COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Xiudong Zhu,Wei Guo,Zhang Wei,Zhe Sheng,Xiongchao Lin,Deping Xu,Yonggang Wang
M 3+ controls phase evolution: Al/Ga form Cu-Co alloy; In 3+ leads to CuIn, CoIn 2 , In 2 O 3 separation. • Surface hydroxyls and bridged CO provide dual CHₓ sources for C 2+ OH formation. • Medium-strength basic sites and Cu + fraction, not total basicity, govern C 2+ OH selectivity. • Smaller M 3+ radius (Al 3+ ) strengthens metal-support interaction, enhancing dispersion and performance. The modulation of trivalent cations in layered double hydroxide (LDH)-derived catalysts provides an effective strategy for tuning the multifunctional active sites for higher alcohol synthesis. In this study, a series of layered CuCoM catalysts (M = Al, Ga, In) was synthesized via alkaline co-precipitation and evaluated for higher alcohols synthesis via CO hydrogenation. The results demonstrate that the introduction of M 3 + is essential for constructing the LDH precursor structure and significantly influences the phase evolution, morphology, textural properties, reducibility, surface basicity, and chemical states of the catalysts. Among the catalysts tested, CuCoAl exhibited the best overall performance, achieving a CO conversion of 35.60%, an ethanol selectivity of 39.97%, and a C 2 + alcohols selectivity of 73.47%. Structural characterization revealed that CuCoAl had the highest specific surface area and the most uniform dispersion of Cu and Co species, which favored the exposure of accessible active sites. CO 2 -TPD, XPS, and in situ DRIFTS results further indicated that CuCoAl contained abundant surface hydroxyl groups and a higher fraction of Cu + , which promoted the formation of formate species, facilitated non-dissociative CO insertion, and enhanced CH x generation through both formate hydrogenation and bridged CO dissociation on Co sites. The superior catalytic performance of CuCoAl is thus attributed to the synergistic effect of highly dispersed Cu-Co active sites, abundant surface hydroxyl groups, and optimized Cu + /Co interfacial functionalities. This study provides mechanistic insights into trivalent-cation regulation in LDH-derived CuCo catalysts and offers a rational strategy for the design of efficient catalysts for higher alcohol synthesis from syngas. Download: Download high-res image (174KB) Download: Download full-size image
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Zhimo Fang,Zhou Zhou,Xiaomeng Li,Dongyang Li,Bin Hu,Haoyu Wang,Lin Zhang,Qin Dai,Kai Li,Yao Kong,Shiguan Yang,Qiang Lu
Superexchange-mediated dual-acceptor sites enable spatial charge separation. • Synergistic single-atom and vacancy engineering creates multifunctional sites. • Cu SA -TO-O V delivered excellent corresponding turnover frequencies of 177.52 h −1 . • The photo-Fenton system exhibited wide pH adaptability and anti-interference. Synchronously and efficiently utilizing photogenerated electrons and holes remains a significant challenge in Fenton-like reaction. Herein, the Cu single-atom (Cu SA ) and oxygen vacancy (O V ) co-modified TiO 2 nanoflake-like catalyst is successfully synthesized. O V modulate the electronic coupling interaction, which is proposed to trigger superexchange -mediated electron transfer from Cu 3 d x 2 − y 2 to Ti 3 d xy via O 2 p y orbitals. Specifically, Cu SA serves as the hole-accepting site for 1 O 2 generation, while O V and Ti 3+ functions as the electron-accepting site for •OH production and contaminant adsorption. The substrate enrichment effect and the free radical/non-radical coupling interaction significantly enhances photo-Fenton catalytic performance, achieving superior sulfanilamide removal efficiency across a broad pH range (3–11) and a high turnover frequency of of 177.52 h −1 . This work not only highlights the potential of active site engineering in designing photo-Fenton catalysts but also advances the development of efficient and sustainable water purification solutions.
