JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
·
IF 9.6
Qianyi Li,Zuopeng Li,Tianyu He,Bowen Zhu,Caiming Xiong,Sanbing Zhang
Conducting multi-mode detection of multiple targets simultaneously on a single platform can significantly enhance the accuracy and flexibility of the detection process. Herein, a fluorescence-colorimetric dual-mode sensing platform was constructed by in-situ coating polydopamine (PDA) on Cu/Ce multivalent metal-organic frameworks (Cu/Ce-MOFs). The obtained Cu/Ce-MOFs@PDA exhibits excellent fluorescent properties and multienzyme-like nanozymes activity (including mimics oxidase, peroxidase, phosphatase, and laccase), facilitating dual-mode detection of pesticides, phenolic pollutants, and biomolecules. Particularly, the excellent detection performance is attributed to the synergistic Ce 4+ /Ce 3+ -Cu 2+ /Cu + redox cycling and the interfacial electron modulation of polydopamine. In addition, the sensing platform demonstrates excellent signal reproducibility, remarkable anti-interference capabilities and strong applicability to real samples, with a recovery ranging from 84.3% to 118.8%. This work demonstrates a generalizable approach for constructing multifunctional bimetallic MOFs-based nanozymes, enabling the development of integrated analytical platforms with multi-mode signal outputs for environmental and biosensing applications.
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JOURNAL OF SOLID STATE CHEMISTRY
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2026
·
IF 3.2
Xinyao Jin,Jun Liu,Jiaqi Lv,Jie Jiang,Zhenye Ma
In this study, copper acetate, zinc acetate, and 1,3,5-benzenetricarboxylic acid (H 3 BTC) were used as raw materials to successfully prepare Cu-BTC, Zn-BTC, and Cu/Zn molar ratio 1:1, 2:1, and 1:2 Cu–Zn bimetallic metal-organic frameworks (MOFs) via a simple and low-energy room-temperature stirring method. MOFs/AP composite particles were subsequently prepared using a mechanical grinding and mixing method. The influence of them as catalysts on the thermal decomposition of ammonium perchlorate (AP) was systematically studied. Characterization methods like FTIR, XRD, SEM, and TEM validated the materials' structure and morphological features and showed that the Cu/Zn ratio modifies the MOFs’ microscopic morphology. DSC and TG analyses demonstrated that Cu–Zn-BTC (Cu:Zn = 2:1) exhibited excellent catalytic performance even at a low additive amount of only 2%. This catalyst markedly decreased the high-temperature decomposition peak of AP to 297.50 °C while simultaneously enhancing the heat release during decomposition to 1070 J/g. Furthermore, the apparent activation energy was substantially reduced from 216.26 kJ/mol observed for pristine AP to 127.45 kJ/mol. A longitudinal comparison showed that AP catalyzed by Cu–Zn-BTC (2:1) possessed the lowest thermal decomposition peak temperature, outperforming both Cu-BTC/AP (311.00 °C) and Zn-BTC/AP (334.80 °C). Furthermore, it exhibited the highest heat release and the lowest activation energy. Therefore, the synergistic effect between Cu and Zn in the bimetallic MOFs enhanced their catalytic performance, which was significantly superior to that of single-metal MOFs. This work provides important enlightenment for the design of AP-based propellant high efficiency catalyst.
