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A review of in situ carbon mineralization in basalt

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第4期16卷 1467-1485页

作者： Xiaomin Cao qi Li Liang Xu Yongsheng Tan State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan 430071China university of Chinese Academy of Sciences Beijing 100049China

Global warming has greatly threatened the human living environment and carbon capture and storage(CCS)technology is reco.nized as a promising way to reduce carbon *** storage is co.sidered a reliable option for long-term carbon *** rich in alkaline earth elements facilitates rapid and permanent co.(2) fixation as ***,the co.plex co.(2)-fluid-basalt interaction poses challenges for assessing carbon storage *** different reaction co.ditions,the carbonation products and carbonation rates *** mineralization reactions also induce petrophysical and mechanical responses,which have potential risks for the long-term injectivity and the carbon storage safety in basalt *** this paper,recent advances in carbon mineralization storage in basalt based on laboratory research are co.prehensively *** assessment methods for carbon storage potential are introduced and the carbon trapping mechanisms are investigated with the identification of the co.trolling *** in pore structure,permeability and mechanical properties in both static reactions and reactive perco.ation experiments are also *** study co.ld provide insight into challenges as well as perspectives for future research.

关键词： Carbon mineralization Basalt co.(2)-fluid-basalt interaction Petrophysical evolution Mechanical response Carbon capture and storage(CCS)

A robust visco.lastic surfactant tolerating 20% HCl up to 150℃ for oil well stimulation

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Petroleum Science 2024年第3期21卷 1865-1874页

作者： Ji Wang Ning qi Hong-Yao Yin Yu-Jun Feng Polymer Research Institute State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu610065SichuanPR.China Tianfu Yongxing Laboratory New Theory and Technology of CO_(2) Capture Research CenterChengdu610065SichuanPR China School of Petroleum Engineering China University of Petroleum(East China)Qingdao266580ShandongPR China

Visco.lastic surfactants(VES)are often used as visco.s diverters in acidizing stimulation to prolong the acid co.sumption time and maximize zonal co.erage of the acid for improving well ***,the ceiling temperature of co.mercial VES cannot exceed 120℃in practical use because of the poor thermal stability and fragile molecular structure,hindering their implementation in hightemperature oil reservoirs,i.e.,≥150℃.Here we synthesized a novel C22-tailed diamine,N-erucaminopropyl-N,N-dimethylamine(EDPA),and examined co.paratively its rheological behavior,assemblies morphology and molecular stability in 20 wt%HCl with a co.mercial VES,erucyl dimethyl amidopropyl betaine(EDAB).The feasibility of EDPA for acidizing stimulation was assessed by acid etching of carbonate rock with its HCl solution at 150℃.Rheological results showed that the 2.5 wt%EDPA—20 wt%HCl solution maintains stable visco.ity of 90 m Pa s at 150℃for 60 min,while that of 2.0 wt%EDAB HCl solution is just 1 m Pa s under identical co.ditions.1H NMR spectra and cryo-TEM observations revealed that the chemical structure and self-assembled architectures of EDPA remained intact in such co.text,but the EDAB suffered from degradation due to the hydrolysis of the amide group,acco.nting for the poor heat-resistance and *** reaction rate of 2.5 wt%EDPA HCl solution with carbonate rock was one order of magnitude lower than that of 20 wt%HCl solution at 150℃,underpinning the potential of EDPA to be used in the high-temperature reservoirs *** work improved the thermal tolerance of VES in highly co.centrated HCl solution,paving a feasible way for the acidization of high-temperature reservoir environments(~150℃).

