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Insights into the sandwich-like ultrathin Ni-doped MoS_(2)/rGO hybrid as effective sulfur hosts with excellent adsorption and electrocatalysis effects for lithium-sulfur batteries

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Journal of Energy Chemistry 2021年第9期30卷 85-94页

作者： Ran zhang Yutao Dong Mohammed AAl-Tahan yingying zhang Ruipeng Wei Yuhang Ma Changchun Yang Jianmin zhang College of Chemistry Green Catalysis CenterZhengzhou UniversityZhengzhou 450001China College of Science Henan Agricultural UniversityZhengzhou 450002China

The design of sulfur hosts with high conductivity,large specific surface area,strong adsorption and electrocatalytic ability is crucial to advance high performance lithium-sulfur ***,a novel ultrathin sandwich-type Ni-doped MoS_(2)/reduced graphene oxide(denote as Ni-doped MoS_(2)/rGO) hybrid is developed as a sulfur host through a simple one-step hydrothermal *** two-dimensional layered structure Ni-doped MoS_(2)/rGO hybrid with heterostructure and heteroatom architecture defects not only plays a key role in adsorption of lithium polysulfide but also catalyzes on redox kinetics of sulfur and polysulfide ***,it can contribute to the large specific surface area for Li_(2) S/S_8 deposition,fast Li-ion and electron transportation,thus enhancing the electrocatalytic properties,as confirmed firstly by cyclic voltammetry(CV) *** to the adsorption-catalytic synergistic effect,the Ni-doped MoS_(2)/rGO cathode exhibits high specific capacity(1343.6 mA h g^(-1) at 0.2 C,921.6 mA h g^(-1) at 1 C),high coulombic efficiency and an outstanding cycle stability(with the low attenuation rate of 0.077% per cycle over 140 cycles at 0.5 C and 0.11% per cycle over 400 cycles at 1 C,respectively).This work proposes some inspiration for exploring the construction of advanced lithium-sulfur batteries through the rational design defects of atomic structure and electronic states of MoS_(2) as sulfur host.

关键词： MoS_(2) Defect Self-assembly Electrocatalysis Lithium-sulfur batteries

Additive manufacturing of a high strength Al-5Mg_(2)Si-2Mg alloy:Microstructure and mechanical properties

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Journal of Materials Science & Technology 2021年第32期91卷 215-223页

作者： Hailin Yang yingying zhang Jianying Wang Zhilin Liu Chunhui Liu Shouxun Ji State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China Light Alloy Research Institute College of Mechanical and Electrical EngineeringCentral South UniversityChangsha 410083China BCAST Brunel University LondonUxbridgeMiddlesex UB83PHUnited Kingdom

A novel Al-5 Mg2 Si-2 Mg alloy was processed by selective laser melting(SLM) to understand its representative features of microstructural evolution and mechanical properties during additive manufacturing(AM). The as-SLM fabricated Al-5 Mg_(2) Si-2 Mg alloy is found to deliver much less hot cracks and other defects. Meanwhile, excellent mechanical property is also achieved, i.e. 452 ± 11 MPa for ultimate tensile strength, 295 ± 14 MPa for yield strength, and 9.3 ± 2.5% for elongation. Clearly, these mechanical properties are better than that obtained by high pressure die casting(HPDC), and better than some other alloys obtained by SLM. The as-SLM fabricated Al-5 Mg_(2) Si-2 Mg alloy is featured by the significantly refined microstructures in the compact primary α-Al, the divorced Mg_(2) Si eutectic networks distributing atα-Al grain boundaries, and some α-Al Fe Mn Si phase in association with eutectic Mg_(2) Si phase. The high strength and ductility of the alloy are attributed to its unique features including(a) the reduced solidification range,(b) the possible increase of the eutectic level in the microstructure, and(c) the shift of eutectic point and the maximum solubility point of Mg2 Si in Al matrix.

