JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
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2022
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IF 6.76
Yachun Ren,Yueyang Xu,Erjian Huang,Peng Zhang,Yongping Zeng
Adsorption desulfurization is a very effective method to remove thiophenic compounds from fuels. The metal–organic frameworks (MOFs) have emerged as a new type of desulfurization adsorbents because of their porous nature and large specific surface area. In this study, Cu 2+ was covalently introduced into the UiO-66 framework at the defective sites by the solvothermal method. Further, the π-complexation adsorbent UiO-66-Cu(I) containing Cu + for adsorption desulfurization was synthesized by the methanol vapor-induced reduction. The adsorption performance was tested for the removal of thiophene from the model fuels with different sulfur concentrations. In comparison with the pristine UiO-66, the adsorbent UiO-66-Cu(I) has a higher adsorption capacity for thiophene, reaching 14.8 mg S/g. The competitive adsorption results indicated that UiO-66-Cu(I) has good selectivity for thiophene in the presence of aromatic compounds. From the recycling experiments, this adsorption still has the 86 % of the initial capacity after four cycles, indicating that the adsorbent has a good recycling performance.
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Nano Energy
·
2023
·
IF 17.6
Penghao Zhu,Zaka Ullah,Surong Zheng,Zairui Yang,Shiwei Yu,Shoupu Zhu,Liwei Liu,Aihua He,Cunguo Wang,Qi Li
Metals are the basic and key components of most of the stuff present all around us in our living environment. The corrosion of these metals is a natural phenomenon which can be avoided through application of electrochemical cathodic protection . The triboelectric nanogenerator (TENG) is used to convert the environmental energy into electric energy. Unfortunately, the current output of TENG is always lower which limits its applications in protection of metal corrosion. In this work, we report the fabrication of efficient TENG based on UIO-66, UIO-66-NO 2 and UIO-66-NH 2 , and use it as a power supply to construct a self-powered anticorrosion system for cathodic protection on carbon steel . The introduction of nitrate (-NO 2 ) and amine (-NH 2 ) groups change the Fermi level of the material, allowing the TENG to transfer more electrons during the contact. It is observed that the performance of TENG based on UIO materials is fruitful, with a maximum short-circuit current as 50.0 μA and a maximum power as 122.5 μW·cm −2 . In addition, dipping experiments and electrochemical measurements showed that the TENG is capable to offer notable cathodic protection to carbon steel. The demonstrated work introduces an efficient and cost-effective strategy for scavenging the mechanical energy from environment by employing the self-powered setup to effectually protect the metals from corrosion. The assembly of auspicious self-powered cathodic protection setup based on TENG offers a great potential for versatile applications in protection of metallic corrosion activities.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2022
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IF 4.598
Qingyuan Song,Xueling Shan,Liyin Bu,Anna Dai,Ding Jiang,Wenchang Wang,Hiroshi Shiigi,Zhidong Chen
A highly efficient electrochemiluminescence resonance energy transfer (ECL-RET) aptasensor was constructed for ultrasensitive detection of diethylstilbestrol (DES). The composite composed of silver orthophosphate and zirconium-based metal–organic frameworks (Ag 3 PO 4 -UiO-66) was prepared as a sensing platform for aptasensor incubation. Ag 3 PO 4 , a novel ECL donor, whose emission could be obviously enhanced through loading on UiO-66. Particularly, the composite of Ag 3 PO 4 -UiO-66 could minimize the aggregation of Ag 3 PO 4 , which provided a novel possibility for the construction of high ECL efficiency sensors. UiO-66 presented ultrahigh surface area to improve the loading capacity of Ag 3 PO 4 and DES-specific aptamer. Notably, Ag 3 PO 4 with superb catalytic properties could immobilize DES aptamer via Ag–NH 2 bond and further ensured the distance between the ECL donor and the energy receptor. To design a novel ECL-RET system, GO nanosheets were synthesized as a suitable ECL acceptor which could be fixed through electrostatic adsorption. Owing to the superior spectral overlap, GO could significantly quench the ECL emission of Ag 3 PO 4 . Under the optimal conditions, the constructed ECL-RET aptasensor showed a satisfactory response to DES in a linear range of 1.0 × 10 −14 ∼ 1.0 × 10 −8 M and the detection limit was 7.2 × 10 −15 M (S/N = 3). This paper not only developed a novel approach for environmental water quality monitoring but also offered more opportunities for building highly sensitive ECL-RET aptasensors.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2022
