CHEMICAL ENGINEERING JOURNAL
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2022
·
IF 16.744
Lan Ding,Fenghua Bai,Burenbayaer Borjigin,Yuning Li,Huiqin Li,Xiaojing Wang
Solar-energy-driven CO 2 conversion into valuable chemical fuels holds great renewable potential. However, most photocatalysts' weak CO 2 adsorption limits more artificial photosynthesis for further utilization. Herein, we present an in situ assembling approach to produce stable Cs 2 AgBiBr 6 /Ce-UiO-66-H composite, in which a tight contact interface between the two participated components was constructed. Benefiting from the photocatalytic properties and high adsorption capacity for CO 2 , the optimized 20Cs 2 AgBiBr 6 /Ce-UiO-66-H adsorption-photocatalyst exhibits outstanding performance for reductive CO 2 deoxygenation with considerable CO generation rate (309.01 μmol g −1 h −1 ) under simulated solar light irradiation with 300 W Xe lamp, which is about 2.1 and 2.7 times than that of pure Cs 2 AgBiBr 6 and Ce-UiO-66-H, respectively. The excellent catalytic conversion of CO 2 is ascribed to the effective solar harvest and quickly photo-excited carriers’ separation in such assembled architecture. Importantly, due to the in-situ synthesis, Cs 2 AgBiBr 6 QDs are intercalated in the Ce-UiO-66-H frameworks and it could lead to improved stability and induce abundant oxygen vacancies in Cs 2 AgBiBr 6 /Ce-UiO-66-H, which can maintain unchangeable CO 2 conversion rate under wet air with consecutive ten hours of the recycling test. In this work, the combining metal–organic frameworks and lead-free halide perovskite provide great potential for artificial photocatalytic CO 2 -to-CO conversion under a mild gas–solid reaction condition via utilizing solar energy.
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高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Yuxin Mei,Nicui Yuan,Yating Xie,Yaping Li,Baining Lin,Yonghua Zhou
NH 2 -UiO-66 is recently regarded as a potential photocatalyst for CO 2 reduction reaction due to the high CO 2 adsorption capacity, high UV–vis light absorption capacity and chemical stability. Aiming to further improve its activity, in this paper, a composite of NH 2 -UiO-66 and CeCO 3 OH (NU/CC) was fabricated via an in-situ growth method of NH 2 -UiO-66 on CeCO 3 OH. The X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and electron spin resonance (ESR) characterizations indicated that a direct Z-scheme heterojunction between CeCO 3 OH and NH 2 -UiO-66 was formed via the formation of O-Zr-CO 3 2- bond. The CO 2 adsorption measurement, UV–vis DRS spectra and photo(electro)chemical measurements indicated that the optimal composite NU/CC-1.6–90 exhibited the higher CO 2 adsorption capacity, stronger respond and wider absorption range to UV–vis light, as well as the significantly delayed recombination of photogenerated electron-hole pairs, compared with other control samples. As a result, NU/CC-1.6–90 delivered the obviously enhanced photocatalytic activity of CO 2 to both CO and CH 4 , and the rate of electron consumption reached 152.8 μmol/g h, 5-fold of that of NH 2 -UiO-66.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2022
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IF 9.136
Shi-Wen Lv,Xiaoran Wang,Xing Wei,Yi Zhang,Yanqing Cong,Lin Che
Nowadays photocatalysis assisted advanced oxidation processes exhibited a great application prospects in pollution control. Herein, for the first time, a series of transition metal modified UiO-66-NH 2 (namely Fe-UiO-66-NH 2 , Co-UiO-66-NH 2 and Ni-UiO-66-NH 2 ) were synthesized via a simple method. After that, these functional materials were employed as photocatalyst to activate PMS for degrading BPA under visible light irradiation. Significantly, prepared Fe-UiO-66-NH 2 exhibited the highest photocatalytic activity among these samples. More importantly, proposed Fe-UiO-66-NH 2 /PMS/light oxidation system showed excellent degradation ability for various organic pollutants, including BPA, TC, OFX, IBP as well as SMX. Owing to the occurrence of d-d transitions after the coordination of transition metal ions, UiO-66-NH 2 displayed the enhanced utilization efficiency of visible light. Furthermore, introduced Fe ion as a mediator could boost the charge transfer by the cluster-to-metal way, thereby effectively inhibiting the recombination of photogenerated electrons and holes. In addition, embedding cluster-to-metal charge transfer in UiO-66-NH 2 modified the band structure, and both SO 4 −• and OH were major active species in the photocatalytic reaction system. Developed Fe-UiO-66-NH 2 /PMS/light oxidation system with good stability also presented great antibacterial performance. To sum up, current work could provide some novel inspirations for designing the high-efficiency photocatalyst.
