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Synthesis of porous hematite nanorods loaded with CuO nanocrystals as catalysts for CO oxidation

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Journal of Natural Gas Chemistry 2011年第6期20卷 669-676页

作者： Jianliang Cao Yan Wang Tianyi Ma yuping liu Zhongyong Yuan Institute of New Catalytic Materials science Key Laboratory of Advanced Energy Materials Chemistry （Ministry of Education） College of Chemistry Nankai University Tianjin 300071 China

Porous hematite （α-Fe2O3） nanorods with the diameter of 20-40 nm and the length of 80-300 nm were synthesized by a simple surfactant-assisted method in the presence of cetyltrimethylammonium bromide （CTAB）.The α-Fe2O3 nanorods possess a mesostructure with a pore size distribution in the range of 5-12 nm and high surface area,exhibiting high catalytic activity for CO *** nanocrystals were loaded on the surface of porous α-Fe2O3 nanorods by a deposition-precipitation method,and the catalysts exhibited superior activity for catalytic oxidation of CO,as compared with commercial α-Fe2O3 powders supported CuO *** enhanced catalytic activity was attributed to the strong interaction between the CuO nanocrystals and the support of porous α-Fe2O3 nanorods.

关键词： porous materials iron oxide nanostructures CuO supported nanocatalysts catalytic CO oxidation

Wheat Elongator subunit 4 is required for epigenetic regulation of host immune response to Rhizoctonia cerealis

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The Crop Journal 2020年第4期8卷 565-576页

作者： Kai Wang Wei Rong yuping liu Hui Li Zengyan Zhang The National Key Facility for Crop Gene Resources and Genetic Improvement Key Laboratory of Biology and Genetic Improvement of Triticeae CropsMinistry of AgricultureInstitute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China Institute of Cereal and Oil Crops Hebei Academy of Agriculture and Forestry SciencesShijiazhuang 050035HebeiChina

Wheat(Triticum aestivum)is necessary for global food *** necrotrophic fungus Rhizoctonia cerealis is the causal agent of sharp eyespot,a devastating disease of *** the Elongator complex,composed of six subunits,has been implicated in growth,development,and innate immunity in Arabidopsis,little is known about its functions in wheat or the involvement of Elongator subunit 4 in histone *** this study,we identified the Elongator subunit 4-encoding gene Ta ELP4 in wheat resistance response to ***,and verified that Ta ELP4 increased histone acetylation in regions of defenseassociated genes and regulated immune response to *** ELP4 was more highly expressed in resistant than in susceptible wheat cultivars and was induced in resistant wheat after infection by *** of Ta ELP4 in wheat not only impaired resistance to ***,but also repressed both histone acetylation levels and the expression of a subset of defense-associated genes,including Ta AGC1,Ta CPK7-D,Ta PAL5,Defensin,and *** expression of Ta ELP4 in Arabidopsis increased histone acetylation levels in coding and promoter regions of defense genes and increased their transcription,leading to increased resistance to infection by the pathogen Botrytis *** results suggest that Ta ELP4 positively regulates innate immune responses of wheat and Arabidopsis to *** and *** by increasing histone acetylation levels of defense-associated genes and increasing their *** study has shed light on the involvement of Ta ELP4 in histone acetylation and resistance response against *** ELP4 may potentially be used to improve wheat resistance against sharp eyespot.

关键词： Wheat resistance Arabidopsis

Aluminum and phosphorus codoped “superaerophobic” Co3O4 microspheres for highly efficient electrochemical water splitting and Zn-air batteries

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Journal of Energy Chemistry 2020年第11期29卷 324-331页

作者： Xian-Wei Lv yuping liu Wenwen Tian Lijiao Gao Zhong-Yong Yuan National Institute for Advanced Materials School of Materials Science and EngineeringNankai UniversityTianjin 300350China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) College of ChemistryNankai UniversityTianjin 300071China

Multifunctional non-precious catalysts for hydrogen/oxygen evolution reaction(HER/OER) and oxygen reduction reaction(ORR) constitute the bottleneck in the applications in electrochemical overall water splitting(OWS) and Zn-air batteries. Herein, a trifunctional electrocatalyst of urchin-like Al,P-codoped Co3O4 microspheres supported on Ni foam(denoted as AP-CONPs/NF) was fabricated via a hydrothermal process and subsequent low-temperature annealing and phosphorization, exhibiting enhanced OER, HER and ORR activities compared with single-doped and undoped samples. Their surface self-organized microstructure and excellent "superaerophobic" feature make a high bubble repellency, which boost diffusion of reactants and electrolyte-electrode intimate contact. The codoping of Al and P elements into Co3O4 betters right the balance among surface chemical state, the increased oxygen vacancies and the promoted charge transfer. Encouraged by these synergistic advantages, the AP-CONPs/NF was further employed as excellent bifunctional electrodes for the OWS(low cell voltage of 1.57 V at 10 mA cm-2) and as air cathode for rechargeable Zn-air batteries(high power density of 89.1 mW cm-2), which demonstrates a great feasibility for practical applications.

