INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Yisha Zheng,Huiqin Zhang,Qiuwen Huang,Yanhui Zhang,Xian Zhang,Wenlong Xiang
Tetracycline hydrochloride (TCH), as a representative antibiotic pollutant, poses significant environmental risks due to its persistence and ecotoxicity. Conventional degradation technologies are often hampered by inefficiency and high operational costs. To overcome these limitations, a simple sodium borohydride (NaBH 4 ) reduction method was employed to modify CoFe Prussian blue analogue (CoFe-PBA), significantly its intrinsic activity. Subsequently, low-level Cu loading (2 wt%) was introduced, further substantially boosting the degradation efficiency. Comprehensive characterization confirmed that this sequential modification optimizes the material structure and enhances the density of active sites. The optimized 2 %Cu/CoFe PBA catalyst efficiently activated peroxymonosulfate (PMS), achieving >96 % TCH removal within 30 min under optimal conditions. In addition, the 2 %Cu/CoFe PBA exhibited excellent stability across a broad pH range (5–11) and in complex anionic environments. Radical quenching experiments and mechanism analysis revealed that non-radical singlet oxygen ( 1 O 2 ) and sulfate radical (SO 4 · − ) pathways were the dominant contributors to TCH degradation, with superoxide radical (O 2 · − ) and hydroxyl radical (∙OH) playing comparatively minor roles. This high performance stems from synergistic Fe/Co/Cu interactions promoting efficient PMS activation. This work provides a facile, efficient modification strategy (NaBH 4 reduction and minimal Cu loading) for PBAs and clarifies the predominant reactive species responsible for high-performance antibiotic degradation.
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Jijun Guan,Liwei Wang,Fugang Xu,Guangran Ma
Ratiometric electrochemical probes are vital for reliable sensing but often suffer from complex preparation, reference molecule leakage, and single function. To address these limitations, this study reports a flower-like Cu-doped zeolite imidazolate framework (Zn 0.5 /Cu 0.5 /Co-ZIF) prepared at room temperature via simple stirring. This material acts as both an electrode material and a robust ratiometric probe for detecting catechol (CC) and acetaminophen (AP). Compared with pristine Zn/Co-ZIF, Cu doping confers several advantages: transforming lamellar Zn/Co-ZIF into a flower-like structure for enhanced electron and mass transfer; significantly improving redox current of CC/AP for high sensitivity; and generating a stable Cu-based redox signal as an internal reference, improving accuracy. The sensor achieved wide linear ranges (CC: 0.5–150 μM; AP: 0.2–300 μM) and low detection limits (CC: 0.12 μM; AP: 0.04 μM) for determination of phenol compounds. Compared to single-signal assay, the ratiometric approach showed lower RSDs and superior linear correlations. The sensor also achieved satisfactory simultaneous detection of CC and AP, along with accurate quantification in lake water samples. This work presents a facile strategy for a MOF based reference probe, offering a promising platform for stable and accurate ratiometric electrochemical sensors.
✓ 已验证
产品关联
DOI
高影响因子
Environmental Technology & Innovation
·
2025
·
IF 7.1
Shuzhen Yang,Bingjing Tian,Yanfang Huang,Bingbing Liu,Shengpeng Su,Wenjuan Wang,Guihong Han
The persistent dye rhodamine B (RhB) in textile wastewater poses severe ecological threats, demanding efficient and sustainable treatment technologies. This study synthesized a novel trimetallic Cu-Fe-Co catalyst via a nitrogen-atmosphere co-reduction method. The catalyst’s unique advantage lies in the synergistic effects of Cu, Fe, and Co, which significantly enhance catalytic performance. The redox-active phases of Cu, combined with the Fenton-like reactivity of Fe, are further optimized by Co doping to improve reactive oxygen species (ROS) generation and electron transfer efficiency. Characterization revealed a dendritic structure dominated by Cu, Cu₂O, and FeO phases, with Co-induced lattice expansion (Δ d / d = +0.25 %) enhancing surface reactivity. Under optimized conditions (pH 3, 1.5 g/L catalyst, 20 mg/L RhB), the ternary Cu-Fe-Co catalyst achieved 99.8 % RhB degradation within 40 min, with high mineralization efficiency (46.5 % TOC removal, 82.1 % COD removal). Mechanistic studies demonstrated that Co incorporation promotes the conversion of superoxide radicals (·O₂⁻) into long-lived singlet oxygen (¹O₂), synergistically enhancing oxidative effects from ·OH and ¹O₂, while in situ H₂O₂ generation drives radical chain reactions. Compared to binary catalysts, the ternary system exhibits superior degradation kinetics for RhB and maintains 95.8 % degradation efficiency even after five cycles. This study provides new insights into trimetallic catalyst design, highlighting its practical potential for wastewater treatment.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Bio Materials
