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106篇 您的检索式:作者名="Liejin Guo"
    题名 作者 年代 出处 被引量
1Activating ZnO nanorod photoanodes in visible light by Cu ion implantation显示文摘Meng Wang Feng Ren Guangxu Cai Yichao Liu Shaohua Shen Liejin Guo 2014Nano Research2014,7,3:9
2Industrialization prospects for hydrogen production by coal gasification in supercritical water and novel thermodynamic cycle power generation system with no pollution emission显示文摘Energy conversion and utilization, particularly carbon-based fuel burning in air phase, have caused great environmental pollution and serious problems to society. The reactions in water phase may have the potential to realize clean and efficient energy conversion and utilization. Coal gasification in supercritical water is a typical carbon-based fuel conversion process in water phase, and it takes the advantages of the unique chemical and physical properties of supercritical water to convert organic matter in coal to H2 and CO2. N, S, P, Hg and other elements are deposited as inorganic salts to avoid pollution emission. The State Key Laboratory of Multiphase Flow in Power Engineering has obtained extensive experimental and theoretical results based on coal gasification in supercritical water. Supercritical water fluidized bed reactor was developed for coal gasification and seven kinds of typical feedstock were selected. The hydrogen yield covers from 0.67 to 1.74 Nm3/kg and the carbon gasification efficiency is no less than 97%. This technology has a bright future in industrialization not only in electricity generation but also in hydrogen production and high value-added chemicals. Given the gas yield obtained in laboratory-scale unit, the hydrogen production cost is U.S.$ 0.111 Nm3 when the throughput capacity is 2000 t/d. A novel thermodynamic cycle power generation system based on coal gasification in supercritical water was proposed with the obvious advantages of high coal-electricity conversion efficiency and zero pollutant emission. The cost of U.S.$ 3.69 billion for desulfuration, denitration and dust removal in China in 2013 would have been saved with this technology. Five kinds of heat supply methods are analyzed and the rates of return of investment are roughly estimated. An integrated cooperative innovation center called a new type of high-efficient coal gasification technology and its large-scale utilization was founded to enhance the industrialization of the technology vigorously.GUO LieJin JIN Hui GE ZhiWei LU YouJun CAO ChangQing 2015Science China(Technological Sciences)2015,58,12:7
3ABO_3-based photocatalysts for water splittingJinwen Shi Liejin Guo 2012Progress in Natural Science:Materials International2012,22,6:6
4Enhanced photodynamic therapy of mixed phase TiO2(B)/anatase nanofibers for killing of HeLa cells显示文摘光力学的治疗(太平洋夏季时间) 是使用使药具有感光性有选择地使用治疗指向地点的一个过程,被证明了是为可以发展成癌症的癌症和条件的安全治疗。缩放 Nano 的 TiO < 潜水艇 class= “ a-plus-plus ” > 2 为紫外轻驾驶太平洋夏季时间被认为是潜在的 photosensitizer。在这研究, TiO 的四种类型<潜水艇class=“ a-plus-plus ”> 2 nanofibers 从质子 tri-titanate 被准备( H <潜水艇class=“ a-plus-plus ”> 2 T <潜水艇class=“ a-plus-plus ”> 3 O <潜水艇class=“ a-plus-plus ”> 7 ) nanofiber 。同样获得的 nanofibers 为太平洋夏季时间杀死 HeLa 房间作为有效 photosensitizers 被表明。MTT 试金和流动 cytometry (FCM ) 被执行评估 biocompatibility, apoptotic 房间的百分比,和房间生存能力。同样准备的 TiO 的 non-cytotoxicity < 潜水艇 class= “ a-plus-plus ” > 当紫外照耀不在时的 2 nanofibers 也被表明了。在紫外轻照耀下面, TiO < 潜水艇 class= “ a-plus-plus ” > 2 nanofibers,特别地混合阶段 nanofibers,比 Pirarubicin (THP ) 显示了高得多的杀死房间的效率,它是普通的药导致 HeLa 房间的 apoptosis。我们归功于混合阶段 nanofibers 的高 cellkilling 效率到在 TiO 之间的 bandgap 边比赛和稳定的接口 < 候补选手 class= “ a-plus-plus ” > 2 (B) 和锐钛矿在单个 nanofiber 分阶段执行,它能禁止 photogenerated 电子和洞的再结合。这支持费用分离和转移过程和罐头生产负责杀死 HeLa 房间的更多的反应的氧种类(ROS ) 。Shuchao Zhang Dongjiang Yang Dengwei Jing Hongwei Liu Long Liu Yi Jia Meihua Gao Liejin Guo Ziyang Huo 2014Nano Research2014,7,11:6
