JOURNAL OF MATERIALS SCIENCE
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2023
·Vol. 58
·期 41
·16033-16045
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IF 4.5
Tian Yuhao,Li Ting,Cai Weijie
Recently, bio-ethanol reforming with CO 2 (EDR) has been considered as one of the environment-friendly processes to diminish the emission of greenhouse gas, along with increasing the production of value-added syngas. However, designing high-performance catalysts is still a great challenge. In this work, MOF-derived CoMO x (M:Ce,Zr,Zn) catalysts were applied in EDR reaction for the first time to explore the influence of support types on catalytic performance. Characterization of the investigated catalysts by XPS, XRD, H 2 -TPR, Raman, TEM and BET depicted the difference in cobalt dispersion, specific surface area as well as Co-support interaction. Indeed, H 2 -TPR and XPS results revealed stronger Co-Ce interaction and the smaller particle size of Co 3 O 4 in Co-CeO 2 catalyst which contributed to higher activity. Indeed, 100% of ethanol conversion was obtained at 550 °C and the formed H 2 /CO ratio (1.18) was suitable for the downstream Fischer–Tropsch process. Meanwhile, no remarkable decline of ethanol conversion and product distributions occurred after 40 h stability tests. The findings implied that EDR process might be suitable to consume greenhouse gas and reduce carbon footprint. Characterization results of the used catalysts indicated that Co-CeO 2 catalyst presented an outstanding anti-aggregation and anti-coking property. Herein, the effect of support type in this work might provide guidance for the design of high-performance catalysts for other heterogeneous reactions operated at high temperature. Graphical abstract
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SEPARATION AND PURIFICATION TECHNOLOGY
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2023
·
IF 8.6
Ye Bian,Zhuolun Niu,Chencheng Zhang,Yue Pan,Yong Wang,Chun Chen
Metal-organic frameworks (MOFs) are currently one of the most attractive porous materials. Integrating MOFs into an organic polymer matrix is considered a promising approach for controlling air pollutants. Especially, the nanoscale miniaturization of MOFs is promising to serve as membranes for efficient air quality control. Here, we proposed the use of spray-initiation as a facile and rapid methodology to assemble homogeneous growth of nanoMOFs on the electrospun fibers, yielding the composite fiber with diameters smaller than 300 nm. The developed ZIF-8-encrusted nanofiber membrane achieved superior filtration performance. Compared with the filter without MOF growth, the MOF-encrusted nanofiber filter achieved enhanced filtration efficiency and almost no change in pressure drop. For the most penetrating particles, the ZIF-8-encrusted nanofiber filter can even reach a 10% increment. This work shows that introducing the MOF nanoparticles onto the nanofibers with homogenous distribution can significantly improve the capacity of the filters in controlling submicron particles, and provide an important reference for the rational design of structures of composite materials.
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Food Science and Human Wellness
·
2023
·
IF 7
Linglin Fu,Yanzhuo Du,Jinru Zhou,Huan Li,Minzi Wang,Yanbo Wang
Gluten, known as the major allergen in wheat, has gained increasing concerns in industrialized countries, resulting in an urgent need for accurate, high-sensitive, and on-site detection of wheat gluten in complex food systems. Herein, we proposed a silver nanoparticles (AgNPs)/metal-organic framework (MOF) substrate-based surface-enhanced Raman scattering (SERS) sensor for the high-sensitive on-site detection of wheat gluten. The detection occurred on the newly in-situ synthesized AgNPs/MOF-modified SERS substrate, providing an enhancement factor (EF) of 1.89 × 10 5 . Benefitting from the signal amplification function of AgNPs/MOF and the superiority of SERS, this sensor represented high sensitivity performance and a wide detection range from 1 × 10 -15 mol/L to 2 × 10 -6 mol/L with a detection limit of 1.16 × 10 -16 mol/L, which allowed monitoring the trace of wheat gluten in complex food system without matrix interference. This reliable sandwich SERS sensor may provide a promising platform for high-sensitive, accurate, and on-site detection of allergens in the field of food safety.
