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Simultaneous photocatalytic degradation and SERS detection of tetracycline with self-sustainable and recyclable ternary PI/TiO_(2)/Ag flexible microfibers

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Microsystems & Nanoengineering 2024年第2期10卷 101-113页

作者： donglai han Boyang Guo Yanru Li Wei Feng Keyan Liu Tianna Wu Yuchun Wan Lili Wang Ming Gao Yang Liu Lili Yang Maobin Wei Shuo Yang School of Materials Science and Engineering Changchun University of Science and Technology130022ChangchunChina College of Science Changchun University130022ChangchunChina Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education Jilin Normal University130103ChangchunChina

Facile and efficient photocatalysts using sunlight,as well as fast and sensitive surface-enhanced Raman spectroscopy(SERS)substrates,are urgently needed for practical degradation of tetracycline(TC).To meet these requirements,a new paradigm for PI/TiO_(2)/Ag organic‒inorganic ternary flexible microfibers based on semiconducting titanium dioxide(TiO_(2)),the noble metal silver(Ag)and the conjugated polymer polyimide(PI)was developed by engineering a simple *** sunlight,the photocatalytic characteristics of the PI/TiO_(2)/Ag flexible microfibers containing varying amounts of Ag quantum dots(QDs)were evaluated with photocatalytic degradation of TC in aqueous *** results demonstrated that the amount of Ag affected the photocatalytic *** the tested samples,PI/TiO_(2)/Ag-0.07(93.1%)exhibited a higher photocatalytic degradation rate than PI/TiO_(2)(25.7%),PI/TiO_(2)/Ag-0.05(77.7%),and PI/TiO_(2)/Ag-0.09(63.3%).This observation and evaluation conducted in the present work strongly indicated a charge transfer ***,the PI/TiO_(2)/Ag-0.07 flexible microfibers exhibited highly sensitive SERS detection,as demonstrated by the observation of the Raman peaks for TC even at an extremely low concentration of 10–10 moles per *** excellent photocatalytic performance and SERS detection capability of the PI/TiO_(2)/Ag flexible microfibers arose from the Schottky barrier formed between Ag and TiO_(2)and also from the outstanding plasmonic resonance and visible light absorptivity of Ag,along with immobilization by the *** successful synthesis of PI/TiO_(2)/Ag flexible microfibers holds significant promise for sensitive detection and efficient photocatalytic degradation of antibiotics.

关键词： mechanism. photocatalytic ternary

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The next decade of SET:from an oncoprotein to beyond

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Journal of Molecular Cell Biology 2024年第1期16卷 1-14页

作者： han Yao Meng Zhang donglai Wang State Key Laboratory of Common Mechanism Research for Major Diseases&Department of Medical Genetics Institute of Basic Medical Sciences&School of Basic MedicineChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100005China

This year marks the fourth decade of research into the protein SET,which was discovered in *** was initially identified as an oncoprotein but later shown to be a multifaceted protein involved in regulating numerous biological processes under both physiological and pathophysiological *** dysfunction is closely associated with diseases,such as cancer and Alzheimer's *** the increasing understanding of how SET works and how it is regulated in cells,targeting aberrant SET has emerged as a potential strategy for disease *** this review,we present a comprehensive overview of the advancements in SET studies,encompassing its biological functions,regulatory networks,clinical implications,and pharmacological ***,we provide insights into the future prospects of SET research,with a particular emphasis on its promising potential in the realm of immune modulation.

关键词： SET biological process regulatory mechanism disease therapy

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Monitoring the charge-transfer process in a Nd-doped semiconductor based on photoluminescence and SERS technology

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Light(Science & Applications) 2020年第1期9卷 883-889页

作者： Shuo Yang Jiacheng Yao Yingnan Quan Mingyue Hu Rui Su Ming Gao donglai han Jinghai Yang College of Science Changchun UniversityChangchun 130022China National Demonstration Centre for Experimental Physics Education Jilin Normal UniversitySiping 136000China Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education Jilin Normal UniversityChangchun 130012China Key Laboratory of Preparation and Application of Environmental Friendly Materials Jilin Normal UniversityMinistry of EducationChangchun 130103China School of Materials Science and Engineering Changchun University of Science and TechnologyChangchun 130022China

