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| 1 | Folic Acid Self-Assembly Enabling Manganese Single-Atom Electrocatalyst for Selective Nitrogen Reduction to Ammonia显示文摘Efficient and robust single-atom catalysts(SACs)based on cheap and earth-abundant elements are highly desirable for electrochemical reduction of nitrogen to ammonia(NRR)under ambient conditions.Herein,for the first time,a Mn-N-C SAC consisting of isolated manganese atomic sites on ultrathin carbon nanosheets is developed via a template-free folic acid self-assembly strategy.The spontaneous molecular partial dissociation enables a facile fabrication process without being plagued by metal atom aggregation.Thanks to well-exposed atomic Mn active sites anchored on two-dimensional conductive carbon matrix,the catalyst exhibits excellent activity for NRR with high activity and selectivity,achieving a high Faradaic efficiency of 32.02%for ammonia synthesis at−0.45 V versus reversible hydrogen electrode.Density functional theory calculations unveil the crucial role of atomic Mn sites in promoting N_(2) adsorption,activation and selective reduction to NH_(3) by the distal mechanism.This work provides a simple synthesis process for Mn-N-C SAC and a good platform for understanding the structure-activity relationship of atomic Mn sites. | Xuewan Wang Dan Wu Suyun Liu Jiujun Zhang Xian-Zhu Fu Jing-Li Luo | 2021 | Nano-Micro Letters2021，13，8： | 3 |
| 2 | In situ redox growth of mesoporous Pd-Cu2O nanoheterostructures for improved glucose oxidation electrocatalysis显示文摘Interfaces of metal-oxide heterostructured electrocatalyst are critical to their catalytic activities due to the significant interfacial effects. However, there are still obscurities in the essence of interfacial effects caused by crystalline defects and mismatch of electronic structure at metal-oxide nanojunctions. To deeply understand the interfacial effects, we engineered crystalline-defect Pd-Cu2O interfaces through nonepitaxial growth by a facile redox route. The Pd-Cu2O nanoheterostructures exhibit much higher electrocatalytic activity toward glucose oxidation than their single counterparts and their physical mixture,which makes it have a promising potential for practical application of glucose biosensors.Experimental study and density functional theory(DFT) calculations demonstrated that the interfacial electron accumulation and the shifting up of d bands center of Cu-Pd toward the Fermi level were responsible for excellent electrocatalytic activity. Further study found that Pd(3 1 0) facets exert a strong metaloxide interface interaction with Cu2O(1 1 1) facets due to their lattice mismatch. This leads to the sinking of O atoms and protruding of Cu atoms of Cu2O, and the Pd crystalline defects, further resulting in electron accumulation at the interface and the shifting up of d bands center of Cu-Pd, which is different from previously reported charge transfer between the interfaces. Our findings could contribute to design and development of advanced metal-oxide heterostructured electrocatalysts. | Ying Guo Jianwen Liu Yi-Tao Xu Bo Zhao Xuewan Wang Xian-Zhu Fu Rong Sun Ching-Ping Wong | 2019 | Science Bulletin2019，64，11： | 3 |
| 3 | Nanowires assembled from MnCo2O4@C nanoparticles for water splitting and all-solid-state supercapacitor显示文摘有切开活动的优秀的水的地球丰富的催化剂的合理设计是重要的为持续精力设备获得干净燃料。在这研究,混合了在 nitrogendoped 碳包含的转变金属氧化物 nanoparticles (作为 AB 表示了 2 O 4@NC) 用一个一个壶协议被开发,金属器官的建筑群在那里作为先锋被采用。作为概念的一个证明, MnCo 2 O 4@NC 为水氧化被用作 electrocatalyst,并且与低过电位表明了一项突出的 electrocatalytic 活动完成 10 妈的当前的密度 ??? 娠佮 ? 佧?? | Chencheng Sun Jun Yang Ziyang Dai Xuewan Wang Yufei Zhang Laiquan Li Peng Chen Wei Huang Xiaochen Dong | 2016 | Nano Research2016，9，5： | 2 |
