JOURNAL OF LUMINESCENCE
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2023
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IF 3.6
Xue Wen,Chengyue Xin,Wenjun Zhang,Cong Ding,Zhongfa Li
Luminescent dye molecules have attracted enormous research interest, whereas, there are inherent drawbacks that limit their utilization across a broad variety of fields. Herein, a novel dual-luminescent carboxylic acid functionalization Eu 3+ /Hoc@UIO-66(H 3 BTC) (Hoc = 7-hydroxycoumarin) was prepared by introducing luminescent dye molecules (Hoc) into the UiO-66-type dual-ligand metal−organic frameworks (MOFs) utilize the encapsulation approach and postsynthetic modification (PSM). UIO-66(H 3 BTC) was constructed using 1,4-dicarboxybenzene (TPA) as the first ligand, which can restrict the aggregation-induced quenching of Hoc dyes and maintains the Hoc dyes stably included after preparation. 1,3,5-benzenetricar boxylic acid (H 3 BTC) was used as a second ligand to sensitize Eu 3+ ions for the antenna effect emission and provide detection sites. Eu 3+ /Hoc@UIO-66(H 3 BTC) material possesses blue luminescence from Hoc molecules as well as red luminescence from Eu 3+ when irradiated by UV lamp, which can be used for ratiometric luminescence detection of Cu 2+ /Fe 3+ through reference to the intensity ratios of two emitting peaks. Eu 3+ /Hoc@MOFs(H 3 BTC) as a luminescence sensor, displays an ultrahigh sensitivity (Cu 2+ :4.58 μM, Fe 3+ :18 μM), strong ant-interference ability, and fast response for detecting analytes. This project demonstrates that the dual-ligand Zr-based MOFs and luminescence dyes offers a novel ratiometric luminescence detection platform for heavy metal ions visible identification.
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Journal of Environmental Chemical Engineering
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2023
·
IF 7.7
Hanmeng Yuan,Lu Xing,Jia Wei,Zhimin Zhao,Junlei Wang,Hongshuai Gao,Yi Nie
Heavy metal contamination is widely present in the spinning field. Some heavy metal ions such as Fe 3+ may accumulate in the coagulation bath using ionic liquids (ILs) as green solvents to prepare regenerated cellulose fibers (RCFs), which seriously affect the performance of RCFs and the subsequent regeneration of ILs. This study proposed a new strategy to selectively adsorb Fe 3+ from ILs aqueous solution using carboxyl-functionalized wood microchannel (CW). The CW was optimized by citric acid concentration, reaction time, and temperature using carboxyl group contents as an indicator. The physic-chemical properties of CW were characterized, and its adsorption performance for Fe 3+ was also evaluated in a water system. Furthermore, the adsorption selectivity of CW for Fe 3+ and ILs was investigated. The results demonstrate that the CW had a high adsorption ratio for Fe 3+ (94.73%), while that for ILs was 4.20%. The selective adsorption mechanism, in which the Fe 3+ is mainly separated from ILs aqueous solution by complexation with carboxyl group, was confirmed by FTIR, XPS, MIP, and DFT calculation. Accordingly, this paper may provide a new strategy to selectively adsorb Fe 3+ from ILs aqueous solution, thus offering an economical and efficient method for ILs recovery and water purification .
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2018
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IF 2.829
Xiaoxia Ye,Yiwen Cui,Le Ke,Kaiyang Gao,Xin Huang,Bi Shi
A robust and 3D superhydrophobic composite sponge was facilely prepared by stable coating of multiple walled carbon nanotubes (MWCNTs) onto melamine sponge (MS) using polyphenol-Fe 3+ complexes as the low-cost and efficient adhesives. The as-prepared superhydrophobic composite sponges featured ultra-low density, large porosity, high robustness and elasticity, as well as flame resistance. The loading of MWCNTs influenced the superhydrophobicity of sponge, and the optimized loading of MWCNTs was determined to be 3.0%, with a water contact angle of 159.8°. The 3D superhydrophobic sponge exhibited high absorption capacity to a wide range of oils and organic solvents , up to 38–127 times of its own weight dependent on the variety of oil and organic solvent. After 10 recycles of repeative absorption, the loss of absorption capacity was as low as 0.9% per cycle. The 3D superhydrophobic sponge was also applied for continuous separation of spilled oil from water with a separation efficiency of 97%. Our approach could also be extended for coating other carbon materials on MS, including graphene and activated carbon. The resultant sponges were still superhydrophobic and exhibited high separation ability for immiscible oil/water mixture.
