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Visual experimental study of nanofluids application to promote CO_(2) absorption in a bubble column

Chinese Journal of Chemical Engineering 2024年第3期67卷 228-237页

作者： Shangyuan Cheng Guisheng Qi yuliang li Yixuan Yang Shanxi Province Key Laboratory of Higee-Oriented Chemical Engineering North University of ChinaTaiyuan 030051China

The addition of dispersed-phase nanoparticles in the liquid phase can enhance the gas-liquid transfer process as the suspended nanoparticles affect the transfer process inside the fluid through microdisturbance or micro-convection *** this article,a high-speed digital camera was used to visualize the bubble behavior of CO_(2) in pure water and nanofluids to examine the effects of CO_(2) gas flow rate,nanoparticle solid content and type on the bubble behavior in the *** CO_(2) absorption performance in three water-based nanofluids were compared in a *** the mass transfer characteristics during CO_(2) bubble absorption and the reasons for the enhanced gas-liquid mass transfer effect of nanoparticles were *** results showed that the presence of nanoparticles affected the formation process of bubbles in the fluid,shortened the bubble detachment time,reduced the detachment diameter,effectively increased the gas-liquid contact area,and improved the bubbles detachment *** system with MCM-41 corresponded to a higher overall mass transfer *** MCM-41 contained surfactant that enhanced foaming behavior in *** prevented the transfer of CO_(2) to some extent,and the CO_(2) absorption by uncalined MCM-41/H_(2)O was 5.34%higher than that by pure *** with SiO_(2) nanoparticles with the same particle size and the same composition,MCM-41 had a higher adsorption capacity and better hydrophilicity due to its larger specific surface area and rich porous structure,which was more favorable to accelerate the collision between nanoparticles and CO_(2) bubbles to cause *** the condition of 0.1%(mass)solid content,the enhancement of CO_(2) absorption process by MCM-41 nanoparticles was more significant and improved by 16.9%compared with pure water.

关键词： Nanofluids CO_(2) absorption Mass transfer MCM-41 Bubble column

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Advances of graphdiyne-supported metal catalysts in thermocatalytic reactions

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Nano Research 2024年第4期17卷 2223-2233页

作者： Jia Yu Yida Yang yuliang li Changyan Cao Weiguo Song Beijing National Laboratory for Molecular Sciences CAS Research/Education Center for Excellence in Molecular SciencesLaboratory of Molecular Nanostructures and NanotechnologyInstitute of ChemistryChinese Academy of SciencesBeijing 100190China School of Chemical Sciences University of Chinese Academy of SciencesBeijing 100049China Beijing National Laboratory for Molecular Sciences CAS Research/Education Center for Excellence in Molecular SciencesLaboratory of organic solidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China

Supported metal catalysts are widely used in the modern chemical *** electronic interaction between supports and active components is of great significance for heterogeneous ***(GDY),a new type of carbon allotrope with sp-hybridized carbon atoms,πconjugate structure,and electron transmission capability,is a promising candidate as catalyst *** years have witnessed the rapid progress of GDY-supported metal catalysts for different catalysis *** that most processes in the current chemical industry are thermocatalytic reactions,we herein give an overview about the advances and particular characteristics of GDY-supported catalysts in these *** geometric structure and electronic properties of GDY are first ***,the synthesis methods for GDY-supported metal catalysts and their applications in thermocatalytic reactions are discussed,in which the effect of electronic interaction on catalytic performance is ***,the current challenges and future directions of GDY-supported metal catalysts for thermocatalysis are *** is expected that this review will enrich our understanding of the advances of GDY as a superior support for metal catalysts in thermocatalytic reactions.

关键词： graphdiyne metal catalysts thermocatalytic reactions heterogeneous catalysis

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Preface to special issue on celebrating the 100th anniversary of Xinjiang University

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Nano Research 2024年第1期17卷 1-4页

作者： Dianzeng Jia Ruimao Hua Xian-He Bu yuliang li State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources College of ChemistryXinjiang UniversityUrumqi 830017China Department of Chemistry Tsinghua UniversityBeijing 100084China School of Materials Science and Engineering Nankai UniversityTianjin 300350China CAS Key Laboratory of Organic Solids Institute of ChemistryChinese Academy of SciencesBeijing 100190China

Xinjiang University originated from Xinjiang College of Russian Language,Political Science and Law in *** 1935 and 1960,the college was re-organized and re-named as Xinjiang College and Xinjiang University,*** 1978,Xinjiang University was appointed by the State Council as the only national key university in *** 1997,it was designated as one of the first batch of key construction universities in the“211 Project”of *** 2000,Xinjiang University was rebuilt through merging with Xinjiang Institute of Technology.

