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Tunning the bandgap of MnO_(2)homojunction by building active high-index facet to achieve rapid electron transfer for enhanced photocatalytic sterilization

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Journal of Materials Science & Technology 2024年第1期168卷 265-275页

作者： Tao Zhang Bo Li Chaofeng Wang Shuilin Wu Shengli Zhu Hui Jiang Yufeng Zheng Zhaoyang Li Zhenduo Cui Yu Zhang Paul K Chu xiangmei liu Biomedical Materials Engineering Research Center Hubei Key Laboratory of Polymer MaterialsMinistry-of-Education Key Laboratory for the Green Preparation and Application of Functional MaterialsSchool of Materials Science and Engineering Hubei UniversityWuhan 430062China School of Health Science&Biomedical Engineering Hebei University of TechnologyTianjin 300401China School of Materials Science&Engineering Peking UniversityBeijing 100871China School of Materials Science&Engineering the Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of ChinaTianjin UniversityTianjin 300072China Department of Orthopedics Guangdong Provincial People’s HospitalGuangdong Academy of Medical SciencesGuangzhou 510080China Department of Physics Department of Materials Science and Engineering and Department of Biomedical EngineeringCity University of Hong KongHong Kong 999077China

Photocatalysis has been a research hotspot in recent years,and the design and modification of photocat-alysts have been the key *** methods for designing photocatalysts,including constructing heterojunctions and homojunctions,have been developed on the basis of *** this study,two homojunctions of manganese dioxide(MnO_(2)),including a high-index crystal plane homojunction and a general homojunction,are prepared using a stepwise hydrothermal *** a capping agent,the high-index crystal surface of the MnO_(2)is *** is found that the electron transport efficiency be-tween the two components of the homojunction with high-index planes is higher and the adsorption capacity of the oxygen is stronger,which leads to higher photocatalytic *** addition,the newly designed high-index homojunction is used for the treatment of bacterial infections,and it kills Staphy-lococcus aureus(***)and Escherichia coli(***)at rates of 99.95%±0.04%and 99.31%±0.25%,*** also has excellent therapeutic effects on mouse wounds,which implies superb practical application *** work provides a new strategy for the improved design of homojunctions and the application of photocatalytic materials.

关键词： Photocatalysis Homojunction Bandgap High-index facet Antibacterial

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巨噬细胞负载Fe_(3)O_(4)@PLGA纳米颗粒触发智能催化功能杀死多重耐药大肠杆菌

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Engineering 2024年第3期34卷 174-186页

作者： Jieni Fu xiangmei liu Zhaoyang Li Yufeng Zheng Yu Zhang Hui Jiang Yanqin Liang Shengli Zhu Zhenduo Cui Shuilin Wu Key Laboratory of Advanced Ceramics and Machining Technology of the Ministry of Education School of Materials Science and EngineeringTianjin UniversityTianjin 300401China School of Materials Science and Engineering Peking UniversityBeijing 100871China School of Health Sciences and Biomedical Engineering Hebei University of TechnologyTianjin 300401China Department of Orthopedics Guangdong Provincial People’s HospitalGuangdong Academy of Medical SciencesGuangzhou 510080China

Infections with multidrug-resistant(MDR)Gram-negative bacteria,such as MDR Escherichia coli(***),remain a challenge due to the lack of safe antibiotics and high fatality rates under anti-infection *** work presents a form of biomimetic intelligent catalysis inspired by the selective biocatalytic property of macrophages(MΦs),consisting of an intelligent controlling center(a living MΦ)and a Fenton reaction catalyst(Fe_(3)O_(4)@poly(lactic-co-glycolic acid)(PLGA)nanoparticles)for killing MDR *** without harming normal *** MΦ-Fe_(3)O_(4)@PLGA particles(i.e.,the intelligent catalysis particles)exhibit selective biocatalysis activity toward MDR *** by producing H_(2)O_(2) and lipid droplets(LDs).This process activates the lipid metabolism and glycan biosynthesis and metabolism pathways based on the result of RNA sequencing data *** H_(2)O_(2) further reacts with Fe_(3)O_(4)@PLGA to form highly toxic hydroxyl radicals(·OH),while the LDs contain antimicrobial peptides and can target MDR *** highly toxicOH and antimicrobial peptides are shown to combat with MDR ***,such that the antibacterial efficiency of the MΦ-Fe_(3)O_(4)@PLGA particles against MDR *** is 99.29%±0.31%in *** importantly,after several passages,the intelligent catalysis function of the MΦ-Fe_(3)O_(4)@PLGA particles is well ***,the concept of biomimetic intelligent catalysts displays potential for treating diseases other than infections.