关键词： Aluminium alloys Additive manufacturing Selective laser melting Microstructure Mechanical properties

Aczel-Alsina Weighted Aggregation Operators of Simplified Neutrosophic Numbers and Its Application in Multiple Attribute Decision Making

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Computer Modeling in Engineering & Sciences 2022年第8期132卷 569-584页

作者： Rui Yong Jun Ye Shigui Du Aqin Zhu yingying zhang Rock Mechanics Institute Ningbo UniversityNingbo315211China School of Civil and Environmental Engineering Ningbo UniversityNingbo315211China

The simplified neutrosophic number(SNN)can represent uncertain,imprecise,incomplete,and inconsistent information that exists in scientific,technological,and engineering ***,it is a useful tool for describing truth,falsity,and indeterminacy information in multiple attribute decision-making(MADM)*** suit decision makers’preference selection,the operational flexibility of aggregation operators shows its importance in dealing with the flexible decision-making problems in the SNN *** solve this problem,this paper develops the Aczel-Alsina aggregation operators of SNNs for MADM problems in view of the Aczel-Alsina operational ***,we define the Aczel-Alsina operations of ***,the Aczel-Alsina aggregation operators of SNNs are presented based on the defined Aczel-Alsina operations of ***,a MADM method is established using the proposed aggregation operators under the SNN ***,an illustrative example about slope treatment scheme choices is provided to indicate the practicality and efficiency of the established *** comparison with the existing relative MADM methods,the results show that the established MADM method can overcome the insufficiency of decision flexibility in the existing MADM methods and demonstrate the metric of flexible decision-making.

关键词： Simplified neutrosophic number multiple attribute decision-making aggregation operators

Ultra-sensitive and wide applicable strain sensor enabled by carbon nanofibers with dual alignment for human machine interfaces

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Nano Research 2023年第3期16卷 4093-4099页

作者： Peng Bi Mingchao zhang Shuo Li Haojie Lu Haomin Wang Xiaoping Liang Huarun Liang yingying zhang Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education Department of ChemistryTsinghua UniversityBeijing 100084China Laboratory of Flexible Electronics Technology Tsinghua UniversityBeijing 100084China

Flexible strain sensors with high sensitivity,wide detection range,and low detection limit have continuously attracted great interest due to their tremendous application potential in areas such as health/medical-care,human-machine interface,as well as safety and *** both of a high sensitivity and a wide working range are desired key parameters for a strain sensor,they are usually contrary to each other to be achieved on the same sensor due to the tightly structure dependence of both of ***,a flexible strain sensor with both high sensitivity and wide strain detection range is prepared based on the design of an integrated membrane containing both of parallel aligned and randomly aligned carbon nanofibers(CNFs).The parallel aligned CNF membrane(p-CNF)exhibits a low strain detection limit and high sensitivity,while the random aligned CNF membrane(r-CNF)exhibits a large strain detection *** the advantages of both p-CNF and r-CNF,the strain sensor with stacked p-CNF and r-CNF(p/r-CNF)exhibits both high sensitivity and wide working *** gauge factor(GF)is 1,272 for strains under 0.5%and 2,266 for strain from 70%to 100%.At the same time,it can work in a wide strain range of 0.005%to 100%,fulfilling the requirements for accurately detecting full-range human *** demonstrated its applications in the recognition of facial expressions and joint ***,we constructed an intelligent lip-language recognition system,which can accurately track phonetic symbols and may help people with language disabilities,proving the potential of this strain sensor in health management and medical ***,we foresee that the dual-alignment structure design of the p/r-CNF strain sensor may also be applied in the design of other high performance sensors.

