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Tuning the charge distribution and crystal field of iron single atoms via iron oxide integration for enhanced oxygen reduction reaction in zinc-air batteries

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Journal of Energy Chemistry 2023年第10期85卷 154-163,I0006页

作者： Feifei Zhang Yinlong Zhu Yijun Zhong Jing Zou yu Chen Lianhai Zu Zhouyou wang Jack Jon Hinsch yun wang Lian Zhang Zongping Shao Huanting wang Department of Chemical and Biological Engineering Monash UniversityClaytonVIC 3800Australia Institute for Frontier Science Nanjing University of Aeronautics and AstronauticsNanjing 210016JiangsuChina WA School of Mines:Minerals Energy and Chemical Engineering(WASM-MECE)Curtin UniversityPerthWA 6102Australia Key Laboratory of Interfacial Physics and Technology Shanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201800China Monash Centre for Electron Microscopy Monash UniversityClaytonVIC 3800Australia Department of Chemical Engineering The University of MelbourneParkvilleVIC 3010Australia Centre for Catalysis and Clean Energy School of Environment and ScienceGriffith UniversityGold Coast CampusSouthportQLD 4222Australia

Metal-air batteries face a great challenge in developing efficient and durable low-cost oxygen reduction reaction(ORR)***-atom iron catalysts embedded into nitrogen doped carbon(Fe-N-C)have emerged as attractive materials for potential replacement of Pt in ORR,but their catalytic performance was limited by the symmetrical electronic structure distribution around the single-atom Fe ***,we report our findings in significantly enhancing the ORR performance of Fe-N-C by moderate Fe_(2)O_(3) integration via the strong electronic ***,the optimized catalyst(M-Fe_(2)O_(3)/Fe_(sa)@NC)exhibits excellent activity,durability and good tolerance to methanol,outperforming the benchmark Pt/C *** M-Fe_(2)O_(3)/Fe_(sa)@NC catalyst was used in a practical zinc-air battery assembly,peak power density of 155 mW cm^(-2)and specific capacity of 762 mA h g_(Zn)^(-1)were achieved and the battery assembly has shown superior cycling stability over a period of 200 *** importantly,theoretical studies suggest that the introduction of Fe_(2)O_(3) can evoke the crystal field alteration and electron redistribution on single Fe atoms,which can break the symmetric charge distribution of Fe-N_(4) and thereby optimize the corresponding adsorption energy of intermediates to promote the O_(2)*** study provides a new pathway to promote the catalytic performance of single-atom catalysts.

关键词： Single-atom catalysts Oxide nanoclusters Electronic interactions Oxygen reduction reaction Zn-air battery

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Selective Hydrogenation of Maleic Anhydride to Succinic Anhydride over Nickel Catalyst Supported on Carbon Microspheres

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China Petroleum Processing & Petrochemical Technology 2021年第4期23卷 75-82页

作者： Zhou Yafen Chen Qilin wang Qing Song yu Zhou Limei Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province China West Normal UniversityNanchong 637002

The colloidal carbon microspheres(CMS)were prepared by the hydrothermal *** nickel catalysts supported on carbon microspheres(Ni/CMS)were further prepared and were characterized by the Fourier transform infrared spectroscopy(FTIR),the X-ray diffraction(XRD),the scanning electron microscopy(SEM),the transmission electron microscopy(TEM),and the N_(2)adsorption *** selective hydrogenation of maleic anhydride(MA)to succinic anhydride(sa)over the Ni/CMS catalysts was *** results indicated that the Ni/CMS catalyst,which was prepared with glucose as carbon source and calcined at 500℃,exhibited the best *** hydrogen pressure,reaction temperature,and reaction time could significantly affect the conversion of maleic anhydride during the hydrogenation reaction.A 98.4%conversion of MA and an 100%selectivity to sa were achieved over the Ni/CMS catalyst in acetic anhydride solvent under mild conditions covering a temperature of 90℃,a H2 pressure of 1.0 MPa,and a reaction time of 3 h.

