JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 5
·1-11
·
IF 2.8
Su Hao,Wang Qing,Dai Jianfeng,Li Weixue
Rational design of electrode materials is an important means to improve the performance of supercapacitors. In this paper, CoMoO 4 @Co 3 O 4 composite is prepared by hydrothermal treatment and sintering treatment using ZIF-67 as a self-supporting template. The CoMoO 4 @Co 3 O 4 electrode shows an excellent specific capacity of 2003 F g −1 at a current density of 1 A g −1 , and the capacity retention after 5000 cycles can reach 68% at a current density of 10 A g −1 . In addition, the asymmetric supercapacitor composed of CoMoO 4 @Co 3 O 4 composite and activated carbon (AC) shows an energy density of 56 Wh kg −1 at a power density of 750 W kg −1 and the capacity retention of 80% after 15,000 cycles at a current density of 10 A g −1 . The excellent electrochemical performance is attributed to the use of ZIF-67 as a self-supporting template to suppress the volume expansion and fragmentation of the CoMoO 4 @Co 3 O 4 electrode during charge and discharge.
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ACS Biomaterials Science & Engineering
·
2021
·
IF 4.749
Jiarui Wu,Zhanjie Zhang,Chenxu Qiao,Changfeng Yi,Zushun Xu,Tianyou Chen,Xiaofang Dai
In recent years, the combination treatment of chemotherapy and photothermal therapy (PTT) has emerged as an efficient approach to improve anticancer activity. Here, we combine zeolitic imidazolate framework-67 (ZIF-67) and CuSe to build a multifunctional therapeutic platform (ZIF-67@CuSe@PVP) with an efficient chemo-photothermal therapy for cancer treatment. ZIF-67@CuSe@PVP nanoparticles were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), dynamic light scattering (DLS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), UV–vis, Fourier transform infrared (FT-IR), and nitrogen adsorption–desorption isotherms. These nanoparticles exhibited excellent pH-responsive doxorubicin hydrochloride (DOX) releases due to the decomposition of ZIF-67 and excellent photothermal conversion efficiency (36%) without apparent deterioration during three cycles. In vivo biodistribution evaluation revealed the passive tumor-targeting ability of ZIF-67@CuSe@PVP@DOX via the enhanced permeability and retention (EPR) effect. Both in vitro and in vivo data demonstrated excellent anticancer efficacy of ZIF-67@CuSe@PVP in tumor-bearing mice. This multifunctional therapeutic platform could have certain clinical application potential.
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PubMed
高影响因子
Separations
·
2022
·Vol. 9
·期 11
·340
·
IF 3.344
Zhimin Cai,Yutao Luo,Lu Gan
Herein, we loaded cobalt-based zeolite imidazolate frameworks, ZIF-67 (Co), onto commercial filter paper to prepare catalytic filter paper (ZFP) for the in situ degradation of bisphenol A (BPA) in water by activating peroxymonosulfate. The results showed that ZIF-67 (Co) was densely and uniformly distributed on the surface of the filter paper. The prepared ZFP could effectively degrade BPA in situ through a gravity-driven filtration process. Specifically, when the flow rate of the BPA solution passing through ZFP was lower than 10 mL/min, 0.02 mM of BPA could be completely degraded by ZFP. Furthermore, ZFP showed promising water matrix adaptability, which could provide promising BPA degradation efficiency in a wide pH range or in the existence of multiple anions. The scavenging tests demonstrated that both sulfate radical and hydroxyl radical were generated for BPA degradation, in which hydroxyl radical was the dominant active species. The ZFP also exhibited promising long-time use stability with a high mineralization rate. This study provides a novel method to prepare high-efficient catalyst paper for the in situ organic pollutant removal in water media via a prompt filtration process.Keywords:peroxymonosulfate;degradation;catalytic filter paper;zeolite imidazolate frameworks
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Frontiers in Chemistry
·
2019
·
IF 3.782
Liu Lijuan,Yang Weiting,Gu Dongxu,Zhao Xiaojun,Pan Qinhe
With the rapid growth of nuclear power generation and fuel processing, the treatment of nuclear industry wastewater has become a major problem, and if not handled properly, it will pose a potential threat to the ecological environment and human health. Herein, a chitosan (CS)/ZIF-8 composite monolithic beads with ZIF-8 loading up to 60 wt% for U(VI) removal was prepared, which can be easily removed after use. It possesses a very high adsorption capacity of 629 mg•g−1 at pH = 3 for U(VI) and a well recyclability is demonstrated for at least four adsorption/desorption cycles. X-ray photoelectron spectroscopy (XPS) was carried out to study the adsorption mechanism between uranium and adsorbent, and the chelation of U(VI) ions with imidazole, hydroxyl, and amino groups was revealed. This work shows that CS/ZIF-8 composite can be used as an effective adsorbent for uranium extraction from aqueous solution, and has a potential application value in wastewater treatment.
