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学者姓名：吕海霞
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Abstract ：
稀土上转换纳米粒子(UCNPs)因其具有毒性小、化学稳定性好和背景荧光低等优点被用于构建荧光纳米传感器.通过溶剂热法制备核壳UCNPs,采用柠檬酸钠对其进行表面配体交换得到水溶性核壳UCNPs(Cit-CS-UCNPs),以Cit-CS-UCNPs作为荧光传感器的能量供体,二氧化锰(MnO2)纳米片作为荧光传感器的能量受体,采用荧光共振能量转移(FRET)机理,构建了一种用于食品添加剂二氧化氢(H2O2)和叔丁基对苯二酚(TBHQ)检测的荧光纳米传感器(Cit-CS-UCNPs-MnO2).通过扫描电镜(SEM)、荧光光谱和紫外可见吸收光谱(UV-Vis)等分析测试手段对制备的纳米材料的形貌结构和性能进行表征.考察了猝灭剂浓度、孵育温度及孵育时间等实验条件对荧光传感体系检测性能的影响.荧光光谱和UV-Vis实验结果表明,Cit-CS-UCNPs最大发射峰位于654 nm,Cit-CS-UCNPs与MnO2结合后,核壳UCNPs发生荧光猝灭,当存在H2O2时,Cit-CS-UCNPs的荧光恢复,说明在此波段H2O2与MnO2纳米片发生氧化还原反应,MnO2纳米片被还原成Mn2+,逐渐从Cit-CS-UCNPs的表面解离下来;存在TBHQ时,Cit-CS-UCNPs-MnO2与TBHQ体系峰位与TBHQ偏移到253 nm,为TBHQ与MnO2纳米片发生氧化还原反应,使得Cit-CS-UCNPs-MnO2体系中FRET效应减弱,荧光强度回升.SEM结果表明,MnO2纳米片均匀包覆在Cit-CS-UCNPs的周围,在水中仍可保持良好的分散性,表明MnO2纳米片修饰到Cit-CS-UCNPs表面.对猝灭剂高锰酸钾(KMnO4)的浓度进行了优化.结果表明,当KMnO4浓度为10 mol·L-1时,猝灭效率可达90％.对检测条件进行优化,结果表明H2O2的检测孵育时间为25 min时,MnO2和H2O2之间氧化还原反应基本完全,Cit-CS-UCNPs-MnO2荧光恢复值最大;TBHQ的检测孵育时间为30 min.在最佳实验条件下,Cit-CS-UCNPs-MnO2 的荧光强度变化比率与 H2O2 浓度(0～1 000 μmol·L-1)及 TBHQ 浓度(0～0.6 mmol·L-1)分别具有良好的线性关系.保持最佳实验条件,选取食品中存在的代表性金属离子(如K+、Na+、Ca2+和Mg2+)和常见的食品添加剂苯甲酸(BA)、D-葡萄糖(Glu)、山梨酸钾(PS)、蔗糖(Suc)、纳他霉素(Nat)和肌醇(Ino)作为研究对象进行选择性测试,发现与H2O2相比,Cit-CS-UCNPs-MnO2对其他添加物质没有强烈的反应,传感器整体荧光信号波动不大,因此Cit-CS-UCNPs-MnO2对H2O2和TBHQ可进行特异性检测.
Keyword ：
上转换纳米粒子 上转换纳米粒子 核壳结构 核壳结构 荧光纳米传感器 荧光纳米传感器
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| GB/T 7714 | 张璇 , 王雅森 , 温娜 et al. 基于稀土上转换纳米粒子传感器的构建及其在食品添加剂检测中的应用 [J]. | 光谱学与光谱分析 , 2024 , 44 (9) : 2459-2466 . |
| MLA | 张璇 et al. "基于稀土上转换纳米粒子传感器的构建及其在食品添加剂检测中的应用" . | 光谱学与光谱分析 44 . 9 (2024) : 2459-2466 . |
| APA | 张璇 , 王雅森 , 温娜 , 吕海霞 , 李宝铭 . 基于稀土上转换纳米粒子传感器的构建及其在食品添加剂检测中的应用 . | 光谱学与光谱分析 , 2024 , 44 (9) , 2459-2466 . |
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The photocatalytic degradation of dyes by graphitic carbon nitrides (g-C3N4) under sunlight has received increased attention. However, the fast recombination of charge carriers still restricts its photocatalytic application. To overcome this drawback, a g-C3N4/Mn3O4/ZIF-8 (CMZ) composite was prepared to activate peroxymonosulfate (PMS)-based advanced oxidation processes for degradation of rhodamine B (RhB) in water. Under visible light, the catalysts exhibited high activity and stability in activating PMS to generate radicals ((OH)-O-center dot, O-center dot(2)- and SO4 center dot-) and the maximum RhB degradation of approximately 94.34 % was achieved. The RhB degradation followed first-order kinetics and the rate constant of g-C3N4/Mn3O4/ZIF-8/PMS system was 2.85, 3.09, 9.82 and 17 times of g-C3N4, Mn3O4, ZIF-8 and PMS, respectively. Moreover, the synergistic effect of CMZ and PMS on the removal efficiencies of total organic carbon (TOC) for RhB and wastewater were 92.84 % and 96.13 %, respectively. After five cycles of use, the degradation rate of the prepared catalyst for RhB only decreased by 1.7 %. This work provided new insights that the synergistic effect of advanced oxidation technologies and photocatalysis holds broad prospects for the photodegradation of RhB.
