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Reconcile the contradictory wettability requirements for the reduction and oxidation half-reactions in overall CO_(2) photoreduction via alternately hydrophobic surfaces

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Journal of Energy Chemistry 2024年第6期93卷 202-212,I0006页

作者： Hailing Huo Ting Hu Chengxi Huang Fang Wu Tongyu Wang Xuan Liu Liang z.ang Qiang Ju zhiqing zhong Hongbin Xing Erjun Kan ang Li MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing Nanjing University of Science and TechnologyNanjing 210094JiangsuChina College of Information Science and Technology Nanjing Forestry UniversityNanjing 210037JiangsuChina

The overall photocatalytic CO_(2) reduction reaction(OPCRR)that can directly convert CO_(2) and H_(2)O into fuels represents a promising renewable energy conversion *** a typical redox reaction,the OPCRR involves two half-reactions:the CO_(2) reduction half-reaction(CRHR)and the water oxidation half-reaction(WOHR).Generally,both half-reactions can be promoted by adjusting the wettability of ***,there is a contradiction in wettability requirements for the two ***,CRHR prefers a hydrophobic surface that can accumulate more CO_(2) molecules on the active sites,ensuring the appropriate ratio of gas-phase(CO_(2))to liquid-phase(H_(2)O)***,the WOHR prefers a hydrophilic surface that can promote the departure of the gaseous product(O_(2))from the catalyst surface,preventing isolation between active sites and the reactant(H_(2)O).Here,we successfully reconciled the contradictory wettability requirements for the CRHR and WOHR by creating an alternately hydrophobic *** was achieved through a selectively hydrophobic modification method and a charge-transfer-control ***,the collaboratively promoted CRHR and WOHR led to a significantly enhanced OPCRR with a solar-to-fuel conversion efficiency of 0.186%.Notably,in ethanol production,the catalyst exhibited a 10.64-fold increase in generation rate(271.44μmol g^(-1)h~(-1))and a 4-fold increase in selectivity(55.77%)compared to the benchmark *** innovative approach holds great potential for application in universal overall reactions involving gas participation.

关键词： Hydrophobic Hydrophilic Gas transport Overall CO_(2)photoreduction z-scheme

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Effects of impregnation sequence on the NH_(3)-SCR activity and hydrothermal stability of a Ce-Nb/SnO_(2) catalyst

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Journal of Environmental Sciences 2024年第4期138卷 450-457页

作者： ying zhu Wenpo Shan zhihua Lian Jingjing Liu Yan z.ang Hong He Center for Excellence in Regional Atmospheric Environment and Key Laboratory of Urban Pollutant Conversion Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control Ningbo Urban Environment Observation and Research StationInstitute of Urban EnvironmentChinese Academy of SciencesNingbo 315800China State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China

Hydrothermal stability is crucial for the practical application of deNO_(x)catalyst on diesel vehicles,for the selective catalytic reduction of NO_(x)with NH_(3)(NH_(3)-SCR).SnO_(2)-based materials possess superior hydrothermal stability,which is attractive for the development of NH_(3)-SCR *** this work,a series of Ce-Nb/SnO_(2)catalysts,with Ce and Nb loading on SnO_(2)support,were prepared by impregnation *** was found that,the NH_(3)-SCR activities and hydrothermal stabilities of the Ce-Nb/SnO_(2)catalysts significantly varied with the impregnation sequences,and the Ce-Nb(f)/SnO_(2) catalyst that firstly impregnated Nb and then impregnated Ce exhibited the best *** characterization results revealed that CeNb(f)/SnO_(2)possessed appropriate acidity and redox ***,the strong synergistic effect between Nb and Sn species stabilized the structure and maintained the dispersion of acid *** study may provide a new understanding for the effect of impregnation sequence on activity and hydrothermal stability and a new environmental-friendly NH_(3)-SCR catalyst with potential applications for NO_(x)removal from diesel and hydrogenfueled engines.