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IF 9.136
Zhimin Guo,Nan Li,Shixiang Zuo,Chenghong Qiang,Wei Zhan,Zhengping Li,Jiangquan Ma
Piezoelectric materials, which could collect and convert mechanical energy into electrical energy, have recently emerged as promising catalysts for pollutants removal sustainably. Unfortunately, it remains a challenge to enhance the intrinsic piezoelectric property of piezoelectric materials. Herein, for the first time, the polar molecule adenine was introduced as a linking agent in the synthesis process of Zr-based UiO-66 (denoted as AD-U) to enhance the structure asymmetry and piezoelectric properties of UiO-66. The piezoresponse force microscopy (PFM) and ferroelectric hysteresis loop demonstrated that AD-U catalyst exhibited significantly enhanced piezoelectric potential than UiO-66. Furthermore, a series of electrochemical characterization evidenced that AD-U displayed higher charge separation efficiency than UiO-66. As expect, the optimized AD-U shown promoted diclofenac sodium (DCF) piezoelectric degradation efficiency by harvesting stirring energy compared with pure UiO-66. The electron paramagnetic resonance (EPR) spectra and trapping agent experiments convinced that h + play the major role for destroying the DCF molecules. Moreover, three possible degradation pathways of DCF were put forward by DFT and liquid chromatography mass system (LC-MS). Our work offers a new pathway to enhance piezoelectric property of MOFs and extend the application of MOFs in the field of piezocatalysis.
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NEW JOURNAL OF CHEMISTRY
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2022
·Vol. 46
·期 6
·2653-2661
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IF 3.925
Long Jin,Feng Liu,Jian-hua Wu,San-Jian Ma,Juan-Hong Li,Yong-Jing Tian,Xin Liu,Zi-Xia Lin
A novel improved Fenton system named MHACF-UiO-66(Zr) was constructed under normal temperature and pressure based on the reduction of FeIII accelerated by hydrogen. The regeneration of FeII was enhanced by Pd/UiO-66(Zr). The hydroxyl radical could be continuously generated using only trace level FeII. 10 mg L−1 4-chlorophenol could be thoroughly degraded in the initial conditions of 75 mL min−1 H2, pH 3, 20 mM H2O2, 2 g L−1 Pd/UiO-66(Zr) and 20 μM FeII. Moreover, the removal efficiency of 15 mg L−1 sulfamethazine could be maintained at least more than 94% under the same conditions. The activity of the solid catalyst could be maintained after 6 consecutive reaction cycles. This provides new insight for improving the inherent shortcomings of the Fenton reaction, which generates large amounts of iron sludge.
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ENVIRONMENTAL TECHNOLOGY
·
2022
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IF 3.475
Tong Li,Caixia Cheng,Kaifeng Zhang,Jie Yang,Guangshuo Han,Xiuju Wang,Zhongpeng Wang,Liguo Wang
In this paper, the hydrophilic UiO-66-NH2 nanomaterial was synthesized by the solvent-thermal method and characterized. Then, UiO-66-NH2 was introduced into the casting membrane solution of cellulose acetate (CA) forward osmosis (FO) membrane, and CA/UiO-66-NH2 forward osmosis membrane was prepared by the phase inversion method. The optimum preparation conditions of CA/UiO-66-NH2 mixed matrix membranes were determined as follows: the content of UiO-66-NH2 was 0.4 wt%, the coagulation bath temperature was 35°C, the mixing temperature was 50°C and the heat treatment temperature was 50°C. FTIR, SEM, water contact angle and AFM were carried out on CA/UiO-66-NH2 forward osmosis membrane prepared under the best preparation conditions. Compared to the CA forward osmosis membrane, the permeability and selectivity of the CA/UiO-66-NH2 membrane were improved. The water flux and reverse salt flux of the CA/UiO-66-NH2 forward osmosis membrane reached 52.32 L/(m2·h) and 2.43 g/(m2·h), respectively. The permeability selectivity of CA membranes and CA/UiO-66-NH2 membranes did not change much during 180 min, indicating that the two membranes had good long-term stability. This study shows a potential advantage of UiO-66-NH2 as additives for improvement in the desalination performance of forward osmosis membranes.