关键词： carbon microsphere nickel catalyst hydrogenation maleic anhydride succinic anhydride

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基于BEMD的电力设备红外与可见光图像的配准研究

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电力系统保护与控制 2011年第23期39卷 25-29页

作者：赵振兵王琴余萍王飒飒华北电力大学电气与电子工程学院河北保定071003

电力设备的红外图像和可见光图像从不同角度反映了设备的状态,对它们进行配准可以提高在线监测的准确性。将2维经验模态分解(BEMD)方法引入到电力设备的红外与可见光图像配准中。通过理论分析得出了基于BEMD的图像配准原理,把图像的配... 详细信息

电力设备的红外图像和可见光图像从不同角度反映了设备的状态,对它们进行配准可以提高在线监测的准确性。将2维经验模态分解(BEMD)方法引入到电力设备的红外与可见光图像配准中。通过理论分析得出了基于BEMD的图像配准原理,把图像的配准问题转化成了BEMD分解后子图像的配准问题,并确定了原始图像、趋势图像及2维仿射变换在配准中的关系;基于此原理提出了一种红外与可见光图像配准方法。实验结果表明该方法可取得良好的配准效果,同时也验证了该配准原理的正确性和方法的先进性。

关键词： 2维经验模态分解图像配准红外图像可见光图像电力设备小波分解

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Transcriptome analysis reveals different response of resistant and susceptible rice varieties to rice stripe virus infection

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Journal of Integrative Agriculture 2023年第6期22卷 1750-1762页

作者： LIU yu LIU Wen-wen LI Li Frederic FRANCIS wang Xi-feng State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193P.R.China Functional&Evolutionary Entomology Gembloux Agro-BioTechUniversity of LiègeGembloux 5030Belgium

Rice stripe disease,caused by rice stripe virus (RSV) which is transmitted by small brown planthopper (SBPH,Laodelphax striatellus Fallen),resulted in serious losses to rice production during the last 2 *** on the molecular differences between resistant and susceptible rice varieties and the interaction between rice and RSV remains *** this study,RNA-Seq was used to analyze the transcriptomic differences between the resistant and susceptible rice varieties at different times post RSV *** Gene Ontology (GO) annotation,the differentially expressed genes (DEGs) related to transcription factors,peroxidases,and kinases of 2 varieties at 3 time points were *** these 2 varieties,the DEGs associated with these 3 GOs were numerically less in the resistant variety than in the susceptible variety,but the expression showed a significant up-or down-regulation trend under the conditions of|log_2(Fold change)|>0&P_(adj)same for 2 varieties,but that mediated by salicylic acid (sa) and jasmonic acid (JA)/ethylene (ET) were *** DEGs in resistant and susceptible varieties at the 3 time points were identified in both PAMP-triggered immunity (PTI) and Effector proteintriggered immunity (ETI),with that most of the unigenes of the susceptible variety were involved in PTI,whereas most of the unigenes of the resistant variety were involved in *** results revealed the different responses of resistant and susceptible varieties in the transcription level to RSV infection.

关键词： transcriptomics resistance susceptibility rice stripe virus(RSV) infection

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Passively Q-switched self-frequency doubling Nd3+:ReCa4O（BO3）3（Re=Y,Gd） lasers with tin diselenide as a saturable absorber

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Chinese Optics Letters 2019年第6期17卷 45-48页

作者： yuxiang Sun Mengxia wang Xinle wang Ying Zhou Bo wang Zhengping wang Fapeng yu Xinguang Xu State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100China Key Laboratory of Functional Crystal Materials and Device (Shandong University) Ministry of EducationJinan 250100China

With tin diselenide(SnSe2)film as a saturable absorber(sa),the passively Q-switched self-frequency doubling(SFD)lasers were realized in Nd^3+:ReCa4O(BO3)3(Re=Y,Gd)*** Nd:YCa4O(BO3)3 crystal,the maximum average output power at 532 nm was 19.6 mW,and the corresponding pulse repetition frequency,pulse duration,single pulse energy,and peak power were 17.6 kHz,91.9 ns,1.1μJ,and 12.1 W,*** Nd:GdCa4 O(BO3)3 crystal,these values were 14.5 mW,22.1 kHz,48.7 ns,0.66μJ,and 13.5 W.

关键词： With tin diselenide the passively Q-switched ,0.66μJ,and 13.5 W.

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Tuning electronic structure of RuO_(2)by single atom Zn and oxygen vacancies to boost oxygen evolution reaction in acidic medium

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Journal of Energy Chemistry 2024年第1期88卷 94-102,I0003页

作者： Qing Qin Tiantian wang Zijian Li Guolin Zhang Haeseong Jang Liqiang Hou yu wang Min Gyu Kim Shangguo Liu Xien Liu College of Chemical Engineering Qingdao University of Science and TechnologyQingdao 266042ShandongChina Department of Chemistry City University of Hong KongHong Kong 999077China Department of Advanced Materials Engineering Chung-Ang UniversityAnseong-siGyeonggi-do 17546SeoulRepublic of Korea Beamline Research Division Pohang Accelerator Laboratory(PAL)Pohang 37673Gyeongsangbuk-doRepublic of Korea