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JOURNAL OF HAZARDOUS MATERIALS
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2026
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IF 10.6
Ying Yang,Longli Bo,Lu Wang,Zhe Li,Jin Yan,Wenjie Wang
To eliminate the environmentally hazardous effect of chlorinated volatile organic compounds (CVOCs) and verify the feasibility of replacing noble metal catalysts with cobalt-based catalysts, monolithic Cu-Co-Ce/TiO 2 /cordierite honeycomb (CH) catalysts were prepared by a sol-gel/impregnation combined method and applied in the catalytic combustion of chlorobenzene, compared with commercial noble metal catalysts. The research suggested that Ce loading had an optimal amount, and Cu-Co 0.86 -Ce 0.54 /TiO 2 /CH catalyst exhibited the highest catalytic activity among four Cu-Co-Ce/TiO 2 /CH catalysts. Chlorobenzene was completely removed at 330℃ and mineralized at 400℃ under the conditions of an initial chlorobenzene concentration (C 0 ) of 1200 mg m −3 and gas hourly space velocity (GHSV) of 5000 h −1 . Compared with three noble metal catalysts, the Cu-Co 0.86 -Ce 0.54 /TiO 2 /CH catalyst had the highest catalytic ability at low C 0 and GHSV; however, its catalytic capacity was lower than that of noble metal catalyst C and higher than noble metal catalysts A and B at high values of C 0 (2000 m −3 ) and GHSV (20000 h −1 ). It is speculated that abundant active particles with different structures on the Cu-Co 0.86 -Ce 0.54 /TiO 2 /CH catalyst’s surface induce the lowest light-off temperature for chlorobenzene oxidation; however, their different catalytic activities also induce intermediate products that compete with chlorobenzene for the active sites, which decreases the catalytic activity of the catalyst, especially at high GHSV. The Cu-Co 0.86 -Ce 0.54 /TiO 2 /CH catalyst exhibited good stability, water resistance, and excellent anti-chlorine-poisoning capacity under two different conditions, confirming the feasibility of replacing noble metal catalysts at the relatively low space velocities. This research further identified the key mechanism behind which is the oxygen vacancies, the acid sites, and the electron transfers among Cu 2+ /Cu + , Co 3+ /Co 2+ , and Ce 4+ /Ce 3+ that promoted the adsorption, activation, and transformation of gaseous oxygen and chlorobenzene. Therefore, chlorobenzene is adsorbed and oxidized onto the active sites of the Cu-Co 0.86 -Ce 0.54 /TiO 2 /CH catalyst by both O ads and O latt, which follows the L-H mechanism and the MvK mechanism, respectively. For the noble metal catalyst C, both the E-R mechanism and the L-H mechanism could coexist in chlorobenzene degradation. This research establishes a theoretical basis for the commercial application of low-cost cobalt-based catalysts to effectively lessen the hazardous effects of CVOCs on the ecosystem and human health.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 3
·122664
·
IF 7.5
Yi Fang,Xinjie Ni,Zhiyi Ye,Yuan Tian,Danying Huang,Fuxiang Wei,Shan Huang,Qi Xiao
The poor dispersion and stability of metal-doped carbon materials prepared via conventional hydrothermal or calcination methods have limited their application in advanced oxidation processes (AOPs). Herein, inspired by a hot-spot-effect-triggered confined coordination strategy, we developed a coconut shell biochar-supported Cu–Ni catalyst (Cu–Ni@BC) for peroxymonosulfate (PMS) activation to degrade multiple antibiotics, including tetracycline hydrochloride (TCH), ciprofloxacin (CIP), and norfloxacin (NOR). The mechanochemical synthesis endowed the catalyst with a high specific surface area, uniform metal dispersion, and strong metal–support interaction, ensuring stable loading and excellent catalytic activity. Under optimal conditions, the Cu–Ni@BC+PMS system achieved 96.7% TCH removal within 30 min, markedly outperforming single-metal systems. Radical quenching experiments and EPR analysis identified O 2 •⁻ as the predominant reactive species, with additional contributions from •OH, ¹O 2 , and SO 4 •⁻, collectively indicating a synergistic radical/non-radical mechanism. The catalyst retained high activity over five cycles (TCH removal efficiencies of 97.1%, 96.0%, 92.7%, 86.9%, and 82.3%), with minimal Cu and Ni leaching. Toxicity evaluation confirmed significant detoxification of TCH and its intermediates. Moreover, the catalyst displayed high degradation efficiencies for CIP (95.7%) and NOR (85.6%), excellent performance in real wastewater, and strong anti-interference tolerance toward common inorganic anions, achieving 85.6–96.9% removal for diverse antibiotics and dyes. This study overcomes the performance bottleneck of traditional single-metal catalysts in PMS activation and provides new insights into designing efficient, stable, and sustainable bimetal–biochar catalytic materials.
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ADVANCED SYNTHESIS & CATALYSIS
·
2026
·Vol. 368
·期 5
·e70307
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IF 3.7
Wei Rao,Yifan Jiang,Qiong Liu,Junjun Zhang,Die He,Rong Chen
While high-valent copper intermediates are pivotal for efficient peroxydisulfate (PDS) activation, their generation and role in heterogeneous catalysis remain unclear. Herein, we demonstrate that a nonstoichiometric Cu 0.84 Bi 2.08 O 4 catalyst enables the dark activation of PDS via a novel pathway dominated by a surface-bound Cu(III)-peroxo intermediate ( ≡ Cu(III)-O−O−SO 3 ). A suite of spectroscopic and chemical probes revealed that this Cu(III)-peroxo species, along with superoxide radicals (•O 2 − ), acts as the primary oxidant, enabling the highly selective and rapid degradation of bisphenol A (BPA) and other phenolic pollutants. Furthermore, H 2 O 2 generated from PDS hydrolysis synergistically participates in the reaction, accounting for the exceptionally high PDS utilization efficiency of the system. The system exhibits remarkable robustness, maintaining high activity over a wide pH range (4–11) and demonstrating strong resistance to interference from ions. This study elucidates a distinct Cu(III)-peroxo-mediated mechanism and offers a new strategy for designing highly selective catalysts for environmental remediation.
