INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Yan Liu,Xingnian Duan,Xiaoyu Qiu,Chengjia Luo,Xixiang Liu,Jianmei Cen
Developing efficient electrocatalysts is very important for hydrogen production. These catalysts help speed up the oxygen evolution reaction (OER). This is crucial for solving energy shortages and reducing pollution. Herein, Co-doped NiMoO 4 (Co-NiMoO 4 /NF) was successfully prepared by pyrolysis of ZIF-67 via an impregnation-hydrothermal strategy and as a catalyst for oxygen evolution reaction in alkaline solutions. The nanorod-nanosheet structure of Co-NiMoO 4 /NF provides large surface area and abundant active sites, while cobalt doping modulates the electronic structure of NiMoO 4 , which is conducive to the enhancement of the electrochemical activity of catalysts. Density-functional theory calculations further demonstrated that Co-doped Co-NiMoO 4 /NF was more favorable to the adsorption and stabilization of *OOH intermediates than NiMoO 4 /NF. As a result, Co-NiMoO 4 /NF exhibits excellent OER performance with an overpotential of 199 mV at 10 mA cm −2 and remains stable after 200 h of continuous testing under current density conditions of 10 and 500 mA cm −2 . The remarkable electrocatalytic performance of Co-NiMoO 4 /NF highlights its strong potential as an efficient catalyst for sustainable energy conversion systems.
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Yipu Xu,Wenru Zhao,Rui Chen,He Li,Xinyu Liu,Peiran Wu,Hui Yu,Jiansong Wang,Liu-Liu Shen,Gui-Rong Zhang,Donghai Mei
Zeolitic imidazolate frameworks (ZIFs) are widely explored as precursors for constructing electrocatalysts for the oxygen reduction reaction (ORR). However, most studies convert these frameworks into metal-nitrogen-carbon (M-N-C) catalysts via pyrolysis, a process that often compromises their structure integrity and coordination precision. Herein, it is demonstrated that ZIF-67 can serve directly as a highly-active molecular catalyst for ORR. By applying ball-milling to enhance cobalt sites exposure, the optimized ZIF-67 exhibits exceptional ORR activity in alkaline media. Combined spectroscopic and theoretical analyses reveal that this remarkable activity stems from coordinatively unsaturated Co-N 4-x sites, which transform into Co-N 4-x (OH) moieties under reaction conditions, thereby facilitating oxygen adsorption and activation. Furthermore, mild thermal treatment (≤500 °C) enhances the proportion of Co-N 4-x sites up to 48%, as confirmed by X-ray absorption spectroscopy, achieving ORR activity rivals or even exceeds conventional pyrolyzed M-N-C catalysts. This study unlocks the potential of ZIFs as active molecular electrocatalysts upon mild thermal treatment, providing a scalable and efficient strategy for optimizing ZIFs for catalytic applications while preserving their structural precision.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Jinyu Liu,Zikang Qin,Linlin Yang,Jing Wei,Chao Feng,Bo Tang,Wenju Jiang,Lin Yang,Lu Yao,Junfeng Zheng,Zhongde Dai
Membranes based on two-dimensional (2D) materials often show great separation efficiency and therefore have great potential in the treatment of dye wastewater. However, improving the water flux of 2D material-based membranes remains a challenge. In this work, 2D ZIF-67/CNF membranes were prepared on a polyether sulfone (PES) support layer via a simple extraction filtration method. The added CNF intertwined with 2D ZIF-67 nanosheets and formed an interlocked stacked laminar flow structure, which improved both the water flux and stability of the thin-film nanocomposite (TFN) membranes. The optimized membrane showed a water flux of 357.8 L m − 2 h − 1 bar − 1 , and its rejections of four dyes (Direct Red 80, Methyl Blue, Alkali Blue 6B and Congo Red) were all above 99.8 %. Furthermore, the optimized membrane maintained a rejection of 97 % after 8 h of continuous operation, indicating that the facile mixing of nanofibers into nanosheets can be considered a promising strategy for preparing TFN membranes for dye wastewater treatment.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Wu-Di Zhang,Xiao-Ye Ge,Kang-Kang Zhao,Qiang Zhang,Fu-Hu Cao,Xingyu Guo,Chuan-Ling Zhang