| 4 | A facile approach to fabricating graphene/waterborne epoxy coatings with dual functionalities of barrier and corrosion inhibitor显示文摘A facile and environmentally-friendly method is developed to prepare graphene/waterborne epoxy(WEP)composite coatings.The graphene nanosheets are produced with electrochemical-exfoliation in the solution containing surfactants,cetyl trimethyl ammonium bromide(CTAB)and sodium dodecyl sulfate(SDS).The nanosheets containing solution thus formed are subjected to a quick dialysis and then directly used as a diluent for WEP without any further treatment.This preparation method overcomes the commonly identified problems of aggregations and‘corrosion promotion’effect associated with graphene,and increases the impedance of the composite coatings by more than two orders of magnitude.The analysis of anticorrosion performance suggested that the presence of surfactants not only improves the dispersibility of graphene nanosheets but also endows the composite coatings with both barrier and corrosion inhibition capabilities.The strategy reported herein may pave the path to the large-scale production of graphene anticorrosion coatings. | Suyun Liu Xuewan Wang Qi Yin Xiongzhi Xiang Xian-Zhu Fu Xian-Zong Wang Jing-Li Luo | 2022 | Journal of Materials Science & Technology2022，，17： | 2 |
| 5 | Non-enzy- matic detection of hydrogen peroxide using a functionalized three- dimensional graphene electrode 显示文摘 | Xi Fengna Zhan Dongjiao Wang Xuewan | 2013 | Electrochem Com- mun2013，26，： | 1 |
| 6 | Synthesis of a MnO 2 –graphene foam hybrid with controlled MnO 2 particle shape and its use as a supercapacitor electrode显示文摘 | Xiaochen Dong Xuewan Wang Jing Wang Hao Song Xingao Li Lianhui Wang Mary B. Chan-Park Chang Ming Li Peng Chen | 2012 | Carbon2012，，： | 1 |
| 7 | Non-enzymatic detection of hydrogen peroxide using a functionalized three-dimensional graphene electrode显示文摘 | Fengna Xi Dongjiao Zhao Xuewan Wang Peng Chen | 2013 | Electrochemistry Communications2013，，： | 1 |
| 8 | Synthesis of a MnO2-graphene foam hybrid with controlled MnO2 particle shape and its use as a supercapacitor electrode 显示文摘 | Dong Xiaochen Wang Xuewan Wang Jing | 2012 | Carbon2012，50，： | 1 |
| 9 | Co-and N-doped carbon nanotubes with hierarchical pores derived from metal-organic nanotubes for oxygen reduction reaction显示文摘Biomolecules with a broad range of structure and heteroatom-containing groups offer a great opportunity for rational design of promising electrocatalysts via versatile chemistry.In this study,uniform folic acid-Co nanotubes(FA-Co NTs) were hydrothermally prepared as sacrificial templates for highly porous Co and N co-doped carbon nanotubes(Co-N/CNTs) with well-controlled size and morphology.The formation mechanism of FA-Co NTs was investigated and FA-Co-hydrazine coordination interaction together with the H-bond interaction between FA molecules was characterized to be the driving force for growth of one-dimensional nanotubes.Such distinct metal-ligand interaction afforded the resultant CNTs rich Co-N_x sites,hierarchically porous structure and Co nanoparticle-embedded conductive network,thus an overall good electrocatalytic activity for oxygen reduction.Electrochemical tests showed that Co-N/CNTs-900 promoted an efficient 4 e ORR process with an onset potential of 0.908 V vs.RHE,a limiting current density of 5.66 mA cm^(-2) at 0.6 V and a H_2 O_2 yield lower than 5%,comparable to that of 20%Pt/C catalyst.Moreover,the catalyst revealed very high stability upon continuous operation and remarkable tolerance to methanol. | Xuewan Wang Xiuan Xi Ge Huo Chenyu Xu Pengfei Sui Renfei Feng Xian-Zhu Fu Jing-Li Luo | 2021 | Journal of Energy Chemistry2021，30，2： | 0 |
