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Stability and band gap engineering of silica-confined lead halide perovskite nanocrystals under high pressure

Geoscience Frontiers 2021年第2期12卷 957-963页

作者： ruijing fu Yaping Chen Lingrui Wang Zhiwei Ma Pengfei Lv Ying Song Songrui Yang Guanjun Xiao Bo Zou State Key Laboratory of Superhard Materials College of PhysicsJilin UniversityChangchun130012China Key Laboratory of Materials Physics of Ministry of Education School of Physics and EngineeringZhengzhou UniversityZhengzhou450001China

SiO_(2)is the major mineral substance in the upper mantle of the ***,studies of the silica-coated materials under high-pressure are essential to explore the physical and chemical properties of the upper *** silica-confined CsPbBr_(3)nanocrystals(NCs)have recently attracted much attention because of the improved photoluminescence(PL)quantum yield,owing to the protection of silica ***,it remains considerable interest to further explore the relationship between optical properties and the structure of CsPbBr_(3)@SiO_(2)*** systemically studied the structural and optical properties of the CsPbBr_(3)@SiO_(2)NCs under high pressure by using diamond anvil cell(DAC).The discontinuous changes of PL and absorption spectra occurred at~1.40 *** X-ray diffraction(XRD)studies of CsPbBr_(3)@SiO_(2)NCs under high pressure indicated an isostructural phase transformation at about 1.36 GPa,owing to the pressure-induced tilting of the Pb-Br *** isothermal bulk moduli for two phases are estimated about 60.0 GPa and 19.2 GPa by fitting the equation of ***,the transition pressure point of CsPbBr_(3)@SiO_(2)NCs is slightly higher than that of pristine CsPbBr_(3)NCs,which attributed to the buffer effect of coating silica *** results indicate that silica shell is able to enhance the stabilization without changing the relationship between optical properties and structure of CsPbBr_(3)*** results were fascinated to model the rock metasomatism in the upper mantle and provided a new‘lithoprobe’for detecting the upper mantle.

关键词： Core-shell Perovskite CsPbBr3@SiO2 nanocrystals DAC High pressure Isostructural phase transformation

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魔力尺寸硒化镉纳米晶的压力稳定性研究

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无机材料学报 2021年第5期36卷 502-506页

作者：姜红梅赵文雅付瑞净肖冠军吉林大学超硬材料国家重点实验室物理学院长春130012

在极端条件下应用的耐压材料必须具有极高的结构和性能稳定性。魔力尺寸纳米晶体具有良好的结构、超小的粒子尺寸和精确的原子组成,逐渐成为研究的热点。采用胶体化学方法合成了硒化镉(CdSe)魔力尺寸纳米晶,其第一激子吸收峰位于463 nm... 详细信息

在极端条件下应用的耐压材料必须具有极高的结构和性能稳定性。魔力尺寸纳米晶体具有良好的结构、超小的粒子尺寸和精确的原子组成,逐渐成为研究的热点。采用胶体化学方法合成了硒化镉(CdSe)魔力尺寸纳米晶,其第一激子吸收峰位于463 nm处,相应的光致发光光谱表现出窄的半高宽,仅为13 nm。进一步利用金刚石对顶砧压机研究了所制备的CdSe魔力尺寸纳米晶在压力下的光学响应和稳定性。研究结果表明:随着压力的增大,CdSe魔力尺寸纳米晶的吸收和发光峰位保持不变,这种压力下的稳定行为与传统纳米材料在外界压力下所表现的敏感特性相反;压力卸下后,样品仍然保持CdSe魔力尺寸纳米晶的原始结构和形态。CdSe魔力尺寸纳米晶在加压过程中表现出的良好耐压性能,有助于极端压缩条件下的魔力尺寸纳米材料的研究。

关键词：魔力尺寸硒化镉耐压性能金刚石对顶砧

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Pressure-Induced Distinct Self-Trapped Exciton Emission in Sb^(3+)-Doped Cs_(2)NaInCl_(6)Double Perovskite

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Chinese Physics Letters 2024年第6期41卷 18-43页

作者：冯友佳陈亚平王乐瑶王家祥常断华袁亦方武敏付瑞净张丽丽王庆林王凯郭海中王玲瑞 Key Laboratory of Materials Physics(Ministry of Education) School of PhysicsZhengzhou UniversityZhengzhou 450001China Shandong Key Laboratory of Optical Communication Science and Technology School of Physics Science and Information TechnologyLiaocheng UniversityLiaocheng 252059China College of Applied Physics and Materials Wuyi UniversityJiangmen 529020China

