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Developing Ni-based CO2 methanation catalysts with enhanced low-temperature activities via constructing advantageous mesoporous CeO2 nanosphere support

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Ceramics International 2025年第17期51卷 23908-23924页

作者： Lu, Tianmin Zhu, Zehui Luo, Xue Lian, Linshui Wu, Cai-e Cao, Zhen Zhao, Xin Wu, Mei Xu, Leilei Chen, Mindong Collaborative Innovation Centre of the Atmospheric Environment and Equipment Technology School of Environmental Science and Engineering Nanjing University of Information Science & Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Nanjing210044 China College of Light Industry and Food Engineering Nanjing Forestry University Nanjing210037 China College of Chemical Engineering and Environmental Chemistry Weifang University Weifang261061 China National & Local Joint Engineering Research Centre for Mineral Salt Deep Utilization Huaiyin Institute of Technology Huaian223003 China School of Environment and Energy Engineering Anhui Jianzhu University Hefei230009 China

In this work, the advantageous mesoporous CeO2 nanosphere with large specific surface area up to 190.4 m2/g was facilely prepared using an improved hydrothermal method. The obtained mesoporous CeO2 nanosphere was used as the support for Ni-based CO2 methanation catalysts. The effects of Ni loading, structural properties, and redox characteristics on the catalytic performances were systematically investigated. The catalyst with 20 wt% Ni loading supported on mesoporous CeO2 nanosphere demonstrated exceptional low-temperature activity. A comprehensive suite of characterization techniques, including XRD, N2 physisorption, SEM, XPS, H2-TPR, CO2-TPD, in-situ DRIFTS, and online TPSR, were utilized to elucidate the underlying reasons for the superior performance. The superior activity of the Ni-based catalyst was attributed to the large specific surface area, mesoporous structure, and excellent redox properties of the mesoporous CeO2 nanosphere support. In contrast, Ni-based catalysts supported on commercial materials (e.g., SiO2, Al2O3, CeO2) exhibited poor low-temperature performance due to severe thermal sintering of metallic Ni active sites and inferior redox properties. Therefore, the present mesoporous CeO2 nanosphere with large specific surface area, advantageous redox property, and abundant surface oxygen vacancies are promising supports for Ni-based catalysts, enhancing low-temperature CO2 methanation performance and potentially benefiting other reactions. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Mesopores

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Stress Path Analysis of Deep-Sea Sediments Under the Compression-Shear Coupling Load of Crawler Collectors

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Journal of Ocean University of China 2023年第1期22卷 65-74页

作者： ZHANG Ning MA Ning YIN Shiyang CHEN Xuguang SONG Yuheng School of Water Resources and Hydropower Engineering North China Electric Power UniversityBeijing 102206China Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering Ocean University of ChinaQingdao 266100China Laboratory for Marine Geology Qingdao National Laboratory for Maine Science and TechnologyQingdao 266100China

The mechanical properties of deep-sea sediments during the driving process of crawler collectors are essential factors in the design of mining *** this study,a crawler load is divided into a normal compression load and a horizontal shear ***,the internal stress state of sedimentary soil is examined through a theoretical calculation and finite element numerical ***,the driving of crawlers is simulated by changing the relative spatial position between the load and stress unit,obtaining the stress path of the soil *** on the calculation results,the effect of the horizontal shear load on the soil stress response is analyzed at different depths,and the spatial variation law of the soil stress path is *** results demonstrate that the horizontal shear load has a significant effect on the rotation of the principal stress,and the reverse rotation of the principal stress axis becomes obvious with the increase in the burial *** stress path curve of the soil is different at various *** spatial variation rule of the stress path of the shallow soil is complex,whereas the stress path curve of the deep soil tends to shrink as the depth *** stress path of the corresponding depth should be selected according to the actual research purpose and applied to the laboratory test.

关键词： deep-sea sediment crawler collector compression-shear coupling load stress path principal stress axis direction

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Rhenium-boosted electrocatalytic activity and durability of pyrolytic IrO_(2)for acidic oxygen evolution

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Rare Metals 2024年第12期43卷 6758-6764页

作者： Hong-Wei Lv Hong-Bin Zhao Xin-Yuan Peng Zhi-Guo Ye Quan-Bo Huang Xue-Tao Yuan Duo-Sheng Li Zhong Jin School of Materials Science and Engineering Nanchang Hangkong UniversityNanchang330063China General Research Institute for Nonferrous Metals Beijing100088China China GRINM Group Co. Ltd.Beijing100088China National Engineering Research Center for Environment-Friendly Metallurgy in Producing Premium Non-Ferrous Metals GRINM Resources and Environment Tech.Co.Ltd.Beijing Engineering Research Center of Strategic Nonferrous Metals Green Manufacturing TechnologyBeijing100088China State Key Laboratory of Coordination Chemistry MOE Key Laboratory of Mesoscopic ChemistryMOE Key Laboratory of High Performance Polymer Materials and TechnologyJiangsu Key Laboratory of Advanced Organic MaterialsSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing210023China

IrO2,renowned for its exceptional stability in acidic media,suffers from limited electrocatalytic activity for the oxygen evolution reaction(OER).To enhance the intrinsic OER activity while preserving ultrahigh stability,here we report the synthesis of rhenium(Re)heteroatom incorporated pyrolytic IrO_(2),using the pyrolytic decomposition method.

