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Molecular Plant 2013年第2期6卷 559-569页

作者： maria magdalena drerup Kathrin Schlückinga Kenji Hashimoto Prabha Manishankar Leonie Steinhorst Kazuyuki Kuchitsu Jōrg Kudl Institut for Biologie und Biotechnologie der Pflanzen Universitāt Münster Schlossplatz 4 48149 MOnster Germany Department of Applied Biological Science Tokyo University of Science Noda Chiba 278-8510 Japan

Stimulus-specific accumulation of second messengers like reactive oxygen species （ROS） and Ca^＋ are central to many signaling and regulation processes in plants. However, mechanisms that govern the reciprocal interrelation of Ca^＋ and ROS signaling are only beginning to emerge. NADPH oxidases of the respiratory burst oxidase homolog （RBOH） family are critical components contributing to the generation of ROS while Calcineurin B-like （CBL） Ca^＋ sensor proteins together with their interacting kinases （CIPKs） have been shown to function in many Ca^＋- signaling processes. In this study, we identify direct functional interactions between both signaling systems. We report that the CBL-interacting pro- tein kinase ClPK26 specifically interacts with the N-terminal domain of RBOHF in yeast two-hybrid analyses and with the full-length RBOHF protein in plant cells. In addition, CIPK26 phosphorylates RBOHF in vitro and co-expression of either CBL1 or CBL9 with CIPK26 strongly enhances ROS production by RBOHF in HEK293T cells. Together, these findings identify a direct interconnection between CBL-ClPK-mediated Ca^＋ signaling and ROS signaling in plants and provide evidence for a synergistic activation of the NADPH oxidase RBOHF by direct Ca^＋-binding to its EF-hands and Ca2＋-induced phospho-rylation by CBL1/9-ClPK26 complexes.

关键词： Calcium ROS CBL CIPK NADPH oxidase RBOH signal transduction.

Achieving highly selective electrochemical CO_(2) reduction to C_(2)H_(4) on Cu nanosheets

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Journal of Energy Chemistry 2023年第4期79卷 312-320页

作者： Huan Xie Ruikuan Xie Zhiyuan Zhang Yongyu Pang Yuting Luo Jiong Li Bilu Liu maria-magdalena Titirici Guoliang Chai State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002FujianChina Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and MaterialsCollege of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037JiangsuChina Shenzhen Geim Graphene Center(SGC) Tsinghua-Berkeley Shenzhen Institute(TBSI)and Tsinghua Shenzhen International Graduate School(TSIGS)Tsinghua UniversityShenzhen 518055GuangdongChina School of Chemical Science University of Chinese Academy of SciencesBeijing 100049China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai 201210China Department of Chemical Engineering Imperial College LondonSW72AZUK

The conversion of CO_(2)into value-added chemicals coupled with the storage of intermittent renewable electricity is *** nanosheets with an average size and thickness of~30 and~20 nm have been developed,which are in situ reduced into Cu nanosheets during electrochemical CO_(2)reduction reaction(ECO_(2)RR).The derived Cu nanosheets demonstrate much higher selectivity for C2H4production than commercial CuO derived Cu powder,with an optimum Faradaic efficiency of 56.2%and a partial current density of C_(2)H_(4)as large as 171.0 mA cm^(-2)in a gas diffusion flow *** operando attenuated total reflectance-Fourier transform infrared spectra measurements and density functional theory simulations illustrate that the high activity and selectivity of Cu nanosheets originate from the edge sites on Cu nanosheets with a coordinate number around 5(4–6),which facilitates the formation of^(*)CHO rather than^(*)COH intermediate,meanwhile boosting the C-C coupling reaction of^(*)CO and^(*)CHO intermediates,which are the critical steps for C_(2)H_(4)formation.