关键词： Xinjiang anniversary originated

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An Ion-Pumping Interphase on Graphdiyne/Graphite Heterojunction for Fast-Charging lithium-Ion Batteries

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CCS Chemistry 2024年第1期6卷 110-124页

作者： Juan An Fan Wang Jia-Yue Yang Guoxing li yuliang li Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion Science Center for Material Creation and Energy ConversionSchool of Chemistry and Chemical EngineeringInstitute of Frontier and Interdisciplinary ScienceShandong UniversityQingdao 266237 Optics&Thermal Radiation Research Center Institute of Frontier and Interdisciplinary ScienceShandong UniversityQingdao 266237 Institute of Chemistry The Chinese Academy of SciencesBeijing 100190 University of Chinese Academy of Sciences Beijing 100049

The sluggish lithium-ion(li-ion)transport kinetics in graphite anode hinders its application in fast-charging li-ion batteries(liBs).Here,we develop an ionpumping interphase(IPI)on graphdiyne(GDY)/graphite heterojunction anodes to boost the ionic transport kinetics and enable high-performance,fast-charging *** IPI changed the ion solvation/desolvation environment by covalent/non-covalent interactions with li ions or solvents to optimize solid-electrolyte interphase(SEI)and regulate li-ion transport *** studied the in situ growth of few-layer GDY on graphite surface(GDY/graphite)as the IPI and found that the strong interaction between GDY and li ions enabled surface-induced modification of the ion solvation behavior and surface-assisted desolvation effect to accelerate the li-ion desolvation process.A functional anion-derived SEI layer with improved li-ion conductivity was *** with the generated built-in electric field at GDY/graphite hetero-interface self-pumping li ions to intercalate into the graphite,the li-ion transport kinetics was significantly enhanced to effectively eliminate li plating and large voltage polarization of the graphite anodes.A fast li intercalation in GDY/graphite without li oversaturation at the edge of the graphite was directly *** superior performance with high capacity(139.2 mA h g^(-1))and long lifespan(1650 cycles)under extremely fast-charging conditions(20 C,1 C=372 mA g^(-1))was achieved on GDY/graphite *** at low temperatures(-20℃),a specific capacity of 128.4 mA h g^(-1) was achieved with a capacity retention of 80%after 500 cycles at a 2 C rate.

关键词： extreme fast-charging lithium-ion batteries lithium-ion transport kinetics ion-pumping interphase graphdiyne/graphite heterojunction

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lithiated Graphdiyne Quantum Dots for Stable lithium Metal Anodes

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CCS Chemistry 2024年第5期6卷 1300-1311页

作者： Han Shen Congying Song Fan Wang Guoxing li yuliang li Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion Science Center for Material Creation and Energy ConversionInstitute of Frontier and Interdisciplinary ScienceShandong UniversityQingdao 266237 Key Laboratory of Organic Solids Institute of ChemistryChinese Academy of SciencesBeijing 100190 University of Chinese Academy of Sciences Beijing 100049

Here,a facile strategy is proposed for the preparation of lithiated graphdiyne quantum dots(GDY-li QDs)with conjugated sp-and sp2-hybridized carbons by the self-assembly technique ofπ–πstacking of lithiated hexaethynylbezene under mild *** as-prepared GDY-li QDs,containing stacked multialkynyl aromatic backbone and abundant lithium(li),show an average diameter of about 2.6 nm and good dispersion in the *** distinctive structures endow GDY-li QDs with superior properties that cannot be matched by traditional QDs,such as strong ion adsorption,li-ion self-concentration,high li-ion conductivity,the nanoconfinement effect,and ion solvation *** from these features,GDY-li QDs can stabilize limetal anodes to effectively suppress li-dendrite growth and significantly improve its li plating/stripping coulombic efficiency(99.3%in the carbonate electrolyte).The full cells with GDY-li QDs protected li-metal anodes,and liNi_(0.8)Co_(0.1)Mn^(0.1)O_(2)cathodes delivered high capacity and excellent cycling stability at high rates,which demonstrates the great potential of GDY-li QDs for application in fast-charging li-metal batteries.