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高影响因子
COMPOSITES PART B-ENGINEERING
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2026
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IF 14
Haizhu Li,Fuyang Sun,Dinghua Hu,Changrui Wang,Qiang Li,Xuemei Chen
The heat dissipation bottleneck induced by the high-power density of electronic devices is a core challenge that limits their operational stability and long-term reliability. Herein, diamond-Cu and diamond-Al composites (DCC and DAC) were systematically investigated with respect to material preparation, performance characterization, and reliability under extreme environments. X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy analyses indicate the presence of W-derived carbide-containing interfacial regions and close contact between the diamond particles and the Cu and Al matrices. Among the investigated particle-size distributions and diamond volume fractions, maximum thermal conductivities of 793.9 and 775.8 W m −1 K −1 were obtained for the DCC and DAC, respectively, while the DCC exhibited a maximum flexural strength of 405 MPa. The DCC underwent interfacial electrochemical corrosion in an acidic salt spray environment with a pH of 3.5, resulting in a maximum degradation of thermal conductivity of 26.8%. A gold-nickel protective coating with a thickness of at least 3 μm effectively suppressed micro-galvanic corrosion and significantly enhanced the corrosion resistance of both DCC and DAC. Furthermore, the composites exhibited excellent structural and thermal stability under high/low temperature, damp heat, and vibration conditions. Infrared thermal imaging tests verified their excellent heat dissipation performance. At 16.7 W cm −2 , the DCC and DAC reduced the heat-source temperature by 88.1 and 66.9 K, respectively, relative to 70Si/Al, with thermal stabilization reached within approximately 300 s. The developed composites demonstrated stable thermal performance under the prescribed laboratory environmental and mechanical loading conditions, indicating their potential for high-reliability electronic thermal-management applications.
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CHINESE JOURNAL OF CATALYSIS
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2026
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IF 17.2
Bin Yang,Ouardia Akdim,Chengcheng Yuan,Ruina Li,Luo Yu,Hermenegildo García,Jiaguo Yu,Graham J. Hutchings,Panyong Kuang
The electroreduction of CO 2 to CO is fundamentally hindered by sluggish COOH intermediate formation and the competing hydrogen evolution reaction. Herein, we show that this challenge can be addressed through the dynamic in-situ reconstruction of a CuO/In 2 O 3 precursor under electrochemical CO 2 reduction conditions. By employing in-situ electrochemical spectroscopy techniques in combination with theoretical calculations, we demonstrate that the presence of In 2 O 3 facilitates the complete reduction of CuO to metallic Cu. This in-situ reconstruction produces electron-rich Cu-In 2 O 3 interfaces, characterized by a reduced work function and an upshifted Cu 3 d -band center, which promote CO 2 activation and the formation of COOH/CO intermediates. Those interfacial properties lead to a pronounced electronic coupling that endows the electrocatalyst with high CO 2 -to-CO selectivity at low potentials. Specifically, the optimised Cu/In 2 O 3 achieves CO Faradaic efficiency above 90% across −0.5 to −0.9 V vs. the reversible hydrogen electrode, reaching 97.6% at −0.6 V in a H-type cell, and sustains a high CO selectivity of 96.0% even at an ultralow potential of −0.2 V in a flow-cell configuration. These findings underscore the crucial role of electron-rich interfaces in directing CO 2 reduction with exceptional selectivity and activity toward CO formation.
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高影响因子
ACS Applied Materials & Interfaces
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2026
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IF 7.8
Simin Zhang,Suiting Ning,Xinran Hu,Zhangheng Lai,Wenzeng Zhao,Hailin Liu,Yichu Wu,Zhiquan Chen
As a mid-temperature thermoelectric material, CuGaTe2 features a distinctive crystal structure, environmentally friendly and high tunability, all of which contribute to its promising thermoelectric performance. However, due to its intrinsically low electrical conductivity and high lattice thermal conductivity, the thermoelectric performance of pristine CuGaTe2 is unsatisfactory. In this work, Cu-deficient Cu0.96GaTe2 was alloyed with different contents of AgSbTe2 via a combined approach involving melting, ball milling, and spark plasma sintering. The Cu-poor condition introduces Cu vacancies, thereby providing more hole carriers. AgSbTe2 alloying leads to a further increase in the carrier concentration. Despite of the decrease in carrier mobility, the electrical conductivity was evidently enhanced. On the other hand, Sb doping increases the density of states at the Fermi level, leading to enhancement of the Seebeck coefficient. Moreover, Cu vacancies and AgSbTe2 alloying both cause a significant decrease in sound velocity, thereby decreasing the lattice thermal conductivity to an ultralow value of 0.29 W m–1 K–1 at 743 K. Finally, the optimized (Cu0.96GaTe2)0.9(AgSbTe2)0.1 sample demonstrates the highest thermoelectric performance, achieving an average zT of 0.41, which represents a 215.4% improvement over pristine CuGaTe2. Its peak zT reaches 1.39 at 743 K, corresponding to a 124.2% improvement relative to pristine CuGaTe2.
