Journal of Materials Chemistry A
·
2023
·Vol. 11
·期 14
·7564-7571
·
IF 11.9
Yechen Si,Yunhao Jiang,Jiayi Liu,Hongyu Guan,Xing-Long Wu,Changsheng Shan
It is a huge challenge to develop safe and stable lithium metal batteries with high energy density owing to the growth of Li dendrites. Herein, for the first time, an oxidized ZIF-8/polyacrylonitrile (OZPAN) fiber film is designed as a multifunctional interlayer for constructing a novel Li metal battery with superior performance. The excellent lithophilicity and uniform porous structure of the OZPAN interlayer could anchor and regulate Li-ion flux with high ionic conductivity (2.22 mS cm−1), high Li+ transference number (0.78) and homogeneous Li deposition. Therefore, the Li//Li symmetric cell exhibits ultralow overpotential (11 mV) with long-term cycling stability and dendrite-free Li deposition. Moreover, Li//LiFePO4 (LFP) full cell has an extremely high capacity (162 mA h g−1 at 1C, close to the theoretical specific capacity of LFP), outstanding rate performance and high coulombic efficiency (more than 94%) during 500 cycles. This study demonstrates a promising interlayer strategy for developing high-performance Li metal batteries.
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IONICS
·
2023
·Vol. 29
·期 5
·1741-1749
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IF 2.8
Xiong Qiming,Li Xiongzhuang,Zhou Mulan,Chen Rentian,Sun Cheng,Zhou Yanyan,Wang Sijia,Qiu Xiangyun,Song Meijia,Wei Tao
Nickel cobalt layered double hydroxide (NiCo-LDH) nanosheets have attracted much interests in lithium-ion batteries (LIBs) because of its high capacity and low cost. However, the low cycling stability limits their practical applications. Herein, we introduce a simple one-pot hydrothermal method to fabricate a novel flower-shaped Zif-67@NiCo-LDH heterostructure as the anode materials. The structures, morphology, and compositions of the materials were studied by XRD, SEM, TEM, XPS, EDX, and Raman spectra. Electrochemical tests were also conducted. The Zif-67@NiCo-LDH simultaneously inherited the cycling stability of Zif-67 and the high capacity of NiCo-LDH, which effectively improves the conductivity and structural integrity under the synergistic effect of the flower-shaped heterostructures and compositions and showed a good electrochemical performance. This work might enable the future design of heterostructures materials with layered double hydroxide for many other energy-storage technologies.
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MICROPOROUS AND MESOPOROUS MATERIALS
·
2023
·
IF 5.2
Jian Luo,Yu Ma,Yanfeng Liu,Xiaojing Huang,Ahui Sun,Cong Wang,Weiting Yang,Qinhe Pan
Sustainable, environmentally friendly and economically viable treatment of marine oil spills attracts a great attention. For the first time, composites with highly durable structure were prepared for continuous oil/water separation by in situ growth of zeolitic imidazole framework ZIF-90 on a porous melamine sponge (MS). First, a thin layer of metal hydroxide (Zn-LDH) was introduced on the inner wall of MS and ZIF-90 particles were loaded onto the sponge fibers by homologous induction to obtain the ZIF-90/MS composite. The thin Zn-LDH layer greatly enhanced the anchoring force of ZIF-90 on the MS skeleton to effectively avoid the crystals from piling up together. The resulting ZIF-90/MS was modified in situ with octadecylamine (ODA) to give a superhydrophobic ODA-ZIF-90/MS composite with a water contact angle (WCA) of 154 o , which demonstrated great oil adsorption capacity (24–63 g/g) and excellent recoverability (98.7% absorption retention after 50 cycles). With the assistance of a pump drive, continuous separation of oil spill contaminants from actual seawater can be achieved with fluxes of 13839 g. h −1 . g −1 and 13513 g. h −1 . g −1 for hexane and gasoline, respectively, without any water adsorption. The highly durable ODA-ZIF-90/MS composite with puncture structure showed excellent cycling performance in oil/water separation with less than 1% ODA-ZIF-90 spillage after 50 squeeze desorption cycles. This novel integrated ODA-ZIF-90/MS composite demonstrates a promising strategy for large-scale of oil spill cleanup.
