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revealing interfacial ch.r.e redistribution of homologous ru-ruS_(2) heterostructure toward robust hydrogen oxidation reaction

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Journal of Energy Chemistry 2024年第7期94卷 332-339页

作者： Yi Liu Lianrui Cheng Shuqing Zhou Yuting Yang Chenggong Niu Tayirjan taylor Isimjan Bao Wang Xiulin Yang Guangxi Key Laboratory of Low Carbon Energy Materials School of Chemistry and Pharmaceutical SciencesGuangxi Normal UniversityGuilin 541004GuangxiChina State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China Saudi Arabia Basic Industries Corporation(SABIC)at King Abdullah University of Science and Technology(KAUST) Thuwal 23955-6900Saudi Arabia

Precisely tailoring the surface electronic structures of electrocatalysts for optimal hydrogen binding energy and hydroxide binding energy is vital to improve the sluggish kinetics of hydrogen oxidation reac-tion(h.r..h.r.in,we employ a partial desulfurization strategy to construct a homologous ru-ruS_(2) heterostructure anch.r.d on hollow mesoporous carbon nanosph.r.s(ru-ruS_(2)@C).The disparate work functions of the heterostructure contribute to the spontaneous formation of a unique built-in electric field,accelerating ch.r.e transfer and boosting conductivity of ***,ru-ruS_(2)@C exhibits robust h.r.electrocatalytic activity,achieving an exchange current density and mass activity as high as 3.56 mA cm^(-2) and 2.13 mAμg_(ru)^(-1),*** those of state-of-the-art Pt/C and most contemporary ru-based h.r.***,ru-ruS_(2)@C can tolerate 1000 ppm of cO that lacks in Pt/*** analysis reveals that the directional electron transfer across ru-ruS_(2) heterointerface induces local ch.r.e redistribution in interfacial region,which optimizes and balances the adsorption energies of h and Oh species,as well as lowers the energy barrier for water formation,th.r.by promoting theh.r.performance.

关键词： heterostructure hollow sph.r.cal structure hydrogen oxidation reaction Ch.r.e redistribution Density functional calculation

Valence electronic engineering of superhydrophilic Dy-evoked Ni-MOF outperforming ruO_(2) for highly efficient electrocatalytic oxygen evolution

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Journal of Energy Chemistry 2024年第3期90卷 244-252,I0007页

作者： Zhiyang huang Miao Liao Shifan Zhang Lixia Wang Mingcheng Gao Zuyang Luo Tayirjan taylor Isimjan Bao Wang Xiulin Yang Guangxi Key Laboratory of Low Carbon Energy Materials School of Chemistry and Pharmaceutical SciencesGuangxi Normal UniversityGulin 541004GuangxiChina State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China Saudi Arabia Basic Industries Corporation(SABIC)at King Abdullah University of Science and Technology(KAUST) Thuwal 23955-6900Saudi Arabia

Tackling the problem of poor conductivity and catalytic stability of pristine metal-organic frameworks(MOFs) is crucial to improve their oxygen evolution reaction(OEr) ***,we introduce a novel strategy of dysprosium(Dy) doping,using the unique 4f orbitals of this rare earth element to enhance electrocatalytic activity of *** method involves constructing Dy-doped Ni-MOF(Dy@Ni-MOF) nanoneedles on carbon cloth via a Dy-induced valence electronic perturbation *** and density functional theory(DFT) calculations reveal that Dy doping can effectively modify the electronic structure of the Ni active centers and foster a strong electronic interaction between Ni and *** resulting benefits include a reduced work function and a closer proximity of the d-band center to the Fermi level,which is conducive to improving electrical conductivity and promoting the adsorption of oxygen-containing ***,the Dy@Ni-MOF achieves superhydrophilicity,ensuring effective electrolyte contact and thus accelerating reaction kinetics,Ex-situ and in-situ analysis results manifest Dy_(2)O_(3)/NiOOh as the actual active ***,Dy@Ni-MOF shows impressive OEr performance,significantly surpassing ***,the overall water splitting device with Dy@NiMOF as an anode delivers a low cell voltage of 1.51 V at 10 mA cm^(-2) and demonstrates long-term stability for 100 h,positioning it as a promising substitute for precious metal catalysts.

