Journal of Bionic Engineering
·
2022
·Vol. 19
·期 2
·507-515
·
IF 2.995
Li Mingrui,Wei Yongjie,Ma Bowen,Hu Yang,Li Dongdong,Cui Xiaoqiang
The loosening of implant due to bacterial infection brings great difficulties to the implantation of bionic titanium devices. In this study, the Zeolitic Imidazolate Framework 8 (ZIF-8) and silver ions were added to the surface of titanium alloy to obtain a uniform coating, which has nice biological activity and antibacterial property. The material structure characterizations, such as X-ray diffraction (XRD), scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS), proved that titanium is successfully modified with ZIF-8 and silver ions. It has micro- and nano-level characteristics, rough porous morphology, and excellent apatite inducing ability. The water contact angle experiment shows that the addition of ZIF-8 greatly increases the hydrophilicity of material, which provides conditions for the attachment of osteoblasts. The polarization curve obtained from the electrochemical test proves that the addition of ZIF-8 coating improves the corrosion resistance of titanium. The release of silver ion has a strong growth inhibitory effect on E. coli , and exhibits excellent antibacterial properties. Therefore, the preparation of ZIF-8/Ag coatings on 3D printed titanium provides a new option for the development of orthopedic implants.
研究领域:
生物材料学
·
表面工程
·
纳米医学
·
骨科植入物
·
抗菌治疗
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2022
·
IF 10.53
Zhirong Hu,Haixia Zhang,Xiong-Fei Zhang,Mingmin Jia,Jianfeng Yao
Mixed matrix membranes (MMMs) combine the advantages of both polymers and inorganic fillers, and hold great promise for industrial gas separation. In this work, to enhance the interfacial compatibility between cellulose acetate (CA) matrix and ZIF-8 crystals, an interfacial design strategy was proposed by grafting polyethylenimine (PEI) onto ZIF-8 particles. The introduction of amine-rich PEI could regulate the surface property and maintain the pore accessibility of ZIF-8 crystals. In addition, the amine groups in PEI could interact with hydroxyl/carbonyl groups in CA chains to suppress the non-ideal voids at the ZIF-8/CA interface. With the aid of PEI, the interfacial compatibility between ZIF-8 and CA is substantially enhanced. Compared with pristine CA and ZIF-8@CA membranes, PEI grafted ZIF-8@CA (PZIF-8@CA) membrane exhibits a better gas separation performance, bearing a CO 2 permeability of 150.3 Barrer with CO 2 /N 2 and CO 2 /CH 4 ideal selectivities of 44.2 and 53.7, respectively. The separation mechanisms are attributed to the superior interfacial property , the good dispersion of ZIF-8 particles, the amine groups in PEI, and the high CO 2 solubility of the CA matrix.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Acta Metallurgica Sinica-English Letters
·
2024
·
IF 2.9
Zeng Yanwei,Xu Peng,Liu Guoqiang,Wang Tianguan,Lei Bing,Feng Zhiyuan,Zhang Ping,Meng Guozhe
Chloride-induced corrosion of steel reinforcement is the key factor leading to the degradation of reinforced concrete building durability. Improving the corrosion resistance of oxide scale of rebar has always been a research hotspot in the field of civil engineering materials. A ZIF-8 modified Ce–Sol–gel (ZCS) film was prepared on oxide scale of plain steel rebars by sol–gel method. It is observed that the | Z | 0.01 Hz value of the ZCS film reached 320 kΩ cm 2 , which is about 29 times higher than that of blank rebar in simulated concrete pore (SCP) solution with 0.1 M NaCl. Then, they were inserted into mortar block and curing them in a curing box at T = 20 ± 2 °C and RH = 95 ± 2% for 28 days. Subsequently, these samples were subject to electrochemical impedance spectroscopy in 3.5 wt% NaCl. The | Z | 0.01 Hz value of the rebar with the ZCS film was six times higher than that of the blank rebar after immersing for 20 days, resulting in an overall increase in corrosion resistance for rebar. The results indicated that the modification by ZIF-8 could reduce the porosity of Ce–sol–gel (CS) film and improved the “labyrinth effect” of the film. Additionally, the negative charge on the surface of ZIF-8 in alkaline condition increased the repulsion effect with Cl − , significantly reducing the sensitivity of rebar to Cl − .