Keyword ：
g-C3N4 g-C3N4 Mn3O4 Mn3O4 Peroxymonosulfate Peroxymonosulfate Rhodamine B (RhB) Rhodamine B (RhB) ZIF-8 ZIF-8
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| GB/T 7714 | Li, Yangqing , Zhang, Xiaofeng , Huang, Chengke et al. A g-C3N4/Mn3O4/ZIF-8 composite for efficient degradation of dyes by activating peroxymonosulfate [J]. | OPTICAL MATERIALS , 2024 , 149 . |
| MLA | Li, Yangqing et al. "A g-C3N4/Mn3O4/ZIF-8 composite for efficient degradation of dyes by activating peroxymonosulfate" . | OPTICAL MATERIALS 149 (2024) . |
| APA | Li, Yangqing , Zhang, Xiaofeng , Huang, Chengke , Lyu, Haixia . A g-C3N4/Mn3O4/ZIF-8 composite for efficient degradation of dyes by activating peroxymonosulfate . | OPTICAL MATERIALS , 2024 , 149 . |
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Heparin is a highly negatively charged sulfated linear polymer glycosaminoglycan that has been widely used as an anticoagulant in medicine. Protamine is a cationic protein rich in arginine that is used to treat the blood-brain barrier during excess heparin surgery. Trypsin is the most important digestive enzyme-encoding generated by the pancreas and can specifically cleave the carboxyl ends of arginine and lysine residues. Heparin, protamine, and trypsin interact and constrain each other, and their fluctuations reflect the body's dysfunction. Therefore, it is necessary to develop a fast, sensitive, and highly selective assay for regularly monitoring the levels of heparin, protamine, and trypsin in serum. Herein, a fluorescent and colorimetric dual-mode upconversion nanoparticle (UCNP) biosensor was used for the determination of heparin, protamine, and trypsin based on the oxidase-mimicking activity of Ce4+ and electrostatic control. The biosensor exhibited sensitive detection of heparin, protamine, and trypsin with low limits of detection (LODs) of 16 ng/mL, 87 ng/mL and 31 ng/mL, respectively. Furthermore, the designed biosensor could eliminate autofluorescence, which not only effectively increased the accuracy of the sensor but also provided a new sensing pathway for the detection of differently charged biotargets. © 2024 Elsevier B.V.