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PubMed
高影响因子
MICROCHEMICAL JOURNAL
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2026
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IF 5.2
Dali Wei,Zhejie Chen,Xuezhu Wang,Zhou Fang,Qianru Li,Junqin Yu,Xiaoyu Sun,Xuan Wang,Linxin Tian,Bo Tian,Jia Ge,Yu Yang,Weihong Tan
An oxidase-mimicking Cu-N/C single-atom nanozyme is developed for colorimetric detection of isoniazid (INH). • A H 2 O 2 -free “signal-off” sensing platform is established, enabling simplified operation and enhanced robustness. • A low detection limit of 0.16 μM is achieved, with successful validation in real-world samples and excellent agreement with HPLC. • Integration with a paper-based chip and a smartphone enables on-site INH detection. A colorimetric sensing platform based on Cu-N/C single-atom nanozymes (Cu-N/C SAzyme) was developed for the sensitive and selective detection of isoniazid (INH), a first-line anti-tuberculosis drug. The Cu-N/C SAzyme exhibits intrinsic oxidase-mimicking activity, generating hydroxyl radicals (⋅OH) and superoxide anion radicals (O 2 · − ) to synergistically oxidize colorless 3,3′,5,5′-tetramethylbenzidine (TMB) into its blue oxidized form (oxTMB) without the addition of H₂O₂. Upon introduction of INH, its strong reducing property rapidly reduces oxTMB and scavenges ·OH and O 2 · − radicals, leading to a concentration-dependent decrease in absorbance at 652 nm. The change in absorbance shows a good linear relationship with INH concentration over the range of 1–50 μM, with a detection limit of 0.16 μM. The method exhibits high reproducibility (RSD < 5%) and excellent selectivity, and has been applied to determine INH in pharmaceutical tablets and human serum samples, achieving recoveries of 95.1–104.7%. The proposed method shows good agreement with the standard HPLC method. Furthermore, a portable point-of-care testing (POCT) platform was established by integrating the Cu-N/C SAzyme with a paper-based chip and smartphone. This platform achieved a detection limit of 0.65 μM over the same linear range (1–50 μM), demonstrating its potential for on-site INH screening. Download: Download high-res image (146KB) Download: Download full-size image
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Junying Tian,Qingxia Guo,Tao Wei,Yongle Guo
The electrochemical CO 2 reduction reaction (ECO 2 RR) offers a route to convert CO 2 into value-added chemicals such as ethylene (C 2 H 4 ). However, this process is constrained by the low content and poor stability of Cu + species, which severely limits the selectivity for C 2 products. To address this issue, we designed CuCe-based oxide catalysts, tuning both the morphology of CeO 2 supports and the Cu loading to maximize the abundance of interfacial Cu + -O V -Ce 3+ motifs and thereby enhance both the content and stability of Cu + species. The resulting optimized catalyst, 10CuCe-S (CeO 2 nanospheres with 10 wt% Cu loading), achieves a C 2 H 4 Faradaic efficiency of 40.2% and a partial current density of 6.63 mA cm −2 at −1.2 V vs. RHE. Structural analyses confirm that the optimal support nanosphere structure and 10 wt% Cu loading give the richest Cu + -O V -Ce 3+ interfacial configuration, leading to a high Cu + density of 69.2% in the 10CuCe-S catalyst, which also exhibits excellent Cu + stability. In situ attenuated total reflection surface-enhanced infrared absorption spectroscopy (ATR-SEIRAS) reveals key intermediates (*COOH, *CO, *CHO, *COH) along with rich *COCO species on 10CuCe-S, indicating that abundant Cu + sites facilitate C-C coupling toward C 2 H 4 formation.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Guifeng Tang,Qian Zhang,Na Zhang,Nan Xiang,Huajun Sun,Chuanxing Wang,Ting Wang