Surface-enhanced Raman scattering(SERS)and photoluminescence(PL)are important photoexcitation spectroscopy techniques;however,understanding how to analyze and modulate the relationship between SERS and PL is rather important for enhancing SERS,having a great effect on practical *** this work,a charge-transfer(CT)mechanism is proposed to investigate the change and relationships between SERS and *** the change in PL and SERS before and after the adsorption of the probe molecules on Nd-doped ZnO indicates that the unique optical characteristics of Nd^(3+) ions increase the SERS *** the other hand,the observed SERS can be used to explain the cause of PL background *** study demonstrates that modulating the interaction between the probe molecules and the substrate can not only enhance Raman scattering but also reduce the SERS *** work also provides a guideline for the investigation of CT as well as a new method for exploring fluorescence quenching.

关键词： SERS charge transfer

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Upgraded antisolvent engineering enables 2D@3D quasi core-shell perovskite for achieving stable and 21.6%efficiency solar cells

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Journal of Materials Science & Technology 2021年第33期92卷 21-30页

作者： Fengyou Wang Jinyue Du Yuhong Zhang Meifang Yang donglai han Lili Yang Lin Fan Yingrui Sui Yunfei Sun Jinghai Yang Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education Jilin Normal UniversityChangchun 130103China National Demonstration Center for Experimental Physics Education Jilin Normal UniversitySiping 136000China Key Laboratory of Preparation and Application of Environmental Friendly Materials Ministry of EducationJilin Normal UniversityChangchun 130103China School of Materials Science and Engineering Changchun University of Science and TechnologyChangchun 130022China

Perovskite solar cells(PSCs)have become a promising alternative to sustainable energy due to their high power conversion efficiency(PCE)and low-cost ***,the practical applications of PSCs are still limited by the trade-off between high performance and poor stability under ***,a2D@3D perovskite with quasi core-shell architecture linking the superiorities of both two-dimensional(2D)and three-dimensional(3D)perovskite is prepared through a novel upgraded antisolvent *** basic properties as well as the phase distribution and the charge transport behavior of the 2D@3D perovskite were systematically elucidated.A high PCE of 21.60%for 2D@3D PSCs is achieved due to the enhanced surface and grain boundaries passivation,improved energy level alignment and efficient holes *** 2D@3D perovskite device without encapsulation shows significantly improved stability at the room temperature(90%of initial PCE for 45 d with a relative humidity of 50%±5%)and relative thermal conditions(83%of initial PCE for 200 h under 85℃).Compared with traditional 3D PSCs,it proved that such 2D@3D perovskite configuration is an effective architecture for enhancing efficiency and improving stability and therefore will facilitate the further industrialization of PSCs.

关键词： Low-cost processing Surface and grain boundaries Two-dimensional materials Efficiency Stability

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Self-sustainable and recyclable ternary Au@Cu2O–Ag nanocomposites:application in ultrasensitive SERS detection and highly efficient photocatalysis of organic dyes under visible light

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Microsystems & Nanoengineering 2021年第2期7卷 121-130页

作者： Tong Wu Hui Zheng Yichuan Kou Xinyue Su Naveen Reddy Kadasala Ming Gao Lei Chen donglai han Yang Liu Jinghai Yang College of Physics Jilin Normal UniversitySiping136000China Department of Chemistry Towson UniversityTowsonMD21252USA School of Materials Science and Engineering Changchun University of Science and TechnologyChangchun130022China

Ternary noble metal–semiconductor nanocomposites(NCs)with core–shell–satellite nanostructures have received widespread attention due to their outstanding performance in detecting pollutants through surface-enhanced Raman scattering(SERS)and photodegradation of organic *** this work,ternary Au@Cu2O–Ag NCs were designed and prepared by a galvanic replacement *** effect of different amounts of Ag nanocrystals adsorbed on the surfaces of Au@Cu2O on the SERS activity was investigated based on the SERS detection of 4-mercaptobenzoic acid(4-MBA)reporter *** on electromagnetic field simulations and photoluminescence(PL)results,a possible SERS enhancement mechanism was proposed and ***,Au@Cu2O–Ag NCs served as SERS substrates,and highly sensitive SERS detection of malachite green(MG)with a detection limit as low as 10−9 M was *** addition,Au@Cu2O–Ag NCs were recycled due to their superior self-cleaning ability and could catalyze the degradation of MG driven by visible *** work demonstrates a wide range of possibilities for the integration of recyclable SERS detection and photodegradation of organic dyes and promotes the development of green testing techniques.

