CATALYSIS LETTERS
·
2025
·Vol. 155
·期 4
·1-19
·
IF 2.4
Cheng Liu,Zhu Zhexin,Wang Gangqiang,Du Shiting
Since Peroxymonosulfate (PMS) is readily available and can produce sulfate radicals with a stronger oxidation capacity, the Fenton-like system Fe 2+ /PMS has gradually replaced Fe 2+ /H 2 O 2 system in organic pollutants degradation. However, the Fe 3+ /PMS system has almost no degradation effects, with the conversion of Fe 2+ to Fe 3+ being the rate-limiting step in the Fe 3+ /PMS system. In this paper, graphite-like phase carbon nitride (g-C 3 N 4 ) was employed to activate PMS using trace amounts of Fe 3+ for the treatment of water pollution under sunlight, and the Fe 3+ /g-C 3 N 4 /PMS system demonstrated the ability to rapidly degrade a wide range of difficult-to-degrade organic pollutants. The Fe 3+ /g-C 3 N 4 /PMS system was able to completely degrade carbamazepine (CBZ) within 30 min under sunlight. The fundings indicated that this system effectively improved the stringent limitations typically associated with Fenton process regarding the feed ratio of metal ions to oxidants, and could efficiently degrade CBZ across a broad pH range. In addition, the Fe 3+ concentration of 6.17 × 10 −6 M was used in the experiments to avoid the generation of large amounts of “iron sludge”. The trap burst experiments, DMSO oxidation experiments and electron paramagnetic resonance spectroscopy experiments indicated that O 2 · − and 1 O 2 exerted the major effectiveness in the photocatalytic degradation reaction of CBZ, and SO 4 · − and · OH jointly promoted the CBZ degradation. Graphical
研究领域:
环境科学
·
化学
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DOI
高影响因子
Journal of Analysis and Testing
·
2021
·Vol. 5
·期 1
·19-29
·
IF 0
Liu Zhong-gang,Xiao Meng,Yang Rong-zhe,Zhou Qiao-qiao,Ye Hui-fen,Yi Chang-qing
This work reports on a smartphone-based quantitative POCT system which consists of a paper-based microarray chip, a homemade LEGO dark-box, and a smartphone installed with custom-designed FChip-APP, for on-site quantitation of Fe 3+ , Vitamin 12 (VB 12 ), and folic acid (FA). Collection and automatic analysis of fluorescence turn-off response of three kinds of fluorescent nanoprobes which are coated onto filter papers by a smartphone-based device is the principle behind this study. The POCT system exhibits good analytical performance for multiplexed analysis of Fe 3+ , VB 12 and FA with a wide linear range (Fe 3+ , 1.0–14.0 μg mL −1 ( R 2 = 0.983); VB 12 , 1.35–40.0 μg mL −1 ( R 2 = 0.991); FA, 2.0–26.0 μg mL −1 ( R 2 = 0.994)) and low detection limit (Fe 3+ , 0.35 μg mL −1 ; VB 12 , 0.47 μg mL −1 ; FA, 0.56 μg mL −1 ). The cost and weight of the whole system are ~ $220 and ~ 600 g per set, highlighting its cost-effectiveness and portability. The simple operation procedures and user-friendly interface of the FChip-APP validate the ease-of-use feature of the reported system. This versatile smartphone-based quantitative POCT system provides a cost-effective and easy-of-use method for screening the context-specific causes of anemia and thus its effective interventions in the future, especially in resource-limited areas.