Keyword ：
Arginine Arginine Biosensors Biosensors Electrostatics Electrostatics Enzymes Enzymes Nanoparticles Nanoparticles Polysaccharides Polysaccharides
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| GB/T 7714 | Hu, Gaoya , Yue, Daoping , Chen, Weishuan et al. Dual-mode upconversion sensors for detecting differently charged biotargets based on the oxidase-mimicking activity of Ce4+ and electrostatic control [J]. | Talanta , 2024 , 277 . |
| MLA | Hu, Gaoya et al. "Dual-mode upconversion sensors for detecting differently charged biotargets based on the oxidase-mimicking activity of Ce4+ and electrostatic control" . | Talanta 277 (2024) . |
| APA | Hu, Gaoya , Yue, Daoping , Chen, Weishuan , Lin, Qingqing , Lyu, Haixia . Dual-mode upconversion sensors for detecting differently charged biotargets based on the oxidase-mimicking activity of Ce4+ and electrostatic control . | Talanta , 2024 , 277 . |
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To improve the photocatalytic performance of carbon nitride (g-C3N4), a flower-shaped COCN/ZIS composite was synthesized by growing ZnIn2S4 (ZIS) onto structurally defective g-C3N4 (COCN) nanosheets. The experimental results indicate that the prepared photocatalyst has excellent photocatalytic performance for the degradation of methylene blue (MB), with an apparent rate constant of 0.0661 min−1, which is approximately 6.89, 6.06 and 7.39 times greater than that of g-C3N4 (0.0096 min−1), COCN (0.01091 min−1) and ZIS (0.00895 min−1), separately. The improvement in the photocatalytic performance of COCN/ZIS can be attributed to the defect structure of COCN and the well-matched relationship between COCN and ZIS, both of which result in valid photoinduced charge separation and migration. This has also been confirmed by the synergy coefficient (3.33). Furthermore, the total organic carbon content (TOC) removal rates of MB and wastewater by the 60-COCN/ZIS composite were 85.96 % and 75.32 %, respectively, suggesting that the resultant catalyst has potential application in the photodegradation treatment of MB. Finally, the capture experiments and electron paramagnetic resonance analysis show that ·OH, ·O2– and h+ species are generated during the process, among which ·OH plays a great part in the photodegradation of MB by the COCN/ZIS compound. © 2024 Elsevier B.V.
Keyword ：
g-C3N4 g-C3N4 Photocatalytic degradation Photocatalytic degradation Structural defects Structural defects ZnIn2S4 ZnIn2S4
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| GB/T 7714 | Li, Y. , Chen, Y. , Lyu, H. et al. Construction of a flower-shaped g-C3N4/ZnIn2S4 composite with heterogeneous structural defects for highly efficient photocatalytic degradation of pollutants [J]. | Journal of Photochemistry and Photobiology A: Chemistry , 2024 , 457 . |
| MLA | Li, Y. et al. "Construction of a flower-shaped g-C3N4/ZnIn2S4 composite with heterogeneous structural defects for highly efficient photocatalytic degradation of pollutants" . | Journal of Photochemistry and Photobiology A: Chemistry 457 (2024) . |
| APA | Li, Y. , Chen, Y. , Lyu, H. , Xie, Z. . Construction of a flower-shaped g-C3N4/ZnIn2S4 composite with heterogeneous structural defects for highly efficient photocatalytic degradation of pollutants . | Journal of Photochemistry and Photobiology A: Chemistry , 2024 , 457 . |
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As the reliable biomarkers to evaluate the diabetes and neurological disease, sensitive and accurate detection of glucose and glutathione (GSH) in biological samples is necessary for early precaution and diagnosis of relateddiseases. The single red upconversion nanoparticles (UCNPs) especially with core-shell structure can penetrate deeper biological tissues and cause less energy loss and thus have higher sensitivity and accuracy. Additionally, an enzyme-controlled cascade signal amplification (ECSAm) strategy will further enhance sensitivity. Herein, using single red UCNPs with core-shell structure as the luminescent material, a fluorescent sensor based on ECSAm was developed for the highly sensitive and accurate detection of glucose and GSH. Under the optimal conditions, the limits of detection for glucose and GSH by fluorescent method were 0.03 mu M and 0.075 mu M, separately. This assay was used to analyze the content of glucose and GSH in serum samples, and the obtained data was close to that of commercial blood glucose and GSH detection kit. The developed sensor platform based on single red UCNPs with core-shell structure and ECSAm can be a promising method for the accurate and sensitive detection of glucose and GSH in biological samples.
