检索结果-内蒙古大学图书馆

Recent advances and challenges of cathode materials in aqueous rechargeable zinc-ion batteries

学校读者我要写书评

暂无评论

EcoEnergy

EcoEnergy 2024年第4期2卷 599-629页

作者： Yihui Zou Jin Sun Yulong Chi Xueyan Cheng Dongjiang Yang College of Environmental Science and Engineering State Key Laboratory of Bio-fibers and Eco-textiles Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles Institute of Marine Biobased Materials Qingdao University Qingdao China Institute of Micro/Nano Materials and Devices Ningbo University of Technology Ningbo Zhejiang China

Aqueous Zn-ion battery (AZIB) is a new type of secondary battery developed in recent years. It has the advantages of high energy density, high power density, efficient and safe discharge process, non-toxic and cheap battery materials, simple preparation process, etc., and has high application prospects in emerging large-scale energy storage fields such as electric vehicles and energy storage grids. Currently, one of the main factors hindering the further development of AZIBs batteries is the lack of suitable cathode materials. This article briefly introduces the advantages and energy storage mechanisms of aqueous zinc-ion batteries. Based on the crucial role of cathode materials in AZIBs, several common cathode materials (such as manganese-based compounds, vanadium-based compounds, nickel/cobalt-based compounds, and lithium/sodium intercalated compounds) are reviewed, and strategies to improve their conductivity and cycling stability are summarized, focusing on modification strategies such as structural regulation, nanoengineering, doping modification, and compounding with high-conductivity materials. The article also points out the key development directions for cathode materials of AZIBs in the future.

关键词： aqueous Zn-ion battery cathode materials electrochemical performance energy storage mechanism modification strategy

Neural Network Establishes Co-Occurrence Links between Transformation Products of the Contaminant and the Soil Microbiome

学校读者我要写书评

暂无评论

SSRN 2023年

作者： Xiang, Yuhui Yu, Yansong Wang, Jiahui Li, Weiwei Rong, Yu Ling, Haibo Chen, Zhongbing Qian, Yiguang Han, Xiaole Sun, Jie Yang, Yuyi Chen, Liang Li, Juying Chen, Ke Key Laboratory of Resources Conversion and Pollution Control of the State Ethnic Affairs Commission College of Resources and Environmental Science South-Central Minzu University Wuhan430074 China Hubei Key Laboratory of Pollution Damage Assessment and Environmental Health Risk Prevention and Control Hubei Provincial Academy of Eco-Environmental Sciences Wuhan430074 China Department of Applied Ecology Faculty of Environmental Sciences Czech University of Life Sciences Prague Praha16500 Czech Republic Research Center for Environmental Ecology and Engineering School of Environmental Ecology and Biological Engineering Wuhan Institute of Technology Wuhan430205 China Key Laboratory of Aquatic Botany and Watershed Ecology Wuhan Botanical Garden Chinese Academy of Sciences Wuhan430074 China Shenzhen Key Laboratory of Environmental Chemistry and Ecological Remediation College of Chemistry and Environmental Engineering Shenzhen University Shenzhen518060 China

It is still a challenge to establish reliable links between transformation products (TPs) of the contaminant and the microbiome as the discovery of TPs still requires a sophisticated experiment regime. Additionally, linear approaches such as Pearson’s and Spearman’s correlations, which are widely used, may face challenges to deal with this issue. It is due to that 16S rRNA gene amplicon sequencing and mass spectrometry datasets are compositional, which may confound statistical inference. In this study, we combined the use of 2H-labeled Stable Isotope-Assisted Metabolomics (2H-SIAM) and a neural network-based algorithm (i.e., MMvec) to explore links between TPs and microbiome. Links between degraders and degradation products were well discussed, and other links provided valuable information. A metagenomic study provided indirect evidence for the established links. Identification of pyrene degraders from soils, and DNA-SIP (DNA-based stable isotope probing) study were further conducted, both of which provided direct evidence for the established links. The comparison among different approaches, for instance, Pearson’s and Spearman’s correlations, further confirms the performance of the provided strategy. In the end, the unique features of the combined use of 2H-SIAM and MMvec were summarized. © 2023, The Authors. All rights reserved.

