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| 1 | Recent Progress on Two-dimensional Electrocatalysis显示文摘Due to their unique electronic and structural properties triggered by high atomic utilization and easy surface modification,two-dimensional(2D)materials have prodigious potential in electrocatalysis for energy conversion technology in recent years.In this review,we discuss the recent progress on two-dimensional nanomaterials for electrocatalysis.Five categories including metals,transition metal compounds,non-metal,metal-organic framework and other emerging 2D nanomaterials are successively introduced.Finally,the challenges and future development directions of 2D materials for electrocatalysis are also prospected.We hope this review may be helpful for guiding the design and application of 2D nanomaterials in energy conversion technologies. | FANG Wensheng HUANG Lei ZAMAN Shahid WANG Zhitong HAN Youjia XIA Bao Yu | 2020 | Chemical Research in Chinese Universities2020，36，4： | 7 |
| 2 | 铂基空心纳米框架的合成及其在直接醇燃料电池中的应用显示文摘与其他铂基纳米晶体材料相比,铂基纳米框架催化剂因其独特的结构特征和优异的催化性能引起研究者的广泛关注。开放的空间结构设计和组分可控调制不仅提高了铂的原子利用率,而且能在减少铂消耗的同时改善其电催化活性。本文简要综述了铂基纳米框架电催化剂的最新进展。在介绍不同的铂基纳米框架制备和蚀刻策略之后,也对框架晶体的结构演变及其在醇燃料电池中氧还原反应和醇氧化反应的催化应用进行了总结。此外,基于纳米框架材料的类型、合成方法、结构形态和催化性能,对铂基纳米框架的当前存在的挑战和未来的发展前景进行了总结和展望。基于铂基纳米框架材料的改进机制和规模化制备策略,我们相信纳米框架材料将会在醇燃料电池等技术中发挥更大作用。 | 黄磊 Shahid Zaman 王志同 牛慧婷 游波 夏宝玉 | 2021 | 物理化学学报2021，37，9： | 6 |
| 3 | Recent Advances on MOF Derivatives for Non-Noble Metal Oxygen Electrocatalysts in Zinc-Air Batteries显示文摘Oxygen electrocatalysts are of great importance for the air electrode in zinc-air batteries(ZABs).Owing to the high specific surface area,controllable pore size and unsaturated metal active sites,metal-organic frameworks(MOFs)derivatives have been widely studied as oxygen electrocatalysts in ZABs.To date,many strategies have been developed to generate efficient oxygen electrocatalysts from MOFs for improving the performance of ZABs.In this review,the latest progress of the MOF-derived non-noble metal-oxygen electrocatalysts in ZABs is reviewed.The performance of these MOF-derived catalysts toward oxygen reduction,and oxygen evolution reactions is discussed based on the categories of metal-free carbon materials,single-atom catalysts,metal cluster/carbon composites and metal compound/carbon composites.Moreover,we provide a comprehensive overview on the design strategies of various MOF-derived non-noble metal-oxygen electrocatalysts and their structure-performance relationship.Finally,the challenges and perspectives are provided for further advancing the MOF-derived oxygen electrocatalysts in ZABs. | Yuting Zhu Kaihang Yue Chenfeng Xia Shahid Zaman Huan Yang Xianying Wang Ya Yan Bao Yu Xia | 2021 | Nano-Micro Letters2021，13，9： | 5 |
| 4 | 一维铂基纳米结构氧还原电催化剂的设计与合成显示文摘燃料电池因其转换效率高和环境友好而引起了人们的广泛关注.然而,缓慢的阴极氧还原反应(ORR)动力学严重限制了燃料电池的性能.铂基材料是非常有前景的ORR催化剂,但是铂储量稀少和价格昂贵阻碍了其在燃料电池领域的应用.因此,设计和开发新型纳米结构催化剂,降低铂用量和提高铂利用率是非常必要的.一维铂基纳米结构因其高比表面积、高导电率和优异的抗腐蚀性,在ORR催化中表现出巨大的应用潜力.本文综述了一维铂基催化剂的合成、设计和优化策略以及在ORR应用方面的最新进展.简单介绍了ORR的反应机理和一维材料的结构优势,从合成策略上详细讨论了模板法和无模板法两个合成路径,并强调了外部形貌(纳米棒、纳米线和纳米管)及内部组成(无序合金和金属间化合物)的优化,以及一维铂基纳米材料的多维组装结构.在合成方面,可通过调节模板、表面活性剂、封装剂和结构导向剂等控制生长过程获得更多样的一维结构及其多维组装结构.相对于模板法,无模板法在制备工艺上更加简单.此外,不同的一维结构可通过改善电化学活性表面积及其原子利用率显著提升ORR催化性能.同时,可通过几何效应、应变效应及其协同效应调节铂的电子结构,进而提高催化性能.在化学组成上,过渡金属的引入不仅可以降低铂的用量并提高铂的利用率,还可以调节铂的d带中心,增强催化活性.与无序合金相比,金属间化合物由于增强的Pt(5d)-M(3d)相互作用同样展现出优异的催化性能.物理结构和化学结构的综合调控可极大地改善一维铂基结构的电催化性能.本文还就一维铂基材料的合成创新、结构设计、物理表征和理论研究等提出了展望,指出了一维铂基催化剂的应用潜力,为燃料电池ORR催化剂的发展和实际应用指明了方向. | 牛慧婷 夏琛沣 黄磊 Shahid Zaman Thandavarayan Maiyalagan 郭巍 游波 夏宝玉 | 2022 | Chinese Journal of Catalysis2022，43，6： | 3 |
| 5 | Analysis of steroidal sapogenins from Amber fenugreek (Trigonella foenum-graecum)by capillary gas chromatography and combined gas chromato-graphy/mass spectrometry显示文摘 | Wesley G Taylor M Shahid Zaman Zahir Mir | 1997 | J Agric Food Chem1997，45，3： | 1 |
