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| 1 | Composition optimized trimetallic PtNiRu dendritic nanostructures as I versatile and active electrocatalysts for alcohol oxidation显示文摘Platinum-based nano crystals are the most effective electrocatalysts for accelerati ng the chemical tran sformatio ns on the anode in direct alcohol fuel cells. To facilitate practical applications and overcome the drawbacks of diverse alcohols, it is significant to develop electrocatalysts with high activities and a wide fuel flexibility. Here, we demonstrate a practicable solution method for fabricating composition tun able trimetallic PtNiRu den dritic nano structures (DNSs) which can serve as versatile and active catalysts for electrooxidatio n of a variety of liquid alcohols. A series of trimetallic DNSs with tun able Pt/Ni/Ru atomic ratios were successfully syn thesized by simply adjusti ng the feeding of precursors. Detailed electrochemical test indicates that, among other compositions, the Pt66Ni27Ru7 DNSs present much superior electroactivity in catalyzing electrooxidation of liquid alcohols in acidic mediums. Specifically, the mass activity and specific activity on the Pt66Ni27Ru7 DNSs, for electrooxidation of methanol, ethanol, and ethylene glycol, are 4.57 and 4.34 times, 3.55 and 3.42 times, and 2.37 and 2.28 times that of the commercial Pt black, respectively. X-ray photoelectron spectroscopy and CO stripping studies reveal the adsorption of CO on these PtNiRu DNSs is much weaker than on pure Pt. Meanwhile, the surface Ru sites can provide neighbouring -OH groups to facilitate the oxidati on and removal of the adsorbed in termediates (-CO) on the surface Pt sites, effectively improvi ng the CO tolera nee of the catalysts. The PtNiRu DNSs also show effectively boosted capacity for breaking the C-C bond in C2-alcohols, showing great potential for fuel-flexible fuel cell applications. | Yan Lu Wei Wang Xiaowei Chen Yuhui Zhang Yanchen Han Yong Cheng Xue-Jiao Chen Kai Liu Yuanyuan Wang Qiaobao Zhang Shuifen Xie | 2019 | Nano Research2019，12，3： | 6 |
| 2 | 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 |
| 3 | Hierarchical yolk-shell structured Li-rich cathode boosting cycling and voltage stabled LIBs显示文摘Despite the high energy density of lithium-rich(Li-rich)cathodes,their implementation is hampered by the unsatisfied rate capacity and poor cycling performance accompanied with substantial voltage decay.To address these issues,the hierarchical yolk-shell structured Li_(1.2)Mn_(0.54)Ni_(0.13)Co_(0.13)O_(2)cathodes(YK-LMNCO)was proposed and synthesized through a facile glycerol assisted solvothermal approach and the following lithiation process.Benefitting from the shortened lithium diffusion lengths and the enhanced tolerance to the large volume variation upon lithium ions intercalation/de-intercalation,the unique structure reciprocates an initial coulombic efficiency of 85.8%,an outstanding capacity retention rate of 89.1%after cycling at 2.0 C for 200 cycles with a minor voltage drop,and a capacity retention rate of 93.8%after cycling at 10.0 C for 500 cycles,85.2%for 1,000 cycles.When assembled with graphite as anode,the YK-LMNCO//graphite full cell shows a remarkable capacity retention rate of 87.2%after cycling at 5.0 C for 50 cycles.Our facile strategy for constructing the yolk-shell structured Li-rich cathodes with high capacity and voltage stability sheds light on synthesizing other lithium storage materials. | Yanchen Liu Yafen Chen Jing Wang Wei Wang Zhiyu Ding Leyuan Li Yang Zhang Yida Deng JunweiWu Yanan Chen | 2022 | Nano Research2022，15，4： | 3 |