关键词： NO_(x)emission control NH_(3)-SCR Hydrothermal stability Ce-Nb/SnO_(2)catalyst Impregnation sequence

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Quantification of perfluorinated compounds in atmospheric particulate shows potential connection with environmental event

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Journal of Environmental Sciences 2024年第2期136卷 237-247页

作者： Hua Tang ying Wang Shengling Si Hongli Li David Da Yong Chen National Institute of Metrology 18 BeisanhuandongluChaoyang DistrictBeijing 100029China School of Chemistry and Materials Science Nanjing Normal UniversityNanjing 210023China Si Chuan zhong Ce Biao Wu Technology Co.Ltd. Sichuan 610052China Department of Chemistry University of British ColumbiaVancouver V6T 1Z1BCCanada

A method of quantification of perfluorinated compounds(PFCs)from atmospheric particulate matter(APM)is described.A single step pretreatment method,selective pressurized liquid extraction(SPLE),was developed to reduce the high matrix background and avoid contamination from commonly used multiple sample pretreatment *** effective sorbent was selected to purify the PFCs during SPLE,followed by liquid chromatography-tandem mass spectrometry(LC–MS/MS),for quantification of *** affecting the SPLE efficiency,including temperature,static extraction time,and number of extraction cycles used,were *** optimum conditions were found to be 120℃,10 min,and 3 cycles,***-MS/MS method was developed to obtain the optimal sensitivity specific to *** method detection limits(MDLs)were 0.006 to 0.48 ng/g for the PFCs studied and the linear response range was from 0.1 to 100 ng/*** ensure accurate values were obtained,each step of the experiment was evaluated and controlled to prevent *** optimized method was tested by performing spiking experiments in natural particulate matter matrices and good rates of recovery and reproducibility were obtained for all target ***,the method was successfully used to measure 16 PFCs in the APM samples collected in Beijing over five years from 2015 to *** is observed that some PFCs follow the trend of total PFC changes,and can be attributed to the environment influencing events and policy enforcement,while others don't seem to change as much with time of the year or from year to year.

关键词： Selective pressurized liquid extraction Liquid chromatography-mass spectrometry Perfluorinated compounds Atmospheric particulate matter Pollution control

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城市轨道交通浮置板轨道纵向联板的动力效应分析

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振动工程学报 2024年第5期37卷 822-829页

作者：杨新文孙志昂张昭张英杰同济大学轨道交通结构耐久与系统安全上海市重点实验室上海201804 同济大学道路与交通工程教育部重点实验室上海201804

城市轨道交通浮置板轨道纵向联结处存在薄弱环节,轨道设计时对板与板纵向联结的动态效应考虑不足。通过引入等效密度及等效地基系数的方法对钢弹簧浮置板轨道系统板下基础进行合理的模型简化,建立了预制式和现浇式浮置板系统振动特性三... 详细信息

城市轨道交通浮置板轨道纵向联结处存在薄弱环节,轨道设计时对板与板纵向联结的动态效应考虑不足。通过引入等效密度及等效地基系数的方法对钢弹簧浮置板轨道系统板下基础进行合理的模型简化,建立了预制式和现浇式浮置板系统振动特性三维有限元分析模型,充分考虑了钢轨、剪力铰和板下基础对浮置板结构振动特性的影响,研究了浮置板轨道系统模态与谐响应特性,分析了浮置板纵向联结处的动力效应特性。结果表明:浮置板轨道在1~200 Hz低频段的模态振型变化主要表现为四种运动方式:刚体运动、弯曲、弯扭组合和扭转;对于预制板轨道系统,浮置板主导整个系统的振动特性表现的频段在系统模态分析和谐响应分析中表现出一致的规律;对于现浇板轨道系统,当频率为32.6~57.8 Hz时,浮置板对系统振动特性的主导作用弱化,表现为过渡频段;浮置板联板动力效应产生的低阶弯曲模态在预制板系统中表现为刚体运动模态;对于由Ns块板组成的浮置板系统,联板效应引起的单块板每阶弯曲模态频率附近的附加模态数为N_(s)/2-1。

