SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2015
·
IF 2.353
Jiaman Liang,Xiaoyan Deng,Kejun Tan
In this paper, a novel sensing method with a higher sensitivity of perfluorooctane sulfonate (PFOS) than perfluorooctanoic acid (PFOA) has been proposed detection of PFOS in aqueous solution replying on the “off–on” switch of eosin Y/polyethyleneimine (PEI)/PFOS fluorescence system due to the higher affinity of PEI to PFOS than eosin Y. In pH 7.0 Britton–Robinson buffer solution, eosin Y reacts with protonated PEI to form complex by electrostatic attraction, which leads to a strong fluorescence quenching of the eosin Y. When PFOS presents, the fluorescence of eosin Y is recover due to the electrostatic and hydrophobic interactions between PFOS and PEI. The recovered fluorescence intensity is proportional to the concentration of PFOS in the ranging from 0 to 2.0 × 10 −6 mol/L with the limit of detection (LOD, 3 σ ) being 1.5 × 10 −8 mol/L without preconcentration. In this study, the optimum reaction conditions and the interferences of foreign substances were investigated. In addition, the effects of PFOA, the analog of PFOS, on the fluorescence recovery of the system were also studied. The presented approach has been successfully used to detect PFOS in real samples with RSD ⩽2.9%.
研究领域:
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2023
·
IF 4.4
Wenqian Li,Dongsheng Zhao,Wencui Li,Rongmei Wen,Xin Liu,Liying Liu,Ting Li,Liming Fan
By taking advantages of confinement effect can effectively prevent dye aggregation caused luminescent quenching, Eosin Y (EY) was encapsulated into a chemorobust porous CoMOF as secondary fluorescent signal to construct the dual-emitting sensor of EY@CoMOF. And the photo-induced electron transfer from CoMOF to EY molecules induced EY@CoMOF presenting a weak blue emission at 421 nm and a strong yellow emission at 565 nm. Those dual-emission features also endow EY@CoMOF itself great potentials as a self-calibrating ratiometric sensor in visually and efficiently monitoring hippuric acid (HA) in urine, with fast response, high sensitivity and selectivity, excellent recyclable, and low LOD (0.24 μg/mL). Furthermore, based on a tandem combinational logic gate, an intelligent detection system was designed to improve the practicability and convenience of HA detection in urine. To the best of our knowledge, this is the first example of dye@MOF based sensor for HA detection. And this work provides a promising approach for developing dye@MOF based sensors to intelligent detect bioactive molecules.
研究领域:
化学传感器
·
生物医学检测
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2023
·
IF 22.1
Jing-Hang Wu,Tian-Hao Yang,Fei Chen,Feng Zhang,Jie-Jie Chen,Han-Qing Yu
The environmental and safety concerns caused by nitroaromatic compounds (NACs) require a sensitive, reliable, and easy-to-use method for their detection. In this work, we observed that an ultrafast photobleaching occurred when the photoreduction of NACs catalyzed by eosin Y (EY) was terminated. Based on such a semi-cycle photocatalysis , a colorimetric method was developed to quantify NACs with a linear relationship between the pseudo-first-order kinetic constant ( k app ) of EY photobleaching and NACs concentration. This method exhibited a high sensitivity, low detection limit (6.57 ppb), and good anti-interference ability in the presence of various ions or organics in water matrices, enabling satisfactory quantification results for practical water samples. Moreover, the EY-based photocatalysis mechanisms inspires that the ultra-fast EY decoloration in the NAC solution was attributed to the fragment of the photoexcited EY molecule. This work provides a feasible photocatalysis-based NAC detection approach by applying a “off-the-shelf” probe.