5Experimental investigation of particle velocity distributions in windblown sand movement显示文摘With the PDPA(Phase Doppler Particle Analyzer) measurement technology,the probability distributions of particle impact and lift-off velocities on bed surface and the particle velocity distributions at different heights are detected in a wind tunnel. The results show that the probability distribution of impact and lift-off velocities of sand grains can be expressed by a log-normal function,and that of impact and lift-off angles complies with an exponential function. The mean impact angle is between 28° and 39°,and the mean lift-off angle ranges from 30° to 44°. The mean lift-off velocity is 0.81-0.9 times the mean impact velocity. The proportion of backward-impacting particles is 0.05-0.11,and that of backward-entrained particles ranges from 0.04 to 0.13. The probability distribution of particle horizontal velocity at 4 mm height is positive skew,the horizontal velocity of particles at 20 mm height varies widely,and the variation of the particle horizontal velocity at 80 mm height is less than that at 20 mm height. The probability distribution of particle vertical velocity at different heights can be described as a normal function.KANG LiQiang GUO LieJin LIU DaYou 2008Science China(Physics,Mechanics & Astronomy)2008,51,8:4
6Spontaneous photoelectric field-enhancement effect prompts the low cost hierarchical growth of highly ordered heteronanostructures for solar water splitting显示文摘在这研究,潜在地通用的新策略被报导因为 visible-light-active 的大规模、便宜制造高度基于在金字塔形的形态学固有的自发的 photoelectric-field-enhancement 效果订了 heteronanostructures。层次垂直地面向的穿的结构在 visible-light-active 的顶包括活跃分子的合作催化剂为没有一个牺牲的代理人的使用,在中立水的媒介切开的便宜的太阳的水的大乐队差距半导体。Yankuan Wei Jinzhan Su XiaokangWan Liejin Guo Lionel Vayssieres 2016Nano Research2016,9,6:4
7Au@SiO_2 core/shell nanoparticle-decorated TiO_2 nanorod arrays for enhanced photoelectrochemical water splitting显示文摘To improve the separation efficiency of photoinduced charge carries,Au@SiO2nanoparticles(NPs)with core–shell structure were loaded onto the surface of TiO2nanorods grown on fluorine-doped tin oxide substrate by a facile two-step process.The resulted Au@SiO2/TiO2photoanodes were characterized by X-ray diffraction,scanning electron microscopy,transmission electron microscopy,as well as photoelectrochemical measurements.Compared with pristine TiO2nanorod film,the Au@SiO2/TiO2films showed remarkable enhancement in photoelectrochemical water splitting,with incident photonto-current conversion efficiency increasing from 31%to37%at 380 nm at 0.7 V versus saturated calomel electrode.This could be interpreted by the effect of metallic surface plasmon resonance of Au@SiO2NPs,which would generate an intense electromagnetic field with spatially nonhomogenous distributed intensity.As a result,the charge carriers generated in the near-surface region of TiO2nanorods could be easily separated.This modification method based on the effect of metallic surface plasmon resonance for promoted charge carrier separation provides a promising way to develop semiconductor photoelectrodes with high solar water-splitting performance.Jianan Chen Miao Yu Yuhao Wang Shaohua Shen Meng Wang Liejin Guo 2014Chinese Science Bulletin2014,59,18:4
8Simulation of flow across complicated domain between tube bundles by the discrete vortex method显示文摘On the basis of the analysis of numerical simulation methods for the complicated domain between tube bundles, an improved Lagragian discrete vortex method (DVM) and corresponding algorithm are put forward to solve the practical difficulties of flow across tube bundles. With this method the amount of vortices can be reduced considerably, which makes quick calculation possible. Applied to the practical configuration of horizontal tube bundles, the DVM simulation is carried out and compared with the experimental results. Both the transient flow field and the profile of mean velocity and fluctuations are in good agreement with experimental results, which indicate that the DVM is suitable for the simulation of single-phase flow across tube bundles.CHEN Bin, GUO Liejin and YANG Xiaogang(State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China) 2003Progress in Natural Science:Materials International2003,13,3:3
9Sand particle lift-off velocity measurements and numerical simulation of mass flux distributions in a wind tunnel显示文摘Lift-off velocity of saltating sand particles in wind-blown sand located at 1.0 mm above the sand bed surface was measured using a phase Doppler particle analyzer in a wind tunnel. The results show that the probability distribution of lift-off velocity can be expressed as a lognormal function, while that of lift-off angle follows an exponential function. The probability distribution of lift-off angle conditioned for each lift-off velocity also follows an exponential function, with a slope that becomes steeper with increasing lift-off velocity. This implies that the probability distribution of lift-off velocity is strongly dependent on the lift-off angle. However, these lift-off parameters are