DALTON TRANSACTIONS
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2023
·
IF 4
Ruifeng Wang,Qiyuan Pan,Fang Li,Jingying Guo,Yaru Huo,Chao Xu,Manwen Xiong,Ziyong Cheng,Min Liu,Jun Lin
Caries as a result of acid demineralization is the most common oral microbial infection disease. Due to the small and complex intraoral operating space, it is challenging to completely remove Streptococcus mutans (S. mutans) and other cariogenic bacteria. As an intelligent acid-responsive photosensitive nanomaterial, O2-Cu/ZIF-8@Ce6/ZIF-8@HA (OCZCH) was chosen to adapt the anaerobic and acidic microenvironment to inactivate S. mutans. In this work, OCZCH not only has a regular nanomorphology under the SEM and TEM images but also has an intelligent acid responsiveness as evidenced by the release of Ce6 and oxygen. When excited by near-infrared light at 650 nm, Ce6 released reactive oxygen species (ROS) that act synergistically with internal oxygen to significantly enhance the antimicrobial therapeutic effect of photodynamic therapy (PDT). In vitro, antimicrobial experiments showed that OCZCH could achieve an impressive sterilization effect against S. mutans and the biofilm. Notably, the acid-producing ability of the bacteria was also significantly inhibited. Considering its oxygen-carrying photosensitizing properties, excellent responsiveness to acidic environments, and antimicrobial capacity under anaerobic conditions, OCZCH is considered an innovative candidate for clinical application in treating dental caries.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2021
·
IF 13.273
Cong Yang,Wenjie Xu,Xin Meng,Xinlong Shi,Luhua Shao,Xiangliang Zeng,Zhenfei Yang,Sijian Li,Yutang Liu,Xinnian Xia
Giving the coating to exert a powerful active protective effect for metal substrates, such as self-healing property by encapsulating corrosion inhibitor into a pH-responsive release tool, is a crucial way to develop an efficient anticorrosive coating. Here, a pH-responsive hydrophilic controlled release system (BTA@ZIF-8@tannic acid, abbreviated ZBT) based on ZIF-8 for waterborne EP self-healing anticorrosive coating was reported. Encapsulation of BTA into ZIF-8 by a facile one-pot method and the resulting product showed a high loading percentage. The anticorrosion performance of composite coatings was studied by EIS, and the results indicated that ZBT could effectively enhance the protective performance of the coating and endow it with outstanding self-healing performance, in which the |Z| 0.01 Hz was about 2 orders of magnitude higher than that of pure EP coating after 20 days of immersion. The outstanding performance is related to the excellent compatibility of ZBT, the blocking effect of newly produced hydrophobic substances and the corrosion inhibitor and ferric tannate protective films formed on the exposed metal surface. In this work, tannic acid plays a role of killing two birds with one stone in enhancing the corrosion protection performance of the coating. This synergistic strategy opens a new possibility to fabricating excellent anticorrosive coatings with efficient self-healing functionality.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
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IF 5.316
Qiongguang Li,Yanhong Wang,Xingyue Gao,Huifang Li,Qiangqiang Tan,Ziyi Zhong,Fabing Su
It is urgent to develop novel anode materials with high energy density and facile synthetic procedures, since the development of commercial lithium ions batteries (LIBs) is limited by the unsatisfied capacity of graphite. Herein, we propose a modified method to prepare core-shell structured ZIF-8 derived N-doped carbon/silicon (Si@NC) composites (6.6 wt% of nano-Si), featuring facile synthetic procedures and mild condition. The physicochemical properties of the ZIF-8 derived N-doped carbon are not changed when the nano-Si particles are employed as the seeds. The Si@NC composites deliver high reversible capacity of 724 mAh g −1 . Attributed to the good charge conductivity and structural stability of the ZIF-8 derived N-doped carbon, the Si@NC composites exhibit good rate performance (98.5% of the initial average capacity is retained after being cycled at different current density) and cycle stability (302 mAh g −1 while that of commercial graphite is ~10 mAh g −1 at 1000 mA g −1 after 800 cycles). The enhancement of lithium storage capability of the ZIF-8 derived N-doped carbon shows promising application in high energy density LIBs.
