DALTON TRANSACTIONS
·
2023
·Vol. 52
·期 41
·14973-14981
·
IF 4
Xiangyu Zhang,Hong Li,Yanhui Li,Xianhui Wang,Hongbin Wang,Wenrong Yang,Jingquan Liu,Da Li
To replace the current expensive precious metal catalysts for water electrolysis, it is important to develop inexpensive and powerful bifunctional catalysts for hydrogen production. It is an effective way to improve catalytic performance using excellent templates and elemental doping. Here, a hierarchical structure Fe-Co3S4/MoS2 was synthesized using an Fe–ZIF precursor prepared by ion exchange, followed by hydrothermal sulfuration and annealing. It required overpotentials of only 93 mV and 243 mV to achieve a current density of 10 mA cm−2 in the HER and OER, respectively. It also showed excellent catalytic performance for overall water splitting, requiring only 1.42 and 1.71 V to achieve current densities of 10 and 100 mA cm−2 in 1 M KOH. The catalyst also demonstrated excellent ultra-long-term stability. The superb catalytic performance and stability can be attributed to the Fe doping, exposing more active sites while retaining the highly stable framework of the ZIF. The component modulation of Co3S4 and MoS2 by Fe doping induced high intrinsic activity and excellent transfer coefficients. This work presents a novel approach to prepare noble metal-free catalysts with highly stable rich interfaces and defects for overall water splitting.
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PubMed
高影响因子
Separations
·
2021
·Vol. 8
·期 2
·22
·
IF 2.777
Pei Chen,Xiaoman Li,Xuemin Yan,Minglei Tian
(1) Background: ZIF-67 is one of the most intriguing metal–organic frameworks already applied in liquid adsorption. To increase its adsorption performance, dual ionic liquids were immobilized on ZIF-67 in this research; (2) Methods: The obtained sorbent was used to adsorb aristolochic acid I (AAI) in standard solutions. Then, the sorbent was applied in solid-phase extraction to remove AAI fromFibraurea Recisa Pierreextracted solution. (3) Results: By analyzing the adsorption models, the highest adsorption capacity of immobilized sorbent (50.9 mg/g) was obtained at 25 °C within 120 min. In the SPE process, 0.02 mg of AAI was removed per gram of herbal plant, the adequate recoveries were in the range of 96.2–100.0%, and RSDs were 3.5–4.0%; (4) Conclusions: The provided experimental data revealed that ZIF-67@EIM-MIM was an excellent potential sorbent to adsorb and remove AAI from herbal plant extract, and the successful separation indicated that this sorbent could be an ideal material for the pretreatment of herbal plants containing AAI.Keywords:dual ionic liquids;metal–organic framework;aristolochic acid I;Fibraurea Recisa Pierre
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JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
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2022
·
IF 6.76
Yizhen Yu,Bingzhi Li,Yinsha Wei,Xinyue Ren,Fengsai Bie,Yang Xu,Ri Qiu,Xiaoguang Li,Yibo Ouyang
In the harsh environment, the corrosion of Cu leads to the failure of pipelines, condenser, printed circuit board and so forth. Thus, protecting Cu from corrosion is critically important from both science and engineering backgrounds. In this report, the hierarchical structure compositing dendritic Cu and ZIF-67 is prepared onto Cu by a two-step electrodeposition protocol. After thiol modification and oil infusion, bio-inspired superhydrophobic surface (SHS) and slippery liquid-infused porous surface (SLIPS) is respectively achieved, and sophisticated techniques are used for characterizing chemical composition, morphology, topology and wettability. Scanning Kelvin probe is employed to know the surface potential distribution before and after the biomimetic transformation. Using different electrochemical approaches, the corrosion inhibition effect is elucidated. In 3.5 wt% NaCl corrosive medium, |Z| 0.01Hz of SLIPS is as high as 1.35 × 10 8 Ω·cm 2 at the initial immersion stage. The value is remarkably enhanced compared with SHS (6.76 × 10 4 Ω·cm 2 ) and bare Cu (8.74 × 10 3 Ω·cm 2 ). After soaking for 168 h, |Z| 0.01Hz value of SHS and SLIPS is 3.84 × 10 4 Ω·cm 2 and 4.93 × 10 6 Ω·cm 2 , illustrating that SLIPS has high resistance to protect Cu from corrosion.
