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Gradient‑Layered MXene/Hollow Lignin Nanospheres Architecture Design for Flexible and Stretchable Supercapacitors

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Nano-Micro Letters 2025年第2期17卷 447-462页

作者： Haonan Zhang Cheng Hao Tongtong fu Dian Yu Jane Howe Kaiwen Chen Ning Yan Hao Ren Huamin Zhai Jiangsu Provincial Key Lab of Sustainable Pulp and Paper Technology and Biomass Materials NanJing Forestry UniversityNanjing 210037People’s Republic of China Department of Chemical Engineering and Applied Chemistry University of Toronto200 College StreetTorontoON M5S 3E5Canada Department of Materials Science and Engineering University of Toronto184 College StreetTorontoON M5S 3E4Canada College of Materials Science and Engineering Nanjing Forestry UniversityNanjing 210037People’s Republic of China

With the rapid development of flexible wearable electronics,the demand for stretchable energy storage devices has *** this work,a novel gradient-layered architecture was design based on single-pore hollow lignin nanospheres(HLNPs)-intercalated two-dimensional transition metal carbide(Ti_(3)C_(2)T_(x) MXene)for fabricating highly stretchable and durable *** depositing and inserting HLNPs in the MXene layers with a bottom-up decreasing gradient,a multilayered porous MXene structure with smooth ion channels was constructed by reducing the overstacking of MXene ***,the micro-chamber architecture of thin-walled lignin nanospheres effectively extended the contact area between lignin and MXene to improve ion and electron accessibility,thus better utilizing the pseudocapacitive property of *** these strategies effectively enhanced the capacitive performance of the *** addition,HLNPs,which acted as a protective phase for MXene layer,enhanced mechanical properties of the wrinkled stretchable electrodes by releasing stress through slip and deformation during the stretch-release cycling and greatly improved the structural integrity and capacitive stability of the *** electrodes and symmetric flexible all-solid-state supercapacitors capable of enduring 600%uniaxial tensile strain were developed with high specific capacitances of 1273 mf cm^(−2)(241 F g^(−1))and 514 mf cm^(−2)(95 F g^(−1)),***,their capacitances were well preserved after 1000 times of 600%stretch-release *** study showcased new possibilities of incorporating biobased lignin nanospheres in energy storage devices to fabricate stretchable devices leveraging synergies among various two-dimensional nanomaterials.

关键词： Hollow lignin nanospheres MXene Gradient-layered architecture Wrinkled electrodes Stretchable supercapacitors

The affect of industrial activities on zinc in alluvial Egyptian soil determined using neutron activation analysis

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Journal of Environmental Sciences 2002年第3期14卷 330-332页

作者： Abde.mf Abde.N SoilandWaterPollutionUnit NuclearResearchCenterCairoEgypt NuclearPhysicsLaboratory PhysicsDepartmentFacultyofGirlsAinShamsUniversityCairoEgypt.E－mail：mamsab@***

Thirty two surface (0—20 cm) soil samples were collected from different locations in Egypt representing non polluted, moderately and highly polluted soils. The aim of this study was to evaluate total Zn content in alluvial soils of Nile Delta in Egypt by using the delayed neutron activation analysis technique (DNAA), in the irradiation facilities of the first Egyptian research reactor (ET RR 1). The gamma ray spectra were recorded with a hyper pure germanium detection system. The well resolved gamma ray peak at 1116.0 keV was efficiently used for 65 Zn content determination. Zn content in non polluted soil samples ranged between 74.1 and 103.8 ppm with an average of 98.5±5.1 ppm. Zn content in moderately polluted soils ranged between 136.0 and 232.5 ppm with an average of 180.1±32.6 ppm. The highest Zn levels ranging from 240.0 and 733.0 ppm with an average of 410.3±54.4 ppm, were observed in soil samples collected from, either highly polluted agricultural soils exposed to prolonged irrigation with industrial wastewater or surface soil samples from industrial sites.

关键词： elemental analysis pollution neutron activation analysis

Two New Amides from the Roots of Acorus Tatarinowii Schott

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Chinese Chemical Letters 1997年第1期8卷 35-36页

作者： Wang, mf Lao, AN Wang, HC ACAD SINICA SHANGHAI INST MAT MEDSHANGHAI 200031PEOPLES R CHINA

Two new amides, tataramide A (1) and tataramide B (2), were isolated from the roots of Acorus tatarinowii Schott. Their structures were determined by spectroscopic methods.

关键词： Two New Amides from the Roots of Acorus Tatarinowii Schott

Two New Isopimarane Diterpenes from theRoots of Acorus Tatarinowii Schott

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Chinese Chemical Letters 1997年第1期8卷 37-38页

作者： Wang, mf Lao, AN Wang, HC CHINESE ACAD SCI SHANGHAI INST MAT MED SHANGHAI 200031 PEOPLES R CHINA NIHON UNIV COLL PHARM FUNABASHI CHIBA 274 JAPAN

Two new isoprimarane diterpenes, tatarol (1) and tataroside (2) were isolated from the roots of Acorus tatarinowii Schott. Their structures were identified by spectral methods.