| 4 | A preference-based multi-objective building performance optimization method for early design stage显示文摘A large number of cases show that the multi-objective optimization method can significantly improve building performance.The method for multi-objective building performance optimization(BPO)design has achieved rapid development in recent years.However,the BPO method still needs to be improved.Specifically,weak interaction between the optimization process and the decision-making process results in low optimization efficiency,which limits the widespread application of the optimization method in early design stage.In this paper,a new interactive BPO mode is explored to strengthen the interaction between the optimization process and decisionmaking process,and a preference-based multi-objective BPO method is proposed to account for designers'decision preferences during the optimization process,making the objective more controllable,improving the optimization efficiency and ensuring the diversity of solutions.Firstly,this paper illustrates the proposed method in detail,defines the concept of performance preference,expounds the flow of the preference-based multi-objective optimization algorithm,and proposes three indicators to evaluate the algorithm,which includes convergence speed,preference satisfaction rate,and diversity measurement.Secondly,through testing and comparison,it is found that the proposed preference-based algorithm has advantages over the non-preference optimization algorithm(represented by the NSGA-II algorithm).The proposed method leads to faster convergence and higher preference satisfaction,so it is more suitable for the BPO process in the early design stage.Specially,the proposed method can achieve 100%preference satisfaction rate with only 2400 simulations,while the non-preference method can only achieve 20%preference satisfaction rate after 5800 simulations.In this paper,a preference-based multi-objective BPO method is proposed to make the optimization process closely interact with the decision-making process and make the design preferences be accounted during the BPO process,thereby improving the optimization efficiency.In addition,this study first proposes two indicators to measure the quality of optimization results:preference satisfaction rate and diversity measurement.This study aims to guide the development of BPO methods towards providing high satisfaction rate and high quality optimization results. | Borong Lin Hongzhong Chen Yanchen Liu Qiushi He Ziwei Li | 2021 | Building Simulation2021，14，3： | 3 |
| 5 | Ultrasensitive and stable all graphene field-effect transistor-based Hg^(2+)sensor constructed by using different covalently bonded RGO films assembled by different conjugate linking molecules显示文摘As'molecular bridge,'coupling agents can not only realize the covalent connection of composites,but also affect their properties,thus affecting the properties of devices based on them.Herein,leveraging differences in charge conduction properties of the(3-aminopropyl)trimethoxysilane and 5,10,15,20-tetrakis(4-aminophenyl)-21H,23H-porphine caused by conjugacy structural differences,two kinds of layerby-layer assembled smart carbon materials with different electrical properties are obtained at the same reduction temperature.The two graphene ultrathin films are then“planted”on Si/SiO2 substrates,respectively,as semiconductor layer and source/drain electrodes to fabricate an ultra-stable all-graphene field effect transistor(AG-FET).Enabled by the covalent functionalized configuration and the functionally diverse of coupling agents,the AG-FET obtained by this simple method won the high electrical characteristics,the hole,electron mobility,and the shelflife could reach 3.79 cm2/(V·s),3.78 cm2/(V·s),and 18months,respectively.In addition,good material stability and excellent device structure endow the device exceptional stability,electrical stability,and solvent resistance,improving its application prospect in solution phase sensing/detection.Such characteristics could be used to sense,transduce,and respond to external stimuli,especially in solution phase to monitor the important analytes,such as Hg^(2+)in a flowing sewage environment.We believe that such easy-to-manufacture AG-FETs with ultrahigh performance and ultrahigh stability could also show great application prospects in other significant fields. | Mingyuan Sun Congcong Zhang Duo Chen Jian Wang Yanchen Ji Na Liang Haoyang Gao Shanshan Cheng Hong Liu | 2021 | SmartMat2021，2，2： | 2 |
| 6 | Approach to enhancing nitrogen removal performance with fluctuation of influent in an oxidation ditch system显示文摘 | Yanchen Liu Hanchang Shi Zhiqiang Wang Long Fan Huiming Shi | 2012 | Chemical Engineering Journal2012，，： | 1 |