The Cs_(2)NaInCl_(6) double perovskite is one of the most promising lead-free perovskites due to its exceptional stability and straightforward ***,it faces challenges related to inefficient *** and high pressure are employed to tailor the optical properties of Cs_(2)NaInCl_(6).Herein,Sb^(3+)doped Cs_(2)NaInCl_(6)(Sb^(3+):Cs_(2)NaInCl_(6)) was synthesized and it exhibits blue emission with a photoluminescence quantum yield of up to 37.3%.further,by employing pressure tuning,a blue stable emission under a very wide range from 2.7 GPa to 9.8 GPa is realized in Sb^(3+):Cs_(2)NaInCl_(6).Subsequently,the emission intensity of Sb^(3+):Cs_(2)NaInCl_(6) experiences a significant increase(3.3 times)at 19.0 *** is revealed that the pressure-induced distinct emissions can be attributed to the carrier self-trapping and detrapping between Cs_(2)NaInCl_(6) and Sb^(3+).Notably,the lattice compression in the cubic phase inevitably modifies the band gap of Sb^(3+):Cs_(2)NaInCl_(6).Our findings provide valuable insights into effects of the high pressure in further boosting unique emission characteristics but also offer promising opportunities for development of doped double perovskites with enhanced optical functionalities.

关键词： synthesis perovskite trapping

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高压下正交相CsPbI_3钙钛矿纳米棒的带隙调制

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高压物理学报 2019年第2期33卷 1-5页

作者：姜红梅曹晔杨松睿马志伟付瑞净石越肖冠军吉林大学物理学院超硬材料国家重点实验室吉林长春130012

全无机卤化物钙钛矿由于其稳定性强,且具有良好的光学性质,是一种很有前途的光电材料。然而,有效地设计其带隙以满足实际应用需求仍是亟待解决的关键问题。通过控制合成的反应时间和温度,对铯铅碘(CsPbI_3)纳米材料进行形貌调控,合成出... 详细信息

全无机卤化物钙钛矿由于其稳定性强,且具有良好的光学性质,是一种很有前途的光电材料。然而,有效地设计其带隙以满足实际应用需求仍是亟待解决的关键问题。通过控制合成的反应时间和温度,对铯铅碘(CsPbI_3)纳米材料进行形貌调控,合成出形貌均一、结晶性良好的棒状CsPbI_3纳米材料。进一步利用金刚石对顶砧,结合原位高压紫外-可见吸收光谱,对CsPbI_3纳米棒在高压下的带隙变化进行研究,发现高压下CsPbI_3纳米棒的带隙减小,带隙的可调控性为纳米材料在光伏电池领域的应用奠定基础。研究结果不仅有助于在原子尺度上建立CsPbI_3纳米棒的结构特性关系,而且为全无机钙钛矿纳米材料的实际应用提供重要线索。

关键词：卤素钙钛矿金刚石对顶砧高压带隙调制

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Reducing the measurement errors in nonadiabatic holonomic quantum computers

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 64-70页

作者： Guo-fu Xu Department of Physics Shandong University

Nonadiabatic holonomic quantum computers serve as the physical platform for nonadiabatic holonomic quantum *** quantum computation has entered the noisy intermediate-scale era, building accurate intermediate-scale nonadiabatic holonomic quantum computers is clearly necessary. Given that measurements are the sole means of extracting information, they play an indispensable role in nonadiabatic holonomic quantum computers. Accordingly, developing methods to reduce measurement errors in nonadiabatic holonomic quantum computers is of great importance. However, while much attention has been given to the research on nonadiabatic holonomic gates, the research on reducing measurement errors in nonadiabatic holonomic quantum computers is severely lacking. In this study, we propose a measurement error reduction method tailored for intermediate-scale nonadiabatic holonomic quantum computers. The reason we say this is because our method can not only reduce the measurement errors in the computer but also be useful in mitigating errors originating from nonadiabatic holonomic gates. Given these features,our method significantly advances the construction of accurate intermediate-scale nonadiabatic holonomic quantum computers.