关键词： Electrochemical CO_(2)reduction Cu nanosheets C_(2)H_(4) High selectivity Coordination number

Emerging role of the gut microbiome in post-infectious irritable bowel syndrome:A literature review

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World Journal of Gastroenterology 2023年第21期29卷 3241-3256页

作者： Vasile Valeriu Lupu Cristina Mihaela Ghiciuc Gabriela Stefanescu Cristina maria Mihai Alina Popp maria Oana Sasaran Laura Bozomitu Iuliana magdalena Starcea Anca Adam Raileanu Ancuta Lupu Faculty of General Medicine “Grigore T.Popa”University of Medicine and PharmacyIasi 700115Romania Faculty of General Medicine Ovidius UniversityConstanta 900470Romania Faculty of General Medicine “Carol Davila”University of Medicine and PharmacyBucharest 020021Romania Faculty of General Medicine “George Emil Palade”University of MedicinePharmacyScience and TechnologyTargu Mures 540142Romania

Post-infectious irritable bowel syndrome(PI-IBS)is a particular type of IBS,with symptom onset after an acute episode of infectious *** infectious disease resolution and clearance of the inciting pathogen agent,10%of patients will develop *** susceptible individuals,the exposure to pathogenic organisms leads to a marked shift in the gut microbiota with prolonged changes in host-microbiota *** changes can affect the gut-brain axis and the visceral sensitivity,disrupting the intestinal barrier,altering neuromuscular function,triggering persistent low inflammation,and sustaining the onset of IBS *** is no specific treatment strategy for *** drug classes can be used to treat PI-IBS similar to patients with IBS in general,guided by their clinical *** review summarizes the current evidence for microbial dysbiosis in PI-IBS and analyzes the available data regarding the role of the microbiome in mediating the central and peripheral dysfunctions that lead to IBS *** also discusses the current state of evidence on therapies targeting the microbiome in the management of *** results of microbial modulation strategies used in relieving IBS symptomatology are *** studies on PI-IBS animal models reported promising ***,published data that describe the efficacy and safety of microbial targeted therapy in PI-IBS patients are *** research is required.

关键词： Gut microbiome Infectious gastroenteritis Irritable bowel syndrome Post infection syndrome Pathophysiology Inflammation

A review of nanocarbons in energy electrocatalysis: Multifunctional substrates and highly active sites

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Journal of Energy Chemistry 2017年第6期26卷 1077-1093页

作者： Cheng Tang maria-magdalena Titirici Qiang Zhang Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical Engineering Tsinghua University Queen Mary University of London School of Engineering and Materials Science

Nanocarbons are of progressively increasing importance in energy electrocatalysis, including oxygen reduction, oxygen evolution, hydrogen evolution, COreduction, etc. Precious-metal-free or metal-free nanocarbon-based electrocatalysts have been revealed to potentially have effective activity and remarkable durability, which is promising to replace precious metals in some important energy technologies,such as fuel cells, metal–air batteries, and water splitting. In this review, rather than overviewing recent progress completely, we aim to give an in-depth digestion of present achievements, focusing on the different roles of nanocarbons and material design principles. The multifunctionalities of nanocarbon substrates(accelerating the electron and mass transport, regulating the incorporation of active components,manipulating electron structures, generating confinement effects, assembly into 3 D free-standing electrodes) and the intrinsic activity of nanocarbon catalysts(multi-heteroatom doping, hierarchical structure,topological defects) are discussed systematically, with perspectives on the further research in this rising research field. This review is inspiring for more insights and methodical research in mechanism understanding, material design, and device optimization, leading to a targeted and high-efficiency development of energy electrocatalysis.

关键词： Nanocarbon Energy electrocatalysis Oxygen reduction Oxygen evolution Hydrogen evolution CO_2 reduction Electron structure Strong coupling effect Hierarchical structure Doping Defect Metal–air battery Fuel cell Water splitting

Achieving high initial Coulombic efficiency for competent Na storage by microstructure tailoring from chiral nematic nanocrystalline cellulose

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Carbon Energy 2022年第5期4卷 914-923页

作者： Fei Xie Zhen Xu Zhenyu Guo Anders CSJensen Jingyu Feng Hui Luo Feixiang Ding Yaxiang Lu Yong-Sheng Hu maria-magdalena Titirici Key Laboratory for Renewable Energy Beijing Key Laboratory for New Energy Materials and DevicesBeijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijingChina Department of Chemical Engineering Imperial College LondonLondonUK School of Physical and Chemical Sciences Queen Mary University of LondonLondonUK Huairou Division Institute of PhysicsChinese Academy of SciencesBeijingChina Yangtze River Delta Physics Research Center Co. Ltd.LiyangChina College of Materials Science and Optoelectronics Technology University of Chinese Academy of SciencesBeijingChina

