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Measurement of atmospheric nanoparticles:Bridging the gap between gas-phase molecules and larger particles

Journal of Environmental sciences 2023年第1期123卷 183-202页

作者： chao Peng Chenjuan Deng Ting Lei jun Zheng jun Zhao Dongbin Wang Zhijun Wu lin Wang Yan Chen Mingyuan liu Jingkun Jiang Anpei Ye Maofa Ge Weigang Wang state Key laboratory for structural chemistry of u.s.a.le and stable species Beijing National Laboratory for Molecular Sciences(BNLMS)CAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China state Key Joint laboratory of Environment simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China school of Environment science and Engineering Nanjing University of Information Science&TechnologyNanjing 210044China school of Atmospheric sciences Sun Yat-sen UniversityZhuhaiGuangdong 519082China state Key Joint laboratory of Environmental simulation and Pollution Control College of Environmental Sciences and EngineeringPeking UniversityBeijing 100871China shanghai Key laboratory of Atmospheric Particle Pollution and Prevention(laP3) Department of Environmental Science&EngineeringFudan UniversityShanghai 200433China Key laboratory for the Physics and chemistry of Nanodevices Department of ElectronicsSchool of Electronics Engineering and Computer SciencePeking UniversityBeijing 100871China university of chinese academy of sciences Beijing 100049China

Atmospheric nanoparticles are crucial components contributing to fine particulate matter(PM_(2.5)),and therefore have significant effects on visibility,climate,and human *** to the unique role of atmospheric nanoparticles during the evolution process from gas-phase molecules to larger particles,a number of sophisticated experimental techniques have been developed and employed for online monitoring and characterization of the physical and chemical properties of atmospheric nanoparticles,helping us to better understand the formation and growth of new *** this paper,we firstly review these state-of-the-art techniques for investigating the formation and growth of atmospheric nanoparticles(e.g.,the gas-phase precursor species,molecular clusters,physicochemical properties,and chemical composition).secondly,we present findings from recent field studies on the formation and growth of atmospheric nanoparticles,utilizing several advanced ***-more,perspectives are proposed for technique development and improvements in measuring atmospheric nanoparticles.

关键词： Nanoparticle Measurement techniques size distributions Physical properties Chemical composition

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Application of DNA barcoding to the identification of Hymenoptera parasitoids from the soybean aphid （Aphis glycines） in china

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Insect science 2014年第3期21卷 363-373页

作者： Qing-song Zhou Yu-Qiang Xi Fang Yu Xu Zhang Xue-jun li Chun-lai liu Ze-Qing Niu chao-Dong Zhu Ge-Xia Qiao Yan-Zhou Zhang Key laboratory of Zoological systematics and Evolution Institute of Zoology Chinese Academy of Sciences Beijing school of life science Anhui University Hefei College of chemistry and life sciences Shenyang Normal University Shenyang plant Protection institute Heilongjiang Academy of Agricultural Sciences Harbin China

Aphis glycines Matsumura is an important pest of soybean in Asia and North America. Hymenoptera parasitoids play a key role in the control of the soybean aphid. Thecorrect identification of parasitoids is a critical step that precedes the assessment of their potential biological control agents. Accurate identification of the majority of the speciesattacking the soybean aphid often requires elaborate specimen preparation and expert taxonomic knowledge. In this study, we facilitated the identification of soybean aphidparasitoids by applying a DNA barcoding approach following a preliminary morphological identification. We generated DNA sequence data from the mitochondrial COI gene andthe D2 region of 28s rDNA to assess the genetic variation within and between parasitoid species emerging from the soybean aphid in china. Fifteen Hymenoptera parasitoid speciesbelonging to 10 genera of five families were identified with little intra-specific variation （0.09% ± 0.06% for 28s and 0.36% ± 0. 18% for COI） and large inter-specific divergence（30.46% ± 3.42% for 28s and 20.4% ± 1.20% for COI）.