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高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
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2022
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IF 5.876
Hao Wang,Shuai Wang,Shixing Wang,Libo Zhang,Yang Zhou,Fan Yang
In the past decades, due to the worst effect of hexavalent chromium on human and environmental health, people have been committed to removing hexavalent chromium from industrial wastewater. In recent years, metal organic frameworks (MOFs) adsorbents have attracted more and more attention in the removal of pollutants from water. Here, an efficient and selective adsorbent(UiO-66-PRAA) was prepared by modified UiO-66-NH 2 with phenothiazine-N-rhodanine to remove Cr(VI) ion from wastewater. The maximum absorption capacity of UiO-66-PRAA at 303 K and pH = 2 was 333.67 mg/g for Cr(VI). Which is higher than that of bare UiO-66-NH 2 . Elovich kinetic and Sips isotherm models are more suitable for describing the adsorption process of Cr(VI) on UiO-66-PRAA, which indicates that the process is a chemically controlled multilayer adsorption. In addition, the removal mechanisms include chelation, ion exchange and reduction. The adsorbent still shows good adsorption performance under the coexistence of different ions. The excellent cycle performance of UiO-66-PRAA confirms its high potential in removing Cr(VI) from polluted water. In general, UiO-66-PRAA has been shown well adsorption properties and reusability, and our finding might provide a new idea for developing efficient and reusable adsorbent to remove Cr(VI) from wastewater.
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高影响因子
Analytical Methods
·
2022
·Vol. 14
·期 24
·2423-2430
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IF 3.532
Juan Du,Kai Liu,Jialei Liu,Dianbo Zhao,Yanhong Bai
Listeria monocytogenes (L. monocytogenes) is one of the most lethal pathogenic bacteria. Although the traditional microbial culture method has high sensitivity and selectivity for the diagnosis of L. monocytogenes, it is time-consuming and not suitable for on-site detection. A rapid, convenient and visualized on-site detection method is particularly needed. In this work, Fe3O4@UiO-66-NH2 was prepared for both magnetic separation and lateral flow immunoassay (LFIA) for the detection of L. monocytogenes by taking advantage of the easy separation of the magnetic core Fe3O4 and the high surface area of the outer layer UiO-66-NH2. Fe3O4@UiO-66-NH2 with a high surface area and good water-dispersibility and optical properties was synthesized by a simple hydrothermal process. It could directly adsorb on the surface of target bacteria and form Fe3O4@UiO-66-NH2-bacteria conjugates, without the labeling of an antibody. After magnetic separation and concentration, the Fe3O4@UiO-66-NH2-bacteria conjugates were detected by the antibody on the test line of the LFIA strip, resulting in a visible orange band. The capture efficiency and LFIA detection of Fe3O4@UiO-66-NH2 were optimized in this study. Under the optimal conditions, a good linear correlation between the test line intensity and the concentration of L. monocytogenes was obtained in the range of 105–108 CFU mL−1, and the limit of detection was 2.2 × 106 CFU mL−1 by the naked eye. The Fe3O4@UiO-66-NH2-based LFIA strip showed strong specificity for L. monocytogenes, and the detection took 45 min without culture enrichment. Therefore, the proposed Fe3O4@UiO-66-NH2-based strip showed the advantages of simple synthesis, being label-free, low cost, good selectivity and convenience.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Huilin Li,Jingying Yang,Xiaochun Hu,Ran Han,Shuo Wang,Mingfei Pan
Amantadine (AMD) is an antiviral drug used to treat animal-based infectious diseases such as avian influenza. However, its illegal use in animal-derived food industries endangers human health. Therefore, an efficient, portable, and visual sensor to detect AMD in food is crucial for ensuring food safety. A multifunctional nanocomposite NH 2 -UiO-66@PtNPs was exploited to design a smartphone-assisted fluorescence-colorimetric immunosensing microarray for multidimensional detection of AMD in animal-derived foods. Platinum nanoparticles (NPs) were immobilized on a Zr-based metal–organic framework (NH 2 -UiO-66). Pt NPs exhibited peroxidase-like activity, whereas NH 2 -UiO-66 stabilized Pt NPs and improved the colorimetric signal of the sensor. Moreover, the fluorescence ligand NH 2 -BDC in NH 2 -UiO-66 was released via alkaline hydrolysis, amplifying the fluorescence signal and improving detection sensitivity. The smartphone-assisted color recognition system accurately identified the color changes of the microarray. The immunocompetitive reaction of AMD and the antibody (Ab) in the microarray NH 2 -UiO-66@PtNPs@Ab 2 allowed the quantitative and visual detection of AMD in a wide concentration range (0.1–1000 ng/mL) with high sensitivity [limit of detection = 0.0022 ng/mL (fluorescence), 0.069 ng/mL (colorimetric), and 0.68 ng/mL (smartphone)]. This detection strategy was verified in AMD-spiked food samples with satisfactory recoveries (82.0–103.0%) and stability (RSD: ≤7.1%, n = 3), showing its great potential for visual screening and portable detection of other food contaminants.
