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| 1 | Ambient ammonia production via electrocatalytic nitrite reduction catalyzed by a CoP nanoarray显示文摘Industrial-scale ammonia(NH_(3))production mainly relies on the energy-intensive and environmentally unfriendly Haber-Bosch process.Such issue can be avoided by electrocatalytic N_(2) reduction which however suffers from limited current efficiency and NH3 yield.Herein,we demonstrate ambient NH_(3) production via electrochemical nitrite(NO_(2)^(-))reduction catalyzed by a CoP nanoarray on titanium mesh(CoP NA/TM).When tested in 0.1 M PBS(pH=7)containing 500 ppm N0_(2)^(-),such CoP NA/TM is capable of affording a large NH_(3) yield of 2,260.7±51.5μg·h^(-1)·cm^(-2) and a high Faradaic efficiency of 90.0±2.3%at-0.2 V vs.a reversible hydrogen electrode.Density functional theory calculations reveal that the potential-determining step for NO_(2)^(-)reduction over CoP(112)is*NO2→*NO_(2)H. | Guilai Wen Jie Liang Qian Liu Tingshuai Li Xuguang An Fang Zhang Abdulmohsen Ali Alshehri Khalid Ahmed Alzahrani Yonglan Luo Qingquan Kong Xuping Sun | 2022 | Nano Research2022，15，2： | 3 |
| 2 | Urban-rural disparities in mild cognitive impairment and its functional subtypes among community- dwelling older residents in central China显示文摘background Substantial variations in the prevalence of mild cognitive impairment(MCI)and its subtypes have been reported,although mostly in geographically defined developed countries and regions.Less is known about MCI and its subtypes in rural areas of less developed central China.Aims The study aimed to compare the prevalence of MCI and its subtypes in residents aged 65 years or older in urban and rural areas of Hubei Province,China.Methods Participants aged 65 years or older were recruited between 2018 and 2019.Inperson structured interviews and clinical and neuropsychological assessments were performed at city health community centres and township hospitals.results Among 2644 participants without dementia,735 had MCI,resulting in a prevalence of 27.8%for total MCI,20.9%for amnestic MCI(aMCI)and 6.9%for non-amnestic MCI(naMCI).The prevalence of MCI in urban and rural areas was 20.2%and 44.1%,respectively.After adjusting for demographic factors,the prevalence of total MCI,aMCI and naMCI differed significantly between rural and urban areas(adjusted odds ratio(OR)2.10,1.44 and 3.76,respectively).Subgroup analysis revealed an association between rural socioeconomic and lifestyle disadvantage and MCI and its subtypes.Conclusions Our findings suggest that the prevalence of MCI among urban residents in central China is consistent with that in other metropolis areas,such as Shanghai,but the prevalence in rural areas is twice that in urban areas.Prospective studies and dementia prevention in China should focus on rural areas. | Dan Liu Lin Li Lina An Guirong Cheng Cong Chen Mingjun Zou Bo Zhang Xuguang Gan Lang Xu Yangming Ou Qingming Wu Ru Wang Yan Zeng | 2021 | General Psychiatry2021，34，5： | 3 |
| 3 | A DFT study of Ti_(3)C_(2)O_(2)MXenes quantum dots supported on single layer graphene:Electronic structure an hydrogen evolution performance显示文摘Heterojunction structure has been extensively employed for the design of novel catalysts.In the present study,density functional theory was utilized to investigate the electronic structure and hydrogen evolution performance of Ti_(3)C_(2)O_(2)MXene quantum dots/graphene(QDs/G)heterostructure.Results show that a slight distortion can be observed in graphene after hybriding with QDs,due to which the electronic structure of QDs have been changed.Associated with such QDs-graphene interaction,the catalytic activity of Ti_(3)C_(2)O_(2)QDs has been optimized,leading to excellent HER catalytic performance. | Qingquan Kong Xuguang An Lin Huang Xiaolian Wang Wei Feng Siyao Qiu Qingyuan Wang Chenghua Sun | 2021 | Frontiers of physics2021，16，5： | 2 |
