CHEMOSPHERE
·
2022
·
IF 8.943
Haiqing Wang,Zhenda Liang,Chao Liu,Lishan Zhu,Yongtao Xu,Li Zhou,Bing Yan
Developing low-cost and efficient materials for dye pollutant removal under mild condition remains a great challenge. Here K + and Tb 3+ co-doped porous MnO 2 (K–Tb–MnO 2 ) nanoparticles with tailored properties including crystal structure, surface area and catalytic activity have been synthesized. Experimental results reveal that K–Tb–MnO 2 nanoparticle has higher specific surface area, Mn 3+ content and surface oxygen vacancies than pristine MnO 2 nanoparticle and single-doped MnO 2 materials, showing the uniqueness of dual-doped metal ions . Using methyl blue (MB) as a model pollutant, its removal efficiency by K–Tb–MnO 2 nanoparticles within 5 min is 93.6%, which is 18, 8.3, and 2.9 times higher than that of MnO 2 , K–MnO 2 , and Tb–MnO 2 nanomaterials, respectively. Oxalic acid triggered MnO 2 material dissolving assay and FT-IR spectrum suggested that remarkable performance of K–Tb–MnO 2 nanoparticle toward MB removal can be attributed to a combined effect of adsorption (16% MB removal) and catalytic degradation (84% MB removal). Moreover, K–Tb–MnO 2 nanoparticle mediated MB degradation is demonstrated to be a combination of non-radical oxidation by Mn 3+ and radical-participated degradation, with 1 O 2 as the main species. And the intermediates and pathways of MB degradation were studied by liquid chromatography-mass spectrometry. Importantly, cell viability experiment suggests that the toxicity of MB dye could be efficiently alleviated after the treatment with K–Tb–MnO 2 nanoparticle. These results demonstrate the great potential of the novel K–Tb–MnO 2 particles to be used as a highly effective nanomaterials to reduce the risk of dye wastes toward the environment and human health.
研究领域:
环境科学
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材料科学
·
生物学
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DOI
PubMed
高影响因子
Foods
·
2026
·Vol. 15
·期 5
·829
·
IF 6
Jinqiong Xu,Xinyu Yu,Jianbo Liu,Qinglin Sheng
Pseudomonas aeruginosais an important waterborne pathogen that is harmful to food safety and human health. Therefore, the detection ofPseudomonas aeruginosahas become an essential item in food sampling. This article constructs a fluorescent aptamer sensor based on Tb-MOFs, using Tb-MOFs as the fluorescence signal source, colloidal gold (AuNPs) as the signal conversion switch, and aptamers as the target recognition element, to establish a quantitative detection method forPseudomonas aeruginosa. The constructed sensor exhibits a good linear relationship within the concentration range ofPseudomonas aeruginosafrom 1 to 106CFU/mL, with a detection limit of 0.63 CFU/mL. Moreover, the sensor was also applied to the detection ofPseudomonas aeruginosain actual samples of bottled drinking water and orange juice. The fluorescent aptasensor based on Tb-MOFs provides a rapid and sensitive new sensing method for the detection ofPseudomonas aeruginosain food.
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PubMed
高影响因子
INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Hui Cao,Lin Chen,Zixia Huang,Xiner Ding,Yiyuan Liu,Jinsong Yu,Fei Xu
Lanthanide-based metal–organic frameworks (Ln-MOFs) have received wide attention as luminescent sensors due to their outstanding porosity and optical properties. However, the poor selectivity and instability of Ln-MOFs in a water environment limit their application in a complex sample matrix. To address this issue, a luminescent Tb–H4btc-Asp@IIP was developed through amino acid functionalization via a coordinative postsynthetic method (CPSM) combined with surface imprinting strategies. The synthesized Tb–H4btc-Asp@IIP retained 90.2% of its original fluorescence intensity after 30 days in aqueous environments and exhibited high thermal stability up to 286 °C. This improved stability was primarily attributed to a protective ion-imprinted polymer (IIP) layer measuring 90 nm in thickness. Additionally, Tb–H4btc-Asp@IIP exhibited excellent selectivity for Pb(II), benefiting from the dual recognition capabilities of the Asp functional groups and the imprinted cavity for Pb(II). The Tb–H4btc-Asp@IIP sensor effectively detected Pb(II) concentrations ranging from 5 to 300 ng/mL, achieving a low detection limit of 3.19 ng/mL. In vegetable samples, the sensor was able to quickly detect Pb(II) levels, with the average recovery ranging from 82.4 to 109.2% and RSD values of 2.0%–4.8%. The photoinduced electron-transfer (PET) effect and dynamic quenching process contributed to the sensing process of Tb–H4btc-Asp@IIP.