关键词： method acidic stability

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Development of Wind Wake-effect Minimizing Model Based on Combination of Dung Beetle Optimization, Extreme Learning Machine, and Genetic Algorithms

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Sensors and Materials 2024年第3期36卷 1047-1064页

作者： Qu, Li-Nan Li, Hao-Peng Lin, Hsiung-Cheng Li, Ling-Ling State Key Laboratory of Reliability and Intelligence of Electrical Equipment Hebei University of Technology Tianjin300401 China China Electrical Equipment Research Institute of Science and Technology Co. Ltd. Shanghai200436 China School of Electronic and Information Engineering Hebei University of Technology Tianjin300401 China Department of Electronic Engineering National Chin-Yi University of Technology Taichung41170 Taiwan

The wake effect caused by a wind turbine can reduce the wind speed and add turbulence to the wind, thus impacting the power generation efficiency. To effectively enhance the generated power in wind farms, we propose an optimal layout model that is combined with artificial intelligence optimizing algorithms. First, the adaptive genetic algorithm (AGA) is used to optimize the collected wind speed and direction distribution data as the optimization basis. Second, the extreme learning machine (ELM) based on Monte Carlo simulation is used to establish a guidance for determining the turbine relocation from the optimization basis. Simultaneously, the dung beetle optimization (DBO) algorithm is developed to improve the performance of ELM for achieving the optimal solution. The proposed model was tested at six different wind farms and under three different wind condition distribution settings. The simulation results verify that the model is superior to existing algorithms in reducing the wakeeffect impact as well as optimizing the wind farm layout. © 2024 M Y U Scientific Publishing Division. All rights reserved.

关键词： Genetic algorithms

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Strain‑Induced Surface Interface Dual Polarization Constructs PML‑Cu/Bi_(12)O_(17)Br_(2) High‑Density Active Sites for CO_(2) Photoreduction

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Nano-Micro Letters 2024年第5期16卷 169-183页

作者： Yi Zhang Fangyu Guo Jun Di Keke Wang Molly Meng‑Jung Li Jiayu Dai Yuanbin She Jiexiang Xia Huaming Li School of Chemistry and Chemical Engineering Institute for Energy ResearchSchool of the Environment and Safety EngineeringJiangsu UniversityZhenjiang 212013People’s Republic of China State Key Laboratory Breeding Base of Green Chemistry‑Synthesis Technology College of Chemical EngineeringZhejiang University of TechnologyHangzhou 310014People’s Republic of China College of Science and Hunan Key Laboratory of Extreme Matter and ApplicationsNational University of Defense TechnologyChangsha 410073People’s Republic of China Department of Applied Physics The Hong Kong Polytechnic UniversityHung HomHong KongPeople’s Republic of China School of Chemistry and Chemical Engineering National Special Superfine Powder Engineering Research CenterNanjing University of Science and TechnologyNanjing 210094People’s Republic of China Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Zhejiang Normal UniversityJinhua 321004People’s Republic of China

The insufficient active sites and slow interfacial charge trans-fer of photocatalysts restrict the efficiency of CO_(2) *** synchronized modulation of the above key issues is demanding and ***,strain-induced strategy is developed to construct the Bi–O-bonded interface in Cu porphyrin-based monoatomic layer(PML-Cu)and Bi_(12)O_(17)Br_(2)(BOB),which triggers the surface interface dual polarization of PML-Cu/BOB(PBOB).In this multi-step polarization,the built-in electric field formed between the interfaces induces the electron transfer from con-duction band(CB)of BOB to CB of PML-Cu and suppresses its reverse ***,the surface polarization of PML-Cu further promotes the electron converge in Cu *** introduction of PML-Cu endows a high density of dispersed Cu active sites on the surface of PBOB,significantly promoting the adsorption and activation of CO_(2) and CO *** conversion rate of CO_(2) photoreduction to CO for PBOB can reach 584.3μmol g-1,which is 7.83 times higher than BOB and 20.01 times than *** work offers valuable insights into multi-step polarization regulation and active site design for catalysts.