The poor stability of RuO_(2)electrocatalysts has been the primary obstacles for their practical application in polymer electrolyte membrane *** dramatically enhance the durability of RuO_(2)to construct activity-stability trade-off model is full of significance but ***,a single atom Zn stabilized RuO_(2)with enriched oxygen vacancies(sa Zn-RuO_(2))is developed as a promising alternative to iridium oxide for acidic oxygen evolution reaction(OER).Compared with commercial RuO_(2),the enhanced Ru–O bond strength of sa Zn-RuO_(2)by forming Zn-O-Ru local structure motif is favorable to stabilize surface Ru,while the electrons transferred from Zn single atoms to adjacent Ru atoms protects the Ru active sites from ***,the optimized surrounding electronic structure of Ru sites in sa ZnRuO_(2)decreases the adsorption energies of OER intermediates to reduce the reaction *** a result,the representative sa Zn-RuO_(2)exhibits a low overpotential of 210 mV to achieve 10 mA cm^(-2)and a greatly enhanced durability than commercial RuO_(2).This work provides a promising dual-engineering strategy by coupling single atom doping and vacancy for the tradeoff of high activity and catalytic stability toward acidic OER.

关键词： Electrocatalyst Acidic oxygen evolution reaction Electronic structure engineering Durability Reaction barrier

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Carbon Monoxide： A Novel Antioxidant Against Oxidative Stress in Wheat Seedling Leaves

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Journal of Integrative Plant Biology 2007年第5期49卷 638-645页

作者： Zhi-Sheng sa Li-Qin Huang Guo-Lin Wu Jin-Peng Ding Xiao-yue Chen Tian yu Ci Shi Wen-Biao Shen College of Life Sciences Life Science Laboratory Center Nanjing Agricultural University Nanjing 210095 China College of Sciences Nanjing Agricultural University Nanjing 210095 China

Carbon monoxide （CO）, an endogenous signaling molecule in animals, also provides potent cytoprotective effects including attenuation of lung lipid peroxidation induced by oxidant in the mouse. Our recent work demonstrated that 0.01 μmol/L hematin （a CO donor） treatment of wheat plants alleviated salt-induced oxidative damage in seedling leaves. In this report, we further discovered that hematin pretreatment （≤ 0.1 μmol/L） could delay wheat leaf chlorophyll loss mediated by further treatment of H202 and paraquat, two reactive oxygen species （ROS） sources, in dose-and even time-dependent manners. Also, compared with the control samples, seedling leaves pretreated with 0.01 or 0.1 μmol/L hematin for 24 h exhibited lower levels of H2O2 and lipid peroxidation, as well as higher contents of chlorophyll and activities of antioxidant enzymes. Such beneficial effects exerted by hematin were mimicked by the pretreatment of antioxidant butylated hydroxytoluene （BHT）, and differentially reversed when CO scavenger hemoglobin （Hb）, or CO specific synthetic inhibitor ZnPPIX was added, respectively. Taken together, the results presented In this paper directly illustrate for the first time that CO is able to strongly protect plants from oxidative damage caused by the overproduction of ROS, and strengthens the evidence that CO is a potent antioxidant in various abiotic and biotic stresses, as similar results have been shown in animal tissues.

关键词： antioxidant carbon monoxide chlorophyll loss hydrogen peroxide oxidative stress paraquat wheat

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Dietary Iodine Intake in the Chinese Population

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Biomedical and Environmental Sciences 2011年第6期24卷 617-623页

作者： SUI Hai Xia LI Jian Wen MAO Wei Feng ZHU Jiang Hui HE yu Na SONG Xiao yu MA Ning ZHANG Lei LIU sa Na LIU Zhao Ping LI Feng Qin National Institute of Nutrition and Food safety China CDC Beijing 100021 China

Objective To evaluate dietary iodine intake and its potential risks among the Chinese population Methods Individual dietary iodine intake was calculated using food consumption data multiplying by iodine concentration in foods, table salt and drinking water, followed by summing, and then compared with the corresponding age-specific reference values, including Upper Intake Level （UL） and Recommended Nutrient Intake （RNI）. Results In areas with water iodine concentration （Wl） lower than 150 ug/L, 80.8% of residents had iodine intake between the RNI and UL, 5.8% higher than UL, and the remaining （13.4%） lower than RNI if iodized salt was consumed. However, in the uniodized salt consumption scenario, only 1.0% of residents between RNI and UL, 1.4% higher than UL, and a large part of residents （97.6%） lower than RNI. In areas with Wl higher than 150 ug/L ,all residents had iodine intake between RNI and UL if iodized salt was consumed, except 10.5% and 24.9% of residents higher than UL in areas with Wl at 150-300 ug/L and higher than 300 ug/L respectively. However, in the uniodized salt consumption scenario, only 1.5% and 1.7% of residents had higher iodine intake than UL respectively. Conclusion The findings suggested that in general, the dietary iodine intake by the Chinese population was appropriate and safe at the present stage. People in areas with WI lower than 150 ug/L were more likely to have iodine deficiency. While people in areas with WI higher than 150 ug/L were more likely to have excessive iodine intake if iodized salt was consumed.

