MATERIALS CHEMISTRY AND PHYSICS
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2021
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IF 4.094
Wudong Liu,Jie Zhang,Xiangbiao Yin,Xinyi He,Xinpeng Wang,Yuezhou Wei
Through a simple hydrothermal reaction , LEuH-Cl (where LEuH and Cl denote layered europium hydroxide and a chlorine ion, respectively) was synthesized. Its structure and properties were similar to those of layered double hydroxides (LDHs). The material was composed of europium hydroxide host layers with a positive charge and a guest interlayer with chlorine ions. The hydrotalcite-like structure gives it excellent anion exchange abilities, and the host shows an intense photoluminescence (PL), mainly through 5 D 0 → 7 F J (J = 0,1,2,3, and 4). MnO 4 − or Cr 2 O 7 2− can be directly adsorbed by LEuH-Cl in an aqueous solution due to the large number of exchangeable chlorine ions, thereby resulting in a static quenching effect (SQE) and forming an inner filter effect (IFE) system, which leads to the direct quenching of the PL intensity. Based on this characteristic, the concentration of these two substances in an aqueous solution can be detected quickly and simply. Based on the experimental results, LEuH-Cl exhibited high selectivity and sensitivity toward MnO 4 − and Cr 2 O 7 2− in an aqueous solution. The detection limits of MnO 4 − and Cr 2 O 7 2− were calculated to be 3.43 and 1.19 μM, respectively. This proved the feasibility of using the material for the direct detection of multiple substances. The quenching caused by the anion exchange of layered rare-earth hydroxides (LRHs) was further explored.
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
ANALYTICAL CHEMISTRY
·
2023
·
IF 7.4
Wenlin Ma,Lihua Pang,Jinhua Liu,Lei Wen,Huili Ma,Yinhui Li,Zhihui Xu,Chengwu Zhang,Hai-Dong Yu
Real-time chemical and biological sensing in vitro is important for application in health and environmental monitoring. Thus, a more rapid and stable detection method is urgently needed. Herein, an immediate-stable real-time fluorescent immunosensor with a high response speed (∼100%, <1 s) and approximately zero steady-state error is constructed. The developed sensor is based on the MnO4–-triggered in situ immediate-stable fluorogenic reaction between dopamine and orcinol monohydrate to produce azamonardine (DMTM). The obtained DMTM is identified and characterized by high-resolution mass spectrometry, 1H NMR spectroscopy, 13C NMR spectroscopy, and theoretical calculations. The present sensor achieves a highly sensitive detection of dopamine (DA) with a limit of detection (LOD) of 10 nM as well as alkaline phosphates (ALP) with an LOD of 0.1 mU/mL by using orcinol monohydrate phosphate sodium salt as a substrate. As a proof of concept, ALP-triggered fluorescence ELISA using cardiac troponin I (cTnI) as a model antigen target is further constructed. The developed real-time sensor achieves the detection of cTnI with an LOD of 0.05 ng/mL. Moreover, the sensor proposed by us is successfully applied to assess the cTnI level in clinical serum specimens and yields results consistent with those obtained by the commercial ELISA method. The immediate-stable real-time fluorescence immunosensor provides a promising and powerful platform for the trace detection of biomolecules in clinical diagnosis.
