NEW JOURNAL OF CHEMISTRY
·
2017
·Vol. 41
·期 18
·9857-9865
·
IF 3.269
Saisai Cheng,Ningzhao Shang,Xin Zhou,Cheng Feng,Shutao Gao,Chun Wang,Zhi Wang
Bimetallic AgPd nanoparticles anchored on metal–organic framework (UiO-66) derived N-doped porous carbon (NPC-UiO-66) was fabricated and used as a catalyst for the catalytic transfer hydrogenation of nitroarenes using formic acid-formate as the hydrogen source. The results demonstrated that the Ag1Pd9@NPC-UiO-66 composite exhibited extraordinary catalytic activity toward the hydrogenation of nitroarenes to anilines at room temperature. A series of substituted nitroarenes were successfully converted to the corresponding anilines in high yields under ambient conditions with other reducible groups remaining intact. The superior catalytic performance of the prepared catalyst can be attributed to the synergistic effect between the highly dispersed AgPd nanoparticles and the unique structure of the NPC-UiO-66 support, as well as the high adsorption ability of the catalyst for the nitroarenes.
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 69
·64895-64901
·
IF 3.289
Fengli Qu,Lian Xia,Chuanxiang Wu,Lijie Liu,Guoliang Li,Jinmao You
A zirconium-based metal–organic frameworks (MOF), with 2-aminoterephthalic acid as linkers, named UiO-66-NH2, has been synthetized and characterized in a dispersive solid-phase extraction (DSPE) procedure in combination with high-performance liquid chromatography (HPLC) with fluorescence detection (FLD) for the pre-concentration and detection of sialic acids (SAs) in serum samples. In this study, UiO-66-NH2 was employed for the first time as a novel DSPE sorbent for sample pretreatment. Parameters which influence the extraction efficiency such as the amount of MOF, nature of the desorption solvent and its amount, adsorption time and desorption time were investigated and optimized. Under the optimized conditions, better extraction results were obtained by UiO-66-NH2 based DSPE for the extraction of SAs from serum samples than traditional sample preparation methods. Detection limits of the method as low as 0.16 pmol for N-glycolylneuraminic acid (Neu5Gc) and 0.11 pmol for N-acetylneuraminic acid (Neu5Ac) were obtained, with determination coefficients (R2) higher than 0.9995 for the range 10–1000 pmol L−1, average recoveries of >91.3% at three different spiked levels (1, 5 and 10 ng mL−1), and relative standard deviation (RSD) values below 3.4%. The proposed method was demonstrated to be sensitive enough for determination of SAs from bio-samples.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Yanwei Sun,Chunshan Song,Xinwen Guo,Yi Liu
Preferred orientation has proven to exert a significant impact on the gas separation performance of metal–organic framework membranes. Nevertheless, realizing three-dimensional orientation control remains a challenging issue. In this study, well-intergrown NH2-UiO-66 membranes with both (111) out-of-plane and regional in-plane orientations were prepared by combining oriented deposition of seeds and solvothermal epitaxial growth. Dynamic air–liquid interface-assisted self-assembly method was employed to organize uniform octahedral-shaped NH2-UiO-66 seeds into closely packed monolayers with (111) out-of-plane and regional in-plane orientations, whereas the use of ZrS2 as the zirconium precursor during the solvothermal epitaxial growth was found indispensible for sealing the intercrystalline gaps while preserving the preferred orientation inherited from seed layers. In addition, compared with solvothermal heating, employing microwave heating led to poor intergrowth between neighboring NH2-UiO-66 crystals because of a lower dielectric loss factor of the reaction medium. Gas permeation results indicated that the prepared NH2-UiO-66 membranes exhibited H2/CO2 selectivity up to 5.5 times higher than their counterparts with random and/or mere out-of-plane orientations as well as H2 permeability 14.5 times higher than NH2-MIL-125(Ti) membranes with mere out-of-plane orientation under similar operating conditions.
