Journal of Materials Chemistry C
·
2025
·
IF 5.1
Doan Thi Luu Luyen,Dinh Chuong Nguyen,Dat Ngoc Trinh,Son Vu Truong Le,Soon-Gil Yoon,Nguyen V. Hieu
Rationally designed electrocatalysts with excellent catalytic activity and robust stability are essential for enhancing the performance of water splitting toward a near-future hydrogen economy. In this work, we report a highly efficient triphase hetero-interface heterostructured electrocatalyst consisting of ultrafine Rh nanoparticles anchored on Cu3P/MnP nanosheets supported on Ni foam (labelled Rh/Cu3P/MnP) to boost the performance of overall water splitting. Experiments clarify the impressive role of the triphase hetero-interface of Rh, Cu3P, and MnP in interfacial electronic redistribution, which is significant for optimizing the catalyst's ability to adsorb and desorb reaction intermediates, thereby accelerating electrochemical reaction kinetics. Additionally, the rationally controlled multi-dimensional structure-comprising 0D Rh nanoparticles, 2D Cu3P/MnP nanosheets, and a 3D Ni substrate-endows the catalyst with a large electrochemically active surface area, excellent charge transfer ability, and abundant accessible active species. Therefore, the Rh/Cu3P/MnP catalyst demonstrates promising catalytic performance for the two key reactions in water splitting: the hydrogen evolution reaction and the oxygen evolution reaction. Moreover, a water electrolyzer utilizing Rh/Cu3P/MnP catalytic electrodes exhibits remarkable efficiency and remains stable over 50 h of continuous operation.
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Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2025
·
IF 4.6
Jiangnan Chen,Zhouchao Wang,Lin Xu,Huifang Wang,Xianghua Gao,Baolong Niu,Wenfeng Li
In the realm of glucose detection, nickel-based and copper-based nanocomposites have garnered significant attention due to their exceptional catalytic performance and high sensitivity. This study realized linear detection across dual concentration ranges in alkaline media by in situ growing Ni/Cu-BTC spherical nanocatalysts on reduced graphene oxide (rGO). From 350 μM to 2.95 mM, with a low detection limit (LOD L ) of 21.7 μM (S/N = 3) and a sensitivity (S L ) of 40 nA mM −1 cm −2 ; from 2.95 mM to 9.45 mM, the high-concentration detection limit (LOD H ) is 1.1 mM (S/N = 3), with an improved sensitivity (S H ) of 165.7 nA mM −1 cm −2 . The response time (t) is under 2 s. Additionally, the sensor demonstrated robust interference resistance, excellent stability (%RSD = 3.57 %), repeatability (%RSD = 2.27 %), and reproducibility (%RSD = 2.34 %). In real-world sample testing, this sensor measured glucose concentrations in plasma from healthy individuals both on an empty stomach and half an hour after eating, with a relative standard deviation range of 0.94 %–2.33 %. These results suggest that the rGO-Ni/Cu-BTC composite is a promising enzyme-free electrochemical sensing material for glucose detection
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Journal of Water Process Engineering
·
2026
·
IF 6.6
Lei Fang,Yuman Lv,Xinlei Liu,Shijie Wang,Miaomiao Ye
An iron–copper bimetallic biochar catalyst (Fe-Cu@BC) was synthesized to establish a heterogeneous peroxymonosulfate (PMS) activation system aimed at improving the removal of typical organic pollutants in drinking water sources. The physicochemical properties of the catalyst, the catalytic performance, reactive species generation, pollutant degradation pathways, and impacts on dissolved organic matter (DOM) transformation were systematically investigated. Under the optimized conditions, a humic acid (HA) removal efficiency of 66.28% was achieved, which was attributed to the cooperative redox behavior of Fe and Cu species. Radical quenching experiments and electron paramagnetic resonance (EPR) spectroscopy confirmed the simultaneous generation of OH, and 1 O 2 . A quantitative chemical probe-based kinetic analysis clarified the contributions of individual reactive species, and pollutant degradation proceeded through the combined action of OH/-driven radical oxidation and 1 O 2 -mediated selective oxidation. Advanced characterization using three-dimensional excitation-emission matrix (3D-EEM) fluorescence spectroscopy and Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) showed that the system altered the molecular composition of DOM in both conventionally treated and advanced-treated effluents, converting high-molecular-weight, reduced components into low-molecular-weight, more oxidized intermediates. This work provides an effective catalytic strategy for the deep treatment of organic-contaminated water using carbon-based bimetallic activators.