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PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Tao Wang,Jian Zou,Jun Yang
The optical properties of colored cool pigments including their color and solar reflectance are predominantly governed by chemical defects.In this study, a series of yellow cool pigments SrCe 1-x Tb x O 3 (x = 0–0.3) and SrCe 0.7-x Tb 0.3 Y x O 3 (x = 0–0.1) were synthesized via the solid-state reaction based on defect engineering. The effects of chemical defects on their optical performance were systematically investigated. Tb doping extends the absorption edge of the pigments to the visible region beyond 500 nm, thereby imparting a distinct yellow hue to the pigment. However this doping process simultaneously introduces oxygen vacancy defects and facilitates the coexistence of mixed-valence cations (Ce 4+ /Ce 3+ and Tb 4+ /Tb 3+ ) within the host lattice. This results in pronounced tail absorption that compromises both color properties and solar reflectance. To address this issue, yttrium was introduced as a co-dopant following the charge compensation principle which effectively suppressed defect formation and reduced tail absorption intensity. This co-doping strategy successfully achieved a synergistic optimization of pigment color and solar reflectance. The optimized pigments exhibited a high b* value of 75 and an exceptional near-infrared reflectance of95.33 %. The simulation experiment revealed that coating based on the as-prepared pigment exhibited an internal surface temperature reduction of 15.5 °C compared to the conventional cement coating. These findings underscore that optimizing color and solar reflectance through chemical defect regulation represents a feasible approach for preparing high-performance colored cool pigments.
研究领域:
材料科学
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光学性能
·
固态化学
·
陶瓷颜料
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节能涂层
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DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Minqiao Feng,Chengyan Yin,Hailiang Qin,Wei Liu,Yunqi Wang,Ruth Antwi-Baah,Yao Rao,Shuxia Xu
Terminal deoxynucleotidyl transferase (TdT) is actively expressed in leukemia patients and plays an important role in maintaining the genetic diversity of an organism. Therefore, developing simple and sensitive analytical methods for the accurate detection of TdT in serum is of significant importance. Herein, an electrochemical biosensor based on a toluidine blue (TB)-loading mesoporous silica nanoparticles (MSN) was established for the detection of TdT in serum. First, MSN with amino group was synthesized and subsequently was carbonylated to obtain carboxyl-functionalized MSN (MSN-COOH), which was used to load TB. Thereafter, MSN-COOH was sealed with the substrate strand S(rA)-NH 2 of the Mg 2+ -dependent DNAzyme to form S(rA)-NH 2 /TB/MSN-COOH. In the presence of TdT, it can add deoxyadenosine triphosphate (dATP) to the 3’-OH end of Enc-5 A, activating its cleavage activity on the substrate chain S(rA)-NH 2 , thus releasing TB encapsulated in MSN-COOH. By measuring the change in the electrochemical signal of TB, the TdT concentration can be determined. The linear range is from 5 to 400 U/mL and the limit of detection (LOD) is 0.369 U/mL (3 σ/K). Since DNAzyme can be extended by TdT without the need of a template, the proposed biosensor demonstrates excellent selectivity towards TdT in the presence of other DNAzyme, such as T4 DNA ligase, phi29 DNA polymerase, DreamTaq DNA polymerase, and Klenow fragment ( exo -). Furthermore, the proposed biosensor was successfully applied to the detection of TdT in serum with the recovery rates ranged from 91.0 % to 94.7 %, indicating its potential for early detection of leukemia and other related diseases.
研究领域:
生物分析化学
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生物传感器
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分子诊断
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纳米生物技术
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肿瘤学
·
临床化学
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DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2018
·
IF 5.158
Jun Ye,Mingming Zhang,Jian Xiong
A novel, rapid, high selective and sensitive probe, carboxymethyl cellulose (CMC)/Tb(III) with green fluorescence, for detecting Mn 2+ in aqueous solution during pH = 4–10 was proposed in this work. The probe’s synthesis had benefits of mild reaction condition, organic solvent-free and facile operation. A linear relationship between the fluorescence intensity of CMC/Tb(III) probe at 544 nm with 0.046 μM detection limitation and the concentration of Mn 2+ in the range of 0.1–100 μM was obtained. The probe was also used to detected Mn 2+ in tap water and the recoveries were between 97.10% and 101.61%, and the relative standard deviations (RSD, n = 5) of all samples were less than 2.04%. The results by UV absorption spectrum and fluorescence quenching suggested that there might be a dynamic quenching occurred to the fluorescence of CMC/Tb(III) probe when Mn 2+ was involved.