关键词： Visco.lastic surfactants Thermal stability Self-diverting acid Wormlike micelles Acidizing stimulation

co.pling co.P nanoparticles onto N,P-doped biomass-derived carbon as efficient electrocatalysts for flexible Zn–air batteries

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Rare Metals 2024年第10期43卷 4982-4991页

作者： Shu-qi Li Kang Sun Yan-Yan Liu Shu-Ling Liu Jing-Jing zhou Wen-Bo Zhang Yi-Hang Lu Xiang-Meng Chen Xiao-Peng Wang Bao-Jun Li Jian-Chun Jiang co.lege of Science Henan Agricultural University Department of Chemistry Tsinghua University co.lege of Chemistry Zhengzhou University Institute of Chemical Industry of Forest Products National Engineering Lab for Biomass Chemical UtilizationKey and Open Lab on Forest Chemical EngineeringChinese Academy of ForestryState Forestry Administration

Catalysts for oxygen co.version play an important role in energy storage and co.version technologies such as metal-air *** highly active stable,and low-co.t catalysts is critical for further implementation of the above ***,an efficien oxygen electrocatalyst with co.P nanoparticles （NPs）co.pling onto N,P-doped porous carbon nanosheets（co.P@NPAC） derived from co.ton stalk is successfully designed and prepared via activation,hydrothermal treatment,and pyrolysis *** excellent properties of electrical co.ductivity,mass transfer,and synergistic integration between co.P and N,P-doped carbon endow co.P@NPAC co.posite with superior oxygen reduction reaction/oxygen evolution reaction （ORR/OER） ***2P@NPAC catalyst achieves ORR activity with half-wave potential of 0.85 V and high OER activity with overpotential of 261 mV at 10 mA·*** flexible Zn-air batteries （ZABs） based on co.P@NPAC catalyst revea outstanding performances with a high open-circuit voltage（1.38 V）,a peak power density of (75 mW·cm-2),and a low charge-discharge voltage gap （0.74 V,～200 cycles）The flexible ZABs express the stable discharge-charge voltage gap at various bending *** work provides interesting inspiration for the ingenious design of efficien carbon electrocatalysts from biomass with potential application of energy storage and co.version devices.

关键词： co.ton stalk Flexible Zn–air batteries N,P-doped activated carbon Oxygen reduction reaction

co.trolled flight of a self-powered micro blimp driven by insect-sized flapping-wing thrusters

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Chinese Journal of Aeronautics 2024年第6期37卷 127-136页

作者： Xian YU Zhiwei LIU Jiaming LENG Mingjing qi Xiaojun YAN School of Energy and Power Engineering Beihang UniversityBeijing 100191China co.laborative Innovation Center of Advanced Aero-Engine Beijing 100191China National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics Beihang UniversityBeijng 100191China Beijing Key Laboratory of Aero-Engine Structure and Strength Beihang UniversityBeijing 100191China

Micro aerial platforms face significant challenges in achieving long co.trolled endurance as most of the energy is co.sumed to overco.e the weight of the *** this study,we present a co.trollable micro blimp that addresses this issue through the use of a helium-filled *** micro blimp has a long axis of 23 cm and is propelled by four insect-sized flapping-wing thrusters,each weighing 80 mg and with a wingspan of 3.5 *** distributed thrusters enable co.trolled motions and provide the micro blimp with an advantage in flight endurance co.pared to multirotors or flapping-wing micro aerial vehicles at the same size *** enhance the performance of the co.trolled flight,we propose a wireless co.trol module that enables manipulation from a distance of up to 100 ***,a smartphone application is developed to send instructions to the circuit board,allowing the blimp to turn left and right,ascend and descend,and achieve a co.bination of these movements *** findings demonstrate that this micro blimp is one of the smallest co.trolled self-powered micro blimps to date.

关键词： Microairvehicle Aircraft co.trol Self-powered micro blimp Flapping-wing thruster Wireless flight

Joint Effects of Multipollutant Mixtures on Mortality in Chengdu,China

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Biomedical and Environmental Sciences 2024年第1期37卷 112-116页

作者： ZHANG Ying TIAN qi qi HU Wen Dong ZHANG Shao Bo WANG Shi Gong ZHENG Can Jun Plateau Atmosphere and Environment Key Laboratory of Sichuan Province School of Atmospheric SciencesChengdu University of Information TechnologyChengdu 610225SichuanChina Yunnan R&D Institute of Natural Disaster on Chengdu university of Information Technology Kunming 650034YunnanChina Chengdu Plain Urban Meteorology and Environment Sichuan Provincial Field Scientific Observation and Research Station Chengdu 610225SichuanChina Chinese Center for Disease co.trol and Prevention National Institute for Communicable Disease Control and PreventionBeijing 102206China

Significant epidemiological research has revealed that exposure to air pollution is substantially associated with numerous detrimental health co.sequences^([1-3]).The negative health effects of individual air pollutants(e.g.,fine particulate matter:PM_(2.5);nitrogen dioxide:NO_(2);carbon monoxide,co.or ozone:O_(3))have been widely explored^([4]).However,humans are co.stantly exposed to multipollutant mixtures in real life,and biological responses to inhaled pollutants are likely to depend on the interplay of pollutant ***,it is critical and imperative to explore the joint effects of multipollutant mixtures on human beings.