Tellurides are promising anode materials for lithium-ion batteries (LIBs) because of their high electronic conductivity and energy density. However, the slow kinetics and poor structural stability lead to decreased electrochemical performance. In this work, by utilizing the interface magnetization mechanism and assembly effect, high-performance CoTe 2 nanoparticles encapsulated hierarchical N -doped porous carbon nanofibers were rationally designed and prepared (ES-CoTe 2 @NC) via facile tellurization of one-dimensional (1D) ZIF-67 nanocube assemblies. Benefiting from the synergistic effects of the unique structure and component, the ES-CoTe 2 @NC anode exhibits a high reversible capacity of 1020 mAh/g at 0.1 A/g after 200 cycles, along with excellent long-term cycling stability, retaining a capacity of 780 mAh/g at 1 A g −1 after 500 cycles. Notably, the ES-CoTe 2 @NC anode retains a remarkable capacity of 502 mAh/g even after 1000 cycles at a high current density of 5 A g −1 , highlighting its exceptional cycling stability. Besides, the Full cell coupled with LiFePO 4 cathode delivers a high reversible capacity of 151.1 mAh g −1 at 0.1 A g −1 with stable cycling performance. The kinetics analysis reveals that the ES-CoTe 2 @NC anode has high pseudocapacitive properties, high electronic conductivity, and fast Li + diffusion capability. Moreover, the ex-situ characterization clarifies the conversion reaction mechanism of ES-CoTe 2 @NC. This work provides a facile but effective way to construct high-performance CoTe 2 -based electrodes.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Surfaces and Interfaces
·
2024
·
IF 5.7
Yiqiong Yang,Jiaying Ye,Yixuan Zhai,Bingbing Yang,Mingyao Yin,Yi Xu,Jinfeng Wang,Xiaodong Zhang
In this study, we successfully synthesized ZIF-67 material on three-dimensional (3D) nickel foam (NF) substrate by co-precipitation method, and then fixed CoS x on NF by hydrothermal vulcanization method to form CoS x /NF. The optimized CoS x /NF can effectively activate peroxymonosulfate (PMS) and improve the degradation efficiency of ofloxacin (OFL). The effects of PMS dosage, reaction temperature, initial pH and co-existing ions on the degradation effect of OFL were investigated in detail. CoS x /NF (1 piece 2 × 2 cm) and PMS (1 mM) in an aqueous solution (pH = 7) degraded 85 % of OFL (20.0 mg/L) within 45 min. This favorable degradation performance is mainly attributed to the enhanced electron transfer capability introduced by the bimetallic material. In addition, CoS x /NF still maintained high degradation effect and stable structure after 5 cycles. Quenching experiments further revealed that radicals •OH and 1 O 2 play a major role in degrading OFL. In addition, the degradation pathway, ecotoxicity evaluation and degradation mechanism of OFL were comprehensively investigated. In summary, the CoS x /NF catalyst proved to be a highly efficient, stable and recyclable heterogeneous composite, and opened up the possibility of using Metal-organic framework (MOF) derivatives in fields such as wastewater treatment .
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2024
·
IF 2.6
Mou Yuhang,He Qing,He Ying,Meng Chenyao,Liu Hui,Li Liang
Supercapacitors as green energy storage devices are widely utilized in vehicle manufacturing, rail transportation, power systems, and other fields. In this study, petal-like NiO was synthesized via a one-step hydrothermal method, followed by the preparation of NiO@ZIF-67 composite electrode material at room temperature. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM) tests demonstrated that the NiO in NiO@ZIF-67 possesses a porous petal-like structure, with ZIF-67 particles uniformly growing on NiO sheets. The effect of ZIF-67 content on the electrochemical performance of NiO was investigated, and results showed that NiO@ZIF-67/1, prepared with a mass ratio of NiO to Co(NO₃)₂·6 H₂O of 1:1, exhibits the optimal electrochemical performance. The specific capacitance of NiO@ZIF-67/1 electrode material reached 188.44 F·g⁻¹ at 1 A/g. Furthermore, the symmetric supercapacitor assembled with NiO@ZIF-67 exhibited a maximum energy density of 41.76 Wh/kg at 1.4 kW/h, with a capacitance retention rate of 87.2% after 5000 cycles. Graphical abstract
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Dongxiao Lu,Jinhua Li,Zhe Wu,Lin Yuan,Wenhui Fang,Peng Zou,Li Ma,Xiaojun Wang
Colorimetric biosensors, based on enzyme-like nanomaterials, have come into the spotlight in virtue of their visual detection. Herein, a daisy-like zeolitic imidazolate framework-67/reduced grapheme oxide (ZIF-67/rGO) nanozyme with unique 3D hierarchical structures has been designed to realize visual detection of hydrogen peroxide (H 2 O 2 ) that is recognized as a strong oxidizing agent or reactive oxygen species associated with oxidative stress in biological systems. The daisy-like ZIF-67/rGO is prepared by a facile one-step liquid-phase method conducted under room temperature. The successful introduction of rGO endows the daisy-like ZIF-67/rGO nanozyme with abundant porous structure, high specific surface area, and good charge transfer capability, which significantly accelerates the adsorbability and recognition towards the substrates and the oxidation rate of TMB-H 2 O 2 reaction, and thus improving the nanozyme activity observably. It is conductive to nanozyme-modulated H 2 O 2 determination. The established colorimetric biosensor platform based on ZIF-67/rGO nanozyme exhibits remarkable sensitivity and high specificity for the application in visual detection of H 2 O 2 . The detection limit of ZIF-67/rGO-based biosensor platform is as low as 3.81 μM, which is nearly 8 times lower than that of ZIF-67-based biosensor platform. Moreover, its potential applicability as an ideal platform for colorimetric biosensors is demonstrated by testing the concentration of H 2 O 2 in milk samples, which sheds light on the promising application of the proposed biosensing system in point-of-care detection.