| 7 | Simple Nonlinear Predictive Control Strategy for Chemical Processes Using Sparse Kernel Learning with Polynomial Form显示文摘 | LIU Yi GAO Yanchen GAO Zengliang | | 0，，17： | 1 |
| 8 | Study of operational conditions of simultaneous nitrification and denitrifieation in a Carrousel oxidation ditch for domestic wastewater treat-merit 显示文摘 | Yanchen Liu Hanehang Shi Lan Xia | 2010 | Bioresource Technology2010，101，3： | 1 |
| 9 | Study of operational conditions of simultaneous nitrification and denitrification in a Carrousel oxidation ditch for domestic wastewater treatment 显示文摘 | Liu Yanchen Shi Hanchang Xia Lan | 2010 | Bioresour Technol2010，101，3： | 1 |
| 10 | Estimation and optimization operation in dealing with inflow and infiltration of a hybrid sewerage system in limited infrastructure facility data显示文摘 | Mingkai Zhang He Jing Yanchen Liu Hanchang Shi | 2017 | Frontiers of Environmental Science & Engineering2017，11，2： | 1 |
| 11 | Sulfide elimination by intermittent nitrate dosing in sewer sediments显示文摘The formation of hydrogen sulfide in biofilms and sediments in sewer systems can cause severe pipe corrosions and health hazards, and requires expensive programs for its prevention. The aim of this study is to propose a new control strategy and the optimal condition for sulfide elimination by intermittent nitrate dosing in sewer sediments. The study was carried out based on lab-scale experiments and batch tests using real sewer sediments. The intermittent nitrate dosing mode and the optimal control condition were investigated. The results indicated that the sulfide-intermittent-elimination strategy by nitrate dosing is advantageous for controlling sulfide accumulation in sewer sediment. The oxidation–reduction potential is a sensitive indicator parameter that can reflect the control effect and the minimum N/S(nitrate/sulfide)ratio with slight excess nitrate is necessary for optimal conditions of efficient sulfide control with lower carbon source loss. The optimal control condition is feasible for the sulfide elimination in sewer systems. | Yanchen Liu Chen Wu Xiaohong Zhou David Z.Zhu Hanchang Shi | 2015 | Journal of Environmental Sciences2015，27，1： | 1 |
| 12 | Research on themaximum anti-seismic capability of high earth rock-filldam under strong earthquake 显示文摘 | YANG Gui LIU Kunlin LIU Yanchen | 2013 | Disaster Advances2013，6，1： | 1 |
| 13 | Study of operational conditions of simultaneous nitrification and denitrification in a Carrousel oxidation ditch for domestic wastewater treatment 显示文摘 | LIU Yanchen SHl Hanchang XIA Lan | 2010 | Bioresource Technology2010，101，3： | 1 |
| 14 | Study of operational conditions of simultaneous nitrification and denitrifi - cation in a Carrousel oxidation ditch for domestic wastewater treatment 显示文摘 | Liu Yanchen Shi Hanchang Xia Lan | 2010 | B iore-source Technology2010，101，3： | 1 |
| 15 | Study on a discrete- time dynamic control model to enhance nitrogen re- moval with fluctuation of influent in oxidation ditches显示文摘 | Liu Yanchen Shi Hanchang Shi Hui ming | 2010 | Water Research2010，44，18： | 1 |
| 16 | Approach to enhancing nitrogen removal performance with fluctuation of influent in an oxidation ditch system显示文摘 | Yanchen Liu Hanchang Shi Zhiqiang Wang Long Fan Huiming Shi | 2012 | Chemical Engineering Journal2012，，： | 1 |
| 17 | Overlap area assisted call admission control scheme for communications system显示文摘 | Li Shufeng Grace D Liu Yanchen | 2011 | IEEE Transactions on Aerospace and Electronic Systems2011，47，4： | 1 |
| 18 | Study on a discrete-time dynamic control model to enhance nitrogen removal with fluctuation of influent in oxidation ditches显示文摘 | Liu Yanchen Shi Hanchang Shi Huiming | 2010 | Water Research2010，44，18： | 1 |
| 19 | Inhibition of chemical dose in biological phosphorus and nitrogen removal in simultaneous chemical precipitation for phosphorus removal 显示文摘 | Yanchen Liu Hanchang Shi | 2010 | Bioresource Technology2010，，： | 1 |
| 20 | Inhibition of chemical dose in biological phosphorus and nitrogen removal in simultaneous chemical precipitation for phosphorus removal 显示文摘 | Liu Yanchen Shi Hanchang Li Wenlin | 2011 | Bioresource Technology2011，102，： | 1 |
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