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Cd Single Atom as an Electron Mediator in an S-Scheme Heterojunction for Artificial Photosynthesis of H2O2

Advanced Energy Materials 2025年

作者： Ruan, Xiaowen Xu, Minghua Ding, Chunsheng Leng, Jing Fang, Guozhen Meng, Depeng Zhang, Wei Jiang, Zhifeng Ravi, Sai Kishore Cui, Xiaoqiang Yu, Jiaguo State Key Laboratory of Automotive Simulation and Control School of Materials Science and Engineering Key Laboratory of Automobile Materials of MOE Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials Electron Microscopy Center Jilin University Changchun130012 China School of Energy and Environment City University of Hong Kong Kowloon999077 Hong Kong State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian116023 China Institute for Energy Research Jiangsu University Zhenjiang212013 China Laboratory of Solar Fuel Faculty of Materials Science and Chemistry China University of Geosciences Wuhan430074 China

Developing conductor-mediated S-scheme heterojunction photocatalysts imitating natural photosynthetic systems emerges as a promising approach to hydrogen peroxide (H2O2) production. However, achieving precise coupling between two semiconductors with a charge shuttle and modulating the interfacial interactions still remain a significant bottleneck. Herein, we propose a catalyst architecture with a Cd single atom mediated S-scheme heterojunction formed by interfacing CdS and TiO2 nanoparticles. This catalyst exhibits an H2O2 production rate as high as 60.33 µmol g−1min−1 under UV–vis light irradiation, which is attributed to the efficient charge transport at the interface of CdS and TiO2 thanks to the Cd single atom mediated S-scheme. In-situ X-ray photoelectron spectroscopy (XPS) and electron spin resonance (ESR) spin-trapping tests confirm the S-scheme charge transfer route. Femtosecond transient absorption (fs-TA) spectroscopy and other ex-situ characterizations further corroborate the efficient charge transport across the catalyst interface. This work offers a new perspective on constructing single atoms mediated heterojunctions to enhance photocatalytic performance. © 2025 The Author(s). Advanced Energy Materials published by Wiley-VCH GmbH.

关键词： X ray photoelectron spectroscopy

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Effect of Welding Seam Spacing and Relative Bar Wall Thickness of Bus Framework on Joint’s Local Mechanical Property

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Chinese Journal of Mechanical Engineering 2012年第1期25卷 107-113页

作者： NA Jingxin YAN Yakun LIU Haipeng State Key Laboratory of Automobile Dynamics Simulation Jilin UniversityChangchun 130025China College of Mechanical Engineering Jilin UniversityChangchun 130025China

Now the researches concerning integral bus mainly focused on design and analysis of overall mechanical property of bus body, and paid little attention to characteristic of local structures, such as joint, plug welding hole, and bolt connection point, etc. So there is much blindness on the design of local connecting structure. Since integral bus body structure cancels large section longitudinal beam, and uses framework made by welding small section bars together as principal part to bear the whole load when the vehicle works, there are many joints receiving high load in the body structure, and local stress concentration can not be avoided. Under such circumstances, by adopting beam-shell mixed model based on super element technique, and selecting a joint commonly used by bus sidewall, the rule of the effect of bar joint’s welding seam spacing on joint’s local mechanical property is investigated in this paper, and the investigating results show that joints have minimum stress concentration with welding seam spacing of 8 mm. To learn whether the above rule is affected by relative bar wall thickness, many groups of bars with different relative bar wall thicknesses are studied experimentally, and the experimental results show that the joints local stress levels vary with different relative bar wall thicknesses, but the rule of the effect of bar joint’s welding seam spacing on joint’s local stress level remains the same. The research is significant for local structure design of bus joint in the future.

关键词： super element bus body joint mixed model

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Research on Vehicle Stability Control Algorithm for Direct Yaw Moment Control

Research on Vehicle Stability Control Algorithm for Direct Y...

