JOURNAL OF THE CHINESE CHEMICAL SOCIETY
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2017
·Vol. 64
·期 4
·412-419
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IF 0.935
Xiu-Yan Dong,Sunday Folaranmi Akogun,Wei-Min Zhou,Wen-Kui Dong
A new tetranuclear Zn(II) complex, [{Zn(L)(μ-OAc)Zn(H 2 O)} 2 ], based on an asymmetrical salamo-type bisoxime chelating ligand H 3 L (6-hydroxy-4′-chloro-2,2′-[ethylenediyldioxybis(nitrilomethylidyne)]diphenol) was synthesized and characterized by elemental analyses, differential thermal methods, single-crystal X-ray crystallography, and IR, UV–vis, and fluorescence spectra. The Zn(II) complex crystallizes in the triclinic system, space group P -1 with cell parameters a = 9.0742(6) Å, b = 11.8225(5) Å, c = 12.4182(8) Å, Z = 2, V = 1212.56(12) Å 3 , R 1 = 0.0572, and wR 2 = 0.1734. The environment of the tetranuclear Zn(II) complex is penta-coordinated having a slightly distorted trigonal bipyramidal geometry. Moreover, a 1D chain supramolecular structure is formed along the c -axis by the intermolecular C1–H1B⋯O14 hydrogen bonds; in the same manner, C2–H2C⋯Cg2 functions in the formation of supramolecular structures along the a -axis of the 1D chain. A 2D supramolecular structure along the ac plane extends infinitely under the force of intermolecular hydrogen bonds. Differential scanning calorimetry-thermogravimetry thermal analysis provides evidence of the coordination of Zn(II) atoms to the ligand H 3 L. The Zn(II) complex shows intense photoluminescence with a maximum emission at ~453 nm upon excitation at 360 nm.
研究领域:
无机化学
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配位化学
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超分子化学
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材料化学
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分析化学
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物理化学
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晶体学
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DOI
高影响因子
JOURNAL OF CATALYSIS
·
2021
·
IF 7.92
Wei She,Jing Wang,Xuewei Li,Jingfang Li,Guijie Mao,Weizuo Li,Guangming Li
One-pot direct synthesis of imines via reductive amination of nitroarenes with aromatic aldehydes remains a great challenge due in part to its over-hydrogenation of imines to secondary amines. Herein, a novel Co 3 ZnC and ZnO supported on N-doped carbon nanosheet catalyst with the thickness of ca. 5.0 nm was fabricated through the direct pyrolysis of a Co/Zn bimetallic MOFs at 500 °C (named as Co 3 ZnC-ZnO/NC-500). Surprisingly, the developed Co 3 ZnC-ZnO/NC-500 catalyst delivers 99.9 % conversion of nitrobenzene and 98.5 % selectivity to N -benzylideneaniline in one-pot reductive amination of nitrobenzene with benzaldehyde. Various characterizations (including as SEM, XRD, TEM, AFM, XPS, Raman and N 2 adsorption–desorption) have revealed that the generated small size of Co 3 ZnC alloy, abundant structural defects, larger specific surface area (105.5 m 2 ·g −1 ) as well as more basic sites are responsible for the outstanding catalytic activity of Co 3 ZnC-ZnO/NC-500 catalyst for tandem reaction. Moreover, the Co 3 ZnC-ZnO/NC-500 catalyst exhibits high stability during the recycling experiments without the loss of its catalytic activity. Notably, the results of contrast experiments have demonstrated that the intentional introduction of ZnO in Co 3 ZnC-ZnO/NC-500 catalyst plays a key role in the selectivity to N -benzylideneaniline in the tandem reaction. This study provides a new guideline for designing tandem catalysts with high selectivity.
研究领域:
材料化学
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多相催化
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有机合成
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纳米材料
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金属有机框架（MOFs）
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Zhuzhu Du,Kai Yang,Hongfang Du,Boxin Li,Ke Wang,Song He,Tingfeng Wang,Wei Ai
CuO has been regarded as a promising catalyst for the electrochemical reduction of nitrate (NO3–RR) to ammonium (NH3); however, the intrinsic activity is greatly restricted by its poor electrical property. In this work, self-supported Zn-doped CuO nanosheet arrays (Zn–CuO NAs) are synthesized for NO3–RR, where the Zn dopant regulates the electronic structure of CuO to significantly accelerate the interfacial charge transfer and inner electron transport kinetics. The Zn–CuO NAs are constructed by a one-step etching of commercial brass (Cu64Zn36 alloy) in 0.1 M NaOH solution, which experiences a corrosion–oxidation–reconstruction process. Initially, the brass undergoes a dealloying procedure to produce nanosized Cu, which is immediately oxidized to the Cu2O unit with a low valence state. Subsequently, Cu2O is further oxidized to the CuO unit and reconstructed into nanosheets with the coprecipitation of Zn2+. For NO3–RR, Zn–CuO NAs show a high NH3 production rate of 945.1 μg h–1 cm–2 and a Faradaic efficiency of up to 95.6% at −0.7 V in 0.1 M Na2SO4 electrolyte with 0.01 M NaNO3, which outperforms the majority of the state-of-the-art catalysts. The present work offers a facile yet very efficient strategy for the scale-up synthesis of Zn–CuO NAs for high-performance NH3 production from NO3–RR.
