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Improved Plasmonic Hot‑Electron Capture in Au Nanoparticle/Polymeric Carbon Nitride by Pt Single Atoms for Broad‑Spectrum Photocatalytic H_(2)Evolution

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Nano-Micro Letters 2023年第8期15卷 423-435页

作者： Manyi Gao fenyang tian Xin Zhang Zhaoyu Chen Weiwei Yang Yongsheng Yu MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001HeilongjiangPeople’s Republic of China Space Environment Simulation Research Infrastructure Harbin Institute of TechnologyHarbin 150001People’s Republic of China

ABSTRACT Rationally designing broad-spectrum photocatalysts to harvest whole visible-light region photons and enhance solar energy conversion is a“holy grail”for researchers,but is still a challenging ***,based on the common polymeric carbon nitride(PCN),a hybrid co-catalysts system comprising plasmonic Au nanoparticles(NPs)and atomically dispersed Pt single atoms(PtSAs)with different functions was constructed to address this *** the dual co-catalysts decorated PCN(PtSAs–Au_(2.5)/PCN),the PCN is photoexcited to generate electrons under UV and short-wavelength visible light,and the synergetic Au NPs and PtSAs not only accelerate charge separation and transfer though Schottky junctions and metal-support bond but also act as the co-catalysts for H_(2) ***,the Au NPs absorb long-wavelength visible light owing to its localized surface plasmon resonance,and the adjacent PtSAs trap the plasmonic hot-electrons for H_(2) evolution via direct electron transfer ***,the PtSAs–Au_(2.5)/PCN exhibits excellent broad-spectrum photocatalytic H_(2) evolution activity with the H_(2) evolution rate of 8.8 mmol g^(−1) h^(−1) at 420 nm and 264μmol g^(−1) h^(−1) at 550 nm,much higher than that of Au_(2.5)/PCN and PtSAs–PCN,*** work provides a new strategy to design broad-spectrum photocatalysts for energy conversion reaction.

关键词： Polymeric carbon nitride Au nanoparticles Pt single atoms Photocatalytic H2 evolution Broad-spectrum photocatalysts

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Activating interfacial S sites of MoS_(2) boosts hydrogen evolution electrocatalysis

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Nano Research 2022年第3期15卷 1809-1816页

作者： Shuo Geng fenyang tian Menggang Li Yequn Liu Jie Sheng Weiwei Yang Yongsheng Yu Yanglong Hou Laboratory for Space Environment and Physical Science Research Center of Basic Space ScienceHarbin Institute of TechnologyHarbin 150001China MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001China Analytical Instrumentation Center State Key Laboratory of Coal ConversionInstitute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001China Beijing Key Laboratory for Magnetoelectric Materials and Devices(BKL-MMD) Beijing Innovation Center for Engineering Science and Advanced Technology(BIC-ESAT)School of Materials Science and EngineeringPeking UniversityBeijing 100871China

The hydrogen evolution reaction(HER)of molybdenum disulfide(MoS_(2))is limited in alkaline and acid solution because the active sites are on the finite edge with extended basal plane remaining ***,we activated the interfacial S sites by coupling with Ru nanoparticles on the inert basal plane of MoS_(2)*** density functional theory(DFT)calculation and experimental results show that the interfacial S electronic structure was *** the results of∆G H*demonstrate that the adsorption of H on the MoS_(2)was also *** the advantage of interfacial S sites activation,the Ru-MoS_(2)needs only overpotential of 110 and 98 mV to achieve 10 mA·cm^(–2)in both 0.5 M H_(2)SO_(4)and ^(1) M KOH solution,*** strategy paves a new way for activating the basal plane of other transition metal sulfide electrocatalysts for improving the HER performance.