关键词： graphdiyne quantum dots lithiation lithium metal anodes ion distribution

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Controlled Synthesis of Graphdiyne-Based Multiscale Catalysts for Energy Conversion

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Precision Chemistry 2024年第7期2卷 355-375页

作者： Siao Chen Xuchen Zheng Yang Gao Xinyu Ping Yurui Xue yuliang li CAS Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of SciencesBeijing 100190China Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion Science Center for Material Creation and Energy ConversionSchool of Chemistry and Chemical EngineeringShandong UniversityJinan 250100China School of Chemical Sciences University of Chinese Academy of SciencesBeijing 100049China

Graphdiyne(GDY)science is a new and rapidly developing interdisciplinary field that touches on various areas of chemistry,physics,information science,material science,life science,environmental science,and so *** rapid development of GDY science is part of the trend in development of carbon ***,with its unique structure and fascinating properties,has greatly promoted fundamental research toward practical applications of carbon *** important applications,such as catalysis and energy conversion,have been *** particular,GDY has shown great potential for application in the field of *** have precisely synthesized a series of GDY-based multiscale catalysts and applied them in various energy conversion and catalysis research,including ammonia synthesis,hydrogen production,CO_(2) conversion,and chemical-to-electrical energy *** this paper,we systematically review the advances in the precisely controlled synthesis of GDY and aggregated structures,and the latest progress with GDY in catalysis and energy conversion.

关键词： graphdiyne controlled growth atom catalyst heterostructure energy conversion

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Denitration of Nitroarenes Under Ambient Physiological Conditions Catalyzed by Graphdiyne-Supported Palladium

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CCS Chemistry 2024年第3期6卷 641-651页

作者： Endong Zhang Yanyan Chen Fengting Lv Zicheng Zuo Feng He Yongjun li Yiming Huang yuliang li Shu Wang Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190 College of Chemistry University of Chinese Academy of SciencesBeijing 100049

The direct cleavage of C–NO_(2)bonds for reductive denitration of nitroarenes remains a challenging transformation in synthetic organic ***,we report a biocompatible palladium-deposited graphdiyne nanocatalyst(Pd@GDY/DSPE-PEG)that can catalyze reductive denitration of nitroarenes under ambient physiological *** studies support this transformation via the oxidative addition of nitroarenes with Pd(0)and subsequent ligand exchange to form arylpalladium *** one-step reductive denitration via Pd@GDY/DSPE-PEG successfully facilitates the repair of the nitrated proteins arising from endogenic ONOO−and restores their physiological function,including blocking the apoptosis pathway in living ***,Pd@GDY/DSPE-PEG was further successfully applied for catalytic denitration to reduce the level of 3-nitrotyrosine residues of proteins located in the mouse brain hippocampus in *** study provides an ideal strategy for designing highly active enzymatic mimicking synthetic catalysts for the regulation of the nitrated protein level and the detoxification of nitrative damage of living cells and tissues.

关键词： 3-nitrotyrosine artificial nanaocatalysts reductive denitration palladium-deposited graphdiyne repairing nitrated protein

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Persistence of charge density wave against variation of band structures in V_(x)Ti_(1−x)Se_(2)(x=0–0.1)

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Nano Research 2024年第3期17卷 2129-2135页

作者： Zhanfeng liu Tongrui li Wen Zhu Hongwei Shou Mukhtar Lawan Adam Qilong Cui yuliang li Sheng Wang Yunbo Wu Hongen Zhu Yi liu Shuangming Chen Xiaojun Wu Shengtao Cui li Song Zhe Sun National Synchrotron Radiation Laboratory CAS Center for Excellence in NanoscienceUniversity of Science and Technology of ChinaHefei 230029China CAS Key Laboratory of Strongly-coupled Quantum Matter Physics University of Science and Technology of ChinaHefei 230026China Collaborative Innovation Center of Advanced Microstructures Nanjing 210093China State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun 130012China School of Chemistry and Materials Sciences CAS Key Laboratory of Materials for Energy Conversionand CAS Center for Excellence in NanoscienceUniversity of Science and Technology of ChinaHefei 230026China School Zhejiang Institute of Photonelectronics Jinhua 321004China