关键词： biological control COl 28s-D2 molecular identification species delimitation

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Exosome-Coated Zeolitic Imidazolate Framework Nanoparticles for Intracellular Detection of ATP

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chinese Journal of chemistry 2021年第8期39卷 2107-2112页

作者： Wenxing Lv Ziwei Han Yike li Yanjuan Huang Jiashu sun Xiaoquan Lu chao liu Tianjin Key laboratory of molecular Optoelectronic sciences Department of ChemistrySchool of ScienceTianjin UniversityTianjin 300072China beijing Engineering Research center for BioNanotechnology CAS Key Laboratory of Standardization and Measurement for NanotechnologyCAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190China school of Future Technology University of Chinese Academy of SciencesBeijing 100049China Key laboratory of Bioelectrochemistry and Environmental Analysis of Gansu Province College of Chemistry and Chemical EngineeringNorthwest Normal UniversityLanzhouGansu 730070China

The intracellular delivery of metal-organic frameworks(MOFs)encapsulated with functional biomolecules represents a promising av-enue in the field of biomedicine and *** improve the cellular uptake efficiency of MOFs,here we report the fabrication of cancer cell-derived exosome membra ne(EM)-coated zeolitic imidazolate framework-8(EM-ZIF-8)nan oparticles by using a microfluidic son ication device.

关键词： ATP Exosome Metal-organic frameworks Microreactors Nan oparticles

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Charge Rate-Dependent Decomposition Mechanism of Toroidal li_(2)O_(2)in li-O_(2)Batteries

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chinese Journal of chemistry 2021年第10期39卷 2668-2672页

作者： Zhen-Zhen shen Chi Zhou Rui Wen li-jun Wan CAs Key laboratory of molecular Nanostructure and Nanotechnology CAS Research/Education Center for Excellence in Molecular SciencesBeijing National Laboratory for Molecular Science(BNLMS)Institute of ChemistryChinese Academy of SciencesBeijing100190 China university of chinese academy of sciences Beijing100049 China

Main observation and conclusion using in situ atomic force microscopy,we visualized the oxidation dynamic process of toroidal lithium peroxide(li_(2)O_(2))in a working li-O2 battery and clarified the correlation between the decomposition behavior and the charging *** was found that at a low charge rate,the decomposition could occur at the li_(2)O_(2)/electrolyte interface,providing strong evidence that a tiny current is allowed to pass through the bulk phase of toroidal li_(2)O_(2).Further,the evolution of the periphery thickness,diameter and center thickness of the toroid as a function of charge capacity was quantitatively *** the early stage of charging,the diameter of the toroid radially shrinks and the shrinking rate slows down in the later ***,the periphery thickness of the toroid decreases at a faster and uniform rate,while the center thickness decreases obviously in the later stage of *** the charging rate promotes the decomposition occurring at the li_(2)O_(2)/electrode interface,causing direct desorption of the li_(2)O_(2)from the electrode and irreversible capacity degradation.

关键词： li-0_(2)Batteries scanning probe microscopy Toroidal li_(2)0_(2) Oxidation structure-activity relationships

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Hydrogen sulfide induces apoptosis of pulmonary artery smooth muscle cell in rats with pulmonary hypertension induced by high pulmonary blood flow

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chinese Medical Journal 2009年第24期122卷 3032-3038页

作者： li Wei JIN Hong-fang liu Die suN Jing-hui JIAN Pei-jun li Xiao-hui TANG chao-shu Du jun-bao department of Pediatrics Peking University First Hospital Beijing 100034 China department of Pediatrics Jilin University First Hospital Changchun Jilin 130021 China department of Physiology and Pathophysiology Peking University Health Science Center Beijing 100191 China Key laboratory of molecular Cardiovascular sciences Ministry of Education Beijing 100191 China