研究领域:
医学检测
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生物传感
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移动健康
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DOI
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
·
2018
·Vol. 56
·期 11
·865-876
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IF 2.499
Zuxiang Xu,Jinhui Li,Guorong Gao,Zongbao Wang,Yang Cong,Jing Chen,Jingbo Yin,Lei Nie,Jun Fu
Tough hydrogels have great potentials in soft robotics, artificial muscles, tissue replacement, and so on. Here we introduce novel tough hydrogels crosslinked by triblock copolymer (F127DA) micelles and metal coordination. The gels showed outstanding tensile strength (∼1–11 MPa), toughness (∼4–32 MJ m −3 ), and excellent self-recovery properties (∼56.8–87.2% toughness recovery in 9 min at room temperature). The mechanical and self-recovery properties could be manipulated by varying contents of micelles and/or COO − groups. Dynamic mechanical analysis of the hydrogels revealed apparent activation energy and relaxations for both physical interactions. In situ small-angle X-ray scattering measurements on hydrogels upon stretching revealed micelle deformations. XPS measurements on hydrogels before and after stretching revealed significant changes in the binding energy of Fe 3+ ions in the gels, suggesting the rupture of coordination bonds. The experimental results strongly suggest a synergistic effect from the micelle-crosslinking and Fe 3+ –COO − coordination on the strength, toughness, and self-recovery of the hydrogels. © 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2018 , 56 , 865–876
研究领域:
材料科学
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高分子化学
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生物医学工程
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DOI
高影响因子
CRYSTENGCOMM
·
2023
·Vol. 25
·期 8
·1232-1239
·
IF 3.1
Gui-Mei Huang,Shuang Li,Meng-Xia Ma,Shi-Ming Li,Wen-Qiang Li,Qing-Ling Ni,Liu-Cheng Gui,Xiu-Jian Wang
Four MOFs with mixed ligands, [Zn3(3-BABA)2(bpa)2(H2O)2]n (1), [Cd3(3-BABA)2(bpa)2]n (2), [Cd3(3-BABA)2(bpe)2]n (3), and {[Cd3(3-BABA)2(bib)(DMA)2]·H2O}n (4) (where 3-H3BABA = 4′,4′′′-(((2-carboxyphenyl)azanediyl)bis(methylene))bis(([1,1′-biphenyl]-2-carboxylic acid)), bpa = 4,4′-azopyridine, bpe = 1,2-bis(pyridin-4-yl)ethane, and bib = 1,4-bis(imidazole)butane), have been synthesized. They are characterized by single crystal X-ray diffraction, X-ray powder diffraction (XRPD), thermogravimetric analysis (TGA) and Fourier transform infrared (FT-IR) spectroscopy. In 1, two 3-BABA and two bpa bridge three Zn2+ ions to form a bicyclic [Zn3(3-BABA)2(bpa)2] unit which is further bridged by carboxylate groups with its adjacent units, resulting in a one-dimensional chain. In 2, 3 and 4, the [Cd3(CO2)6] units are bridged by six 3-BABA ligands into a three-dimensional structure. However, the adjacent [Cd3(CO2)6] units in 2 and 3 are doubly-bridged simultaneously by corresponding pyridyl ligands, while the adjacent [Cd3(CO2)6] units in 4 are singly-bridged simultaneously by corresponding pyridyl ligands. The luminescence sensing investigation indicates that compound 1 exhibits extremely sensitive and selective detection of Cu2+ with a detection limit of 0.363 μM, and compounds 2–4 show extremely sensitive and selective detection of Fe3+ with detection limits of 0.539 μM, 0.265 μM, and 0.748 μM, respectively. Competitive experiments in the presence of interfering cations with 1–4 revealed no major change in the quenching efficiency.
研究领域:
化学
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材料科学
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DOI
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 61
·36971-36979
·
IF 3.119
Hua Tian,Yongcheng Dai,Wenzhe Fu,Haifang Liu,Mengting Li,Meiyuan Lv,Xueqiong Yin
In this work, a multifunctional ratiometric fluorescence (FL) nanohybrid (CSCDs@DC) was synthesized from chitosan based carbon dots (CSCDs) and dansyl chloride (DC) at room temperature. The CSCDs@DC revealed strong FL intensity, great stability and excellent anti-photobleaching properties. Herein, CSCDs@DC was responsive to pH value in the range of 1.5–4.0 and exhibited color-switchable FL properties between acidic and alkaline environments. In addition, CSCDs@DC showed good selectivity and sensitivity towards Fe3+ ions. A good linear relationship for the Fe3+ ion detection was obtained in the range from 0 μM to 100 μM, with a detection limit of 1.23 μM. What's more, CSCDs@DC can be used as a fluorescent ink. It expressed superior optical properties after 3 months of storage or continuous exposure to UV light for 24 h. This study suggested that CSCDs@DC had potential in the detection of pH and metal ions, as well as showing promising application in the anti-counterfeiting field.
研究领域:
材料科学
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分析化学
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生物医学工程
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DOI
高影响因子
Nanoscale Research Letters
·
2016
·Vol. 11
·期 1
·1-9
·
IF 2.584
Sun Chun,Zhang Yu,Wang Peng,Yang Yue,Wang Yu,Xu Jian,Wang Yiding,Yu William W.