The development of bimetallic catalysts offers a promising alternative to monometallic systems for enhancing the selectivity and efficiency of the electrochemical CO 2 reduction reaction (CO 2 RR). However, the fundamental understanding of the synergistic interactions between constituent metals and their role in governing CO 2 RR performance remains insufficient. In this study, we employed a bimetallic Cu/Zn catalyst supported on two-dimensional nitrogen-doped carbon nanosheets (Cu/Zn@CN) to systematically investigate the correlation between structural characteristics, electronic properties, and electrocatalytic performance in CO 2 reduction. Through systematic variation of Zn incorporation, the integration of Cu and Zn within the nitrogen-doped carbon architecture was found to effectively modulate the electronic structure and metal-support interactions, which subsequently governs the binding behavior of key reaction intermediates and enhances both activity and selectivity toward value-added products. The resulting synergistic effects substantially boosted the Faradaic efficiency (FE) and production rate of ethylene and other C 2+ products. The catalyst with a Cu:Zn ratio of 6:2 (Cu 6 Zn 2 @CN) exhibited outstanding performance, achieving a C 2 H 4 FE of 51.16 % with effective suppression of the hydrogen evolution reaction. Combined experimental and density functional theory (DFT) studies revealed that Zn doping modulates the d -band center of Cu, optimizes the adsorption energy of key intermediates such as *OCCO, and reduces the energy barrier of the rate-determining C-C coupling step. The complementary electronic structure and intermediate stabilization effects synergistically contribute to the high C 2+ selectivity. This work provides deep mechanistic insights into the bimetallic cooperation in Cu-Zn electrocatalysts and offers a rational strategy for designing efficient CO 2 -to-C 2+ conversion systems.
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高影响因子
Journal of Cleaner Production
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2026
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IF 10.7
Shanshan Sun,Yurong He,Tianqi Tang,Siyu Hui
While semiconductor-based photocatalysis presents a promising avenue for CO 2 reduction, the application of conventional TiO 2 is restricted by its limited light absorption, short photogenerated charge carrier lifetime, and poor CO 2 adsorption capability. To overcome these constraints, we constructed multifunctional Ag/Cu-TiO 2 /graphitic-phase polyacrylonitrile (g-PAN) composites. In this system, g-PAN functions as a robust support for Ag/Cu nanoparticle-loaded TiO 2 fibers synthesized via electrospinning and heat treatment. UV–Vis NIR DRS analysis reveals synergistic light harvesting where the localized surface plasmon resonance of Ag/Cu nanoparticles extends absorption into the near-infrared and g-PAN doubles the intensity by trapping photons within nanocavities. Beyond these optical benefits, g-PAN enhances CO 2 adsorption and accelerates charge transfer. Consequently, the Ag/Cu-TiO 2 /g-PAN composite achieves a CO evolution rate of 11.82 mmol/g/h under simulated solar irradiation, representing a twice increase compared to the Ag/Cu-TiO 2 counterpart. As evidenced by Electrochemical Impedance Spectroscopy and instantaneous photocurrent response, g-PAN acts as an electronic bridge that significantly reduces the resistance to photogenerated charge migration. This study provides novel insights into designing highly efficient composite photocatalysts for sustainable CO 2 conversion, contributing to the advancement of cleaner production and green technologies.
