,Shanghong Zeng
The rational surface regulation of Cu electrocatalysts through doping foreign components has emerged as a feasible pathway in electrochemical CO 2 reduction reaction. Herein, the catalysts comprising the Cu 0 -Sm 3+ -Cu + sites are reported to explore the doping-driven the alteration of surface structure and properties. The incorporation of Sm with oxygen affinity in Cu 2 O/Cu decreases the crystallite sizes and evokes lattice expansion of Cu 2 O and Cu to generate surface defects. The interaction of Cu 0 , Sm 3+ and Cu + promotes dual-carbon production by stabilizing Cu + and enhancing *CO coverage and water dissociation. Our findings therefore reveal the role of Sm in promoting beneficial changes of Cu-based electrocatalysts.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Huayuying Peng,Fei Liu,Shangyan Zhou,Xinyi Ran,Xiaodan Wang,Mengqing Yao
Metal promotion is a common strategy to improve the hydrogenation activity of oxide catalysts. However, its efficacy is frequently hindered by insufficient hydrogen supply to active sites and the tendency of metal dopants to sinter under high-temperature conditions. Herein, we design a Cu-MXene/ZnZrO x composite catalyst, in which Ti vacancies within the MXene framework anchor Cu, enabling efficient hydrogen activation and subsequent spillover to ZnZrO x . In comparison with the conventional Cu/ZnZrO x catalyst, the Cu-MXene/ZnZrO x structure not only enhances the resistance of Cu species to high-temperature sintering but also significantly promotes the kinetics of hydrogen transfer. Additionally, this structural design facilitates the generation of a higher density of oxygen vacancies (OVs). As expected, the Cu-MXene/ZnZrO x catalyst demonstrates outstanding performance, achieving 12.3% CO 2 conversion and 91.2% methanol selectivity—exceeding all previously reported ZnZrO x -based systems. Density functional theory (DFT) calculations and Diffused reflectance infrared fourier transform spectroscopy (DRIFTS) indicate that atomically dispersed Cu sites facilitate H 2 dissociation, while the Cu-MXene interface promotes rapid H spillover to neighboring Zn-Zr sites, enhancing electron transfer and CO 2 reduction kinetics, thereby forming abundant active intermediates of HCOO* and CH 3 O*. This study offers a robust and scalable approach for developing highly efficient catalysts for CO 2 -to-methanol conversion.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Zihao Zhou,Rui Qin,Tingjie Mao,Pinlin Wang,Zhongliang Huang,Ting-shan Chan,Yu-cheng Huang,Zhiwei Hu,Xiaoqing Huang,Nanjun Chen,Yunhua Li
A unique Ru/Cu@CN featuring Cu single atoms-spurred Ru clusters on a N-modified carbon support was synthesized. • The hydrogen evolution reaction performance of Ru/Cu@CN was precisely regulated via Cu single-atom electronic networks. • The Ru/Cu@CN-based AEMWE achieves a high current density of 5.4 A cm −2 @2.0 V in 1 M KOH@80 °C. • The Ru/Cu@CN-based AEMWE operates stably at 2 A cm −2 for over 600 h without a significant voltage decay. Developing cost-effective, highly efficient, and durable hydrogen evolution reaction (HER) catalysts is critical for the commercialization of anion exchange membrane water electrolysis (AEMWE). However, this remains a significant challenge due to the over-reliance on platinum-based catalysts, especially when operating at ampere-level current densities. Here, we present a Cu electron-networking strategy to create Cu single atom-stabilized Ru clusters on an N-modified carbon support (Ru/Cu@CN), in which bridged Cu sites can efficiently stabilize Ru clusters and promote uniform dispersion of high-density Ru through strong metal-support interactions while weakening the overly strong Ru H bond via Ru Cu electron transfer, thereby substantially enhancing the HER activity and stability of Ru/Cu@CN. As a result, the Ru/Cu@CN-based AEMWE achieves exceptional current densities of 5.4 A cm −2 at 2.0 V and 3 A cm −2 at 1.79 V in 1 M KOH with a low Ru loading of 0.3 mg cm −2 , fulfilling the US Department of Energy (DOE) 2025 target (3 A cm −2 at <1.8 V) and competing favorably with the state of the art. Moreover, we demonstrate that the Ru/Cu@CN-based AEMWE can be operated at a high current density of 2 A cm −2 for over 600 h without a significant cell voltage decay Ru/Cu@CN thus represents a promising HER catalyst for practical AEMWE applications.
