PROGRESS IN NUCLEAR ENERGY
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2025
·
IF 3.2
Bing Han,Zhiwei Zhao,Yijia Xu,Wencheng Yao,Yue Wen,Qi Wang,Zhuo Wang,Yuejie Ai
The efficient extraction of uranium from seawater plays an important role to guarantee a sustainable nuclear energy industry. Zr-based metal-organic frameworks (MOFs) are promising uranium adsorbents due to their high stability, customizable functionality and adjustable topological structure. In this study, Zr based MOF-808 with tunable phytic acid (PA) functionalization (MOF-808-PA1 and MOF-808-PA2) were prepared. The modulation of PA modification significantly promoted the uranium extraction of MOF-808 with the saturated adsorption capacity reaching 423.89 mg/g and adsorption equilibrium achieved in 15 min in aqueous solution. Impressively, MOF-808-PA2 exhibited superior selectivity towards uranium with the distribution coefficient up to 9.2 × 10 5 mL/g, which overwhelms other competitive ions in simulated seawater. After adsorption in real seawater for 28 days, uranium capture capacity of MOF-808-PA2 reached 7.85 mg/g, 8 times higher than that of vanadium. DFT simulation indicated that the excellent seawater uranium extraction performance originated from the strong affinity between abundant P-O/P=O and uranyl ions. This work highlights the design of high-performance uranium adsorbents based on functional group modification in MOFs system.
研究领域:
材料科学
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核化学
·
环境工程
·
吸附分离
·
功能材料
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2019
·
IF 6.393
Liping Du,Wei Chen,Jian Wang,Wen Cai,Shu Kong,Chunsheng Wu
The effective capture and sensitive detection of cancer cells are of great significance to the basic research as well as to the clinical diagnosis and therapy. Here we proposed a simple, low-cost, and high-efficient impedance cytosensor based on folic acid-functionalized zirconium metal-organic frameworks (MOF). Folic acid (FA)-functionalized zirconium MOFs (UiO-66) was utilized as the sensitive element due to the high surface area and porosity, in which FA can be effectively modified onto UiO-66 by the coordinative interaction. The successful preparation of FA@UiO-66 nanocomposite was carefully validated by power X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectra, UV spectra, zeta potential, transmission electron microscope (TEM), and scanning electron microscope (SEM). The obtained electrochemical impedance results indicated that this impedance sensor functionalized with FA@UiO-66 nanocomposite exhibited good analytical performances in a linear range from 1 × 10 2 to 1 × 10 6 cells/mL. The detection limit was calculated to be as low as 90 cells/mL. It also showed good selectivity in distinguishing FAR-rich cancer cells (e.g. HeLa and H1299 cells) and FAR-negative cells (e.g. HEK-293 cells). HeLa cells spiked in blood samples can also be detected with good recovery rates. All the results demonstrated that this simple and universal approach has great potential to develop disposable and portable biosensors and be applied in the early-stage cancer diagnosis.
研究领域:
生物医学工程
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分析化学
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肿瘤学
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DOI
高影响因子
BIOELECTROCHEMISTRY
·
2025
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IF 4.5
Runran Ma,Te Li,Xueying Li,Jianwei Han,Xin Zhang,Tingting Di,Jiabo Wang,Weijun Kong
A ratiometric electrochemical aptasensor was developed for ultra-sensitive detection of cortisol using aptamer (Apt) as recognition element, methylene blue (MB) as signal probe, and zirconium metal–organic framework (Zr-MOF) as carrier loaded with abundant MB for signal amplification. The carboxylated multi-walled carbon nanotubes (cMWCNTs)-modified Au electrode showed excellent electrochemical performance to immobilize complementary DNA (cDNA) for hybridizing with MB@Zr-MOF-Apt via amide bonds. In the presence of cortisol, it would compete with cDNA for binding the Apt, resulting in the detachment of MB@Zr-MOF-Apt complex from the electrode surface, and the electrochemical signal of MB was decreased, while that of [Fe(CN) 6 ] 3−/4− was basically unchanged. The ratio of the electrochemical signals of [Fe(CN) 6 ] 3−/4− to MB was proportional to the cortisol concentration. Due to the greatly enhanced conductivity of the cMWCNTs-decorated Au electrode and the largely improved EC signals of Zr-MOF encapsulated MB probes, this ratiometric electrochemical aptasensor offered high sensitivity with an ultra-low detection limit of 0.0046 nM and a wide linearity of 0.01–1000 nM, as well as satisfactory accuracy with recoveries of 93.79–106.76 % in artificial sweat samples, providing a potential strategy for the detection of more trace hormones in different clinical samples by simply replacing the corresponding aptamers.