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PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2022
·Vol. 139
·期 33
·e52810
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IF 3.057
Zhirong Hu,Jiayu Miu,Xiong-Fei Zhang,Mingmin Jia,Jianfeng Yao
UiO-66-NH 2 (Zr-based metal organic framework) is integrated into cellulose acetate (CA) to fabricate mixed matrix membranes (MMMs) through solvent-casting approach. To regulate the interfacial compatibility and suppress the non-selective voids, UiO-66-NH 2 with different particle sizes are investigated. The introduction of UiO-66-NH 2 provides additional pathways for gas molecules and renders the membrane with high CO 2 affinity, substantially augmenting the separation efficiency of UiO-66-NH 2 @CA composite membrane. By optimizing the particle size of UiO-66-NH 2 , the non-selective voids and the particle agglomeration can be effectively restricted. The optimum separation performance is obtained by U-100@CA membrane (UiO-66-NH 2 : 200 nm in size), exhibiting a CO 2 permeability of 168.8 Barrer with CO 2 /N 2 and CO 2 /CH 4 ideal selectivities of 40.2 and 51.3, respectively. The separation mechanism is ascribed to the presence of sufficient amine groups, the high CO 2 solubility of CA matrix, and superior inorganic–organic interfacial property.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2021
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IF 4.539
Rui Duan,Hongjuan Wu,Jiahe Li,Zhaoxi Zhou,Weihua Meng,Lei Liu,Hongqiang Qu,Jianzhong Xu
Phosphor nitrile functionalized UiO-66-NH 2 /graphene (G-U-H) was prepared combined a green mechanochemical method and microwave-assisted rapid method to improve the fire safety of epoxy resin (EP). The scanning electronic microscopy, transmission electron microscope and X-ray diffraction results indicated that the G-U-H exhibited sandwich-like hybrid structure. And the -OH from graphene nanoplatelets and -NH 2 from UiO-66-NH 2 were grafted with hexachlorocyclotriphosphazene to form covalent bonds . The obtained flame retardant was added to the EP at a different content. The flame retardancy index and cure index of EP composites were calculated, and those of EP-3 were both good. The cone calorimetry test showed that the flame retardancy of EP was improved and the flame retardant mechanism is the combination of condensed phase and gas phase with the synergistic of P, N and other elements. The physical barrier of graphene nanoplatelets and the generated more stable and denser residual char in condensed phase can effectively cut off the heat and mass transmission. In gas phase, the non-flammable gases were generated to help reduce the heat released.
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Journal of the Taiwan Institute of Chemical Engineers
·
2021
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IF 5.876
Liu Yang,Yu-Long Liu,Xian-Xian Ji,Cheng-Guo Liu,Ying Fu,Fei Ye
Background A novel luminescent sensor with dual-emitting platforms, Tb@UiO-66 , was used for highly detecting Sm 3+ and teflubenzuron. Methods Tb@UiO-66 was synthesized on basis of the exchange of guest molecules, where Tb 3+ ions were encapsulated into the cages of UiO-66 . Significant finds The results of multiband fluorescence originated from the linker-to-cluster charge transfer and the characteristic emission of Tb III . Tb@UiO-66 displayed luminescence enhancements or quenches according to small molecules. Especially for Sm 3+ and teflubenzuron, the characteristic peaks of Tb@UiO-66 at 490, 545, 585, and 621 nm increased with the increasing of the concentration of the analytes, where Tb@UiO-66 exhibited the effect of luminescence enhancement. The detection limits for detecting Sm 3+ and teflubenzuron were 0.09 μM and 0.21 μM, and the changes of luminescence intensities could be observed by naked eyes under the UV light at 365 nm. Tb@UiO-66 could also be used to detect teflubenzuron in real water samples. Tb@UiO-66 could be reused for at least 5 cycles for the detection of Sm 3+ and teflubenzuron with the framework of Tb@UiO-66 uncollapsed. These results implied that the integration of Ln III luminescent materials and Zr-MOFs by doping method provided a new strategy for fabricating novel luminescent sensors for detecting polluting small molecules.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2021
·
IF 4.539