研究领域:
土木工程材料
·
防腐蚀技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2016
·
IF 5.31
Wei Liu,Yingjie Zhao,Changfeng Zeng,Chongqing Wang,Christophe A. Serra,Lixiong Zhang
We develop a facile method to fabricate yolk/shell and multi-yolk/shell ZIF-8/alginate hybrid microcapsules by first forming yolk/shell W/O ZIF-8 Pickering emulsions containing sodium alginate in water, followed by sodification of alginate to form the hybrid shell. Polymerization induced phase separation of a polyethylene glycol aqueous and acrylamide aqueous solution is used to form the yolk, and droplet coalescence is used to form multi-yolks. We examine the preparation conditions to obtain a stable ZIF-8 W/O Pickering emulsion. Further, these ZIF-8 Pickering emulsions can be converted to ZIF-8/alginate hybrid microcapsules with both hollow and yolk/shell structures by adding small amount of sodium alginate in the PEG solution, based on our finding that ZIF-8 can gelate sodium alginate. The ZIF-8/alginate hybrid microcapsules exhibit controlled release ability for Rhodamine B, with the yolk/shell one showing a lower dye release percentage. Furthermore, the release rate can be accelerated in an acid condition, resulting from the dissolution of ZIF-8.
研究领域:
材料科学
·
化学工程
·
生物医学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2021
·
IF 10.588
Huan Yang,Shuai Hu,Hui Zhao,Xiaofei Luo,Yi Liu,Chengfei Deng,Yulan Yu,Tianding Hu,Shaoyun Shan,Yunfei Zhi,Hongying Su,Lihong Jiang
Efficient removal of antibiotics from aqueous solution is of fundamental importance due to the increasingly severe antibiotic-related pollution. Herein, a high-performance Fe-ZIF-8-500 adsorbent was synthesized by Fe-doping strategy and subsequent activation with high-temperature. In order to evaluate the feasibility of Fe-ZIF-8-500 as an adsorbent for tetracycline (TC) removal, the adsorption properties of Fe-ZIF-8-500 were systematically explored. The results showed that the Fe-ZIF-8-500 exhibited ultrahigh adsorption capacity for TC with a record-high value of 867 mg g -1 . Additionally, the adsorption kinetics and isotherms for TC onto the Fe-ZIF-8-500 can be well-fitted by the pseudo-second-order kinetics model and the Freundlich model, respectively. The ultrahigh adsorption capacity of Fe-ZIF-8-500 can be explained by the synergistic effect of multi-affinities, i.e., surface complexation, electrostatic attraction, π-π interaction and hydrogen bonding. After being used for four cycles the adsorption capacity of Fe-ZIF-8-500 remains a high level, demonstrating its outstanding reusability. The ultrahigh adsorption capacity, excellent reusability, satisfactory water stability and easy-preparation nature of Fe-ZIF-8-500 highlight its bright prospect for removing tetracycline pollutant from wastewater.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A
·
2021
·Vol. 110
·期 4
·954-963
·
IF 4.396
Yuxuan Ma,Chenwei Wang,Lvming Zhu,Chunmei Yu,Bing Lu,Yang Wang,Yue Ding,Chang-Ming Dong,Yong Yao
Stimuli-responsive prodrug-based nanoplatform with synergistic antitumor activity is of central importance to the development of promising nanomedicines for cancer therapy. Here, we describe a polydopamine-drug conjugate nanocomposite (ZP-PDA-DOX) with targeted cancer photothermal-chemotherapy (PTT-CT), which constructed by a gradual copolymerization of dopamine (DA) and pH-sensitive dopamine-derived prodrug (DA-DOX) into the porous channels of zeolite imidazolate frameworks-8 (ZIF-8), followed by PEGylation with amino-terminated folic acid-polyethylene glycol (NH 2 -PEG-FA) to acquire the high biocompatibility, specificity, and excellent tumor-targeting property. The incorporation of polydopamine strengthened the stability and dispersion of ZIF-8, and also conferred photothermal conversion effect. In the tumor acidic microenvironment, the acid-labile hydrazone linker of DA-DOX and ZIF-8 promptly degraded to release activated DOX. Moreover, the generated hyperthermia due to the high photothermal conversion efficiency of PDA component could accelerate drug release, and simultaneously thermally ablate tumor tissue to maximize the DOX-induced CT, which could also assist PTT to eradicate tumor cells. This study provides a promising strategy for targeted cancer PTT-CT with synergistic anti-tumor effect.