关键词： method. visible ternary

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Facile Synthesis of Fe3Pt-Ag Nanocomposites for Catalytic Reduction of Methyl Orange

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Chemical Research in Chinese Universities 2018年第6期34卷 871-876页

作者： han donglai LI Boxun XING Guoliang ZhanG Yuanyuan CHEN Yue SUN Yantao ZhanG Yongjun LIU Yang YANG Jinghai School of Materials Science and Engineering Changchun Universi.tv of Science and Technology Changehun 130022 P. R. China Jilin Special Equipment Inspection and Research Institute Jilin 132013 P. R. China Key Laboratory of Functional Materials Physics and Chemistry Ministry of Education Jilin Normal University Changchun 130103 P. R. China

The polyethyleneimine dithiocarbamate was employed as polymers to synthesize Fe3Pt-Ag nanocomposites by using the seed deposition method. Fe3Pt-Ag nanocomposites were utilized for the catalytic degradation of methyl orange（MO） in the presence of NaBH4. Fe3Pt-Ag nanocomposites showed good chemical catalytic activity and stability in pollutants degradation. Furthermore, Fe3Pt-Ag nanocomposites can keep their efficiency till four cycles. The results suggest that the nanocatalysts with recyclability have broad prospects in environmental conservation applications.

关键词： Fe3Pt-Ag nanocomposite Methyl orange Catalytic reduction Magnetic property

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Conjugated ladder-type polymers with multielectron reactions as high-capacity organic anode materials for lithium-ion batteries

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Science China Materials 2022年第9期65卷 2354-2362页

作者： Jie Yu Xinyu Chen Heng-guo Wang Bo Gao donglai han Zhenjun Si Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education and Faculty of Chemistry Northeast Normal UniversityChangchun 130024China School of Materials Science and Engineering Changchun University of Science and TechnologyChangchun 130022China

Ladder-type conjugated polymers(LCPs)have attracted extensive attention in rechargeable lithium-ion batteries(LIBs)due to their inherent stability,poor solubility,tunable structure,and strongπ-πintermolecular ***,we describe the synthesis of two heteroatom nitrogen/oxygen-rich LCPs(TABQ-NTCDA,named TNL,and TABQPMDA,named TPL)by the polycondensation reaction of tetromino-benzoquinone(TABQ)and aromatic *** from the rigid backbone,the large conjugated skeleton and the heteroatom-driven superlithiation process in polycyclic aromatic systems,heteroatom nitrogen/oxygen-rich LCPs acting as organic anode materials for LIBs display high specific capacity and long-term cycle *** particular,TNL displays a high reversible capacity of 1063.5 mA h g^(-1) at 0.05 A g^(-1),good cyclic performance with a capacity retention of 75.2% after 1000 cycles at 1 A g^(-1),and excellent rate capability of 260.6 mA h g^(-1) even at 2 A g^(-1).In addition,the superlithiation storage mechanism was further confirmed by theoretical calculations,suggesting multiple active sites of C=O,C=N,and aromatic rings for lithium-ion ***,a full cell is also assembled by pairing a TNL anode with a LiCoO_(2) cathode,indicating the feasibility of practical application.

关键词： ladder-type conjugated polymers polycyclic aromatic systems multielectron reactions superlithiation mechanism lithium-ion batteries

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基于时空图卷积网络和自注意机制的频率稳定性预测

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电工技术学报 2024年第16期39卷 4985-4995页

作者：杜东来韩松荣娜贵州大学电气工程学院贵阳550025

针对传统数据驱动预测方法对电力系统频率稳定性预测的时空特性利用不充分、新拓扑下泛化能力差和可解释性较弱的问题,该文提出了一种基于自注意力机制和时空图卷积网络(STGCN)的频率稳定性预测方法。STGCN预测方法利用一维时间卷积层... 详细信息