Background Abnormal apoptosis of pulmonary artery smooth muscle cells （PAsMCs） is an important pathophysiological process in the pulmonary artery structural remodeling and pulmonary hypertension. We investigated possible effect of endogenous hydrogen sulfide （H2s） on apoptosis of PAsMCs during the development of pulmonary hypertension induced by high pulmonary blood flow. Methods Thirty-nine male sprague-Dawley rats were randomly assigned to 4-week control, 4-week shunt, 4-week shunt＋propargylglycine （PPG）, 11-week control, 11-week shunt and 11-week shunt＋sodium hydrosulfide （Naris） groups. Rats in 4-week shunt, 4-week shunt＋PPG, 11-week shunt and 11-week shunt＋Naris groups underwent an abdominal aorta-inferior vena cava shunt. Rats in 4-week shunt＋PPG group were intraperitoneally injected with PPG, an inhibitor of endogenous H2s production, for 4 weeks. Rats in 11-week shunt＋Naris group were intraperitoneally injected with Naris, a H2s donor, for 11 weeks. Lung tissue H2s was evaluated by sulfide-sensitive electrode. Apoptosis of PAsMCs were detected by terminal deoxynucleotidyl transferase mediated duTP nick end labelling （TuNEL）. Expressions of Fas, bcl-2 and caspase-3 in the PAsMCs were analyzed with immunochemical staining. Results Four weeks after the shunting operation, the apoptosis of PAsMCs and expression of Fas and caspase-3 were significantly decreased （P 〈0.01）, but expression of bcl-2 increased significantly （P 〈0.01）. PPG administration further inhibited the apoptosis of PAsMCs, downregulated the expression of Fas and caspase-3 （P 〈0.01）, but increased the expression of bcl-2 （P 〈0.01）. After 11 weeks of shunting operation, the apoptosis of PAsMCs and expression of Fas and caspase-3 were significantly decreased （P 〈0.01）, but expression of bcl-2 increased obviously （P 〈0.01）. Naris administration significantly increased the apoptosis of PAsMCs, upregulated the expression of Fas and caspase-3, but inhibited the expression of bcl-2. Conclusions H2s indu

关键词： high pulmonary blood flow pulmonary hypertension hydrogen sulfide apoptosis

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Na_(3)Zr_(2)si_(2)PO_(12) solid-state electrolyte with glass-like morphology for enhanced dendrite suppression

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Rare Metals 2022年第12期41卷 4086-4093页

作者： Hang su shi-Wei Zhang Yi-Meng liu chao Yang li-Xiao Zhang sen Xin Ya You state Key laboratory of Advanced Technology for Materials synthesis and Processing Wuhan University of TechnologyWuhan 430070China CAs Key laboratory of molecular Nanostructure and Nanotechnology CAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of Sciences(CAS)Beijing 100190China university of chinese academy of sciences International school of Materials science and Engineering Wuhan University of TechnologyWuhan 430070China

Rechargeable batteries based on solid-state electrolytes are of great interest and importance for the next-generation energy storage due to their high energy output and improved *** building the solid-state batteries,Na_(3)Zr_(2)si_(2)PO_(12)(NZsP)represents a promising candidate as it features high chemical stability against air exposure and a high Na^(+)*** pellets were usually calcined at a high temperature,and the high volatility of Na and P elements easily led to the formation of impurity *** this work,the effects of calcination temperature and stoichiometry on the phase purity and ionic conductivity of the NZsP electrolyte were *** an elevated sintering temperature,the NZsP electrolyte showed a high ionic conductivity owing to decreased porosity,and the highest ionic conductivity at 30℃was observed to be 2.75×10^(-5)s·cm^(-1)with an activation energy of 0.41 *** the stoichiometry,the introduction of 5 mol%excessive P results in formation of more Na_(3)PO_(4) and glass-like phase at the grain boundary,which caused the blurred grain boundary and reduced grain barrier,and effectively suppressed Na dendrite growth,then accounted for improved cycling performance of a Na‖Na symmetric *** work provided insights on reasonable design and preparation of NZsP electrolyte towards practical realization of solid-state Na-metal batteries.