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Journal of CO2 Utilization
·
2021
·
IF 7.132
Qin Ying,Han Chen,Peijing Shao,Xiaowei Zhou,Xiaojia He,Jiexu Ye,Shihan Zhang,Jianmeng Chen,Lidong Wang
Tertiary amine-based absorption process possesses high absorption capacity and low heat duty for CO 2 capture. However, its slow CO 2 absorption rate retards its industrial application. This work developed a core-shell magnetic ZIF-8@Fe 3 O 4 -carbonic anhydrase composite to promote CO 2 absorption into tertiary amine, e.g., diethanolamine (MDEA) due to its easy recovery from the solution. The catalytic performance of CA@ZIF-8@Fe 3 O 4 that had three particle sizes were investigated. Experimental results revealed that the obtained CA@ZIF-8@Fe 3 O 4 can achieve the relative activity as high as 95.2 % compared with the free counterparts. Large particle size of ZIF-8@Fe 3 O 4 was beneficial to activity but adverse to loading. Magnetic analysis shows that the developed CA@ZIF-8@Fe 3 O 4 possessed remarkable magnetic response which made recycling more convenient.
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2020
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IF 7.1
Peihong Tong,Yongjuan Meng,Junyu Liang,Jianping Li
A molecularly imprinted electrochemiluminescence (MIP-ECL) sensor with high sensitivity and good structural stability was constructed using the new composite material ZIF-8-NH 2 as an imprinted membrane. The ZIF-8-NH 2 imprinted composite material was prepared through layer-by-layer self-assembly with carboxyl functionalized magnetic CoFe 2 O 4 nanoparticles as the carrier, ZIF-8-NH 2 precursor as the functional monomer, and cinchonine (CCN) as the template molecule. The ZIF-8 MIP@Au@CoFe 2 O 4 core–shell imprinted material was characterized using infrared spectrometry, scanning electron microscopy and X-ray diffraction, and the recognition performance of molecularly imprinted sensor was characterized through electrochemical impedance spectroscopy and electrochemiluminescence (ECL) method. When CCN was re-adsorbed by the imprinted membrane, the ECL intensities of the MIP sensor increased because CCN molecules can promote the ECL intensity of Ru(bpy) 3 2+ . As a result, the MIP sensor showed preeminent linear response to CCN in the range of 1.0 × 10 −12 – 3.1 × 10 −8 mol/L, with a detection limit of 7.0 × 10 −13 mol/L, which is much lower than that reported for other detection methods. The sensor shows good practicality and can be used to detect CCN in human serum with recoveries ranging from 96.0%–103.0%.
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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.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2020
·
IF 4.939
Ying-Hua Zhou,Xingyun Cao,Jingzhu Ning,Changchun Ji,Yong Cheng,Jing Gu
To exploit the low-cost and efficient catalyst for the hydrolytic dehydrogenation of ammonia borane , trace amount of palladium-doped transition metal (Cu, Ni, Co, Fe and Zn) nanoparticles have been incorporated into the interior of metal-organic frameworks named ZIF-8, ZIF-67, ZIF-67/ZIF-8 and core-shell ZIF-67@ZIF-8 by a double-solvent approach. The optimized catalyst of CuPd 0.01 @ZIF-67@ZIF-8 composite exhibited an excellent activity with a turnover frequency (TOF) value of 30.15 mol H 2 (mol metal ) −1 min −1 at 298 K and a relatively low activation energy of 38.78 kJ mol −1 . It might attributed to both ultrafine size of metal nanoparticles (~3 nm) induced by the confinement of core-shell ZIF-67@ZIF-8 and the synergistic effect between Pd and Cu. Moreover, the detailed kinetic study has manifested that this catalytic reaction is first-order in regards to the catalyst amount while zero-order as for the concentration of ammonia borane. In addition, the durability and recyclability of CuPd 0.01 @ZIF-67@ZIF-8 have been demonstrated to be great.
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MATERIALS LETTERS
·
2020
·
IF 3.204
Feihong Wang,Tong Zheng,Panpan Wang,Jun Ma
In this study, we investigated the influences of zeolitic imidazolate framework-8 derived porous carbon (CZIF-8) on the permeation and antifouling property of thin-film nanocomposite membranes (TFN). The incorporation of CZIF-8 into polyamide layer enhanced the water flux from 11.64 to 18.23 L/m 2 ∙h without decreasing NaCl rejection. Dynamic fouling tests with bovine serum albumin illustrated that the TFN membrane possessed an enhanced antifouling property after three cycles. The higher water flux recovery ratio and the lower fouling ratio of TFN membranes are attributed to the changes in physiochemical property of membrane.