·
2025
·
IF 4.7
Zhichao Zhang,Xijing Zhuang,Xufeng Dong,Jingyuan Zhao,Hao Zhang,Hong Zheng,Chang Xu
The moist wound environment of the human body immediately following injury is highly susceptible to microbial colonization and subsequent infection, potentially triggering a prolonged inflammatory response. Existing dressings tend to be more monofunctional, making it difficult to cope with wound bleeding and bacterial growth at the same time. The development of more effective wound dressings is a critical priority in contemporary wound care. In this study, we developed a hydrogel wound dressing comprising two components: (1) antimicrobial particles of curcumin (Cur)-loaded bimetallic organic framework (Cu/ZIF-8), and (2) a carrier hydrogel formed by methacryloylated gelatin (GelMA) cross-linked with methacryloylated hyaluronic acid (HAMA). The experimental results confirmed the successful loading of curcumin with 45.6% for Cu/ZIF-8@Cur. In addition, the material exhibits pH-responsive behavior, excellent biocompatibility (>80% cell survival), low hemolytic activity (<5%), and potent antimicrobial activity (≥99%) against E. coli and S. aureus. It is stable under neutral conditions and releases bactericidal particles under bacterial infection (in an acidic environment) to achieve sterilization. This study addresses the limitations of gelatin-based dressings, such as inadequate hemostatic capacity and weak antimicrobial performance, and it demonstrates promising potential for clinical translation.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Environmental Science-Nano
·
2025
·
IF 5.1
Yihui He,Lin Ye,Wanglai Cen,Jianjun Li,Dengrong Sun
The effective elimination of the highly toxic phosphine (PH3) is crucial for environmental and human health. Nonetheless, developing efficient methods for the removal of PH3 and its conversion into valuable resources remains a significant challenge. Herein, we reported a novel strategy of N doping in Cu-doped active carbon (Cu-AC) to realize efficient PH3 removal. Introduction of N into Cu-AC induces strong interaction between Cu and N, which greatly promotes the dispersion of Cu species and stabilize the active Cu2+ species of PH3 removal due to the electronegativity of N. In addition, doping N also improves the basic intensity and oxidation capability, which provide high benefits for the adsorption and activation of PH3. As a result, the obtained N-doped Cu-AC (Cu-N-AC) shows exceptional performance for the oxidative removal of PH3 to generate H3PO4 at 70 °C, reaching a high breakthrough capacity of 534.5 mg·g-1, which outperforms most of the previously reported catalysts. The Cu-N-AC can be easily regenerated through water washing and air drying, showcasing its great potential for practical applications. This study not only introduces a promising material for PH3 removal, but also offers an innovative approach to design catalysts for efficient PH3 utilization, presenting an important contribution to the field of phosphorus resource recovery.
✓ 已验证
产品关联
DOI
高影响因子
Frontiers in Pharmacology
·
2025
·
IF 4.8
Sitong Lai,Kunhui Sun,Yun Wu,Xueyuan Wu,Yiqi Yan,Guojing Liu,Xiaoyi Liu,Yuanyuan Ge,Lina Zeng,Ziyu Guo,Shuhong Wang,Ping Wang,Bing Wang,Han Zhang,Xie-an Yu