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KOREAN JOURNAL OF CHEMICAL ENGINEERING
·
2026
·
IF 3.4
Jiang Pengfei,Hao Yifan,Jia Mingxi,Liu Cun
Hydrogen peroxide (H 2 O 2 ) is a key reactive oxygen species involved in physiological regulation and pathological processes, and its accurate quantification is essential for bioanalysis and disease-related studies. Herein, we report the synthesis of a series of Cu-Fe oxide nanozymes via a simple antisolvent crystallization strategy and systematically investigate their peroxidase-like catalytic activity toward colorimetric H 2 O 2 detection. By tuning the Cu/Fe molar ratio, the catalytic activity of the nanozymes can be effectively regulated, with Cu 2 FeO x exhibiting the highest peroxidase-like activity toward 3,3′,5,5′-tetramethylbenzidine (TMB) oxidation in the presence of H 2 O 2 under acidic conditions and enabling sensitive colorimetric detection of H 2 O 2 over a linear range of 10–200 µM with a detection limit of 0.572 µM. Furthermore, the proposed sensing platform demonstrates satisfactory selectivity and reproducibility, and is successfully applied to the determination of H 2 O 2 released into cell culture supernatants after chemical stimulation. This work highlights the potential of composition‑regulated Cu-Fe oxide nanozymes as robust artificial enzymes for colorimetric H 2 O 2 sensing and provides insights into their application in bioanalytical systems.
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高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Hanlin Wang,Xianglin Chen,Yafei Guo,Pu Huang,Antian Wang,Jingyi Shi,Huaxiang Gao,Ruilin Wang,Chuanwen Zhao
Electrochemical CO 2 reduction to syngas driven by renewable energy offers a sustainable alternative to conventional fossil-fuel-based processes, while maintaining a stable H 2 /CO ratio under the inherently fluctuating potentials remains a substantial challenge. In this study, a series of supported Zn catalysts are fabricated by electrodepositing Zn onto Cu foil substrates, with a systematic investigation into the effects of deposition current density (−5 to −20 mA/cm 2 ) and deposition time (10 to 20 min) on catalyst structure and performance. Characterization results reveal that, with increasing deposition parameters, Zn species evolve from discrete nanoplates into an interwoven network of wrinkled structures, accompanied by decreased work function and charge transfer resistance. The synthesized catalysts exhibit a favorable balance in activity toward the electrochemical CO 2 reduction reaction (eCO 2 RR) and hydrogen evolution reaction (HER), thereby enabling highly tunable syngas production with H 2 /CO ratios ranging from 0.5 to 5.4. Notably, the Cu-Zn catalysts demonstrate remarkable stability in syngas composition, maintaining a nearly constant H 2 /CO ratio across a wide potential window of −1.11 to −1.41 V vs. reversible hydrogen electrode (RHE). Furthermore, the Cu-Zn-10–10 catalyst exhibits excellent durability under fluctuating voltage conditions over 24 h, highlighting its potential for seamless integration with intermittent green electricity. In-situ attenuated total reflection surface-enhanced infrared absorption spectroscopy (ATR-SEIRAS) and density functional theory (DFT) calculations indicate that the Cu-Zn bimetallic sites moderately enhance *CO adsorption, inhibiting its rapid desorption. Moreover, the energy barriers of eCO 2 RR and HER show little variation with potential, which collectively ensure the stability of the H 2 /CO ratio within the range of −1.11 to −1.41 V vs. RHE.