Keyword ：
Fluorescent sensor Fluorescent sensor Glucose Glucose Glutathione Glutathione Serum Serum Single red upconversion nanoparticles Single red upconversion nanoparticles
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| GB/T 7714 | Zhao, Tianlu , Wu, Dongzhi , Zhang, Xuecheng et al. A fluorescent sensor based on single band bright red luminescent core-shell UCNPs for the high-sensitivity detection of glucose and glutathione [J]. | ANALYTICA CHIMICA ACTA , 2024 , 1295 . |
| MLA | Zhao, Tianlu et al. "A fluorescent sensor based on single band bright red luminescent core-shell UCNPs for the high-sensitivity detection of glucose and glutathione" . | ANALYTICA CHIMICA ACTA 1295 (2024) . |
| APA | Zhao, Tianlu , Wu, Dongzhi , Zhang, Xuecheng , Lyu, Haixia . A fluorescent sensor based on single band bright red luminescent core-shell UCNPs for the high-sensitivity detection of glucose and glutathione . | ANALYTICA CHIMICA ACTA , 2024 , 1295 . |
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The AgNPs@NCN composite was prepared by loading silver nanoparticles (AgNPs) onto the surface of carbon nitride (g-C3N4) with nitrogen-vacancy and cyanide defect and used for the synergistic degradation of methylene blue (MB) by the structural defect of g-C3N4, the surface plasmon resonance of AgNPs and Schottky barrier formed between them. The morphology, structure, chemical composition and photoelectrochemical properties were characterized by SEM, TEM, FTIR, XRD, XPS, BET and UV-Vis. The effects of different loads of AgNPs on photocatalytic performance were investigated and the results showed 10%AgNPs@NCN exhibited good photodegradation performance. The maximum degradation efficiency of MB by 10%AgNPs@NCN reached 100% with the rate constant of 0.05443 min-1, which was 9.15 and 6.89 times higher than those of g-C3N4 (0.00595 min-1) and NCN (0.0079 min-1), respectively. The mineralization degree of organic pollutants was evaluated by total organic carbon (TOC) and the results showed that the TOC removals of 10%AgNPs@NCN photocatalytic reaction were 77% and 93% for MB and wastewater, respectively. After four cycles of photocatalytic degradation experiments, the degradation rate of MB was still more than 98.2% and there was no significant change in the characteristic stretching of the catalyst, indicating that the prepared photocatalyst had good stability and reusability.
Keyword ：
Carbon nitride Carbon nitride Methylene blue Methylene blue Photocatalytic degradation Photocatalytic degradation Silver nanoparticles Silver nanoparticles Structural defect Structural defect
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| GB/T 7714 | Guo, Mengfan , Gao, Jun , Lyu, Haixia et al. Synergistic enhancement of photocatalytic degradation of dyes by structural defects and silver nanoparticles [J]. | DYES AND PIGMENTS , 2023 , 220 . |
| MLA | Guo, Mengfan et al. "Synergistic enhancement of photocatalytic degradation of dyes by structural defects and silver nanoparticles" . | DYES AND PIGMENTS 220 (2023) . |
| APA | Guo, Mengfan , Gao, Jun , Lyu, Haixia , Xie, Zenghong . Synergistic enhancement of photocatalytic degradation of dyes by structural defects and silver nanoparticles . | DYES AND PIGMENTS , 2023 , 220 . |
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Three dimensions (3D) flower-shaped g-C3N4/MoS2 composite was prepared by immobilizing molybdenum di-sulfide (MoS2) on carbon nitride (C3N4) with structural defects by in-situ hydrothermal assay. The morphological structure and photochemical properties of the obtained catalysts were characterized by SEM, TEM, EDS, FTIR, XRD and XPS. Using methylene blue (MB) as the target pollutant, the photocatalytic performance cyclic stability of g-C3N4/MoS2 composite were studied under simulated sunlight. The results showed that the prepared catalyst could remove 98 % of MB within 60 min and still reached 96.4 % after 5 cycles with good stability and regeneration. Its apparent rate constant was 0.0523 min-1, which was 11.5, 8.2 and 13.9 times higher than those of g-C3N4 (0.00453 min-1), C3N4 with structural defects (0.00635 min-1) and MoS2 (0.00377 min-1), indicating that the synergistic effect of structural defects, heterojunctions and 3D structure has achieved efficient degradation of MB. Furthermore, the photocatalytic mechanism of g-C3N4/MoS2 composite was proposed by combining free radical capture experiment and electron paramagnetic resonance (EPR) spectroscopy and the results showed that that center dot OH and center dot O2- played a primary role in the catalytic degradation.