研究领域:
纳米医学
·
肿瘤学
·
生物材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CRYSTENGCOMM
·
2014
·Vol. 16
·期 38
·8994-9000
·
IF 3.858
Tiantian Xing,Yongbing Lou,Qilong Bao,Jinxi Chen
Nanocrystals of ZIF-8 have been successfully prepared in the presence of non-ionic triblock copolymers P123 and F127 under microwave irradiation. Noticeably, the reaction time could be significantly reduced down to 1 min. The obtained ZIF-8 nanocrystals had sizes of sub-104 nm and exhibited a high BET surface area of 1599 m2 g−1. This approach is expected to be an efficient and environmentally friendly method for the preparation of ZIF-8.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2022
·
IF 4.831
Ruihong Yao,Zhijian Li,Panpan Huo,Congcong Gong,Gang Liu,Chunhong Zheng,Shouzhi Pu
In this study, we constructed zinc based metal–organic framework functionalized by L-histidine (His@ZiF-8). The His@ZiF-8 had high porosity, large surface area, abundant carboxyl and amino group, which has been found to greatly enhance the aggregation-induced emission (AIE) of tetracycline (TC). After the His@ZiF-8 enrichment with TC, the TC exhibited strong fluorescence emission peak at 565 nm based on AIE. Under the optimal conditions, the fluorescence intensity of TC exhibited a good linear relationship with TC concentration within 0.1–80 μM with a low limit of detection of 28.6 nM. Antibiotic analogs such as neomycin, chloramphenico, ampicillin, kanamycin, and erythromycin have no obvious interference. In addition, the developed method was successfully used to the detection of TC in milk, river water, and honey.
研究领域:
材料科学
·
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Dan Yang,Meng Du,Zia-ud Din,Shikui Yang,Lei Chen,Jie Cai,Jie Pang,Xi Chen,Wenping Ding
The Gum Ghatti (GG)/Konjac Glucomannan (KGM)/zeolitic imidazolate framework-8 (ZIF-8) composite aerogels (GKZ) were synthesized by the sol-gel method and the vacuum freeze-drying method for effective removal of ciprofloxacin (CIP) from contaminated water. The results showed that the addition of different concentrations (0, 0.4, 0.6, 0.8 wt%) of GG could promote homogeneity but weakened the molecular interaction of the aerogel system without water. Remarkably, the ZIF-8 maintained the crystal structure, as well as its dispersion on the surface of aerogel, was significantly improved. Additionally, it was also found that the incorporation of moderate GG was favored regarding CIP adsorption, and GKZ with 0.6 % GG (GKZ0.6) exhibited the highest adsorption capability for CIP around 1035.4 mg/g. Besides, the effects of various ions, ionic strength , and pH on CIP adsorption were also investigated, which provided the reference for guiding the utilization of GKZ0.6. Furthermore, at fewer cycles, the adsorption efficiency of GKZ0.6 on CIP showed less loss. These features revealed that the GKZ composite aerogels might be a promising adsorbent for CIP removal from water.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
RESEARCH ON CHEMICAL INTERMEDIATES
·
2021
·Vol. 47
·期 4
·1471-1487
·
IF 2.914
Zheng Wei,Feng Sheng,Feng Shanshan,Shao Cong,Jiang Zhenfei,Wu Wei,Ge Yunjie,Liao Shenyu,Li Kunjie,Duan Chunying,Meng Qi