✓ 已验证
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Tingting Zhang,Xing Liu,Yanqiu Jiang,Xiaowei Zheng,Jian Zhang,Yudong Li,Defeng Li,Kaifeng Lin
Photo-Fenton reaction has received increasing attention in removing antibiotics in water. Herein, Fe 2 O 3 -on-ZrO 2 polypods were designed and synthesized via metal organic frameworks (MOFs) derivation strategy combined with reflux heating and baking. The experimental results showed that under Ultraviolet–visible (UV–vis) light irradiation, more than 95 % tetracycline hydrochloride (TC-HCl) was degraded by Fe 2 O 3 -on-ZrO 2 with Fe/Zr mole ratio of 1.3 in 25 min within full pH range. Mainly due to the following points, there were abundant Fe 2 O 3 -on-ZrO 2 heterojunctions, which conduced to transfer photo-induced electrons (e − ) from ZrO 2 to Fe 2 O 3 , thus accelerating the iron cycle. Besides, OH – adsorbed was oxidized to hydroxyl radicals (·OH) by holes (h + ) in the valence band (VB) of ZrO 2 , and ZrO 2 also enhanced the stability of the catalyst and reduced the leaching of iron ions. Finally, the reasonable degradation pathway and degradation mechanism were speculated by high performance liquid chromatography-mass spectrometry (HPLC-MS), electron spin resonance technology (ESR), scanning Kelvin probe (SKP), the conduction band (CB) and VB positions of Fe 2 O 3 -on-ZrO 2 , etc. This work exhibited a new structure and degradation mechanism, which would further encourage researchers to study the rational regulation of materials with special morphology and structure.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
·
2020
·Vol. 30
·期 11
·4350-4360
·
IF 1.941
Zhang Zhihua,Peng Xinke,Zhang Zhongping,Xiao Weiming,Deng Shengjun,Mao Xuejin,Hong Sanguo,Chen Chao,Zhang Ning
Metal–organic framework (MOF) supported nanocatalysts are attracting great attentions in heterogeneous catalysis. However, they are still less explored and poorly understood in catalyzing solid–gas reactions. In current work, two MOF supported Pt nanocatalysts were prepared by immersion method coupled with the most commonly used NaBH 4 (Pt/UiO-66-NaBH 4 ) and H 2 (Pt/UiO-66-H 2 ) reduction, and their catalytic CO oxidation performances were investigated. NaBH 4 and H 2 reduction both provide highly dispersed Pt/UiO-66 nanocatalysts, and the two prepared catalysts display excellent CO oxidation activities. Moreover, CO oxidation durability tests reveal that Pt/UiO-66-NaBH 4 shows superior durability and structure stability, which are much better than those of Pt/UiO-66-H 2 . The high structure stability of Pt/UiO-66-NaBH 4 also endows it with good H 2 O and CO 2 tolerance. This work attempts to elucidate the influence of reduction methods on the structures and catalytic CO oxidation performances of Pt/UiO-66 catalysts by employing XRD, TEM, N 2 -sorption, XPS and in situ DRIFTS techniques. Furthermore, the mechanism of CO oxidation was studied by in situ DRIFTS, and the result reveals that the CO oxidation on the two catalysts follows different mechanism.
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2020
·Vol. 187
·期 1
·1-9
·
IF 6.232
Chen Jianxiong,Zhang Birong,Dang Xueping,Zheng Dongyun,Ai Youhong,Chen Huaixia
A polyaniline composite doped with etched multi-walled carbon nanotubes and UiO-66-NH 2 was prepared by electropolymerization. It was used as a sorbent to extract the polycyclic aromatic hydrocarbons (PAHs) phenanthrene, fluoranthene and pyrene. Its surface morphology, crystal structure and capability of adsorbing PAHs were characterized by scanning electron microscopy, X-ray photoelectron spectrometry, Fourier transform infrared spectrometry and zeta potentiometry. The π stacking and anion-π interactions are shown to play dominant roles in the sorption mechanism. Coupled with high performance liquid chromatography, the composite-modified fiber was applied to detect PAHs in lake water samples by direct immersion extraction. The method excels by (a) wide linear range (0.05–20 ng mL −1 ), (b) low limits of detection (10 pg mL −1 ), (c) satisfactory recovery from spiked samples (84.7–113.8%), and (d) good reproducibility (relative standard deviations of <6.5%). The method is superior in terms of costs and reproducibility compared to some pretreatment methods with mass spectrometric detection.
Schematic representation for interaction between PANI-etched MWCNT/UiO-66-NH 2 and polycyclic aromatic hydrocarbons (phenanthrene, fluoranthene, pyrene).