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ChemNanoMat
·
2026
·Vol. 12
·期 1
·e202500682
·
IF 2.6
Jingzhou Liu,Yangjun Guo,Xiaojun Zeng
Direct ethanol fuel cells have attracted significant attention due to their high energy density, environmental friendliness, fuel availability, and low toxicity. However, their broader application is constrained by the anode catalyst limitations such as low active site density and low stability caused by the CO* intermediate poisoning. In this work, Pd metallene was synthesized via a hydrothermal method, and transition metal Cu was introduced to obtain PdCu bimetallene supported with porous Cu nanoparticles (NPs). The results indicate that the unique configuration of Cu not only enhances the CO* intermediate tolerance of Pd through electronic interactions but also leverages the intrinsic catalytic activity of Cu, leading to a further improvement in catalytic performance. Therefore, the designed PdCu bimetallene/Cu NPs exhibits a high mass activity of 1.26 A mg Pd −1 for the ethanol electro oxidation reaction, which is 8.4 times that of commercial Pd/C and superior to recently reported Pd-based catalysts. In addition, it maintains a current density of 7.87 mA cm −2 after a 3000 s stability test, demonstrating considerable potential for practical applications. This work provides feasible ideas for the microstructure design and electronic control optimization of metallene in small molecule catalysis.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 8.3
Baker Rhimi,Attiq Ur Rehman,Yuanzhi Hu,Sherif A. El-Khodary,Zhehao Liu,Min Zhou,Karim Harrath,Qiang Ma,Long Zhao,Zhifeng Jiang,Weidong Shi
The development of efficient and stable photocatalysts for hydrogen evolution is crucial for solar-to-fuel conversion. Here, we report Cu-porphyrin (CuTCPP)/oxygen-doped g-C 3 N 4 (O–CN) nanohybrids as high-performance sonophotocatalysts, where strong π–π stacking interactions create robust heterojunctions that promote efficient charge separation and transfer. The optimal 2 % CuTCPP/O–CN2 sample exhibited a 3.3-fold enhancement in H 2 evolution compared to O–CN2 under simulated light coupled with ultrasonication. Experimental results combined with density functional theory (DFT) calculations confirmed the suppression of charge recombination and highlighted the synergistic contribution of ultrasonic excitation with light irradiation. Furthermore, oxygen doping was found to not only reinforce the CuTCPP/O–CN interface but also provides robust anchoring sites for Pt cocatalysts, preventing leaching and aggregation while electronically modulating Pt to optimize its d-band center and H 2 adsorption free energy. These findings provide valuable insights into the rational design of stable and high-active hybrid photocatalysts for solar fuel generation.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
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IF 19.7
Pengchao Ren,Xin Fu,Shihang Meng,Yehao Yu,Yujing Weng,Liang Si,Yulong Zhang,Yi-Fan Han
Ce-modified CuZn-based catalysts show promising performance in CO 2 hydrogenation to methanol. However, probing the nature of their active surface and elucidating the role of Ce in regulating reaction pathways at the molecular level remain challenging. In this study, a series of CuZnCe catalysts were prepared with varying CeO 2 contents. Kinetic tests reveal that CuZnCe catalysts exhibit significantly higher activity and methanol selectivity compared to the unmodified CuZn catalyst. In-situ AP-XPS analysis demonstrates that Ce species preferentially migrate toward the catalyst surface and exist predominantly in the form of Ce 3 + during CO 2 hydrogenation to methanol. In-situ DRIFTS confirms that the CuZn catalyst facilitates the direct hydrogenation of CO 2 to methanol via a formate intermediate. In contrast, the introduction of Ce shifts the reaction mechanism toward the reverse water-gas shift reaction followed by CO-hydrogenation (RWGS + CO-hydro), as Ce 3+ sites display a high propensity to stabilize carboxylate (CO 2 δ- ) intermediates derived from CO 2 . Meanwhile, the Cu-ZnO x interface remains essential for H 2 dissociation and supplying hydrogen species. The enhanced catalytic performance of the CuZnCe catalysts is primarily attributed to the synergistic effects between the Cu-ZnO x and Cu-CeO x interfaces. These findings highlight the pivotal role of metal-oxide interfaces in controlling reaction pathways and methanol selectivity during CO 2 hydrogenation to methanol, providing valuable insights for the rational design of high-performance catalysts.