研究领域:
电催化
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环境修复
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材料科学
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可持续化学
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能量转换
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DOI
高影响因子
Small
·
2026
·
IF 12.1
Jia Liang,Ye Zeng,Hai Huang,Dingrong Deng,Guifang Li,Xiaohong Fan,Mingming Tao,Binbin Wei,Zhengbing Qi,Hanfeng Liang,Qihui Wu
Surface reconstruction of electrocatalysts induces structural evolution, which critically creates favorable conditions for in situ directional modulation of electrocatalytic species and thus enhances the catalytic activity. The development of CoMoO 4 -based electrocatalysts for hydrogen evolution reaction (HER) is hindered by insufficient active sites and sluggish reaction kinetics of reconstructed cobalt species. Herein, we rationally designed a CoMoO 4 pre-catalyst loaded on ZnO nanorods, where synergistic structural evolution between ZnO and CoMoO 4 is achieved: continuous ZnO dissolution couples with CoMoO 4 structural evolution, driving Zn incorporation into in-situ generated Co(OH) 2 species. The reconstructed electrocatalyst with Zn-doped Co(OH) 2 as catalytic species can exhibit a low HER overpotential of 40 mV at 10 mA cm − 2 , and maintain an overpotential of 65 mV at 10 mA cm − 2 in simulative seawater electrolyte. Meanwhile, the anion exchange membrane (AEM) electrolyzer with the reconstructed ZnO@CoMoO 4 electrode can exhibit excellent durability, maintaining electrocatalytic performance for 650 h (water electrolysis) and 1000 h (seawater electrolysis). Density functional theoretical (DFT) calculations demonstrate that the Zn dopants in the reconstructed species effectively enhance the HER energetics and mitigate Cl − -induced corrosion during the seawater electrolysis. This work provides fresh insights into the enhancement of the HER activity of reconstructed electrocatalysts based on the structural co-evolution mechanism.
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 8.2
Heng Jiang,Jiahao Wang,Siyu Gui,Sensen Niu,Guangzheng Lin,Hui Yuan,Yongqi Wu,Chuhan Zhou,Jingjing Tang,Qiao Mei,Lianbang Zhou
Gastric cancer (GC) remains one of the leading causes of cancer-related mortality worldwide, presenting significant therapeutic challenges due to its late-stage diagnosis and high metastatic potential. Imbalance in reactive oxygen species (ROS) homeostasis is crucial for the onset, development, and malignant transformation of GC. To address the demand for innovative therapeutic approaches, this study introduces a novel nanocoordination polymer, Zn-Quer nanozymes (NZs), synthesized from quercetin (Quer) and zinc ions. These nanoparticles utilize quercetin’s anti-inflammatory and antioxidant properties, improving its bioavailability and therapeutic effectiveness via a nanoparticle delivery system. Zn-Quer NZs were synthesized via coordination chemistry and characterized by using TEM, XRD, and FTIR to confirm their structural integrity and composition. In vitro studies on GC cell lines and in vivo xenograft model experiments demonstrate that Zn-Quer NZs effectively inhibit cell proliferation, induce apoptosis, and reprogram malignant phenotypes such as epithelial-mesenchymal transition (EMT) and angiogenesis, as indicated by changes in the expression of related markers. Moreover, Zn-Quer NZs significantly reduce the overall intracellular ROS levels in epithelial cells under oxidative stress by modulating multiple steps of ROS generation. These findings underscore Zn-Quer NZs as a promising therapeutic strategy for gastric cancer, capable of rebalancing ROS and effectively reversing malignant phenotypic transformation.