关键词： Iodine Exposure assessment Drinking water Iodine Dietary Iodine Intake

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Carbon Monoxide Alleviates Wheat Seed Germination Inhibition and Counteracts Lipid Peroxidation Mediated by salinity

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Journal of Integrative Plant Biology 2006年第10期48卷 1168-1176页

作者： Sheng Xu Zhi-Sheng sa Ze-yu Cao Wei Xuan Ben-Kai Huang Teng-Fang Ling Qiong-Ying Hu Wen-Biao Shen College of Life Sciences Laboratory Centre of Life Sciences Nanjing Agricultural University Nanjing 210095 China

Recently In animals, endogenous carbon monoxide （CO）, like nitric oxlde, was implicated as another Important physiological messenger or bioactive molecule. However, little information is known about the physlologlcal roles of CO in the whole plant. In the present study, we report that different concentrations of the 130 donor hematin （0.1, 1.0 and 10.0 μmol/L） alleviated wheat （Tilticum aestivum L. Yangmai 158） seed germination Inhlbltlon caused by 250 mmol/L NaCI stress In a dose-dependent manner. These responses were also proved by the addltion of different gaseous CO aqueous solutions from 0.1% to 100.0% of saturation. Among these treatments, the effect of 1.0 μmol/L hematin and 1.0% saturation of CO aqueous solution were the most obvlous. Furthermore, compared with non-hematin treatment, the degradation of storage reserves In wheat seeds was also accelerated. Time-course analyses showed that application of hematln dose-dependently Increased the activities of superoxide dismutase, catalase, ascorbate peroxidase, and guaiacol peroxidase activities, thus decreasing the lipid peroxidation In germinating wheat seed subjected to salt stress. Meanwhile, the responses of hematin were specific for CO because the addition of the CO scavenger hemoglobln （0.2 g/L） blocked the various actions of 1.0 μmol/L hematin. Taken together, the results of the present study demonstrate that CO, at a low concentration, is able to attenuate the seed germlnation Inhibition produced by salinity stress and counteract the lipid peroxidation in germinating wheat seeds.

关键词： carbon monoxide lipid peroxidation salt stress seed germination storage reserve degradation wheat

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Systemic acquired resistance, NPR1, and pathogenesis-related genes in wheat and barley

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Journal of Integrative Agriculture 2018年第11期17卷 2468-2477页

作者： wang Xiao-dong BI Wei-shuai GAO Jing yu Xiu-mei wang Hai-yan LIU Da-qun College of Plant Protection/Biological Control Center for Plant Diseases and Plant Pests of Hebei Hebei Agricultural University Baoding 071000 P.R.China College of Life Sciences Hebei Agricultural University Baoding 071000 P.R.China Graduate School of Chinese Academy of Agricultural Sciences Beijing 100081 P.R.China

In Arabidopsis, systemic acquired resistance （saR） is established beyond the initial infection by a pathogen or is directly induced by treatment with salicylic acid （sa） or its functional analogs, 2,6-dichloroisonicotinic acid （INA） and benzothiadiazole （BTH）. NPR1 protein is considered the master regulator of saR in both sa signal sensing and transduction. In wheat （Triticum aesfivum） and barley （Hordeum vulgare）, both pathogen infection and BTH treatment can induce broad-spectrum resistance to various diseases, including powdery mildew, leaf rust, Fusarium head blight, etc. However, three different types of saR-like responses including acquired resistance （AR）, systemic immunity （SI）, and BTH-induced resistance （BIR） seem to be achieved by activating different gene pathways. Recent research on wheat and barley NPR1 homologs in AR and SI has provided the initial clue for understanding the mechanism of saR in these two plant species. In this review, the specific features ofAR, Si, and BIR in wheat and barley were summarized and compared with that of saR in model plants of Arabidopsis and rice. Research updates on downstream genes of saR, including pathogenesis-related （PR） and BTH-induced genes, were highlighted.

关键词： systemic acquired resistance NPR1 pathogenesis-related genes wheat barley

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