关键词： Multidrug-resistant Escherichia coli Macrophage-Fe_(3)O_(4)@PLGA particles Biomimetic intelligent catalysis

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镧-钛氧簇闪烁体中无机簇核和有机配体的协同作用实现高性能X射线成像

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Science China Materials 2024年第8期67卷 2575-2582页

作者：李茹画桑天天曹钱刘娟倪京飞王超刘淑娟刘湘梅赵强 State Key Laboratory of Organic Electronics and Information Displays&Jiangsu Key Laboratory of Smart Biomaterials and Theranostic Technology Institute of Advanced MaterialsNanjing University of Posts and TelecommunicationsNanjing 210023China College of Electronic and Optical Engineering&College of Flexible Electronics(Future Technology) Nanjing University of Posts&TelecommunicationsNanjing 210023China Shanxi Open University Taiyuan 030027China

随着对X射线成像,特别是对弯曲和不规则物体的三维成像的需求不断增加,高性能柔性闪烁膜的开发引起了人们的极大关注.镧系(Ⅲ)-有机闪烁体由于其在结构设计和光学可调谐方面的巨大灵活性,最近成为一类新的有前途的X射线闪烁体.然而,设... 详细信息

随着对X射线成像,特别是对弯曲和不规则物体的三维成像的需求不断增加,高性能柔性闪烁膜的开发引起了人们的极大关注.镧系(Ⅲ)-有机闪烁体由于其在结构设计和光学可调谐方面的巨大灵活性,最近成为一类新的有前途的X射线闪烁体.然而,设计具有高光产额和良好溶液分散性的镧系元素(Ⅲ)-有机闪烁体仍然具有挑战性.本文报道了一种具有高效X射线激发发光(XEL)和良好溶液分散性的铕-钛氧簇合物(Eu-TiOCs)闪烁体.笼状镧-钛氧原子簇核作为X射线吸收剂,产生高能电子并引发二次电子热弛豫.有机配体作为能量转移桥和天线,通过级联能量转移来敏化Ln^(3+);离子的发光.Eu-TiOCs闪烁体表现出高的稳态X射线光产额(高达26,816±2000 photons MeV^(-1)).此外,EuTiOCs闪烁体和聚合物的羟基之间的弱氢键相互作用增强了Eu-TiOCs的溶液分散性,有利于制备低光散射和均匀闪烁膜.铕-钛氧簇与聚合物之间的通过无机簇笼和有机配体之间的协同作用,所得到的柔性闪烁膜对平面和非平面物体都表现出的高空间分辨率和低剂量X射线成像.本工作为进一步设计和制备高性能X射线闪烁体和高分辨率柔性闪烁膜提供了新思路.

关键词： X射线成像不规则物体有机配体能量转移二次电子闪烁体高能电子热弛豫

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Organic room-temperature phosphorescent polymers for efficient X-ray scintillation and imaging

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Advanced Photonics 2022年第3期4卷 90-96页

作者： Juan Wei Yangyang Jiang Chenyuan liu Jiayu Duan Shanying liu xiangmei liu Shujuan liu Yun Ma Qiang Zhao Nanjing University of Posts and Telecommunications Institute of Advanced Materials and Institute of Flexible Electronics(Future Technology)State Key Laboratory of Organic Electronics and Information Displays and Jiangsu Key Laboratory for BiosensorsNanjingChina Nanjing University of Posts and Telecommunications College of Electronic and Optical Engineering and Microelectronics and College of Flexible Electronics(Future Technology)Jiangsu Province Engineering Research Center for Fabrication and Application of Special Optical Fiber Materials and DevicesNanjingChina