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CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Rujing Xue,Yina Zhuge,Guoliang Liu,Fujuan Liu
ZIF-L, a metal-organic framework (MOF) material, has a two-dimensional (2D) foliation, a large specific surface area, excellent thermal stability and CO 2 adsorption performance, respectively. In this work, in order to further improve the thermal insulation performance of SiO 2 aerogel composite fabrics , ZIF-L powder was first prepared as a reinforcing particle, and then added to silica aerogel. Finally, SiO 2 /AF/ZIF-L composites were obtained by solution impregnation method. The influence of different ZIF-L concentrations on the insulation performance of composites and their influencing factors were studied. Furthermore, these composites were fully characterized using BET measurement, Instron 5967, precision transient thermal performance tester, infrared thermal imager, insulation performance test, thermogravimetric analyzer, and dynamic thermomechanical analyzer. The results showed that 0.12% SiO 2 /AF/ZIF-L composites had excellent thermal insulation performance, with a thermal conductivity as low as 0.029 W/(m·K). In addition, SiO 2 /AF/ZIF-L composites fabricated by atmospheric drying method had the best thermal insulation performance under the conditions of gel time of 24 h, hydrolysis time of 5 h, and polycondensation pH value of 5–6.
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Journal of Energy Storage
·
2023
·
IF 9.4
Jiongfan Wang,Xin Chen,Lingling Chen,Xinyu Li,Jianrong Xiao
The shuttle effect of polysulfide and slow reaction kinetics has hindered the commercialization of lithium–sulfur batteries. Here, metal organic framework (MOF)-derived nitrogen-doped carbon was used as templates, and the continuous interspersed filamentary network structure of multi-walled carbon nanotubes (MWCNT) was used as a modifier to synthesize Co-NC@MWCNT. The exposure of Co-MOF with a high density of catalytic sites in the pores effectively improves the sulfur stability capacity of the composite and inhibits the shuttle effect. The outermost layer of coated MWCNTs and the intermediate layer of N-doped porous carbon effectively protected the Co 2+ active site of the dodecahedral configuration from easy deactivation and agglomeration. The prepared Co-NC@MWCNT composite had an initial discharge capacity of 1240 mA h g −1 (0.1C), it maintained a low decay rate of 0.054 % after 1000 cycles (0.5C). The graphite-like layer gap and multilayer tube structure of the networked MWCNT can effectively mitigate volume expansion during charging and discharging and provide Li + transport channels to improve electrical conductivity . Moreover, the energy storage devices developed as part of this work have excellent electrochemical properties and have a noteworthy industrial potential.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2023
·
IF 7.2
Yan Shang,Jing Xu,Yue Ma,Zezhong Li,Qian Li
Photocatalytic hydrogen production was a potential strategy to solve energy shortage and environmental pollution. One of the valuable research directions for improving photocatalytic efficiency was to prepare catalysts in an efficient and low-cost way. Lamellar Sm 2 WO 6 and dodecahedron Zeolitic Imidazolate Framework-67 (ZIF-67) have been prepared successfully based on morphology control. Sm 2 WO 6 /ZIF-67 was prepared by a novel in situ growth scheme, which was confirmed by crystal structure, morphology and elemental composition analysis . The close interaction between Sm 2 WO 6 and ZIF-67 was confirmed by photoelectrochemical measurements. Based on the design of band structure , the S-type heterojunction was constructed. The research results of this paper provided a reference for exploring non-noble metal composite materials and demonstrated great potential in photocatalytic.