研究领域:
分析化学
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环境科学
·
材料科学
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产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Jinjian Wei,Mengxin Liu,Xinan Shi,Daocheng Pan
NaYF4:Ce3+,Tb3+ down-conversion nanoparticles with a photoluminescence quantum yield (PLQY) of 54.8% are synthesized by using a ligand-assisted coprecipitation method in this study. The reaction is completed within 1 min at room temperature, and short-chain hexanoic acid and hexylamine serve as the binary ligands, which enable us to synthesize highly luminescent NaYF4:Ce3+,Tb3+ nanoparticles at room temperature. X-ray diffraction (XRD) and transmission electron microscopy (TEM) are used to characterize the as-prepared nanocrystals. The results reveal that the NaYF4:Ce3+,Tb3+ nanocrystals exhibit excellent dispersion and have a particle size of 2.7 nm. Our NaYF4:Ce3+,Tb3+ nanocrystals possess the advantages of room-temperature preparation, high PLQY, and ultrasmall particle size. These results reveal that the NaYF4:Ce3+,Tb3+ nanocrystals might have a high potential in the applications of lighting, display devices, and bioimaging.
研究领域:
材料科学
·
光学
·
生物成像
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DOI
PubMed
高影响因子
MACROMOLECULAR CHEMISTRY AND PHYSICS
·
2018
·Vol. 219
·期 24
·1800403
·
IF 2.492
Chunyan Zhang,Jianxin Luo,Wenjun Li,Lijuan Ou,Guipeng Yu,Chunyue Pan
An environment-friendly synthesis of a covalently bonded terbium(Tb)-complex-containing monodispersed fluorescent porous copolymer microspheres, and their highly selective detection of Fe 3+ are described. The as-made copolymer microspheres exhibit intense green fluorescence originating from Tb ions and high photostability in water. Encouragingly, the fluorescence of the copolymer microspheres can be selectively quenched by trace Fe 3+ due to the interaction between Fe 3+ and the ligands, which disturbs the coordination structure of Tb-complexes and inhibits the energy transfer from ligands to Tb ions. The intense fluorescence intensity, high fluorescence stability, together with the nanoscale and porous nature of the copolymer microsphere endows them with wide detection range (0–1500 µ m ) and low detection limit (2.1 µ m ) for selective recognition of Fe 3+ in aqueous environment. This study paves a new pathway for the function of porous copolymer microspheres being used as targeting for biological detection and environmental issues.
研究领域:
材料科学
·
环境科学
·
分析化学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Hang Zhang,Hang Yang,Guogang Li,Shiqi Liu,Haoran Li,Yuming Gong,Yujun Liang,Yongjun Chen
Currently, phosphor materials play an important role in designing noncontact remote optical thermometers. Although many approaches have contributed to improve thermometric performance of optical thermometers including optimization of host materials, size of nanoparticles , dopant type and concentration as well as excitation density and phonon energy engineering, the development of highly sensitive optical thermometric materials is still a challenge. Hence, we developed novel CaNb 2 O 6 (CNO):Ln 3+ (Ln 3+ = Eu 3+ /Sm 3+ /Dy 3+ /Tb 3+ ) phosphors as highly thermometric materials and proposed a novel strategy for further enhancing its thermometric performance via adding the intensity of indicator signal by co-doping Bi 3+ ions in current phosphor system. Typically, the as-prepared CNO:Ln 3+ phosphors present a broad blue emission around 470 nm originated from NbO 6 octahedral groups and some respective emission lines derived from the characteristic f-f transitions of Ln 3+ ions. Based on the diverse thermal quenching performance between blue emission and Ln 3+ ions emission , the temperature sensitivities of CNO:Ln 3+ were investigated in detail. Among them, the maximum relative sensitivity of CNO:Eu 3+ sample reached 1.991% K −1 in the range of 298–448 K and remained 97% after five temperature cycles. Furthermore, an obvious discoloration was discovered during temperature cycle testing in CNO:Ln 3+ samples under 254 nm UV lamp. Through doping Bi 3+ ion, the strongest intensity of indicator signal is 24 folds that of CNO host. Correspondingly, the relative sensitivity of CNO:Bi 3+ , Eu 3+ sample is obviously improved to 3.793% K −1 in the range of 298–523 K, owing to a larger range of the FIR value and a wider drop range of indicator signal. This work opens up an effective pathway to improving thermometric performance of optical thermometers by enhancing the intensity of indicator signal of employed phosphor materials.