关键词： mixtures monoxide co.sequences

Transient NOE driven signal enhancement of INADEQUATE solid-state NMR spectrosco.y for the structural analysis of rubbers

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Magnetic Resonance Letters 2024年第3期4卷 35-41页

作者： Zhiwei Yan Yue-qi Ye Rongchun Zhang South China Advanced Institute for Soft Matter Science and Technology(AISMST) School of Emergent Soft Matter(SESM)South China University of TechnologyGuangzhou510640China JEOL(Beijing)co. Ltd.Haidian DistrictBeijing100190China JEOL ltd. MusashinoAkishimaTokyo196-8558Japan Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices South China University of TechnologyGuangzhou510640China

INADEQUATE(Incredible Natural Abundance DoublE QUAntum Transfer Experiment)is one of the most important techniques in revealing the carbon skeleton of organic solids in solid-state NMR ***,its use for structural analysis is quite limited due to the low natural abundance of^(13)C-^(13)C co.nectivity(~0.01%)and thus low ***,in semi-solids like rubbers,the sensitivity will be further significantly reduced by the inefficient cross polarization from 1H to^(13)C due to molecular motions induced averaging of^(1)H-^(13)C dipolar ***,in this study,we demonstrate that transient nuclear Overhauser effect(NOE)can be used to efficiently enhance^(13)C signals,and thus enable rapid acquisition of two-dimensional(2D)^(13)C INADEQUATE spectra of *** chlorobutyl rubber as the model system,it is found that an overall signalto-noise ratio(SNR)enhancement about 22%can be achieved,leading to significant timesaving by about 33%as co.pared to the direct polarization-based INADEQUATE *** experimental results on natural rubber and ethylene propylene diene monomer(EPDM)rubber are also shown to demonstrate the robust performance of transient NOE enhanced INADEQUATE experiment.

关键词： Transient NOE INADEQUATE Carbon skeleton Rubbers

Prediction of the Pore-Pressure Built-Up and Temperature of Fire-Loaded co.crete with Pix2Pix

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co.puters, Materials & co.tinua 2024年第5期79卷 2907-2922页

作者： Xueya Wang Yiming Zhang qi Liu Huanran Wang Mechanics and Materials Science Research Center Ningbo UniversityNingbo315211China Jinyun Institute Zhejiang Sci-Tech UniversityLishui321400China School of Civil Engineering and Architecture Zhejiang Sci-Tech UniversityHangzhou310018China School of co.puter Science Nanjing University of Information Science and TechnologyNanjing210044China

co.crete subjected to fire loads is susceptible to explosive spalling, which can lead to the exposure of reinforcingsteel bars to the fire, substantially jeopardizing the structural safety and stability. The spalling of fire-loaded co.creteis closely related to the evolution of pore pressure and temperature. co.ventional analytical methods involve theresolution of co.plex, strongly co.pled multifield equations, necessitating significant co.putational efforts. Torapidly and accurately obtain the distributions of pore-pressure and temperature, the Pix2Pix model is adoptedin this work, which is celebrated for its capabilities in image generation. The open-source dataset used hereinfeatures RGB images we generated using a sophisticated co.pled model, while the grayscale images encapsulate the15 principal variables influencing spalling. After co.ducting a series of tests with different layers co.figurations,activation functions and loss functions, the Pix2Pix model suitable for assessing the spalling risk of fire-loadedco.crete has been meticulously designed and trained. The applicability and reliability of the Pix2Pix model inco.crete parameter prediction are verified by co.paring its outco.es with those derived fromthe strong co.plingTHC model. Notably, for the practical engineering applications, our findings indicate that utilizing monochromeimages as the initial target for analysis yields more dependable results. This work not only offers valuable insightsfor civil engineers specializing in co.crete structures but also establishes a robust methodological approach forresearchers seeking to create similar predictive models.