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高影响因子
POLYMER
·
2020
·
IF 4.231
Zhenguo Gao,Jiaoqiang Zhang,Shijie Zhang,Di Lan,Zehao Zhao,Kaichang Kou
Given the remarkable performances of metal frame works (MOFs) and ferrocene containing polymers (FCPs) in electronic devices, the research on integration of structure and function for collaborative optimization of electromagnetic wave (EMW) absorption are still missing. Herein, surface grafting and main chain polymerization methods have been employed on the FCPs modifying zeolitic imidazolate framework-67 (ZIF-67) respectively. Polydopamine-coated ZIF-67 was precursor for grafting type products (ZIF-67@PDA-Fc), while poly (vinyl ferrocene) was for main-chain type products (ZIF-67@PVF). Furthermore, the calcined products, polyhedron capsules structured Co 3 O 4 @C@α-Fe 2 O 3 and Co 3 O 4 /α-Fe 2 O 3 @C microwave absorbers were obtained from ZIF-67@PDA-Fc and ZIF-67@PVF for higher performance EMW absorption. The crystal, morphological and chemical structure was detected via XRD , SEM, TEM, FTIR, Raman, XPS techniques. The EMW absorbability was calculated according to transmission line theory. In particular, the minimum reflection loss (RL min ) of Co 3 O 4 @C@α-Fe 2 O 3 reached −52.2 dB at the thickness of 3.7 mm with effective absorption band ( f E ) 4.4 GHz. It is worth emphasized that the broadest f E was 6.6 GHz obtained at 2.5 mm with RL min reaching −38.4 dB. Additionally, the EMW absorption mechanism was also studied based on the dielectric and magnetic properties . This investigation will push forward further research and practical application of metal organic compounds-based composites.
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ANALYTICAL CHEMISTRY
·
2019
·
IF 6.35
Shuzhen Lv,Kangyao Zhang,Ling Zhu,Dianping Tang,Reinhard Niessner,Dietmar Knopp
With the introduction of gas-based contactless electrochemical biosensors lies the prospects of separating the sensing interface from the bioassembly platform, enhancing stability, and exploring signal transduction mechanism, all intimately linking to development of immunoassay. Herein, we report on a H2-based electrochemical biosensor whose signals derived from the chemical signal transduction between a H2 and Pd nanowires@ZIF-67 (ZIF: Zeolitic Imidazolate Frameworks) bilayered sensing interface for immunoassay. Dendritic Pt nanoparticles (DPNs) conjugated on the detection antibody were introduced on the interface of a magnetic microsphere according to an immune sandwich assembly between the antigen and antibody. H2 as a bridge originates from DPNs catalyzing NH3BH3 and links biological signals to electrical signals by reacting with Pd nanowires. Nevertheless, the response of Pd nanowires being extremely effected by O2 in air due to the competitive adsorption on the surface of Pd nanostructures as well as the reaction between chemisorbed O (Pd–O) and adsorbed dihydrogen lead to a decrease in H absorption into PdHx and poor sensing responses under low target concentration. Porous ZIF-67 (window aperture 0.331 nm) as a molecular sieve self-assembling on the surface of the Pd nanowires film could easily permeate H2 (kinetic diameter of 0.289 nm), while interferential O2 (kinetic diameter of 0.346 nm) has difficultly passing through the ZIF-67 layer to contact Pd nanowires and achieves a response of a lower concentration target as well as faster response rate. Under optimal conditions, H2-based electrochemical biosensors exhibit great response toward target alpha-fetoprotein (AFP) within a dynamic working range of 0.1–50 ng mL–1 at a detection limit of 0.04 ng mL–1. Our strategy provides a reusable sensing interface, high specificity, and acceptable accuracy for the immunoassay. In addition, it also expands a promising platform for application as a molecular sieve in electrochemical biosensors.