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Advanced Healthcare Materials
·
2026
·
IF 11
Ming Cheng,Jie Wu,Liru Heng,Yan Liu,Jinyu Yao,Tongtong Zhu,Yongming Zhu,Qiannan You,Zhubing Lei,Tong Wu,Wenfei Dong,Juan Yue,Yuanyuan Qin,Li Li
Glioblastoma (GBM) remains one of the most lethal intracranial malignancies due to its diffuse invasiveness and inevitable recurrence. Sonodynamic therapy (SDT) offers a noninvasive strategy for deep-tissue tumor ablation; however, its efficacy is often limited by rapid electron–hole recombination in conventional sonosensitizers, resulting in insufficient reactive oxygen species (ROS). In this study, a biomimetic nanosonosensitizer is rationally engineered via synergistic type II heterojunction interface construction and Cu─N coordination electronic activation. By anchoring Cu─N coordinated carbon dots (Cu-CDs) onto two-dimensional (2D) nanosheets, the compact heterojunction enables spatial charge separation, while Cu─N motifs act as kinetic promoters to accelerate interfacial electron transfer. This co-engineering strategy markedly enhances ultrasound (US) -triggered multi-ROS generation, leading to amplified oxidative stress. Biologically, intracellular copper overload triggers cuproptosis via lipoylated protein aggregation, whereas ROS burst induces PANoptosis-like cell death. Importantly, the synergistic death programs promote robust immunogenic cell death (ICD) with elevated Damage-associated molecular patterns (DAMPs) release/exposur, thereby activating antitumor immunity and contributing to enhanced therapeutic efficacy against GBM. This work provides new insights into the rational design of highly efficient sonosensitizers and offers new dimensions for precision SDT-based glioma sono-immunotherapy.
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PubMed
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2026
·
IF 4.8
Xiaoyang Xu,Yong Zhang,Qiliang Wu,Fenghai Cao,Hua Yang,Diwen Zhou,Yang Chen,Thachapan Atchimarungsri,Lizhi Wu,Chen Yang,Sen Wang,Li Tan
Two Cu/Mo 2 C catalysts with different interfacial structures are synthesized to reveal how synthesis routes control CO 2 hydrogenation selectivity. • 5Cu/Mo 2 C‑IWI achieves 85.7% methanol selectivity and STY of 53.7 mg MeOH ·g cat −1 ·h −1 , outperforming its doped counterpart that predominantly yields CO and CH 4 . • Moderate metal‑support interaction over catalyst stabilizes Cu δ+ /Mo 6+ for CO 2 conversion to methanol. • In situ DRIFTS verified catalysts follow dual formate-carboxylate pathway, and Cu/Mo 2 C interfacial structure regulates intermediates evolution to determine final product distribution. The conversion of carbon dioxide (CO 2 ) into methanol using renewable energy has dual energy and environmental significance. Molybdenum carbide (Mo 2 C) exhibits excellent CO 2 activation ability and thermal stability, but it is still difficult to achieve high methanol selectivity for catalysts supported on it, and the structure-activity relationship between interface structure and selectivity is still unclear. Here, Cu/Mo 2 C-IWI and Cu@Mo 2 C catalysts were fabricated via incipient wetness impregnation and in situ doping strategies, respectively, to investigate the effect of different Cu/Mo 2 C interfaces on product selectivity. Among them, Cu/Mo 2 C-IWI exhibited high methanol selectivity of 85.7% with a space-time yield of 53.7 mg MeOH ·g cat −1 ·h −1 (230 ℃, 3 MPa), whereas Cu@Mo 2 C predominantly produced CH 4 and CO. Combined X-ray photoelectron spectroscopy and Auger electron spectroscopy results revealed that moderate metal-support interactions in Cu/Mo 2 C-IWI stabilized the higher valence states of Cu δ+ and Mo 6+ species, which are critical for stabilizing formate (HCOO*) and carboxylate (*COOH) intermediates. In contrast, abundant Mo 2+ species and rich oxygen vacancies on Cu@Mo 2 C facilitated the cleavage of C–O bonds, thus promoting CO and CH 4 formation. In situ diffuse reflectance infrared spectroscopy ( in situ DRIFTS) verified that both catalysts follow a dual-path reaction mechanism involving formate and carboxylate intermediates, and interfacial structure dominates the evolution of reaction intermediates and final product distribution. This study establishes a clear correlation among synthesis strategy, interfacial structure and catalytic selectivity, and demonstrates that constructing surface Cu/Mo 2 C interfaces serves as a rational design principle for highly selective hydrogenation of CO 2 to methanol. Download: Download high-res image (210KB) Download: Download full-size image