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2010 3rd International Conference on Computer and Electrical Engineering(ICCEE 2010)

作者： Hongyu Zheng Changfu Zong State Key Laboratory of Automobile Dynamics Simulation Jilin University

A vehicle will usually become unstable while it is turned on a low friction road or in high speeds because the lateral force of the tire reaches the physical limit. A direct yaw moment control (DYC) can control vehicle motion by a yaw moment which is actively generated by transversally distributed tire longitudinal forces, and has become one of the most promising means of chassis control for the improvement of vehicle active safety. The best advantage of the DYC is to greatly improve vehicle handling and stability, and DYC shows the expected robustness when vehicle parameters change, such as tyre cornering stiffness and vehicle mass, even with external disturbances. In this paper, a driver-vehicle closed-loop model of 9 DOFs was built. Two control strategies of DYC were proposed, including forward control and single neural cell PID control. The two control methods were compared by simulation based on the vehicle model. The results show that the single neural cell PID control algorithm was more effective on improving the vehicle handling and stability.

关键词： vehicle engineering vehicle stability control direct yaw moment control vehicle dynamic model

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Tire side slip rolling simulation with flexible carcass

Tire side slip rolling simulation with flexible carcass

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3rd IEEE International Conference on Advanced Computer Control, ICACC 2011

作者： Lu, Dang Guo, Konghui State Key Laboratory of Automobile Dynamics Simulation Jilin University Changchun China

ISBN: (纸本)9781424488087

Tire force and moment properties are the function of rolling distance and always show non-steady state behaviors with varying slip angle and vertical load. In this paper, considering flexible carcass, a tire side slip rolling model is presented and some simulations are demonstrated. Such model can serve as benchmark for developing pragmatic semi-physical model and analysis tool for understanding tire stress phenomena in contact patch. © 2011 IEEE.

关键词： Tires

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Research on ABS regulation of electric vehicle driven by in-wheel motors by AMESim co-simulation with Matlab/Simulink

Research on ABS regulation of electric vehicle driven by in-...

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2011 International Conference on System Science, Engineering Design and Manufacturing Informatization, ICSEM 2011

作者： Wang, Qingnian Yang, Yu Jin, Liqiang State Key Laboratory of Automobile Dynamics Simulation Jilin University Changchun China

ISBN: (纸本)9781457702471

According to the unique characteristics of hub motor, this paper is about designing a stable and precise control strategy to realize ABS regulation of EVs. Also, in wheel electric motor torque is the only source to slow down the EV, which is known as the electric brake. This paper involves the AMESim co-simulating with Matlab/Simulink to develop and test the ABS control strategy, which provides better handling to hub motor directly driving EVs. © 2011 IEEE.

关键词： Traction motors

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UniTire steady state model: Overview and applications

UniTire steady state model: Overview and applications

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3rd IEEE International Conference on Advanced Computer Control, ICACC 2011

作者： Lu, Dang Guo, Konghui State Key Laboratory of Automobile Dynamics Simulation Jilin University Changchun China

ISBN: (纸本)9781424488087

UniTire steady state model is a unified non-linear tire model for vehicle dynamic simulation and control under complex wheel motion inputs involving large lateral slip, longitudinal slip, turn-slip and camber. Firstly, brief history of UniTire development was introduced, and then more detailed features of UniTire steady state model were given, thirdly, a tool aiming at parameterization of UniTire was also demonstrated, finally, application scope of UniTire and available interfaces to MBS software were presented. © 2011 IEEE.

关键词： Application programs

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Research on characteristics of external flow in region of passenger car's wheels

Research on characteristics of external flow in region of pa...