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Yusof A.Y.A. Mohammed,A.M. Abdel-Mohsen,Qi-Jun Zhang,Mohammad Younas,Lu-Bin Zhong,Jia-Cheng E. Yang,Yu-Ming Zheng
Hexavalent chromium Cr(VI) is one of the most toxic heavy metal ions. Therefore, the removal of this contaminant from wastewater is of particular importance. Herein, a novel zeolitic imidazolate framework (ZIF-8) nanoparticles based electrospun polyacrylonitrile (PAN)/polyethylenimine (PEI) nanofibrous composite membranes (NCMs) were prepared and characterized by SEM, XRD, FTIR, TGA and other characterization techniques. The NCMs were tested for the adsorption of Cr(VI) from water. Results showed that the inclusion of PEI tailored the surface of the NCM to be superhydrophilic. The prepared electrospun NCM showed a high adsorption capacity for Cr(VI) (up to 403.5 mg·g −1 ) under ZIF-8 concentration of 5 wt%. More importantly, introducing ZIF-8 up to 5 % did not only increase the adsorption capacity but also enhanced the thermal stability, mechanical strength, and structure of the NCM. The experimental analysis of co-existing ions and the reusability of up to ten cycles showed that the optimized PAN/PEI@ZIF-8 NCM exhibited good selectivity and excellent stability for wastewater treatment. The adsorption kinetics followed the pseudo-second-order model and the adsorption isotherm could be fitted well by the Langmuir model. Thermodynamics revealed that the adsorption process was spontaneous and endothermic. The adsorption mechanism was found to be mainly electrostatic attraction and reduction. This study demonstrated the potential of ZIF-8-incorporated PAN/PEI NCMs for the removal of Cr(VI) from water.
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JOURNAL OF MEMBRANE SCIENCE
·
2023
·
IF 9.5
Liu-Kun Wu,Zhen-Liang Xu,Min Tong,En-Chao Li,Yong-Jian Tang
In recent years, the incorporation of nanoparticles in nanofiltration membranes has received extensive attention as a practical approach to improve membrane performance. However, previous studies attributed the enhancement of TFN membrane performance primarily to the advanced properties of nanoparticles and the structural impact on the polyamide layer, while ignoring the influence and contribution of the substrate. This study provides compelling evidence that the effect on the substrate of blending nanoparticles contributes to the enhancement of membrane permeability. We quantified the changes in permeation resistance composition of the TFC and TFN membranes before and after heat treatment by a resistance-in-series model, combined with the addition of polyvinylpyrrolidone. After incorporation of ZIF-8, the permeation resistance of substrate decreased from 0.177 h bar m −1 to 0.0313 h bar m −1 after heat curing, while that of PA layer decreased from 0.1375 h bar m −1 to 0.0972 h bar m −1 . In addition, we removed the PA layer of TFC and TFN membranes by acid hydrolysis. The results indicated that the PWP of TFN membrane were continuously greater than that of the TFC membrane, which supports our conclusion that nanoparticles impacted the shrinkage of substrate during heat curing. The current study provides a novel mechanistic understanding of the improvement of TFN membrane performance by nanoparticles.
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Frontiers in Bioengineering and Biotechnology
·
2023
·
IF 5.7
Du Longhai,Zhu Guanghao,Xu Yanlong,Han Binxu,Wang Yu,Zhu Minhui,Meng Yingdi,Chen Huaiwen,Yu Zuochong
Introduction: The toxic side effects of systemic high-dose chemotherapy and poor sensitivity to radiotherapy hinder the survival rate of patients with osteosarcoma (OS). Nanotechnology offers new solutions for OS treatment; however, conventional nanocarriers suffer from inadequate targeting of tumors and short in vivo circulation time.Methods: Here, we designed a novel drug delivery system, [Dbait-ADM@ZIF-8]OPM, which uses OS-platelet hybrid membranes to encapsulate nanocarriers, to enhance the targeting and circulation time of nanocarriers, thereby enabling high enrichment of the nanocarriers in OS sites.Results: In the tumor microenvironment, the pH-sensitive nanocarrier, which is the metal-organic framework ZIF-8, dissociates to release radiosensitizer Dbait and the classical chemotherapeutic agent Adriamycin for the integrated treatment of OS via radiotherapy and chemotherapy. Benefiting from the excellent targeting ability of the hybrid membrane and the outstanding drug loading capacity of the nanocarrier, [Dbait-ADM@ZIF-8]OPM showed potent anti-tumor effects in tumor-bearing mice with almost no significant biotoxicity.Conclusion: Overall, this project is a successful exploration of the combination of radiotherapy and chemotherapy of OS treatment. Our findings solve the problems of the insensitivity of OS to radiotherapy and the toxic side effects of chemotherapy. Furthermore, this study is an expansion of the research of OS nanocarriers and provides new potential treatments for OS.