关键词： electronic structure interfacial S sites d-band center hydrogen evolution reaction

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共掺杂三维石墨烯的制备及其电催化析氢性能的研究

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功能材料 2020年第3期51卷 3128-3132,3163页

作者：吴智君田奋扬刘玉琪欧安琪罗洁中南林业科技大学材料科学与工程学院

选择天然石墨鳞片为原料,采用改进的Hummers法制备出氧化石墨(GO),再以硫脲、硫酸亚铁和氯化镍为改性剂,利用化学还原法和自组装法制备了氮、硫、铁、镍共掺杂三维石墨烯电极材料。通过扫描电子显微镜(SEM)、X射线衍射(XRD)、X射线能谱(... 详细信息

选择天然石墨鳞片为原料,采用改进的Hummers法制备出氧化石墨(GO),再以硫脲、硫酸亚铁和氯化镍为改性剂,利用化学还原法和自组装法制备了氮、硫、铁、镍共掺杂三维石墨烯电极材料。通过扫描电子显微镜(SEM)、X射线衍射(XRD)、X射线能谱(EDS)等测试手段对材料进行分析表征,研究了不同因素对其析氢反应活性(HER)的影响,并通过均匀试验设计确定了制备的最佳工艺条件。结果表明:所制备的电极材料具有丰富的孔结构和完整的三维结构,石墨烯片层间距为0.3734 nm,并且无明显垛叠团聚,在酸性条件下显示出较高的HER活性,在电流密度为10 mA/cm2时,析氢过电位为-158 mV,塔菲尔(Tafel)斜率为74.33 mV/dec。

关键词：三维石墨烯共掺杂电催化析氢反应

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Overview and Prospect of Distributed Energy P2P Trading

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Energy Engineering 2025年第1期122卷 379-404页

作者： Jiajia Liu Mingxing tian Xusheng Mao School of Automation and Electrical Engineering Lanzhou Jiaotong UniversityLanzhou730070China

After a century of relative stability in the electricity sector,the widespread adoption of distributed energy resources,along with recent advancements in computing and communication technologies,has fundamentally altered how energy is consumed,traded,and *** change signifies a crucial shift as the power system evolves from its traditional hierarchical organization to a more decentralized *** the heart of this transformation are innovative energy distribution models,like peer-to-peer(P2P)sharing,which enable communities to collaboratively manage their energy *** effectiveness of P2P sharing not only improves the economic prospects for prosumers,who generate and consume energy,but also enhances energy resilience and *** allows communities to better leverage local resources while fostering a sense of collective responsibility and collaboration in energy ***,there is still no extensive implementation of such sharing models in today’s *** on distributed energy P2P trading is still in the exploratory stage,and it is particularly important to comprehensively understand and analyze the existing distributed energy P2P trading *** paper contributes with an overview of the P2P markets that starts with the network framework,market structure,technical approach for trading mechanism,and blockchain technology,moving to the outlook in this field.

关键词： Distributed energy P2P market mechanisms classification and comparison

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Modeling and Capacity Configuration Optimization of CRH5 EMU On-Board Energy Storage System

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Energy Engineering 2025年第1期122卷 307-329页

作者： Mingxing tian Weiyuan Zhang Zhaoxu Su School of Automation and Electrical Engineering Lanzhou Jiaotong UniversityLanzhou730070China

In the context of the“dual carbon”goals,to address issues such as high energy consumption,high costs,and low power quality in the rapid development of electrified railways,this study focused on the China Railways High-Speed 5 Electric Multiple Unit and proposed a mathematical model and capacity optimization method for an onboard energy storage system using lithium batteries and supercapacitors as storage ***,considering the electrical characteristics,weight,and volume of the storage media,a mathematical model of the energy storage system was ***,to tackle problems related to energy consumption and power quality,an energy management strategy was proposed that comprehensively considers peak shaving and valley filling and power quality by controlling the charge/discharge thresholds of the storage *** optimization adopted a bilevel programming model,with the series/parallel number of storage modules as variables,considering constraints imposed by the Direct Current to Direct Current converter,train load,and *** improved Particle Swarm Optimization algorithm and linear programming solver were used to solve specific *** results show that the proposed onboard energy storage system can effectively achieve energy savings,reduce consumption,and improve power qualitywhile meeting the load and space limitations of the train.