Charge density wave(CDW)is a phenomenon that occurs in materials,accompanied by changes in their intrinsic electronic *** study of CDW and its modulation in materials holds tremendous significance in materials research,as it provides a unique approach to controlling the electronic properties of ***_(2) is a typical layered material with a CDW phase at low *** V substitution for Ti in TiSe_(2),we tuned the carrier concentration in V_(x)Ti_(1-x)Se_(2) to study how its electronic structures ***-resolved photoemission spectroscopy(ARPES)shows that the band-folding effect is sustained with the doping level up to 10%,indicating the persistence of the CDW phase,even though the band structure is strikingly different from that of the parent compound TiSe_(2).Though CDW can induce the band fold effect with a driving force from the perspective of electronic systems,our studies suggest that this behavior could be maintained by lattice distortion of the CDW phase,even if band structures deviate from the electron-driven CDW *** work provides a constraint for understanding the CDW mechanism in TiSe_(2),and highlights the role of lattice distortion in the band-folding effect.

关键词： charge density wave band structure lattice distortion

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基于NURBS曲线的提花机拉刀结构优化

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机械强度 2024年第3期46卷 611-617页

作者：杨振宁李玉良东华大学机械工程学院上海201620 东华大学人工智能研究院上海201620 东华大学上海工业大数据与智能系统工程技术研究中心上海201620

针对大型提花机承受载荷时易发生弯曲变形导致拉刀提升高度不够,使直针钩子无法被电磁装置吸附的问题,首先对拉刀结构、载荷以及曲柄滑块驱动机构运动情况进行分析。其次,基于变截面梁理论和结构优化的方法,采用非均匀有理B样条(Non-Uni... 详细信息

针对大型提花机承受载荷时易发生弯曲变形导致拉刀提升高度不够,使直针钩子无法被电磁装置吸附的问题,首先对拉刀结构、载荷以及曲柄滑块驱动机构运动情况进行分析。其次,基于变截面梁理论和结构优化的方法,采用非均匀有理B样条(Non-Uniform Rational B-Splines,NURBS)曲线表达拉刀侧面、截面形状,通过数值方法计算拉刀截面惯性矩函数、弯矩函数,并通过有限差分法计算拉刀变形量。通过有限元方法(Finite Element Method,FEM)、等效为等截面梁的方法对挠度计算方法进行验证,误差在10%以内。最后,以最小质量为目标,采用原-对偶不可行内点算法对拉刀结构进行优化。优化结果表明,相较于优化初值模型,拉刀质量减小约17%,最大挠度减小约2667%。

关键词：提花机拉刀变截面梁 NURBS方法弯曲变形结构优化

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河流溶解无机碳浓度及其稳定碳同位素特征的研究进展

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安全与环境工程 2024年第2期31卷 225-238页

作者：刘浩雪李宇亮长安大学水利与环境学院陕西西安710054 长安大学旱区地下水文与生态效应教育部重点实验室陕西西安710054

河流是天然无机碳循环的重要通道。溶解无机碳(DIC)约占据河流碳通量的50%,近几十年来,分析DIC浓度及其稳定碳同位素特征已成为示踪碳来源、追踪碳循环、指示碳动态变化的有效方法和重要技术指标。介绍了DIC稳定碳同位素的测定方法,比... 详细信息

河流是天然无机碳循环的重要通道。溶解无机碳(DIC)约占据河流碳通量的50%,近几十年来,分析DIC浓度及其稳定碳同位素特征已成为示踪碳来源、追踪碳循环、指示碳动态变化的有效方法和重要技术指标。介绍了DIC稳定碳同位素的测定方法,比较了不同的前处理方法,提出了稳定碳同位素的分析方法,总结了河流DIC浓度及其稳定碳同位素的组成特征,分析了影响河流DIC浓度及δ^(13)C_(DIC)的重要因素,包括岩石风化作用、季节效应、土地利用类型、水生光合作用与脱气作用和人类活动。在此基础上,提出了稳定碳同位素技术的应用前景,对稳定碳同位素技术存在的问题进行了分析和展望,可为我国DIC的碳循环过程以及河水补给端元的确定提供理论依据。

关键词：河流溶解无机碳(DIC) 稳定碳同位素碳循环

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