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Materials Today Chemistry
·
2026
·
IF 7.4
Guorong Liu,Fangyu Zhang,Wendan Yang,Xiaofeng Sun,Yanyan Dai,Jinyuan Ma,Zao Yi
Ni 0.9 Cu 0.1 Co-LDH/15ReS 2 hollow nanocages was constructed. • The introduction of Cu into NiCo-LDH not only enhanced visible light absorption but also effectively suppresses the recombination of photogenerated carriers. • The BEF formed at the interface between Ni 0.9 Cu 0.1 Co-LDH and ReS 2 can facilitate the spatial separation and directional migration of photogenerated carriers. • The mechanism is explained through the complementary combination of experimental analysis and theoretical calculation. • Outstanding operational stability. The pursuit of efficient and stable photocatalysts for solar-driven hydrogen evolution is critical to addressing the global energy crisis. Herein, a novel S-scheme heterojunction is constructed by integrating ReS 2 particles onto Cu-doped NiCo-layered double hydroxide (Ni 1-x Cu x Co-LDH) hollow nanocages, synthesized via an “etch and grow” method using ZIF-67 as a template. The optimized Ni 0.9 Cu 0.1 Co-LDH/15ReS 2 composite achieves a hydrogen precipitation rate of 4.17 mmol g −1 h −1 under the illumination of visible light, which is 5.48-fold and 3.11-fold higher than those of pristine NiCo-LDH and ReS 2 , respectively. This performance improvement is attributed to the synergy of three key factors. (i) Cu doping effectively modulates the electronic structure of the LDH, introduces defect levels to narrow the bandgap (from 2.1 eV to 1.9 eV) for enhanced visible light absorption, and serves as charge balancer to suppress carrier recombination. (ii) The formation of an ordered heterostructure between Ni 0.9 Cu 0.1 Co-LDH and ReS 2 at their interface creates a built-in electric field that promotes the spatial separation and directional migration of photogenerated charge carriers, markedly reduces the likelihood of their recombination. (iii) The heterojunction exhibits a large specific surface area (109.23 m 2 /g), which effectively exposes more catalytic active sites and prolongs the light propagation path, thereby enhancing surface reaction efficiency and light utilization. The composite also exhibits outstanding stability, retaining 96% of its initial activity after four photocatalytic cycles. Combined theoretical calculations and experimental analyses confirm that the well-matched band alignment and robust interfacial interaction enable effective spatial separation of photogenerated carriers while preserving strong redox potentials. The work demonstrates a very promising strategy for designing high performance LDH-based S-scheme heterojunctions toward sustainable solar-to-chemical energy conversion.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2026
·
IF 8.7
Jinying Shi,Zhendong He,Yifan Xu,Wen Chen
Ethylene is a crucial gaseous phytohormone that regulates diverse aspects of plant growth and development. In Arabidopsis thaliana , perception of ethylene is mediated primarily by ETHYLENE RESPONSE 1 (ETR1), a prototypic membrane protein that couples ligand sensing to signal transduction through a transmembrane copper cofactor-dependent ethylene-binding site and a cytoplasmic histidine kinase domain. Previous work established that ETR1 binds copper and forms covalent homodimers, but the functional significance of its dimeric architecture in signal transduction has remained elusive. In this study, we expressed and purified full-length ETR1 from Pichia pastoris, enabling the systematic dissection of its oligomeric state, copper redox chemistry, and ligand binding effects. Using an in vitro luminescent kinase assay, we demonstrate that the Cu(I)-ethylene complex strongly suppresses ETR1 autophosphorylation, but only when the receptor is in its disulfide-linked dimer form. Monomeric ETR1 generated by reductive cleavage retained basal kinase activity yet was insensitive to ethylene. Furthermore, the ethylene antagonists Ag + and 1-MCP reversed the ligand-induced suppression. Mutational analysis revealed that the H353Q variant lacked kinase activity, while the C65S/H69A double mutant retained basal activity but was resistant to ethylene-induced inhibition, implicating both the catalytic histidine residue and the copper-binding site in the regulatory mechanism. Together, these findings establish that ETR1 functions as a dimer-dependent ethylene sensor, in which covalent dimerization is essential for allosteric coupling between the ligand-binding and kinase domains. This work thus provides a definitive biochemical model for ethylene perception and offers a robust platform for future structural and mechanistic studies of plant membrane-receptor signaling.