Garlic was used as a green source to synthesize carbon dots (CDs) with a systematic study of the optical and structure properties. Ethylenediamine was added into the synthesis to improve the photoluminescence quantum yield (PL QY) of the CDs. Detailed structural and composition studies demonstrated that the content of N and the formation of C–N and C=N were critical to improve the PL QY. The as-synthesized CDs exhibited excellent stability in a wide pH range and high NaCl concentrations, rendering them applicable in complicated and harsh conditions. Quenching the fluorescence of the CDs in the presence of Fe 3+ ion made these CDs a luminescent probe for selective detection of Fe 3+ ion.
研究领域:
材料科学
·
分析化学
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产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2022
·
IF 3.428
Jia Wang,Deyue Yan,Wei Huang
A fluorescence metal-organic framework [Zn 3 (APT) 4 ]·2H 2 O (Zn-APT) was synthesized from Zn(NO 3 ) 2 ·6H 2 O and 2-amino-6-purinethiol (ATP) by the solvothermal reaction. Zn-APT has a novel compact structure with a nbo topology type. The analyses of single-crystal diffraction reveal that Zn-APT crystallizes in a cubic crystal system and F d 3 ¯ c space group. Based on a large amount of π-conjugated organic ligands of ATP and d 10 metal center of Zn 2+ , Zn-APT can emit strong luminescence. It can be used as a fluorescent probe to detect Fe 3+ ion effectively. The detection limit is 0.28 μM and K sv (quenching efficiency) is 2.1 × 10 4 M −1 . In addition, Zn-APT can adsorb hemoporphyrin dihydrochloride to produce a red-brown crystal Zn-APT-PH. Interestingly, it can also be used to detect Fe 2+ ion efficiently with the detection limit of 0.12 μM and K sv of 1.9 × 10 4 M −1 .
研究领域:
化学
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环境科学
·
材料科学
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DOI
高影响因子
INORGANICA CHIMICA ACTA
·
2022
·
IF 3.118
Zong-Ying Li,Hong-Xia Zhang,Tian-Sheng He,Hong-Xin Jiang,Xiao-Wei Liu,Li-Na Zhu,Xiao-Zeng Li,De-Ming Kong
A two-dimensional (2D) water-stable Cd (II) luminescent coordination polymer ( 1 ), namely {[CdLCl 2 ]} n , was obtained through assembly of a new 2-deoxy- d -ribose derivative ligand (L) with CdCl 2 , 1 showed high stability in water. Further investigation showed that 1 can be used as luminescent probe for the organoarsenic compound Roxarsine (ROX) with high selectivity and sensitivity, high quenching constants (K SV = 2.34 × 10 4 M −1 ), low limits of detection (LOD) (0.16 μM) and good recyclability in aqueous media. In addition, this luminescent probe can detect some inorganic harmful ions (Fe 3+ , Cr 2 O 7 2− and CrO 4 2− ) with excellent versatility. The detection mechanism was proved that the quenching was caused by competitive absorption and resonance energy transfer effect between 1 and analytes. More strikingly, a simple 1 -based test strip was developed owing to the quick response and recyclability of 1 , which shows visible quenching signals under UV light even when analytes concentrations are as low as 5 μM. This work has provided an effective method for the design of multifunctional CP luminescent sensors for pollutants detections in aqueous media.
研究领域:
化学
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环境科学
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分析化学
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2020
·Vol. 137
·期 32
·48937
·
IF 2.52
Kuiyong Chen,Yue Liu,Yongjian Hu,Meiyu Yuan,Xiuwen Zheng,Xiaobin Huang
Amino-functionalized highly crosslinked organic–inorganic hybrid polyphosphazene microspheres were prepared via a one-pot polycondensation method and served as a fluorescent sensor for the detection of Fe 3+ in solution. With the introduction of p -phenylenediamine unites, the polyphosphazene microspheres could be endowed with fluorescent property and abundant active amino groups on the surface. The microspheres were further used as the fluorescent sensor for the detection of Fe 3+ . Fluorescence study showed high sensing sensitivity and selectivity of the microspheres, and the limit of detection was determined as 0.076 μM for Fe 3+ . Active amino groups on the surface could efficiently improve the detection sensitivity of Fe 3+ . Moreover, highly crosslinked organic–inorganic hybrid structure was beneficial to the photostability and thermostability, enabled the microspheres to be possible for constructing practicable sensors. This work is expected to inspire the design of advanced polyphosphazene-based fluorescent sensors for applications in analytical detection. © 2020 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020 , 137 , 48937.