针对传统数据驱动预测方法对电力系统频率稳定性预测的时空特性利用不充分、新拓扑下泛化能力差和可解释性较弱的问题,该文提出了一种基于自注意力机制和时空图卷积网络(STGCN)的频率稳定性预测方法。STGCN预测方法利用一维时间卷积层提取系统时间信息,利用切比雪夫图卷积通过近似拉普拉斯矩阵的多项式函数执行图卷积操作,从而捕获各母线及其邻居的拓扑结构信息;然后,采用基于自注意力机制的可微分图池化层来获得各母线注意力得分以对预测模型的决策过程进行可解释性分析,该分层池化策略允许模型尽可能地保留有价值的节点特征,并根据保留特征和动态拓扑有效分配节点以提高模型的泛化能力与鲁棒性;最后,在修改的新英格兰39节点系统和ACTIVSg500节点系统上的测试验证了所提方法的有效性。与传统方法相比,该文所提STGCN具有更高的预测精度、更好的鲁棒性和泛化能力。同时,该方法可以提供系统内各母线对预测结果的具体影响。

关键词：频率稳定性预测深度学习时空图神经网络自注意力机制可解释性

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Fe3O4@Au核-壳纳米复合材料的制备及对农药福美双的SERS检测研究

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高等学校化学学报 2019年第10期40卷 2067-2074页

作者：韩东来李博珣杨硕闫永胜杨丽丽刘洋李春香江苏大学绿色化学与化工技术研究院镇江212013 长春理工大学材料科学与工程学院长春130022 长春光学精密机械与物理研究所长春130033 吉林师范大学功能材料物理与化学实验室四平136000

首先采用热分解法制备了Fe3O4纳米材料,再将其作为磁性核,分别采用种子沉积法和种子介导生长法制备了Fe3O4-Au核-卫星纳米复合材料和Fe3O4@Au核-壳纳米复合材料,并对其形貌和性能进行了表征分析.结果表明,所制备的Fe3O4-Au核-卫星和Fe3O... 详细信息

首先采用热分解法制备了Fe3O4纳米材料,再将其作为磁性核,分别采用种子沉积法和种子介导生长法制备了Fe3O4-Au核-卫星纳米复合材料和Fe3O4@Au核-壳纳米复合材料,并对其形貌和性能进行了表征分析.结果表明,所制备的Fe3O4-Au核-卫星和Fe3O4@Au核-壳纳米复合材料粒径均匀,Au纳米颗粒均匀沉积/包覆在Fe3O4纳米材料表面,且样品均具有良好的磁响应性.使用4-氨基苯硫酚(4-ATP)作为拉曼探针分子,对比了这两种纳米复合材料作为SERS基底时的拉曼信号增强效果.结果显示,Fe3O4@Au核-壳纳米复合材料是更优秀的SERS基底,且该SERS基底具有良好的信号再现性.最后,使用Fe3O4@Au核-壳纳米复合材料作为SERS基底,成功地在苹果皮上检测出残留福美双的SERS信号.

关键词：四氧化三铁金核-壳纳米复合材料表面增强拉曼光谱(SERS) 福美双

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水稻生长环境监测与控制系统的研究

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农机化研究 2011年第11期33卷 36-39页

作者：李爱传衣淑娟谭峰韩东来黑龙江八一农垦大学信息技术学院黑龙江大庆163319 黑龙江农垦建三江分局八五九农场黑龙江佳木斯156326

以八五九农场为载体,旨在建立一个可以指导水稻生长的操作简便、界面友好的水稻生长环境监测与控制系统,为农场水稻的生产提供决策支持信息。该系统核心技术和设备为自主开发,整体技术水平高,且成套设备的成本及价格远低于国外同类产品... 详细信息

以八五九农场为载体,旨在建立一个可以指导水稻生长的操作简便、界面友好的水稻生长环境监测与控制系统,为农场水稻的生产提供决策支持信息。该系统核心技术和设备为自主开发,整体技术水平高,且成套设备的成本及价格远低于国外同类产品,在专用软件的支持下,可使监测数据定量化,决策科学化。

关键词：水稻长势采集模块图像处理节水农业株型参数数码相机

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