APPLIED SURFACE SCIENCE
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2026
·
IF 6.6
Zhipeng Pei,Jiacheng Li,Yitingyu Zhou,Yuhao Zhao,Wenxian Wei,Fei He,Gang Zhou
Cu@MoS 2 simultaneously enables NO 3 adsorption and *H supply. • Cu@MoS 2 -2 exhibits excellent structural stability and consistent catalytic performance. • Under light irradiation, Cu@MoS 2 -2 generates abundant high-energy hot electrons. • Cu@MoS 2 -2 achieves 94% FE and 0.526 mmol h −1 cm −2 NH 3 yield at − 0.5 V vs. RHE. Electrochemical nitrate (NO 3 − ) reduction (NO 3 RR) to ammonia (NH 3 ) is a sustainable strategy for converting nitrate-contaminated wastewater into valuable resources. However, the process involves a complex proton-coupled electron transfer (PCET) that requires eight electrons and nine protons. Herein, the localized surface plasmon resonance (LSPR) arising from Cu nanoparticles anchored on MoS 2 nanosheet arrays (Cu@MoS 2 ) is harnessed to regulate electron dynamics and enhance active hydrogen (*H) availability for NO 3 RR. Under simulated sun irradiation, the optimized Cu@MoS 2 heterostructure delivers a stable NH 3 evolution rate of 0.526 mmol h −1 cm −2 with a Faradaic efficiency (FE) of 94.0% at − 0.5 V, which is about 7.2 and 12 times higher than bare MoS 2 (0.073 mmol h −1 cm −2 ) and Cu (0.0438 mmol h −1 cm −2 ), respectively. This work demonstrates the capability of plasmonic cocatalysts to convert supplementary photon flux into multiple catalytic driving forces, opening a new avenue toward boosting catalytic activity through direct utilization of free solar energy. Download: Download high-res image (205KB) Download: Download full-size image
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Journal of Inorganic and Organometallic Polymers and Materials
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2026
·
IF 6
Wang Haixia,Sun Yilei,Liu Chuang,Meng Zeda D.,Oh Won-Chun
A series of graphene-modified copper–metal–organic framework composites (G-Cu-MOF-0.3, G-Cu-MOF-0.5, G-Cu-MOF-1) were fabricated via a solvothermal method. Structural characterizations verified that graphene was successfully composited without damaging the Cu-MOF crystalline framework, among the four materials, G-Cu-MOF-0.5 exhibits the largest specific surface area and pore size. Electrochemical results showed that G-Cu-MOF-0.5 displayed the best CO₂ electroreduction performance, with a current density of − 11 mA cm⁻², a double-layer capacitance (Cdl) of 4.97 mF cm⁻² and a Tafel slope value of 36.5 mV dec⁻¹. At − 1.5 V vs. RHE, the total Faradaic efficiency for CH₄ and CO reached 24% with stable operation over 12 h. Graphene modification significantly improves the conductivity, active site density, and structural stability of Cu-MOF, realizing efficient and controllable CO 2 conversion to C1 products. The hydrogen evolution reaction (HER) remains the dominant side reaction, and the Faradaic efficiency toward CH 4 is still moderate, leaving room for further selectivity optimization.This work provides a feasible strategy for designing MOF–carbon composites for electrocatalytic CO₂ reduction to methane.
