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| 1 | The effects of Haversian fluid pressure and harmonic axial loading on the poroelastic behaviors of a single osteon显示文摘In order to well understand the mechanism of the mechanotransduction in bone,we propose a new model of transverse isotropic and poroelastic osteon cylinder considering Haversian fluid pressure.The analytical pore pressure and velocity solutions are obtained to examine the fluid transport behavior and pressure distribution in a loaded osteon on two different exterior surface cases.Case I is stress free and fully permeable and case II is impermeable.The following are the results obtained.(i) The Haversian fluid may not be ignored because it can enlarge the whole osteonal fluid pressure field,and it bears the external loads together with the solid skeleton.(ii) The increase of both axial strain amplitude and frequency can result in the increase of fluid pressure and velocity amplitudes,while in case II,the frequency has little effect on the fluid pressure amplitude.(iii) Under the same loading conditions,the pressure amplitude in case II is larger than that in case I,while the velocity amplitude is smaller than that in case I.This model permits the linking of the external loads to the osteonal fluid pressure and velocity,which may be a stimulus to the mechanotransduction of bone remodeling signals. | WU XiaoGang CHEN WeiYi GAO ZhiPeng GUO HongMei WANG LiLi | 2012 | Science China(Physics,Mechanics & Astronomy)2012，55，9： | 7 |
| 2 | Fabrication of ultrafine ZnFe2O4 nanoparticles for efficient photocatalytic reduction CO2 under visible light illumination显示文摘A one-pot, solvent-thermal process was used to create the ultrafine ZnFe_2O_4 nanoparticles photocatalyst.During the solvent-thermal process, the in situ self-forming NaCl not only served as a 'cage' to confine the ion diffusion, but also acted as a microreactor for nanocrystallite growth. An average particle size of ~10 nm and a high-specific surface area of~112.9 m^2/g were observed for the ultrafine ZnFe_2O_4 nanoparticles Owing to the synergistic effect of ultrafine particle size, the full utilization of the visible light region and high conduction band(CB) position, ultrafine ZnFe_2O_4 photocatalyst displayed an efficient photocatalytic CO_2 reduction under visible light illumination. Besides, the ultrafine ZnFe_2 O_4 photocatalyst showed high production selectivity for CH_3CHO and C_2H_5OH generation in aqueous CO_2/NaHCO_3 solution. This work may provide a new idea for the synthesis of new high-efficiency photocatalysts. | Jun xiao Weiyi Yang Shuang Gao Caixia Sun Qi Li | 2018 | Journal of Materials Science & Technology2018，34，12： | 6 |
| 3 | Efficient oxygen reduction reaction by a highly porous,nitrogen-doped carbon sphere electrocatalyst through space confinement effect in nanopores显示文摘A highly porous nitrogen-doped carbon sphere(NPC)electrocatalyst was prepared through the carbonization of biomass carbon spheres mixed with urea and zinc chloride in N_(2) atmosphere.The sample carbonized at.1000℃ demonstrates a superior oxygen reduction reaction(ORR)performance over the Pt/C electrocatalyst,while its contents of pyridinic nitrogen and graphitic nitrogen are the lowest among samples synthesized at the same or lower carbonization temperatures.This unusual result is explained by a space confinement effect from the microporous and mesoporous structures in the microflakes,which induces the further reduction of peroxide ions or other oxygen species produced in the first step reduction to water to have the preferred overall four electron reduction ORR process.This work demonstrates that in addition to the amount or species of its aptive sites,the space confinement can be a new approach to enhance the ORR performance of precious-metal-free,nitrogen-doped carbon electrocatalysts. | Zheyang MO Weiyi YANG Shuang GAO Jian Ku SHANG Yajun DING Wuzhu SUN Qi LI | 2021 | Journal of Advanced Ceramics2021，10，4： | 3 |