| 4 | Molybdenum Oxynitride Atomic Nanoclusters Bonded in Nanosheets of N-Doped Carbon Hierarchical Microspheres for Efficient Sodium Storage显示文摘Transition metal nitrides have attracted considerable attention as great potential anode materials due to their excellent metallic conductivity and high theoretical specific capacity.However,their cycling performance is impeded by their instability caused by the reaction mechanism.Herein,we report the engineering and synthesis of a novel hybrid architecture composed of MoO2.0N0.5 atomic nanoclusters bonded in nanosheets of N-doped carbon hierarchical hollow microspheres(MoO2.0N0.5/NC)as an anode material for sodium-ion batteries.The facile self-templating strategy for the synthesis of MoO2.0N0.5/NC involves chemical polymerization and subsequent one-step calcination treatments.The design is benefi-cial to improve the electrochemical kinetics,buffer the volume variation of electrodes during cycling,and provide more interfacial active sites for sodium uptake.Due to these unique structural and compositional merits,these MoO2.0N0.5/NC exhibits excellent sodium storage performance in terms of superior rate capability and stable long cycle life.The work shows a feasible and effective way to design novel host candidates and solve the long-term cycling stability issues for sodium-ion batteries. | Xiaona Pan Baojuan Xi Huibing Lu Zhengchunyu Zhang Xuguang An Jie Liu Jinkui Feng Shenglin Xiong | 2022 | Nano-Micro Letters2022，14，10： | 1 |
| 5 | Omicron variants breakthrough infection elicited higher specific memory immunity than third dose booster in healthy vaccinees显示文摘Homologous booster,heterologous booster,and Omicron variants breakthrough infection(OBI)could improve the humoral immunity against Omicron variants.Questions concerning about memory B cells(MBCs)and T cells immunity against Omicron variants,features of long-term immunity,after booster and OBI,needs to be explored.Here,comparative analysis demonstrate antibody and T cell immunity against ancestral strain,Delta and Omicron variants in Omicron breakthrough infected patients(OBIPs)are comparable to that in Ad5-nCoV boosted healthy volunteers(HVs),higher than that in inactivated vaccine(InV)boosted HVs.However,memory B cells(MBCs)immunity against Omicron variants was highest in OBIPs,followed by Ad5-nCoV boosted and InV boosted HVs.OBIPs and Ad5-nCoV boosted HVs have higher classical MBCs and activated MBCs,and lower naïve MBCs and atypical MBCs relative to both vaccine boosted HVs.Collectively,these data indicate Omicron breakthrough infection elicit higher MBCs and T cells against SARS-CoV-2 especially Omicron variants relative to homologous InV booster and heterologous Ad5-nCoV booster. | Pei Yu Zijian Liu Zhuoqi Zhu Jiaqing Yang Min Deng Mingxiao Chen Changchun Lai Weiya Kong Shilong Xiong Li Wan Weikang Mai Lu Chen Yu Lei Shahzad Akbar Khan Jianfeng Ruan An Kang Xuguang Guo Qiang Zhou Wenrui Li Zheng Chen Yuemei Liang Pingchao Li Lei Zhang Tianxing Ji | 2023 | Virologica Sinica2023，38，2： | 0 |
| 6 | Heterostructure of 2D MoSe_(2) nanosheets vertically grown on bowllike carbon for high-performance sodium storage显示文摘Transition metal dichalcogenides are attractive anode materials for sodium ion batteries(SIBs)due to their high theoretical capacity and large interlayer spacing.However,its practical application is hampered by the sluggish kinetics of Na^(+)insertion and structure collapse caused by Na^(+)insertion/deinsertion.Herein,the heterostructures of MoSe_(2) nanosheets vertically growing on bowl-like carbon(MoSe_(2)@C)are designed and prepared by a template method coupled with selenization treatment to boost storage sodium performance.The hollow and collapse could provide enough storage space for Na^(+)and alleviate the volume expansion during the charge/discharge processes.MoSe_(2) nanosheets vertically grown on carbon could expose more active sites for adsorbing Na^(+)to enhance the utilization rate of electrode materials.Moreover,building heterostructures by combining different phase components could facilitate Na^(+)diffusion and advance reaction kinetics.Benefiting from these merits,the bowl-like MoSe_(2)@C shows outstanding reversible capacity(356.8 mAh·g^(-1) after 1500 cycles at 1 A·g^(-1))and remarkable rate performance(249.9 mAh·g^(-1)10 A·g^(-1)). | Nianxiang Shi Guangzeng Liu Baojuan Xi Xuguang An Changhui Sun Shenglin Xiong | 2024 | Nano Research2024，17，5： | 0 |
| 7 | Design of heterojunction with components in different dimensions for electrocatalysis applications显示文摘Searching for high-performance and cost-effective catalysts is of particular importance for the practical electrocatalysis applications.The heterojunctions with components in different dimensions show unique physical and chemical properties,which can offer large space for rational design of electrocatalysts.In this paper,we firstly reviewed recently related works,and then proposed a few perspectives on exploring heterojunction for electrocatalysis applications. | Qingquan Kong Xuguang An Jing Zhang Weitang Yao Chenghua Sun | 2022 | Frontiers of physics2022，17，4： | 0 |