Although it has been proven that porous,heteroatomic,and defective structures improve Na storage performance,they also severely affect the initial Coulombic efficiency(ICE)due to the huge irreversible capacity in the first cycle,which always limits the practical application of carbon anodes in commercial Na-ion batteries(NIBs).Here,we show the successful synthesis of nanocrystalline cellulose and the derivative hard carbons.A series of treatments including acid hydrolysis,hydrothermal carbonization,and hightemperature pyrolysis help tune the pores,heteroatoms,and defects to achieve an optimized balance between superior ICE and reversible capacity of up to 90.4%and 314 mAh g^(−1).This study highlights that tailoring the electrode microstructure could be an important strategy in the future design of carbonaceous anode materials for high-performance Na-ion batteries.

关键词： hard carbon microstructure Na storage nanocrystalline cellulose

Hard carbon derived from rice husk as low cost negative electrodes in Na-ion batteries

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Journal of Energy Chemistry 2019年第2期28卷 17-22页

作者： maria K.Rybarczyk Yunming Li Mo Qiao Yong-Sheng Hu maria-magdalena Titirici Marek Lieder Gdansk University of Technology Chemical Faculty Key Laboratory for Renewable Energy Beijing Key Laboratory for New Energy Materials and DevicesNational Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of Sciences Queen Mary University London School of Materials Science & Engineering

Here,we report the synthesis of hard carbon materials(RH) made from natural rice husk through a single pyrolysis process and their application as an anode in sodium-ion *** studies show that the electrochemical properties of RHs are affected by the treatment temperatures,which determine the materials morphology,in particular,their degree of graphitization and extent of continuous channels(nanovoids).The latter are accessible to sodium ions and significantly contribute to charge storage capacity of the produced *** RHs obtained at 1600 °C deliver the highest reversible capacity of276 mAh g^(-1) mainly due to insertion of sodium ions into the *** work deepens the basic understanding of the influence of the carbonization temperature on the sodium storage mechanism.

关键词： Nanovoids in rice husk Sustainable energy storage Na-ion batteries

Polar interaction of polymer host-solvent enables stable solid electrolyte interphase in composite lithium metal anodes

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Journal of Energy Chemistry 2022年第1期31卷 172-178,I0006页

作者： Peng Shi Ze-Yu Liu Xue-Qiang Zhang Xiang Chen Nan Yao Jin Xie Cheng-Bin Jin Ying-Xin Zhan Gang Ye Jia-Qi Huang Stephens IfanE L Titirici maria-magdalena Qiang Zhang Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China Collaborative Innovation Center of Advanced Nuclear Energy Technology Institute of Nuclear and New Energy TechnologyTsinghua UniversityBeijing 100084China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China Shanxi Research Institute for Clean Energy Tsinghua UniversityTaiyuan 030032ShanxiChina Department of Materials Molecular Sciences Research HubImperial College LondonLondon W12 OBZUK epartment of Chemical Engineering Imperial College LondonSouth Kensington CampusLondon SW72AZUK

The lithium(Li) metal anode is an integral component in an emerging high-energy-density rechargeable battery.A composite Li anode with a three-dimensional(3 D) host exhibits unique advantages in suppressing Li dendrites and maintaining dimensional ***,the fundamental understanding and regulation of solid electrolyte interphase(SEI),which directly dictates the behavior of Li plating/stripping,are rarely researched in composite Li metal ***,the interaction between a polar polymer host and solvent molecules was proposed as an emerging but effective strategy to enable a stable SEI and a uniform Li deposition in a working *** carbonate molecules in electrolytes are enriched in the vicinity of a polar polyacrylonitrile(PAN) host due to a strong dipole-dipole interaction,resulting in a LiF-rich SEI on Li metal to improve the uniformity of Li deposition.A composite Li anode with a PAN host delivers 145 cycles compared with 90 cycles when a non-polar host is ***,60 cycles are demonstrated in a 1:0 Ah pouch cell without external *** work provides a fresh guidance for designing practical composite Li anodes by unraveling the vital role of the synergy between a 3 D host and solvent molecules for regulating a robust SEI.

