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| 1 | Adsorption behavior of ammonium by a bioadsorbent-Boston ivy leaf powder显示文摘The adsorption behaviors of ammonium ions from aqueous solution by a novel bioadsorbent,the Boston ivy(Parthenocissus tricuspidata) leaf powder(BPTL) were investigated.The SEM images and FT-IR spectra were used to characterize BPTL.The mathematical models were used to analyze the adsorption kinetics and isotherms.The optimum pH range for ammonium adsorption by BPTL was found to be 5-10.The adsorption reached equilibrium at 14 hr,and the kinetic data were well fitted by the Logistic model.The intraparticle diflusion was the main rate-controlling step of the adsorption process.The high temperature was favorable to the ammonium adsorption by BPTL,indicating that the adsorption was endothermic.The adsorption equilibrium fitted well to both the Langmuir model and Freundlich model,and the maximum monolayer adsorption capacities calculated from Langmuir model were 3.37,5.28 and 6.59 mg N/g at 15,25 and 35°C,respectively,which were comparable to those by reported minerals.Both the separation factor(RL) from the Langmuir model and Freundlich exponent(n) suggested that the ammonium adsorption by BPTL was favorable. Therefore,the Boston ivy leaf powder could be considered a novel bioadsorbent for ammonium removal from aqueous solution. | Haiwei Liu Yuanhua Dong Haiyun Wang Yun Liu | 2010 | Journal of Environmental Sciences2010，22，10： | 7 |
| 2 | Microstructure and domain engineering of lithium niobate crystal films for integrated photonic applications显示文摘Recently,integrated photonics has attracted considerable interest owing to its wide application in optical communication and quantum technologies.Among the numerous photonic materials,lithium niobate film on insulator(LNOI)has become a promising photonic platform owing to its electro-optic and nonlinear optical properties along with ultralow-loss and high-confinement nanophotonic lithium niobate waveguides fabricated by the complementary metal-oxide-semiconductor(CMOS)-compatible microstructure engineering of LNOI.Furthermore,ferroelectric domain engineering in combination with nanophotonic waveguides on LNOI is gradually accelerating the development of integrated nonlinear photonics,which will play an important role in quantum technologies because of its ability to be integrated with the generation,processing,and auxiliary detection of the quantum states of light.Herein,we review the recent progress in CMOS-compatible microstructure engineering and domain engineering of LNOI for integrated lithium niobate photonics involving photonic modulation and nonlinear photonics.We believe that the great progress in integrated photonics on LNOI will lead to a new generation of techniques.Thus,there remains an urgent need for efficient methods for the preparation of LNOI that are suitable for large-scale and low-cost manufacturing of integrated photonic devices and systems. | Dehui Sun Yunwu Zhang Dongzhou Wang Wei Song Xiaoyan Liu Jinbo Pang Deqiang Geng Yuanhua Sang Hong Liu | 2020 | Light(Science & Applications)2020，9，1： | 7 |
| 3 | Microbubble resonators combined with a digital optical frequency comb for high-precision air-coupled ultrasound detectors显示文摘Fast and sensitive air-coupled ultrasound detection is essential for many applications such as radar,ultrasound imaging,and defect detection.Here we present a novel approach based on a digital optical frequency comb(DOFC)technique combined with high-Q optical microbubble resonators(MBRs).DOFC enables precise spectroscopy on resonators that can trace the ultrasound pressure with its resonant frequency shift with femtometer resolution and sub-microsecond response time.The noise equivalent pressure of air-coupled ultrasound as low as 4.4 m Pa∕pHz is achieved by combining a high-Q(~3×10~7)MBR with the DOFC method.Moreover,it can observe multi-resonance peaks from multiple MBRs to directly monitor the precise spatial location of the ultrasonic source.This approach has a potential to be applied in 3 D air-coupled photoacoustic and ultrasonic imaging. | JINGSHUN PAN BIN ZHANG ZHENGYONG LIU JIAXIN ZHAO YUANHUA FENG LEI WAN ZHAOHUI LI | 2020 | Photonics Research2020，8，3： | 6 |