研究领域:
分析化学
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生物化学
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医学诊断
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环境监测
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临床化学
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产品关联
DOI
PubMed
高影响因子
Carbon Letters
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2025
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IF 5.8
Hu Chaoshuai,Liu Yuanxin,Zhang Jian,Zhu Yaming,Yin Xitao,Zhao Xuefei
Using durian shell as a carbon source and triethanolamine as a nitrogen dopant, nitrogen-doped carbon dots (N-CDs) were prepared via the hydrothermal method. First, by exploring different reaction times, reaction temperatures, and carbon source/dopant ratios to synthesize nitrogen-doped carbon dots, it is concluded that the best process conditions are 200 ℃, reaction time being 15h, and the dopant addition amount being 2mL. Structure and characteristics of the synthesized CDs were analyzed using X-ray photoelectron spectroscopy, Fourier-transform infrared, fluorescence (FL), ultraviolet–visible absorption, and Raman spectra. The N-CDs showed blue FL with a quantum efficiency of 4.28%. The FL characteristics of the N-CDs were utilized for ion detection, which demonstrated that \({\text{MnO}}_{4}^{ - }\) and \({\text{Cr}}_{{2}} {\text{O}}_{7}^{2 - }\) ions caused distinct FL quenching through static quenching, while other ions had no significant quenching effect. The detection limits for \({\text{MnO}}_{4}^{ - }\) and \({\text{Cr}}_{{2}} {\text{O}}_{7}^{2 - }\) were 37.5 and 46.2 nM, respectively. The N-CDs were subsequently employed to detect these ions in actual water samples, producing satisfactory results. Therefore, the preparation of N-CDs using durian shell as raw material and its application in practical detection work have good application feedback, which not only provides a new way for the reuse of fruit and vegetable wastes but also provides a new detection means for environmental monitoring pollutants.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
Materials Today Energy
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2021
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IF 7.311
C. Liu,X. Chi,J. Huang,Y. Liu
Development of rechargeable alkaline Zn–Mn batteries has been facing big challenges for low working voltage and poor cycling stability, although they have advantages of low cost, high safety, and simple maintenance. For the first time, this work demonstrates a record high voltage (1.78 V) for rechargeable alkaline Zn–MnO 4 − battery achieved by a high reversible redox pair of MnO 4 − /MnO 4 2− , which shows excellent cycling stability up to 1,500 cycles at a high current density of 20 mA cm −2 without obvious capacity attenuation. The MnO 4 − /MnO 4 2− redox reaction investigated by ex-situ scanning electron microscope as well as ultraviolet and visible absorption spectrum indicates high reversibility of the MnO 4 − /MnO 4 2− redox couple after the activation during the first discharge process. Furthermore, benefiting from the liquid-phase reaction nature of MnO 4 − /MnO 4 2− , a flow battery is further prototyped to show highly stable cycles with 95.8% of discharge capacity retention for 600 cycles at the current density of 40 mA cm −2 .
研究领域:
电化学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2021
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IF 3.498
Han Zhang,Guan-Yu Ding,Afifa Yousaf,Li Chen,Xin-Long Wang,Guo-Gang Shan,Chun-Yi Sun,Zhong-Min Su
Luminescent sensors have received extensive attention due to their fast-response and easy-operation and when integrating multifunctions in a sensor, the cost will be reduced substantially. Covalent organic polymers (COPs) as multifunctional luminescent sensor with outstanding performance are still underexplored. In this work, a typical COP named as COP-2 show preponderant performance in the detection of Fe 3+ , MnO 4 − , and TNP. COP-2 has the highly efficient ability to selectively detect Fe 3+ among the other metal ions , and the limit of the detection (LOD) is 0.89 μ M, which outperforms the reported covalent organic materials. Anion sensing shows the COP-2 has the highly anti-interference ability and recyclicity to detect MnO 4 − . Explosive analogs sensing demonstrates that COP-2 owns the superior ability in sensing TNP in the knockdown concentration with 0.0067 ppm LOD, which superior to the values in the reported literature. In addition to the above superb sensing performance, COP-2 can be utilized as a white light-emitting diode (WLED) when combined with the commercial blue emission LED and presents a Commission Internationale de l’Eclairage (CIE) coordinate of (0.31, 0.32). These results show the COP-2 not only has an appealing performance in multifunctional luminescent sensing application, but also has a possible application in white light emitting.
研究领域:
材料科学
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化学传感
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光学器件
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DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2024
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IF 4.3
Maoxia Ran,Haiyan Qi,Tao Jing,Jun Li,Wenbo Li,Jiayu Zhang,Chao Luo,Xiaochen Zhu,Yang Gao
Herein, high-efficiency green fluorescence nitrogen doped CDs (G-CDs) were prepared using acetaminophen and ethylenediamine as precursors. The G-CDs exhibited good anti-photobleaching, salt tolerance and low cytotoxicity. Interestingly, the G-CDs revealed excellent fluorescence stability in the pH range of 6–12, however, the intensity of the G-CDs was almost completely quenched in other pH values. The MnO 4 − demonstrated strong fluorescence quenching capability on our G-CDs with the mechanism involving dynamic quenching caused by energy transfer. G-CDs exhibited a strong linear relationship with MnO 4 − concentration in the range of 0–75 μmol/L, with a low limit detection of 7.6 nmol/L. What was even more interesting was that the G-CDs displayed bright green solid-state fluorescence, and exhibited potential application in anti-counterfeiting.