关键词： Electrified railway regenerative braking bi-level programming on-board energy storage power quality capacity configuration

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PPy-TiO_2/CSC的制备及太阳光催化处理没食子酸生产废水研究

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水处理技术 2018年第5期44卷 48-52页

作者：田奋扬王海俨黄滔刘佳伟付子婧罗洁中南林业科技大学材料科学与工程学院湖南长沙410004

以工业级纳米Ti O_2为原料,吡咯作为聚合物单体,采用化学氧化法和原位聚合法制备了聚吡咯(PPy)改性催化剂。以椰壳活性炭(CSC)作为载体,制得PPy-Ti O_2/CSC,对其进行了表征。在模拟太阳光照下,对没食子酸生产废水的处理进行了研究,考察... 详细信息

以工业级纳米Ti O_2为原料,吡咯作为聚合物单体,采用化学氧化法和原位聚合法制备了聚吡咯(PPy)改性催化剂。以椰壳活性炭(CSC)作为载体,制得PPy-Ti O_2/CSC,对其进行了表征。在模拟太阳光照下,对没食子酸生产废水的处理进行了研究,考察了双氧水加入量、p H、光照时间和催化剂用量对COD的影响,进行了L_9(3~4)正交实验。结果表明,PPy-Ti O_2在可见光区的吸收比纳米Ti O_2强,发生红移;改性后Ti O_2晶型未改变。优化工艺条件为:在500W氙灯光照下,催化剂加入量为5 g/L,6 m L/L的质量分数3%的H_2O_2,p H=7,光照2.5 h。最终没食子酸生产废水光催化降解率可达88.52%,且在重复使用过程中能保持较好的光催化活性。

关键词： PPy-TiO2/CSC催化剂聚吡咯(PPy) TiO2 椰壳活性炭(CSC) 太阳光没食子酸生产废水

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Research status and prospects of the fractal analysis of metal material surfaces and interfaces

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 20-38页

作者： Qinjin Dai Xuefeng Liu Xin Ma Shaojie tian Qinghe Cui Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology BeijingBeijing 100083China Beijing Laboratory of Metallic Materials and Processing for Modern Transportation University of Science and Technology BeijingBeijing 100083China Laboratory for Advanced Materials Processing of Ministry of Education University of Science and Technology BeijingBeijing 100083China School of Mechanical and Electrical Engineering Xinjiang Institute of EngineeringUrumqi 830023China

As a mathematical analysis method,fractal analysis can be used to quantitatively describe irregular shapes with self-similar or self-affine *** analysis has been used to characterize the shapes of metal materials at various scales and *** methods make it difficult to quantitatively describe the relationship between the regular characteristics and properties of metal material surfaces and ***,fractal analysis can be used to quantitatively describe the shape characteristics of metal materials and to establish the quantitative relationships between the shape characteristics and various properties of metal *** the perspective of two-dimensional planes and three-dimensional curved surfaces,this paper reviews the current research status of the fractal analysis of metal precipitate interfaces,metal grain boundary interfaces,metal-deposited film surfaces,metal fracture surfaces,metal machined surfaces,and metal wear *** relationship between the fractal dimensions and properties of metal material surfaces and interfaces is *** from three perspectives of fractal analysis,namely,research scope,image acquisition methods,and calculation methods,this paper identifies the direction of research on fractal analysis of metal material surfaces and interfaces that need to be *** is believed that revealing the deep influence mechanism between the fractal dimensions and properties of metal material surfaces and interfaces will be the key research direction of the fractal analysis of metal materials in the future.

关键词： metal material surfaces and interfaces fractal analysis fractal dimension homogeneity

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Optimizing battery deployment: Aging trajectory prediction enabling homogenous performance grouping

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Journal of Energy Chemistry 2025年第1期100卷 565-577页

作者： Shuquan Wang Feng Gao Zhan Ma Hao tian Yusen Zhang School of Control Science and Engineering Shandong University Key Lab of Power System Intelligent Dispatch and Control of Ministry of Education Shandong University

As battery deployments in electric vehicles and energy storage systems grow, ensuring homogeneous performance across units is crucial. We propose a multi-derivative imaging fusion(MDIF) model, employing advanced imaging and machine learning to predict battery aging trajectories from minimal initial data, thus facilitating effective performance grouping before deployment. Utilizing a derivative strategy and Gramian Angular Difference Field for dimensional enhancement, the MDIF model uncovers subtle predictive features from discharge curve data after only ten cycles. The architecture includes a parallel convolutional neural network with lateral connections to enhance feature integration and *** on a self-developed dataset, the model achieves an average root-mean-square error of 0.047 Ah and an average mean absolute percentage error of 1.60%, demonstrating high precision and *** robustness is further validated through transfer learning on two publicly available datasets, adapting with minimal retraining. This approach significantly reduces the testing cycles required, lowering both time and costs associated with battery testing. By enabling precise battery behavior predictions with limited data, the MDIF model optimizes battery utilization and deployment strategies, enhancing system efficiency and sustainability.