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Nature Communications
·
2026
·
IF 18.1
Xie Wangjing,Tian Tingting,Yue Shengnan,Gu Hualong,Shi Ningning,Chen Dechao,Praveen C. S.,Huang Xing
The electrocatalytic CO 2 reduction reaction (e-CO 2 RR) on Cu-based catalysts has been extensively studied; however, achieving high selectivity for C 2+ products and long-term durability remains challenging. Here, we introduce a straightforward approach that enhances both C 2 H 4 selectivity and catalyst durability by incorporating a nitrogen-rich Schiff-base Network (SNW), leveraging a synergistic interaction between Cu and SNW. Notably, Cu cubes with SNW, predominantly exposing the Cu(200) facet, achieve a Faradaic Efficiency (FE) of 71.2% for C 2 H 4 at a current density of 265 mA cm −2 , which not only exceeds tetrahedral and spherical Cu with or without SNW, but also ranks competitively among state‑of‑the‑art Cu-based catalysts reported to date. Theoretical calculations suggest that the presence of SNW on Cu facilitates the *CO-*CHO coupling and/or the C 2 H 4 desorption, thereby enhancing C 2 H 4 formation. Furthermore, the Cu(200)-SNW surface exhibits optimized Gibbs free energies for the reaction steps compared to bare Cu and other SNW-modified Cu surfaces, which rationalizes the experimental observations. In situ electron microscopy further suggests that SNW confers durability by stabilizing Cu facets and preventing corrosion and dissolution under reaction conditions.
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MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 3
·168
·
IF 5.4
Ma Ya,Zheng Yuqing,Wang Jiahao,Bai Liwei,Liu Jizhong,Bai Weidong,Zhao Xiaojuan
Cu-metal organic framework (MOF) derived porous carbon (Cu/Cu 2 O@C 700 ) derived from Cu-based MOF was prepared by one-step pyrolysis, and then used together with nitrogen-doped longan shell carbon (NCs) to establish a new electrochemical sensor for the rapid detection of enrofloxacin (ENR) by differential pulse voltammetry. The materials and the preparation process of electrochemical sensor were characterized. Results have shown that Cu/Cu 2 O@C 700 exhibited abundant porous structures, high surface area, and numerous active sites, which significantly improved response sensitivity. NCs is a porous carbon material which possess high specific surface area and make the diffusion and transport of electrolyte ions easier. Under optimal conditions, the peak current of ENR exhibits favorable linear relationships with the concentration within a range 0.1–1000 ng mL − 1 , and the detection limit is 7.73 × 10 − 3 ng mL −1 (S/ N = 3). The sensor has good selectivity, stability and repeatability, and good recovery (93.90 ~ 104.0%, RSD<4%) for the detection of ENR in fresh fish and shrimp. Compared with LC-MS/MS, it also shows competitive accuracy, which is of great significance in ensuring the safety of aquatic products. Graphical abstract
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TOPICS IN CATALYSIS
·
2026
·
IF 3.7
Mu Yifang,Li Yanhong,Huang Aisheng
Direct synthesis of dimethyl ether (DME) from carbon dioxide (CO 2 ) hydrogenation by using bifunctional catalysts has attracted much attention in view of CO 2 conversion and utilization. However, direct CO 2 hydrogenation to DME is challenging due to kinetics and thermodynamic limitations, thus requiring the development of more effective bifunctional catalysts. In this work, metal-organic framework (MOF) Cu/Zn-BTC derived CuZnO catalyst is developed and combined with HZSM-5 for direct CO 2 hydrogenation to DME. The influence of Si/Al ratio of HZSM-5, mass ratio of CuZnO and HZSM-5, reaction temperature, reaction pressure and space velocity on the catalytic performances of the CuZnO/HZSM-5 bifunctional catalysts is systematically examined in a fixed-bed reactor. Attributing to a high activity of the Cu/Zn-BTC derived CuZnO catalyst for CO 2 hydrogenation to methanol, the CuZnO/HZSM-5 bifunctional catalysts display high CO 2 conversion and DME selectivity. Under a mild reaction condition (225 °C and 3.0 MPa), a high CO 2 conversion of 54.3% and DME selectivity of 79.5% are obtained for the bifunctional catalysts, which outperform the state-of-the-art catalysts for CO 2 hydrogenation to DME. Further, after 100 h of reaction, the bifunctional catalyst can still maintain a high CO 2 conversion rate (~ 52.6%) and DME selectivity (~ 77.3%), which suggests promising prospects for industrial applications.