研究领域:
环境科学
·
分析化学
✓ 已验证
DOI
高影响因子
Catalysis Science & Technology
·
2018
·Vol. 9
·期 2
·310-315
·
IF 5.365
Yuliang Sun,Yuan Sun,Xing Meng,Yu Gao,Yohan Dall'Agnese,Gang Chen,Chunxiang Dall'Agnese,Xiao-Feng Wang
Ti3C2, though one of the most extensively studied 2D MXenes, is rarely reported in dye-sensitized photocatalysis. Platinum is commonly used as a co-catalyst in photocatalytic hydrogen evolution but it increases the cost and hence restricts the commercialization of this technology. Eosin Y (EY) is widely studied in dye-sensitized systems as it is not only low-cost and easily commercially available, but also exhibits excellent visible light absorption ability. Herein, we oxidized Ti3C2 MXene in water at 60 °C for different times, to form TiO2/Ti3C2 on amorphous carbon (AC) composites. The oxidized MXene was used as a photocatalyst in a dye-sensitized system for hydrogen evolution to replace noble metal co-catalysts such as Pt. The highest hydrogen production rate of 33.4 μmol h−1 g−1 was achieved by the TiO2/Ti3C2@AC-48h composite with the sensitization of 1 mM EY, which was 110 times higher than that of oxidized Ti3C2 without EY. This work shows the potential of 2D MXenes used in dye-sensitized photocatalysis for hydrogen evolution.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
Biomaterials Science
·
2023
·Vol. 11
·期 14
·4930-4937
·
IF 6.6
Birong Fan,Wan Peng,Yu Zhang,Pingsheng Liu,Jian Shen
Photodynamic therapy (PDT) is becoming an efficient antibacterial strategy without drug-resistance. Here, we report a promising reactive oxygen species (ROS) conversion strategy to increase the antibacterial efficiency of an Eosin Y (EOS)-based PDT system. Based on visible-light illumination, EOS generates a high concentration of singlet oxygen (1O2) in the solution. With the introduction of HEPES in the EOS system, it can almost completely convert 1O2 to hydrogen peroxide (H2O2). The orders-of-magnitude increases in the half-lives of the ROS (H2O2vs.1O2) present in the solution can enable more persistent oxidation ability. Thus, it is able to increase the bactericidal efficiency (against S. aureus) from 37.9% to 99.9%, promote the inactivation efficiency of methicillin-resistant S. aureus (MRSA) from 26.9% to 99.4%, and enhance the eradication rate of MRSA biofilm from 69% to 90%. Further in vivo investigation showed that the increased oxidation ability of the EOS/HEPES PDT system can enable quicker healing and maturing (even better than that for vancomycin administration) of MRSA-infected skin wounds on rats. This strategy may find many creative applications for the efficient eradication of bacteria and other pathogenic microorganisms.
研究领域:
药理学
·
微生物学
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生物医学工程
·
传染病学
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产品关联
DOI
PubMed
高影响因子
POLYMER BULLETIN
·
2018
·Vol. 75
·期 11
·4881-4899
·
IF 1.589
Zhang Mengmeng,Chang Liangliang,Zhao Yuanyuan,Yu Zehao
Montmorillonite/polypyrrole (MMT/PPy) nanocomposites were fabricated by in situ polymerization of pyrrole monomer in the presence of MMT. The structures of the nanocomposites were analyzed by X-ray diffraction, Fourier transform infrared spectra, thermogravimetric analysis and transmission electron spectroscopy. Then, the capability of MMT/PPy nanocomposites on the removal of Eosin Y from aqueous solution was systematically studied. The MMT/PPy nanocomposites showed high adsorption capacity toward Eosin Y and a maximum adsorption capacity of 112.9 mg/g at 35 °C was achieved. The adsorption kinetics demonstrated a rapid Eosin Y uptake by MMT/PPy and the experimental data were well fitted to the pseudo-second-order model. Both the Langmuir and Freundlich models were employed to describe the adsorption isotherms, and the results presented that the equilibrium data obeyed the Langmuir model. Thermodynamic parameters of Δ G ° and Δ H ° verified the spontaneous and endothermic nature of the Eosin Y adsorption onto MMT/PPy. Furthermore, the regeneration experiments revealed that MMT/PPy nanocomposites could be reused after treated with hydrochloric acid solution, showing potential applications in purification of dyeing effluents.
研究领域:
材料科学
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环境工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2025
·
IF 4.7
Hezheng Sun,Guoqing Liu,Yi Zhao,Jingcun Shao,Changhui Xin,Yanting Tang,Xin Yu
Bisphenol A is an environmental hormone that shows a significant impact on human health. The removal of bisphenol A substances from the surrounding environment is of great significance for the humanity sustainable development. Current work focuses on synthesizing self-doped Nb 3 O 7 (OH) nanostructure and eosin Y/Nb 3 O 7 (OH) composites with high surface areas through a solvothermal process for bisphenol A degradation under visible-light illumination. The prepared Nb 3 O 7 (OH) sample demonstrated a noticeable photocatalytic performance toward bisphenol A degradation. Notably, the obtained eosin Y/Nb 3 O 7 (OH)-1.0 % composite not only exhibited efficient visible-light harvesting and high surface area but also showed significantly improved charge separation and bisphenol A degradation compared to pristine Nb 3 O 7 (OH) sample. The rate constant of the eosin Y/Nb 3 O 7 (OH)-1.0 % sample for bisphenol A degradation was approximately 0.04252 min −1 , which was 7.85 times that of pristine Nb 3 O 7 (OH) sample. Furthermore, the eosin Y/Nb 3 O 7 (OH)-1.0 % composite achieved approximately 59.76 % mineralization of bisphenol A within 20 min and 75.28 % mineralization within 40 min under visible-light illumination. Additionally, the effects of experimental parameters on bisphenol A degradation and the dye-sensitization mechanism were proposed. The current work suggests the obvious advantages of defective Nb 3 O 7 (OH) nanostructure in fabricating high-performance composite photocatalysts for eliminating emerging pollutants.