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APPLIED CATALYSIS A-GENERAL
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2018
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IF 4.521
Wenjuan Shuai,Cun Liu,Yuheng Wang,Fengxiao Zhu,Dongmei Zhou,Juan Gao
Diethyl phthalate ester (DEP) can be degraded in Fe 3+ -UV- aliphatic/phenolic carboxyl acids systems, and the degradation can be significantly influenced by different physical chemical properties of the organic acids. In this study, a density function theory (DFT) approach combined with multilinear regression analysis demonstrates that the lowest unoccupied molecular orbital energy ( E LUMO ) significantly negatively influenced DEP degradation. The correlation coefficient of the regression is −19.3 mM L −1 h −1 . The standardized partial correlation coefficient is −0.674. The aliphatic acids group has higher catalytic ability than the phenolic carboxyl acids group, and by shifting the dominant LUMO configuration from C 3s3d to Fe 4s3d orbitals, Fe 3+ significantly accelerates the catalytic reactions of the aliphatic acids/UV systems. Further analysis demonstrates that electron withdrawing hydroxyl group on the aliphatic acids increases the photo catalytic effects of aliphatic acids/UV system. This study highlights the important role of E LUMO of organic acids on their photocatalytic ability towards degradation of organic pollutants .
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TALANTA
·
2024
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IF 5.6
Ning Ding,Ruoqing Liu,Bo Zhang,Ningru Yang,Mingwei Qin,Yin Zhang,Zhouping Wang
In this study, a novel fluorescent nanoprobe (ZIF-90@FSS) was constructed using a zeolite imidazolium ester skeleton (ZIF-90) incorporating sodium fluorescein within its porous structure. Notably, this nanoprobe exhibited regular fluorescence “off” detection performance of Fe 3+ in actual samples and living cells. The concentration range of 0–150 ng/mL exhibited a lowest detection limit of 0.26 ng/mL. A nanofiber paper-based platform (VL78/ZIF-90@FSS) was further developed by coupling the prepared nanoprobe to a multi-dimensional fiber paper via C N bonds, enabling rapid visual white light colorimetric and fluorescence imaging of Fe 3+ within 2 min. The constructed nanoprobe and its paper-based detection platforms demonstrated a stable recovery range in tap water, beer, and soy sauce samples during spiking-recovery assessments. The recovery rates ranged from 98.46 % to 108.24 % for the nanoprobe and from 91.75 % to 108.71 % for the nanofiber paper-based platform. Therefore, the developed nano-fluorescent sensor and paper-based nanofiber sensing platform offer a promising strategy for the visual detection of Fe 3+ , while also presenting novel and valuable methods to investigate the regulatory mechanisms of Fe 3+ in living cells.
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JOURNAL OF FOOD COMPOSITION AND ANALYSIS
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2024
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IF 4
Yu He,Suqing Liu,Feng Xie,Yan Zhou,Xiaosheng Yang
In this study, we successfully synthesized green luminescent carbon dots by using green tea residue as the precursor of carbon source. Based on the internal filter effect (IFE), the fluorescence emission intensity of the probe decreased significantly with the increase of Fe 3 + concentration. Based on this, a linear relationship between Fe 3 + concentration and the fluorescence emission intensity of the probe was established to semi-quantitatively detect Fe 3 + . The results showed that the linear range was 1–400 μM, and the detection limit was 3.58 μM. In addition, the probe was further applied to actual samples, and it was found that the recovery rate was between 97.75% and 104.59%, and the relative standard deviation was below 1.81%. These findings underscore the considerable potential of the carbon dots for practical Fe 3+ detection applications. In a further application, the fluorescent carbon dots were diluted and directly employed to stain Caco-2 cells. Remarkably, even after 10 and 20-fold dilutions, the Caco-2 cells displayed vivid fluorescence at the green excitation wavelength. This outcome suggests a promising avenue for the application of fluorescent carbon dots in the field of biology.