| 4 | Creation of passivated Nb/N p-n co-doped ZnO nanoparticles and their enhanced photocatalytic performance under visible light illumination显示文摘Passivated niobium/nitrogen(Nb-N) p-n co-doped zinc oxide nanoparticles were created by a simple precipitation process with in-situ self-formed NaCl 'cage' to confine the nanoparticle growth followed by the heat treatment in a flow of ammonia gas. Enhanced optical absorbance into the visible light region was observed in the Nb/N co-doped ZnO nanoparticle photocatalyst due to the Nb/N co-doping effect.It demonstrated a largely enhanced photocatalytic performance in the disinfection of Escherichia coli bacteria under visible light illumination, which could be attributed to the passivated co-doping of NbN to suppress the photogenerated charge carrier recombination on dopants. This robust approach for passivated p-n co-doping may also be applied to other material systems for a wide range of technical applications. | Shuang Gao Weiyi Yang Jun Xiao Bo Li Qi Li | 2019 | Journal of Materials Science & Technology2019，35，4： | 2 |
| 5 | Heat transfer and flow characteristics in a channel with one corrugated wall显示文摘The present study numerically investigates the characteristics of three-dimensional turbulent flow and heat transfer in the channel with one corrugated wall heated with constant temperature by means of large eddy simulation.The corrugated wall is sinusoidal in the streamwise and spanwise directions.The Reynolds number in terms of bulk velocity and channel half-height is fixed at 2800 and the wave amplitude to wavelength ratio is varied in the rangeα/λ=0.01,0.02,0.04 in the streamwise direction andα/λ=0.01,0.02,0.04 in the spanwise direction.The results show that flow separation bubbles appear and near-wall streamwise vortices are generated with larger population in the upslope region of the bottom wall as wave amplitude increases.Compared with flat wall,the corrugated geometry increases the pressure coefficient and decreases the friction coefficient on the corrugated wall,and consequently increases the total drag coefficient owing to the increase of pressure coefficient,as expected,the heat transfer is higher.The waves in the spanwise direction converge the vortices into the trough along the streamwise direction and push them away from the bottom wall.Finally,thermal performance factor is defined and the effects of wave amplitude on the thermal performance are scrutinized. | GAO XiaoMing LI WeiYi WANG JianSheng | 2014 | Science China(Technological Sciences)2014，57，11： | 2 |
| 6 | The preparation of grid-textured V2O5 films and their potential applications in gas sensing显示文摘Novel nano-structured films of V2O5 are prepared by pulsed laser deposition method. Nanoscaled V2O5 ridges lie on SrTiO3 substrate and construct into grid-textured structures. Structural properties of the films have been analyzed by scanning electron microscope, X-ray diffraction and transmission electron microscope. The films have enlarged surface-to-volume ratio due to the ridge-channel structure which makes them applicable to gas sensing. Therefore, gas sensors based on the V2O5 films have been assembled which present reliable sensing properties to gaseous acetone, and ethanol at room temperature. The physical-chemical reactions between adsorbed O2^– and testing gases are the possible reason for this property. | CHENG Rong HUANG WeiYi LIU XiangBo LING Francis Chi Chung GAO Ju NI Hao | 2020 | Science China(Technological Sciences)2020，63，3： | 1 |
| 7 | Hydrous cerium oxides coated glass fiber for efficient and long-lasting arsenic removal from drinking water显示文摘A novel arsenic adsorbent with hydrous cerium oxides coated on glass fiber cloth(HCO/GFC)was synthesized.The HCO/GFC adsorbents were rolled into a cartridge for arsenic removal test.Due to the large pores between the glass fibers,the arsenic polluted water can flow through easily.The arsenic removal performance was evaluated by testing the equilibrium adsorption isotherm,adsorption kinetics,and packed-bed operation.The pH effects on arsenic removal were conducted.The test results show that HCO/GFC filter has high As(Ⅴ)and As(Ⅲ)removal capacity even at low equilibrium concentration.The more toxic As(Ⅲ)in water can be easily removed within a wide range of solution p H without pre-treatment.Arsenic contaminated ground-water from Yangzong Lake(China)was used in the column test.At typical breakthrough conditions(the empty bed contact time,EBCT=2 min),arsenic researched breakthrough at over 24,000 bed volumes(World Health Organization(WHO)suggested that the maximum contaminant level(MCL)for arsenic in drinking water is 10 mg/L).The Ce content in the treated water was lower than 5 ppb during the column test,which showed that cerium did not leach from the HCO/GFC material into the treated water.The relationship between dosage of adsorbents and the adsorption kinetic model was also clarified,which suggested that the pseudo second order model could fit the kinetic experimental data better when the adsorbent loading was relatively low,and the pseudo first order model could fit the kinetic experimental data better when the adsorbent loading amount was relatively high. | Ronghui Li Weiyi Yang Shuang Gao Jianku Shang Qi Li | 2021 | Journal of Advanced Ceramics2021，10，2： | 1 |