| 4 | High-conductivity free-standing Li_(6)PS_(5)Cl/poly(vinylidene difluoride)composite solid electrolyte membranes for lithium-ion batteries显示文摘Bulk-type all-solid-state batteries(ASSBs)using sulfide solid electrolyte are considered as a promising alternative to commercial lithium-ion batteries owing to their high energy density and safety.However,cell energy density is often comparatively low due to use of a thick solid electrolyte separator and a lithium alloy as anode.For achieving high-performance ASSBs,creating a thin free-standing electrolyte with high-conductivity and good cycling stability against lithium anode is essential.In this work,we present Li_(6)PS_(5)Cl/poly(vinylidene difluoride)(LPSCl/PVDF)composite electrolytes prepared by a slurry method.The influence of the PVDF content on the microstructure,morphology,ionic conductivity and activation energy of the LPSCl/PVDF electrolytes is systematically investigated.Free-standing LPSCl/PVDF membranes with a thickness of 100-120 mm and a high ionic conductivity of about 1·10^(-3) S cm^(-1) at 25℃ are obtained.After adding PVDF to the LPSCl electrolyte,the cycling stability of the LPSCl electrolyte against lithium metal improves significantly.Therefore,LPSCl/PVDF composite electrolytes are promising candidates to be used in ASSBs. | Shuo Wang Xue Zhang Sijie Liu Chengzhou Xin Chuanjiao Xue Felix Richter Liangliang Li Lizhen Fan Yuanhua Lin Yang Shen Jurgen Janek Ce-Wen Nan | 2020 | Journal of Materiomics2020，6，1： | 5 |
| 5 | WSe2 2D p-type semiconductor-based electronic devices for information technology:Design,preparation,and applications显示文摘The pioneering exfoliation of monolayer tungsten diselenide has greatly inspired researchers toward semiconducting applications.WSe2 belongs to a family of transition-metal dichalcogenides.Similar to graphene,WSe2 and analogous dichalcogenides have layered structures with weak van der Waals interactions between two adjacent layers.First,the readers are presented with the fundamentals of WSe2,such as types,morphologies,and properties.Here,we report the characterization principles and practices such as microscopy,spectroscopy,and diffraction.Second,the methods for obtaining high-quality WSe2,such as exfoliation,hydrothermal and chemical vapor deposition,are briefly listed.With advantages of light weight,flexibility,and high quantum efficiency,2D materials may have a niche in optoelectronics as building blocks in p-n junctions.Therefore,we introduce a state-of-the-art demonstration of heterostructure devices employing the p-type WSe2 semiconductor.The device architectures include field-effect transistors,photodetectors,gas sensors,and photovoltaic solar cells.Due to its unique electronic,optical,and energy band properties,WSe2 has been increasingly investigated due to the conductivity of the p-type charge carrier upon palladium contact.Eventually,the dynamic research on WSe2 and van der Waals heterostructures is summarized to arouse the passion of the 2D research community. | Qilin Cheng Jinbo Pang Dehui Sun Jingang Wang Shu Zhang Fan Liu Yuke Chen Ruiqi Yang Na Liang Xiheng Lu Yanchen Ji Jian Wang Congcong Zhang Yuanhua Sang Hong Liu Weijia Zhou | 2020 | InfoMat2020，2，4： | 5 |
| 6 | Microstructures and characteristics of deep trap levels in ZnO varistors doped with Y_2O_3显示文摘In this paper discussions on ZnO based varistor ceramics doped with different ratios of Y2O3 are presented.Analysis on the phase and microstructures of the samples indicates that an additional phase is detected in the samples doped with Y2O3,and the average grain size of the specimens decreases from about 9.2μm to 4.5μm,with an increase in the addition of Y2O3 from 0 mol%to 3 mol%.The corresponding varistor’s voltage gradient markedly increases from 462 V/mm to 2340 V/mm,while the nonlinear coefficient decreases from 22.3 to 11.5,respectively.Furthermore,the characteristics of deep trap levels in these ZnO samples are investigated by measuring their dielectric spectroscopies.The trap energy level and capture cross section evaluated by relaxation peak of the Cole-Cole plot vary slightly as the addition of Y2O3 increases.These traps may be ascribed to the intrinsic defects of ZnO lattice. | LIU Jun 1 ,HU Jun 1 ,HE JinLiang 1 ,LIN YuanHua 2 &LONG WangCheng 1 1State Key Laboratory of Power Systems,Department of Electrical Engineering,Tsinghua University,Beijing 100084,China 2State Key Laboratory of New Ceramics and Fine Processing,Department of Material Science and Engineering,Tsinghua University, Beijing 100084,China | 2009 | Science China(Technological Sciences)2009，52，12： | 5 |