研究领域:
材料科学
·
光学工程
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高影响因子
RSC Advances
·
2022
·Vol. 12
·期 18
·11534-11542
·
IF 4.036
Bohan Wang,Zhihao Wang,Peng Mao,Yu Wang
Conventional luminescent materials generally exhibit uni-color and transient emission under UV excitation, which makes them mediocre in the field of anti-counterfeiting. The high-level anti-counterfeiting techniques are always becoming more complicated and in need of multi-color and persistent luminescent materials. Herein, we report a series of β-NaYF4:RE3+ (RE = Sm, Tb, Dy, Pr) persistent luminescent phosphors with multi-color emitting and ultra-long persistent luminescence under the irradiation of X-rays. The effects of doping concentrations of RE3+ on the size, morphology, radioluminescence and afterglow performance of the products are investigated in detail. Hexagonal structured rod-like β-NaYF4:Tb3+ crystals show super strong X-ray response and the afterglow signal lasts for up to seven days after X-rays are turned off. Upon X-rays irradiation, some of the F− ions are expected to escape from the crystal lattice by elastic collisions, leading to the generation of Frenkel defects: the F vacancies and interstitials , which capture electrons and release them slowly to achieve different afterglow emission times. Taking advantages of the extraordinary radioluminescence performance of the β-NaYF4:RE3+ persistent luminescent phosphors, the dynamic anti-counterfeiting patterns that containing rich time-resolved information were successfully designed.
研究领域:
材料科学
·
光学
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DOI
PubMed
高影响因子
Analytical Methods
·
2023
·Vol. 15
·期 16
·1953-1958
·
IF 3.1
Piaotong Liu,Rusi Hao,Wenliang Sun,Junhui Li
As an important trace element in the human body, the concentration of Cu2+ has an important impact on the environment and human health, and its quantitative determination is of great significance in the fields of environmental protection and food safety. Here, a ratiometric fluorescent probe based on Tb(III)-functionalized UiO-66-type MOFs has been synthesized via a facile post-synthetic modification method by employing mixed linkers containing terephthalic acid and 2,6-pyridinedicarboxylic acid for Cu2+ detection. The blue fluorescence intensity at 440 nm from the ligands of MOFs does not change much with increasing Cu2+ concentrations and can be used as a reference signal, while the green fluorescence of Tb3+ can be rapidly and selectively quenched, causing fluorescence intensity at 547 nm to decrease. The probe can be used as a ratiometric sensor for Cu2+ detection with a good linear response and low detection limit. The use of the probe for the determination of Cu2+ in real water samples and drinks shows good practicality. This method for Cu2+ detection is simple, specific and visualized to meet the needs of environmental monitoring and food analysis and provides a new strategy for the construction of new copper ion fluorescent sensors to analyze complex samples.
研究领域:
环境科学
·
分析化学
·
材料科学
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产品关联
DOI
PubMed
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2023
·Vol. 37
·期 9
·e7211
·
IF 3.9
Qian Xu,Xinyuan Guo,Chuantao Hou,Zonghua Wang
Synthesis of Ln-porphyrin aerogels with abundant porosity and novel photophysical properties for luminescent sensing and photocatalysis should have significant importance. In this paper, a multifunctional Tb-porphyrin aerogel was synthesized using agarose as a building block for ratiometric fluorescent Cu(II) sensing and photocatalytic degradation of rhodamine B. Specially, Tb-porphyrin particles were introduced into agarose aerogel to give the Tb-porphyrin aerogel with porous structure. Tb-porphyrin aerogel shows an excellent sensing performance toward Cu(II) resulting from the self-referencing mechanism and the porous structure. The fluorescent response exhibits a linear range from 1 to 200 μM ( R 2 = 0.990), and the limit of detection is 50 nM (S/N = 3). Such a ratiometric fluorescent sensor shows excellent long-term stability and selectivity. Furthermore, the Tb-porphyrin aerogel was used for photocatalytic degradation of rhodamine B, exhibiting a more efficient activity compared with the Tb-porphyrin particle. This research should open up a new avenue to develop Ln-porphyrin aerogel-based material for ratiometric fluorescent sensing and photocatalysis.
研究领域:
材料科学
·
分析化学
·
环境科学
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DOI
高影响因子
危险品化学品经营许可证（带存储）