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ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2026
·
IF 12.2
Leliang Wu,Dunyu Sun,Chenyu Yan,Longjiong Chen,Dequan Zhang,Chengdu Qi,Shaogui Yang,Huan He
Stable copper-ethylenediaminetetraacetic acid (Cu-EDTA) poses significant challenges for simultaneous ligand degradation and metal recovery. A self-driven ultraviolet/periodate (UV/PI) process that enables efficient decomplexation of Cu-EDTA coupled with in situ copper recovery was developed. This process achieved 94.50% decomplexation and 68.94% copper recovery via precipitation within 90 min without pH adjustment. Mechanistic investigations revealed that the UV/PI process generates reactive iodine species (IO3•) and singlet oxygen (1O2), and Cu(I)/Cu(II)/Cu(III) redox cycling, driving stepwise decarboxylation of EDTA and Cu2+ release. Consequently, proton consumption during PI activation and IO3– formation induces a gradual pH increase to ∼7.5, triggering the precipitation of released Cu2+. This intrinsic coupling of oxidative decomplexation and pH-driven precipitation enables a self-sustained pathway for simultaneous ligand removal and Cu recovery. While the electrical energy per order (EEO) is comparable to that of UV/H2O2, the UV/PI process exhibits markedly lower energy consumption per mass of copper recovered than other UV/oxidant processes. Moreover, the UV/PI process further exhibits strong resistance to water matrix interference, effective performance in real electroplating wastewater, and broad applicability toward various heavy metal complexes. This study provides a mechanistically informed and environmentally benign strategy for the treatment of metal-EDTA-containing wastewater.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2026
·
IF 6.7
Kai Liu,Yeming He,Jiaxin Wei,Feiyang Wen,Dongxia Zhang,Zemin He,Jianxin Guo,Zhiyuan Liang,Jianjing Gao
Controllable synthesis of rough-surfaced metal nanostructures remains a critical challenge in surface materials science, as surface roughness directly determines the plasmonic, catalytic and sensing properties of nanomaterials. Herein, we report a facile lattice mismatch-directed island growth strategy for fabricating roughened Ag-Cu heterostructured triangular nanoframes with naturally roughened surfaces, using Cu nanoplates as dual-functional sacrificial templates. The intrinsic lattice mismatch between face-centered cubic Ag and Cu drives the preferential island-like nucleation of Ag atoms on the high-energy edges of Cu nanoplates, avoiding the formation of a continuous epitaxial layer. This unique growth mode generates nanoframes with abundant surface defects and dense plasmonic hot spots, while the residual Cu induces spontaneous interfacial electron transfer to form an electron-rich Ag surface. The as-prepared nanoframes exhibit 13.5-fold higher SERS activity than smooth monometallic Ag nanoplates, and show excellent performance in both aqueous dispersion and solid substrate configurations. This work provides a general and scalable approach for regulating the surface microstructure of template-derived nanostructures through lattice mismatch engineering.
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CRYOGENICS
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2026
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IF 2.5
Changkun Wang,Zuhua Chen,Jun Shen,Yong-Chang Lau,Heng Tu,Changmin Xiong
Single crystals of Ce 2 X 3 (NO 3 ) 12 ·24H 2 O (X=Cu, Co, CXN) were successfully synthesized, all crystallizing in the trigonal space group R ¯ 3 . Under a magnetic field variation of 0-9 T at 2 K, Ce 2 Cu 3 (NO 3 ) 12 ·24H 2 O and Ce 2 Co 3 (NO 3 ) 12 ·24H 2 O exhibit large magnetic entropy changes of 15.18 J·kg -1 ·K -1 and 16.19 J·kg -1 ·K -1 , respectively. Notably, the magnetic entropy changes of these novel crystals significantly exceed that of Ce 2 Mg 3 (NO 3 ) 12 ·24H 2 O (CMN), which is only 6.33 J·kg -1 ·K -1 under identical conditions. Meanwhile, the refrigerant capacity (RC), constrained-range equivalent refrigerant capacity product (RCP) and temperature-averaged entropy change (TEC) of CXN are also comprehensively superior to those of CMN. These performances suggest that CXN are promising candidates for ultra-low temperature magnetic refrigeration applications.
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ELECTROANALYSIS
·
2026
·Vol. 38
·期 7
·e70190
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IF 2.6
Hao Liang,Xuening Jin,Hebing Pei,Zunli Mo
The enantioselective recognition of biomolecules such as amino acids has significant value in medicine, life sciences, agriculture, and other fields. In this study, a novel electrochemical chiral sensor, CS@Cu-β-CD/GCE, was successfully prepared by self-assembling Cu 2+ modified β-cyclodextrin (β-CD) with chitosan (CS) and coating it onto a glassy carbon electrode (GCE). This method effectively addresses the agglomeration issues associated with CS while significantly enhancing the conductive properties of the material and increasing the number of chiral recognition sites. Experimental testing and structural analysis revealed that differentiated hydrogen bonding provides the driving force for molecular binding, while the confinement of the Cu-β-CD cavity and steric hindrance enable structure selection. At optimized testing conditions (30 s incubation, 25°C, pH = 6.0, 5.0 mM), it exhibited the peak current ratio (I D /I L ) of up to 2.25 for phenylalanine (Phe) isomers, outperforming most previously reported electrochemical sensors. Meanwhile, the CS@Cu-β-CD/GCE exhibits excellent stability (98.6% signal retention after 16 days of storage at 5°C), high enantiomeric selectivity for Phe, and good resistance to interference, can be developed for distinguishing racemic phenylalanine. This strategy provides a simple and efficient approach for electrochemical chiral identification of Phe enantiomers and holds wide-ranging application prospects in chiral sensing and drug analysis.