Materials that exhibit visible luminescence upon X-ray irradiation show great potential in the medical and industrial *** organic materials have recently emerged as promising scintillators for X-ray detection and radiography,due to their diversified design,low cost,and facile ***,recent progress in efficient radioluminescence has mainly focused on small molecules,which are inevitably associated with processability and repeatability ***,a concise strategy is proposed to prepare radioluminescent polymers that exhibit multiple emission colors from blue to yellow with high brightness in an amorphous state by the radical copolymerization of negatively charged polyacrylic acid and different positively charged quaternary phosphonium *** of the obtained polymers exhibits excellent photostability under a high X-ray irradiation dosage of 27.35 Gy and has a detection limit of 149 nGy s^(−1).This performance is superior to that of conventional anthracene-based ***,by simply drop-casting a polymer methanol solution on a quartz plate,a transparent scintillator screen was successfully fabricated for X-ray imaging with a resolution of 8.7 line pairs mm^(−1).The pure organic phosphorescent polymers with a highly efficient radioluminescence were demonstrated for the first time,and the strategy reported herein offers a promising pathway to expand the application range of amorphous organic scintillators.

关键词： organic scintillator radioluminescence room temperature phosphorescence X-ray imaging copolymer.

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Surface photodynamic ion sterilization of ITO-Cu_(2)O/ZnO preventing touch infection

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Journal of Materials Science & Technology 2022年第27期122卷 10-19页

作者： Zexin liu xiangmei liu Zhenduo Cui Yufeng Zheng Zhaoyang Li Yanqin Liang Xubo Yuan Shengli Zhu Shuilin Wu School of Materials Science&Engineering the Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of ChinaTianjin UniversityTianjin 300072China School of Life Science and Health Engineering Hebei University of TechnologyTianjin 300401China School of Materials Science&Engineering Peking UniversityBeijing 100871China

Pathogenic microbial infections are threatening the people’s health and even *** most common channel of infections can be caused by skin contact,especially hand touching facilities such as touching *** this work,Cu_(2)O covered with ZnO nanofilm was prepared on the surface of indium tin oxide conductive glass by electrodeposition and the followed atomic layer deposition *** composite coating had a light transmittance of 71.5%,which met the light transmission needs of touch screen *** spin resonance spectra showed that composite materials can generate more reactive oxygen species(ROS)than a single component under solar light *** was because a p-n junction with a built-in electric field was formed at the interface after Cu_(2)O contacting with *** the process of photocatalysis,photogenerated electrons and holes migrated at the interface driven by the built-in electric field,which promoted the separation of *** antibacterial rate against Staphylococcus aureus reached 92.5%after 3 min of light irradiation with simulated sunlight due to the synergy of ROS and Cu ions,Zn ***,this work may provide a potential method for antibacterial application of preventing hand touch infections.

关键词： Antibacterial Cu_(2)O ZnO Contact infection Photodynamic ion sterilization

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高中生物学情境教学探究

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大连教育学院学报 2024年第1期40卷 47-49页

作者：刘香梅董平赵丹莉宋雨浓大连教育学院高中研训中心辽宁大连116021 辽宁师范大学附属中学辽宁大连116023 大连市第一中学辽宁大连116011

情境教学符合学生的心理特点及认知特点,可有效促进学生思维向科学思维的转变,因此创设情境在新课程教学中必不可少。实施情境教学要理解情境教学的概念内涵、理论基础,借助情境,启迪学生思维,突出生物学学科的本质,加强生物课堂的有效性。

关键词：情境情境教学高中生物学

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长期干旱胁迫下Mdm-miR160-MdARF17-MdHYL1模块调控苹果生长发育的研究