关键词： Dy@Ni-MOF Dy incorporation Electronic interaction Superhydrophilicity Oxygen evolution reaction

Phytic acid-derivative Co_(2)B-CoPO_x coralloidal structure with delicate boron vacancy for enhanced hydrogen generation from sodium borohydride

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Chinese Chemical Letters 2024年第4期35卷 525-531页

作者： Luyan Shi Ke Zhu Yuting Yang Qinrui Liang Qimin Peng Shuqing Zhou Tayirjan taylor Isimjan Xiulin Yang Guangxi Key Laboratory of Low Carbon Energy Materials School of Chemistry and Pharmaceutical SciencesGuangxi Normal UniversityGuilin 541004China Saudi Arabia Basic Industries Corporation(SABIC)at King Abdullah University of Science and Technology(KAUST) Thuwal 23955-6900Saudi Arabia

Application of transition metal boride(TMB) catalysts towards hydrolysis of NaBh_(4) holds great significance to help relieve the energy crisis. h.r.in, we present a facile and versatile metal-organic framework(MOF) assisted strategy to prepare Co_(2)B-CoPO_x with massive boron vacancies by introducing phytic acid(PA) cross-linked Co complexes that are acquired from reaction of PA and ZIF-67 into cobalt boride. The PA etching effectively breaks down the structure of ZIF-67 to create more vacancies, favoring the maximal exposure of active sites and elevation of catalytic activity. Experimental results demonstrate a drastic electronic interaction between Co and the dopant phosph.r.us(P), th.r.by the robustly electronegative P induces electron redistribution around the metal species, which facilitates the dissociation of B-h bond and the adsorption of h_(2)O molecules. The vacancy-rich Co_(2)B-CoPO_x catalyst exhibits scalable performance, ch.r.cterized by a high hydrogen generation rate(h.r. of 7716.7 m L min^(-1)g^(-1) and a low activation energy(Ea) of 44.9 k J/mol, rivaling state-of-the-art catalysts. This work provides valuable insights for the development of advanced catalysts through P doping and boron vacancy engineering and the design of efficient and sustainable energy conversion systems.

关键词： Co_(2)B-CoPO_x catalyst P doping Boron vacancy NaBh_(4) hydrolysis hydrogen generation

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单眼和双眼视力丧失对生活质量的影响

世界核心医学期刊文摘（眼科学分册） 2005年第8期1卷 47-47页

作者： Vu h.T.V. Keeffe J.E. McCarty C.A. taylor h.r. 王海燕 Centre for Eye research Australia University of Melbourne 32 Gisborne Street East Melbourne Vic . 3002 Australia

Aim: To investigate wheth.r.unilateral vision loss reduced any aspects of qual ity of life in comparison with normal vision and to compare its impact with that of bilateral vision loss. Methods: This study used cluster stratified random sa mple of 3271 urban participants recruited between 1992 and 1994 for the Melbourn e Visual Impairment Project. All predictors and outcomes were from the 5 year fo llow up examinations conducted in 1997-9. results: Th.r. were 2530 participants who attended the follow up survey and had measurement of presenting visual acui ty. Both unilateral and bilateral vision loss were significantly associated with increased odds of having problems in visual functions including reading the tel ephone book, newspaper, watching television, and seeing faces. Non-correctable by refraction unilateral vision loss increased the odds of falling when away fro m home (Or=2.86, 95%CI 1.16 to 7.08), getting help with ch.r.s (Or=3.09, 95%CI 1.40 to 6.83), and becoming dependent (getting help with meals and ch.r.s) (Or =7.50, 95%CI 1.97 to 28.6). Non-correctable bilateral visual loss was associat ed with many activities of daily living except falling. Conclusions: Non-correc table unilateral vision loss was associated with issues of safety and independen t living while non-correctable bilateral vision loss was associated with nursin g home placement, emotional wellbeing, use of community services, and activities of daily living. Correctable or treatable vision loss should be detected and at tended to.

关键词：双眼视力生活质量单眼视力正常视力分层随机抽样法检查和

构筑富含磷空位缺陷的磷化钯催化剂实现高效和抗CO毒化的碱性氢氧化反应

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Chinese Journal of Catalysis 2024年第1期56卷 176-187页

作者：杨玉婷石路岩梁沁睿刘奕董家新 Tayirjan taylor Isimjan 王宝杨秀林广西师范大学化学与药学学院广西低碳能源材料重点实验室中国广西桂林541004 中山大学环境科学与工程学院中国广东广州510275 中国科学院过程工程研究所生化工程国家重点实验室中国北京100190 阿卜杜拉国王科技大学的沙特阿拉伯基础工业公司图瓦勒沙特阿拉伯