| 8 | In-situ embedding CoTe catalyst into 1D-2D nitrogen-doped carbon to didirectionally regulate lithium-sulfur batteries显示文摘Lithium-sulfur(Li-S)batteries have been widely investigated attributed to their advantages of high energy density and cost effectiveness.However,it is still limited by the uncontrolled shuttle effect of the sulfur cathode and the promiscuous dendrite growth over the lithium anode.To handle the above issues,the highly conductive CoTe catalyst is precisely loaded onto nitrogendoped nanotube and graphene-like carbon(CoTe NCGs),which is employed as a bi-functionally integrated host.On the lithium anode,the CoTe NCGs with excellent lithiophilic property effectively regulate the uniform deposition of lithium and achieve the effect of suppressing the disorderly growth of lithium dendrites.On the sulfur cathode,the electrochemical conversion of lithium polysulfides(LiPSs)is catalyzed to mitigate the notorious shuttle effect.In view of the bifunctionality of CoTe NCGs,the assembled full cell can be steadily stable even for 800 cycles at a high rate of 2 C,and the capacity decay rate is only 0.05%per cycle.The areal capacity of 6.0 mAh·cm^(−2) is well retained after 50 cycles under the conditions of high sulfur loading,poor electrolyte(a low electrolyte-to-sulfur ratio,E/S=4.2),and low negative to positive capacity ratio(N/P=1.6:1). | Bin Li Peng Wang Baojuan Xi Ning Song Xuguang An Weihua Chen Jinkui Feng Shenglin Xiong | 2022 | Nano Research2022，15，10： | 0 |
| 9 | WP Nanocrystals on N,P Dual-Doped Carbon Nanosheets with Deeply Analyzed Catalytic Mechanisms for Lithium–Sulfur Batteries显示文摘The use of transition-metal phosphides(TMPs)as catalytic materials to accelerate kinetics of lithium polysulfide(LiPS)conversion has unique advantages.Nevertheless,simple and low-cost preparation strategies are still required for the synthesis of novel TMPs with satisfactory performance.Importantly,the in-depth understanding of the effect of intrinsic interaction between catalytic materials and LiPSs on the promoted kinetics remains limited.Herein,a novel structure of tungsten phosphide(WP)nanocrystals decorated on N,P codoped carbon sheets(WP/NPC)with uniform dispersion is designed by a structure-oriented strategy to promote LiPS redox kinetics.The electrochemical kinetics measurements coupled with density functional theory computations and in situ/ex situ characterizations demonstrate that the strong interaction through W–S bonding and the favorable interfacial charge state of WP-LiPSs promote the nucleation and dissociation of Li2S.Benefiting from this superiority,the WP/NPG-based lithium–sulfur batteries indicate significantly improved electrochemical performance with good cycling life and excellent rate capability.This work provides a methodology for the design of TMP-involved electrode materials and a fundamental understanding of the intrinsic mechanism of catalysis. | Peng Wang Zhengchunyu Zhang Ning Song Xuguang An Jie Liu Jinkui Feng Baojuan Xi Shenglin Xiong | 2023 | CCS Chemistry2023，5，2： | 0 |
| 10 | Preparation and Characterization of Copper-Nickel Bulk Nanocrystals显示文摘Copper-nickel nanoparticle was directly prepared by flow-levitation method(FL) and sintered by vacuum sintering of powder(VSP) method. Several characterizations, such as transmission electron microscopy(TEM), scanning electron microscopy(SEM), X-ray diffraction(XRD), differential thermal analysis(DTA), and energy-dispersive X-ray spectroscopy(EDX) were used to investigate the prepared nanostructures. The results of the study show that FL method could prepare high purity Cu-Ni nanocrystals of uniform spheres with size distribution between 20 and 90 nm. After sintering the bulk nanocrystalline copper-nickel has obvious thermal stability and the surface Webster hardness increases with the rising sintering temperature. At the temperature of 900 ℃, the specimen shows higher surface Webster hardness, which is about two times of traditional materials. When the sintering temperature arrives at 1 000 ℃ the relative density of bulk nanocrystals can reach 97.86 percent. In this paper, the variation tendency of porosity, phase and particles size of bulk along with the changing of sintering temperature have been studied. | 吴小强 TANG Yongjian WANG Lan AN Xuguang YI Zao 孙卫国 | 2014 | Journal of Wuhan University of Technology(Materials Science)2014，29，3： | 0 |