关键词： Trifunctional electrocatalysts Co3O4 Overall water splitting Zn-air batteries "Superaerophobic"surface Anion-cation double doping

The characteristics and significance of pure nitrogen fluid inclusions in Xikuangshan copper deposit,Dongchuan,Yunnan of China

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Chinese Journal Of Geochemistry 2012年第1期31卷 78-84页

作者： YE Lin liu yuping YANG Yulong GAO Wei State Key Laboratory of Ore Deposit Geochemistry Institute of GeochemistryChinese Academy of SciencesGuiyang 550002China Graduate University of Chinese Academy of Sciences Beijing 100049China

Nitrogen is an important gas-phase element in geological fluid,and normally hosted in mineralizing fluid,in which the content is very *** 100% mol pure nitrogen inclusion was discovered in copper-bearing quartz vein from Xikuangshan copper deposit,Dongchuan,Yunnan Province in this *** is between 3 and 5 μm,in shape of ellipse,occurring in group or independence without obvious orientation,and co-existed with primary gas-liquid *** analysis by using laser Raman spectroscopy shows its composition is dominated by nitrogen with minor *** concentration of N2 may be the necessary and sufficient condition for forming this kind of *** is suggested that there are two genesis modes of pure N2 inclusion in the deposit,oxida-tion-devolativation of mantle matter and trap of metasomatic fluid in organic matter decomposition in Luoxue For-mation *** conclusion,pure N2 inclusion hardly presents in the ore-forming fluids,which providing a new evidence for the genesis of Xikuangshan type copper deposit.

关键词：中国云南锡矿山流体包裹体纯氮铜矿东川激光拉曼光谱充分必要条件

LA-ICP-MS U-Pb zircon dating of the Bozhushan granite in Southeast Yunnan

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Chinese Journal Of Geochemistry 2013年第2期32卷 170-180页

作者： LI Kaiwen ZHANG Qian WANG Dapeng CAI Yi liu yuping State Key Laboratory of Ore Deposit Geochemistry Institute of Geochemistry Chinese Academy of Sciences University of Chinese Academy of Sciences

The LA-ICP-MS U-Pb zircon dating of eight typical samples from four units of the Bozhushan granite intrusion in southeastern Yunnan Province, constrains the age of acidic magmatic intrusion in this area. Both the oscillatory zoning and chondrite-normalized REE patterns characterized by LREE-depletion and HREE-enrichment with positive Ce anomaly and negative Eu anomaly indicate the magmatic genesis of these zircons. Eight zircon samples from the Bozhushan granite yielded a mean 206 Pb/ 238 U age of (85.58±1.0) Ma (MSWD=4.1) to (88.10±0.66) Ma (MSWD=1.8). These chronology data suggest an accurate isotopic age for the intrusion of the Bozhushan granite, and are different from the published age data of 48 to 111.5 Ma. The geochronology data of the Gejiu, Dulong and Dachang super-large deposits and related Yanshanian granites indicated that there occurred large-scale granitic magmatism and mineralization events in western Nanling region during the Late Cretaceous.

关键词： U-Pb同位素定年 LA-ICP-MS 燕山期花岗岩锆石滇东南同位素年龄典型样本稀土富集

Controllably partial removal of thiolate ligands from unsupported Au_(25) nanoclusters by rapid thermal treatments for electrochemical CO_(2)reduction

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Journal of Energy Chemistry 2023年第11期86卷 16-22,I0002页

作者： Liting Huang Yongfeng Lun yuping liu Liming Chen Bowen Li Shuqin Song Yi Wang The Key Lab of Low-carbon Chemistry&Energy Conservation of Guangdong Province PCFM LabSchool of Chemical Engineering and TechnologySchool of Materials Science and EngineeringSun Yat-sen UniversityGuangzhou 510275GuangdongChina

Colloidal synthesis of metal nanoclusters will inevitably lead to the blockage of catalytically active sites by organic ***,taking[Au_(25)(PET)_(18)]-(PET=2-phenylethanethiol)nanocluster as a model catalyst,this work reports a feasible procedure to achieve the controllably partial removal of thiolate ligands from unsupported[Au_(25)(PET)_(18)]-nanoclusters with the preservation of the core *** procedure shortens the processing duration by rapid heating and cooling on the basis of traditional annealing treatment,avoiding the reconfiguration or agglomeration of Au_(25)nanoclusters,where the degree of dethiolation can be regulated by the control of *** work finds that a moderate degree of dethiolation can expose the Au active sites while maintaining the suppression of the competing hydrogen evolution ***,the activity and selectivity towards CO formation in electrochemical CO_(2)reduction reaction of Au_(25)nanoclusters can be *** work provides a new approach for the removal of thiolate ligands from atomically precise gold nanoclusters.