| 10 | Copper-cobalt-nickel oxide nanowire arrays on copper foams as self-standing anode materials for lithium ion batteries显示文摘Numerous scientists are in the pursuit of energy storage materials with high energy and high power density by assembly of electrochemically active materials into conductive scaffolds,owing to the emerging need for next-generation energy storage devices.In this architectures,the active materials bonded to the conductive scaffold can provide a robust and free-standing structure,which is crucial to the fabrication of materials with high gravimetric capacity.Thus,hierarchical copper-cobalt-nickel ternary oxide(CuCoNi-oxide) nanowire arrays grown from copper foam were successfully fabricated as freestanding anode materials for lithium ion batteries(LIBs).CuCoNi-oxide nanowire arrays could provide more active sites owing to the hyperbranched structure,leading to a better specific capacity of 1191 mAh/g,cycle performance of 73% retention in comparison to CuO nanowire structure,which exhibited a specific capacity of 1029 mAh/g and capacity retention of 43%,respectively. | Xiaomin Kang Guodong Fu Xuewan Wang Lin Shao Weili Li Chi-Wing Tsang Xiao-Ying Lu Xian-Zhu Fu Jing-Li Luo | 2021 | Chinese Chemical Letters2021，32，2： | 0 |
| 11 | Densely packed ultrafine SnO_(2) nanoparticles grown on carbon cloth for selective CO_(2) reduction to formate显示文摘Electrochemical reduction of CO_(2) to fuels and chemicals is a viable strategy for CO_(2) utilization and renewable energy storage.Developing free-standing electrodes from robust and scalable electrocatalysts becomes highly desirable.Here,dense SnO_(2) nanoparticles are uniformly grown on three-dimensional(3D)fiber network of carbon cloth(CC)by a facile dip-coating and calcination method.Importantly,Zn modification strategy is employed to restrain the growth of long-range order of SnO_(2) lattices and to produce rich grain boundaries.The hybrid architecture can act as a flexible electrode for CO_(2)-to-formate conversion,which delivers a high partial current of 18.8 m A cm-2 with a formate selectivity of 80%at a moderate cathodic potential of-0.947 V vs.RHE.The electrode exhibits remarkable stability over a 16 h continuous operation.The superior performance is attributed to the synergistic effect of ultrafine SnO_(2) nanoparticles with abundant active sites and 3D fiber network of the electrode for efficient mass transport and electron transfer.The sizeable electrodes hold promise for industrial applications. | Xuewan Wang Dan Wu Xiaomin Kang Jiujun Zhang Xian-Zhu Fu Jing-Li Luo | 2022 | Journal of Energy Chemistry2022，31，8： | 0 |
| 12 | Uniquely Decomposable Constellation Group-Based Sparse Vector Coding for Short Packet Communications显示文摘Sparse vector coding(SVC)is emerging as a potential technology for short packet communications.To further improve the block error rate(BLER)performance,a uniquely decomposable constellation group-based SVC(UDCG-SVC)is proposed in this article.Additionally,in order to achieve an optimal BLER performance of UDCG-SVC,a problem to optimize the coding gain of UDCG-based superimposed constellation is formulated.Given the energy of rotation constellations in UDCG,this problem is solved by converting it into finding the maximized minimum Euclidean distance of the superimposed constellation.Simulation results demonstrate the validness of our derivation.We also find that the proposed UDCGSVC has better BLER performance compared to other SVC schemes,especially under the high order modulation scenarios. | Xuewan Zhang Hongyang Chen Di Zhang Ganyu Qin Battulga Davaasambuu Takuro Sato | 2023 | China Communications2023，20，5： | 0 |
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