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MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 3
·126
·
IF 5.4
Zhou Yu,Wu Runqiang,Fan Lingling,Qui Pengtao,Deng Xiaohua,Tan Xiaohong,Dong Shuaikang,Li Canru,Chen Jiejing,Liang Jintao,Li Guiyin
Hepatocellular carcinoma (HCC) is one of the most lethal malignancies worldwide, and early diagnosis is crucial. Golgi protein 73 (GP73) has emerged as a promising serum biomarker for HCC. However, current detection methods often fail to meet routine screening requirements due to limitations in sensitivity and operational simplicity. To address these challenges, we have developed a novel fluorescent aptamer-based sensor for highly sensitive GP73 detection based on the fluorescence resonance energy transfer (FRET) mechanism between graphitic carbon nitride quantum dots (g-CNQDs) and a copper-based metal–organic framework (Cu-TCPP). g-CNQDs were covalently conjugated with a GP73-specific aptamer to serve as the fluorescent donor, while two-dimensional Cu-TCPP nanosheets acted as the efficient acceptors. Fluorescence was quenched upon donor–acceptor interaction via FRET. In the presence of GP73, aptamer–target binding disrupted FRET interaction, separating the donor from the acceptor and restoring fluorescence in a concentration-dependent manner. Under optimal conditions, the sensor exhibited excellent linearity over a concentration range 1.0–225.0 ng mL⁻¹, with a detection limit as low as 0.907 ng mL⁻¹. Recoveries for spiked human serum samples ranged from 95.96% to 103.85%, with relative standard deviations (RSDs) of 0.38%–5.48%. The developed aptamer sensor demonstrated excellent sensitivity, selectivity, and stability, providing a powerful tool for early HCC diagnosis and offering strong potential for real-time analytical applications. Graphical A novel fluorescent aptamer sensor for GP73 detection by leveraging the fluorescence resonance energy transfer (FRET) mechanism between graphite-phase carbon nitride quantum dots (g-CNQDs) and a copper-based organic framework (Cu-TCPP). This platform achieved a good linear relationship with GP73 concentration in the range of 1.0–225.0 ng mL -1 for GP73 concentration, and a detection limit of 0.907 ng mL -1 .
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Solar RRL
·
2026
·Vol. 10
·期 1
·e202500927
·
IF 4.7
Yu Li,Guo Lu,Jieyu Zheng,Jie Chen,Shuaibing Wang,Mengmeng Ma,Zhijie Wang,Aiwei Tang
Ensuring broad-spectrum visible-light absorption and efficient electron extraction is essential for enhancing the efficiency of photocatalytic hydrogen production. To achieve this, manipulating carrier dynamics through cocatalyst heterojunction engineering has attracted considerable concern. However, conventional narrow-bandgap Cu–In–Zn–S (CIZS) nanocrystals (NCs) typically exhibit limited photocatalytic activity due to severe exciton annihilation. Herein, two-dimensional (2D) CIZS nanobelts (NBs) were coupled with Ni 9 S 8 cocatalyst to construct a library of CIZS/Ni 9 S 8 Schottky heterojunctions synthesized via a combined colloidal one-pot and hot-injection strategy. As anticipated, the CIZS/2.0%Ni 9 S 8 heterojunction displayed the optimal photocatalytic hydrogen evolution activity of 2.75 mmol g −1 h −1 , ≈3.31 times higher than that of pristine CIZS NBs (0.83 mmol g −1 h −1 ). Experimental results uncovered that the enhanced photocatalytic performance originated from the formation of the CIZS/2.0%Ni 9 S 8 Schottky heterojunction, which facilitated efficient charge transfer from CIZS NBs to Ni 9 S 8 and hindered the return of electrons. Moreover, Ni 9 S 8 serves as active catalytic sites, significantly accelerating surface proton reduction reactions. This study provides valuable insights into the rational design and precise synthesis of colloidal multinary Cu-based chalcogenide heterojunctions for efficient photocatalytic energy conversion.
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HYDROGEOLOGY JOURNAL
·
2026
·
IF 2.3
Wang Huan,Zhang Zhenfei,Liang Haozhi,Liu Yongyi,Du Xinqiang
Clogging of porous media during artificial recharge is a technical bottleneck that limits the application of this technology. Sand column experiments were used to simulate the clogging of porous media to explore the effect of Cu(II) alone and in combination with suspended solids on hydraulic conductivity ( K ). The results indicate that at the end of experiments, the normalized hydraulic conductivity ( K ’) in experimental groups with Cu(II) concentrations of 1, 3, and 5 mg/L decreased to 0.634, 0.323, and 0.242, respectively. The degree of clogging increases with increasing Cu(II) concentration. At the end of recharge, the K ’ of the porous media in the 1 mg/L Cu(II), 100 NTU kaolin, and 100 NTU kaolin + 1 mg/L Cu(II) experimental groups decreased to 0.634, 0.233, and 0.016, respectively. The presence of Cu(II) and kaolin can individually cause clogging of porous media, but when Cu(II) coexists with kaolin, the degree of clogging significantly intensifies. The impact of Cu(II) and kaolin on porous media is not simply additive, but synergistic. The presence of Cu(II) changes the surface charge of suspended solids, increases particle size, and enhances migration, thereby significantly exacerbating clogging. This study systematically elucidates the clogging mechanism of suspended solids under the influence of Cu(II), thus providing a scientific basis for the design and management of artificial recharge systems.