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JOURNAL OF MOLECULAR LIQUIDS
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2023
·
IF 6
Hongyu Liu,Mengxin Xie,Bingli Pan,Bingchan Wang,Longlong Zhang,Yuxuan Zhou,Ning Li,Enxi Yue,Honggang Wang
The synergistic effect of nanoparticles can effectively improve the tribological performances of base oils. In this study, a novel lubricant additive by embedding 2D FeOCl on 2D Zn − MOF was reported for the first time in order to boost the tribological performances of polyethylene glycol (PEG200). The FeOCl/Zn − MOF prepared by a facile microwave assisted strategy was found to be a typical flower-like appearance, where FeOCl nanosheets decorated on the surface of Zn − MOF sheets. Owing to the electron transfer and synergistic effect between FeOCl and Zn − MOF, the novel FeOCl/Zn − MOF effectively reduced the coefficient of friction by 48 % and wear scar diameter by 88 % at the loading of 0.4 wt% FeOCl/Zn − MOF in the base oil. The work suggests the face-to-face combination of FeOCl and Zn − MOF for enhanced tribological performances, representing a new strategy to prepare efficient lubricant additives using assembled 2D nanomaterials.
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TALANTA
·
2023
·
IF 6.1
Yongzhe Niu,Kai Kang,Beibei Wang,Lanyue Wang,Congwei Li,Xiang Gao,Zhenzhen Zhao,Xueping Ji
Single-atom nanozymes (SANs) can significantly enhance the sensitivity and selectivity of electrochemical sensing platforms due to the homogeneity of their active sites, full atom utilization, and high catalytic activity. In this study, we demonstrate the synthesis and characterization of a high-density Co-based single-atom nanozyme anchored on activated MOF-derived porous carbon (Co-AcNC-3) via a cascade anchoring strategy for ultrasensitive, simultaneous electrochemical detection of catechol (CC) and hydroquinone (HQ). The Co-AcNC-3 displays a large specific surface area , high defectivity, and abundant oxygen-containing groups, with Co atoms being atomically dispersed throughout the carbon support via Co–N bonds. The Co-AcNC-3 biosensor exhibits superior electrochemical signals for CC and HQ, with linear ranges of 4.0 μM–300.0 μM. and detection limits of 0.072 μM and 0.034 μM, respectively. Moreover, the Co-AcNC-3 biosensor has shown excellent performance in accurately detecting CC and HQ in actual samples. Our findings highlight the potential of the proposed Co-AcNC-3 biosensor as a reliable and promising sensing platform for determining CC and HQ.
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CHEMICAL ENGINEERING JOURNAL
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2023
·
IF 15.1
Yihua Lv,Jingyan Tian,Zebin Chen,Jianhao Wang,Li-An Ma,Lei Zhang,Song Chen,Qianting Wang,Xiaoyun Ye
The development of high-performance microwave-absorbing materials (MAMs) to address electromagnetic (EM) pollution has become a focus of attention for researchers. The combination of MXene and heterogeneous MOF with complementary advantages can be designed into novel composites with promising microwave absorption (MWA) properties. In this paper, the M/CoNi/C series composites derived from MXene/CoNi-MOF were prepared by in situ hydrothermal-pyrolysis process. The effects of the molar ratio of Co 2+ /Ni 2+ and the addition amount of MXene on the morphology and EM parameters of the composites were investigated, and then the MWA performance and mechanisms of M/CoNi/C composites were analyzed. The results showed that the uniformly distributed CoNi and graphitic carbon in the M/CoNi/C composites formed a core–shell structure, and TiO 2 nanoparticles modified on the carbon lamellas originated from MXene. The minimum reflection loss (RL min ) value of the optimized M/Co 1 Ni 1 /C reaches −61.34 dB only at the thickness of 1.9 mm, and the effective absorption bandwidth (EAB) value is 5.2 GHz only at 1.7 mm. The RL min values in the thickness range of 1.5–3.0 mm are all less than −30 dB. The tunable microstructures, multiple interfacial polarizations, and dielectric-magnetic synergies optimize the impedance matching, which is conducive to achieving good broadband EM wave absorption performance. This paper provides a reference strategy for the design and construction of a high-performance MXene-based microwave absorber with controllable morphology and electromagnetic parameters.