研究领域:
生物化学
·
纳米生物学
·
分析化学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2016
·
IF 4.803
Jing Lin,Lianshan Sun,Zhanyi Cao,Dongming Yin,Fei Liang,Yaoming Wu,Limin Wang
We describe our recent progress on a novel method to prepare Ti 1.4 V 0.6 Ni hydrogen storage alloy covered with nanostructured Co 3 O 4 by utilizing zelolitic imidazolate framework 67 (ZIF-67) as the template. Ti 1.4 V 0.6 Ni@C@Co 3 O 4 composite is prepared through a dopamine self-polymerization and a facile precipitation reaction with the subsequent thermal treatment. This specific composite structure combines the high conductivity of carbon together with the promising catalytic property of nanostructured Co 3 O 4 , therefore the enhanced electrochemical activity and stability are realized. As a result, Ti 1.4 V 0.6 Ni@C@Co 3 O 4 composite electrode possesses a capacity conservation rate of 56.1% after 300 charging/discharging cycles, remarkably larger than that of Ti 1.4 V 0.6 Ni (25.3%). Moreover, a study of the kinetics demonstrates that nanostructured Co 3 O 4 coating accelerates the charge-transfer reaction of the electrode. These results prove that coating with carbon and nanostructured Co 3 O 4 is a potential method for enhancing electrochemical hydrogen storage properties of hydrogen storage alloys.
研究领域:
材料科学
·
电化学
·
能源存储
·
金属氢化物电池
·
纳米材料
✓ 已验证
DOI
高影响因子
Separations
·
2022
·Vol. 9
·期 11
·340
·
IF 3.344
Zhimin Cai,Yutao Luo,Lu Gan
Herein, we loaded cobalt-based zeolite imidazolate frameworks, ZIF-67 (Co), onto commercial filter paper to prepare catalytic filter paper (ZFP) for the in situ degradation of bisphenol A (BPA) in water by activating peroxymonosulfate. The results showed that ZIF-67 (Co) was densely and uniformly distributed on the surface of the filter paper. The prepared ZFP could effectively degrade BPA in situ through a gravity-driven filtration process. Specifically, when the flow rate of the BPA solution passing through ZFP was lower than 10 mL/min, 0.02 mM of BPA could be completely degraded by ZFP. Furthermore, ZFP showed promising water matrix adaptability, which could provide promising BPA degradation efficiency in a wide pH range or in the existence of multiple anions. The scavenging tests demonstrated that both sulfate radical and hydroxyl radical were generated for BPA degradation, in which hydroxyl radical was the dominant active species. The ZFP also exhibited promising long-time use stability with a high mineralization rate. This study provides a novel method to prepare high-efficient catalyst paper for the in situ organic pollutant removal in water media via a prompt filtration process.Keywords:peroxymonosulfate;degradation;catalytic filter paper;zeolite imidazolate frameworks
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 4.4
Zhang Han,Xu Chun,Xu Meng,Yuan Yan,Liu Jie,Dong Yanmao,Jiang Li
Self-healing anticorrosive coatings are essential for extending the lifespan of metallic materials in aggressive environments. This study presents a novel sandwich-structured coating composed of a polydopamine (PDA) inner layer, a ZIF-67 electroplated interlayer, and MXene/CNTs fillers incorporated into a waterborne acrylic epoxy (EA) matrix. The PDA layer enhances adhesion, while the ZIF-67 interlayer functions as an active inhibitor reservoir that responds to pH changes, releasing Co 2+ and 2-methylimidazole to promote defect repassivation and self-healing. The outer MXene/CNTs layer significantly improves barrier properties by forming a tortuous path for corrosive agents and enhancing interfacial stability. Compared with single-component coatings, the sandwich-structured composite coating exhibited markedly enhanced corrosion resistance in harsh acidic environment, with an obvious increase in corrosion potential. Moreover, a high R ct value of 1.79 × 10 5 Ω cm 2 was maintained by this coating even after 30 days of service, evidencing its durable protection. Under scratched conditions, the coating exhibits efficient self-healing, recovering its impedance and repassivating defects. This work demonstrates the synergistic benefits of the PDA/ZIF-67/MXene system, offering an effective solution for long-term corrosion protection with self-healing properties, suitable for various engineering applications.