关键词：浮置板轨道城市轨道交通模态分析有限元法联板效应

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Single-structure 3-axis Lorentz force magnetometer based on an AlN-on-Si MEMS resonator

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Microsystems & Nanoengineering 2024年第3期10卷 75-86页

作者： Cheng Tu Xu-heng Ou-Yang ying-jie Wu Xiao-sheng z.ang School of Integrated Circuit Science and Engineering University of Electronic Science and Technology of ChinaChengdu 611731China

This work presents a single-structure 3-axis Lorentz force magnetometer(LFM)based on an AlN-on-Si MEMS *** operation of the proposed LFM relies on the flexible manipulation of applied excitation currents in different directions and frequencies,enabling the effective actuation of two mechanical vibration modes in a single device for magnetic field measurements in three ***,the excited out-of-plane drum-like mode at 277 kHz is used for measuring the x-and y-axis magnetic fields,while the in-plane square-extensional mode at 5.4 MHz is used for measuring the z-axis magnetic *** different configurations of applied excitation currents ensure good crossinterference immunity among the three *** to conventional capacitive LFMs,the proposed piezoelectric LFM utilizes strong electromechanical coupling from the AlN layer,which allows it to operate at ambient pressure with a high *** understand and analyze the measured results,a novel equivalent circuit model for the proposed LFM is also reported in this work,which serves to separate the effect of Lorentz force from the unwanted capacitive *** demonstrated 3-axis LFM exhibits measured magnetic responsivities of 1.74 ppm/mT,1.83 ppm/mT and 6.75 ppm/mT in the x-,y-and z-axes,respectively,which are comparable to their capacitive counterparts.

关键词： resonator Lorentz structure

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Two-photon polymerization-based 4D printing and its applications

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International Journal of Extreme Manufacturing 2024年第1期6卷 1-25页

作者： Bingcong Jian Honggeng Li Xiangnan He Rong Wang Hui ying Yang Qi Ge Shenzhen Key Laboratory of Soft Mechanics&Smart Manufacturing Southern University of Science and TechnologyShenzhen 518055People’s Republic of China Department of Mechanical and Energy Engineering Southern University of Science and TechnologyShenzhen 518055People’s Republic of China Pillar of Engineering Product Development Singapore University of Technology and Design8 Somapah RoadSingapore 487372Singapore

Two-photon polymerization(TPP)is a cutting-edge micro/nanoscale three-dimensional(3D)printing technology based on the principle of two-photon *** surpasses the diffraction limit in achieving feature sizes and excels in fabricating intricate 3D micro/nanostructures with exceptional *** concept of 4D entails the fabrication of structures utilizing smart materials capable of undergoing shape,property,or functional changes in response to external stimuli over *** integration of TPP and 4D printing introduces the possibility of producing responsive structures with micro/nanoscale accuracy,thereby enhancing the capabilities and potential applications of both *** paper comprehensively reviews TPP-based 4D printing technology and its diverse ***,the working principles of TPP and its recent advancements are ***,the optional4D printing materials suitable for fabrication with TPP are ***,this review paper highlights several noteworthy applications of TPP-based 4D printing,including domains such as biomedical microrobots,bioinspired microactuators,autonomous mobile microrobots,transformable devices and robots,as well as anti-counterfeiting *** conclusion,this paper provides valuable insights into the current status and future prospects of TPP-based4D printing technology,thereby serving as a guide for researchers and practitioners.

