NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 45
·期 14
·6543-6549
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IF 3.591
Ziqi Zhang,Xiang Ni,Kaida Yao,Siqi Zhang,Yang Liu,Yueqiu Sun,Xiangzhi Wang,Weimin Huang,Yan Zhang
Titanium has been applied to implants over the last decades due to its excellent biocompatibility and mechanical properties. However, there are still some drawbacks for titanium and its alloys to overcome. Thus, in this study, a novel electrochemical synthesis process has been developed to fabricate TiO2 nanotube array, hydroxyapatite and rare-earth (La3+) doped ZIF-8 nanoparticle composite coating, which can enhance the antibacterial and anti-corrosion property on the premise of minimizing the biocompatibility loss of titanium implants. Compared with traditional processing methods, electrochemical machining is more time-saving, energy-saving and environment-friendly. Thus, it provides an alternative way to produce medical implants.
研究领域:
生物材料学
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医学工程
·
电化学
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2021
·
IF 4.539
Rongchuang Geng,Hanxiao Tang,Qiujuan Ma,Luping Liu,Weisheng Feng,Zhijuan Zhang
In this work, a series of bimetallic Ag/Zn-ZIF-8 materials were successfully developed for sensing toward traces of Fe 3+ and Cu 2+ . The bimetallic Ag/Zn-ZIF-8 was synthesized via a one-pot method. Interestingly, this obtained bimetal Ag/Zn-ZIF-8 exhibited high photoluminescence property and excellent fluorescence quenching response to target analytes with high selectivity , sensitivity and detection limits of 3.9 μM for Fe 3+ , 6.7 μM for Cu 2+ ions, respectively, both of which have been confirmed to be very comparable or better than the reported LMOFs sensors. The possible photoluminescence quenching mechanisms were studied in detail, revealing that the competitive absorption of excitation source and resonance energy transfer (RET) resulted from the host (imidazole of the framework, Lewis basic sites)-guest (metal ions of Cu 2+ and Fe 3+ , Lewis acid sites) interaction should be responsible for high efficiency fluorescence quenching. The binding energies of metal ions adsorption on the ZIF-8 obtained by DFT simulation were further performed to explain the higher quenching effect of Fe 3+ than Cu 2+ .
研究领域:
材料科学
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分析化学
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纳米技术
✓ 已验证
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2021
·
IF 6.558
Sujuan Hu,Yongqi Wei,Jiao Wang,Yingjian Yu
Electroanalysis is an effective monitoring method for organic pollution in environmental samples. However, chemical fouling with the formation of non-conductive fouled films easily occurs on the surface of the electrode during organic pollution detection that would inactivate the electrode and affect the detecting sensitivity of organic pollution. In this work, we found that zeolitic imidazolate framework-8 (ZIF-8) electrode can achieve effective degradation of non-conductive fouled films under the light illumination during electrochemical detection of some typical organic pollution (sulfamethoxazole (SMX), Bisphenol A (BPA) and diclofenac sodium (DS)). Profiting from the charge transfer capability and photoelectric characteristics, ZIF-8 electrode exhibits a lower detection limitation for organic pollution detection and superior regeneration property. The nice detection and superior regenerated property are mainly due to non-selective superoxide radical (·O 2 − ) and hydroxyl radicals (·OH) mediation produced by ZIF-8 electrode under light illumination that can mineralize anodic fouled products and resume surface reactive sites. Compared with the single electrochemical determination, photo-assisted electroanalysis provides a stable monitoring and a renewable pathway for practical applications.
研究领域:
环境科学
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分析化学
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Yuanshu Weng,Jiannan Li,Dongna Xie,Song Peng,Ying Wen,Jiale Wan,Dong Ma,Guowei Li,Wu Zhang
Periodontitis is initiated by bacterial biofilms, and the removal of plaque is critical in preventing the onset and progression of periodontal diseases, including gingival inflammation, periodontitis, and even alveolar bone resorption. Clinically, mechanical methods are commonly used to remove plaque and calculus. However, conventional methods struggle to access certain regions, such as deep periodontal pockets, root furcations, and dentinal tubules. In these cases, antimicrobial agents are required to eradicate residual pathogenic microorganisms. This study designed a dextran-coated ZIF-8-based composite material (Ce6@ZIF-8/Dex) to enhance biofilm penetration and photodynamic antibacterial efficacy against periodontal pathogens. The photosensitizer, chlorin e6 (Ce6), synergizes with zinc ions (Zn2+) from the zeolitic imidazolate framework 8 (ZIF-8) to achieve a combined antibacterial effect and reduce bacterial resistance to single antimicrobial agents. Dextran modification further improves the biofilm penetration capability of the ZIF-8 composite, enhancing its overall antibacterial efficiency. In vivo, Ce6@ZIF-8/Dex demonstrated excellent biocompatibility and antibacterial activity against Porphyromonas gingivalis and Streptococcus mutans. This study presents a promising antibacterial strategy for the prevention and treatment of periodontitis.