关键词： Mass spectrometry

Experimental Study of Copper Foam Affecting Powder Deflagration Flame Propagation and Quenching Behaviors

学校读者我要写书评

暂无评论

SSRN 2023年

作者： Yansong, Zhang Hongtao, Dong Mengting, Cao Runzhi, Li Yingjun, Sun Xiao, Liu Yinghui, Zhang College of Safety and Environmental Engineering Shandong University of Science and Technology Qingdao266590 China State Key Laboratory Cultivation Base for Gas Geology and Gas Control Henan Polytechnic University Jiaozuo454003 China

Foam metal can be more effective in quenching gas and dust explosion flame in this research, a platform was created to experiment with dust deflagration using transparent quartz tubes and high-speed photography. The study focused on how copper foam affects flame propagation during deflagration of three kinds of dust: polyethylene, aluminum, and wheat. The results showed that copper foam hinders the flame front displacement and reduces fluctuations in flame propagation velocity when compared to deflagrations that do not have copper foam. However, placing copper foam too close to the ignition source can increase the magnitude of fluctuations in the early stages of the deflagration. When copper foam was placed 360mm above the source of ignition, the 10PPI and 20PPI copper foam were able to decrease the flame of polyethylene dust and aluminum dust. As the porosity of the metal foam increases, the 30PPI copper foam can completely extinguish the flame of the three powders. The research also found that copper foam can divide the flame, quench the flame entering the copper foam, and block some of the burned and unburned powders, there by reducing the energy of the deflagration and weakening the reaction. © 2023, The Authors. All rights reserved.

关键词： Polyethylenes

High nitrogen fertilizer input enhanced the microbial network complexity in the paddy soil

学校读者我要写书评

暂无评论

Soil Ecology Letters 2024年第2期6卷 97-109页

作者： Yanan Chen Yan Li Tianyi Qiu Haoran He Ji Liu Chengjiao Duan Yongxing Cui Min Huang Chunyan Wu Linchuan Fang The Research Center of Soil and Water Conservation and Ecological Environment Chinese Academy of Sciences and Ministry of EducationYangling712100China State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Institute of Soil and Water Conservation CAS and MWRYangling712100China University of Chinese Academy of Sciences Beijing100049China Institute of Environment Resource and Soil Fertilizer Zhejiang Academy of Agricultural SciencesHangzhou310021China College of Natural Resources and Environment Northwest A&F UniversityYangling712100China Hubei Province Key Laboratory for Geographical Process Analysis and Simulation Central China Normal UniversityWuhan430079China Department of Ecohydrology Leibniz Institute of Freshwater Ecology and Inland FisheriesBerlin12587Germany Sino-French Institute for Earth System Science College of Urban and Environmental SciencesPeking UniversityBeijing100871China College of Resources and Environmental Engineering Wuhan University of TechnologyWuhan430070China CAS Center for Excellence in Quaternary Science and Global Change Xi’an710061China

N fertilizer altered bacterial community compositions by changing soil nutrients.•Bacterial ammonia oxidation became predominated with the increasing N rate.•Excessive N input caused the information of a more complex microbial network.•Intensified microbial competition by excessive N was due to negative link ***(N)fertilization drives the structure and function of soil microbial communities,which are crucial for regulating soil biogeochemical cycling and maintaining ecosystem *** the N fertilizer effects on soil microbial composition and diversity have been widely investigated,it is generally overlooked that ecosystem processes are carried out via complex associations among microbiome ***,we examined the effects of five N fertilization levels(0,135,180,225,and 360 kg N ha−1)on microbial co-occurrence networks and key functional taxa such as ammonia-oxidizers in paddy *** results showed that N addition altered microbial community composition,which were positively related to soil total N and available phosphorus(P)*** abundance of ammonia-oxidizing archaea(AOA)significantly decreased after N addition,whereas ammonia-oxidizing bacteria(AOB)increased in N360 *** with low-N group(N0 and N135),the high-N group(N225 and N360)shaped more complex microbial webs and thus improved the stability of the microbial *** least squares path modeling further revealed that N fertilizer had a higher effect on microbial network complexity in the high-N group(0.83)than the low-N group(0.49).Although there were more positive links across all microbial networks,the proportion of negative links significantly increased in the high-N network,suggesting that excess N addition aggravated the competition among microbial *** these interactions between microbial communities and N fertilization advances our understanding of biogeochemical processes in paddy soils and their effects on nutrient supply to

关键词： nitrogen fertilizer paddy soil co-occurrence network microbial interaction

Boosting Solar-Driven Volatile Organic Compounds Desorption Via the Synergy of Nh2-Uio-66 with Hollow Polypyrrole Nanotube

学校读者我要写书评

暂无评论

SSRN 2022年

作者： Feng, Mengying Chen, Sijia Li, Guiying Yu, Yingxin Zhang, Weiping Chen, Jiangyao Liu, Hongli An, Taicheng Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health Institute of Environmental Health and Pollution control Guangdong University of Technology Guangzhou510006 China Guangdong Engineering Technology Research Center for Photocatalytic Technology Integration and Equipment Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control School of Environmental Science and Engineering Guangdong University of Technology Guangzhou510006 China