研究领域:
环境科学
·
纳米技术
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材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
SPECTROSCOPY LETTERS
·
2025
·
IF 1.6
Na Ni,Yanhua Tang,Nian Ding,Kang Peng,Xinwang Zhang,Qianqian Su
This study used the acidic anionic dye eosin Y (EY) as a resonance Rayleigh scattering (RRS) probe to develop a method for the detection of doxorubicin hydrochloride (DOX). In dilute hydrochloric acid solution medium, eosin Y interacted with each other through hydrogen bonding to form supramolecular aggregates. The addition of doxorubicin hydrochloride induced an ion-conjugation process and dissociated the hydrogen-bonded supramolecular aggregates that eosin Y had formed. As a result, the RRS signal of eosin Y at 534 nm was significantly diminished. The reaction conditions were optimized and the mechanism of RRS intensity reduction was explored. It was found that the main reason for the weakening of the RRS intensity was the decrease in particle size. The range of 0.5–5.0 mg/L is well-represented by the concentration of doxorubicin hydrochloride, which shows decent linear relationship. The linear regression equation was ΔI = 15044c + 10465 with a correlation coefficient R of 0.9995, and a limit of detection of 0.085 mg/L. The recoveries ranged from 97.33% to 102.94%. This work provided a new, sensitive, and cost-effective method for estimating doxorubicin hydrochloride, which can be successfully applied to the estimation of doxorubicin hydrochloride for injection.
研究领域:
分析化学
·
药物分析
·
光谱学
✓ 已验证
产品关联
DOI
高影响因子
Food Analytical Methods
·
2018
·Vol. 11
·期 12
·3380-3390
·
IF 2.245
Tang Jing,Mao Yueyuan,Guo Jiahao,Li Zirong,Zhang Chen,Jin Baokang
A glassy carbon electrode (GCE) was modified with eosin Y that was electrodeposited on GCE via continuous cycling between − 1.6 and 1.5 V (vs Ag/AgCl). This electrode was characterized by scanning electron microscopy and electrochemical impedance spectra. The resulting electrode exhibited excellent electrocatalytic activity toward the oxidation of butylated hydroxyanisole (BHA) and tert-butyl hydroquinone (TBH 2 Q); in addition, the oxidation products of BHA and TBH 2 Q were found to be the same, which was studied by CV and in situ FT-IR spectroelectrochemistry. Under the optimized condition, the oxidation peak currents were linear to BHA/TBH 2 Q in the range from 0.10 to 7.00 μg mL −1 with the detection limits of 0.01 μg mL −1 (S/N = 3) for BHA and 0.015 μg mL −1 (S/N = 3) for TBH 2 Q, respectively. Moreover, the reproducibility and repeatability of the electrode were determined. The proposed method was successfully applied in the simultaneous determination of BHA and TBH 2 Q in several edible oil samples, and satisfactory results when compared with those obtained using high-performance liquid chromatography.