generally treated as an independent joint probability distribution in the literature. Numerical simulations were carried out to investigate the effects of conditional versus independent joint probability distributions on the vertical sand mass flux distribution. The simulation results derived from the conditional joint probability distribution agree much better with experimental data than those from the independent ones. Thus, it is better to describe the lift-off velocity of saltating sand particles using the conditional joint probability distribution. These results improve our understanding of saltation processes in wind-blown sand.XIAO Fengjun DONG Zhibao GUO Liejin WANG Yueshe LI Debiao 2017Journal of Arid Land2017,9,3:3
10Toward practical photoelectrochemical water splitting and CO_(2) reduction using earth-abundant materials显示文摘Photoelectrochemical(PEC)fuel generation from water splitting and CO_(2)reduction(CO_(2)R)utilizing solar energy holds immense potential to solve the current energy and environmental issues.In the past decades,numerous studies have been devoted to this fast-growing research field,and it is essential to develop efficient photoelectrodes with earth-abundant materials for the practical application of PEC systems.A thorough review of earth-abundant materials and associated devices for PEC fuel generation is beneficial to uncover the inherent obstacles and pave the way for future research.Herein,we summarize the recent progress of earth-abundant light-absorbers and cocatalysts in the PEC systems.The unbiased configurations and scaling-up strategies of PEC devices using earth-abundant materials are examined.A comparison between PEC water splitting and CO_(2)R is carried out to promote better understanding of the design principles for practical materials and devices.Last,the prospects on advanced materials,underlying mechanisms,and reaction systems of PEC water splitting and CO_(2)R are proposed.Yubin Chen Ya Liu Feng Wang Xiangjiu Guan Liejin Guo 2021Journal of Energy Chemistry2021,30,10:3
11Theoretical and experimental advances on heat transfer and flow characteristics of metal foams显示文摘Open cell metal foam can be applied to greatly improve thermal performance of heat sink and heat exchanger,so that it has been widely used in the fields of thermal(or heat)control system of aerospace vehicle and energy utilization system and become a very important topic for research in the aerospace thermophysics field,and more and more attentions have been attracted.The optimal design of metal foam heat transfer devices is based on the understanding the flow and heat transfer characteristics in metal foam.This article reviews some recent progresses of theoretical and experimental researches on heat transfer enhancement and flow characteristics of metal foam.We found that the pore cell simplification models of metal foams generally fall into four categories,among which the most commonly used cell model is Kelivin model.Some exploratory works performed by the current authors are also introduced,such as the effect of boundary conditions on the heat transfer enhancement;the theoretical modelling of interfacial convective heat transfer taking into account heat conduction between foam ligaments;and the flow characteristics under relatively high velocity.The analytical results show that the flow characteristics of metal foam at relatively high speed are completely different from those at low speed,a further thorough study of the heat transfer and flow characteristics of metal foam is necessarily required.In this paper,two types of partial filling techniques are discussed.The heat transfer performance of partially filled tubes was evaluated by both the performance evaluation criteria and the performance evaluation plot of enhanced heat transfer techniques oriented for energy-saving.The results show that the filling type of metal foam have a significant impact on its heat transfer enhancement performance.Therefore,the filling method of metal foam should be further studied,in order to optimize the thermophysical properties of heat transfer devices.WANG Hui GUO LieJin CHEN Kang 2020Science China(Technological Sciences)2020,63,5:2