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PubMed
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2025
·
IF 6.3
Tian Li,Dongxue Liu,Sainan Ma,Gang Xu,Buyi Yan,Xiaoyue Hao,Likun Wang,Yong Liu,Gaorong Han
As an indispensable and crucial component in electrochromic devices, transparent gel electrolyte has a significant impact on optical contrast, switching speed, cycling stability, and mechanical robustness. In this study, an engineering by grafting polar bimolecular groups of Terephthalic Dihydrazide (TPHD) onto the surface of ZIF-8 nanoparticles and polymer to enhance performance of gel electrolyte was proposed. Benefiting from the stable pore structure and high dispersion of TPHD modified ZIF-8 (TPHD@ZIF-8), the gel electrolyte doped with 6 wt% TPHD@ ZIF-8 (TGPL-6 %) achieves high initial transmittance of 82 % at 633 nm, representing a 23 % enhancement over the 6 wt% unmodified ZIF-8 doped gel polymer electrolyte layer (ZGPL-6 %). A high ionic conductivity of 1.73 mS/cm was obtained, which was 30 % higher than that of ZGPL-6 % (1.33 mS/cm) and more than four times that of pure GPL (0.37 mS/cm). Young's modulus and tensile strength of TGPL-6 % are 0.0064 and 0.179 MPa, respectively. The TGPL-6 % has been successfully applied in electrochromic devices, achieving a high optical modulation of 38 % and excellent durability. This work provides valuable insights into the rational design of high-performance transparent gel electrolytes for advanced electrochromic devices.
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APL Materials
·
2024
·Vol. 12
·期 1
·
IF 5.3
Luan Pengyan,Yang Zhenxin,Liang Zheng,Li Xiaoliang,Chen Nan,Li Fushun,Li Xuanhe,Su Jiale,Lu Zheng-Hong,Zhu Qiang
Zeolitic imidazolate framework-8 (ZIF-8) is a versatile candidate for next-generation electronics owing to its adjustable lattice and physicochemical properties. However, the utilization of ZIF-8 for the fabrication of solid-state electronics and circuit components, such as field-effect transistors (FETs), has not been realized thus far, primarily due to ongoing debates surrounding its electrical properties. In this work, we fabricated n-type FETs using ZIF-8@ZnO nanorod arrays. A significant hysteresis behavior was observed. It was demonstrated that this hysteresis cannot be assigned to the well-established ferroelectric effect but rather to the polarization of ZIF-8, wherein the electric field of the gate aligns the dipole of 2-methylimidazole through molecular orientation rotation. It was clarified that the process of annealing in air can result in the chemisorption of oxygen on methylimidazole, leading to a limitation in the rotation of methylimidazole. This restriction ultimately causes the depolarization of ZIF-8, resulting in the erasure of hysteresis. This study unfolds the tunable hysteresis behavior of ZIF-8 and its sensibility to oxygen, thereby highlighting the potential applications of ZIF-8 in FETs, nonvolatile memories, and gas sensors.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2020
·
IF 3.573
Jiuli Han,Lu Bai,Haiyan Jiang,Shaojuan Zeng,Bingbing Yang,Yinge Bai,Xiangping Zhang
Ionic liquids (ILs) have become attractive in membranes for CO2 separation because of the designable structure, high CO2 affinity, and good compatibility and stability. Modification of metal–organic frameworks with ILs is an effective strategy to improve the gas separation performance of mixed matrix membranes (MMMs). In this work, task-specific ionic liquids (TSILs) were incorporated to prepare TSIL@ZIF-67/PIM-1 MMMs and improve CO2 separation performance because of the high CO2 solubility and great compatibility toward ZIF-67 and PIM-1. The TSILs (TMGHIM and TMGHPhO) selectively and reversibly interact with CO2 and improve the interfacial compatibility between ZIF-67 and PIM-1, leading to higher CO2/CH4 and CO2/N2 selectivities than that of the ZIF-67/PIM-1 MMM and the directly blended membrane (TSIL/ZIF-67/PIM-1). The 10 wt % TMGHIM@ZIF-67/PIM-1 MMM shows enhanced CO2/N2 and CO2/CH4 selectivities of 13.7 and 10.5, respectively; meanwhile, the CO2 permeability reaches 12,848.5 Barrer and is 2.5 times that of the pure PIM-1 membrane. The TSIL@ZIF-67/PIM-1 MMMs also show good stability against physical aging.