| 11 | Introducing Ce ions and oxygen defects into V_(2)O_(5)nanoribbons for efficient aqueous zinc ion storage显示文摘Cost-effectively,eco-friendly rechargeable aqueous zinc-ion batteries(AZIBs)have reserved widespread concerns and become outstanding candidate in energy storage systems.However,the progress pace of AZIBs suffers from limitation of suitable and affordable cathode materials.Herein,a double-effect strategy is realized in a one-step hydrothermal treatment to prepare V_(2)O_(5)nanoribbons with intercalation of Ce and introduction of abundant oxygen defects(Od-Ce@V_(2)O_(5))to enhance electrochemical performance synergistically.Coupled with the theoretical calculation results,the introduction of Ce ions intercalation and oxygen vacancies in V2O5 structure enhances the electrical conductivity,reduces the adsorption energy of zinc ions,enlarges the interlayer distance,renders the structure more stable,and facilitates rapid diffusion kinetics.As expected,the desirable cathode delivers the reversible capacity of 444 mAh·g^(−1)at 0.5 A·g^(−1)and shows excellent Coulombic efficiency,as well as an extraordinary energy density of 304.9 Wh·kg^(−1).The strategy proposed here may aid in the further development of cathode materials with stable performance for AZIBs. | Mingying Bao Zhengchunyu Zhang Xuguang An Jie Liu Jinkui Feng Baojuan Xi Shenglin Xiong | 2023 | Nano Research2023，16，2： | 0 |
| 12 | Influence of Cold-Rolling Reduction on Microstructure and Tensile Properties of Nuclear FeCrAl Alloy with Low Cr and Nb Contents显示文摘FeCrAl alloy is one of the most promising candidates as an accident-tolerant fuel(ATF)cladding material.Herein,the influence of cold-rolling(CR)reduction on microstructure and tensile properties of the as-annealed FeCrAl alloys,with low Cr and Nb contents,is systematically examined.With the increase in CR reduction,the grain size of FeCrAl alloy is obviously refined after annealing because the increase in stored deformation energy leads to enhanced recrystallization.However,the large CR reductions result in a severe mixed-grain microstructure,significantly reducing the uniform deformability of the FeCrAl alloy.The dislocation density of the as-annealed FeCrAl alloy decreases with the increase in CR reduction,except for the excessive CR reduction of 50%.Moreover,the Laves phases are crushed and dissolved during CR and annealing,as well as large amounts of refined Laves phases are found after large CR reductions.The pinning effect of the Laves phases can significantly improve the strength of FeCrAl alloy.Accordingly,the strengthening mechanisms of FeCrAl alloy consist of fine-grain strengthening,dislocation strengthening and precipitation strengthening.Finally,the FeCrAl alloy,with a CR reduction of 30%,achieves optimal tensile properties.This study can provide theoretical guidance for the industrial production of the FeCrAl alloy. | Hui Wang Biao Guo Xuguang An Yu Zhang | 2022 | Acta Metallurgica Sinica(English Letters)2022，35，12： | 0 |
| 13 | MoSe_(2)/TiO_(2)heterostructure integrated in N-doped carbon nanosheets assembled porous core-shell microspheres for enhanced sodium storage显示文摘Engineering the structure and composition of electrode materials is one of the essential means for achieving excellent electrochemical performance.The rational design of Na+host materials is still a massive challenge for sodium ion batteries(SIBs).Herein,MoSe_(2)/TiO_(2)heterostructure is integrated with N-doped carbon nanosheets to assemble into hierarchical flowerlike porous core-shell microspheres(MoSe_(2)/TiO_(2)@N-C),which is firstly reported by room-temperature stirring coupled with vulcanization treatment.The cavity of the core-shell structure could provide enough storage space for Na+and alleviate the volume expansion during charge/discharge processes.The apertures between nanosheets provide a guarantee for the rapid penetration of electrolyte to enhance the utilization rate of electrode materials.Furthermore,building heterostructures by combining different phase structures can facilitate electron transfer and accelerate reaction kinetics.Benefiting from the synergistic contributions of structure and composition,MoSe_(2)/TiO_(2)@N-C as SIBs anode material shows better reversible capacities of 302.5 mAh·g^(-1)at 1 A·g^(-1)for 400 cycles and 217.4 mAh·g^(-1)at 4 A·g^(-1)for 900 cycles.Strikingly,the reversible capacities can be restored entirely to the initial level after a high current density cycle. | Nianxiang Shi Guangzeng Liu Baojuan Xi Xuguang An Changhui Sun Xinzheng Liu Shenglin Xiong | 2023 | Nano Research2023，16，7： | 0 |
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