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JOURNAL OF MOLECULAR STRUCTURE
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2023
·
IF 3.8
Zhanqing Yu,Xiaoli Hu,Zhongmin Su
Cobalt-based metal-organic frameworks (MOFs) have been used as catalysts to remove macromolecular organic pollutants from wastewater. In this work, a novel type of cobalt-based MOF, CUST-593, was synthesized from cobalt nitrate hexahydrate (Co(NO 3 ) 2 ·6H 2 O), 2,2-bipyridine (BIPY), and 4,4ˊ,4ˊˊ-nitrilotrisbenzoic acid (NTB) using solvothermal method. The catalytic properties of CUST-593 for degrading dyes in water were then investigated. CUST-593, with the chemical formula {Co(NTB)(BIPY)(H 2 O)·0.5H 2 O·0.1DMA}, exhibited excellent catalytic activity in degrading dyes such as methyl orange (MO) and rhodamine B (RhB) in aqueous solutions. CUST-593 has a multi-layered structure, connected by carboxylate hydrogen bonds, which is beneficial to improving its water stability. Synthetic test results showed that CUST-593 effectively attacked dyes by primarily generating sulfate radicals (SO 4 •− ) and a portion of hydroxyl radicals (•OH). Under the testing conditions, MO removal efficiency reached approximately 95 %. Moreover, CUST-593 exhibited remarkable cycling catalytic properties, broad pH range applicability, and long-term effectiveness. A mechanism for the degradation of dyes by CUST-593 was proposed. The experimental findings in this study collectively support the conclusion that CUST-593 serves as a green and environmentally friendly catalyst for the degradation of dyes in polluted water.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2023
·
IF 8.6
Tengru Xie,Luwei Wang,Hexiang Wang,Chuan Cao,Chenliu Tang,Xiang Hu
Antibiotics cannot be completely removed through traditional treatment technologies, leading to their accumulation in the aquatic environment and posing a serious threat to human health. MOF-derived carbon is a promising material for the degradation of antibiotics. Herein, in this study, a novel Co/Ce-MOF electrode was rapidly prepared by one-step electrodeposition at room temperature. Then the Co/Ce-MOF electrode was carbonized to obtain MOF-derived carbon composite electrode (Co/Ce-C350Air). The ceftazidime (CAZ) degradation efficiency achieved 96.59% within 60 min under the optimum conditions ([CAZ] = 5 mg/L, [Na 2 SO 4 ] = 50 mM, current density = 0.8 mA/cm 2 , electrode gap = 2 cm and initial pH = 5.6) and the degradation process of CAZ conformed to first-order reaction kinetics. Furthermore, the removal efficiency of CAZ maintained at 94.92% even recycling for 6 times, demonstrating the good electrochemical stability of the Co/Ce-C350Air composite anode. The synergistic effect between Co and Ce metals improved the catalytic performance and stability of the Co/Ce-C350Air electrode. Radical quenching experiments and electron paramagnetic resonance (EPR) spectra results revealed that surface hydroxyl radicals were the main active species in the degradation of CAZ. The main intermediate products were identified by high-performance liquid chromatography-mass spectrometry (HPLC-MS) and the possible degradation pathway was proposed. In addition, toxicity tests with Ecological Structure Activity Relationships (ECOSAR) software results indicated that the toxicity of the intermediate products was lower than that of CAZ. This work provided a safe and effective strategy for the degradation of antibiotics in the electrochemical oxidation system.
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DESALINATION
·
2023
·
IF 9.9
Xuanting He,Xiaohui Liu,Jiaxiang Liu,Boyu Li,Huachen Liu,Wenquan Tao,Xiaoxiang Xu,Zhuo Li
Complex multi-component pollutant-oil-water emulsions have caused serious environmental problems and increased the difficulty of purification treatment in the last few decades. The membrane based on two-dimensional (2D) materials can rationally control the interlayer distance , thus improved the separation performance of the membrane for complex wastewater. We herein reported a composite membrane, in which 2D metal-organic frameworks (MOFs) Co -CAT-1 with super-hydrophilicity cross-linked by polyethylene imine (PEI) was integrated into graphene oxide (GO) and then coated on polyvinylidene fluoride (PVDF) membrane (CPG membrane). The CPG membrane exhibited highly efficient in separating oil-water (including crude oil) emulsions, achieving a flux of 219 L∙m −2 ∙h −1 ∙bar −1 and a separation efficiency of 99.2 %. Moreover, the separation efficiency for complex emulsions after several cycles was maintained >99 % for dyes and 76 % for heavy metal ions (Ni 2+ , Pb 2+ , Zn 2+ ). The remarkable fouling resistance and reusability of CPG membrane in purifying complex oil-in-water emulsions can be attributed to their internal cross-linking, electrostatic interactions, hydrogen bonding attraction, and π-π stacking. Molecular dynamics simulations were employed for in-depth studies on the separation processes of dye- and heavy metal ions-emulsions, revealing the mechanisms of mass transfer within the membrane. This work aims to construct stable and multifunctional membranes for separating pollutant-oil-water emulsions with multi-component.
