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Vertically aligned Ni/NiO nanocomposites with abundant oxygen deficient hetero-interfaces for enhanced overall water splitting

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Science China Chemistry 2022年第10期65卷 1885-1894页

作者： Hongxia Wang meiyan Cui Gaoliang Fu Jiaye Zhang Xingyu Ding Irene Azaceta matthew Bugnet demie m.kepaptsoglou Vlado K.Lazarov Victor Ade la Peña O’Shea Freddy E.Oropeza Kelvin H.L.Zhang State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Henan Provincial Key Laboratory of Nanocomposites and Applications Institute of Nanostructured Functional MaterialsHuanghe Science and Technology CollegeZhengzhou 450006China Department of Physics University of YorkHeslingtonYorkYO105DDUK SuperSTEm Laboratory SciTech Daresbury CampusDaresbury WA44ADUK School of Chemical and Process Engineering Univeristy of LeedsLeeds LS29JTUK Univ Lyon CNRSINSA LyonUCBLMATEISUMR 551069621 VilleurbanneFrance Photoactivated Processes Unit IMDEA Energy InstituteParque Tecnológico de MóstolesAvda.Ramón de la Sagra 328935 MóstolesMadridSpain

The design of heterostructured transition metal-based electrocatalysts with controlled composition and interfaces is key to increasing the efficiency of the water electrolysis and the elucidation of reaction mechanisms.In this work,we report the synthesis of well-controlled vertically aligned Ni/NiO nanocomposites consisting of Ni nanoclusters embedded in NiO,which result in highly efficient electrocatalysts for overall water splitting.We show that such a high catalytic efficiency toward both the hydrogen evolution reaction(HER)and the oxygen evolution reaction(OER)originates from a synergetic effect at Ni/NiO interfaces that significantly reduces the energy barrier for water dissociation,and favours the formation of reactive H*intermediates on the Ni side of the interface,and OH_(ads) on the NiO side of the interface.A study of water chemisorption based on near-ambient pressure photoelectron spectroscopy indicates that the abundant hetero-interfaces in Ni/NiO nanocomposite promote the dissociation of water with a three-fold increase in the surface concentration of OH_(ads) compared with pure NiO.Density functional theory calculations indicate that Ni/NiO interface leads to the reduction of the water dissociation energy barrier due to a high concentration of oxygen vacancies at NiO side of the interface,whereas the formation of highly active metallic Ni sites with an optimal value of Gibbs free energy of H*(ΔG_(H*)=−0.16 eV)owes to a favourable adjustment of the electron energetics at the interface,thus accelerating the overall electrochemical water splitting.

关键词： water splitting hydrogen evolution reaction electronic structure heterostructure vertically aligned nanocomposites

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Genomic and transcriptomic analysis unveils population evolution and development of pesticide resistance in fall armyworm Spodoptera frugiperda

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Protein & Cell 2022年第7期13卷 513-531页

作者： Furong Gui Tianming Lan Yue Zhao Wei Guo Yang Dong Dongming Fang Huan Liu Haimeng Li Hongli Wang Ruoshi Hao Xiaofang Cheng Yahong Li Pengcheng Yang Sunil Kumar Sahu Yaping Chen Le Cheng Shuqi He Ping Liu Guangyi Fan Haorong Lu Guohai Hu Wei Dong Bin Chen Yuan Jiang Yongwei Zhang Hanhong Xu Fei Lin Bernard Slippers Alisa Postma matthew Jackson Birhan Addisie Abate Kassahun Tesfaye Aschalew Lemma demie meseret Destaw Bayeleygne Dawit Tesfaye Degefu Feng Chen Paul K.Kuria Zachary m.Kinyua Tong-Xian Liu Huanming Yang Fangneng Huang Xin Liu Jun Sheng Le Kang State Key Laboratory for Conservation and Utilization of Bioresources in Yunnan Yunnan Agricultural UniversityKunming 650201China State Key Laboratory of Agricultural Genomics BGI-ShenzhenShenzhen 518083China State Key Laboratory of Integrated management of Pest Insects and Rodents Institute of ZoologyChinese Academy of SciencesBeijing 100101China Beijing Institutes of Life Science Chinese Academy of SciencesBeijing 100101China mGI BGI-ShenzhenShenzhen 518083China BGI-Qingdao BGI-ShenzhenQingdao 266555China BGI-Yunnan No.389 Haiyuan RoadHigh-tech Development ZoneKunming 650106China China National GeneBank Jinsha RoadDapeng New DistrictShenzhen 518120China Department of Biology University of Copenhagen2100 CopenhagenDenmark Guangdong Provincial Key Laboratory of Genome Read and Write BGI-ShenzhenShenzhen 518120China Guangdong Provincial Academician Workstation of BGI Synthetic Genomics BGI-ShenzhenShenzhen 518120China Yunnan Plateau Characteristic Agriculture Industry Research Institute Kunming 650201China College of Plant Health and medicine Qingdao Agricultural UniversityQingdao 266109China Department of Entomology Louisiana State University Agricultural CenterBaton RougeLA 70803USA CAS Center for Excellence in Biotic Interactions University of Chinese Academy of SciencesBeijing 100101China Yunnan Plant Protection and Quarantine Station Kunming 650034China State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources South China Agricultural UniversityGuangzhou 510642China BGI-Americas One Broadway14th FloorCambridgeMA 02142USA Departme nt of Biochemistry Gen etics and MicrobiologyForestry and Agricultural Biotech no logy InstituteUn iversity of PretoriaPretoriaSouth Africa Ethiopian Biotechnology Institute Addis AbabaEthiopia College of Natural Science Addis Ababa UniversityAddis AbabaEthiopia melkassa Agricultural Research Center Ethiopian Institute of Agricultural ResearchMelkassaAddis AbabaEthiopia Kenya Agricultural and Livestock Res

The fall armyworm(FAW),Spodoptera frugiperda,is a destructive pest native to America and has recently become an invasive insect pest in China.Because of its rapid spread and great risks in China,understanding of FAW genetic background and pesticide resistance is urgent and essential to develop effective management strategies.Here,we assembled a chromosome-level genome of a male FAW(SFynmstLFR)and compared re-sequencing results of the populations from America,Africa,and China.Strain identification of 163 individuals collected from America,Africa and China showed that both C and R strains were found in the American pop-ulations,while only C strain was found in the Chinese and African populations.moreover,population geno-mics analysis showed that populations from Africa and China have close relationship with significantly genetic differentiation from American populations.Taken toge-ther,FAWs invaded into China were most likely origi-nated from Africa.Comparative genomics analysis displayed that the cytochrome p450 gene family is extremely expanded to 425 members in FAW,of which 283 genes are specific to FAW.Treatments of Chinese populations with twenty-three pesticides showed the variant patterns of transcriptome profiles,and several detoxification genes such as AOX,UGT and GST spe-cially responded to the pesticides.These findings will be useful in developing effective strategies for manage-ment of FAW in China and other invaded areas.

关键词： Spodoptera frugiperda chromosome-level genome population differentiation cytochrome p450 pesticides

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