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ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Baojie Dou,Shaojian Lin,Yafang Wang,Lin Yang,Anrong Yao,Hongjiang Liao,Siyao Tian,Jiaojiao Shang,Jianwu Lan
The complex wastewater containing water-soluble dyes and water-insoluble oils has given rise to significant environmental concerns that demand urgent remediation. Herein, a novel “smart” multifunctional sponge (ZIF-8@PMS) stepwise decorated with ZIF-8 nanoparticles and CO2-responsive copolymer (poly(2-(diethylamino) ethyl methacrylate-co-3-(trimethoxysilyl)propyl acrylate-co-stearyl methacrylate) was successfully prepared for CO2 controllable oil/water separation and dyes removal. The results revealed that the sponge coated with CO2-responsive copolymer for three cycles (ZIF-8@PMS-3) exhibited optimal comprehensive properties. The ZIF-8@PMS-3 had excellent compressive-resilient characteristics and chemical stability. As expected, it displayed tunable wettability and charged state under the regulation of CO2. Based on these features, ZIF-8@PMS-3 presented highly efficient removal of oil and dyes, even for the dye-containing oil/water emulsions, via a synergistic combination of adsorption and separation methods. The adsorption capacity for oil and various organic solvents ranged from 21.3 to 50 g g–1. The maximum adsorption capacities toward anionic dyes: methyl orange with 1205.89 mg g–1 and methyl blue with 880.00 mg g–1 in the presence of CO2 through electrostatic interaction. In the absence of CO2, it achieved maximum adsorption capacities for cationic dyes, including malachite green with 1246.15 mg g–1 and rhodamine B with 203 mg g–1, primarily driven by π–π interactions. According to distinct adsorption mechanisms, ZIF-8@PMS-3 could selectively adsorb either anionic or cationic dyes by exploiting CO2 as a trigger. Furthermore, the separation efficiencies for both types of oil/water emulsions surpassed 99.9%, with respective fluxes of 1566.99 L m–2 h–1 (water-in-oil emulsion) and 310.37 L m–2 h–1 (oil-in-water emulsion). Additionally, the as-prepared sponges exhibited remarkable antibacterial properties and exceptional recyclability. Therefore, the ZIF-8@PMS-3 holds substantial promise for potential applications in practical industrial wastewater treatment.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Mingzhi Chen,Sifan Zhang,Chenyu Zhu,Huan Zhang,Lihua Zhu,Yingliang Feng,Jiexiang Wang,Qian Yang,Bingqian Liu,Wentao Xu
MOFs (metal-organic frameworks) materials have been widely applied in sensing and catalysis, with the advantages of large surface area, numerous active sites, controllable size and morphology. Herein, we report the preparation of the caged PdZn/NC catalysts with the PdZn alloy nanoparticles on carbon doping with nitrogen owing high electrocatalytic performance by using a hydrothermal synthesis and pyrolysis strategy. The caged structure and PdZn alloy are demonstrated by a series of advanced characterization techniques. The material combines the advantages of bimetallic alloy and MOFs cage structure to realize highly efficient electrocatalytic oxidation of ethanol oxidation reactions (EOR) and methanol oxidation reactions (MOR) simultaneously. Electrochemical test results show that PdZn/NC-2 has a mass activity of 2.41 A mg −1 pd and 2.64 A mg −1 pd for methanol and ethanol oxidation, respectively, which is 12.68 times (MOR) and 14.67 times (EOR) higher than that of commercial Pd/C. This is probably attributed to the cage-like structure of PdZn/NC separating the Pd nanoclusters , resulting in high Pd dispersion. Simultaneously, the electronic property of Pd is adjusted after the formation of the complete PdZn alloy, improving the desorption of the carbon-based intermediates from the Pd active sites. This increases the CO poisoning resistance, resulting in good alcohol electrocatalytic oxidation activity and stability.
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JOURNAL OF MEMBRANE SCIENCE
·
2023
·
IF 9.5
Wenxin Wang,Zhichao Hou,Hanxiao Zhang,Xinyu Ma,Gang Wang,Jinlei Miao,Tingting Fan
Whereas harsh environmental wastewater purification and polluted air filtration is eagerly desired, traditional membranes cannot meet such demands due to its poor chemical/thermal resistance which remains a great challenge. Herein, a harsh environmental-tolerant zeolitic imidazolate frameworks (ZIF-8) @polyphenylene sulfide (PPS) membrane with tunable hierarchical structure for efficient oil/water separation and air filtration under extreme conditions was proposed. Highly robust and flexible biomimetic ZIF-8@PPS membrane with lotus-leaf papillary structure was successfully developed via large-scale melt-blown PPS nonwovens followed by in-situ growth porous ZIF-8. The biomimetic ZIF-8@PPS membrane truly combining the advantages of special polymeric PPS and inorganic zeolite for harsh environmental wastewater and air treatment, which exhibits smart switchable super-oleophobic/hydrophobic characteristic and PM 2.5 purification performance under harsh water/oil mixture (strong acid/alkali) and high temperature (exceed 200 °C) conditions. The biomimetic ZIF-8@PPS membrane exhibits extremely high flux (28569.4 L m -2 h -1 ) and separation efficiency (99.932%) for oil/water separation, and excellent filtration efficiency (99.5%) for PM 2.5 removal. Impressively, the robust and flexible ZIF-8@PPS membrane with strong chemical/thermal resistance could still maintain excellent separation/filtration performance even after numerous cyclic tests under harsh environments. The harsh environmental tolerant ZIF-8@PPS membrane with large-scale roll-to-roll production ability holds great promise for environmental protection under extreme conditions.