Yawen Tan,Yi Zhou,Yuehong Deng,Haiqin Tang,Hao Zou,Yifeng Xu,Jiaxin Li
The introduction of metal-organic frameworks into semiconductor photocatalysts is one of the strategies to improve the separation efficiency of electron-hole pairs. In this study, UiO-66-NH 2 /Bi 2 WO 6 nano-heterojunction was constructed for the first time by introducing UiO-66-NH 2 into the Bi 2 WO 6 precursor solution. A series of characterizations such as XRD , XPS and FT-IR have indicated that the successful synthesis of the composites and showed that UiO-66-NH 2 and Bi 2 WO 6 are tightly connected and interacted. SEM results showed that the introduction of UiO-66-NH 2 can increase the distance between bismuth tungstate nanosheets and effectively inhibit the agglomeration of Bi 2 WO 6 . The visible light degradation efficiency of 6% UiO-66-NH 2 /Bi 2 WO 6 can reach 99.7%. The improvement of photocatalytic activity could be attributed to the formation of a type II heterojunction in the composite, which effectively promoting the separation of electron and holes.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2021
·
IF 3.764
Xu Zheng,QianLing Ma,Jianming Tan,Bo Yu
Dehumidification performance of a high-efficient compact desiccant cooling component named desiccant-coated heat exchanger (DCHE) highly depends on coated desiccant materials. Currently, mesoporous silica gels and salt-supported silica gels have been extensively studied. Silica gels have limited adsorption quantity in the middle relative pressure range, while salt-supported silica gels have potential threat of corrosion. In this work, a metal–organic framework UiO-66 that can achieve good adsorption quantity without corrosion is reported. The equilibrium adsorption test shows that UiO-66 has promising water uptake, especially in the relative pressure range of 0.35–0.65. The adsorption kinetics test displays that UiO-66 exhibits desirable dynamic water uptakes and adsorption rate constant. Dehumidification capacities of a DCHE using UiO-66 are estimated via a mathematical model and compared with silica gel- (SG) and LiCl-supported silica gel (SG/LiCl). Simulation results show that UiO-66 has better dehumidification performance than both SG- and SG/LiCl-coated samples for semiarid and semihumid climates when outdoor temperature is lower than 36 °C. Especially, when the temperature and relative pressure of inlet air are set as 30 °C and 0.35, respectively, its dehumidification capacity can be 2.7 times the amount of the SG-coated one and 1.3 times of the SG/LiCl-coated one. However, it should be more prudent in choosing UiO-66 under hot and humid climates.
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2021
·Vol. 138
·期 22
·50519
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IF 3.125
Wei Wang,Peng Zhang,Yaping Shi,Zhichao Zhang,Xin Xu,Ping Ding
The composite membrane with the advantages of high separation efficiency and wide application, has been widely concerned in the field of water purification and molecular separation. However, the common composite membrane cannot achieve continuity, or the grafting process is complex, which significantly hinders its further development. In this work, the in-situ polymerization of UiO-66/PVDF supramolecular flat membranes as the continuous and high-performance composite membrane can be easily synthesized using the supramolecular force, (such as, hydrogen bond, etc.). These supramolecular membranes exhibit good hydrophilic (61°) and anti-fouling performance for bovine serum albumin (BSA) solution with rejection rate 97.79% than the original membrane. Moreover, this membrane can achieve more MOF doping based on maintaining the membrane performance, which undoubtedly greatly improves its hydrophilicity and mechanical properties. In addition, we also characterized the porous microstructure of the UiO-66/PVDF supramolecular membrane to analyze the influence of different doping amounts on the membrane structure. This supramolecular membrane has the advantages of simple synthesis, good hydrophilicity and water separation performance, which provides a more convenient and effective way for the preparation of MOFs/polymer flat membrane, and also provides a new method and new idea for expanding the application of MOFs/polymer ultrafiltration membrane in water treatment.
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危险品化学品经营许可证（带存储）