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高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
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2023
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IF 3.8
Xiaoxia Ye,Rixin Huang,Zhihong Zheng,Juan Liu,Jie Chen,Yuancai Lv
Membrane separation strategies offer promising platform for the emulsion separation. However, the low mechanical strength of membrane separation layers and the trade-off between separation flux and efficiency present significant challenges. In this study, we report a CFM@UiO-66-NH 2 membrane with high separation flux, efficiency and stability, through utilizing a robust anti-abrasion collagen fiber membrane (CFM) as the multifunctional support and UiO-66-NH 2 by an in-situ growth as the separation layer. The high mechanical strength of the CFM compensated for the weakness of the separation layer, while the charge-breaking effect of UiO-66-NH 2 , along with the size sieving of its constituent separating layers and the capillary effect of the collagen fibers, contributed to the potential for efficient separation. Additionally, the CFM@UiO-66-NH 2 membrane exhibited superhydrophilic properties, making it suitable for separating oil-in-water microemulsions and nanoemulsions stabilized by anionic surfactants. The membrane demonstrated remarkable separation efficiencies of up to 99.960% and a separation flux of 370.05 L m –2 h –1 . Moreover, it exhibits stability, durability, and abrasion resistance, maintaining excellent separation performance even when exposed to strong acids and alkalis without any damage to its structure and performance. After six cycles of reuse, it achieved a separation flux of 417.97 L m –2 h –1 and a separation efficiency of 99.747%. Furthermore, after undergoing 500 cycles of strong abrasion, the separation flux remained at 124.39 L m –2 h –1 , with a separation efficiency of 99.992%. These properties make it suitable for the long-term use in harsh operating environments. We attribute these properties to the electrostatic effect resulting from the amino group on UiO-66-NH 2 and its in-situ growth on the CFM, which forms a size-screening separation layer. Our work highlights the potential of the CFM@UiO-66-NH 2 membrane as an environmentally friendly size-screening material for the efficient emulsion wastewater separation.
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高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2023
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IF 6.1
Jiayi Chen,Zehao Yang,Jianpeng Zhang,Xing Shen,Zhenlin Xu,Xiangmei Li,Hongtao Lei
Herein, the UiO-66-NH2@quantum dot (NU66@QD) was synthesized with excellent fluorescence intensity and biocompatibility, which was used to develop a multiple immunochromatographic assay (ICA) for the detection of aflatoxin B1 (AFB1), fumonisin B1 (FB1), deoxynivalenol (DON), T-2 toxins (T-2), and zearalenone (ZEN) in cereals and feed. Five monoclonal antibodies and NU66@QD were efficiently labeled by a one-step mixed method to form a multiple detection probe. The limits of detection of the proposed NU66@QD-ICA for AFB1/FB1/DON/T-2/ZEN were 0.04/0.28/0.25/0.09/0.08 μg/kg. The recoveries ranged from 82.83–117.44%, with the coefficient of variation from 2.88–11.80%. A parallel analysis in 35 naturally contaminated cereal and feed samples was confirmed by LC-MS/MS, and the results showed a good correlation (R2 > 0.9), indicating the practical reliability of the multiple NU66@QD-ICA. Overall, the introduction of the novel nanomaterial NU66@QD provides a highly sensitive and efficient multiplex detection strategy for the development of ICA.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 45
·期 20
·9264-9273
·
IF 3.591
Chaowei Wang,Zhe Liu,Guangfa Hu,Ruimin Gao,Jianshe Zhao
In this study, the novel magnetic core–shell composites Fe3O4@UiO-66-HPA, consisting of magnetic Fe3O4@UiO-66 and vanadium-substituted Keggin-type heteropolyacid active species supported by Zr-MOF, were successfully prepared via a one-pot method and fully investigated using FT-IR, XRD, SEM, TEM, TEM-EDX, ICP, VSM and N2 adsorption–desorption isotherms. The synthetic composites were employed as catalysts in an ODS system of simulated fuel under oxygen. The catalyst Fe3O4@UiO-66-PW9V3 exhibits the supreme catalytic performance in this work, with sulfur removal of 99.85% and a TOF value of 31.16 h−1 under optimal reaction conditions (0.2 g catalyst mass, 60 °C reaction temperature, 500 rpm stirring speed, 1 L min−1 oxidant quantity and 180 min reaction time), and can also be recycled ten times without apparent loss of catalytic performance. Furthermore, the kinetic study shows that the ODS process accords with the pseudo-first-order model.