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JOURNAL OF FLUORESCENCE
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2016
·Vol. 26
·期 3
·977-985
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IF 1.601
Geng Tong-Mou,Wang Xie,Jiang Hui,Song Wan,Ni Ruo-Fan,Chen Jian,Wang Yu
An acrylic monomer bearing xanthene group, N-oxethyl acrylate-N′-rhodamine B hydrazide (ARBHE) was synthesized from N-hydroxyl ethyl-N′-rhodamine hydrazide (RBHE) and acryloyl chloride (Ac) in the presence of triethylamine in dry dichloromethane (CH 2 Cl 2 ) at room temperature. The synthesized ARBHE was identified by FTIR, 1 H NMR spectra and elementary analysis. Copolymer poly(AM-ARBHE) of ARBHE and AM was synthesized with thermal initiator by free radical precipitation polymerization and it was characterized by the method of FTIR and 1 H NMR. Its molecular weights (M η ) was 7.03 × 10 3 g mol −1 and the content of rhodamine units in the polymer chains was 1.44 % in mole fraction. The ability of the poly(AM-ARBHE) to detect different metal cations (Ag + , Ba 2+ , Cd 2+ Co 2+ , Cr 3+ , Cu 2+ , Co 2+ K + , La 3+ , Mg 2+ , Na + , Ni 2+ , Pb 2+ , Fe 2+ , Fe 3+ , Hg 2+ and Zn 2+ ) in water was investigated. Upon addition of Cr 3+ , Fe 3+ or Hg 2+ ions to the aqueous solution, visual color change and fluorescence enhancement were observed. Moreover, other metal ions did not induce obvious changes to the fluorescence spectra except to Fe 2+ . The detection limit of poly(AM-ARBHE) was less than 1 × 10 −11 M. The results suggest that this copolymer may offer potential as a polymeric sensor for Cr 3+ , Fe 3+ and Hg 2+ ions in water.
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ACS Applied Materials & Interfaces
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2016
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IF 7.145
Li Jin,Renjie Huo,Runping Guo,Fei Li,Dawei Wang,Ye Tian,Qingyuan Hu,Xiaoyong Wei,Zhanbing He,Yan Yan,Gang Liu
The electrostrictive effect has some advantages over the piezoelectric effect, including temperature stability and hysteresis-free character. In the present work, we report the diffuse phase transitions and electrostrictive properties in lead-free Fe3+-doped 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 (BZT-0.5BCT) ferroelectric ceramics. The doping concentration was set from 0.25 to 2 mol %. It is found that by introducing Fe3+ ion into BZT-0.5BCT, the temperature corresponding to permittivity maximum Tm was shifted toward lower temperature monotonically by 37 °C per mol % Fe3+ ion. Simultaneously, the phase transitions gradually changed from classical ferroelectric-to-paraelectric phase transitions into diffuse phase transitions with a weak relaxor characteristic. Purely electrostrictive responses with giant electrostrictive coefficient Q33 between 0.04 and 0.05 m4/C2 are observed from 25 to 100 °C for the compositions doped with 1–2 mol % Fe3+ ion. The Q33 of Fe3+-doped BZT-0.5BCT ceramics is almost twice the Q33 of other ferroelectric ceramics. These observations suggest that the present system can be considered as a potential lead-free material for the applications in electrostrictive area and that BT-based ferroelectric ceramics would have giant electrostrictive coefficient over other ferroelectric systems.
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ANALYTICAL BIOCHEMISTRY
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2017
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IF 2.334
Zhonghua Xue,Xiaofen Wang,Honghong Rao,Xiuhui Liu,Xiaoquan Lu
Many strategies have been explored for selectively and sensitively detecting cysteine in different samples. Here, a novel colorimetric sensor based on self-assembly nanostructures of Fe 3+ -H 2 O 2 /Tetramethylbenzidine system with dual-level logic gate function and colorimetric determination of cysteine were firstly explored. The proposed Fe 3+ -H 2 O 2 -TMB system provides a sensitive optical signal due to the selectively reductive ability of cysteine to the oxidized TMB and thus could be successfully applied to the construction of instant on-site visual detection method with a paper based test strip for cysteine determination in a sample solution as well as for a dual-level logic gate fabrication.