关键词： Na_(3)Zr_(2)si_(2)PO_(12)(NZsP) Natrium superionic conductor(NAsICON)solid-state electrolytes Grain boundary Ionic conductivity Glass-like morphology

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Polymerizable AEE-active Dye with Optical Activity for Fluorescent Nanoparticles Based on Phenothiazine:synthesis,self-assembly and Biological Imaging

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chinese Journal of Polymer science 2021年第11期39卷 1431-1440页

作者： Zeng-Fang Huang Ya-li Chen chao-Yue Zhou Yan-Hong li Mei li Xiao-Bo liu liu-Cheng Mao Jin-Ying Yuan Lei Tao Yen Wei school of Materials&Food Engineering Zhongshan InstituteUniversity of Electronic Science&Technology of ChinaZhongshan 528402China school of Materials and Energy University of Electronic Science&Technology of ChinaChengdu 610054China department of chemistry the Tsinghua Center for Frontier Polymer ResearchTsinghua UniversityBeijing 100084China

In consideration of various advantages such as less harm,higher sensitivity,and deeper imaging depth,etc.,AIE materials with longwave emission are attracting extensive attention in the fields of vascular visualization,organelle imaging,cells tracker,forensic detection,bioprobe and chemosensor,*** this work,a novel fluorescent(R)-PVHMA monomer with chirality and aggregation-induced emission enhancement(AEE)characteristics was acquired through enzymatic transesterification reaction basing on phenothiazine,and its[α]D25℃value was about-6.39°with a 3.08 eV bandgap calculated by the quantum ***,a series of PEG-PVH1 and PEG-PVH2 copolymers with chirality feature were achieved through RAFT polymerization of the obtained(R)-PVHMA and PEGMA with various feed *** the feed molar ratio of(R)-PVHMA increased from 21.5%to 29.6%,its actual molar fractions in the PEG-PVH1 and PEG-PVH2 copolymers accordingly increased from 18.1%to 25.7%.The molecular weight of PEG-PVH1 was about 2.2×10^(4) with a narrow PDI,and their kinetics estimation showed a first-order quasilinear *** aqueous solution,the amphiphilic copolymers PEG-PVH could self-assemble into about 100 nm *** a 90%water solution of H_(2)O and THF mixture,the fluorescence intensity had the maximum value,and the emission wavelength presented at 580 and 630 *** investigation of cytotoxicity and cells uptake showed that PEG-PVH FONs performed ou.s.a.ding biocompatibility and excellent cells absorption effects,which have great potential in bioimaging application.

关键词： AEE dye Optical activity RAFT polymerization Long-wave emission Biological imaging

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In-situ nanoscale insights into the evolution of solid electrolyte interphase shells:revealing interfacial degradation in lithium metal batteries

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science china chemistry 2021年第5期64卷 734-738页

作者： Yang shi Gui-Xian liu Jing Wan Rui Wen li-jun Wan Key laboratory of molecular Nanostructure and Nanotechnology Beijing National Laboratory for Molecular SciencesCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China university of the chinese academy of sciences Beijing 100049China

The solid electrolyte interphase(sEI)has caught considerable attention as a pivotal factor affecting lithium(li)metal battery ***,the understanding of the interfacial evolution and properties of the on-site formed sEI shells on li deposits during cycling is still at a preliminary ***,we provide a straightforward visualized evidence of sEI shells’evolution during li deposition/stripping to reveal anode degradation via in-situ atomic force microscopy(AFM).Nucleation and growth of quasi-spherical li particles are observed on a Cu substrate,followed by li stripping and collapse of sEI *** the subsequent cycling,new li deposits tend to nucleate at pristine sites with fresh sEI shells forming on *** previously collapsed sEI shells accumulate to increase interface impedance,eventually leading to capacity *** the electrochemical processes and interfacial degradation at the nanoscale will enrich fundamental comprehension and further guide improvement strategies of li metal anodes.