关键词： Lithium-ion battery Battery prognostics Fusion model Convolutional neural network Transfer learning

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Fenton试剂-太阳光催化氧化法联合处理造纸黑液

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环境科学与技术 2018年第3期41卷 94-98页

作者：田奋扬王海俨刘佳伟付子婧张飞虎罗洁中南林业科技大学材料科学与工程学院湖南长沙410004

以钛酸丁酯作为TiO_2的前驱体,利用硝酸镧和硫脲作为掺杂源,采用溶胶-凝胶法制备了La、N/S共掺杂TiO_2光催化剂,并采用紫外-可见分光光度计(UV-Vis)和X射线衍射仪(XRD)对所制备的光催化剂进行了分析表征,然后利用Fenton试剂氧化法预处... 详细信息

以钛酸丁酯作为TiO_2的前驱体,利用硝酸镧和硫脲作为掺杂源,采用溶胶-凝胶法制备了La、N/S共掺杂TiO_2光催化剂,并采用紫外-可见分光光度计(UV-Vis)和X射线衍射仪(XRD)对所制备的光催化剂进行了分析表征,然后利用Fenton试剂氧化法预处理与太阳光催化氧化法联合对造纸黑液进行了降解处理,分别考察了光照时间、光催化剂用量、处理液p H值、H_2O_2加入量等各因素对光催化降解率的影响,在单因素研究的基础上进行了L9(3~4)正交试验。结果表明,所制备的共掺杂TiO_2为锐钛矿晶型,吸收带红移有较强的可见光吸收,大大提高了对太阳光能的利用率。造纸黑液经Fenton试剂氧化预处理后,在500 W氙灯(模拟太阳光)下光催化氧化降解的最佳工艺条件为:50 m L造纸黑液,H_2O_2加入量为0.6 m L;反应液p H=5;光照时间90 min;催化剂用量0.04 g,在上述工艺条件下太阳光催化降解率可达到73%,处理效果大大优于市售进口TiO_2光催化剂和单一光催化降解过程。

关键词：光催化溶胶-凝胶法造纸黑液 Fenton试剂太阳光

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Coordinated Control Strategy of New Energy Power Generation System with Hybrid Energy Storage Unit

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Energy Engineering 2025年第1期122卷 167-184页

作者： Yun Zhang ZifenHan Biao tian Ning Chen Yi Fan School of Mechano-Electronic Engineering Xidian UniversityXi’an710071China Electric Power Control Center State Grid Gansu Electric Power CompanyLanzhou730030China Electric Power Control Center State Grid Gansu Electric Power Company Zhangye Power Supply BranchZhangye734000China

The new energy power generation is becoming increasingly important in the power *** as photovoltaic power generation has become a research hotspot,however,due to the characteristics of light radiation changes,photovoltaic power generation is unstable and random,resulting in a low utilization rate and directly affecting the stability of the power *** solve this problem,this paper proposes a coordinated control strategy for a newenergy power generation system with a hybrid energy storage unit based on the lithium iron phosphate-supercapacitor hybrid energy storage ***,the variational mode decomposition algorithm is used to separate the high and low frequencies of the power signal,which is conducive to the rapid and accurate suppression of the power fluctuation of the energy storage ***,the fuzzy control algorithm is introduced to balance the power between energy *** this paper,the actual data is used for simulation,and the simulation results show that the strategy realizes the effective suppression of the bus voltage fluctuation and the accurate control of the internal state of the energy storage unit,effectively avoiding problems such as overshoot and over-discharge,and can significantly improve the stability of the photovoltaic power generation systemand the stability of the Direct Current *** is of great significance to promote the development of collaborative control technology for photovoltaic hybrid energy storage units.

关键词： Photovoltaic power suppression hybrid energy storage unit variationalmodal decomposition fuzzy control power distribution control

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