研究领域:
纳米技术
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材料科学
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生物医学工程
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微生物学
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牙科学
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药剂学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2024
·Vol. 59
·期 4
·1621-1634
·
IF 3.5
Li Yangsong,Zhao Xiaoyan,Fan Liya,Zhu Xiao,Cui Zhaoliang
Polylactic acid/ZIF-8 composite membranes were prepared by polylactic acid (PLA) electrospun fibers and zeolitic imidazolate framework-8 (ZIF-8). In order to adhere inorganic particles to the fiber membrane effectively, water-soluble polyvinyl alcohol (PVA) was mixed with ZIF-8 and scraped onto the PLA fiber membrane. Furthermore, the samples were treated by steam for obtaining the rich pore structures. The coating amount of ZIF-8 and the steam treatment time of the composite membrane were determined by evaluating the adsorption performance of the acid dye. The optimal PLA/ZIF-8 membrane was selected for antibiotics adsorption testing at different temperatures. The results showed that the stable and maximum adsorption capacities of tetracycline hydrochloride (TC) and oxytetracycline (OTC) were 90.92 and 69.64 mg/g at 60 °C, respectively. The adsorption processes of the two antibiotics were in accord with the second-order kinetic models. This work provided a technology for developing the porous membranes in water treatment.
研究领域:
材料科学
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环境工程
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纳米技术
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化学工程
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2019
·
IF 5.107
Zhihao Si,Di Cai,Shufeng Li,Guozhen Li,Ze Wang,Peiyong Qin
The diffusion process is the rate-limiting step for n -butanol recovery from diluted aqueous solution, which can be improved by incorporating hydrophobic nanoparticle into the polymer matrix. However, the micropore structure of zeolitic imidazolate framework-8 (ZIF-8) in the commonly applied ZIF-8-based mixed matrix membrane (MMM) could hardly meet the diffusion demand of the penetrant molecules. Herein, ZIF-8-derived nanoporous carbon (ZNC) with larger pore diameter and pore volume was prepared to replace ZIF-8 in conventional MMM in order to improve the diffusion process. An increase of 68.7% in n -butanol permeability of ZNC/PDMS MMM with 3 wt% of particle loading was obtained compared with ZIF-8/PDMS MMM. Coupled with the good compatibility between ZNC and PDMS , ZNC was homogeneously dispersed in PDMS matrix. As a result, a n -butanol permeability of 109,583 Barrer and a n -butanol/water selectivity of 4.47 were obtained for n -butanol recovery from 1.5 wt% n -butanol/water solution at 55 °C, which were increased by 145.4% and 17.6%, respectively, compared with the pure PDMS membrane. Overall, the ZNC-filled PDMS membrane shows promising in effective separation of n -butanol in realistic applications.
研究领域:
化学工程
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材料科学
✓ 已验证
DOI
高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Lingling Li,Zihao Lv,Hao Jiang,Xiaoxian Zhao,Lan Wu,Xiuming Cao,Helan Xu,Qufu Wei,Qingqing Wang
A pH-responsive bacterial cellulose (BC)-based composite nanofiber membrane functionalized with rose bengal (RB)-encapsulated ZIF-8 (BC/RB@ZIF-8) was developed via in situ growth for the targeted therapy of bacterial stomatitis. The BC film enhanced the photodynamic effect, addressing the challenges of photosensitizer aggregation-induced quenching and its reuse. The BC/RB@ZIF-8 nanofiber membrane demonstrated sustained photodynamic activity, maintaining a stable singlet oxygen (1O2) quantum yield under continuous 130 min irradiation. The nanofiber membrane exhibited robust mechanical properties, including a tensile strength greater than 33 MPa, high water absorption capacity (916.61 ± 4.7%), and optimal moisture vapor transmission rate (40.56 ± 1.37 g/m2·h), meeting the key requirements for oral wound dressings. In acidic infection microenvironments, ZIF-8 degradation facilitated the synchronized release of Zn2+ and RB, leading to dual-mode antibacterial action: (1) the continuous release of Zn2+ from ZIF-8 disrupts bacterial cell membranes through electrostatic interactions; and (2) ROS generation via Type I (•OH) and Type II (1O2) pathways, resulting in irreversible damage to bacterial cell membranes and components. This synergistic mechanism led to a 99.99% eradication of S. aureus and MRSA under acidic conditions, outperforming conventional therapies. Cytocompatibility and hemocompatibility were confirmed in accordance with ISO 10993 standards. The BC/RB@ZIF-8 nanofiber membrane represents a significant advancement in pH-responsive antibacterial materials, offering a promising alternative to antibiotic-based treatments for biofilm-infected oral wounds.