研究领域:
分析化学
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生物医学工程
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
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IF 8.3
Yuhan Cui,Lijie Zhao,Danfeng He,Jing Sun,Jinyue Yang,Wanxia Tang,Haixia Yu,Chunhua Lou,Wendi Wang,Xinyou Zhang,Huaping Zhao
At present, it is very necessary to select and prepare suitable positive and negative electrode materials to fabricate high-performance asymmetric supercapacitors. Metal–organic frameworks (MOFs) have garnered significant attention in the energy storage field due to their high conductivity. As a branch, the zirconium organic framework (UIO-66) is a promising porous material due to its large specific surface area and abundant Zr centers. Graphene oxide (GO) and MXene are very suitable as substrate materials for conducting an MOF due to their abundant active sites and adjustable interlayer distance. The GO/MXene@NiZrP prepared through an in situ composite of GO and Mxene with the hydrothermal method and calcining method showed excellent electrochemical performance. Compared with the precursor UIO-66, the specific capacitance of the final product GO/MXene@NiZrP increases more than ten times, mainly because of its special layered porous structure, and GO/MXene@NiZrP has a larger specific surface area, pore volume, and surface defects caused by unstable Zr4+ than those of UIO-66. Using GO/MXene@NiZrP as the positive electrode and biochar (BC) as the negative electrode, an asymmetric supercapacitor, BC//GO/MXene@NiZrP, is assembled. After 10,000 cycles at a current density of 10 A g–1, the capacitance retention remains at 83.3%, showing excellent cycle stability.
研究领域:
材料科学
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能源存储与转换
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
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2019
·Vol. 166
·期 4
·B193
·
IF 3.12
Sheying Dong,Hao Cui,Dandan Zhang,Mengmeng Tong
Several reports reveal that high level of C-reactive protein (CRP) in serum enhances venture of diabetes. In this article, we presented a platform which blended Zr(IV)-organic framework with 2,5-thiophenedicarboxylate ligand (Zr-tdc) and ionic liquid (IL) to form a steady composite membrane on the carbon paste electrode (CPE). The platform was applied to CRP and glucose biosensors which were connected with diabetes and displayed well performances. Firstly, a sensitive immunosensor for label-free and direct detection of CRP was developed at Zr-tdc/IL modified electrode. Under optimal conditions, differential pulse voltammetry (DPV) response showed the low detection limit of CRP was 0.2 ng/mL. Secondly, the glucose biosensor immobilized glucose oxidase (GOX) was constructed and studied by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and amperometric response. The Michaelis–Menten constant (KM) of immobilized GOX was 0.16 mM, and the detection limit was 2.7 μM for glucose. Two novel biosensors displayed well selectivity, stability and lower detection limit. This work improved the performance of electrochemical sensing and expand the utilization of the material by carrying on the effective immobilization of enzyme and antibody.
研究领域:
生物医学工程
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分析化学
✓ 已验证
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2020
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IF 3.594
Chunhua Lin,Caijun Zhong,Yonghai Song,Li Wang
Melamine has biological toxicity and is forbidden to be used in food processing and food additives. The long-term ingestion of melamine will cause renal malfunction and metabolic problems of the urinary system, so it is of great significance for the rapid and selective detection of melamine. Herein, a zirconium-based metal–organic frameworks (Zr-based MOFs) encapsulated tris(2,2-bipyridyl)ruthenium (II) chloride hexahydrate ([Ru(bpy) 3 ] 2+ ) composite, donated as UiO-66-NH 2 @Ru, was reported and further studied its sensing performance for melamine based on ratiometric fluorescent method. The UiO-66-NH 2 @Ru was prepared from ZrCl 4 , 2-amino-terephthalic acid (TPA-NH 2 ) and [Ru(bpy) 3 ] 2+ by one pot reaction through solvothermal method, which exhibited dual emission signals at 445 and 595 nm from single excitation of 350 nm. The corresponding two peaks showed different responses to melamine, that was, the obvious enhancement at 445 nm and the slow decrease at 595 nm, thus achieving the “on–off” ratiometric fluorescence detection. When the concentration of melamine was in the range of 0.27 to 110 μM, the ratio of fluorescence intensity F 445 /F 595 had a good linear relation with the correlation coefficient R 2 = 0.995 and the detection limit of 90 nM. The synthetic UiO-66-NH 2 @Ru probe implemented rapid determination of melamine in real sample of milk powder with high sensitivity and selectivity. Compared with the reported carbon dots, quantum dots, metal nanoclusters, nanocomposites and other fluorescent sensors, MOFs-based sensor have broadened the application of nanomaterials in melamine detection for the first time. This study also demonstrates the Zr-based MOFs as a platform to encapsulate fluorescent dye for constructing ratiometric sensor in the determination of melamine is feasible and exciting.