关键词： nanofiber membrane carbon nanofibers flexible sensor dual-alignment high sensitivity

Abnormal energy metabolism and tau phosphorylation in the brains of middle-aged mice in response to atmospheric PM2.5 exposure

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Journal of Environmental Sciences 2017年第12期29卷 145-153页

作者： Rui Gao Tingting Ku Xiaotong Ji yingying zhang Guangke Li Nan Sang College of Environment and Resource Research Center of Environment and HealthShanxi UniversityTaiyuan 030006China

In light of the accelerated aging of the global population and the deterioration of the atmosphere pollution, we sought to clarify the potential mechanisms by which fine particulate matter（PM_（2.5）） can cause cognitive impairment and neurodegeneration through the alteration of mitochondrial structure and function. The results indicate that PM_（2.5） inhalation reduces ATP production by disrupting the aerobic tricarboxylic acid cycle and oxidative phosphorylation, thereby causing the hypophosphorylation of tau in the cortices of middle-aged mice. Furthermore, excessive reactive oxygen species generation was involved in the impairment. Interestingly, these alterations were partially reversed after exposure to PM_（2.5） ended. These findings clarify the mechanism involved in mitochondrial abnormality-related neuropathological dysfunction in response to atmospheric PM_（2.5） inhalation and provide an optimistic sight for alleviating the adverse health outcomes in polluted areas.

关键词： Fine particulate matter(PM_(2.5)) Mitochondrial structure and function Energy metabolism Reactive oxygen species(ROS) Tau phosphorylation

Gold nanorods-mediated efficient synergistic immunotherapy for detection and inhibition of postoperative tumor recurrence

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Acta Pharmaceutica Sinica B 2021年第7期11卷 1978-1992页

作者： yingying zhang Tiange Wang Yu Tian Chaonan zhang Kun Ge Jinchao zhang Jin Chang Hanjie Wang School of Life Sciences Tianjin UniversityTianjin 300072China Tianjin Engineering Center of Micro-Nano Biomaterials and Detection-Treatment Technology Tianjin Key Laboratory of Function and Application of Biological Macromolecular StructuresTianjin 300072China College of Chemistry&Environmental Science Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of EducationChemical Biology Key Laboratory of Hebei ProvinceHebei UniversityBaoding 071002China

Tumor recurrence after surgery is the main cause of treatment ***,the initial stage of recurrence is not easy to detect,and it is difficult to cure in the late *** order to improve the life quality of postoperative patients,an efficient synergistic immunotherapy was developed to achieve early diagnosis and treatment of post-surgical tumor recurrence,*** this paper,two kinds of theranostic agents based on gold nanorods(AuNRs)platform were *** and quantum dots(QDs)in one agent was used for the detection of carcinoembryonic antigen(CEA),using fluorescence resonance energy transfer(FRET)technology to indicate the occurrence of in situ recurrence,while AuNRs in the other agent was used for photothermal therapy(PTT),together with antiPDL1 mediated immunotherapy to alleviate the process of tumor metastasis.A series of assays indicated that this synergistic immunotherapy could induce tumor cell death and the increased generation of CD3;/CD4;T-lymphocytes and CD3+;CD8;***,more immune factors(IL-2,IL-6,and IFN-γ)produced by synergistic immunotherapy were secreted than *** cooperative immunotherapy strategy could be utilized for diagnosis and treatment of postoperative tumor recurrence at the same time,providing a new perspective for basic and clinical research.

关键词： Synergistic immunotherapy Post-surgical tumor recurrence Theranostics Gold nanorods Phototherapy Lung metastasis Fluorescence resonance energy transfer Carcinoembryonic antigen

Highly Active Pd-PEPPSI Complexes for Suzuki-Miyaura Cross-coupling of Aryl Chlorides:an Investigation on the Effect of Electronic Properties

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Chemical Research in Chinese Universities 2020年第5期36卷 859-864页

作者： zhang yingying HAN Fangwai zhang Mengvao zhang Huixin LI Ying WANG Ru ZENG Yongfei LIU Guiyan Tianjin Key Laboratory of Stmcture and Performance for Functional Molecules Key Laboratory of Inorganic-organic Hybrid Functional Material ChemistryMinistry of EducationCollege of ChemistryTianjin Normal UniversityTianjin 300387P.R.China

Three new Pd-pyridine enlianced precatalyst preparation stabilization and initiation(PEPPSI)complexes with halogen groups on the N-heterocyclic carbene and pyridine were *** structures have been clearly characterized by nuclear magnetic resonance spectroscopy and X-ray single-crystal di *** e fleets of the electronic properties of halogen groups on the catalytic activity in the Suzuki-Miyaura cross-coupling of aryl chlo-rides were *** Pd-PEPPSI complexes could catalyze the cross-coupling reaction efficiently with a low catalyst loading(0.05%,molar ratio)at room temperature and the products were obtained in high yields.