Introduction: The procedural complexity and time-consuming of conventional pesticide residue detection methods in traditional Chinese medicines (TCMs) significantly impeded their application in modern systems. To address this, this study presented an innovative dual-mode sensor driven by Cu2+/Cu+ redox-cycling, which achieved efficient signal transduction from enzyme inhibition to optical response for rapid acetylcholinesterase (AChE) activity and organophosphorus pesticide (OP) residue detection.Methods: The AB-Cu NPs sensor, a dynamic redox-responsive system, was constructed via coordination-driven assembly of Azo-Bodipy 685 (AB 685) and Cu2+. Initially, Cu2+ quenched the optical signals of AB 685 through photoinduced electron transfer (PET), maintaining an “OFF” state. Upon AChE-catalyzed hydrolysis of acetylthiocholine chloride (ATChCl) to thiocholine (TCh), Cu2+ was reduced to Cu+, thereby activating dual ultraviolet-visible (UV-Vis)/fluorescence (FL) signals (“ON” state). OP residues were quantified by their inhibition of AChE, which blocked Cu2+/Cu+ conversion and suppressed signal generation.Results: The sensor exhibited positive sensitivity with detection limits of 0.0327 U/L for AChE activity and 1.72 ng/mL for triazophos, leveraging Cu2+/Cu+ redox-cycling for signal amplification. Notably, the Cu2+/Cu+ valence interconversion coupled enzyme inhibition with probe responsiveness, ensuring the both procedural easily and rapid response.Discussion: This study developed a portable detection platform based on valence interconversion coupled enzyme inhibition with probe responsiveness. The dual-signal output enhanced reliability and the redox-driven mechanism enabled signal amplification. This advancement provided a real-time, portable and rapid detection for AChE activity and pesticide exposure of TCMs, bridging gaps in agricultural safety and pharmaceutical standardization.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2025
·
IF 4.6
Shiwen Wu,Yaxin Li,Shuqi Wang,Hongzhi Lu,Shuzhen Zheng,Shuai Sun,Shoufang Xu
Herein, a method was developed for triple emission ratiometric fluorescence/colorimetric dual-mode detection of glutathione (GSH) based on multifunctional copper-doped carbon dots (Cu-CDs). Cu-CDs displayed dual emission at 465 nm and 650 nm, along with oxidase-like (OXD) and peroxidase-like (POD) activities. The Cu-CDs effectively catalyzed the oxidation of o -phenylenediamine (OPD) to 2,3-diaminophenazine (DAP), which emitted yellow fluorescence at 550 nm and selectively quenched the blue fluorescence of Cu-CDs at 465 nm through an inner filter effect (IFE), while the red fluorescence at 650 nm unaffected. GSH could effectively chelate Cu 2+ in the Cu-CDs, inhibiting DAP formation, led to the recovery of the 465 nm fluorescence, enabling ratiometric fluorescence detection of GSH. The triple-emission system enabled the discrimination of structurally similar substances while improved the sensitivity of the detection. The fluorescence detection demonstrated a limit of detection (LOD) of 1.13 μM for GSH. For colorimetric detection, Cu-CDs catalyzed H 2 O 2 -mediated 3,3′,5,5′-tetramethylbenzidine (TMB) to a blue product (oxTMB) with absorption peak at 652 nm, which further can be reduced by GSH to colorless TMB. Thus, the colorimetric detection of GSH was achieved with LOD of 3.78 μM. The recoveries of the two methods for detecting GSH in fruits and vegetables were found to be 89.67–106.32 % with RSDs as low as 0.6 % (fluorescence) and 1.2 % (colorimetric), respectively.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Lixian Wang,Lizhi Zhao,Xianglong Xiao,Xiaofu Wang,Jiayi Cao,Hui Ye,Hong Li,Yuzhong Zhang
Wastewater discharged from the textile industry contains large amounts of dyes and salts, causing serious pollution to the environment. Loose nanofiltration (LNF) membranes offer a promising solution for dye/salt separation. However, membrane fouling is a critical issue affecting the membrane performance. Here, polyether amine (PEA) is used as the aqueous monomer for interfacial polymerization to prepare a polyamide (PA) LNF membrane, and peroxidase-like Cu-FeTCPP nanosheets are embedded into the PA layer to develop the Nanozyme@PA membrane. The nanozyme-incorporated membrane has a thinner and enhanced porous active layer than PA membrane, resulting in higher water permeance (maximum of 80.7 L·m −2 ·h −2 ·bar −1 ), notable rejection of dyes (CR, >99.2 %) but low rejection of inorganic ions (NaCl, <6.4 %). The optimum dye/salt separation factor of Nanozyme@PA reaches 218.7. The loaded nanozyme can catalyze the degradation of dyes adsorbed on the membrane surface in the presence of hydrogen peroxide within 10 min, without the need for special operation, enabling the recovery of water permeance. This nanozyme functionalized LNF membrane with good permeability, selectivity and self-cleaning offers an efficient approach to dye wastewater treatment as well as an insight for membrane fabrication assisted by two-dimensional nanozyme.