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SENSORS AND ACTUATORS B-CHEMICAL
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2017
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IF 5.401
Tao Zheng,Zhenxiang Xu,Yong Zhao,Hongqi Li,Rong Jian,Congcong Lu
A spiropyran-appended polysiloxane ( SP-Si ) was synthesized and characterized. The photochromic SP-Si has good thermal stability and exhibits high fatigue resistance to light. SP-Si acts as a dual colorimetric and spectroscopic probe for determining multi-scale pH over a wide range of 1∼14, and for detection of Ag + and Fe 3+ ions. Based on the transformation from colorless SP-Si solution without absorption at 440 nm to brown SP-Si /Ag + showing extremely strong absorption at 440 nm by addition of Ag + ions and subsequent transformation from brown to colorless SP-Si /Ag + /Hg 2+ with very weak absorption at 440 nm after addition of 1 equivalent of Hg 2+ ions, SP-Si /Ag + system serves as a dual colorimetric and spectroscopic probe for highly selective and sensitive detection of Hg 2+ ions. The detection is not interfered by common competitive metal ions such as Na + , K + , Li + , Ni 2+ , Fe 2+ , Zn 2+ , Co 2+ , Sr 2+ , Cu 2+ , Al 3+ , Ce 3+ and Cr 3+ . Applicability of SP-Si for real water sample analysis has been proved.
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SENSORS AND ACTUATORS B-CHEMICAL
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2016
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IF 4.758
Xuefeng Wang,Hua Wang,Shengyu Feng
“Silicon-cored” compounds are well known for their high value glass transition temperature, high thermal stability and excellent optical properties, but the excellent optical properties was not used for fluorogenic probes especially for Fe 3+ probe. In this paper, a novel Fe 3+ probe based on thiophene functionalized silane, namely, bis[3,4-diphenyl-2,5-di(2-Thienyl)phenyl]methylphenylsilane (MPS) was designed and synthesized. MPS exhibits aggregation-induced emission enhancement (AIEE) property in water/tetrahydrofuran mixtures because of restricted intramolecular rotation. The abnormal optical properties enable MPS to detect Fe 3+ in aqueous-based solutions. The binding behavior of MPS aggregates to Fe 3+ and other transition metal ions were studied through UV–vis, fluorescence spectroscopy, and scanning electron microscopy. Exceptional fluorescence quenching of MPS occurred during Fe 3+ binding. The calculated detection limit was at ppb level, and the complex ratio of MPS to Fe 3+ is approximately 1:1. MPS has both exemplary activity and high selectivity toward Fe 3+ even in the presence of other metal ions. The test conditions were also expanded from water to bovine serum albumin and solid films. This study was an advancement for the application of “silicon-cored” compounds and provides guidance for using simple, low-cost, and high-selectivity Fe 3+ probes in aqueous solutions and in clinical applications.
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DYES AND PIGMENTS
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2016
·
IF 4.055
Yaran Du,Naizhong Song,Xueju Lv,Bin Hu,Weihong Zhou,Qiong Jia
A post-synthetic modification method was developed to prepare fluorescent metal organic frameworks by the covalent interaction of ethoxycarbonyl isothiocyanate with amine functionalized UMCM-4. X-ray diffraction spectrometry , X-ray photoelectron spectrometry, elemental analysis , Fourier-transformed infrared spectroscopy, nuclear magnetic resonance spectrometry, thermogravimetric analysis/derivative thermogravimetry analysis, and nitrogen sorption isotherms were employed to characterize the modified metal organic frameworks. With high emission efficiency and excellent fluorescence stability, the sensing properties of Fe 3+ were studied. Possible mechanisms of energy and electron transfers between the target and the fluorescent probe were demonstrated. Effects of response time, Fe 3+ concentration, and other metal ions on the fluorescence intensity were also studied.
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