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CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Min-Ping Zhu,Jia-Cheng E. Yang,Xiaoguang Duan,Dan-Dan Zhang,Shaobin Wang,Baoling Yuan,Ming-Lai Fu
Metal organic frameworks (MOFs)-based catalysts are rising stars in advanced oxidation processes (AOPs) to generate reactive oxygen species (ROS). Nevertheless, constructing an affordable and recyclable MOFs-derived catalyst with high reactivity and stability is highly desirable but still challenging. Herein, we unprecedentedly designed a novel CoAl 2 O 4 @γ-Al 2 O 3 pellet (CoAl 2 O 4 @AP) as a heterogeneous catalyst to activate peroxymonosulfate (PMS) toward ROS generation for metronidazole (MNZ) removal. A CoAl 2 O 4 shell was formed on the pellet surface by direct calcination of the surface-nucleated ZIF-67 on γ-Al 2 O 3 pellets. The strong and unique interactions between the Co species of ZIF-67 and γ-Al 2 O 3 resulted in the formation of interfacial CoAl 2 O 4 . The CoAl 2 O 4 @AP exhibited a remarkably higher efficacy for PMS activation than ZIF-67-derived Co 3 O 4 and commercial Co 3 O 4 . The effects of several reaction parameters (i.e., PMS dosage, reaction temperature, initial pH, and background inorganic ions) on MNZ removal were comprehensively investigated and the degradation pathways of MNZ were elucidated. The Co 2+ /Co 3+ and oxygen vacancies of CoAl 2 O 4 @AP were the intrinsic active centers for PMS activation to simultaneously generate a diversity of ROS, among which SO 4 − and 1 O 2 played the decisive roles in MNZ decomposition. After the reaction, CoAl 2 O 4 @AP can be easily separated from the bulk solution and regenerated via a PMS-assisted cleaning process, making the composites highly appealing for practical applications. This pioneering work on constructing microscopic CoAl 2 O 4 -based composites expands the application of MOFs-based catalysts in novel AOPs systems for the treatment of persistent emerging pollutants.
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ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Huaxing Song,Geqian Fang,Zhaohua Gao,Yang Su,Xiaorui Yan,Jian Lin,Wenhua Wang,Wanzhong Ren,Haisheng Wei
Supported metal catalysts play a significant role in heterogeneous catalysis in liquid phase reaction systems, but they usually suffer from a stability problem. Encapsulation of active metal species without the compromise of catalytic performance has been considered as an effective strategy. Here, we report an ultrastable Ru-based catalyst with particle size of around 1.1 nm for selective hydrogenation reaction. The highly dispersed Ru species are covered by the in situ formed porous N–C–ZnO overlayer, which is induced through the transforming of ZIF-8 shell that derives from a ZnO substrate. The resulting Ru/ZnO@N–C–ZnO catalyst can exhibit good stability in the hydrogenation of p-chloronitrobenzene after 20 cyclic runs with 100% selectivity toward p-chloroaniline. Comparatively, the naked Ru/ZnO catalyst with larger Ru particles shows serious metal leaching issue with inferior stability and poor selectivity. It is revealed that the excellent performance of Ru/ZnO@N–C–ZnO is attributed to the porous overlayer, which strengthens the bonding of Ru nanoparticles on ZnO.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Feng Xiao,Haoqun Yao,Ruiyang Qiu,Wenjie You,Zichao Cai,Xiaoyu Wang,Weikang Hu,Weijun Liu,Zijian Wang
Bacterial infection impairs skin wound healing, leading to a growing healthcare challenge. Biomolecular microneedles are developed to deliver the antibiotics, offering desirable broad-spectrum antibacterial activity for accelerating wound healing. However, the application of antibiotics is limited owning to potential drug resistance. Reactive oxygen species (ROS) have recently emerged as the next-generation antibacterial agents, due to their distinctive advantages over antibiotics. It remains a challenge to endow the antibiotic-free microneedles with enhanced ROS-production and antibacterial efficiency. Herein, a core-shell ZIF-67/MoS 2 (ZM) heterojunction was synthesized using a hydrothermal method. Compared to ZIF-67 nanoparticles, ZM heterojunction not only generated more photo-generated electrons, but also reduced the energy loss during electron transfer. Thus, the photocatalytic potential of ZM heterojunction got significantly improved for ROS production. ZM heterojunction was integrated into the double-layer gelatin methacryloyl/ZM heterojunction (GMZM) microneedle. The photothermal nanozyme-like activity, broad-spectrum antibacterial activity, and biocompatibility of GMZM microneedle were verified. Under NIR irradiation, GMZM microneedle completed 98.02 ± 1.22 % of wound closure period within 16 days. The overall application effect of GMZM microneedle was not inferior to that of commercial wound dressings from 3 M Co., Ltd. In conclusion, this study developed an antibiotic-free GMZM microneedle demonstrating superior performances, showing great potential for the treatment of infected wounds.
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