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Xiaoqin Hai,Jiawei Liu,Qin Li,Yongpeng Ma,Ruiyu Fu,Hongbo Li,Yanhui Zhang,Xiaoli Guo,Xin Di
In this work, UiO-66-HCl-based dispersive solid-phase extraction (DSPE) was designed and developed for the enrichment of pyrethroid pesticide residues in water and food matrices before high performance liquid chromatography analysis. For the first time, gamma-valerolactone (GVL), a biodegradable, food-grade green solvent, was used as the eluent in DSPE process, realizing a significant progress in economic and ecological benefit. The stable and highly porous UiO-66-HCl was synthesized as the adsorbent by hydrothermal synthesis and hydrochloric acid etching. The prepared material was characterized by FT-IR, SEM, XRD, TGA and N 2 adsorption–desorption analyses, and the important parameters affecting the extraction efficiency were optimized. Under the optimized conditions, the method has shown satisfactory limit of detection (4 ∼ 5 μg/L) and desirable recoveries (78.3 %∼105.7 %) as well as excellent precision (RSD < 15.7 %). Moreover, the benefits of the proposed method were assessed via various green chemistry tools, and the extraction mechanism was also briefly investigated to understand the appealing adsroption performance. It was demonstrated that the method can be successfully applied for extraction and analysis of pyrethroid pesticide residues in water and food matrices, showing an excellent application potential for green analysis of trace components.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Yao Zhang,Guizhen Li,Xu Wang,Mingrong Lu,Jiaxiong Li,Xiuying Fang,Wenrong Yang,Min Yang,Hongbin Wang
The development of effective methods for identifying and eliminating antibiotics from wastewater is urgently needed, and it continues to pose significant challenges. In this study, a zirconium-based metal–organic framework (UiO-66) was synthesized using a straightforward one-pot method for the dual purpose of detecting and adsorbing tetracycline (TC). Characterization by transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and Brunauer-Emmett-Teller (BET) analysis demonstrated that UiO-66 exhibited abundant surface functional groups and an exceptionally high specific surface area, resulting in a high TC removal efficiency of 85.14 % (initial concentration: 20 mg/L) over a wide pH range. The adsorption data were accurately described by the pseudo-second-order kinetic and Freundlich isotherm models. Notably, the UiO-66 material adsorbed with TC could be well regenerated at least two cycles, showing no significant loss in adsorption efficiency. Furthermore, the adsorbent demonstrated blue emission when excited at 310 nm. As the concentration of TC increased, a corresponding decrease in the fluorescence intensity of UiO-66 was observed. This change exhibited a linear correlation within the concentration range of 0.01 to 30 mg/L, achieving a detection limit as low as 0.003 mg/L. The UiO-66 probe exhibited exceptional specificity for TC and strong anti-interference capability, achieving satisfactory recoveries in the analysis of TC from real samples. These findings are poised to assist researchers in creating comprehensive strategies for the concurrent detection and elimination of antibiotics in the environment.
✓ 已验证
产品关联
DOI
高影响因子
ANALYST
·
2021
·Vol. 146
·期 9
·3052-3061
·
IF 4.616
Jie Min,Xiang-Long Qu,Bing Yan
By means of post-synthetic treatment on the UiO-66 derivative with –SO3H, a novel luminescent hybrid material named Tb3+@UiO-66–SO3H has been prepared simply and efficiently. Given its wonderful luminescence properties like intense green emission, a long lifetime, a robust structure and photostability, it is further developed as a fluorescent probe for the sensing of trans,trans-muconic acid (tt-MA, a biomarker of benzene) and Fe3+, which are closely related to human health. Notably, Tb3+@UiO-66–SO3H shows an outstanding recognition ability for Fe3+ among common cations with a low detection limit (0.11 μM, 0.006 ppm). More importantly, Tb3+@UiO-66–SO3H can realize highly sensitive and selective detection of tt-MA (detection limit, 0.58 μM, 0.083 ppm). Besides, this rapid response probe is facilely prepared, non-toxic and reusable, showing the potential of Tb3+@UiO-66–SO3H in the practical monitoring of tt-MA and Fe3+.