研究领域:
材料科学
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分析化学
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DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2021
·
IF 4.598
Suyan He,Li Xiao,Luminita Marin,Yike Bai,Xinjian Cheng
The development of water-soluble polymer dyes is of great practical and scientific significance. In this article, small fluorescent molecule boron-dipyrromethene (BODIPY) bearing C=C bond was synthesized first. And then, via Suzuki reaction, recognition groups were introduced into the 2, 6 positions of BODIPY. Thus polymerizable fluorescent monomers were prepared. Finally, methacrylic acid (MAA) was copolymerized with the as-prepared small molecular fluorescent monomers via reversible addition-fragmentation chain transfer (RAFT) polymerization methodology. Four fully-water-soluble polymer sensors with BODIPY moieties in the end of the polymer chain were obtained eventually. In the presence of long PMAA chain, and by the assistance of it, BODIPY could be dissolved totally in water. These polymer sensors exhibited sensitive and selective recognition ability to Fe 3+ . Even the content rate of BODIPY was as low as 0.5% of the polymer (calculated from element analysis), the detection limit could reach 1.2 μM. The sensors with two recognition groups in one BODIPY unit were more sensitive than that with one recognition groups in each BODIPY unit. The sensing mechanism was investigated as well. By endowing the water solubility to organic sensors, the application scope could be greatly enlarged in sensing metal ions in aqueous environments. This work provides a method to develop water soluble high performance polymer sensors.
研究领域:
材料科学
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化学传感器
·
分析化学
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产品关联
DOI
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
·
2024
·
IF 6
Hongpeng Yu,Yujuan Xiang,Kegang Wu,Dong He,Xianghua Chai,Lin Xu,Yongqi Cheng,Xuejuan Duan,Wenhui Li
In this study, Hakka yellow wine lees carbon dots (HYWL-CDs) with an average diameter of 1.75 nm are synthesized from Hakka yellow wine lees (HYWL) via a one-pot hydrothermal method. Results of X-ray photoelectron spectroscopy and FTIR reveal the presence of C=C and –OH in the HYWL-CDs. Additionally, the HYWL-CDs present excitation-wavelength dependence, with maximum excitation and emission wavelengths of 360 and 440 nm, respectively. The fluorescence of the HYWL-CDs can be quenched by Fe 3+ . The Fe 3+ concentration is correlated linearly with the quenching rate over a linear range of 0.6–1.1 mg/mL, and the limit of detection is 0.18 μg/mL. And phenols have been shown to be present in HYWL-CDs, and the color reaction between phenols and FeCl 3 is most likely the mechanism by which FeCl 3 causes fluorescence burst in HYWL-CDs. Moreover, the HYWL-CDs demonstrate significant potential for detecting NaFeEDTA in iron-fortified soy sauces, the linear-fit equation was y = 185.38x + 1024.6 (R 2 = 0.9995) The HYWL-CDs are loaded onto paper strips, iron-fortified straw mushroom dark soy sauce showed noticeable color changes, which allows one to differentiate normal soy sauce from iron-fortified soy sauce more conveniently and provides a new perspective for the high-value utilization of yellow wine lees.
研究领域:
材料科学
·
分析化学
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2021
·Vol. 138
·期 48
·51601
·
IF 3.125
Qianru Xu,Yaqi Zhang,Ruquan Zhang,Yongzhen Tao
Polyelectrolyte hydrogels with spinnability and electroresponsive were prepared from xanthan gum (XG) and gelatin. Oscillatory rheological measurements were utilized to explore mechanical properties and thermal stability of the resultant XG-Gelatin5 hydrogels. The XG-Gelatin5 hydrogels possessed higher strength and larger critical strain than these of the XG hydrogels, demonstrating existence of synergistic interactions. The XG-Gelatin5 hydrogels were stable in temperature range of 20–60°C, and gradually release drug with controlled manner in neutral and acid medium at 37°C. The self-recoverable and thixotropic XG-Gelatin5 hydrogels were extruded to form hydrogel fibers, and the dried hydrogel fibers rapidly bend towards cathode under applied voltage. Long hydrogel fibers were harvested with enhancement by Fe 3+ ions, and were weaved and braided to obtain hydrogel fiber constructs. The XG-Gelatin5 hydrogel fibers with electroresponsive and controlled drug release possess potential applications in biomaterials, tissue engineering, and drug carrier fields.
研究领域:
生物材料
·
组织工程
·
药剂学
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DOI
高影响因子
危险品化学品经营许可证（带存储）