关键词： Lithium metal Polar interaction Solid electrolyte interphase Lithium plating Composite anode

Sulphur-doped ordered mesoporous carbon with enhanced electrocatalytic activity for the oxygen reduction reaction

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Journal of Energy Chemistry 2016年第4期25卷 566-570页

作者： Liping Wang Weishang Jia Xiaofeng Liu Jingze Li maria magdalena Titirici State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China School of Materials Science and Engineering Zhejiang University School of Materials Science and Engineering Queen Mary University of London Materials Research Institute Queen Mary University of London

Metal-free, heteroatom functionalized carbon-based catalysts have made remarkable progress in recent years in a wide range of applications related to energy storage and energy generation. In this study, high surface area mesoporous ordered sulphur doped carbon materials are obtained via one-pot hydrothermal synthesis of carbon/SBA-15 composite after removal of in-situ synthesized hard template SiO2. 2-thiophenecarboxy acid as sulphur source gives rise to sulphur doping level of 5.5 wt%. Comparing with pristine carbon, the sulphur doped mesoporous ordered carbon demonstrates improved electro-catalytic activity in the oxygen reduction reaction in alkaline solution. (C) 2016 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.

关键词： Mesoporous ordered carbon Oxygen reduction reaction Electrocatalyst Heteroatom doping In-situ synthesis

Disordered carbon anodes for Na-ion batteries—quo vadis?

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Science China Chemistry 2021年第10期64卷 1679-1692页

作者： Fei Xie Zhen Xu Zhenyu Guo Yaxiang Lu Liquan Chen maria-magdalena Titirici Yong-Sheng Hu Key Laboratory for Renewable Energy Beijing Key Laboratory for New Energy Materials and DevicesBeijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing 100190China Department of Chemical Engineering Imperial College LondonLondon SW72AZUK

Na-ion batteries(NIBs)are gradually attracting much attention as an alternative to lead-acid batteries and supplement to Li-ion batteries(LIBs)owing to the abundant Na resources and excellent *** the most commonly used graphite as an anode material in LIBs cannot be inherently used in NIBs,tremendous efforts have been made to advance the fundamental understanding and design of suitable anode materials for NIBs,including the improvement of Na storage capacity and the study on Na storage *** to all these studies,disordered carbons are now the most promising anode candidates for *** this review,we discuss the current challenges and remaining problems to be solved in the area of disordered carbon anode materials for NIBs and provide future insights and research directions.

关键词： disordered carbon anode Na-ion batteries

Bio-inspired carbon electro-catalysts for the oxygen reduction reaction

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Journal of Energy Chemistry 2016年第2期25卷 226-233页

作者： Kathrin Preuss Vasanth Kumar Kannuchamy Adam Marinovic Mark Isaacs Karen Wilson Isaac Abrahams maria-magdalena Titirici School of Engineering and Materials Science Queen Mary University of London Materials Research Institute Queen Mary University of London European Bioenergy Research Institute Aston University School of Biological and Chemical Sciences Queen Mary University of London

We report the synthesis, characterisation and catalytic performance of two nature-inspired biomassderived electro-catalysts for the oxygen reduction reaction in fuel cells. The catalysts were prepared via pyrolysis of a real food waste（lobster shells） or by mimicking the composition of lobster shells using chitin and CaCO3 particles followed by acid washing. The simplified model of artificial lobster was prepared for better reproducibility. The calcium carbonate in both samples acts as a pore agent, creating increased surface area and pore volume, though considerably higher in artificial lobster samples due to the better homogeneity of the components. Various characterisation techniques revealed the presence of a considerable amount of hydroxyapatite left in the real lobster samples after acid washing and a low content of carbon（23%）, nitrogen and sulphur（〈1%）, limiting the surface area to 23 m^2/g, and consequently resulting in rather poor catalytic activity. However, artificial lobster samples, with a surface area of ≈200 m^2/g and a nitrogen doping of 2%, showed a promising onset potential, very similar to a commercially available platinum catalyst, with better methanol tolerance, though with lower stability in long time testing over 10,000 s.

关键词： Carbonisation Biomass-derived carbons Oxygen reduction reaction Fuel cells Electro-catalysis