| 6 | 超低铂合金与纳米碳结构直接集成的高效氧还原催化剂的设计显示文摘开发高效的铂(Pt)基电催化剂对于燃料电池的发展具有极其重要的意义.本文报道了一种氮掺杂纳米碳结构包覆的超低Pt合金集成电催化剂并用于燃料电池氧还原反应.该Pt基催化剂复合材料在0.9 V vs.RHE的电位下展现出3.46 A mg^(-1)_(Pt)质量活性,并且在10000圈循环后几乎没有衰减.单电池测试结果表明,其Pt利用率高达10.22 W mg^(-1)_(Pt)阴极,并具有30000圈循环的优异耐久性.实验和理论研究表明,将Co/Ni掺入Pt晶格可产生具有最佳Pt-O结合能的高应变Pt结构,这可显著加快反应动力学.氮掺杂纳米碳结构和活性Pt组分产生的协同催化作用是提高催化活性的主要原因,同时增强的金属-载体相互作用和优化的亲水性能可促进传质过程和水管理.这项工作可为燃料电池及其他领域的低Pt集成电催化剂的设计提供重要见解. | Shahid Zaman 田新龙 苏亚琼 蔡卫卫 严雅 齐瑞娟 Abdoulkader Ibro Douka 陈圣华 游波 刘宏芳 丁书江 郭兴蓬 夏宝玉 | 2021 | Science Bulletin2021，66，21： | 0 |
| 7 | Depositional facies and reservoir characteristics of the Early Cretaceous Lower Goru Formation,Lower Indus Basin Pakistan:Integration of petrographic and gamma-ray log analysis显示文摘The sand intervals of the Early Cretaceous Lower Goru Formation are a conventional reservoir,generally distributed in the Middle and Lower Indus Basin of Pakistan.Lithostratigraphically formation is classified into two parts;the upper parts are predominantly composed of shale,siltstone,and thin layers of alternate shale and sandstone,while the lower parts are composed of sandstone with interlayering of shale and limestone.The sandstone of the Lower Goru Formation has been further divided into A,B,C,and D sand intervals based on reservoir quality.Detailed depositional facies and reservoir characteristics are essential for the evaluation of hydrocarbon exploration and development.This paper aims to evaluate the depositional environment and reservoir characterization of the siliciclastic reservoir of the Early Cretaceous Lower Goru Formation by integrating the gamma-ray log patterns and petrographic analysis and scanning electron microscopic(SEM)analysis.Petrographic characterization of the sand intervals and Gamma-ray log signatures were used for the interpretation of the depositional environment of the reservoir intervals.Petrographic analysis reveals that the sandstone of the Lower Goru Formation is fine-to medium-grained,well-sorted,arkose or feldspathic arenite.Primary intergranular macroporosity,secondary intragranular macropores,and Intercrystalline micropores were identified within the sandstone by the SEM analysis.The diagenetic analysis suggests that the sandstone possesses high porosity,low permeability,and has undergone significant alterations such as compaction,quartz cementation,feldspar dissolution,and clay minerals alteration.Five electrofacies are interpreted based on gamma-ray log patterns including(1)funnel shape(FA);(2)bell shape(FB);(3)cylindrical shape(FC);(4)bow shape(FD);and(5)serrated shape(FE)patterns.The interpreted facies results reveal shoreface environment for A-sand,Tidal flat for B-sand,mixed tidal flat for C sand,Tide dominated mixed for D-sand,and transgressive shelf for Esand.The present study will be helpful for the assessment of the reservoir quality of the Early Cretaceous Lower Goru Formation for further exploration and development in the Indus Basin of Pakistan. | Qamar UZ Zaman Dar Pu Renhai Shahid Ghazi Shakeel Ahme Rana Imran Ali Mubashir Mehmood | 2023 | Petroleum2023，9，3： | 0 |
| 8 | The Kemeny’s Constant and Spanning Trees of Hexagonal Ring Network显示文摘Spanning tree(τ)has an enormous application in computer science and chemistry to determine the geometric and dynamics analysis of compact polymers.In the field of medicines,it is helpful to recognize the epidemiology of hepatitis C virus(HCV)infection.On the other hand,Kemeny’s constant(Ω)is a beneficial quantifier characterizing the universal average activities of a Markov chain.This network invariant infers the expressions of the expected number of time-steps required to trace a randomly selected terminus state since a fixed beginning state si.Levene and Loizou determined that the Kemeny’s constant can also be obtained through eigenvalues.Motivated by Levene and Loizou,we deduced the Kemeny’s constant and the number of spanning trees of hexagonal ring network by their normalized Laplacian eigenvalues and the coefficients of the characteristic polynomial.Based on the achieved results,entirely results are obtained for the M鯾ius hexagonal ring network. | Shahid Zaman Ali N.A.Koam Ali Al Khabyah Ali Ahmad | 2022 | Computers, Materials & Continua2022，，12： | 0 |
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