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CHEMICAL ENGINEERING SCIENCE
·
2020
·
IF 3.871
Wei Zhu,Wenquan Huang,Liping Ye,Yuehua Deng,Qiuling Xie,Yanbin Jiang
Zein nanoparticles have good prospects as a pharmaceutical carrier but limited in further application by its poor stability and re-dispersibility. To obtain high stability and pH-responsive drug delivery, succinylated-zein (Suc-zein) was synthesized by nucleophilic substitution reaction, the material obtained was used to prepare Suc-zein nanoparticles (SZs). The SZs prepared not only had good dispersibility but showed better stability than zein particles on pH, storage and salinity. After loading indomethacin (Indo) into zeolitic imidazolate framework-8 (ZIF-8), the core-shelled Indo-Suc-zein-ZIF-8 (Indo-SZZs) were fabricated by coating Suc-zein onto the surface of ZIF-8 with better stability and high drug loading. Indo-SZZs were pH-responsive and sustained a drug release profile in a simulated environment. Also SZZs presented as being non-toxic, having good biocompatibility and good cellular up-take performance, and the cytotoxicity of Indo-SZZs was significantly higher than that of Indo. This provides a new insight into the preparation of a zein-based oral drug delivery system.
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ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Hexiang Sun,Zachary Magnuson,Wenwen He,Weijie Zhang,Harsh Vardhan,Xiaolong Han,Gaohong He,Shengqian Ma
The desulfurization property of conventional mixed matrix membranes (MMMs) cannot meet the necessary demand due to particles aggregation and interface defects. Here, we put forward a layer-by-layer (LBL) approach to make a novel PEG@ZIF-8/poly(vinylidene difluoride)(PVDF) composite membrane for pervaporation desulfurization. In this way, a ZIF-8 layer is covered on the surface of the PVDF porous membrane via an in situ growth method. Then, a PEG layer is covered on the ZIF-8 layer by a casting method. Compared with pristine PEG membranes, the separation performance of the ZIF-8@PEG/PVDF nanocomposite membrane increased significantly. This can be attributed to the homogeneous ZIF-8 particle layer and better compatibility between the poly(ethylene glycol) (PEG) matrix and ZIF-8 particles. The membrane achieves a maximum total flux of 3.08 kg·m–2·h–1 at the third in situ growth cycles of ZIF-8 particles and a maximum sulfur enrichment factor of 7.6 at the sixth in situ growth cycles of ZIF-8 particles.
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2020
·
IF 5.162
Yinyin Liu,Zehao Li,Shuiyang Zou,Chunbo Lu,Yao Xiao,Hu Bai,Xiaoli Zhang,Haibo Mu,Xiuyun Zhang,Jinyou Duan
Methicillin-resistant Staphylococcus aureus (MRSA) is one of the most common causes of hospital infection. Here, we showed that hyaluronic acid modified organic metal framework material ZIF-8 could be a Trojan horse of vancomycin (Van) for effective treatment of MRSA infections. The Van-loaded nanoparticles were readily up-taken by macrophages via a CD44-mediated process and collapsed in the acidic condition of endosome/lysosome, as a consequence, it could eradicate MRSA with high efficiency in macrophages. This drug delivery system with negligible toxicity could resolve MRSA infections in a well-established mouse pneumonia model.
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高影响因子
CRYSTENGCOMM
·
2020
·Vol. 22
·期 25
·4250-4259
·
IF 3.117
Xiaoxue Qi,Feng Shang,Tao Wang,Yuqin Ma,Yongsheng Yan
In recent years, photocatalytic degradation on inorganic semiconductors has been attracting widespread attention. However, for a single semiconductor, the speed of the recombination of electrons and holes is fast, which leads to a decrease in the absorption of sunlight, thereby affecting its photocatalytic efficiency. Therefore, the coupling of semiconductor and metal–organic framework is of great significance due to its porosity and large specific surface area. Herein, a composite photocatalyst was obtained by coupling ZIF-8 and TiO2(B) via a simple method. XRD, FT-IR spectroscopy, SEM, TEM, UV-visible diffuse reflectance spectroscopy, XPS, EPR and EDS were used to study the as-prepared samples. Photocatalytic degradation experiments confirmed that the composites have significantly improved photodegradation performance due to the increased light utilization and fast charge carrier transfer. Moreover, the possible mechanism of photodegradation was also proposed. This study provides an initial view on the coupling of semiconductor and metal–organic framework to enhance the photocatalytic performance.
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危险品化学品经营许可证（带存储）