关键词： solid electrolyte interphase shell lithium deposition and stripping interfacial degradation lithium metal battery

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Anα/βhydrolase family member negatively regulates salt tolerance but promotes flowering through three distinct functions in rice

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molecular Plant 2022年第12期15卷 1908-1930页

作者： You-Huang Xiang Jia-jun Yu Ben liao jun-Xiang shan Wang-Wei Ye Nai-Qian Dong Tao Guo Yi Kan Hai Zhang Yi-Bing Yang Ya-chao li Huai-Yu Zhao Hong-Xiao Yu Zi-Qi Lu Hong-Xuan lin National Key laboratory of Plant molecular Genetics CAS Centre for Excellence in Molecular Plant Sciences and Collaborative Innovation Center of Genetics&DevelopmentShanghai Institute of Plant Physiology and EcologyChinese Academy of SciencesShanghai 200032China Guangdong laboratory for lingnan Modern Agriculture Guangzhou 510642China university of the chinese academy of sciences Beijing 100049China school of life science and Technology ShanghaiTech UniversityShanghai 201210China

Ongoing soil salinization drastically threatens crop growth,development,and yield *** is therefore crucial that we improve salt tolerance in rice by exploiting natural genetic ***,many salt-responsive genes confer undesirable phenotypes and therefore cannot be effectively applied to practical agricultural *** this study,we identified a quantitative trait locus for salt tolerance from the African rice species Oryza glaberrima and named it as salt Tolerance and Heading Date 1(sTH1).We found that sTH1 regulates fatty acid metabolic homeostasis,probably by catalyzing the hydrolytic degradation of fatty acids,which contributes to salt ***,we demonstrated that sTH1 forms a protein complex with D3 and a vital regulatory factor in salt tolerance,OsHAL3,to regulate the protein abundance of OsHAL3 via the 26s proteasome ***,we revealed that sTH1 also serves as a co-activator with the floral integrator gene Heading date 1 to balance the expression of the florigen gene Heading date 3a under different circu.s.a.ces,thus coordinating the regulation of salt tolerance and heading ***,the allele of sTH1 associated with enhanced salt tolerance and high yield is found in some African rice accessions but barely in Asian *** of the sTH1HP46 allele from African rice into modern rice cultivars is a desirable approach for boosting grain yield under salt ***,our discoveries not only provide conceptual advances on the mechanisms of salt tolerance and synergetic regulation between salt tolerance and flowering time but also offer potential strategies to overcome the challenges resulted from increasingly serious soil salinization that many crops are facing.

关键词： rice salt tolerance flowering time grain yield fatty acid

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Recent development in electronic structure tuning of graphitic carbon nitride for highly efficient photocatalysis

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Journal of semiconductors 2022年第2期43卷 24-34页

作者： chao li Jie li Yanbin Huang jun liu Mengmeng Ma Kong liu chao Zhao Zhijie Wang shengchun Qu Lei Zhang Haiyan Han Wenshuang Deng Zhanguo Wang Key laboratory of semiconductor Materials science Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China beijing Key laboratory of Low Dimensional semiconductor Materials and Devices Beijing 100083China center of Materials science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China College of Mechanical and Electrical Engineering Handan UniversityHandan 056005China school of Mathematical science and Engineering Hebei University of EngineeringHandan 056038China

The utilization of solar energy to drive energy conversion and simultaneously realize pollutant degradation via pho-tocatalysis is one of most promising strategies to resolve the global energy and environment *** the past decade,graphite carbon nitride(g-C3N4)has attracted dramatically growing attention for solar energy conversion due to its excellent physicochemical properties as a ***,its practical application is still impeded by several limitations and short-comings,such as high recombination rate of charge carriers,low visible-light absorption,*** an effective solution,the elec-tronic structure tuning of g-C_(3)N_(4)has been widely *** this context,firstly,the paper critically focuses on the different strategies of electronic structure tuning of g-C_(3)N_(4)like vacancy modification,doping,crystallinity modulation and synthesis of a new molecular *** the recent progress is ***,the challenges and future trends are summarized.

关键词： g-C_(3)N_(4) photocatalyst electronic structure

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