研究领域:
分析化学
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材料科学
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生物医学
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产品关联
DOI
PubMed
高影响因子
OPTICAL MATERIALS
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2024
·
IF 3.8
Jie Yang,Huimin Du,Yue Deng,Meifang Liu,Xingzuo Liu,Jun Yang,Shanshan Hu
Quantitative detection of permanganate ( MnO 4 ‐ ) and 4-nitrophenol (4-NP) is essential for environmental safety. Fluorescence detection technology is one of the most widely used detection technologies, which can be used for the detection of various anions and organic pollutants. In this paper, Ba 4 Lu 3 F 17 :Tb 3+ phosphors were successfully obtained by hydrothermal method. The morphology transition of Ba 4 Lu 3 F 17 crystal from nanoparticles through octahedron to hexagonal prism was realized in the pH range of 3–11. The best luminescent samples were obtained by changing the type of additives and the doping concentration of Tb 3+ ions. The obtained Ba 4 Lu 3 F 17 :Tb 3+ has high selectivity and anti-interference for MnO 4 ‐ and 4-NP detection, with the detection limits being 0.79 μM and 1.28 μM, respectively.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
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2026
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IF 5.2
Cheng Qian,Guocheng Zhou,Zhonglong Wang,Yuqian Liu,Yiqin Yang
Systematically clarifies how lignin molecular weight and sulfonation regulate CQDs fluorescence properties. • Develops green NSCDs from renewable sulfonated lignin, reducing the cost and environmental impact of CQDs. • Prepared NSCDs show high performance with 21.54% QY, 0.11 μM MnO₄⁻ LOD, and <1 min response time. • Confirms MnO₄ − fluorescence quenching is static quenching via chelation, excluding redox and energy transfer. • NSCDs sensor enables trace MnO₄ − detection in real water and promotes high-value utilization of lignin waste. Exploring a sensitive and accurate method for environmental permanganate detection is significant because of its great biotoxicity. Herein, various carbon quantum dots (CQDs) and the optimized N,S co-doped carbon quantum dots ( NSCDs ) fabricated from the hydrothermal treatment of sulfonated lignin could be used as fluorescent sensors for aqueous MnO 4 − detection. During the synthetic optimization process, compared with the positive effects of sulfonation degree increase of the sulfonated lignin and the proportion of 5-C sulfonation sites on the fluorescence intensity of CQDs, it was found that the increase of lignin molecular weight had the most significant effect on fluorescence intensity. The optimized NSCDs ( NSCDs , N from ethylenediamine, S from sulfonated lignin), with a 1.88 ± 0.37 nm particle size and Stokes shift as large as 245 nm, could emit green fluorescence under UV irradiation with a 21.54 ± 1.93% quantum yield and provide a low detection (LOD) limit of 0.11 μM for the MnO 4 − in an aqueous media with a rapid response within 1 min and good recoveries, showing good agreement with the indirect iodometric method in real water samples. Mechanistic studies suggested that the fluorescence quenching of NSCDs by MnO 4 − is predominantly a static process, likely associated with ground-state interaction between MnO 4 − and the surface functional groups of NSCDs . This work highlights precursor-structure regulation of sulfonated lignin as a distinct route for designing lignin-derived CQD sensors. Download: Download high-res image (117KB) Download: Download full-size image
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DOI
高影响因子
MACROMOLECULAR RAPID COMMUNICATIONS
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2022
·Vol. 43
·期 15
·2200170
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IF 5.006
Chenxiang Ai,Juntao Tang,Qingqing Zhang,Xincun Tang,Shaofei Wu,Chunyue Pan,Guipeng Yu,Jiayin Yuan
Although considerable efforts have been devoted to novel ionic porous networks (IPNs), the development of them in a scalable manner to tackle the issues in pollutant treatment by adsorption remains an imminent challenge. Herein, inspired by natural spider webs, a knitting copolymerization strategy is proposed to construct analogue triazolium salt-based porous networks (IPN-CSUs). It is not only convenient to incorporate the cationic motifs into the network, but easy to control over the contents of ionic pairs. The as-prepared IPN-CSUs displays a high surface area of 924 m 2 g −1 , a large pore volume of 1.27 cm 3 g −1 and abundant ionic sites, thereby exhibiting fast adsorption rate and high adsorption capacity towards organic and inorganic pollutants. The kinetics and thermodynamics study reveal that the adsorption followed a pseudo-second-order kinetic model and Langmuir isotherm model correspondingly. Specifically, the maximum adsorption capacity of the IPN-CSUs is as high as 1.82 mg mg − 1 for permanganate ions and up to 0.54 mg mg −1 for methyl orange, which stands out among the previously reported porous adsorbents so far. It is expected that the strategy reported herein can be extended to the development of other potential efficient adsorbents in water purifications.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