碱性阴离子交换膜燃料电池(AEMFCs)可以直接将氢的化学能转化为电能,被认为是新兴绿色氢经济的基石技术.但其阳极氢氧化反应(h.r.动力学缓慢,严重依赖于Pt基催化剂.由于Pt基催化剂极易被CO毒化、动力学过程复杂以及价格昂贵,极大限制了... 详细信息

碱性阴离子交换膜燃料电池(AEMFCs)可以直接将氢的化学能转化为电能,被认为是新兴绿色氢经济的基石技术.但其阳极氢氧化反应(h.r.动力学缓慢,严重依赖于Pt基催化剂.由于Pt基催化剂极易被CO毒化、动力学过程复杂以及价格昂贵,极大限制了其商业化应用.因此,亟需开发高效、稳定和抗CO毒化能力强的新型h.r.化剂.Pd具有与Pt相似的氢键结合能,并且比Pt储量丰富,有望成为实现h.r.候选催化剂.然而,Pd的本征催化活性和Pt相比仍有很大差距.近年来,磷化钯因具有功能多样性和高催化活性被广泛关注.此外,缺陷工程可以有效调控催化剂的表面结构,改善中间体的吸附强度,提高催化剂的催化活性.因此,构建富含缺陷的磷化钯催化剂有望提高其h.r.性能.然而,该方向研究较少,反应机理尚不清楚.因此,阐明空位缺陷对于提高磷化钯催化剂h.r.能的作用机制,对促进AEMFCs电催化反应具有重要意义.本文通过溶胶-凝胶法以及低温磷化策略合成了一种碗状半球结构的富含磷空位Pd3P@C(V_(p)-Pd_(3)P@C)催化剂,并用于碱性h.r.在磷化过程中,通过调整Pd前驱体和磷源比例以及煅烧温度,在碳碗状半球载体上合成具有不同晶相组成(Pd/Pd_(3)P@C,Pd_(3.20)P_(12)@C,Pd_(3)P@C,和Pd_(5)P_(2)@C)的Pd_(x)P_(y)@C催化剂.扫描电镜和透射电镜证实了催化剂为碗状半球形貌.利用电子顺磁共振波谱研究了Pd_(x)P_(y)@C催化剂的磷空位浓度,结果表明,Pd/P比例为1:3时,在350℃下煅烧得到的Vp-Pd_(3)P@C具有最高的磷空位浓度.X射线光电子能谱证实了磷空位促进了d-p轨道杂化,增强了Pd和磷之间的电子相互作用.电化学测试结果表明,Vp-Pd_(3)P@C具有最高的h.r.能,Vp-Pd_(3)P@C在50 mV的质量活性为1.66 mAμg_(Pd)^(–1),交换电流密度为3.2 mA cm^(–2),优于Pd3P(0.45 mAμg_(Pd)^(-1),1.78 mA cm^(–2))和商业Pt/C(0.3 mAμg_(Pd)^(-1),2.29 mA cm^(–2)).同时,该催化剂在50 mV的电位下能稳定运行20 h.此外,即使在CO浓度高达1000 ppm时,Vp-Pd_(3)P@C催化剂仍表现出较好的h.r.性.紫外光电子能谱证实了Vp-Pd_(3)P@C中的Pd原子呈现缺电子状态,这不利于Pd 4d轨道对CO 2π^(*)轨道的电子反馈,降低了Pd和CO的键合强度,进而减弱了Pd对CO分子的吸附,从而增强了其抗CO中毒的能力.密度泛函理论计算结果表明,相较于磷空位浓度较少的Pd_(3)P@C催化剂,富含磷空位缺陷的Vp-Pd_(3)P@C催化剂能够优化和平衡反应中间体(hads和Ohads)的吸附强度,使速率决定步骤从h_(2)O^(*)的解吸转换到h_(2)O的形成,促进了Volmer反应(hads+Ohads→h_(2)O+2^(*)sites)的进行,进而提升了催化活性.系统实验和表征结果表明,Vp-Pd_(3)P@C较好的h.r.能可归因于以下3个因素:(1)空心碗状结构大大地增加了固-液-气三相接触点,加速了h.r.传质过程;(2)磷空位产生的局部反应活性和有利的电子结构优化了hads和Ohads的吸附强度,极大地促进了Volmer步骤;(3)丰富的磷空位打破了原有的周期性晶体结构,形成了新的电子结构,有效地抑制了电子从Pd 4d轨道到CO 2π^(*)轨道的反馈,提高了Vp-Pd_(3)P@C对CO的耐受能力.综上,本文通过缺陷工程策略调控了Vp-Pd_(3)P@C中活性位点与h.r.键中间体的相互作用,明确了空位缺陷浓度与h.r.性之间的构效关系.并从碱性h.r.应机理,CO分子与金属催化剂的轨道相互作用以及结构设计三个方面总结了高效和稳定的h.r.化剂的设计原则.目前,由于界面环境的复杂性和缺乏原位技术,催化剂表面上痕量中间体的光谱信息难以获得,未来可在开发原位技术监测h.r.程中间体和催化剂的组分变化方面做出更多的努力,以促进AEMFCs的商业化应用.