| 7 | DESIGN OF QUASI-CYCLIC LDPC CODES BASED ON EUCLIDEAN GEOMETRIES显示文摘A new method for constructing Quasi-Cyclic (QC) Low-Density Parity-Check (LDPC) codes based on Euclidean Geometry (EG) is presented. The proposed method results in a class of QC-LDPC codes with girth of at least 6 and the designed codes perform very close to the Shannon limit with iterative decoding. Simulations show that the designed QC-LDPC codes have almost the same performance with the existing EG-LDPC codes. | Liu Yuanhua Niu Xinliang Wang Xinmei Fan Jiulun | 2010 | Journal of Electronics(China)2010，27，3： | 4 |
| 8 | Observer-based robust predictive control of singular systems with time-delay and parameter uncertainties显示文摘The problem of observer-based robust predictive control is studied for the singular systems with norm-bounded uncertainties and time-delay,and the design method of robust predictive observer-based controller is proposed.By constructing the Lyapunov function with the error terms,the infinite time domain'min-max'optimization problems are converted into convex optimization problems solving by the linear matrix inequality (LMI),and the sufficient conditions for the existence of this control are derived.It is proved that the robust stability of the closed-loop singular systems can be guaranteed by the initial feasible solutions of the optimization problems,and the regular and the impulse-free of the singular systems are also guaranteed.A simulation example illustrates the efficiency of this method. | Liu Xiaohua Yang Yuanhua | 2009 | Journal of Systems Engineering and Electronics2009，20，3： | 3 |
| 9 | High-temperature Electric Properties of Polycrystalline La-doped CaMnO_3 Ceramics显示文摘Polycrystalline La-doped CaMnO3 ceramics have been prepared by a solid-state sintering method.Analysis of microstructure and phase composition indicates that the addition of La can prohibit the further growth of grain,and no impurity phase appears.The results revealed that the La doping can lead to a large change of the activation energy(from 0.22 to 0.02 eV),and thus result in a marked increase in electric conductivity of 2-4 orders of magnitude.The power factor can reach about 1.5×10-4 W·m-1·K-2 in a wide temperature range,which potentially make them attractive for n-type high-temperature thermoelectric materials. | Jinle Lan Yuanhua Lin Ao Mei Cewen Nan Yong Liu Boping Zhang Jingfeng Li | 2009 | Journal of Materials Science & Technology2009，25，4： | 3 |
| 10 | Influence of metal ions on sulfonamide antibiotics biochemical behavior in fiber coexisting system显示文摘Metal ions and fiber are common compounds in the livestock and poultry manure,which will affect the fate of organic compounds in aqueous environment. However,limited research has addressed the effect of coexisting metal ions and fiber on the biodegradation of sulfonamide antibiotics. Accordingly, a compositing study was performed to assess the effect of metal ions(Fe3+and Cu2+) on the biodegradation of sulfadimethoxine sodium salt(SDM) in the presence of fiber. The enhanced adsorption of SDM onto fiber in the presence of metal ions can be attributed to the π+–π electron donor acceptor(EDA) interaction. The microbial(Phanerochaete chrysosprium) could easily attach onto fiber forming attached microbial, and the degradation rates of SDM of immobilized bacteria in the presence of Fe3 +were 100%, which were significantly higher than those of free bacteria(45%). This study indicates that Fe3 +and fiber could enhance the biodegradation of SDM. Fiber acts as adsorbent, carrier, and substrate which enhanced the removal of SDM. | Lan Zhang Ruihuan Chen Yun Liu Youjun Deng Zhongpei Li Yuanhua Dong | 2019 | Journal of Environmental Sciences2019，31，6： | 3 |