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高影响因子
MATERIALS & DESIGN
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2026
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IF 8.2
Hongbao Hou,Xu Li
Introduction Esophageal cancer (EC) is the most malignant tumor posing great threat to human health. Chemotherapy, as the first-line treatment for EC, can not yield expected outcome due to chemo-resistance, low efficacy of monotherapy and off-target toxicity. Hence, it is imperative to develop one novel therapeutic strategy that can realize anti-drug resistance, tumor microenvironment response drug release, and integrated multi-modal therapy. Objectives Currently, treatment of EC faces great challenges. One pH-responsive nanoplatform, CDs-DOX-GOx@PEG (CDG@PEG), composed of copper-doped carbon dots (Cu-CDs), doxorubicin (DOX), glucose oxidase (GOx), and polyethylene glycol (PEG), was fabricated to realize better treatment of EC via multi-modal synergistic and targeted therapy. Methods Microscopy. The physicochemical properties of CDG@PEG were determined via TEM, XPS, XRD, FTIR and so on. The anti-tumor capacity was assessed with KYSE-30 cells and xenograft mice models. Moreover, the therapeutic mechanism was assessed by transcriptome, immunofluorescence and immunohistochemical analysis. Results Physiochemical characterization results showed that as designed nanoplatform was successfully fabricated and was endowed with outstanding pH-responsive and O 2 /ROS-generation capacities. In vitro , CDG@PEG exhibited excellent cell uptake and potent tumor cell-killing effect. In vivo, CDG@PEG displayed superior anti-tumor effect accompanied by good biocompatibility. Mechanistically, CDG@PEG realized the EC therapy by down-regulating drug-resistant genes (such as HIF-1α related genes), inducing mitochondria dysfunction, triggering cell apoptosis. Conclusion One multifunctional nanoplatform, CDG@PEG, was successfully prepared and it exhibited excellent in vitro and in vivo anti-tumor effect, which open new venues for developing novel therapeutic strategies for chemo-resistance cancer.
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高影响因子
Journal of Environmental Chemical Engineering
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2026
·Vol. 14
·期 3
·122490
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IF 7.5
Ruiqi Li,Wenxin Diao,Jie He,Fangbo Zhao,Xiao Yan Tang,Yueling Sun,Junqing Li,Lei Wang
As modern industry continues to develop rapidly, water pollution caused by antibiotics and synthetic dyes has become increasingly severe. To address the challenge of efficient treatment of such organic wastewater, a novel modified MIL-101(Fe) photocatalyst was constructed via a synergistic strategy of Cu²⁺ doping and in-situ polymerization of aniline. Under simulated solar irradiation, the composite photocatalyst achieved degradation efficiencies of 93.06% for tetracycline and 94.2% for methylene blue, exhibiting broad-spectrum photocatalytic activity toward various organic dyes. Cu²⁺ and PANI synergistically optimize the band structure, narrowing the bandgap to 2.23 eV while broadening the visible-light response range, promoting charge transport, and forming a stable Z-scheme heterojunction at the interface to suppress the recombination of photogenerated charge carriers. The results of reactive species trapping experiments showed that ·OH, h⁺, and ·O 2 - collectively governed the degradation process. The core mechanism stems from the ligand-to-metal charge transfer (LMCT) characteristics of MIL-101(Fe), the electron-trapping effect of Cu²⁺, and the conjugated conductive network of PANI. In addition, the composite photocatalyst exhibited strong resistance to ionic interference and maintained degradation efficiencies above 80% after five consecutive cycles, demonstrating excellent stability and reusability. This work provides an efficient photocatalytic material and a promising strategy for the comprehensive treatment of organic wastewater.
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高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2026
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IF 4.6
Sumin Xu,Jiajia Zhang,Xin Wang,Jianying Qu
The simultaneous detection of acetaminophen (PA) and its toxic metabolite of 4-aminophenol (4-AP) is crucial for ensuring drug safety and controlling environmental risks. Here, a copper-based porous carbon nanocomposite (Cu/Cu 2 O@PC) derived from core-shell metal-organic frameworks (MOFs) with high conductivity, abundant catalytic sites and a stable porous structure were designed and synthesized through employing a controlled pyrolysis of a precursor with Cu 2 O as the core and CuZn-BTC as the shell, which served as the foundation for constructing a highly sensitive and selective electrochemical sensing platform for simultaneous determination of PA and 4-AP. The resulting sensor exhibited excellent analytical performance under optimized conditions, including wider linear ranges (0.10–300.00 μM for PA and 0.10–400.00 μM for 4-AP), lower detection limits (0.027 μM for PA and 0.015 μM for 4-AP), as well as good reproducibility and stability. And, satisfactory recovery were achieved for real samples analysis. This work not only provides an efficient and reliable analytical method for monitoring phenolic pollutants but also offers a new strategy for designing high-performance electrochemical sensing materials based on MOF-derived architectures.
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高影响因子
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