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西北农业学报 2024年第3期33卷 490-502页

作者：刘晨毛秀山刘祥梅申小霞刘振中西北农林科技大学园艺学院陕西杨凌712100 山东交通职业学院山东潍坊261206 诸城市龙城中学山东诸城262299

为了研究长期干旱条件下Mdm-miR160- MdARF17- MdHYL1调控网络在苹果生长发育中的作用,以GL-3和Mdm-miR160e OE、 MdARF17RNAi、 MdmARF17OE、 MdHYL1OE及 MdHYL 1 RNAi转基因苹果为试验材料,进行为期3个月的长期干旱处理,测定苹果株高... 详细信息

为了研究长期干旱条件下Mdm-miR160- MdARF17- MdHYL1调控网络在苹果生长发育中的作用,以GL-3和Mdm-miR160e OE、 MdARF17RNAi、 MdmARF17OE、 MdHYL1OE及 MdHYL 1 RNAi转基因苹果为试验材料,进行为期3个月的长期干旱处理,测定苹果株高、根干质量、根冠比以及叶片净光合速率、胞间CO_(2)浓度、气孔导度、蒸腾速率、叶绿素荧光值和水分利用效率。结果表明,在长期干旱胁迫下,Mdm-miR160e OE转基因苹果植株更矮化,根冠比、根干质量、光合能力及水分利用效率大于GL-3植株,具有更强的耐旱性;MdARF17 RNAi植株比GL-3更矮,且具有更大的根冠比、根干质量、光合能力和水分利用效率,而 MdARF17OE与之相反;MdHYL1RNAi植株对长期干旱胁迫更敏感,其株高大于野生型且具有更小的根冠比、更低的光合能力和水分利用效率,而 MdHYL1OE植物对长期干旱条件具有更强的适应性,生长发育表型与RNAi植株相反。综上所述,Mdm-miR160- MdARF17- MdHYL1调控网络在苹果响应长期干旱过程中发挥了重要功能,为苹果抗旱分子育种提供了候选基因。

关键词：苹果长期干旱 MdARF17 Mdm-miR160 MdHYL1

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个性化护理策略在老年危重症患者人工气道管理中的应用

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中国医药科学 2024年第10期14卷 95-98页

作者：罗春霞邓娟柳香梅黄福娣曾丽云福建省三明市第二医院福建三明366000

目的探讨个性化护理策略在老年危重症患者人工气道管理中的应用效果。方法选取2022年7—12月三明市第二医院重症医学科收治的急性呼吸衰竭和慢性呼吸衰竭加重期老年危重症患者140例为研究对象,采用随机数表法分为观察组和对照组,每组... 详细信息

目的探讨个性化护理策略在老年危重症患者人工气道管理中的应用效果。方法选取2022年7—12月三明市第二医院重症医学科收治的急性呼吸衰竭和慢性呼吸衰竭加重期老年危重症患者140例为研究对象,采用随机数表法分为观察组和对照组,每组各70例,对照组采用常规护理方法,观察组采用个性化护理策略。比较两组患者人工气道管理效果。结果观察组患者痰液引起的刺激性咳嗽、胃内容物反流及气道黏膜损伤发生率均低于对照组,差异有统计学意义(P <0.05);观察组患者人工气道堵管以及医院获得性肺部感染发生率均低于对照组,吸痰间隔时间长于对照组,差异有统计学意义(P <0.05)。结论个性化护理策略在老年危重症患者气道管理中的效果显著,可降低并发症发生率,提高护理质量,值得临床应用。

关键词：个性化护理老年患者危重症人工气道管理

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Simultaneously enhancing the photocatalytic and photothermal effect of NH_(2)-MIL-125-GO-Pt ternary heterojunction for rapid therapy of bacteria-infected wounds

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Bioactive Materials 2022年第12期7卷 421-432页