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Journal of the Taiwan Institute of Chemical Engineers
·
2026
·
IF 6.9
Abrar Hussain,Ndumiso Vukile Mdlovu,Kuen-Song Lin,Chi-Jung Chang,Amin Hussain
Background The conversion of CO 2 into value-added fuels and chemicals remains one of the major challenges in catalysis and sustainable energy research. Developing efficient catalysts for CO₂ hydrogenation to methanol and dimethyl ether (DME) is essential for reducing greenhouse gas emissions and promoting carbon recycling. Methods In this work, a Zr-modified CuO–ZnO–Al₂O₃ (CZZA) catalyst was synthesized via a co-precipitation method for CO 2 hydrogenation. The catalyst systems “CZZA/HZSM-5-L” and “CZZA/com-HZSM-5” represent Zr-modified CZZA physically integrated with loofah-templated and commercial HZSM-5 (Si/Al = 25), respectively. A bio-HZSM-5 catalyst was also prepared using loofah sponge and rice husks as dual biotemplates to promote methanol dehydration into DME. The novelty lies in (i) the dual-biomass templating strategy (silica-rich rice husk vs. low-silica loofah) to achieve macro– meso –micro hierarchies while retaining MFI crystallinity, and (ii) Zr-promotion of the Cu–ZnO–Al₂O₃ matrix to enhance Cu⁺/Cu²⁺ and Cu–Zn interfacial sites, enabling efficient one-pass CO₂ → MeOH → DME conversion at 280 °C and 30 bar. Significant findings Zr incorporation significantly improved the structural and electronic properties of the CZZA catalyst, leading to enhanced surface area, active site dispersion, and CuO–ZnO interfacial synergy. Among all tested catalysts, the CZZA/HZSM-5-L bifunctional catalyst achieved the highest DME yield (13.2 %), DME selectivity (58.6 %), and CO₂ conversion (22.5 %) at 280 °C and 30 bar. An economic evaluation of 5- and 10-ton-per-day (TPD) DME production using refinery waste CO₂ showed payback periods of 2.98 and 2.44 years, respectively. Sensitivity analysis (±20 % variation in H 2 and DME prices) confirmed the payback remained below 4 years, demonstrating the technical and economic viability of the developed Power-to-DME process.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Xiaojie Zhang,Kangrui Ma,Hong Peng,Yuefa Gong,Yanjun Huang
Simultaneous removal of chromium(VI) oxyanions and heavy metal cations from contaminated water body is of great significance. In this work, a novel and bifunctional sorbent, imidazolium functionalized polysulfone/DTPA-chitosan composite bead (IMPSF/DACS) was successfully constructed by phase inversion method and applied for co-removal of Cr(VI) and Cu(II) from aqueous solutions. The maximum adsorption capacities for Cr(VI) and Cu(II) on IMPSF/DACS in single system at pH 5 were 56.72 and 43.05 mg g −1 , respectively. In binary system, the removal of Cr(VI) could be further enhanced by the presence of Cu(II) due to the electrostatic shielding effect, while Cu(II) sorption was not significantly affected by the coexistence of Cr(VI). Moreover, IMPSF/DACS could simultaneously reduce low concentrations of Cu(II) and Cr(VI) in simulated contaminated lake water below the limit, while also showing good reusability in co-removal of Cr(VI) and Cu(II). The order of inhibitory effect of competing anions on Cr(VI) removal was as follows: H 2 PO 4 − < Cl − < NO 3 − < SO 4 2− , while the competing hardness cations had a little effects on the adsorption of Cu(II), implying that the Cr(VI) removal was mainly depended on the electrostatic attraction between Cr(VI) and imidazolium ions modified on IMPSF/DACS, and Cu(II) uptake was associated with chelation of DACS encapsulated in IMPSF/DACS beads. These assumptions were confirmed by XPS, FTIR and EDS-mapping techniques.
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