关键词： Gold nanoclusters Thiolates Ligand removal Electrochemically active surface area Electrochemical CO_(2)reduction

Applications of gold nanorods in biomedical imaging and related fields

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Chinese Science Bulletin 2013年第21期58卷 2530-2536页

作者： MA ZhiYa XIA HongXing liu yuping liu Bo CHEN Wei ZHAO YuanDi Britton Chance Center for Biomedical Photonics at Wuhan National Laboratory for Optoelectronics-Hubei Bioinformatis & Molecular Imaging Key Laboratory Department of Biomedical Engineering College of Life Science and Technology Huazhong University of Science and Technology

Gold nanorods (GNRs) have great potential widespread applications in biomedical imaging, drug delivery and photothermal therapy due to unique surface plasmon resonance (SPR) ranging from visible to near infrared (NIR) region, facile synthesis and easy functionalization. In this review, the recent progress of GNRs in bioimaging, drug delivery, photothermal therapy and theranostics is summarized and the recommendations for the future work on GNRs are also covered.

关键词：生物医学成像纳米棒应用表面等离子体共振金药物输送生物成像 NIR

Chemical Constituents of Pedicularis longiflora var. tubiformis (Orobanchaceae), a Common Hemiparasitic Medicinal Herb from the Qinghai Lake Basin, China

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Phyton-International Journal of Experimental Botany 2020年第4期89卷 1083-1090页

作者： Feng liu Zilan Ma Marcos ACaraballo-Ortiz Hui Zhang Xu Su yuping liu Key Laboratory of Medicinal Animal and Plant Resources of the Qinghai-Tibet Plateau in Qinghai Province School of Life ScienceQinghai Normal UniversityXining810008China Key Laboratory of Physical Geography and Environmental Process in Qinghai Province Qinghai Normal UniversityXining810008China Key Laboratory of Education Ministry of Earth Surface Processes and Ecological Conservation of the Qinghai-Tibet Plateau Qinghai Normal UniversityXining810008China Department of Botany National Museum of Natural HistorySmithsonian InstitutionWashington DC200013-7012USA Key Laboratory of Plant Molecular Physiology Institute of BotanyChinese Academy of SciencesBeijing100093China

Pedicularis longiflora ***(Orobanchaceae)is an abundant parasitic herb mainly found in the Xiaopohu wetland of the Qinghai Lake Basin in Northwestern *** species has an important local medicinal value,and in this study,we evaluated the chemical profile of its stems,leaves and seeds using mass *** samples of stems,leaves and seeds were grinded,weighted,and used for a series of extractions with an ultrasonic device at room *** chemical profiles for each tissue were determined using Gas Chromatography-Mass Spectrometry(GC-MS)and Liquid Chromatography-Mass Spectrometry(LC-MS).Twenty-seven amino acids and organic acids were identified and quantified from stems,leaves and *** content of amino acids detected in leaves and seeds was higher than the amount found in *** fla-vonoids were also detected,including isoorientin,orientin,luteolin-7-O-glucoside,luteolin,apigenin and *** concentrations of luteolin-7-O-glucoside,luteolin and tricin were the highest and more concentrated in leaves,while that of orientin was the lowest and mainly found in *** monosaccharides and oligosaccharides below tetramer were also examined,and our analyses detected the presence of arabitol,fructose,galacturonic acid,glucose,glucuronic acid,inositol,sucrose,and *** is the first study to identify and quantify the main components of amino acids,organic acids,flavonoids and soluble sugars from stems,leaves and seeds of *** *** of the amino acids detected are essential for humans,highlighting the medicinal importance of this *** shown here can be used as a reference case to develop future studies on the chemical constituents of Pedicularis herbs and other medicinal plants from the Tibetan region.

关键词： Amino acid content flavonoids gas chromatography-mass spectrometry(GC-MS) liquid chromatography-mass spectrometry(LC-MS) Qinghai-Tibet Plateau Tibetan medicine

In-situ constructing Cu_(1)Bi_(1)bimetallic catalyst to promote the electroreduction of CO_(2)to formate by synergistic electronic and geometric effects

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Journal of Energy Chemistry 2023年第4期79卷 263-271页

作者： Houan Ren Xiaoyu Wang Xiaomei Zhou Teng Wang yuping liu Cai Wang Qingxin Guan Wei Li College of Chemistry State Key Laboratory of Elemento-Organic ChemistryKey Laboratory of Advanced Energy Materials Chemistry(Ministry of Education)Nankai UniversityTianjin 300071China

Electrochemical CO_(2)reduction to formate is a potential approach to achieving global carbon ***,Cu1Bi1bimetallic catalyst was prepared by a co-precipitation *** has a ginger like composite structure(CuO/CuBi_(2)O_(4))and exhibited a high formate faradaic efficiency of 98.07%at–0.98 V and a large current density of–56.12 ***^(-2)at–1.28 V,which is twice as high as ***,high selectivity(FE^(–)_(HCOO)>85%)is maintained over a wide potential window of 500 ***-situ Raman measurements and structure characterization revealed that the reduced Cu1Bi1bimetallic catalyst possesses abundant Cu-Bi interfaces and residual Bi-O *** abundant Cu-Bi interface structures on the catalyst surface can provide abundant active sites for CO_(2)RR,while the Bi-O structures may stabilize the CO_(2)^(*–)*** synergistic effect of abundant Cu-Bi interfaces and Bi-O species promotes the efficient synthesis of formate by following the OCHO^(*)pathway.

关键词： CO_(2)electroreduction Bimetallic catalyst Formate Cu-Bi interfaces Bi-O structure