| 8 | Sintering and reactive crystal growth of diopside-albite glassceramics from waste glass显示文摘 | Zhang Weiyi Gao Hong Xu Yu | 2011 | Journal of the Eurowan Ceramic SocieW2011，31，9： | 1 |
| 9 | Post-illumination activity of Bi_(2)WO_(6) in the dark from the photocatalytic“memory”effect显示文摘Photocatalysts with the photocatalytic'memory'effect could resolve the intrinsic activity loss of traditional photocatalysts when the light illumination is turned off.Due to the dual requirements of light absorption and energy storage/release functions,most previously reported photocatalysts with the photocatalytic'memory'effect were composite photocatalysts of two phase components,which may lose their performance due to gradually deteriorated interface conditions during their applications.In this work,a simple solvothermal process was developed to synthesize Bi2WO6 microspheres constructed by aggregated nanoflakes.The pure phase Bi_(2)WO_(6) was found to possess the photocatalytic'memory'effect through the trapping and release of photogenerated electrons by the reversible chemical state change of W component in the(WO_(4))^(2–)layers.When the illumination was switched off,Bi_(2)WO_(6) microspheres continuously produced H_(2)O_(2) in the dark as those trapped photogenerated electrons were gradually released to react with O_(2) through the two-electron O_(2) reduction process,resulting in the continuous disinfection of Escherichia coli bacteria in the dark through the photocatalytic'memory'effect.No deterioration of their cycling H2O2 production performance in the dark was observed,which verified their stable photocatalytic'memory'effect. | Weiyi Yang Yan Chen Shuang Gao Licheng Sang Ruoge Tao Caixia Sun Jian Ku Shang Qi Li | 2021 | Journal of Advanced Ceramics2021，10，2： | 1 |
| 10 | Anisodamine restores bowel circulation in burn shock显示文摘 | Sheng Zhi yong Gao Weiyi Guo Zhen rong | 1997 | Burns1997，23，： | 1 |
| 11 | Phenylpropanoid glycoside inhibition of pepsin, trypsin and α-chymotrypsin enzyme activity in Kudingcha leaves from Ligustrum purpurascens显示文摘 | Xuli Wu WenPu Wang Tian Zhu Ting Liang FangQi Lu Weiyi He Haiping Zhang Zhigang Liu ShaoHeng He Kaiping Gao Zhendan He | 2013 | Food Research International2013，，2： | 1 |
| 12 | Combined subsampling and analytical integration for efficient large-scale GW calculations for 2D systems显示文摘Accurate and efficient predictions of the quasiparticle properties of complex materials remain a major challenge due to the convergence issue and the unfavorable scaling of the computational cost with respect to the system size.Quasiparticle GW calculations for two-dimensional(2D)materials are especially difficult.The unusual analytical behaviors of the dielectric screening and the electron self-energy of 2D materials make the conventional Brillouin zone(BZ)integration approach rather inefficient and require an extremely dense k-grid to properly converge the calculated quasiparticle energies.In this work,we present a combined nonuniform subsampling and analytical integration method that can drastically improve the efficiency of the BZ integration in 2D GW calculations. | Weiyi Xia Weiwei Gao Gabriel Lopez-Candales Yabei Wu Wei Ren Wenqing Zhang Peihong Zhang | 2020 | npj Computational Materials2020，，1： | 1 |
| 13 | A novel route for fabrication of machinable fluoramphibole glass-ceramics 显示文摘 | Weiyi Zhang Hong Gao Buo-yu Li | 2006 | Scripta Materialia2006，55，3： | 1 |
| 14 | Tang Characterization of internal and external concentration polarizations during forward osmosis processes显示文摘 | Yiben Gao Yi-Ning Wang Weiyi Li | 2014 | Desalination2014，338，： | 1 |