关键词： Pd-pyridine enhanced precatalyst preparation stabilization and initiation(PEPPSI)complex Suzuki-Miyaura cross-coupling reaction Aryl chloride

Synthesis and Herbicidal Activities of Novel Uracil Derivatives Containing Pyrimidinyl Moiety

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Chemical Research in Chinese Universities 2014年第3期30卷 400-404页

作者： HE Leien WU yingying zhang Hanyun LIU Manyun SHI Deqing Key Laboratory of Pesticide & Chemical Biology Ministry of Education College of Chemistry Central China Normal University Wuhan 430079 P. R. China

In order to find novel protoporphyrinogen oxidase inhibitors with high efficacy, broad-spectrum activity, and safety to crops, nine title compounds（4a-4i） were designed and synthesized by introducing pyrimidine moiety into the uracil skeleton with commercially herbicide butafenacil as the lead compound. Their structures were con- firmed by 1H NMR, IR, mass spectroscopy and elemental analysis. The bioassay results indicate that most of com- pounds 4 tested exhibit good to excellent herbicidal activities against B. campestris, A. retroflexus, E. crusgalli and D. sanguinalis in pre-emergence treatment at a dose of 1.5 kg/ha（1 ha=10^4 m^2）, for example, compound 4i showed 100% inhibition against the four plants tested in pre-emergence treatment at a dose of 1.5 kg/ha. So, this type of skeleton can be used as a valuable lead compound for the further development of a pre-emergent herbicide.

关键词： Protoporphyrinogen oxidase Uracil Pyrimidine Herbicidal activity

The inactivation of bacteriophages MS2 and PhiX174 by nanoscale zero-valent iron:Resistance difference and mechanisms

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Frontiers of Environmental Science & Engineering 2022年第8期16卷 247-256页

作者： Rong Cheng yingying zhang Tao zhang Feng Hou Xiaoxin Cao Lei Shi Peiwen Jiang Xiang Zheng Jianlong Wang School of Environment and Natural Resources Renmin University of ChinaBeijing 100872China China Water Environment Group Co.Ltd. Beijing 101101China Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 100084China

Pathogenic enteric viruses pose a significant risk to human *** zero-valent iron(nZVI),a novel material for environmental remediation,has been shown to be a promising tool for ***,the existing research has typically utilized MS2 or f2 bacteriophages to investigate the antimicrobial properties of nZVI,and the resistance difference between bacteriophages,which is important for the application of disinfection technologies,is not yet ***,MS2 and PhiX174 containing RNA and DNA,respectively,were used as model viruses to investigate the resistances to *** bacteriophage inactivation mechanisms were also discussed using TEM images,protein,and nucleic acid *** results showed that an initial concentration of 10^(6)PFU/mL of MS2 could be completely inactivated within 240 min by 40 mg/L nZVI at pH 7,whereas the complete inactivation of PhiX174 could not be achieved by extending the reaction time,increasing the nZVI dosage,or changing the dosing *** indicates that the resistance of phage PhiX174 to nZVI was much stronger than that of *** images indicated that the viral particle shape was distorted,and the capsid shell was ruptured by *** damage to viral surface proteins in both phages was examined by three-dimensional fluorescence spectrum and sodium dodecyl sulfate polyacrylamide gel electrophoresis(SDS-PAGE).However,the nucleic acid analysis demonstrated that the nucleic acid of MS2,but not PhiX174,was *** indicated that bacteriophage inactivation was mainly attributed to the damage of nucleic acids.

关键词： Nanoscale zero-valent iron(nZVI) MS2 PhiΧ174 Resistance Inactivation Pathogenic microorganisms