| 11 | Calcium ion pinned vanadium oxide cathode for high-capacity and long-life aqueous rechargeable zinc-ion batteries显示文摘Rechargeable aqueous zinc ion batteries (ZIBs),with the easy operation,cost effectiveness,and high safety,are emerging candidates for high-energy wearable/portable energy storage systems.Unfortunately,the unsatisfactory energy density and undesired long-term cycling performance of the cathode hinder the development of ZIBs.Here,we report the chemical preintercalation of a small amount of calcium ions into V2O5 as the cathode material.The cathode of Ca0.04V2O5·1.74H2O (CVO)was demonstrated to have a high specific capacity of 400 mA h g^-1at the current density of 0.05 A g^-1and 187 mA h g^-1at 10 A g^-1,along with impressive capacity retention (100%capacity retention at 10 A g^-1 for 3,000 cycles).Meanwhile,the CVO//Zn battery exhibits a high energy density of 308 Wh kg^-1and a power density of 467 W kg^-1at 0.5 A g^-1.The superior performance originates from the pinning effect of the calcium ions and the lubricating effect of the structural water.The energy storage mechanism of the CVO cathode was also investigated in detail.The new phase (Zn3(OH)2V2O7·2H2O) generated upon cycling participates in the electrochemical reaction and thus contributes to the excellent electrochemical performance.The small amount of Ca^2+ pre-inserted into the interlayer of V2O5 sheds light on constructing cathodes with high energy density for ZIBs. | Min Du Feng Zhang Xiaofei Zhang Wentao Dong Yuanhua Sang Jianjun Wang Hong Liu Shuhua Wang | 2020 | Science China Chemistry2020，63，12： | 2 |
| 12 | High Performance Supercapacitors from Hierarchical Porous Carbon Aerogels Based on Sliced Bread显示文摘 | Pin Hao Guanwei Cui Xifeng Shi Junfeng Xie Xinyuan Xia Yuanhua Sang C. P. Wong Hong Liu Bo Tang | 2017 | Chinese Journal of Chemistry2017，35，5： | 2 |
| 13 | Dispersion of concentrated aqueous neodymia–yttria–alumina mixture with ammonium poly(acrylic acid) as dispersant显示文摘 | Yaohui Lv Wei Zhang Jie Tan Yuanhua Sang Haiming Qin Jinlian Hu Liuniu Tong Hong Liu Jiyang Wang Robert I Boughton | 2010 | Journal of Alloys and Compounds2010，，6： | 1 |
| 14 | High Temperature Thermoelectric Properties of Dy-doped CaMnO_3 Ceramics显示文摘Dy-doped CaMnO_3 ceramics have been synthesized by co-precipitation method combined with the solid-state reaction.Phase composition and microstructure analysis indicate that high density and pure CaMnO_3 phase can be achieved.The electric conductivity can be enhanced by Dy doping,and result in a slight increase of the thermal conductivity.The highest dimensionless figure of merit ZT of 0.15 has been obtained at 973 K for x = 0.02 sample,which is about 4 times larger than that of the pure CaMnO_3,which indicate that CaMnO_3can be a promising candidate for n-type thermoelectric material at high temperature. | Bin Zhan Jinle Lan Yaochun Liu Yuanhua Lin Yang Shen Cewen Nan | 2014 | Journal of Materials Science & Technology2014，30，8： | 1 |
| 15 | Intracellular pH-responsive iron-catechin nanoparticles with osteogenic/anti-adipogenic and immunomodulatory effects for efficient bone repair显示文摘Osteoimmunomodulation was identified as a new and important strategy to enhance osteogenic differentiation together with other osteogenic approaches.However,approaches regulating osteogenic differentiation and macrophage polarization to remodel an osteoinductive microenvironment are separate and complicated.Therefore,the design and synthesis of one biomaterial that couples the osteogenic performance and immunomodulatory ability is a major challenge for efficient bone repair.In this study,self-assembled iron-catechin nanoparticles(Fe-cat NPs)were designed based on the coordinated reaction between iron ions and catechin and synthesized via a facile one-pot strategy.Interestingly,Fe-cat NPs show intracellular pH-responsive disassembly and release catechin molecules under the low pH of lysosomes after endocytosis.This strategy delivers catechin intracellularly and then enhances the osteogenic differentiation while inhibits the adipogenic differentiation of human adipose-derived stem cells(hADSCs).More importantly,Fe-cat NPs remodel the osteogenic immune microenvironment by resisting inflammation and promoting M2 polarization of macrophages.As a promising metal-organic nanodrug,the intracellular pH-responsive Fe-cat NPs significantly enhance the therapeutic effect of bone regneration by orchestrating osteogenic differentiation and immunomodulation,which may have great potential in bone tissue engineering. | Ying Kong Feng Liu Baojin Ma Wenhan Wang Liang Li Xiaoying Xu Zhaoyang Sun Hongru Yang Yuanhua Sang Dong Li Gang Li Chao Liu Shuhua Wang Hong Liu | 2022 | Nano Research2022，15，2： | 1 |