In this work, a ternary complex (g-C 3 N 4 /ZIF-8/AgBr) was prepared by modifying the surface of the protonated graphitic carbon nitride (g-C 3 N 4 ) with photosensitive AgBr and zeolitic imidazolate framework-8 (ZIF-8), and its physicochemical parameters, crystal morphology and electrochemical properties were characterized using a series of techniques. The modified g-C 3 N 4 not only improves the ability to capture pollutants in water, but also efficiently catalyzes the degradation of bisphenol A (BPA) in water by rapidly producing superoxide radicals ( · O 2 − ), cavitation (h + ) and hydroxyl radicals ( · OH) in visible light, with the removal efficiency reaching 80.4%. The activity of catalytic degradation of BPA from strong to weak is g-C 3 N 4 /ZIF-8/AgBr, g-C 3 N 4 /AgBr, g-C 3 N 4 /ZIF-8, AgBr, g-C 3 N 4 , ZIF-8. After four cycles of experiments, it was found that g-C 3 N 4 /ZIF-8/AgBr had still considerable degradation ability (70.2%) and stability.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2021
·
IF 3.171
Chen Gu,Wenqiang Weng,Cong Lu,Peng Tan,Yao Jiang,Qiang Zhang,Xiaoqin Liu,Linbing Sun
MXenes have attracted increasing research enthusiasm owing to their unique physical and chemical properties. Although MXenes exhibit exciting potential in cations adsorption due to their unique surface groups, the adsorption capacity is limited by the low specific surface area and undeveloped porosity. Our work aims at enhancing the adsorption performance of a well-known MXene, Ti 3 C 2 T x , for methylene blue (MB) by decorating tiny ZIF-8 nanoparticles in the interlayer. After the incorporation of ZIF-8, suitable interspace in the layers resulting from the distribution of tiny ZIF-8 appears. When employing in MB, the adsorption capacity of composites can reach up to 107 mg·g −1 while both ZIF-8 (3 mg·g −1 ) and Ti 3 C 2 T x (9 mg·g −1 ) show nearly no adsorption capacity. The adsorption mechanism was explored, and the good adsorption capacity is caused by the synergistic effect of ZIF-8 and Ti 3 C 2 T x , for neither of them is of suitable interspace or surface groups for MB adsorption. Our work might pave the way for constructing functional materials based on the introduction of nanoparticles into layered materials for various adsorption applications.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 142
·期 10
·e56569
·
IF 2.7
Jianmin He,Hao Liu,Bingtao Bao,Hanzhong Ren,Weixiang Xu,Qiuyan Luo,Yiting Xu,Jie Li,Birong Zeng,Conghui Yuan,Guorong Chen,Lizong Dai
The marine environment with high humidity and salinity poses higher requests on the service life of traditional polymer coatings therefore, various fillers have been developed for modification. Smart coatings built by fillers that possesses passive barrier and active self-healing properties show considerable prospects in metal protection. Herein, we applied a novel dual-loading strategy to design tannic acid (TA) decorating hydroxyapatite (HAp)/zeolite imidazole framework (ZIF-8) loading 2-amino benzothiazole (2-ABT) composite fillers. The epoxy coating (EP) doped with ABT@ZIF8-HAp@TA (AZHT/EP) presented hydrophobicity and improved mechanical performance on Q215 steel. Moreover, the |Z| f=0.01Hz of AZHT/EP after immersion in saline water for 28 days (6.24 × 10 10 Ω•cm 2 ) is higher than pure EPs with two magnitudes. The anticorrosion mechanism of the AZHT/EP was proposed based on the analysis of corrosion products. To conclude, the dual-loading strategy has considerable potential in designing smart coatings for corrosion protection in harsh environments.
研究领域:
材料科学
·
表面工程
·
腐蚀防护
·
纳米复合材料
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）