研究领域:
食品安全检测
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纳米材料科学
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2019
·
IF 6.361
Qun Liu,Shasha Li,Haihuan Yu,Fanming Zeng,Xiao Li,Zhongmin Su
Composites of MOFs and aerogels (MOFACs), as a new class of nanostructured materials , attract increasing attention due to their favorable adsorption properties. Herein, UiO-66-NH 2 -CS aerogel monolith (UNCAM) was synthesized by covalent crosslinking with hierarchical structure, exhibiting effective and stable adsorption of Pb(II) ions. The aerogel monolith containing 50% MOF particles possesses a ultra-low density of 15.8 mg·cm −3 , which is mainly attributed to the highly porous structure. Meantime, UNCAM can be described more suitable by the pseudo-second-order model and shows a higher mass transfer rate. The highest Pb(II) adsorption capacity of aerogel monolith is up to 102.03 mg·g −1 (1.612 × 10 6 mg·m −3 ), which is comparable to literature reports. The adsorption of Pb(II) by UNCAM is an endothermic and spontaneous process and consistent with the Langmuir model, indicating that the adsorption process belongs to monolayer adsorption and chemisorption . Furthermore, the adsorption mechanisms of coordination interaction between N and Pb (II) were confirmed, and the O also played a synergistic role in adsorption on a certain degree. Lastly, The UNCAM retained 90.12% adsorption ability after three cycles. This strategy may provide an effective and versatile pathway to convert the bulk MOF particles into a shapeable form and sequentially branch out their applications in pollutant treatment fields.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
·
2016
·Vol. 91
·期 11
·2785-2792
·
IF 2.738
Cong Cheng,Jianzhang Fang,Shaoyou Lu,Chaoping Cen,Yi Chen,Lu Ren,Weihua Feng,Zhanqiang Fang
BACKGROUND As a super stable zirconium based metal-organic framework, Zr 6 (OH) 4 (C 8 H 6 O 4 ) 6 (UiO-66) is considered a competitive candidate to conjugate with photocatalyst to enhance photocatalytic activity. In this study, highly dispersed bismuth vanadate (BiVO 4 ) nanoparticles grown in situ upon the surfaces of UiO-66 were synthesized through a simple method, and the photocatalytic activities were investigated by measuring the degradation of rhodamine B (RhB) under visible light irradiation. RESULTS The results show that UiO-66@BiVO 4 composite with Bi:Zr molar ratio of (1:1) was the optimum hybrid and exhibited much higher photocatalytic activities than that of pure BiVO 4 . Furthermore, the photocatalyitc mechanism of RhB degradation by UiO-66@BiVO 4 was also investigated, the photodegradation of RhB was mainly caused by the super oxide ions ( · O 2 − ). The lone pair electrons of surface group –OH and –COOH of UiO-66 attract the photogenerated holes (h + ), which effectively prevent the recombination of electrons and holes. CONCLUSIONS The enhanced separation of photogenerated electron–hole pairs through interfaces between BiVO 4 and UiO-66 led to improvement of the photocatalytic activity. The study showed a degradation mechanism for RhB wasterwater treatment. © 2016 Society of Chemical Industry
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
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2022
·
IF 6.206
Dehong Fan,Xiaobang Liu,Kai Qi,Zhenyu Chen,Yubing Qiu,Bokai Liao,Xingpeng Guo
A smart-sensing coating is developed by adding a dual-emission fluorescent zirconium metal-organic framework/rhodamine B composite (Zr-MOF@RhB) into the commercial epoxy resin coating, which can autonomously detect and distinguish the damage of surface coating and the corrosion of substrate aluminum . The orange-yellow fluorescence can be observed to identify the area of mild coating damage without metal corrosion, resulting from the cumulative release of Zr-MOF@RhB with the emission wavelength of 583 nm. In case of the occurrence of aluminum corrosion, the fluorescence color turns from orange-yellow to green, in which the emission behavior of Zr-MOF@RhB at 490 nm is greatly enhanced with the presence of Al 3+ ions. The smart-sensing ability can availably and robustly operate in the conditions of long term, wide ranges of pH and temperature, and diverse interfering substances. This simple and powerful warning system relying on fluorescent MOFs would not only extend the practical applications of MOFs but also be a promising candidate for smart coating strategies.