关键词： two-photonpolymerization 4D printing nano/micro fabrication microrobot

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A Low-carbon Operation Optimization Method of ETG-RIES Based on Adaptive Optimization Spiking Neural P Systems

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Protection and Control of Modern Power Systems 2024年第5期9卷 162-177页

作者： Tao Wang zhu Huang Ruixuan ying Luis Valencia-Cabrera School of Electrical Engineering and Electronic Information Xihua UniversityChengdu 610039China the Xiluodu Hydropower Plant China Yangtze Power Co.Ltd.Zhaotong 657300China the Institute of Multidisciplnary Research for Ad-vanced Materials Tohoku UniversitySendai 980-8577Japan Department of Computer Science and Artificial Intelligence University of SevilleAvda.Reina Mercedes s/n 41012Spain

To enhance multi-energy complementarity and foster a low carbon economy of energy resources,this paper proposes an innovative low-carbon operation opti-mization method for electric-thermal-gas regional inte-grated energy *** bolster the low-carbon operation capabilities of such systems,a coordinated operation framework is presented that integrates carbon capture devices,power to gas equipment,combined heat and power units,and a multi-energy storage *** address the challenge of high-dimensional constraint imbalance in the optimization process,a novel low-carbon operation opti-mization method is then *** new method is based on an adaptive single-objective continuous optimiza-tion spiking neural P system,specifically designed for this ***,simulation models of four typical schemes are established and employed to test and analyze the economy and carbon environmental pollution degree of the proposed system model,as well as the performance of the operation optimization ***,simulation results show that the proposed method not only considers the economic viability of the target integrated energy sys-tem,but also significantly improves the wind power utili-zation and carbon reduction *** Terms—Spiking neural P system,power-to-gas,membrane computing,regional integrated energy system,low-carbon operation optimization.

关键词： Spiking neural P system power-to-gas membrane computing regional integrated energy system low-carbon operation optimization

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Cationic ordering transition in oxygen-redox layered oxide cathodes

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Carbon Energy 2024年第1期6卷 197-206页

作者： Xinyan Li ang Gao Qinghua z.ang Hao Yu Pengxiang Ji Dongdong Xiao Xuefeng Wang Dong Su Xiaohui Rong Xiqian Yu Hong Li Yong-Sheng Hu Lin Gu Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijingChina College of Materials Science and Opto-Electronic Technology University of Chinese Academy of SciencesBeijingChina Beijing National Center for Electron Microscopy and Laboratory of Advanced Materials School of Materials Science and EngineeringTsinghua UniversityBeijingChina Beijing Advanced Innovation Center for Materials Genome Engineering Huairou DivisionInstitute of PhysicsChinese Academy of SciencesBeijingChina

Understanding the structural origin of the competition between oxygen 2p and transition-metal 3d orbitals in oxygen-redox(OR)layered oxides is eminently desirable for exploring reversible and high-energy-density Li/Na-ion ***,we reveal the correlation between cationic ordering transition and OR degradation in ribbon-ordered P3-Na_(0.6)Li_(0.2)Mn_(0.8)O_(2) via in situ structural *** two different voltage windows,the OR capacity can be improved approximately twofold when suppressing the in-plane cationic ordering *** find that the intralayer cationic migration is promoted by electrochemical reduction from Mn^(4+)to Jahn–Teller Mn^(3+)and the concomitant NaO_(6) stacking transformation from triangular prisms to octahedra,resulting in the loss of ribbon ordering and electrochemical ***-principles calculations reveal that Mn^(4+)/Mn^(3+)charge ordering and alignment of the degenerate eg orbital induce lattice-level collective Jahn–Teller distortion,which favors intralayer Mn-ion migration and thereby accelerates OR *** findings unravel the relationship between in-plane cationic ordering and OR reversibility and highlight the importance of superstructure protection for the rational design of reversible OR-active layered oxide cathodes.

关键词： cationic ordering layered oxide cathodes oxygen redox sodium-ion batteries

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Minimizing the ratio of ionizable lipid in lipid nanoparticles for in vivo base editing

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National Science Review 2024年第6期11卷 285-293页

作者： Qiubing Chen Xuebin Wang Yizhou z.ang Ming Tian Junyi Duan ying z.ang Hao Yin Departments of Urology and Laboratory Medicine Frontier Science Center for Immunology and Metabolism Medical Research InstituteZhongnan Hospital of Wuhan UniversityWuhan University State Key Laboratory of Virology Tai Kang Center for Life and Medical Sciences Tai Kang Medical SchoolWuhan University Department of Rheumatology and Immunology Zhongnan Hospital of Wuhan UniversityWuhan University Wuhan Research Center for Infectious Diseases and Cancer Chinese Academy of Medical Sciences RNA Institute Wuhan University