关键词： quantum holonomy quantum computation measurement errors

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桂林岩溶石山常绿落叶阔叶混交林群落结构与物种多样性

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生态学报 2021年第6期41卷 2451-2459页

作者：盘远方梁志慧李嘉宝梁士楚姜勇吴华萍王菁菁傅瑞静周健梅广西师范大学广西高校野生动植物生态学重点实验室桂林541006 广西师范大学生命科学学院桂林541006

常绿落叶阔叶混交林是亚热带岩溶石山典型的森林植被类型之一,为了掌握这类森林植被的群落结构和物种多样性的变化特征,在桂林市灵田镇小水村岩溶石山常绿落叶阔叶混交林内设置了1个320 m×60 m的样地,用于分析群落的垂直结构、径级结... 详细信息

常绿落叶阔叶混交林是亚热带岩溶石山典型的森林植被类型之一,为了掌握这类森林植被的群落结构和物种多样性的变化特征,在桂林市灵田镇小水村岩溶石山常绿落叶阔叶混交林内设置了1个320 m×60 m的样地,用于分析群落的垂直结构、径级结构和α多样性变化。结果表明:(1)组成群落的木本植物有37科75属96种,密度为6371株/hm^(2)。其中,常绿树53种,落叶树43种。(2)垂直结构可以分为乔木上层、乔木下层和灌木层。其中,乔木上层分布34个物种(常绿18种,落叶16种),优势种为青冈栎(Cyclobalanopsis glauca)和南酸枣(Ziziphus jujuba);乔木下层分布30个物种(常绿17种,落叶13种),优势种为粗糠柴(Mallotus philippensis)和菜豆树(Radermachera sinica);灌木层分布32个物种(常绿18种,落叶14种),优势种为狗牙花(Ervatamia divaricata)和刺叶冬青(Ilex bioritsensis)。(3)在个体水平上,整个样地内所有个体胸径(DBH)呈明显的倒"J"型分布,平均胸径为4.32 cm;以小径级植株数量最多,DBH≤5 cm的个体占总个体数92.36%,而DBH≥20 cm的个体数较少,仅占0.96%;在物种水平上,平均DBH≤5 cm的物种有79种,占总物种数的85.86%,平均DBH≥20 cm的物种数(6种)仅占总物种数的6.52%。(4)每个样方中个体数的均值为262±132,Shannon-Wiener指数均值为2.67±0.26,Simpson指数均值为0.89±0.03,Pielou均匀度指数均值为0.78±0.05。(5)人为干扰和海拔对物种分布影响极显著,土壤厚度、岩石裸露率和坡度对物种分布影响显著。

关键词：常绿落叶阔叶混交林垂直结构径级结构 α多样性典型相关分析岩溶石山

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Preparation of silver nanoparticles through the reduction of straw-extracted lignin and its antibacterial hydrogel

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 504-514页

作者： Lou Zhang Shuo Li fu Tang Jingkai Zhang Yuetong Kang Hean Zhang Lidong Li State Key Laboratory for Advanced Metals and Materials School of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing 100083China

Silver nanoparticles(Ag NPs)have attracted attention in the field of biomaterials due to their excellent antibacterial ***,the reducing and stabilizing agents used for the chemical reduction of Ag NPs are usually toxic and may cause water *** this work,Ag NPs(31.2 nm in diameter)were prepared using the extract of straw,an agricultural waste,as the reducing and stabilizing *** analysis revealed that the straw extract contained lignin,the structure of which possesses phenolic hydroxyl and methoxy groups that facilitate the reduction of silver salts into Ag *** surfaces of Ag NPs were negatively charged due to the encapsulation of a thin layer of lignin molecules that prevented their *** the prepared Ag NPs were added to the precursor solution of acrylamide,free radical polymerization was triggered without the need for extra heating or light irradiation,resulting in the rapid formation of an Ag NP-polyacrylamide composite *** inhibition zone test proved that the composite hydrogel possessed excellent antibacterial ability due to the presence of Ag *** prepared hydrogel may have potential applications in the fabrication of biomedical materials,such as antibacterial dressings.

关键词： silver nanoparticles hydrogel straw extraction antibacterial

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Surfing the nano-wave:Emerging trends in cancer diagnostics and therapy

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Nano Research 2025年第1期18卷 520-544页

作者： Genping fu Yuting Weng Yunfan Li Carl Ho Yiyu fu Wenxuan Wang Songbin fu Wenjing Sun Jie Lin Xiaoyu Fan Binbin Jia Mengdi Cai Linlin Li Laboratory of Medical Genetics Harbin Medical UniversityHarbin 150081China Key Laboratory of Preservation of Human Genetics Resources and Disease Control in China(Harbin Medical University) Ministry of EducationHarbin 150081China Beijing Key Laboratory for Optical Materials and Photonic Devices Department of ChemistryCapital Normal UniversityBeijing 100048China College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion MaterialsChina Three Gorges UniversityYichang 443002China Washington University School of Medicine in St.Louis St.LouisMO 63110USA Ningbo Institute of Materials Technology and Engineering Chinese Academy of SciencesNingbo 315201China Aix-Marseille College Wuhan University of TechnologyWuhan 430070China