研究领域:
材料科学
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腐蚀与防护
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Yuhang Liu,Yuanjiang Zhao,Zhuxian Zhou,Youqing Shen,Liming Jiang
In this work the sorption properties of three isoreticular Zr-based MOFs , viz., UiO-66, UiO-67, and UiO-68 as adsorbents of active organics were examined and especially the pore size effects are discussed using d -limonene, myrcene, α-terpinene, and α-pinene as probe molecules. Results indicated that the terpene uptake and release are highly dependent on both the MOF pore size and the geometric feature of guest molecules themselves. The shape selective property of UiO-66 holds for the tested terpenes, where the adsorption capacity of d -limonene, myrcene, and α-terpinene in equilibrium with the liquid phase (0.43–0.46 g g −1 ) was approximately 5-times larger than that of α-pinene with 0.56 nm kinetic diameter (0.09 g g −1 ). The narrow triangular apertures of UiO-66 act as the permeation-limiting barrier for guest molecules with the dimension close to the pore size. Except for α-pinene, the loading fraction for other terpenes decreased with an increase in the MOF pore diameter. For example, the uptake of UiO-66, UiO-67, and UiO-68 for myrcene reached up to 90 %, 81 %, and 76 % of their theoretical maximum loading, respectively. Differential scanning calorimetry revealed that the melting point of both d -limonene and α-terpinene confined in the 0.71 nm pores of UiO-67 shifts to a higher temperature relative to that in the bulk phase. In contrast, no obvious phase transition was observed for the terpene composites with either UiO-66 or UiO-68 (0.94 nm pore size) under identical conditions. Consistent with the thermal analysis results, the monoterpenes entrapped in the UiO-67 showed a much lower release rate than their counterparts in the other two frameworks.
研究领域:
材料科学
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食品科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Pan Ma,Meili Ding,Wei Rong,Xi Liu,Jianfeng Yao
The synergistic catalysis involving multiple active sites provides a promising method for improved catalytic activity . In this work, we developed a gentle acetic acid-assisted polyhydroxy acid modification strategy to regulate the coordination environment of a zirconium-based MOF , UiO-66. D -gluconic acid with multiple hydroxyl groups is selected to replace the acetic acid coordinated at the metal nodes of UiO-66 via competitive coordination, allowing for the coexistence of hydrogen bonding donors and Lewis acid sites. The effect of acetic acid and D -gluconic acid separately as modulator and modifier agent to produce linker defects on catalytic properties of UiO-66 was investigated in the cycloaddition of carbon dioxide (CO 2 ) with epichlorohydrin. It was demonstrated that the activity of UiO-66 can be tuned by the amount of D -gluconic acid. Remarkably, the resultant UiO-66-GA-1200, which is modified with 1200 μL of D -gluconic acid, achieves a high catalytic yield for CO 2 cycloaddition of epichlorohydrin under 1 bar CO 2 and 60 °C. In contrast of pure UiO-66, UiO-66-GA-1200 shows admirable catalytic activities (92–94% yield) even after exposure to humid environment or in simulated flue gas . This work provides a novel method for constructing MOF-based solid acid catalysts and casts a new light on the development of practical CO 2 utilization.
研究领域:
材料科学
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催化化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2016
·
IF 4.035
Lijie Liu,Lian Xia,Chuanxiang Wu,Fengli Qu,Guoliang Li,Zhiwei Sun,Jinmao You
A stable zirconium (Ⅳ)-based metal organic frameworks (UIO-67) material possessing good chemical, thermal and water stability was synthesized and applied as a sorbent for the dispersive solid phase extraction (DSPE) of 8 plant growth regulators (PGRs) in fruit samples. Fluorescence labeling combined with high performance liquid chromatography fluorescence detection (HPLC-FLD), was used to quantify the target analytes. Characterization of the UIO-67 material was performed by X-ray diffraction(XRD) and scanning electron microscopy (SEM). The experimental parameters, such as amount of UIO-67, type and volume of eluting solvent, adsorption and desorption time, were optimized. Under the optimized conditions, good linearity was observed in the range of 10–1000 pmol/mL with R 2 >0.9989. The limits of detection and limits of quantification were in the range of 0.21–0.57 ng/mL and 0.81–1.91 ng/mL, respectively. The intra-day and inter-day precisions (based on the relative standard deviation, n =3) of the PGR derivatives were under 3.1% and 5.3% respectively and the accuracies of the method for the PGRs were in the range from 89.3% to 102.3%. The developed method was successfully applied to analyze PGRs residues in fruit samples. The proposed method is proved to be simple, environment-friendly and inexpensive and it is feasible to directly use UIO-67 as sorbent to extract targets by varying conditions.
研究领域:
分析化学
·
食品科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）