✓ 已验证
产品关联
DOI
高影响因子
ChemistrySelect
·
2026
·Vol. 11
·期 6
·e06885
·
IF 2.3
Jianming Wu,Ziqiang Xiang,Yujie Li,Jiaqi Lv,Xiangfang Peng
Microplastic pollution poses a significant threat to ecosystems and human health, necessitating efficient removal methods. In this study, a magnetic nanocomposite, Fe 3 O 4 /PSS/ZIF-67, was synthesized via a solvothermal method, utilizing poly(sodium p-styrenesulfonate) (PSS) to functionalize Fe 3 O 4 nanoparticles for the in situ growth of ZIF-67. Under ultrasound-assisted conditions, the adsorbent exhibited exceptional performance for polystyrene (PS) microplastics, achieving equilibrium within 15 min with a maximum adsorption capacity of 2816 mg/g. The adsorption process followed pseudo-first-order kinetics and the Langmuir isotherm model. Mechanistic analyses revealed that the removal was driven by synergistic effects of van der Waals forces, electrostatic interactions, hydrogen bonding, and π–π interactions. Furthermore, the Fe 3 O 4 /PSS/ZIF-67 demonstrated broad-spectrum removal capabilities for various microplastics (PP, PE, PET, PMMA, PVC, PA), organic dyes (AB 93, MB, MO, CR, CV, MG, R6G), heavy metal ions (Fe 3+ , Ni 2+ , Cu 2+ , Zn 2+ ), and antibiotics (TC, CIP), demonstrating its potential for wastewater treatment.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2026
·Vol. 40
·期 2
·e70510
·
IF 0
Haoyue Xu,Si Lu,Xiyue Feng,Yunhui Zhang,Xingru Liu,Tingting Shu,Ling Li,Yingxi Wang
Metronidazole (MNZ), a refractory nitroimidazole antibiotic, poses significant environmental risks due to its persistence in aquatic systems. In this study, a hollow-structured ZIF-67-derived CoS (ZD-CoS) catalyst was synthesized to activate peroxymonosulfate (PMS) under simulated sunlight for MNZ degradation. The ZD-CoS/PMS system achieved 91.0% MNZ removal within 10 min under light irradiation, exhibiting a kinetic rate 2.4 times faster than that in the dark, which was attributed to the photothermal effect enhancing radical generation. The mechanistic study elucidated that the degradation of MNZ was driven by the collective contribution of reactive species, namely SO 4 − ˙, ˙OH, 1 O 2 , and O 2 − ˙. This synergistic effect was primarily facilitated by the Co 2+ /Co 3+ redox cycle, which served as the core mechanism for PMS activation. Furthermore, the degradation pathways of MNZ were elucidated through LC–MS analysis, indicating processes including hydroxylation, ring cleavage, and oxidation. The catalyst also demonstrated excellent stability over four cycles with low cobalt leaching (< 0.15 mg/L). This work provides a solar-driven, catalytic solution for antibiotic wastewater treatment and offers mechanistic insight into the degradation process.
✓ 已验证
产品关联
DOI
危险品化学品经营许可证（带存储）