Keyword ：
3D heterojunction structure 3D heterojunction structure Dye Dye g-C 3 N 4 /MoS 2 composites g-C 3 N 4 /MoS 2 composites Photocatalysis Photocatalysis
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| GB/T 7714 | Lyu, Haixia , Zhu, Wenzhang , Chen, Kaixuan et al. 3D flower-shaped g-C3N4/MoS2 composite with structure defect for synergistic degradation of dyes [J]. | JOURNAL OF WATER PROCESS ENGINEERING , 2023 , 57 . |
| MLA | Lyu, Haixia et al. "3D flower-shaped g-C3N4/MoS2 composite with structure defect for synergistic degradation of dyes" . | JOURNAL OF WATER PROCESS ENGINEERING 57 (2023) . |
| APA | Lyu, Haixia , Zhu, Wenzhang , Chen, Kaixuan , Gao, Jun , Xie, Zenghong . 3D flower-shaped g-C3N4/MoS2 composite with structure defect for synergistic degradation of dyes . | JOURNAL OF WATER PROCESS ENGINEERING , 2023 , 57 . |
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本发明公开了一种桥联环糊精/壳聚糖双功能手性整体柱的制备方法及应用，属于分析化学领域。所述整体柱通过桥联环糊精和壳聚糖双单体构建手性环境，与尿素和甲醛一锅热缩聚法在30 min内快速制备得到。本发明制备方法简单，反应快速，以桥联环糊精和壳聚糖作为手性功能单体，建立双手性选择剂“协同作用”的共功能化系统，使整体柱骨架上同时拥有双手性选择剂，提高手性中心数量和分离效果，通过电色谱实现了N‑苄氧羰基‑DL‑天冬酰胺、DL‑酪氨酸、DL‑苯丙氨酸的手性分离。
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| GB/T 7714 | 吕海霞 , 刘玥 , 曾宇 . 一种桥联环糊精/壳聚糖双功能手性整体柱的制备方法及应用 : CN202210432970.3[P]. | 2022-04-24 00:00:00 . |
| MLA | 吕海霞 et al. "一种桥联环糊精/壳聚糖双功能手性整体柱的制备方法及应用" : CN202210432970.3. | 2022-04-24 00:00:00 . |
| APA | 吕海霞 , 刘玥 , 曾宇 . 一种桥联环糊精/壳聚糖双功能手性整体柱的制备方法及应用 : CN202210432970.3. | 2022-04-24 00:00:00 . |
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本发明公开了一种基于核壳结构上转换纳米粒子检测叔丁基对苯二酚的方法，属于食品添加剂的检测技术领域。所述检测方法是先利用表面配体交换反应制备柠檬酸钠修饰核壳结构上转换纳米粒子，再通过超声作用制备二氧化锰纳米片修饰核壳结构上转换纳米粒子，最后，绘制“荧光强度变化比率‑叔丁基对苯二酚浓度”标准工作曲线，建立线性工作方程。本发明检测方法能够实现对水溶液中食品添加剂叔丁基对苯二酚的检测，且具有线性检测范围宽、检测限低、灵敏度高等优势，在食品和环境领域具有广泛的应用前景。
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| GB/T 7714 | 李宝铭 , 林莹莹 , 邢益锋 et al. 基于核壳结构上转换纳米粒子检测叔丁基对苯二酚的方法 : CN202111395473.2[P]. | 2021-11-23 00:00:00 . |
| MLA | 李宝铭 et al. "基于核壳结构上转换纳米粒子检测叔丁基对苯二酚的方法" : CN202111395473.2. | 2021-11-23 00:00:00 . |
| APA | 李宝铭 , 林莹莹 , 邢益锋 , 吕海霞 . 基于核壳结构上转换纳米粒子检测叔丁基对苯二酚的方法 : CN202111395473.2. | 2021-11-23 00:00:00 . |
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本发明公开了一种基于铜纳米簇和氧化反应的特异性亚硝酸盐荧光检测方法，属于纳米材料制备及亚硝酸盐检测技术领域。首先以谷胱甘肽为稳定剂、抗坏血酸为还原剂一锅法制得铜纳米簇，并基于氧化还原反应构建用于检测亚硝酸盐的荧光传感器。在酸性条件下，NO2−的存在能使Fe2+很容易被氧化为Fe3+，通过将Fe2+/Fe3+氧化还原过程与Fe3+对Cu NCs的荧光猝灭相结合，可以很容易地实现NO2‑的量化分析。本发明能提高亚硝酸盐检测的灵敏度和准确性，且该传感器具有较好的特异性。
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| GB/T 7714 | 吕海霞 , 范丹阳 , 宋昊天 . 一种基于铜纳米簇和氧化反应的特异性亚硝酸盐荧光检测方法 : CN202111605747.6[P]. | 2021-12-25 00:00:00 . |
| MLA | 吕海霞 et al. "一种基于铜纳米簇和氧化反应的特异性亚硝酸盐荧光检测方法" : CN202111605747.6. | 2021-12-25 00:00:00 . |
| APA | 吕海霞 , 范丹阳 , 宋昊天 . 一种基于铜纳米簇和氧化反应的特异性亚硝酸盐荧光检测方法 : CN202111605747.6. | 2021-12-25 00:00:00 . |
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