关键词： Bi_(12)O_(17)Br_(2) Porphyrin CO_(2)photoreduction Polarization Active sites

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Lightning Current Sweep Damage Test System Based on Energy Conversion 19th

Lightning Current Sweep Damage Test System Based on Energy C...

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19th Annual Conference of China Electrotechnical Society, ACCES 2024

作者： Duan, Zemin Tong, Chen Qu, Minglei Huang, Yeyuan School of Electrical Engineering and Automation Hefei University of Technology Hefei China National Key Laboratory of Electromagnetic Information Control and Effects Hefei China Key Laboratory of Strong Electromagnetic Environment Protection Technology Aviation Science and Technology Hefei China Key Laboratory of Aircraft Lightning Protection of Anhui Province Hefei China

ISBN: (纸本)9789819608966

To solve the problem of difficulty in simulating dynamic sweep damage of lightning current, this paper established a new lightning current sweep damage test system using motors and launch wheels. The speed of the test piece and the temperature during the damage process were measured by high-speed cameras and infrared thermometers. The speed of the test piece was 34 m/s and the temperature exceeded 600 °C. At the same time, a new lightning current component C generator topology and control method were proposed. The load current and inductor current were used to form a double closed-loop PI negative feedback controller to ensure that the load current meets the standard output requirements. The study in this paper has certain guiding significance for the direct effect sweep damage assessment of composite materials and the design of lightning current generators. © Beijing Paike Culture Commu. Co., Ltd. 2025.

关键词： High speed cameras

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Health benefits from the rapid reduction in ambient exposure to air pollutants after China's clean air actions:progress in efficacy and geographic equality

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national science Review 2024年第2期11卷 103-113页

作者： Tao Xue Ruohan Wang Meng Wang Yanying Wang Dan Tong Xia Meng Conghong Huang Siqi Ai Fangzhou Li Jingyuan Cao Mingkun Tong Xueqiu Ni Hengyi Liu Jianyu Deng Hong Lu Wei Wan Jicheng Gong Shiqiu Zhang Tong Zhu Institute of Reproductive and Child Health National Health Commission Key Laboratory of Reproductive Health/Department of Epidemiology and Biostatistics Ministry of Education Key Laboratory of Epidemiology of Major Diseases(PKU) School of Public Health Peking University Health Science Centre State Environmental Protection Key Laboratory of Atmospheric Exposure and Health Risk Management and Center for Environment and Health Peking University Advanced Institute of Information Technology Peking University Department of Epidemiology and Environmental Health School of Public Health and Health ProfessionsUniversity at Buffalo State Key Joint Laboratory of Environment Simulation and Pollution Control College of Environmental Sciences and EngineeringPeking University Department of Earth System Science Tsinghua University School of Public Health Key Laboratory of Public Health Safety of the Ministry of Education and Key Laboratory of Health Technology Assessment of the Ministry of HealthFudan University College of Land Management Nanjing Agricultural University National&Local Joint Engineering Research Center for Rural Land Resources Use and Consolidation Clean Air Asia

Clean air actions （CAAs） in China have been linked to considerable benefits in public ***,whether the beneficial effects of CAAs are equally distributed geographically is *** high-resolution maps of the distributions of major air pollutants (fine particulate matter[PM2.5]and ozone[O3]) and population,we aimed to track spatiotemporal changes in health impacts from,and geographic inequality embedded in,the reduced exposures to PM2.5and O3from 2013 to *** used a method established by the Global Burden of Diseases *** analyzing the changes in loss of life expectancy（LLE） attributable to PM2.5and O3,we calculated the gain of life expectancy （GLE） to quantify the health benefits of the air-quality ***,we assessed the geographic inequality embedded in the GLE using the Gini index （GI）.Based on risk assessments of PM2.5and O3,during the first stage of CAAs（2013 to 2017）,the mean GLE was 1.87 *** of the sum of the GLE was disproportionally distributed in about one quarter of the population exposed （GI 0.44）.During the second stage of CAAs（2017 to 2020）,the mean GLE increased to 3.94 months and geographic inequality decreased （GI 0.18）.According to our assessments,CAAs were enhanced,from the first to second stages,in terms of not only preventing premature mortality but also ameliorating health *** enhancements were related to increased sensitivity to the health effects of air pollution and synergic control of PM2.5and *** findings will contribute to optimizing future CAAs.