关键词： Two New Isopimarane Diterpenes from theRoots of Acorus Tatarinowii Schott

ABSOLUTE STABLE HOMOTOPY FINITE ELEMENT METHODS FOR CIRCULAR ARCH PROBLEM AND ASYMPTOTIC EXACTNESS POSTERIORI ERROR ESTIMATE

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Journal of Computational Mathematics 2002年第6期20卷 653-672页

作者： Feng, mf Ming, PB Yang, RK Sichuan Univ Dept Math Chengdu 610064 Peoples R China

In this paper, HFEM is proposed to investigate the circular arch problem. Optimal error estimates are derived, some superconvergence results are established, and an asymptotic exactness posteriori error estimator is presented. In contrast with the classical displacement variational method, the optimal convergence rate for displacement is uniform to the small parameter. In contrast with classical mixed finite element methods, our results are free of the strict restriction on h(the mesh size) which is preserved by all the previous papers. furtheremore we introduce an asymptotic exactness posteriori error estimator based on a global superconvergence result which is discovered in this kind of problem for the first time.

关键词： HFEM arch superconvergence asymptotic exactness posteriori error estimator

Chemisorbed　dimethylammonium　chlorochromate　as　selective　oxidants　for　primary　and　second　aryAlcohols

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Chinese Chemical Letters 1996年第11期7卷 973-974页

作者： Zhang, GS Shi, QZ Chen, mf Cai, K HENAN NORMAL UNIV DEPT CHEMXINXIANG 453002PEOPLES R CHINA

Two new reagents. dimethylammonium chlorochromale adsrbed on alumina and silicagel are describe as convenient reagents for efficient oxidation of a variety of primary and secondaryalcohols. These two reagents are very... 详细信息

关键词： selective and aryAlcohols chlorochromate dimethylammonium oxidants primary Chemisorbed

Antioxidant and anti-glycation activities correlates with phenolic composition of tropical medicinal herbs

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Asian Pacific Journal of Tropical Medicine 2013年第7期6卷 561-569页

作者： JS Ramkissoon mf Mahomoodally N Ahmed AH Subratty Department of Health Sciences Faculty of ScienceUniversity of MauritiusReduitMauritius School of Healthcare Science Manchester Metropolitan UniversityManchesterUnited Kingdom Department of Health Sciences Faculty of ScienceUniversity of Mauritius.ReduitMauritius

To determine the contribution of total phenolic content(TPC) in glycation inhibitory activity of common tropical medicinal food and spices with potential antioxidative properties. Methods:In vitro glucose-bovine serum albumin(BSA) assay was *** extracts of ten common household condiments/herbs(Allium *** *** rulgaris, Petroselinum crispum,Murraya koenigii Spreng,Mentha piperita L.,Curcuma longa L.,Allium cepa L.,Allium fistulosum and Coriandrum sativum L.) were evaluated for antinxidative activity by 2,2-diphenyl-2-picrylhydrazyl(DPPH),and ferric reducing antioxidant power(FRAP) and the *** and tannins content were ***:Findings showed good correlation between TPC/DPPH(r= 0.8).TPC/FRAP(r= 0.8).TPC/Anti-glycation(r=0.9).DPPH/Anti-glycation (r= 0.6),FRAP/Anti-glycation(r = 0.9),Flavonoid/Anti-glycation(r=0.7) and Tannina/Antiglycation (r = 0.8) and relatively fair correlation for TPC/Flavonoids(r = 0.5) and TPC/Tannina(r = 0.5).Results imply that these plants are potential sources of natural antioxidants which have free radical scavenging activity and might be used for reducing oxidative ***:The positive glycation inhibitory and antioxidative activities of these tropical herbs suggest a possible role in targeting ageing,diabetic complications and oxidative stress related diseases.

关键词： Food plants Anti-glycation AGEs Antioxidants TPC DPPH FRAP

Testing and Modeling of Bituminous Mortar Response

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Journal of Wuhan University of Technology(Materials Science) 2010年第4期25卷 637-640页

作者： Woldekidan mf Huurman M Mo LT Department of Civil Engineering Delft University of Technology Key Laboratory of Silicate Materials Science and Engineering Wuhan University of Technology

A dynamic shear rheometer （DSR） setup, with a modified test geometry specifically developed for the mortar, was used to conduct time and frequency domain tests. The mortar was composed of a pure bitumen, filler and fine fractions of sand. In the test setup two mounting procedures were compared and the one that delivers better test result repeatability was selected. Test results obtained from frequency domain tests were used to construct a master curve using time-temperature superposition principle （TTS）. Time domain material functions were obtained from the master curve by using frequency-time domain inter-conversion. In this process a series of Kelvin-Voigt element were used. Using material parameters obtained from frequency domain results, creep-recovery tests in time domain were simulated using a Matlab program. Results show a very good agreement with experimentally obtained creep-recovery data.

关键词： DSR mortar response master curve Kelvin-Voigt

Lead-promoted Barbier-type reaction of aldehydes with propargyl bromides in aqueous media

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Chinese Journal of Chemistry 1997年第4期15卷 361-365页

作者： Zhou, JY Sun, GF Zhang, mf Jia, Y Wu, SH Department of Chemistry Fudan University Shanghai 2004433 China

This paper reports that the reaction of the propargyl bromides with aldehydes promoted by powdered lead in aqueous media. The selectivity and possible mechanism of these reactions are discussed. The yields of products for reaction of propargyl bromide are 31 similar to 71%. The ratios of allenyl alcohol and homopropargyl alcohol are 1:1.5 to 1:3. The product for reaction of phenyl propargyl bromide is allenyl alcohol and the yields are 52 similar to 84%.

关键词： lead reagent Barbier-type reaction propargyl bromides aqueous media