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JOURNAL OF THE AMERICAN CERAMIC SOCIETY
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2023
·Vol. 107
·期 2
·719-735
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IF 3.9
Mojtaba Rostami,Milad Jourshabani,Fatemeh Davar,Ghodsi Mohammadi Ziarani,Alireza Badiei
In this research, the ultrasound (US) technique was applied as a facile synthesis method for preparing the black TiO 2 -g-C 3 N 4 type II heterojunction, coupled with a Schottky junction MOF (ZIF-67)-derived x wt% Co 3 S 4 /nitrogen-doped carbon (NC) ( x = 3, 10, and 15) with hollow nanobox (HNB) morphology, as a smart nanoheteroarchitecture (NHA) photocatalyst to enhance visible-light photocatalytic activity. Additionally, the solvothermal synthesis route was employed to fabricate the MOF (ZIF-67)-derived Co 3 S 4 /NC cubic hollow nanoboxes (CHNBs) before the pyrolysis process. The black TiO 2 -g-C 3 N 4 wt% Co 3 S 4 /NC (TiCN-15% CoS/NC) NHAs exhibited high photocatalytic activity in degrading methylene blue. The synergetic effect of all components in black TiCN- x wt% CoS/NC NHAs resulted in efficient electron-hole pair separation and charge mobility on Co 3 S 4 /NC HNB and g-C 3 N 4 surfaces, which led to a highly effective recombination rate of charge carriers and an excellent improvement in photocatalytic performance.
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Journal of Energy Storage
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2023
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IF 9.4
Dandan Yan,Min Li
Solar thermal conversion technology employing phase change composites is an available strategy for solar thermal energy utilization and storage. In this work, a novel metal-organic framework (MOF)-based phase change composites were successfully constructed through vacuum impregnation method. The stearic acid (SA) was served as phase change materials , and the SA-modified MOF (HS) with CuO derived from MOF (HS@CuO composites) was assembled to be support materials, which composed the SA/HS@CuO phase change composites. HS@CuO composites could well prevent the SA leakage over phase change point and endowed the phase change composites outstanding form stability (SA loading rate: 71.8 %) and thermal storage ability (ΔH m : 158.24 J/g). Furthermore, the SA/HS@CuO possessed greatly strengthened thermal conductivity (improved by 3.8 times over SA) and extraordinary solar thermal conversion performance (η: 95.9 %). These results powerfully suggest that the innovative phase change composites own promising potentials in not only solar energy utilization and development but also thermal storage and management fields.
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DIAMOND AND RELATED MATERIALS
·
2023
·
IF 4.1
Ce Liang,Jian Guo,Liufei Yue,Mingyang Wang,Jicai Liang,Xiaofeng Wang,Yi Li,Kaifeng Yu
SnO 2 has a high specific capacity, low price, and a wide range of sources, but the anode material made from SnO 2 is extremely unstable due to volume expansion. In this work, SnO 2 nanoparticles were prepared using Sn-MOF as the precursor and compounded with sunflower seed shell porous carbon (SSSC) in a solvothermal manner to obtain a high-performance lithium-ion battery anode. The size of SnO 2 nanoparticles prepared using Sn-MOF as the precursor is uniform, only 10–20 nm, which can fully alleviate the volume expansion of SnO 2 . On this basis, MOF-SnO 2 is anchored onto the porous carbon of the sunflower seed shell, which can provide more lithium insertion sites and further inhibit the volume expansion of SnO 2 . The composite anode in this article has a stable specific capacity of 1050.8 mAh g −1 after 100 cycles at a magnification of 0.2C and a stable specific capacity of 512.9 mAh g −1 after 100 cycles at a magnification of 2C.
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