Facing the growing global challenge posed by cancer,the quest for more accurate and potent cancer diagnostic and therapeutic strategies continues to require a multidisciplinary integration *** review firstly summarizes various types of nanoparticles in cancer ***,it offers a comprehensive overview of signalenhancing techniques for visualizing in situ tumors,along with multimodal diagnostic methods for detecting *** for tumor therapy,cutting-edge drug delivery methods that can cross biological barriers and the pinpoint targeting of tumor lesions for precise medical intervention are *** the domain of therapeutic diagnostics,we elucidate the theoretical underpinnings and structural paradigms that underlie a spectrum of advanced diagnostic and therapeutic ***,we present a compendium of publications delineating the clinical applications of each nano-based theragnostic integration ***,this comprehensive review discusses the safety concerns pertaining to the clinical application of nanoparticles and proposes some strategic recommendations to enhance the precision and safety of theragnostic-guided,nanotechnology-based clinical practices.A deeper understanding of nanomaterials,together with intimate interdisciplinary collaborations,nano-wave will most probably guide human beings to win the battle against cancers.

关键词： nanoparticles drug delivery gastric cancer glioma glioblastoma

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Dynamic evolution of Co species and morphological reconstruction on Co-N-C during the nitrate reduction reaction in neutral solution

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Nano Research 2025年第1期18卷 164-172页

作者： Yuanlin fu Xiaoting Yang Ya Yu Kang Zhou Xiaoyang Ye Aoxiang Zhang Xiaojiao Hou Bingbing Chen fuqiang Fan Yuhang Li Yu fu Department of Chemistry College of SciencesNortheastern UniversityShenyang 110819China Department of Physical Education Shen Yang Institute of Science and TechnologyShenyang 110167China Sungrow Power Supply Co. Ltd.Hefei 230088China

The electrochemical nitrate reduction reaction(eNO_(3)^(-)RR)is considered an effective approach for converting nitrate-containing wastewater to *** adsorption and activation of NO_(3)^(-)is the critical step for many materials and the high energy barrier inhibits the continuation of the reduction *** Co nanoparticles encapsulated in the carbon layer we prepared spontaneously react with NO_(3)^(-)and the resulting Co^(2+)is then reduced by electroreduction to Co^(0),which circulates *** resulted in overcoming the energy input required for NO_(3)^(-)adsorption and conversion,thereby increasing the catalytic *** the same time,the morphology of the catalyst reconstructed from a dodecahedron to an interwoven nanosheet structure and the increased surface area also gives it better *** obtained Co(OH)_(2)@Co-N-C has an excellent eNO_(3)^(-)RR of 2774.7μg·h^(-1)·cm^(-2)with a Faraday efficiency of 81.4%in neutral *** the same time,the material-modified electrode can run stably for more than 100 *** work provides a new idea for the design of Co-based catalysts for eNO_(3)^(-)RR.

关键词： electrochemical nitrate reduction reaction Co-based catalyst dynamic evolution of Co species morphological reconstruction

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Imperative for long-term management and surveillance in Kawasaki disease

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World Journal of Clinical Cases 2025年第4期13卷 61-63页

作者： Yan Pan fu-Yong Jiao Department of Pediatrics The First Affiliated Hospital of Yangtze UniversityJingzhou 434000Hubei ProvinceChina Shaanxi Kawasaki Disease Diagnosis and Treatment Center Children’s HospitalShaanxi Provincial People’s Hospital of Xi’an Jiaotong UniversityXi’an 710000Shaanxi ProvinceChina

Kawasaki disease(KD)is a significant pediatric vasculitis known for its potential to cause severe coronary artery *** the effectiveness of initial treatments,such as intravenous immunoglobulin,KD patients can experience long-term cardiovascular issues,as evidenced by a recent case report of an adult who suffered a ST-segment elevation myocardial infarction due to previous KD in the World Journal of Clinical *** editorial emphasizes the critical need for long-term management and regular surveillance to prevent such *** drawing on recent research and case studies,we advocate for a structured approach to follow-up care that includes routine cardiac evaluations and preventive measures.

关键词： Kawasaki disease Long-term management Coronary artery aneurysm Surveillance Preventive care

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