关键词： clean air action public health inequality fine particulate matter ozone

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The profile of sound speed and dissolved oxygen in the polymetallic nodules depositional area in the Western Pacific

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Journal of Oceanology and Limnology 2023年第6期41卷 2090-2100页

作者： Bowen LI Yonggang JIA Zhihan FAN Kai LI College of Oceanography and Space Information China University of PetroleumQingdao 266580China Laboratory for Marine Geology Qingdao National Laboratory for Marine Science and TechnologyQingdao 266100China Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering Ocean University of ChinaQingdao 266100China

With the consumption of terrestrial metal resources,the exploitation of deep-sea polymetallic nodule minerals has been widely concerned around the ***,the environmental impact of deep-sea polymetallic nodule mining cannot be ***,duo to the lacks in stable and safe deep-sea(the depth>1000 m)vertical profile observation systems and consequently in long-term in-situ observation data,the sound speed and dissolved oxygen and the other water environment factors in the deposition areas of polymetallic nodules remains poorly *** this study,a deep-sea in-situ observation system was designed and deployed,and the water environment data of the polymetallic nodule deposition area were collected and *** shows that the dissolved oxygen in the depth of 0–600 m was mainly affected by biological factors,while that in the area deeper than 600 m was affected by physical *** sound speed in the water body was mainly affected by temperature and *** depths below 840 m,the sound speed is mainly controlled by temperature,and at depths between 840 m and 5700 m,the sound speed is mainly controlled by *** correlations of sound speed *** and *** were regressed into *** resuspension of sediments rich in various metals may result in the reduction of dissolved oxygen and the improvement of redox *** environmental impact caused by a single sediment resuspension could last for 24 h or *** findings enrich the understanding of the background value of the water environment in the polymetallic nodule deposition area.

关键词： deep sea dissolved oxygen redox potential sound speed conductivity

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Large linear electrostrain of acceptor-donor Co-doped ZnO films

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Journal of Materials science & technology 2022年第14期109卷 12-19页

作者： Chang Gao Yu Zhao Weili Li Yulong Qiao Zhao Wang Lu Jing Jie Sheng Wei-Dong Fei School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China National Key Laboratory of Science and Technology on Precision Heat Processing of Metals Harbin Institute of TechnologyHarbin 150001China Laboratory for Space Environment and Physical Science Research Center of Basic Space ScienceHarbin Institute of TechnologyHarbin 150001China State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001China

In this paper we present the effective strategy of Fe^(3+)and Li^(+)co-doping to enhance the electrostrain of ZnO thin ***_(0.88)(Fe_(0.06)Li_(0.06))O thin film exhibits an excellent d_(33)^(*)value of 415 pm/V and large linear electrostrain of 0.68%after thermal-electric *** the X-ray diffraction and first principle calculation results have indicated that the Fe^(3+)and Li^(+)ions are inclined to adopt a preferential alignment along the edges approximately parallel to[001]direction in the zinc-oxygen tetrahedron and constitute a defect dipole(ionic pairs).It is considered that the local lattice distortion and the electric field-triggered polarization extension and rotation generated by preferential distributed Fe^(3+)-Li^(+)ionic pairs are responsible for the outstanding piezoelectric properties and large linear electrostrain.

关键词： Zno Piezoelectric Donor-acceptor ionic pairs Local lattice distortion Lead-free

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Strain engineering in electrocatalysis:Strategies,characterization,and insights

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Nano Research 2024年第5期17卷 3603-3621页

作者： Qibo Deng Peng Xu Hassanien Gomaa Mohamed A.Shenashen Sherif A.El-Safty Cuihua An Li-Hua Shao Ning Hu School of Mechanical Engineering Hebei University of TechnologyTianjin 300401China Department of Chemistry Faculty of ScienceAl-Azhar University71524AssiutEgypt Department of Petrochemical Egyptian Petroleum Research Institute(EPRI)Nasr City11727CairoEgypt Center for Functional Materials National Institute for Materials Science(NIMS)1-2-1 SengenTsukubaIbaraki-ken305-0047Japan State Key Laboratory of Reliability and Intelligence Electrical Equipment Key Laboratory of Advanced Intelligent Protective Equipment TechnologyMinistry of Educationand School of Mechanical EngineeringHebei University of TechnologyTianjin 300401China National Key Laboratory of Strength and Structural Integrity Institute of Solid MechanicsSchool of Aeronautic Science and EngineeringBeihang UniversityBeijing100191China Advanced Equipment Research Institute Co. Ltd.of HEBUTTianjin 300401China

Strain engineering,as a cutting-edge method for modulating the electronic structure of catalysts,plays a crucial role in regulating the interaction between the catalytic surface and the adsorbed *** electrocatalytic performance is influenced by the electronic structure,which can be achieved by introducing the external forces or stresses to adjust interatomic spacing between surface *** challenges in strain engineering research lie in accurately understanding the mechanical impact of strain on *** paper first introduces the basic strategy for generating the strain,summarizes the different strain generation forms and their advantages and *** progress in researching the characterization means for the lattice strains and their applications in the field of electrocatalysis is also ***,the challenges of strain engineering are introduced,and an outlook on the future research directions is provided.

关键词： strain electrocatalysis characterization chemical reaction kinetics lattice mismatch

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