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ACS Applied Energy Materials
·
2026
·
IF 5.5
Wenjie Gu,Lin Chen,Zejian Li,Zhiwen Xu,Yuxin Ge,Yongqi Mao,Xinyuan Song,Jiajin Li,Pengxuan Wu,Junwei Liao,Minglei Lu,Tiejun Wang
Hydrogen, with its zero-carbon nature, represents an ideal sustainable secondary energy alternative. Despite its promise for the hydrogen economy, the aqueous-phase reforming of methanol (APRM) continues to face the primary challenge of developing efficient and stable catalysts. Herein, we present a Cu-Glu/Al2O3–ZnO catalyst and investigate its structure-performance relationship through various characterization techniques. A unique core–shell structured catalyst is constructed, consisting of carbon-encapsulated nanoparticles (8.6 nm) that are evenly dispersed on an Al2O3–ZnO support. The catalyst exhibits outstanding activity at 210 °C, with a hydrogen production rate of 51.8 μmol/gcat/s, H2 selectivity of 99.95%, and CO selectivity of 0.05%. Furthermore, it demonstrates excellent durability, with no significant deactivation observed over six consecutive reaction cycles under hydrothermal conditions. In situ DRIFTS and characterization reveal that Cu species catalyze both methanol dehydrogenation (*CH3OH → *CH3O → *CH2O → *HCOOH) and water dissociation (*H2O → *H + *OH), which collectively promote efficient H2 production in APRM.
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CHEMICAL ENGINEERING & TECHNOLOGY
·
2026
·Vol. 49
·期 4
·e70205
·
IF 2
Yu-Qing Li,Yuwei Wang,Fei Wang,Hong Chen,Shenghao Yang,Lihong Zhao,Xu Liang,Yuanli Jiang,Feidong Xie,Liutao Hou,Zhenfeng Liu,Jiantang Sun
A structured, chloride-free Pd–Cu/NaY catalyst was developed for the direct synthesis of dimethyl carbonate (DMC) from syngas-derived methyl nitrite and CO. The NaY zeolite support stabilizes Pd(II) species via strong electrostatic interactions, while Cu addition enhances durability by suppressing Pd reduction and aggregation, as confirmed by H 2 -TPR and TEM. Using shaped spherical supports improves DMC selectivity by limiting methyl nitrite decomposition side reactions through diffusion constraints. Under optimized conditions (CO/MN = 1/6, 120°C), the catalyst achieves a DMC space-time yield of 669 g·kg −1 ·h −1 with high selectivity. A 1000 h stability test shows sustained activity above 550 g·kg −1 ·h −1 after an initial run-in period. In situ DRIFTS studies identify the ligand exchange step as rate-determining and elucidate the full reaction pathway. This robust catalytic system demonstrates strong potential for pilot-scale and industrial syngas-to-DMC processes.
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高影响因子
Catalysts
·
2026
·Vol. 16
·期 4
·289
·
IF 4.5
Yewei Zhang,Haibin Huang,Chen Chen,Chenyang Wang,Heyuan Liu
Synchronously enhancing the light response range and electron–hole separation efficiency is essential to improve photocatalytic activity. Herein, we synthesized a Cu-doped ZnIn2S4(ZIS) catalyst with S-vacancy (Cun-VZIS) via hydrothermal synthesis, incorporating sulfur vacancies and directionally substituting copper ions for zinc ions. The experimental results elucidate the synergistically photocatalytic mechanism associated with the two types of defects. Both the sulfur vacancies within the structure and the copper doping sites lead to a reduction in the size of the ZnIn2S4unit cell. The sulfur vacancy traps electrons, thereby mitigating the recombination of photogenerated carriers. Meanwhile, the copper ions optimize the carrier migration pathways, enhancing the overall carrier separation efficiency. Consequently, Cu1.5-VZIS demonstrates a stable and markedly enhanced photocatalytic hydrogen production activity, achieving a performance that is 7.5 times greater than that of pristine ZIS. Our study elucidates the effect of vacancy defects and ion doping on the photogenerated charge dynamics in ZIS, and paves a novel pathway for optimizing carrier dynamics through the concurrent utilization of both types of defects.
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