12Online recognition of the multiphase flow regime显示文摘The key reasons that the present method cannot be used to solve the industrial multi- phase flow pattern recognition are clarified firstly. The prerequisite to realize the online recognition is proposed and recognition rules for partial flow pattern are obtained based on the massive experimental data. The standard templates for every flow regime feature are calculated with self-organization cluster algorithm. The multi-sensor data fusion method is proposed to realize the online recognition of multiphase flow regime with the pressure and differential pressure signals, which overcomes the severe influence of fluid flow velocity and the oil fraction on the recognition. The online recognition method is tested in the practice, which has less than 10 percent measurement error. The method takes advantages of high confidence, good fault tolerance and less requirement of single sensor performance.BAI BoFeng ZHANG ShaoJun ZHAO Liang ZHANG XiMin GUO LieJin 2008Science China(Technological Sciences)2008,51,8:2
13Hierarchical growth of a novel Mn-Bi coupled BiVO4 arrays for enhanced photoelectrochemical water splitting显示文摘Oxygen evolving catalyst (OEC) is a critical determinant for the efficiency of photoelectrochemical (PEC) water splitting. Here we report an approach to depositing a novel manganese borate (Mn-Bi) OER catalyst on BiVO4 nanocone photoanode by photodeposition in sodium borate buffer solution containing Mn(Ⅱ) ions. Due to the spontaneous photo-electric-field-enhancement effect at the vertically oriented BiVO4 nanocone structure, spherical Mn-Bi nanoparticle was selectively photodeposited at the apex of BiVO4 nanocone. Significant improvement of photocurrent was observed for the obtained hierarchical Mn-Bi/BiVO4 photoanode which could be ascribed to enhanced hole injection efficiency, especially in low bias region. It was observed that the injection efficiency of Mn-Bi/BiVO4 is 98% which gave a photocurrent of 0.94 mA/cm^2 at 1.5 V vs. RHE.Lu Wang Jinzhan Su Liejin Guo 2019Nano Research2019,12,3:2
14Room-temperature photodeposition of conformal transition metal based cocatalysts on BiVO4 for enhanced photoelectrochemical water splitting显示文摘Photoelectrochemical(PEC)water splitting using semiconductors offers a promising way to convert renewable solar energy to clean hydrogen fuels.However,due to the sluggish reaction kinetics of water oxidation,significant charge recombination occurred at the photoanode/electrolyte interface and cause decrease of its PEC performance.To reduce the surface recombination,we deposit different transition metal complexes on BiVO4 nanocone arrays by a versatile light driven in-situ two electrode photodeposition approach without applied bias.Conformal cobalt phosphate“Co-Pi”,nickel borate“Ni-Bi”and manganese phosphate“Mn-Pi”complexes were deposited on BiVO4 nanocone arrays to form core-shell structure photoanode,all of which lead to enhanced photoelectrochemical performance.The photocurrent of the Co-Pi/BiVO4 photoanode under front-side illumination for 5 min is increased by 4 folds comparing to that of bare BiVO4 photoanode at 0.6 V vs.RHE,reaching a hole transfer efficiency as high as 94.5%at 1.23 V vs.RHE.The proposed photodeposition strategy is simple and efficient,and can be extended to deposite cocatalyst on other semiconductors with a valence band edge located at a potential more positive than the oxidation potential of transition metal ion in the cocatalyst.Lu Wang Tao Zhang Jinzhan Su Liejin Guo 2020Nano Research2020,13,1:2
15PEM Fuel Cell Performance and its Two-Phase Mass Transport 显示文摘SUN Hong LIU Hongtan GUO Liejin 2005Journal of Power Sources2005,143,12:1
16Experimental Study of Boiling Phenomena and Heat Transfer Performances of FC-72 Over Micro-Pin-Finned Silicon Chips 显示文摘WEI Jinjia Guo Liejin Honda H 2005Heat Mass Transfer2005,41,74:1
17Nanomaterials for renewable hydrogen production,storage and utilizationSamuel S.Mao Shaohua Shen Liejin Guo 2012Progress in Natural Science:Materials International2012,22,6:1
18Study on the synthesis of Ni doped mesoporous TiO2 and its photocatalytic activity for hydrogen evolution in aqueous methanol solution 显示文摘JING Dengwei ZHANG Yaojun GUO Liejin 2005Chemical Physics Letters2005,415,1:1
19Hydrothermal Synthesis of Na0.5La0.5TiO3–LaCrO3 Solid‐Solution Single‐Crystal Nanocubes for Visible‐Light‐Driven Photocatalytic H2 Evolution显示文摘Jinwen Shi Jinhua Ye Zhaohui Zhou Mingtao Li Liejin Guo 2011Chem. Eur. J2011,,:1
20A novel method for the preparation of a highly stable and active CdS photocatalyst with a special surface nanostructure 显示文摘JING Dengwei GUO Liejin 2006J Phys Chem B2006,110,11:1
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