| 15 | Using the traditional model to evaluate the active force of the human lateral rectus muscle显示文摘The information on the force of extraocular muscles(EOMs)is beneficial for strabismus diagnosis and surgical planning,and a direct and simple method is important for surgeons to obtain these forces.Based on the traditional model,a numerical simulation method was proposed to achieve this aim,and then the active force of the lateral rectus(LR)muscle was successfully simulated when the eye rotated every angle from 0°to 30°in the horizontal plane from the nasal to the temporal side.In order to verify these simulations,the results were compared with the previous experimental data.The comparison shows that the simulation results diverged much more than the experimental data in the range of 0°–10°.The errors were corrected to make the simulation results closer to the experimental data.Finally,a general empirical equation was proposed to evaluate the active force of the LR muscle by fitting these data,which represent the relationship between the simulation forces and the contractive amounts of the LR muscle. | GAO ZhiPeng CHEN WeiYi JING Lin FENG PengFei WU XiaoGang GUO HongMei | 2014 | Science China(Physics,Mechanics & Astronomy)2014，57，5： | 0 |
| 16 | Palladium nanoparticles supported on amine-functionalized glass fiber mat for fixed-bed reactors on the effective removal of hexavalent chromium by catalytic reduction显示文摘Palladium nanoparticles were deposited on the amine-grafted glass fiber mat(GFM-NH_2) catalyst support by a conventional impregnation process followed by the borohydride reduction in aqueous solution at room temperature to create the designed Pd/GFM-NH_2 catalyst. By the use of large size glass fiber mat without nano/mesopores as the catalyst support, the internal mass transfer limitations due to the existence of nano/mesopores on the catalyst support were eliminated and the Pd/GFM-NH_2 catalyst could be easily separated from treated water due to the large size of the catalyst support. Batch experiments demonstrate its good catalytic reduction performance of Cr(VI) with formic acid as the reducing agent.It also demonstrated an efficient Cr(VI) removal and stability in a lab-prepared, packed fixed-bed tube reactor for the continuous treatment of Cr(VI)-containing water. Thus, it has a good potential for the catalytic reduction of Cr(VI) in the water treatment practice. | Yu Gao Wuzhu Sun Weiyi Yang Qi Li | 2018 | Journal of Materials Science & Technology2018，34，6： | 0 |
| 17 | Creation of Sn_(x)Nb_(1−x)O_(2) solid solution through heavy Nb-doping in SnO_(2) to boost its photocatalytic CO_(2) reduction to C_(2+) products under simulated solar illumination显示文摘Photocatalytic CO_(2)reduction driven by green solar energy could be a promising approach for the carbon neutral practice.In this work,a novel defect engineering approach was developed to form the Sn_(x)Nb_(1-x)O_(2)solid solution by the heavy substitutional Nb-doping of SnO_(2)through a robust hydrothermal process.The detailed analysis demonstrated that the heavy substitution of Sn^(4+)by a higher valence Nb^(5+)created a more suitable band structure,a better photogenerated charge carrier separation and transfer,and stronger CO_(2)adsorption due to the presence of abundant acid centers and excess electrons on its surface.Thus,the Sn_(x)Nb_(1-x)O_(2)solid solution sample demonstrated a much better photocatalytic CO_(2)reduction performance compared to the pristine SnO_(2)sample without the need for sacrificial agent.Its photocatalytic CO_(2)reduction efficiency reached~292.47μmol/(g·h),which was 19 times that of the pristine SnO_(2)sample.Furthermore,its main photocatalytic CO_(2)reduction product was a more preferred multi-carbon(C_(2+))compound of C_(2)H_(5)OH,while that of the pristine SnO_(2)sample was a one-carbon(C1)compound of CH_(3)OH.This work demonstrated that,the heavy doping of high valence cations in metal oxides to form solid solution may enhance the photocatalytic CO_(2)reduction and modulate its reduction process,to produce more C_(2+)products.This material design strategy could be readily applied to various material systems for the exploration of high-performance photocatalysts for the solar-driven CO_(2)reduction. | Shuang GAO Haitao GUAN Hongyang WANG Xinhe YANG Weiyi YANG Qi LI | 2022 | Journal of Advanced Ceramics2022，11，9： | 0 |