Metal-organic frameworks (MOFs) are witnessing rapid development in the adsorption removal of volatile organic compounds (VOCs) from polluted air due to their remarkable adsorption capacity. However, their intrinsic poor thermal conductivities often make their regeneration processes suffer from high energy consumption. Herein, a novel photodynamic NH2-UiO-66@PPy adsorbent was constructed by in-situ growth of NH2-UiO-66 particles onto hollow PPy nanotubes via a facile solvothermal method. This adsorbent not only reserved the excellent VOCs adsorption capacity of NH2-UiO-66, but also extended its light response range from UV-vis to near-infrared region. Benefitting from the superior photothermal conversion ability of PPy and well contact interface between PPy nanotube and its surface-loaded NH2-UiO-66 particles, higher surface temperature of PPy nanotubes would be obtained upon exposure to UV-vis-NIR light and further transferred to its surrounding MOF nanoparticles. Eventually, the surface temperature of the optimal NH2-UiO-66@PPy adsorbent can be as high as 255 °C, and almost 100% of the adsorbed ethyl acetate was able to be released within 30 min of UV-vis-NIR irradiation. Distinct from the conventional heating whole adsorbent bed, this photothermal desorption strategy would significantly reduce the heat-transfer among adsorbent particles and become less dependent on the heat-transfer rate, thus efficiently alleviating the intrinsic thermal conductivity shortcoming of MOF. © 2022, The Authors. All rights reserved.

关键词： Desorption

Insights into the Effects of Microbial Consortia-Enhanced Recycled Concrete Aggregates on the Crack Self-Healing of Concrete

学校读者我要写书评

暂无评论

SSRN 2022年

作者： Han, Ruikai Xu, Shunshun Zhang, Jiaguang Liu, Yuanzhen Zhou, Aijuan College of Civil Engineering Taiyuan University of Technology Taiyuan China State Key Laboratory of Subtropical Building Science South China University of Technology Guangzhou China College of Environmental Science and Engineering Taiyuan University of Technology Taiyuan China

Immobilization is adopted to protect the incorporated bacteria to maintain its high-efficiency on the microbially induced carbonate precipitation (MICP) capacity in the self-healing concrete over a period of time. However, several unfavorable characteristics of current bacterial carriers, such as poor compatibility with cementitious matrix, relatively high-cost, and potential decrease in mechanical properties of concrete, may limit their potential implementation in reinforced concrete (RC) construction. The objective of this study was to demonstrate the feasibility that microbial consortia-enhanced recycled concrete aggregates (RCAs) immobilized bacteria to self-heal cracks . The effectiveness of two other immobilization techniques, i.e., RCAs and ceramsite particles immobilized bacteria, on the self-healing effi ciency of concrete were also investigated. Experimental results showed that the physical and mechanical properties of RCAs could be significantly enhanced with extension of the bio-deposition enhancement time. The concrete specimens incorporated with enhanced RCAs-immobilized mixed cultures exhibited 0.47mm-width crack healed after 56 days curing, which is extremely equal to 0.48mm-wide crack healed for specimens incorporated with ceramiste particles-immobilized mixed cultures. The mineral precipitations at the crack surfaces of self-healing concrete were calcite crystals and had regular cubic shape. The findings obtained in this study can provide a promising potential of mixed cultures-enhanced RCAs for a wide range of engineering applications. © 2022, The Authors. All rights reserved.

关键词： Deposition

Chain Scission Modification Mode in Plasma Catalytic N-Undecane Decomposition: In Situ Probing of Intermediates and Reaction Pathways

学校读者我要写书评

暂无评论

SSRN 2023年

作者： Sun, Yuhai Fei, Xiaodan Han, Jingyi Wu, Wei Wu, keying Xu, Weicheng Jiang, Boqiong School of Environmental Science and Engineering Zhejiang Gongshang University Hangzhou310018 China Zhejiang Province Key Laboratory of Solid Waste Treatment and Recycling Hangzhou310012 China School of Environmental and Chemical Engineering Foshan University Foshan528000 China Hangzhou Botsing Environmental Protection Technology Co. Ltd Hangzhou311217 China

To provide insight into the mechanism of plasma-catalytic long-chain alkane oxidation from the aspect of chain scission, n-undecane (C11H24) decomposition over γ-Al2O3 and Ag/γ-Al2O3 were investigated in a coaxial dielectric barrier discharge (DBD) reactor, and the highest n-undecane conversion (89.7 %) and CO2 selectivity (SCO2, 40.0 %) were achieved in Plasma+Ag/γ-Al2O3 system. It was found that the simultaneous activation of O3 and C11H24 played a very important role in chain scission, and was promoted by the formation of Ag-O-Al entity introduced by the strong interaction between Ag and γ-Al2O3. Different chain scission behaviors and reaction pathways were proposed by a combined analysis of GC-MS and in-situ DRIFTS. In Plasma+Ag/γ-Al2O3 system, the reaction of chain scission and oxidation preferred to take place in the middle of the chain, producing the ketone and aldehyde species with low carbon number, which were easy to be converted to CO2 and H2O. Instead, without the highly efficient activation of O3 and C11H24, the oxidation of the C11H24 over the surface of γ-Al2O3 was more likely to take place on the edge of the chain, leading to the accumulation of long-chain aldehyde, which lower values of C11H24 conversion and SCO2 (45.6 % and 21.7 %, respectively) in Plasma+γ-Al2O3 system. © 2023, The Authors. All rights reserved.