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Green Energy & Environment
·
2026
·
IF 14.6
Chunxia Wang,Yanxin Sun,Zhuo Wang,Yifeng Zeng,Qin-Yi Li,Xinchen Kang,Guoyong Huang
Copper (Cu) doping modifies the band structure of TiO 2 by slightly narrowing the bandgap and shifting the Fermi level, while creating localized states that serve as temporary electron reservoirs to suppress carriers rapid recombination. On this basis, a ternary heterojunction Cu-TiO 2 /g-C 3 N 4 (Cu-CT) was constructed by anchoring Cu-TiO 2 onto g-C 3 N 4 nanosheets. The synergistic interaction between Cu-doping and the S-scheme interfacial configuration generates an internal electric field that promotes vectorial carrier migration, enabling electrons in the conduction band of Cu-TiO 2 and holes in the valence band of g-C 3 N 4 . This spatial separation preserves strong redox potentials and markedly suppresses recombination. Consequently, Cu-CT achieves a hydrogen evolution rate of 10.21 mmol g -1 h -1 , more than twenty times higher than pristine TiO 2 . In-situ XPS, KPFM, and DFT analyses collectively validate the S-scheme charge-transfer pathway and highlight the synergistic role of Cu doping with heterojunction engineering, providing mechanistic insights to the rational design of advanced ternary photocatalysts for efficient solar-driven hydrogen production.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Xinya Chen,Chengcheng Zhu,Qinghua Liu,Yaning Liu,Miao Ji,Haonan Chen,Lu Jiang,Gang Lu
Electroreduction of carbon dioxide (CO 2 ) to valuable chemicals provides a promising solution to reducing CO 2 emissions and alleviating energy crisis. Coating or grafting catalyst with organic molecules or polymers could effectively improve the Faradaic efficiency (FE) of C 2 products in CO 2 electroreduction (CO 2 ER). However, to date, most efforts have focused on single-component coatings to enhance the FE of C 2 products in CO 2 ER. Herein, the surface of copper (Cu) catalyst is simultaneously coated with a thin layer composed of both small molecule of benzotriazole (BTA) and polymer of polyvinyl chloride (PVC). This BTA&PVC-coated Cu catalyst demonstrates a high FE of C 2 products up to 71.0 ± 5.6% in an H-type electrochemical cell, in contrast to the FE of ~36% for bare Cu. The improved CO 2 ER performance is attributed to the effective stabilization of key reaction intermediates and optimized electronic structure on Cu surface, facilitated by the synergistic effect of the simultaneously coated BTA&PVC film. In addition, the BTA molecules could be perfectly confined within PVC matrix, resulting in a high catalytic stability. In summary, this work provides an effective strategy to effectively improve the FE of C 2 products in CO 2 ER and this strategy could be easily migrated to many other catalytic systems.
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MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2024
·
IF 4.2
Yonghua Wang,Ruilin Wang,Yucheng Hu,Lin Zheng,Ganhua Fu,Gang Wang,Yufeng Zhou,Qiaomu Xie,Jingong Pan,Shou Peng
In recent years, the study of Cu (Ӏ) precursors in high-performance CdTe thin-film solar cell devices has received increasing attention. However, few studies have been reported on nanoscale Cu (I) precursors in large-area CdTe devices (≥1 cm 2 ). Here, three different Cu (Ӏ) nano precursors have been rapidly prepared by solution method (CuCl ethanol solution, CuI acetonitrile solution, and CuSCN aqueous ammonia solution) and their effects on the performance of commercial large-area CdTe thin-film solar cells have been investigated. The results show that the distribution amount and uniformity of the nano precursor particles on the CdTe back surface have a large impact on the device performance. The CuCl nanoparticles are more uniformly distributed and the device performance is more excellent. CuI nanoparticles easily formed clusters at grain boundaries. Denser distribution of CuSCN nanoparticles . The thermal diffusion conditions (temperature, time and precursor concentration) have a significant effect on the device performance, but the most reasonable thermal diffusion conditions tend to be the same for all devices. This suggests that the thermal diffusion conditions are determined by the nature of the CdTe absorber layer itself and are not interfered by different nano precursors.
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