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CHEMICAL ENGINEERING JOURNAL
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2020
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IF 10.652
Dechao Wang,Yangyang Xin,Xiaoqian Li,Feng Wang,Yudeng Wang,Weirui Zhang,Yaping Zheng,Dongdong Yao,Zhiyuan Yang,Xingfeng Lei
Porous liquids (PLs), an emerging class of liquid materials with permanent porosity and good fluidity, have shown great potential in gas capture and separation. However, directly turning metal–organic frameworks (MOFs) into type 1 PLs via post-synthetic modification (PSM) strategy with corona-canopy species has not been reported till now. Moreover, challenges including reducing the cost and simplifying the synthesis process are daunting. In present study, we propose a universal approach to turn UiO-66 into PLs via post-synthetic modification strategy with core-corona-canopy structure using organosilane (OS) corona and oligomer canopy species. The ionically-tethered canopy species endow UiO-66 with good liquid-like behaviors at room temperature. CO 2 and N 2 adsorption–desorption behaviors revealed that PLs possessed great potential in CO 2 selective adsorption separation. Meanwhile, the enhanced CO 2 selective capture sites were determined. As a proof-of-concept, the as-prepared UiO-66-liquid-M2070 PL was incorporated into Pebax-1657 polymer matrix to prepare mixed matrix membranes (MMMs). The excellent dispersion ability, porous structures, and corona-canopy species contributed to the enhanced CO 2 selective permeation. Therefore, the CO 2 permeability and CO 2 /N 2 selectivity of MMM P-UiO-66-liquid-50 increased by 396.5% and 81.3%, respectively, compared with that of pure Pebax membrane, showing attracting prospect in membrane separation. Moreover, the generality of this PSM strategy was confirmed using other different types of canopy species. Remarkably, this PSM strategy could be applied to synthesize other types of advanced porous materials (APMs)-based (e.g., covalent organic frameworks (COFs)) PLs by utilizing the rich library of oligomer species, thus undoubtedly advancing the applications of porous liquids in gas storage and separation.
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DESALINATION
·
2020
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IF 7.098
Haojie Zeng,Zongxue Yu,Liangyan Shao,Xiuhui Li,Meng Zhu,Yuchuan Liu,Xiaofang Feng,Ximei Zhu
A novel photocatalytic membrane was prepared by using graphene oxide (GO), UiO-66-NH 2 and Ag 2 CO 3 as basic materials on the surface of PVDF membrane by vacuum filtration self-assembly. The prepared Ag 2 CO 3 @UiO-66-NH 2 /GO (AgCO@UiO/GO) membrane was characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and atomic force microscopy (AFM). The AgCO@UiO/GO membrane possessed the photocatalytic effects, which significantly enhanced the separation effect of dyes and Cr(VI) wastewater. In particular, the AgCO@UiO/GO membrane can achieve complete removal of MB , RB ,MR and Cr(VI) under light conditions maintaining the fluxes during filtration process reach about 50 L · m −2 · h −1 . In addition, after long-time experiments, the AgCO@UiO/GO membrane retained a higher removal rate and maintained a high flux under light conditions than without light for all dyes and Cr(VI). The unique structure of AgCO@UiO/GO membrane with a large number of screening structures and photocatalytic activity resulting a better removal rate for pollutants and reducing membrane fouling . Furthermore, the AgCO@UiO/GO membrane shows a great potential in improving membrane removal performance and a solution to balance trade-off effect.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Ying Zhang,Jie Xiong,Chao Chen,Qizheng Li,Jingjing Liu,Zhicheng Zhang
The novel humidity sensor , fabricated from inorganic electrolyte doped porous metal-organic framework composite (denoted as LiCl@UiO-66-NH 2 ), is reported in the present work. The humidity sensing properties of LiCl@UiO-66-NH 2 composites have been investigated. The much higher comprehensive sensing properties of composites are obtained in LiCl@UiO-66-NH 2 with 12.5 wt% LiCl. It shows the excellent linearity (R 2 = 0.994) in a broad relative humidity (RH) range. The impedance modulus of LiCl@UiO-66-NH 2 (12.5 wt%) decreases nearly four orders of magnitude from 33% RH to 95% RH at 100 Hz. Besides, the LiCl@UiO-66-NH 2 (12.5 wt%) humidity sensor exhibits fast response (6s) and recovery (18s) speed and excellent long-term stability. The sensing mechanism was discussed through the investigation of complex impedance curves. These results suggest that LiCl@UiO-66-NH 2 have the potential application in humidity sensing. Our work offers a promising strategy for the fabrication of high performance humidity sensors.
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高影响因子
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