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Ziyang Xu,Ying Shen,Liang Chen,Chunbo Wang
Direct CO2 hydrogenation from primary carbon sources such as flue gas offers an attractive route for carbon-neutral fuel synthesis, yet the presence of O2 severely impairs catalyst performance due to preferential H2–O2 reactions and subsequent catalyst deactivation. Herein, we report a surface-engineered Ni/γ-Al2O3 (Ni/A) catalyst modified by Cu doping (Ni–Cu1/A), which exhibits enhanced oxygen resistance and sustained CH4 produce under oxidative conditions. Guided by a descriptor τ, defined as the ratio of O2 to CO2 adsorption energies, Cu was identified as an effective dopant to suppress O2 adsorption while preserving CO2 activation. Under a challenging atmosphere containing 6% O2, the optimized Ni–Cu1/A catalyst achieved a CH4 STY of 76.4 mmol gcat–1 h–1, significantly outperforming the undoped Ni/A catalyst, which drops to 63.1 mmol gcat–1 h–1 under the same conditions. Mechanistic analysis reveals that Cu incorporation weakens O2 adsorption by regulation of electronic structure, thereby mitigating exothermic H2–O2 side reactions and stabilizing Ni0 sites. This work presents a practical and scalable strategy for CO2 methanation in the presence of O2, offering a promising approach for direct catalytic conversion of flue gas by leveraging selective surface adsorption and electronic structure modulation.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Yao Ji,Tiangang Ma,Xianwang Yang,Renshuo Wang,Ke Wang,Xiyu Liu,Xiaolong Wang,Quan Jin
SO 2 sensors generally face challenges such as gas corrosion, poor selectivity, competition from water molecules, and high recovery costs. Metal-organic frameworks (MOFs), which offer excellent chemical stability, structural diversity, and low-cost reactivation, have emerged as ideal candidates for sensing materials. However, MOFs typically exhibit poor conductivity, making them unsuitable for traditional gas detection devices. In order to solve this problem, in this study, SIFSIX-1-Cu with directionally ordered interconnected nanochannels was synthesized. By optimizing the synergistic effects of mass transfer, chemical recognition and pore-size sieving, the performance limitations of traditional adsorption materials have been overcome. Furthermore, by integrating SIFSIX-1-Cu with a microwave circuit, the microwave gas sensor (MGS) detects target gases by monitoring changes in the electromagnetic properties—such as dielectric constant or resonance frequency—of the sensing material induced by gas adsorption. The unique detection mechanism allows the MOFs to operate without the need for conductivity optimization, effectively preventing the loss of active sites during the material modification process. The results showed that SIFSIX-1-Cu microwave gas sensor has a low limit of detection of 8.9 ppb at room temperature, and can achieve high selectivity (selectivity coefficient SO 2 /CO 2 > 11.87) detection of SO 2 in a wide concentration detection range of 10 ppb to 1000 ppm. Meanwhile, the sensor also exhibits excellent moisture resistance and repeatability.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CATALYSIS LETTERS
·
2025
·Vol. 155
·期 9
·1-12
·
IF 2.4
Zhong Yuhang,Xu Hui,Li Zhiguo,Zhang Yuqi,Hou Jianyuan,Yuan Yuan,Liu Xingang,Zhang Renxi
This study demonstrates an innovative approach for green and efficient hydrogen production from seawater, utilizing Cu–Fe/Al 2 O 3 catalysts coupled with a dielectric barrier discharge (DBD) system. The catalytic performance was systematically evaluated under varying voltages and Cu/Fe ratios in a DBD reactor to optimize hydrogen production efficiency. Subsequent investigations focused on humidity and gas flow rate effects using the optimal catalyst (Cu/Fe/Al 2 O 3 = 2:1:9). Multimodal characterization (XRD, XPS, FTIR, OES) combined with DFT calculations revealed the mechanistic role of Cu–Fe/Al 2 O 3 in plasma-driven hydrogen generation. The synergistic interaction between Fe and Cu enhanced hydroxyl/hydrogen radical generation through improved adsorption, thereby boosting hydrogen evolution efficiency and yield. The optimized system achieved a maximum hydrogen yield of 7.4 g/kWh at 3 kV operating voltage, 3 L/min argon flow, and 100% relative humidity, establishing an energy-efficient pathway for sustainable hydrogen production from seawater. Graphical
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2022
·
IF 18.027
Yujun Zhang,Shenghua Ye,Min Gao,Yong Li,Xuan Huang,Jun Song,Hong Cai,Qianling Zhang,Junmin Zhang
Heterogenization of homogeneous catalysis through supported single-atom catalysts (SACs) provided a feasible solution to recycling catalysts while keeping its efficiency in chemical synthesis. In this work, Cu SACs anchored on N-doped graphene (Cu SACs/NG) were prepared and first used for C–N coupling reactions. During the preparation, Cu–N–C structures, including Cu–N4 moieties, were formed in a one-step pyrolysis method. As-prepared Cu SACs/NG exhibited excellent catalytic activity toward C–N coupling reactions with a broad scope of substrates and showed outstanding performance of recycling. Compared with Cu nanoparticles (Cu NPs/NG), the advantages of single-atom catalysts were validated via experimental and theoretical calculations. The enhanced performances were attributed to increasing the number of active sites and increasing the intrinsic activity of each active site. This work provides an alternative synthetic strategy for fabricating atomically dispersed SACs and represents a significant advance for coupling reactions.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）