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PubMed
高影响因子
ANALYTICA CHIMICA ACTA
·
2022
·
IF 6.911
Shan Xu,Peifang Chen,Xichi Lin,Imran Mahmood Khan,Xiaoyuan Ma,Zhouping Wang
Histamine is a significant biomarker to assess the freshness of fish products. In this study, a novel MOF-based SERS sensor for histamine determination was synthesized by wrapping PVP-capped Au nanoflowers with a ZIF-67 shell (Au [email protected] ). The highly branched Au NFs core exhibited a strong electromagnetic field enhancement effect and provided an ultra-sensitive SERS fingerprint spectrum, while ZIF-67 shell was the contributor to enrich the target and stabilize the substrate. The morphology of the core-shell structures can be easily controlled by the concentrations of the capping agent PVP and MOF precursor Co ion . Consequently, 4-MBA pre-grafted on the optimized SERS substrate can act as the Raman internal standard (IS) to eliminate signal fluctuations through standardizing all spectra against its peak at 1074 cm −1 . Moreover, as the specific receptor for histamine molecules, 4-MBA helped reach the low detection sensitivity, where the SERS intensity ratio, I 1172 /I 1074 presented a good linear relationship towards the histamine concentrations (10 −3 -10 −7 M) with the LOD of 0.87 × 10 −7 M (R 2 = 0.9930). Furthermore, the application in monitoring fish spoilage process demonstrated the feasibility and reliability of the developed sensor. This work provided a facile strategy to construct MOF-based SERS substrate as a potential platform for the shelf-life prediction of fish products.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2019
·Vol. 29
·期 17
·1807191
·
IF 15.621
Zequn Yang,Hailong Li,Jianping Yang,Shihao Feng,Xi Liu,Jiexia Zhao,Wenqi Qu,Pu Li,Yong Feng,Po-Heng Lee,Kaimin Shih
A key challenge in elemental mercury (Hg 0 ) decontamination from flue gas lies in the design of a sorbent with abundant reactive adsorption sites that exhibit high affinity toward Hg 0 to simultaneously achieve rapid capture and large capacity. Herein, zeolitic imidazolate framework-8 (ZIF-8) supported copper selenide (CuSe) nanocomposites are synthesized by a newly designed two-step surfactant-assisted method. The as-prepared CuSe/ZIF-8 with CuSe to ZIF-8 mass ratio of 80% (0.8NC-ZIF) exhibits unparalleled performance toward Hg 0 adsorption with equilibrium capacity and average rate reaching 309.8 mg g −1 and 105.3 µg g −1 min −1 , respectively, surpassing all reported metal sulfides and traditional activated-carbon-based sorbents. The impressive performance of 0.8NC-ZIF for Hg 0 immobilization is primarily attributed to the adequate exposure of the Se-terminated sites with high affinity toward Hg 0 resulted from the layered structure of CuSe. The adsorbed mercury selenide exhibits even higher stability than the most stable natural mercury ore—that is, mercury sulfide—hence minimizing its environmental impact when the CuSe/ZIF-8 sorbent is dumped. This work provides a new mindset for future design of sorbents for efficient Hg 0 capture from industrial flue gas. The results also justify the candidature of CuSe/ZIF to be applicable for mercury pollution remediation in real-world conditions.
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高影响因子
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Xiaona Ren,Fenglei Lyu,Jian Yang,Fangyuan Wang,Linlin Xue,Li Wang,Xiangwen Zhang,Qingfa Wang
To develop highly efficient non-noble-metal electrocatalysts for oxygen evolution reaction is still a great challenge. Herein, cobalt and iron oxide with hollow structure has been fabricated using ZIF-67 as template, via reflux process followed by calcination . The simultaneous structural and electronic modulation are achieved due to the homogenous Fe incorporation. The Co sites in higher oxidation states and Fe sites with higher electron density can enhance the adsorption of H 2 O molecules and OOH species, and thus promote the water oxidation . The unique hollow structure also facilitates the mass transfer at the interface of electrolyte and active atoms. The optimal cobalt and iron oxide hollow nanocages exhibit superior OER performance, delivering an ultralow overpotential of 274 mV at 10 mA cm −2 and a very small Tafel slope of 31 mV dec −1 in alkaline media, which outperform the state-of-the-art RuO 2 . This work provides an efficient approach to design and explore non-precious electrocatalysts for electrochemical energy conversion and storage.