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DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2026
·
IF 19.9
Yue Han,Jiabao Dai,Qi Li,Yufeng Zheng,Peng Wen,Dandan Xia,Yongsheng Zhou
Recurrent infections and persistent inflammation pose significant challenges in the clinical treatment of infected bone defects. Here, a porous scaffold of Zn-0.8Li-0.5Ag with a TPMS-Gyroid structure was fabricated by laser powder bed fusion (LPBF) for the treatment of infected bone defects, integrating mechanical performance, anti-infective properties, and osteogenic requirements. In vitro, Zn-0.8Li-0.5Ag scaffold exhibits potent bactericidal property against Staphylococcus aureus ( S. aureus ) and Escherichia coli ( E. coli ), excellent anti-inflammatory property through immunomodulation, and acceptable osteogenesis property by enhancing the expression of osteogenesis-related genes. In vivo, the Zn-0.8Li-0.5Ag scaffold significantly suppresses pathogenic bacteria, alleviates local inflammation, and promotes tissue regeneration. RNA sequencing further elucidated that the Zn-0.8Li-0.5Ag scaffold exerted anti-inflammatory effects by releasing Zn 2 + , Li + , and Ag + , which downregulated Gbp2 expression, thereby inhibiting inflammatory pathways. Collectively, the Zn-0.8Li-0.5Ag scaffold with antibacterial, anti-inflammatory, and osteogenic effects holds great promise as a promising biomaterial for repairing infectious bone defects.
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高影响因子
CHEMICAL ENGINEERING SCIENCE
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2026
·
IF 5.1
Jiejun Ye,Aqiang Chu,Yidan Zhou,Yan Xu,Shenxiang Zhang
Zinc-chlorine (Zn-Cl 2 ) battery with high discharge voltage, attractive theoretical energy density and inherently low-cost active materials provides affordable and scalable solutions for stationary energy storage. However, the Zn-Cl 2 battery suffers from rapid capacity decay and low coulombic efficiency (CE), primarily due to uncontrolled overflow of Cl 2 gas from the electrolyte. Solvents with high chlorine solubility like CCl 4 combine high chlorine storage capacity, delivering a theoretical volumetric capacity of up to 97 Ah L −1 , but at the cost of suffering from water-oil interfacial instability. In this work, we designed a wettability-tailored membrane electrode with CNT and Pt nanoparticle that stabilizes the two-phase interface and exhibits electrocatalytic activity. Moreover, leveraging the abundant and low-cost chloride in seawater, we replace deionized water with seawater. When using a seawater-based electrolyte, the Zn-Cl 2 flow battery delivers 600 stable cycles (over 220 h) with an average CE of 88.37%. Notably, it maintains 1420 stable cycles (over 544 h) at 0 °C, accompanied by an average CE of 91.94% and a capacity retention of 94.1%. This work establishes a new paradigm for the design of interface regulation strategies in Zn-Cl 2 flow batteries, providing a feasible approach for high-capacity, seawater-based energy storage systems suitable for coastal low-temperature applications.
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DOI
高影响因子
Journal of Energy Storage
·
2026
·
IF 10.7
Xiao Jing,Jiaheng Wang,Wei Wang,Jiarui Li,Bo Wu,Yu Sun,Jiaxu Gong,Yatang Dai
Zn-doped V 2 O 5 /NH 4 V 4 O 10 heterojunction in-situ constructed on carbon cloth. • Electronic mismatch drives interfacial charge rearrangement and coupling. • Heterointerface boosts Zn 2+ kinetics and suppresses V dissolution to prevent degradation. • Heterostructure cathode delivers high capacity and ultra-stable cycle life. Layered vanadium-based heterojunctions and cation pre-intercalation serve as effective strategies to address sluggish ion diffusion and inferior structural stability of aqueous zinc-ion batteries. Herein, hierarchical Zn-doped V 2 O 5 /NH 4 V 4 O 10 heterojunction is in-situ grown on carbon cloth via two-step hydrothermal treatment. The fabricated heterojunction accelerates Zn 2+ migration and eliminates discharge kinetic limitations of pristine cathode materials. It also restrains Jahn-Teller distortion to mitigate lattice degradation and improve structural reversibility. Benefiting from structural and interfacial advantages, the obtained cathode delivers a high specific capacity of 523.8 mA h g −1 , outstanding rate performance and 72.4% capacity retention over 3000 cycles at 3 A g −1 . It maintains 171.4 mA h g −1 at 5 A g −1 and exhibits 96.37% capacity recovery after current adjustment. This work offers a promising interfacial engineering route for advanced aqueous zinc-ion battery cathodes and expands the application prospect of vanadium-based layered heterostructures.
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DOI
高影响因子
ENERGY & FUELS
·
2025
·
IF 5.3
Shixue Zhong,Yan Xin,Ming Lei,Shen Cai,Chen Zhao,Huai Zhang,Huajun Tian
Manganese dioxide (MnO2) is a promising cathode material for aqueous zinc-ion batteries (AZIBs) due to its considerable theoretical capacity, discharge voltage, high safety, and eco-friendliness. Here, a MnO2 composite with carbon materials was synthesized via a simple one-step precipitation method. The minor addition of carbon material significantly increases the yield of MnO2, which facilitates practical application in aqueous batteries. More importantly, during the precipitation process, the carbon material additive could regulate the growth morphologies of MnO2, contributing to increased specific surface area and alleviative Jahn–Teller distortion. Meanwhile, the incorporation of carbon materials improved the electrical conductivity, enhancing the electrochemical performance of the MnO2 composite. As a result, by employing the optimized cathode (MnO2@CNT), the full battery exhibits excellent specific capacity and maintains a stable cycling performance for over 1000 cycles at 3 C. Furthermore, its potential as a cathode material in sodium metal batteries is also demonstrated. This work provides a strategy for the practical utilization of MnO2 cathodes for AZIBs and contributes to realizing high-performance eco-friendly batteries.