| 18 | Ionic Potential:A General Material Criterion for the Selection of Highly Efficient Arsenic Adsorbents显示文摘Arsenic is a highly toxic element and its contamination in water bodies is a worldwide problem.Arsenic adsorption with metal oxides/hydroxides-based adsorbents is an effective approach to remove arsenic species from water for the health of both human beings and the environment.However,no material criterion had been proposed for the selection of potential candidates.Equally puzzling is the fact that no clear explanation was available on the poor arsenic adsorption performance of some commonly used adsorbents,such as active carbon or silica.Furthermore,in-depth examination was also not available for the dramatically different competing adsorption effects of various anions on the arsenic adsorption.Through the arsenic adsorption mechanism study on these highly efficient arsenic adsorbents,we found that ionic potential could be used as a general material criterion for the selection of highly efficient arsenic adsorbents and such a criterion could help us to understand the above questions on arsenic adsorbents.This material criterion could be further applied to the selection of highly efficient adsorbents based on ligand exchange between their surface hydroxyl groups and adsorbates in general,which may be used for the prediction of novel adsorbents for the removal of various contaminations in water. | Ronghui Li Weiyi Yang Yu Su Qi Li Shian Gao Jian Ku Shang | 2014 | Journal of Materials Science & Technology2014，30，10： | 0 |
| 19 | Prediction of protected band edge states and dielectric tunable quasiparticle and excitonic properties of monolayer MoSi_(2)N_(4)显示文摘The electronic structure of two-dimensional(2D)materials are inherently prone to environmental perturbations,which may pose significant challenges to their applications in electronic or optoelectronic devices.A 2D material couples with its environment through two mechanisms:local chemical coupling and nonlocal dielectric screening effects.The local chemical coupling is often difficult to predict or control experimentally.Nonlocal dielectric screening,on the other hand,can be tuned by choosing the substrates or layer thickness in a controllable manner.Therefore,a compelling 2D electronic material should offer band edge states that are robust against local chemical coupling effects.Here it is demonstrated that the recently synthesized MoSi_(2)N_(4)is an ideal 2D semiconductor with robust band edge states protected from capricious environmental chemical coupling effects.Detailed many-body perturbation theory calculations are carried out to illustrate how the band edge states of MoSi_(2)N_(4)are shielded from the direct chemical coupling effects,but its quasiparticle and excitonic properties can be modulated through the nonlocal dielectric screening effects.This unique property,together with the moderate band gap and the thermodynamic and mechanical stability of this material,paves the way for a range of applications of MoSi_(2)N_(4)in areas including energy,2D electronics,and optoelectronics. | Yabei Wu Zhao Tang Weiyi Xia Weiwei Gao Fanhao Jia Yubo Zhang Wenguang Zhu Wenqing Zhang Peihong Zhang | 2022 | npj Computational Materials2022，，1： | 0 |
| 20 | Highly selective photocatalytic CO_(2) reduction to ethylene in pure water by Nb_(2)O_(5) nanoparticles with enriched surface –OH groups under simulated solar illumination显示文摘Photocatalytic CO_(2) reduction to valuable chemical compounds could be a promising approach for carbon-neutral practice.In this work,a simple and robust thermal decomposition process was developed with ammonium carbonate((NH4)2CO3)as both precipitation agent and sacrificial template to produce fine Nb_(2)O_(5) nanoparticles with the rich existence of surface hydroxyl(–OH)groups.It was found by density functional theory(DFT)calculations and experiments that the rich existence of the surface–OH groups enhanced the adsorption of both reactants(CO_(2) and H_(2)O molecules)for the photocatalytic CO_(2) reduction on these fine Nb_(2)O_(5) nanoparticles,and the highly selective conversion of CO_(2) to the high-value chemical compound of ethylene(C_(2)H_(4),~68μmol·g^(−1)·h^(−1) with~100%product selectivity)was achieved under simulated solar illumination without usage of any sacrificial agents or noble metal cocatalysts.This synthesis process may also be readily applied as a surface engineering method to enrich the existence of the surface–OH groups on various metal oxide-based photocatalysts for a broad range of technical applications. | Haoyu Zhang Shuang Gao Haitao Guan Weiyi Yang Qi Li | 2023 | Journal of Advanced Ceramics2023，12，8： | 0 |
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