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Catalysis Science & Technology
·
2019
·Vol. 9
·期 10
·2673-2681
·
IF 5.726
Bing Hu,Yazhi Yin,Zixin Zhong,Dengdeng Wu,Guoliang Liu,Xinlin Hong
Maximizing the Cu–ZnO interface is regarded as the best strategy to promote methanol synthesis activity over CuZn catalysts. Reducing the ZnO particle size can enhance the Cu–ZnO interaction, but its synthesis with a sub-5 nm size still remains a challenge. Moreover, the fabrication of an active powder catalyst with an inverse ZnO/Cu configuration is still very rare. In this work, we report a facile synthesis of inverse ZnO/Cu catalysts by direct calcination of Cu@ZIF-8 (zeolitic imidazolate framework-8). The particle size of ZnO and Cu can be tuned by changing the Cu loading as well as the calcination temperature. Importantly, inverse ZnO/Cu catalysts with sub-5 nm ZnO were obtained under gentle calcination at 623 K. In the CO2 hydrogenation reaction, the highest methanol synthesis activity reached 933 g kgcat−1 h−1 at 533 K and 4.5 MPa, with a high turnover frequency (TOF) of 0.013 s−1, over an optimized C2Z-623 catalyst, which exceeds the commercial CuZnAl catalyst (HiFuel R120, Johnson Matthey) and has ranked the top reported value over advanced CuZn catalysts under comparable conditions. Such excellent activity is attributed to the inverse structure of Cu particles covered by sub-5 nm ZnO, which promotes the intimate Cu–ZnO interface with enhanced SMSI. Moreover, we find that the methanol turnover frequency (TOF) monotonically increases with decreasing the particle size of ZnO as well as Cu. It is proposed that reducing the ZnO size favors the spillover of reducible ZnOx species onto the Cu surface while lowering the Cu size is responsible for the enhanced amount of exposed Cu steps for accommodating Zn species, both of which could facilitate the formation of Zn covered Cu steps as active sites for methanol synthesis.
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RSC Advances
·
2018
·Vol. 8
·期 46
·26377-26382
·
IF 2.936
Lin Peng,Xiaobo Gong,Xinghong Wang,Zhao Yang,Yong Liu
Advanced oxidation processes based on sulfate radicals have been widely used to eliminate contaminants. In this study, an efficient cobalt-based three-dimensional heterogeneous catalyst was fabricated through in situ growth of ZIF-67 on nickel foam (NF/ZIF-67). The factors influencing NF/ZIF-67-activated peroxymonosulfate (PMS) were investigated. Enhanced RhB degradation was observed using NF/ZIF-67-activated PMS under neutral conditions and high temperatures. Sulfate radicals were the dominant active species for the oxidative decolorization of RhB with NF/ZIF-67-activated PMS. NF/ZIF-67 was easily separated from the solution, and it also retained high catalytic stability. This study provides a rapid and mild method for the fabrication of promising three-dimensional heterogeneous catalysts for PMS activation and wastewater treatment.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Gongduan Fan,Xiaomei Zheng,Jing Luo,Huiping Peng,Hui Lin,Minchen Bao,Liang Hong,Jinjin Zhou
The presence of acetaminophen (ACT) used for painkillers has attracted great attention in the world, which have potentially adverse effects on aquatic lives and human beings. Advanced oxidation technology applied to water repair has received increasing concerns in recent years. In this study, photodegradation ACT in aqueous solution over Ag/AgCl@ZIF-8 synthesised by a simple stirring method was investigated under visible light irradiation. The prepared photocatalyst was characterized by powder X-ray diffraction (XRD), field emission scanning electron microscopy (SEM) and UV-visible diffuse reflectance spectra (UV-vis). The degradation rates of ACT under different parameters were studied to get the optimal operating conditions in water. Results showed that the photodegradation process fitted pseudo-first order model well. 99% ACT degradation achieved when Ag/AgCl@ZIF-8 was delivered to the solution compared with ZIF-8 and Ag/AgCl with the maximum value of constant ( k app ). The degradation rate obviously slowed down when the initial concentration of ACT increased to 2 mg/L while it increased with the increasing of dosage of photocatalyst. In contrast, pH has little effect on the degradation of ACT over Ag/AgCl@ZIF-8. The Ag/AgCl@ZIF-8 showed high efficiency for degradation after three repeated cycles which demonstrated the prepared photocatalyst has high stability. The O 2 − turned out to be the main active group during the photodegradation process responsible for the disappearance of ACT. Intermediate products analysis results by LC-MS showed that photolysis was the first step of photocatalytic degradation for ACT followed by a ring cleavage.
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危险品化学品经营许可证（带存储）