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International Conference on Measuring Technology and Mechatronics Automation

作者： Hu, Xingjun Yang, Bo Wang, Jingyu Guo, Peng State Key Laboratory of Automobile Dynamics Simulation Jilin University Changchun Jilin 130022 China

ISBN: (纸本)9780769542966

The technology of computer modeling and simulation is applied to compute and analyze external flow field of the wheels for a medium-class passenger car. Comparisons are drawn between the different results of flow field around the wheels in case that the flow field is modeled and solved with the two different boundary conditions of wheel: one is the stationary wall and the other is the rotating wall. And further we investigate the characteristics of external flow field of rotating wheels. It is concluded that the boundary condition of rotating wheels should be introduced when simulating and testing. © 2010 IEEE.

关键词： Flow fields

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A MEMBRANE ELEMENT MODEL WITH BENDING MODIFICATION FOR ONE STEP INVERSE METHOD

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Acta Mechanica Solida Sinica 2011年第3期24卷 282-288页

作者： Jingxin Na JianJiao Yakun Yan Haipeng Liu State Key Laboratory of Automobile Dynamics Simulation Jilin University Changchun 130025 China FA W- Volkswagen Automobile Co. Ltd. Chanqchun 130011 China College of Mechanical Engineering Jilin University Changchun 130025 China

A membrane element model with bending modification based on element moment equilibrium is proposed for the first time by the authors, who apply the element model in one step inverse method and simulate the forming process of a flower-shaped box using the membrane element model with and without this modification. The numerical results are compared with those of the incremental method to verify the validity of the element model developed in this paper.

关键词： membrane element model one step inverse method moment equilibrium bendingmodification

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Flatness-based vehicle online path following with time-varying constraints of dynamics

Flatness-based vehicle online path following with time-varyi...

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2011 Chinese Control and Decision Conference, CCDC 2011

作者： Yanfeng, Cong Zaitao, Yu Hong, Chen Sawodny, Oliver State Key Laboratory of Automobile Dynamic Simulation JiLin University ChangChun 130025 China ChangChun China Stuttgart University Institute for System Dynamics Stuttgart 70511 Germany

ISBN: (纸本)9781424487363

In this paper, we consider the vehicle online path following under structure environment as object of our researching. By using the rolling method, a trajectory generation method based on flatness and a local path planning algorithm are proposed according to the characters of structure environment. In order to satisfy feasibility and safety, time-varying dynamics constraints are taken into account. The simulation results illustrate the effectiveness of our algorithm. © 2011 IEEE.

关键词： Motion planning

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A model for combined tire cornering and braking forces with anisotropic tread and carcass stiffness

A model for combined tire cornering and braking forces with ...

引用

SAE 2011 Commercial Vehicle Engineering Congress, COMVEC 2011

作者： Guo, Konghui Xu, Nan Lu, Dang Yang, Jie ASCL Jilin University China State Key Laboratory of Automobile Dynamics Simulation Jilin University China 5988 Renmin St. Changchun Jilin Prov. 130025 China

The objective of this paper is to enhance the accuracy of tire model combined tire cornering and braking forces with anisotropic tread and carcass stiffness. The difference of tire longitudinal slip stiffness and cornering stiffness will arouse that the direction of tire resultant shear stress in adhesion region is not the same as that in sliding region. Then the direction of total friction force in the whole tire-road contact patch will change under different combined cornering/braking situations. Generally speaking, there is a basic premise: "the direction of resultant shear stress in sliding region will be the same as that in adhesion region" in the existing tire models, in which the anisotropy of tread and carcass stiffness is neglected. Therefore, these models don't work well when the tire tread and carcass stiffness has a strong anisotropy. The direction of tire shear stress in the adhesion and the sliding region of the contact patch is discussed in this paper and a modification factor is proposed basing on the UniTire semi-physical model to modify the direction of resultant shear stress, which can describe the variation tendency of the total friction force direction in the tire-road contact patch with different combination of cornering and braking conditions. Finally, the UniTire semi-physical tire model contained modification factor is validated by the experimental data, which indicates the accuracy of combined tire forces has been enhanced significantly. Copyright © 2011 SAE International.

关键词： Tires

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