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产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2016
·
IF 4.758
Juan Hou,Tianyu Zhou,Long Wang,Ping Zhang,Lan Ding
In this work, Zn(OH) 2 nanosheets embedded with carbon dots (CDs) were prepared through a template-free microwave-assisted route for the first time. The preparative strategy was facile, green and cost-effective. The final composites possessed uniform size distribution, good fluorescence property, excellent stability and fast adsorption ability for metal ions. A novel and ultrasensitive fluorescent assay has been proposed using CDs/Zn(OH) 2 composites as amplifying fluorescent sensors for rapid detection of Cu 2+ and Hg 2+ in real water samples. Aided by a Cu 2+ /Hg 2+ chelating agent, exclusive detection could be expected without cross-reactivity, as well as reversible and reproduced analysis. The detection limits were 0.3 nM for Cu 2+ and 0.2 nM for Hg 2+ , respectively. This assay could effectively enrich/separate and detect Hg 2+ and Cu 2+ simultaneously, revealing remarkable advantages including operational simplicity, high sensitivity, low cost and acceptable reproducibility.
研究领域:
材料科学
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分析化学
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环境科学
·
纳米技术
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DOI
高影响因子
FUEL PROCESSING TECHNOLOGY
·
2023
·
IF 7.5
Yuxiang Mao,Jun Cheng,Hao Guo,Lei Qian,Yang Shao,Jiacan Tu,Weijuan Yang
In order to enhance acid-base active sites and their utilization efficiency to efficiently convert microalgal lipids into biodiesel , an acid-base catalyst was synthesized through pyrolyzing Zn Co bimetallic zeolitic imidazolate frameworks (ZIFs). Pyrolysis destroyed saturated coordinated metal-N 4 sites in ZIFs and produced more unsaturated metal-N x and metal nanoparticles , which enhanced Lewis acidity. The increased pyridinic N and unsaturated metal-N x promoted Lewis basicity . Meanwhile, Zn doping reduced sizes of catalyst crystals and metal nanoparticles, which improved utilization efficiency of active sites. Hence, compared with pyrolyzed ZIF-67, the acidity of optimal catalyst increased from 0.205 to 1.535 mmol/g, whereas basicity increased from 0.069 to 0.405 mmol/g. DFT calculations revealed that catalytic performances of metal nanoparticles and unsaturated metal-N x were better than that of saturated metal-N 4 . Therefore, the catalytic efficiency of C-Zn/Co-ZIF = 4 (molar ratio of Zn to Co was 4) catalyst was highest at 96.2%, because of the minimal catalyst crystals and metal nanoparticles.
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产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2023
·
IF 9.2
Chuanyong Liu,Liang Wang,Zhaopeng Xia,Wan Shou,Yong Liu
Zn-ion hybrid capacitors (ZICs) recently receive an extensive attention owning to their theoretical energy density as well as high safety. Hollow porous carbon fibers (HPCF) are used as a promising cathode for ZICs due to abundant active sites. However, it is hard to deal with the “trade-off” between defect design and graphitic degree in HPCF electrode. In this work, hollow porous carbon fiber (HPCF) cathodes are prepared via a spinning-co-foaming technique, followed by zinc oxide nanoparticles as template and activation process . The aligned channels and hierarchical cavities in HPCF wall provide a high-speed diffusion path for electrolyte penetration via capillary force . Meanwhile, due to higher exposed surface area and metal-catalytic effect of reduce zinc during pyrolysis , self-standing ZHPCF-5 exhibits a good graphitic degree (I D /I G = 0.84). Its high electrical conductivity (158.3 S m −1 ) provides fast electron transport . The optimized ZHPCF-5 cathode displays a capacity of 220 mAh g −1 at 0.2 A g −1 and an energy density of 224 Wh kg −1 at a 14400 W kg −1 of power density. The assembled quasi-solid-state self-standing ZIC exhibits a high capacity (153.5 mAh g −1 at 0.5 A g −1 ). This work finds a way to simultaneously maintain abundant defects and high electric conductivity in self-standing carbon electrode for boosting Zn 2+ storage.
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高影响因子
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