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MICROCHEMICAL JOURNAL
·
2023
·
IF 4.8
Yongfa Cheng,Lingzhi Cheong,Yongyong Li,Yongjiang Lou,Shiqian Fu
The high toxicity and bioaccumulation effects of nitroaromatic pesticides and their serious environmental risks have led to a sharp increase in public concern about pesticide residues. Present work developed a direct, rapid, sensitive and reliable Candida rugosa lipase (CRL)@ the ordered macro-microporous ZIF-8 (MAC-ZIF-8) nanofibers biosensor (CRL@MAC-ZIF-8 nanofibers) for methyl parathion and chlornitrofen residues detection in lake water. The biosensors fabricated by the CRL@MAC-ZIF-8 nanofibers demonstrated wide linear range for both methyl parathion (0.5–114 µM) and chlornitrofen (1–40 µM) detection. The biosensors also demonstrated good reusability for methyl parathion detection with retainment of more than 97% of its initial response after scanning continuously for 100 times. During 1 month storage stability test at 4 °C, the fabricated biosensor demonstrated excellent stability for methyl parathion detection with retainment of 86%-100% of its initial response. Meanwhile, the biosensors also demonstrated good recovery rates when the biosensors were used to detect methyl parathion and chlornitrofen residues in lake water sample.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Siyuan Liu,Jingxing Liu,Zefen Wang,Zhiqi Wu,Yiliang Wei,Pengru Liu,Xiongdiao Lan,Yexin Liao,Ping Lan
Glucose oxidase (GOx) has a great application potential in the determination of glucose concentration. However, its sensitivity to the environment and poor recyclability limited its broader application. Herein, with the assistance of DA-PEG-DA, a novel immobilized GOx based on amorphous Zn-MOFs (DA-PEG-DA/ [email protected] /PDA) was developed to impart excellent properties to the enzyme. SEM, TEM, XRD, and BET analyses confirmed that GOx was embedded in amorphous ZIF-7 with ∼5 wt% loading. Compared with free GOx, DA-PEG-DA/ [email protected] /PDA exhibited enhanced stability, excellent reusability, and promising potential for glucose detection. After 10 repetitions, the catalytic activity of DA-PEG-DA/ [email protected] /PDA can maintain 95.53 % ± 3.16 %. In understanding the in situ embedding of GOx in ZIF-7, the interaction of zinc ion and benzimidazole with GOx was studied by using molecular docking and multi-spectral methods. Results showed that zinc ions and benzimidazole had multiple binding sites on the enzyme, which induced the accelerated synthesis of ZIF-7 around the enzyme. During binding, the structure of the enzyme changes, but such changes hardly affect the activity of the enzyme. This study provides not only a preparation strategy of immobilized enzyme with high activity, high stability, and low enzyme leakage rate for glucose detection, but also a more comprehensive understanding of the formation of immobilized enzymes using the in situ embedding strategy.
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高影响因子
CELLULOSE
·
2023
·Vol. 30
·期 7
·4353-4371
·
IF 5.7
Wang Peiwen,Chen Congjin,Shen Hangyu,Wei Jinrou,Lan Yi,Liao Xiufen,Fan Hui,Hu Huayu,Zhang Yanjuan,Huang Zuqiang
Ciprofloxacin (CIP) contamination can induce the growth of antibiotic-resistant bacteria, which poses a great threat to the environment. Herein, a composite adsorbent material, sodium lignosulfonate/chitosan@ZIF-8 (SLS/CS@ZIF-8), was synthesized by introducing sodium lignosulfonate into chitosan foams (CS-FM) and then loading ZIF-8 onto the resulting foams (SLS/CS-FM) by in situ immobilization to effectively remove CIP from water. The adsorption behaviour and mechanism were studied through batch experiments and characterization analysis. The results showed that the maximum adsorption capacity of SLS/CS@ZIF-8 was 413 mg/g with a CIP concentration of 250 mg/L at 303 K, which was more than most previously reported adsorbents. The CIP adsorption of SLS/CS@ZIF-8 was better described by the pseudosecond-order kinetic model and Langmuir isothermal model. The adsorption was a spontaneous and endothermic physical adsorption process with increased entropy. The adsorption involved electrostatic interactions, hydrogen bonding interactions and π-π interactions. This work provides a potential adsorbent for the effective removal of CIP from wastewater and a new, low-carbon, green chemical technology for the high-value utilization of lignin.
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高影响因子
危险品化学品经营许可证（带存储）