关键词： Fire loaded co.crete spalling risk pore pressure generative adversarial network(GAN) Pix2Pix

Assessing the dynamics of O2 desorption from co.alt phthalocyanine by in situ electrochemical scanning tunneling microsco.y

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Journal of Energy Chemistry 2024年第11期98卷 144-148页

作者： Yu-qi Wang Yue Feng Xiang Wang Dong Wang CAS Key Laboratory of Molecular Nanostructure and Nanotechnology CAS Research/Education Center for Excellence in Molecular Sciences Beijing National Laboratory for Molecular Science (BNLMS) Institute of Chemistry Chinese Academy of Sciences university of Chinese Academy of Sciences

We report here the in situ electrochemical scanning tunneling microsco.y（ECSTM） study of co.alt phthalocyanine（co.c）-catalyzed O2evolution reaction（OER） and the dynamics of *** self-assembled co.c monolayer is fabricated on Au（111） substrate and resolved by ECSTM in 0.1 M KOH *** OH-adsorption on co.c prior to OER is observed in ECSTM *** OER,the generated O2adsorbed on co.Pc is observed in the co.c *** step experiment is employed to monitor the desorption of OER-generated O2from co.c,which results in the decreasing surface co.erage of co.c-O2with *** rate co.stant of O2desorption is evaluated through data *** insights into the dynamics of co.O2dissociation at the molecular level via in situ imaging help understand the role of co.O2in oxygen reduction reaction（ORR） and OER.

关键词： co.alt phthalocyanine Electrochemical scanning tunneling microsco.y Oxygen evolution reaction

Significantly improved near-field co.munication antennas based on novel Ho^(3+)and co.(2+)ions co.doped Ni-Zn ferrites

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Journal of Advanced Ceramics 2024年第3期13卷 293-309页

作者： Pao Yang Zhiqing Liu Hongbin qi Xiuli Fu Zhijian Peng School of Science China University of GeosciencesBeijing 100083China School of Science Beijing University of Posts and TelecommunicationsBeijing 100876China Kunshan GuoLi Electronic Technology co. Ltd.Kunshan 215300China

In near-field co.munication(NFC)antennas,soft magnetic ferrites are usually applied as a substrate to reduce eddy current loss and increase magnetic field *** this purpose,the applied ferrites are required to have high permeability and saturation magnetization together with low magnetic loss and dielectric ***,for most soft magnetic ferrites,it is difficult to meet all the *** novel Ni-Zn ferrite ceramics co.doped by Ho^(3+)and co.(2+)ions with chemical formula Ni_(0.5-x)Zn_(0.5)Ho_(0.02)co.(x)Fe_(1.98)O_(4)(x=0-0.2)were designed and prepared to balance these needs on the basis of molten salt synthesis with metal nitrates as raw materials and potassium hydroxide(KOH)as the precipitation agent and molten salt *** the substitution of Ho^(3+),the saturation magnetization and initial permeability decrease,but with further doping of co.(2+),the saturation magnetization gradually increases,while the initial permeability co.tinues to *** x=0.1,the sample will have the lowest dielectric co.stant,magnetic and dielectric loss,as well as the highest Curie temperature(305℃).Moreover,the acquired Ni-Zn ferrites have been applied simulatively in NFC antennas,revealing that the device manufactured with the optimal Ni_(0.4)Zn_(0.5)Ho_(0.02)co.(0.1)Fe_(1.98)O_(4)ferrite ceramics would have significantly improved performance at 13.56 MHz with low leakage and long transmit distance of magnetic ***,the Ni_(0.4)Zn_(0.5)Ho_(0.02)co.(0.1)Fe_(1.98)O_(4)ferrite ceramics would be a good candidate for NFC antenna substrates.

关键词： electromagnetic properties co.doping microstrip antennas Ni-Zn ferrite