关键词：氢氧化反应 CO耐受性磷空位 V_(p)-Pd_(3)P@C 碗状半球

Linking 24-h Movement Behavior Guidelines to Cognitive Difficulties,Internalizing and Externalizing Problems in Preterm Youth

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International Journal of Mental health Promotion 2024年第8期26卷 651-662页

作者： Zhihui Cheng Ailikute Aikeremu Yanping Gao Zhihao Zhang Anthony G.Delli Paoli Paolo Marcello Cunha Alyx taylor Fabian h.r.ld Liye Zou Body-Brain-Mind Laboratory School of PsychologyShenzhen UniversityShenzhen518060China Department of Kinesiology and health Rutgers UniversityNew BrunswickNJ 08901USA Metropolitan University Center of Maringá Maringá87020Brazil School of health and rehabilitation Sciences AECC University CollegeBournemouthBH52DFUK research Group Degenerative and Chronic Diseases MovementFaculty of Health Sciences BrandenburgUniversity of PotsdamPotsdam14476Germany

Background:Given the heightened risk of developmental challenges associated with preterm birth,it is crucial to explore interventions that may ameliorate potential adverse *** study aimed to examine wheth.r.meeting the 24-h movement behavior(24-hMB)guidelines,which include recommendations on physical activity(PA),screen time(ST),and sleep(SL),is related to indicators of cognitive difficulties,internalizing problems(e.g.,depression and anxiety),and externalizing problems(e.g.,difficulties in making friends and arguing)in a sample of preterm youth(children and adolescents born preterm).Methods:In this cross-sectional study,data from 3410 preterm youth(aged 6 to 17 years)were included for data *** logistic regression was used to investigate associations between meeting the 24-hMB guidelines and the above-mentioned health outcomes,while controlling for sociodemographic and health.r.lated ***:The prevalence of meeting 24-hMB guidelines varied across independent and integrated components of the 24-hMB *** the ST guideline alone(prated guidelines(i.e.,ST+SL and ST+SL+PA)were associated with fewer cognitive difficulties and reduced internalizing and externalizing problems(phe SL guideline alone and integrated guidelines(i.e.,SL+ST)were associated with lower odds of depression and anxiety(prated(PA and/or ST)guidelines were associated with less pronounced difficulties in making friends and arguing(phMB guidelines in an isolated and integrated manner are linked to better cognitive performance and fewer internalizing and externalizing problems in preterm ***:results suggest that advocating for the implementation of the 24-hMB guidelines may reduce cognitive challenges and behavioral issues,which is of high.r.levance for improving public *** longitudinal studies in preterm youth should inves

关键词： Cognitive difficulties externalizing problems internalizing problems physical activity preterm youth

Successional trends and processes on a glacial foreland in South.r. Iceland studied by repeated species counts

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Ecological Processes 2019年第1期8卷 138-148页

作者： taylor G.Glausen Lawrence h.Tanner Jacobs School of Medicine and Biomedical Sciences State University of New York at BuffaloBuffaloNY 14203USA Department of Biological and Environmental Sciences Le Moyne CollegeSyracuseNY 13214USA