作者： Yue Luo Bo Li xiangmei liu Yufeng Zheng Erjing Wang Zhaoyang Li Zhenduo Cui Yanqin Liang Shengli Zhu Shuilin Wu Biomedical Materials Engineering Research Center Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed By the Province and MinistryHubei Key Laboratory of Polymer MaterialsMinistry-of-Education Key Laboratory for the Green Preparation and Application of Functional MaterialsSchool of Materials Science&EngineeringHubei UniversityWuhan430062China School of Life Science and Health Engineering Hebei University of TechnologyTianjin300401China School of Materials Science and Engineering Peking UniversityBeijing100871China School of Materials Science&Engineering The Key Laboratory of Advanced Ceramics and Machining Technology By the Ministry of Education of ChinaTianjin UniversityTianjin300072China

Infections caused by bacteria threaten human health,so how to effectively kill bacteria is an urgent *** therefore synthesized a NH_(2)-MIL-125-GO-Pt ternary composite heterojunction with graphene oxide(GO)and platinum(Pt)nanoparticles co-doped with metal-organic framework(NH_(2)-MIL-125)for use in photocatalytic and photothermal synergistic disinfection under white light *** to the good conductivity of GO and the Schottky junction between Pt and MOF,the doping of GO and Pt will effectively separate and transfer the photogenerated electron-hole pairs generated by NH_(2)-MIL-125,thereby effectively improving the photocatalytic efficiency of NH_(2)-***,NH_(2)-MIL-125-GO-Pt has good photothermal effect under white light ***,the NH_(2)-MIL-125-GO-Pt composite can be used for effective *** antibacterial efficiency of NH_(2)-MIL-125-GO-Pt against Staphylococcus aureus and Escherichia coli were as high as 99.94%and 99.12%,respectively,within 20 min of white light *** vivo experiments showed that NH_(2)-MIL-125-GO-Pt could effectively kill bacteria and promote wound *** work brings new insights into the use of NH_(2)-MIL-125-based photocatalyst materials for rapid disinfection of environments with pathogenic microorganisms.

关键词： Bacterial infection NH_(2)-MIL-125 Antibacterial Photocatalytic Photothermal

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Probiotic-based nanoparticles for targeted microbiota modulation and immune restoration in bacterial pneumonia

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National Science Review 2023年第2期10卷 183-198页

作者： Jieni Fu xiangmei liu Zhenduo Cui Yufeng Zheng Hui Jiang Yu Zhang Zhaoyang Li Yanqin Liang Shengli Zhu Paul K Chu Kelvin Wai Kwok Yeung Shuilin Wu School of Materials Science & Engineering the Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China Tianjin University School of Materials Science & Engineering Peking University School of Health Science & Biomedical Engineering Hebei University of Technology Department of Orthopedics Guangdong Provincial People's HospitalGuangdong Academy of Medical Sciences Department of Physics Department of Materials Science and Engineering and Department of Biomedical Engineering City University of Hong Kong Department of Orthopaedics & Traumatology Li Ka Shing Faculty of Medicine The University of Hong Kong

While conventional bacterial pneumonia mainly centralizes avoidance of bacterial colonization,it remains unclear how to restore the host immunity for hyperactive immunocompetent primary and immunocompromised secondary bacterial ***,probiotic-based nanoparticles of OASCLR were formed by coating chitosan,hyaluronic acid and ononin on living Lactobacillus *** nanoparticles could effectively kill various clinic common pathogens and antibacterial efficiency was> 99.97%.Importantly,OASCLR could modulate lung microbiota,increasing the overall richness and diversity of microbiota by decreasing pathogens and increasing probiotic and commensal ***,OASCLR could target inflammatory macrophages by the interaction of OASCLR with the macrophage binding site of CD 44 and alleviate overactive immune responses for hyperactive immunocompetent ***,OASCLR could break the state of the macrophage’ s poor phagocytic ability by upregulating the expression of the extracellular matrix assembly,immune activation and fibroblast activation in immunocompromised *** macrophage’ s phagocytic ability was increased from 2.61% to 12.3 %.Our work provides a potential strategy for hyperactive immunocompetent primary and immunocompromised secondary bacterial pneumonia.

关键词： probiotic-based nanoparticles immunocompetent primary bacterial pneumonia immunocompromised secondary bacterial pneumonia restoring host immunity

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