关键词： Chemical activation

engineering Pt Single Atom Catalyst with Abundant Lattice Oxygen by Dual Nanospace Confinement Strategy for the Efficient Catalytic Elimination of Vocs

学校读者我要写书评

暂无评论

SSRN 2023年

作者： Tang, Zhicheng Han, Weigao Ling, Weitong Gao, Peng Dong, Fang National Engineering Research Centre for Fine Petrochemical Intermediates State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou730000 China University of Chinese Academy of Sciences Beijing100049 China Dalian National Laboratory for Clean Energy Dalian116023 China State Key Laboratory of Fine Chemicals Key Laboratory of Industrial Ecology and Environmental Engineering School of Environmental Science & Technology Dalian University of Technology Dalian116024 China College of Chemistry & Chemical Engineering Northwest Normal University Gansu Lanzhou730070 China

Precisely constructing Pt single atom catalyst (SACs) with fine-tuned chemical environments is a vitally challenging issue, which has attracted peoples’ attentions. The activation of lattice oxygen linked to active sites is also a great challenge to heterogeneous catalysis. Herein, via a cage-encapsulating strategy, Pt single atom (SA) was accurately constructed by dual nanospace confinement of three-dimensional ordered macroporous (3DOM) CeO2 pore and Ce-MOFs nanocages. During calcination, CeO2 derived from Ce-MOF restricted the migration of Pt SA and prevented its agglomeration. With the construction of CeO2 nanocage, more active Pt-O2 bond was created. More active lattice oxygen was linked to Pt single atom. DFT calculation also confirmed VOCs molecules were more easily absorbed on the catalyst surface and CO was more easily oxidized to CO2. The 90% conversion temperature of Pt1/CeO2@CeO2-0.2 (T90 = 268 oC) was 81 oC lower than Pt1/CeO2 (T90 = 349 oC) on the catalytic combustion of benzene. © 2023, The Authors. All rights reserved.

关键词： Cerium oxide

Effect of Aluminizing and Laser Shock Peening Treatments on the High-Temperature Oxidation Resistance of AISI 321 Stainless Steel for Solar Thermal Power Heat Exchanger

学校读者我要写书评

暂无评论

Chinese Journal of Mechanical engineering 2025年第2期 199-220页

作者： Wei Li Wenyang Qin Dapeng Jiang Guowei Bo Song Ni Hui Chen Yilin Zhao Weiying Huang Xulong Peng Jianjun He Yanjie Ren Cong Li Libo Zhou Shengde Zhang Jian Chen Changsha Environmental Protection Vocational College School of Energy and Power Engineering Changsha University of Science and Technology State Key Laboratory of Powder Metallurgy Central South University School of Civil Engineering Changsha University of Science and Technology Japan Electric Power Central Research Institute

The high-temperature oxidation resistance of AISI 321 stainless steel used in solar thermal power heat exchangers determines its service life. In this study, aluminizing and subsequent laser shock peening（LSP） treatments were employed to improve the high-temperature oxidation resistance of AISI 321 stainless steel at 620 °C. These two treatments decreased the oxidation rate of AISI 321 steel. Specifically, the optimal oxidation resistance was observed in aluminized steel before oxidation for 144 h owing to the increased entropy of the LSP-treated specimen. After 144 h, LSP-treated steel achieved the best oxidation resistance because of the formation of a protective α-Al2O3film. Moreover, the large amount of subgrain boundaries formed on the aluminized layer of the LSP-treated samples could act as short-circuit paths for the outward diffusion of Al, facilitating the rapid nucleation of α-Al2O3. Meanwhile, the aluminized layer could isolate the contact between the oxidation environment and matrix, thereby decreasing the oxidation rate. Furthermore, the minimum oxidation parabolic constant was calculated for LSP-treated steel(6.45787×10-14), which was 69.18% and 36.36% that of aluminized and 321 steel, respectively, during the entire oxidation process. Therefore, the combination of aluminizing and LSP treatments can improve the high-temperature oxidation resistance of 321 stainless steel, providing a new idea for its surface treatment to achieve a long service life at high temperatures.

关键词：