研究领域:
食品科学
·
分析化学
✓ 已验证
DOI
高影响因子
Desalination and Water Treatment
·
2025
·
IF 1
Abdul Haleem,Jaweria Ambreen,Syeda Huma H. Zaidi,Mohamed Soliman,Nadeem Kizilbash,Daliyah Alruwaili,Jamith Basha,Syafiqah Saidin
The fabrication of macroporous materials exhibiting catalytic properties to degrade detrimental toxicants from water has gained significant interest. Herein, acrylamide-based pure cryogels were synthesized by UV-initiated free radical cryopolymerization method and were further incorporated with palladium nanoparticles employing the in situ chemical reduction method. The verification of the functional groups for the cryogels was done by using Fourier-transformed infrared spectroscopy. The formation of cryogels was confirmed by X-ray diffraction, energy-dispersive X-ray and transmission electron microscopic methods, respectively. The macroporous morphological analysis of cryogels was done by scanning electron microscopy. Moreover, Thermo-gravimetric analysis showed that palladium incorporated cryogels exhibit more thermal stability as compared to pure cryogels. The palladium incorporated cryogel was implemented for degrading an organic dye, Eosin Y. The catalysis efficiency of Pd-incorporated cryogels was also compared to a conventional Pd-embedded hybrid hydrogel. The impact of cross-linker content, temperature, and catalyst amount on degradation rate was studied by UV–visible spectroscopy. The degradation time for Eosin Y dye using 0.5 g of Pd-nanoparticles embedded cryogel with 3 % crosslinker content was 10 min at 25 º C. By considering their feasible UV-initiated synthesis route and adsorption enactment, the fabricated cryogel could be applied as a suitable prototype for water clean-up solutions.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
DYES AND PIGMENTS
·
2025
·
IF 4.2
Ziyi Lu,Chang Wang,Hailong Cui,Jinglong Li,Meiyu Zhen,Xiaoqing Xiong
Photodynamic antimicrobial technology is an effective approach for eliminating bacteria. With growing emphasis on personal health, the development of functional textiles with photodynamic antimicrobial properties has emerged as a significant research focus. Here, Eosin Y (EY) was employed as the photosensitizer, and poly(caprolactone) (PCL) served as the substrate. A series of photosensitizer-loaded PCL&EY nanofiber membranes were successfully fabricated using electrospinning. The results demonstrated that these nanofiber membranes exhibited excellent fiber diameter distribution, mechanical properties, and hydrophilicity at a photosensitizer content of 0.034 ± 0.001 wt%. To further optimize the properties of the PCL&EY nanofiber membranes, varying concentrations of bovine serum albumin (BSA) were incorporated into the electrospinning solution to modulate the properties of PCL membrane. Among them, the PCL&15EY&75BSA nanofiber membrane with a BSA concentration of 0.166 ± 0.001 wt% exhibited optimal performance across all evaluated parameters, particularly demonstrating a transformation from hydrophobic to hydrophilic properties. Antimicrobial performance tests revealed that the addition of BSA enhanced the photodynamic antibacterial efficiency of the PCL&EY nanofiber membrane, with the PCL&15EY&75BSA membrane achieving bacteriostatic rates of 95 ± 1 % against Escherichia coli ( E. coli ) and 99 ± 1 % against Staphylococcus aureus ( S. aureus ). To expand their applications, these nanofiber membranes were combined with activated carbon masks, creating functional textiles with both high gas permeability and effective antibacterial properties. Therefore, the strategy of incorporating BSA into the electrospinning solution is an effective approach to improving the performance of nanofiber membrane.
研究领域:
材料科学
·
生物医学工程
·
纳米技术
·
抗菌技术
·
纺织工程
✓ 已验证
产品关联
DOI
高影响因子
POLYMER BULLETIN
·
2019
·Vol. 77
·期 2
·1049-1066
·
IF 1.858
Zhang Mengmeng,Yu Zehao,Yu Hongchao
Ferroferric oxide/polypyrrole (Fe 3 O 4 /PPy) composites were prepared by an in situ polymerization method. Several analysis techniques including X-ray diffraction, Fourier transform infrared spectra, thermogravimetric analysis and scanning electron microscopy are applied to analyze the structure and morphology of Fe 3 O 4 /PPy. The magnetic Fe 3 O 4 /PPy was further used as an adsorbent for removing Eosin Y, methyl orange and brilliant green from aqueous phase. The adsorption kinetics were investigated by pseudo-first-order, pseudo-second-order and intraparticle diffusion models, and the experimental data were well fitted to the pseudo-second order. The equilibrium adsorption data can be described by both the Langmuir and Freundlich isotherm models. The calculated Langmuir maximum adsorption capacities of Eosin Y, methyl orange and brilliant green at 25 °C are 212.31, 149.48 and 263.85 mg/g, respectively. Thermodynamic studies indicated that the adsorption process occurred spontaneously, in an endothermic and physisorption nature, and with increased disorder. Furthermore, the convenient magnetic separability of Fe 3 O 4 /PPy makes it a good candidate for practical application in the removal of organic dyes from polluted water.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）