| 16 | Strong phonon localization in PbTe with dislocations and large deviation to Matthiessen’s rule显示文摘Dislocations can greatly enhance the figure of merit of thermoelectric materials by prominently reducing thermal conductivity.However,the evolution of phonon modes with different energies when they propagate through a single dislocation is unknown.Here we perform non-equilibrium molecular dynamics simulation to study phonon transport in PbTe crystal with dislocations by excluding boundary scattering and strain coupling effect.The frequency-dependent heat flux,phonon mode analysis,and frequency-dependent phonon mean free paths(MFPs)are presented.The thermal conductivity of PbTe with dislocation density on the order of 10^(15)m^(−2) is decreased by 62%.We provide solid evidence of strong localization of phonon modes in dislocation sample.Moreover,by comparing the frequency-dependent phonon MFPs between atomistic modeling and traditional theory,it is found that the conventional theories are inadequate to describe the phonon behavior throughout the full phonon spectrum,and large deviation to the well-known semi-classical Matthiessen’s rule is observed.These results provide insightful guidance for the development of PbTe based thermoelectrics and shed light on new routes for enhancing the performance of existing thermoelectrics by incorporating dislocations. | Yandong Sun Yanguang Zhou Jian Han Wei Liu Cewen Nan Yuanhua Lin Ming Hu Ben Xu | 2019 | npj Computational Materials2019，，1： | 1 |
| 17 | Seroepidemiology and genetic characterization of hepatitis E virus in the northeast of china显示文摘 | Yuanhua Yu Jingwei Sun Meixiang Liu Liliang Xia Chenyan Zhao Tim J Harrison Youchun Wang | 2009 | Infection Genetics and Evolution2009，，4： | 1 |
| 18 | Numerical Study of Air Nozzles on Mild Combustion for Application to Forward Flow Furnace显示文摘An attempt was made to extend mild combustion to forward flow furnace, such as the refinery and petrochemical tube furnace. Three dimensional numerical simulation was carried out to study the performance of this furnace. The Eddy Dissipation Concept(EDC) model coupled with the reaction mechanism DRM-19 was used. The prediction showed a good agreement with the measurement. The effect of air nozzle circle(D), air nozzle diameter(d), air nozzle number(N), and air preheating temperature(Tair) on the flow, temperature and species fields, and the CO and NO emissions was investigated. The results indicate that there are four zones in the furnace, viz.: a central jet zone, an ignition zone, a combustion reaction zone, and a flue gas zone, according to the distribution profiles of H_2 CO and OH. The central jet entrains more flue gas in the furnace upstream with an increasing D while the effect of D is negligible in the downstream. The air jet momentum increases with a decreasing d or an increasing Tair, and entrains more flue gas. The effect of N is mainly identified near the burner exit. More heat is absorbed in the radiant section and less heat is discharged to the atmosphere with a decreasing d and an increasing N as evidenced by the flue gas temperature. The CO and NO emissions are less than 50 μL/L and 10 μL/L, respectively, in most of conditions. | Liu Bo Wang Yuanhua Xu Hong | 2016 | China Petroleum Processing & Petrochemical Technology2016，18，1： | 1 |
| 19 | Im- provement of the mechanical properties of nano-TiO2/po- ly(vinyl alcohol) composites by enhanced interaction be- tween nanofiller and matrix 显示文摘 | Lou Yuanhua Liu Meihong Miao Xiaowei | 2010 | Polymer Composites2010，31，7： | 1 |
| 20 | High-surface-area CoTMPP/C synthesized by ultrasonic spray pyrolysis for PEM fuel cell electrocatalysts显示文摘 | Liu Hansan Song Chaojie Tang Yuanhua | 2007 | Electrochim Acta2007，52，13： | 1 |
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