CRYSTENGCOMM
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2018
·Vol. 20
·期 38
·5822-5832
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IF 3.304
Shu-Li Yao,Teng-Fei Zheng,Xue-Mei Tian,Sui-Jun Liu,Chen Cao,Ze-Hao Zhu,Yong-Qiang Chen,Jing-Lin Chen,He-Rui Wen
Six new coordination polymers (CPs) based on the V-shaped 1,3-bis(benzimidazolyl)benzene (bbib) have been synthesized under solvothermal conditions: [Zn(bbib)(ip)]n (1), {[Zn(bbib)(oba)]·solvents}n (2), {[Zn(bbib)(tp)]·DMF}n (3), [Cd(bbib)(ip)]n (4), {[Cd(bbib)(oba)]·H2O·solvents}n (5) and {[Cd(bbib)(tp)]·DMF}n (6) (ip = isophthalate, oba = 4,4′-oxybisbenzoate and tp = terephthalate). Complexes 1–3 display a plane minimal net, (4,4) sheet and a hexagonal plane net, respectively. The structures of 4–6 range from a 1D zigzag chain (4), 2D (4,4) sheet (5) to a 3D “pillar-layer” coordination framework with pcu α-Po topology (6). The structural transition from 1D to 3D among these complexes is realized with the aid of different auxiliary ligands. The results demonstrate that the conformations and coordination modes of dicarboxylate ligands make an impact on the structural diversity of ZnII/CdII coordination polymers. To the best of our knowledge, the CPs based on the bbib ligand have been successfully prepared for the first time. Moreover, complex 2 is a good bifunctional chemosensor for the detection of both Fe3+ and MnO4− with the detection limits of 3.31 ppm and 8.81 ppm, respectively, indicating that 2 could be used as an efficient fluorescent sensor with high sensitivity and selectivity for Fe3+ and MnO4−.
研究领域:
无机化学
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材料科学
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分析化学
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DOI
高影响因子
CHEMICAL PAPERS
·
2025
·
IF 2.5
Jing Xuejiao,Song Li,Wu Changxin
Developing carbon dots as a fluorescent probe specifically for detecting residual permanganate ion (MnO 4 − ion) in water is crucial for effective environmental water quality monitoring. In this study, nitrogen-doped carbon dots (N-CDs) were successfully synthesized using purslane as a green precursor and ortho-phenylenediamine (OPD) as a nitrogen source via a simple one-step hydrothermal method. These N-CDs exhibited a maximum emission wavelength of 486 nm when excited at 358 nm. They demonstrated significant antioxidative properties in various concentrations of H 2 O 2 and showed high photostability and resistance to photobleaching under different pH, ionic strength, and UV irradiation conditions. Furthermore, the N-CDs were validated as highly selective and sensitive fluorescence sensors for MnO 4 − ion, demonstrating a linear relationship within the concentration range of 0.5–168 uM with a detection limit of 41.8 nM. The sensor successfully detected MnO 4 − ion in spiked tap and river waters, achieving satisfactory recovery.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Yipeng Yang,Chao Wang,Jiuyang Lin,Liqin Zhong,Yinhua Wan,Xuewei Li
Efficient removal of trace thallium (Tl) from rare-earth mine tailwater remains challenging because conventional precipitation and monofunctional adsorption often provide insufficient purification and may cause secondary metal release. Herein, a permanganate-intercalated Mg Al layered double hydroxide (LDH-MnO 4 ) was synthesized via a calcination-reconstruction strategy. The material reached removal equilibrium within 30 min and exhibited a Langmuir-derived maximum Tl uptake capacity of 426.99 mg/g. The combined XPS, XRD, TEM, Raman, and Mn K-edge XAFS analyses indicated a removal mechanism that was dominated by interlayer-confined oxidation-precipitation and supplemented by surface complexation. Interlayer MnO 4 − promoted Tl(I) oxidation to Tl(III) and was converted into lower-valence MnO x species. LDH-MnO 4 maintained high Tl(I) removal efficiency over pH 5–7 and achieved 99.59% removal from actual rare-earth mine tailwater containing 6.87 μg/L Tl at a dosage of 50 mg/L. Meanwhile, the dissolved Mn concentration showed a net decrease from 3.60 to 0.35 mg/L under the tested tailwater conditions. The preliminary direct-reagent cost was estimated at 1.51 CNY/m 3 under the tested conditions, supporting further evaluation of LDH-MnO 4 for trace Tl removal from rare-earth mine tailwater.
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DOI
高影响因子
危险品化学品经营许可证（带存储）