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ChemCatChem
·
2026
·Vol. 18
·期 3
·e01581
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IF 3.9
Wuyang Xiao,Fuhe Le,Rui Sheng,Xue Yang,Xueying Cao,Wei Jia
Perovskites with tunable compositions and structures are desirable electrocatalysts for water electrolysis. However, achieving efficient hydrogen evolution reaction (HER) in alkaline media using perovskite-based catalysts remains a significant challenge. Herein, a Cu-doped La 0.5 Ba 0.5 CoO 3–δ perovskite was synthesized via a sol-gel method, which exhibits enhanced HER electrocatalytic activity through the construction of dual active sites. X-ray photoelectron spectroscopy (XPS) and x-ray absorption fine structure (XAFS) analyses reveal that Cu doping simultaneously induces the oxidation of Co and the formation of oxygen vacancies, establishing a synergistic charge compensation between the dual active sites. Specifically, oxygen vacancies promote water dissociation by enhancing adsorption, while high-valence Co species reduce charge transfer resistance, thereby facilitating electron transfer during HER. As a result, the optimized La 0.5 Ba 0.5 Co 0.8 Cu 0.2 O 3–δ (LBCC 0.2 ) achieves low overpotentials of 160 mV and 228 mV at current densities of 10 and 100 mA·cm −2 , respectively. Moreover, the catalyst demonstrates outstanding stability, maintaining 200 h for HER operation, outperforming commercial Pt/C. This study highlights the advantage of dual active sites in boosting the intrinsic electrochemical activity and underscores the potential of Cu-doped perovskites for efficient hydrogen production. Graphical A Cu-doped La 0.5 Ba 0.5 CoO 3-δ perovskite (LBCC 0.2 ) was synthesized using a sol–gel method for alkaline hydrogen evolution reaction (HER). The resulting dual active sites, comprising Co species and oxygen vacancies, collectively enhance the electrical conductivity and accelerate HER kinetics of LBCC 0.2 . This leads to a low overpotential of 160 mV at a current density of 10 mA·cm −2 and an excellent stability over 200 h.
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ACS Catalysis
·
2026
·
IF 13.6
Xianglong Meng,Yanjiao Wang,Ruiping Deng,Soryong Chae,Chunzheng Wang,Girolamo Giordano,Zifeng Yan,Hailing Guo,Svetlana Mintova
A strategy for synthesizing bimetallic catalysts confined within zeolite frameworks, offering a promising approach for stabilizing metal species under harsh reaction conditions, is disclosed. A dual-stage synthesis strategy including alkali etching to open the channels of Silicalite-1 (S-1) zeolite, exposing internal hydroxyl defects that serve as anchoring sites for Cu and Zn species, is presented. This was followed by a dry-gel conversion encapsulation step to yield Cu-ZnO@S-1 catalyst. The competitive occupation of these sites by Cu and Zn facilitates the formation of high-density Cu-ZnO interfaces. Under reaction conditions of 3 MPa and 250 °C, the catalyst achieves a methanol selectivity above 99.2% and a space-time yield (STY) of 2.1 g gCu–1 h–1, nearly four times higher than that of copper-containing catalyst (Cu@S-1, 0.54 g gCu–1 h–1) and significantly outperforming the sample prepared by conventional impregnation (Cu-ZnO/S-1, 1.6 g gCu–1 h–1). The oxygen-deficient Cu-ZnO1–x sites at the Cu-ZnO interface are further demonstrated to serve as genuine active centers for methanol synthesis. The methanol formation reaction proceeds via the formate pathway, and the high density of Cu-ZnO1–x sites effectively lowers the activation barrier for the hydrogenation of *HCOO to *H2COO.
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FOOD CHEMISTRY
·
2026
·
IF 10.4
Jiajie Xu,Yuhang Huang,Jiayu Xu,Siyu Hu,Xiangyang Tan,Liangchong Yu,Taolei Sun,Guanbin Gao
Glucose oxidase (GOx) is unstable under temperature/pH variations, limiting its biosensing applications. Existing nanozyme-based glucose sensors suffer from narrow detection ranges (0.2–12.0 mM) and poor stability. Herin a Janus-structured GOx-Fe/Cu nanozyme was synthesized via one-pot self-assembly with Fe₁₋ₓS and GOx partially-covered on Cu₃(PO₄)₂ nanoflowers. This nanozyme achieved an ultra-broad glucose detection range (0.5–20 mM, LOD = 34.18 μM), 40 times wider than existing nanozyme, with enhanced stability (>80% activity after 7 h at pH 3 and 5 h at 60 °C) and high specificity. When integrated into a chitosan/agarose hydrogel, it enabled visual glucose quantification through smartphone-based portable detection. In milk samples, it showed reliable glucose and H₂O₂ detection with recovery rates of 95–121% and relative standard deviations (RSD) of 0.31%–8.26%, demonstrating practical applicability. This Janus-structured GOx-Fe/Cu nanozyme improves GOx stability and sensing performance, and the hydrogel platform enables portable detection of glucose and hydrogen peroxide in food chemistry.
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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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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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