研究领域:
生物材料学
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医学
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2024
·
IF 20.2
Yingdong Hao,Yonghui Zhao,Chunlai Zhang,Xinqing Chen,Nannan Sun,Wei Wei
Achieving a high yield of oxygenates and inhibiting overoxidation remain challenging for CH 4 photooxidation. Here, we report a catalyst with enriched Ag-ZnO interfaces by using ZIF-8 as the precursor. The resulting Ag/Z-450 photocatalysts show extraordinary efficiency in the photocatalytic oxidation of CH 4 , a high liquid oxygenate yield of 57.88 mmol·g cat −1 (28.94 mmol·g cat −1 ·h −1 ) and a selectivity of ∼100 % were obtained over 3.0Ag/Z-450, with HCHO as the major product (41.04 mmol·g cat −1 , ∼71 % selectivity). Mechanistic studies revealed that ZnO and Ag species acted as electron donors and acceptors, respectively, which enhanced charge carriers transfer and separation. CH 4 and O 2 can be effectively activated to generate •CH 3 and reactive oxygen species (ROS), their following reaction led to formation of CH 3 OOH, which can be further converted to CH 3 OH and HCHO. This work contributes to the development of a “two-in-one” CH 4 photooxidation catalyst system that simultaneously achieves unparallel productivity and selectivity.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Wei Wang,Ruibo Wei,Qinghan Zhu,Ziming Fu,Ruixia Zhong,Haiwang Wang,Jian Qi
The greenhouse effect caused by direct emissions of lean methane from coal mining is 25 times greater than that of CO 2 . To reduce the methane content in the atmosphere, it is imperative to develop high-activity, stable, and low cost methane-catalyzed combustion catalysts. In this work, a series of Mn-doped Co 3 O 4 hollow nanocages with dodecahedral shape were prepared using the metal-organic framework (MOF) material ZIF-67 as a template, combined with an in-situ growth method and a high-temperature calcination process. The optimized hollow structure Mn 0.6 /Co 3 O 4 -H (T 90 = 302 °C) exhibited higher catalytic activity than the solid structure Mn 0.6 /Co 3 O 4 -S (T 90 = 387 °C). On the one hand, Mn 0.6 /Co 3 O 4 -H has abundant O ads /O latt (0.61) and high Co 3+ /Co 2+ (1.11) content, which increases the adsorption of reactive molecules. In addition, the adsorption of methane by the Mn 0.6 /Co 3 O 4 -H catalyst reached 0.77 cm 3 /g at 273 K, increasing the methane concentration inside the catalyst. Concurrently, the hollow structure also establishes fast mass and heat transfer channels, leading to a significant improvement in the catalytic performance. The new catalyst developed in this study provides a new perspective and insight for reducing methane emissions during coal mining and reducing its negative impact on the environment.
研究领域:
环境科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
·
2025
·
IF 5.6
Fuyan Zhang,Dilong Zhang,Xueyan Ran,Mingzhu Xiao,Lu Gan,Xiujie Yang,Yong Xie,Qi Sun
The pervasive accumulation of tetracycline (TC) in aquatic ecosystems poses severe ecological and health threats, yet conventional technologies rarely achieve reliable removal under continuous-flow conditions. To overcome the intrinsic brittleness, aggregation and leaching of powdered ZIF-67, this study developed novel alginate-encapsulated MOF composite gel spheres (ALG/ZIF-67) via in-situ crystallization. This simple strategy generates hierarchical pores, anchors Co-N active sites and imparts mechanical robustness without sacrificing adsorption kinetics. Comprehensive characterization confirmed a hierarchical porous structure with uniformly dispersed ZIF-67 nanoparticles. Batch experiments demonstrated exceptional TC adsorption (89.45 mg/g), following pseudo-second-order kinetics and the Langmuir isotherm, indicating chemisorption-driven monolayer adsorption via π–π interactions, hydrogen bonding, and coordination with unsaturated Co²⁺ sites. Fixed-bed applications showcased remarkable stability, maintaining > 80 % TC removal over 6 h with negligible ZIF-67 leaching. The alginate matrix enhanced mechanical robustness and recyclability, mitigating MOF limitations in flow systems. This work provides a scalable, eco-friendly adsorbent for antibiotic-laden wastewater, bridging laboratory innovation and industrial deployment while addressing persistent contaminant challenges.
研究领域:
环境科学
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材料科学
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化学工程
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水处理
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纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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.
研究领域:
电化学
·
材料科学
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催化
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纳米技术
·
能量转换
✓ 已验证
产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2021
·
IF 9.381
Mengge Shang,Xinen Zhang,Jing Zhang,Jinqiang Sun,Xinfu Zhao,Shimo Yu,Xiaochan Liu,Benxue Liu,Xibin Yi
Cellulose derived carbon aerogel (CA) with unique three-dimensional network coated with polyaniline (PANI) on its surface is used as a scaffolding framework to anchor ZIF-8. The designed ZIF-8 derived porous carbon (ZC)/PANI@CA (ZPCA) hybrid carbon composite through a facile solution immersion chemical route and subsequent carbonization process is employed as electrode for supercapacitor, which has contributed a large specific surface area, a hierarchical porous structure and reasonable N content (up to 6.27 at.%). The synthesized ZPCA electrode achieves an outstanding capacitance of 388 F g −1 at 0.5 A g −1 as well as an excellent cycling performance. More inspiringly, the symmetric supercapacitor based ZPCA achieves a high energy density of 13.4 Wh kg −1 at a power density of 250 W kg −1 using 2 M KOH aqueous solution, and an ultrahigh energy density of 81.8 Wh kg −1 at a power density of 950 W kg −1 is realized using Et 4 NBF 4 /AN electrolyte.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）