Introduction:Primary succession on glacial forelands is increasingly relevant as rapid glacial retreat is exposing growing land areas to plant *** investigated temporal trends,controls,and outcomes in floral succession on a subarctic glacial ***,we examined changes in community composition(mosses,low shrubs,forbs,trees,and graminoids)over long-term(decadal)and sh.r.-term(rs)scales and attempted to identify the underlying processes responsible for the observed successional ***:The study area was the foreland of the Skaftafellsjӧkull,located in Vatnajӧkull National Park near the south coast of *** established nine transect lines at varying distances from the ice front representing surfaces of age ranging from less than one decade to over 100 *** transect consisted of five measurement stations of 1 m2 wh.r. we measured vegetative cover(VC),species richness(Sr),and species density(SD)and calculated species evenness(SE).Measurements were made initially in 2007 and repeated at the same geographic coordinates in ***:VC increased with distance from the ice front from 16%to over 90%.Sr and SD increased from the youngest pioneer community through a mid-successional stage corresponding to an age of over 60 but less than 100 *** VC but declining Sr,SD,and SE ch.r.cterized the oldest(over 100 years)bryophyte-dominated *** turnover,which involved forbs almost exclusively,increased moderately from early through midsuccessional sites and declined on older *** of the measurements made in 2014 to those made in 2007 demonstrates increased Sr at mid-successional sites while SD remained relatively ***:At a small scale,colonization is controlled by local factors such as microtopography and aspect,particularly in proximity to the *** the landscape level,changes in VC and community structure are controlled by time and nutrient *** nutrient level

关键词： Primary succession Glacial foreland Species richness Species density Bryophyte

Oxytocin structure and function in New World monkeys:from ph.r.acology to behavior

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Integrative Zoology 2018年第6期13卷 634-654页

作者： Aaryn MUSTOE Jack h.taylor Jeffrey A.FrENCh Program in Neuroscience and Behavior University of Nebraska at OmahaOmahaNebraskaUSA

Oxytocin(OT)is a hypothalamic nonapeptide that mediates a host of physiological and behavioral processes in-cluding reproductive physiology and social *** the OT sequence structure is highly conserved among mammals,New World monkeys(NWMs)represent an unusual“hot spot”in OT structure variability among *** least 6 distinct OT ligand variants among NWMs exist,yet it is currently unclear wheth.r.these evolved structural changes result in meaningful functional *** offer a new area to explore how these modifications to OT and its canonical G-protein coupled OT receptor(OTr)may mediate specific cellular,physiological and behavioral *** this review,we highlight relationships between OT ligand and OTr structural variability,specifically examining coevolution between OT ligands,OTrs,and physiological and behavioral phenotypes across *** consider wheth.r.these evolved modifications to the OT structure alter ph.r.acological profiles at human and marmoset OTrs,including changes to receptor binding,intracellular signaling and receptor ***,we evaluate wheth.r.exogenous manipulation using OT variants in marmoset monkeys differentially enhance or impair behavioral processes involved in social relationships between pairmates,opposite-sex strangers,and parents and their ***,it appears that changes to OT ligands in NWMs result in important changes ranging from cellular signaling to broad measures of social behavior.

关键词： cell signaling marmoset oxytocin receptor ph.r.acology social behavior

In situ selective laser gas nitriding for composite TiN/Ti-6Al-4V fabrication via laser powder bed fusion

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Journal of Materials Science & Technology 2020年第10期42卷 98-107页

作者： P.A.Morton h.C.taylor L.E.Murr O.G.Delgado C.A.Terrazas r.B.Wicker W.M.Keck Center for 3D Innovation The University of Texas at El PasoEl PasoTX79968USA Department of Mechanical Engineering The University of Texas at El PasoTX 79968USA Department of Metallurgical Materials and Biomedical EngineeringThe University of Texas at El PasoTX 79968USA

Laser-assisted gas nitriding of selective Ti-6Al-4V surfaces has been achieved during laser powder bed fusion fabrication by exchanging the argon build gas environment with *** variation of processing parameters allowed microdendritic Ti N surface coatings to be formed having thicknesses ranging from a few tens of microns to several hundred microns,with TiN dendrite microstructure volume fractions ranging from 0.6 to 0.75;and corresponding Vickers microindentation h.r.ness values ranging from^7.5 GPa–9.5 *** TiN h.r. layers ranging from 50μm to 150μm thick were also fabricated in the laser-beam additively manufactured Ti-6Al-4V alloy producing prototype,hybrid,planar composites having alternating,ductile Ti-6Al-4V layers with a h.r.ness of^4.5 GPa and a stiff,TiN layer with a h.r.ness of^8.5 *** results demonstrate prospects for fabricating novel,additively manufactured components having selective,h.r.,wear and corrosion resistant coatings along with periodic,planar or complex metal matrix composite regimes exhibiting superior toughness and related mechanical properties.

关键词： Ti-6Al-4V TiN ceramic coatings and embedded layers Dendritic microstructures Selective laser melting Additive manufacturing Metal matrix composites Selective nitriding