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Feihu Mu,Qiong Cai,Hao Hu,Jian Wang,Yun Wang,Shijian Zhou,Yan Kong
To solve the problem of energy shortage and environmental pollution, the construction of properly designed photocatalysts is a promising method. Here, UiO-66-(COOH) 2 /ZnIn 2 S 4 Z-scheme photocatalyst decorated with MoS 2 nanosheets was designed and constructed as a novel 3D hierarchical structure via hydrothermal methods. In this particular 3D hierarchical structure, the UiO-66-(COOH) 2 nanoparticles are decorated in the interweaving petal nanosheets of ZnIn 2 S 4 microspheres, while the co-catalyst of MoS 2 is folded at the edge of these interweaving petals. The excellent heterojunctions with highly exposed catalytic active sites are correspondingly built, and the close interfacial interaction between UiO-66-(COOH) 2 , MoS 2 and ZnIn 2 S 4 create a stage for fast transfer of photogenerated electrons, which are both effective for the photocatalytic reaction process. Also, the Z-scheme charge-transfer process improves the oxidizability and reducibility between UiO-66-(COOH) 2 and ZnIn 2 S 4 . As a result, the optimized UiO-66-(COOH) 2 /MoS 2 /ZnIn 2 S 4 photocatalyst exhibits excellent photocatalytic hydrogen production (18.794 mmol h −1 g −1 ) and reduction of Cr(VI) (0.06850 min −1 ) under simulated solar light irradiation, which are 15.3 and 6.7 times higher than that of bare ZnIn 2 S 4 , respectively, and also the prominent stability and excellent recyclability are obtained. This study provides new insights into the research on the Z-scheme system containing MOF components for growing energy and environmental demands.
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2018
·
IF 2.746
Guihua Gao,Yanyan Xing,Tingting Liu,Jian Wang,Xiaohong Hou
Four water stable metal-organic frameworks (MOFs), MIL-101(Cr), MIL-100(Fe), MIL-53(Al), and UiO-66(Zr), were used as adsorbents for concentration of four androgens and progestogens from water. The adsorption abilities of target analytes on the four MOFs were investigated by experimental and molecular simulation strategies, and UiO-66(Zr) was ultimately selected as the sorbent to develop a porous membrane protected micro-solid-phase extraction (μ-SPE) method for simultaneous extraction androgens and progestogens in environmental water samples followed by LC-MS/MS detection. Several variables affecting the extraction efficiency were systematically investigated, including pH, salt concentration, extraction time, kind of desorption solvent, and desorption time. Under the optimized conditions, excellent linearity was obtained in the range of 20.32–2032 ng/L for T, 10.24–1024 ng/L for P, 7.624–762.4 ng/L for TP , and 8.376–837.6 ng/L for MPA . Limits of detection (LODs) and limits of quantification (LOQs) were 10 ng/L and 20 ng/L for T, 4.0 ng/L and 10 ng/L for P, 2.0 ng/L and 7.0 ng/L for TP, and 3.0 ng/L and 8.0 ng/L for MPA, respectively. The recoveries were ranged from 80.5% to 102.4%. Furthermore, the μ-SPE device could be used for at least 10 extractions (RSD < 10.0%). Meanwhile, comparison was made with solid-phase extraction, and the developed method was demonstrated to be a convenient and eco-friendly pretreatment method for water samples.
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2019
·Vol. 187
·期 1
·1-8
·
IF 5.479
Liang Yutao,He Juan,Huang Zhipeng,Li Huayu,Zhang Yunxia,Wang Huige,Rui Chaofan,Li Yuanyuan,You Liqin,Li Kai,Zhang Shusheng
A surface imprinted polymer of type UiO-66-NH2@MIP was prepared by combining molecular imprinted polymers (MIPs) and an amino-functionalized zirconium-based metal-organic framework. Quercetin is used as the virtual template, UiO-66-NH 2 acts as the carrier to which the monomer acrylamide can be copolymerized. The material was characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and Fourier transform infrared spectroscopy. It was used as a sorbent in a solid-phase extraction column. The extraction conditions were optimized. The adsorption capacities for aflatoxins AFB1, AFB2, AFG1 and AFG2 by this SPE and by the commercial SPE were compared. The method was successfully applied to quantify the aflatoxins in grain. Figures of merit include (a) good linearity (range from 0.20–45 μg·kg −1 ) with R 2 (range from 0.9986–0.9994), (b) low detection limits (90–130 ng·kg −1 ), (c) acceptable reproducibility (1.0–5.9%; for n = 6), and (d) relatively satisfactory recovery rates (74.3–98.6%). The new sorbent has good selectivity and reusability.
UiO-66-NH 2 @MIPs were synthesized with modified UIO-66-NH 2 as core and quercetin as pseudo template. A cartridge was prepared with the polymers as the sorbent, and its performance was compared with different commercial SPE cartridges.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）