Lipid nanoparticles(LNPs) have gained clinical approval as carriers for both siRNA and mRNA. Among the crucial components of LNPs, ionizable lipids play a pivotal role in determining the efficiency of RNA delivery. In this study, we synthesized a series of ionizable lipids, denoted as HTO, with a higher count of hydroxyl groups compared to SM-102. Remarkably, LNPs based on HTO12 lipid demonstrated comparable mRNA delivery efficiency and biosafety to those based on SM-102. However, the former reduced the ratio of ionizable lipid/total lipids to mRNA in LNPs by 2.5 times compared to SM-102. The HTO12 LNP efficiently encapsulated adenine base editor mRNA and sgRNA targeting Pcsk9, leading to substantial gene editing within the liver of mice and effective reduction of the target protein. Our study underscores that ionizable lipids with multiple hydroxyl groups may facilitate an improved lipid-to-mRNA ratio to minimize the dosage of ionizable lipids for in vivo delivery.

关键词： ionizable lipid lipid nanoparticle mRNA delivery base editor delivery Pcsk9

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Long-term clinical outcomes and health-related quality of life in patients with isolated methylmalonic acidemia after liver transplantation:experience from the largest cohort study in China

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World Journal of Pediatrics 2024年第8期20卷 809-821页

作者： Yi-zhou Jiang Guang-Peng zhou Lin Wei Wei Qu zhi-Gui zeng ying Liu Yu-Le Tan Jun Wang zhi-Jun zhu Li-ying Sun Department of Critical Liver Diseases Liver Research CenterBeijing Friendship HospitalCapital Medical UniversityNo.101 Lu Yuan Dong RoadTong-Zhou DistrictBeijing110112China Liver Transplantation Center National Clinical Research Center for Digestive DiseasesBeijing Friendship HospitalCapital Medical UniversityBeijingChina Clinical Center for Pediatric Liver Transplantation No.101 Lu Yuan Dong RoadTong-Zhou DistrictCapital Medical UniversityBeijing110112China

Background Liver transplantation(LT)has been proposed as a viable treatment option for selected methylmalonic acidemia(MMA)***,there are still controversies regarding the therapeutic value of LT for *** systematic assessment of health-related quality of life(HRQoL)-targeted MMA children before and after LT is also *** study aimed to comprehensively assess the long-term impact of LT on MMA,including multiorgan sequelae and HRQoL in children and *** We retrospectively evaluated 15 isolated MMA patients undergoing LT at our institution between June 2013 and March ***-and post-transplant data were compared,including metabolic profiles,neurologic consequences,growth parameters,and *** further assess the characteristics of the HRQoL outcomes in MMA,we compared the results with those of children with biliary atresia(BA).Results All patients had early onset MMA,and underwent LT at a mean age of 4.3 *** 1.3–8.2 years of follow-up,the patient and graft survival rates were 100%.Metabolic stability was achieved in all patients with liberalized dietary protein *** was a significant overall improvement in height z scores(P=0.0047),and some preexisting neurological complications remained stable or even improved after *** the Pediatric Quality of Life Inventory(PedsQL™)generic core scales,the mean total,physical health,and psychosocial health scores improved significantly posttransplant(P<0.05).In the family impact module,higher mean scores were noted for all subscales post-LT,especially family function and daily activities(P<0.01).However,the total scores on the generic core scales and transplant module were significantly lower(Cohen’s d=0.57–1.17)when compared with BA *** particular,social and school functioning(Cohen’s d=0.86–1.76),treatment anxiety,and communication(Cohen’s d=0.99–1.81)were far behind,with a large effect *** This large single-center study of the mainland of China sh

关键词： Health-related quality of life.Inborn error of metabolism Isolated methylmalonic acidemia Liver transplantation:Outcomes

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