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CCS Chemistry 2021年第10期3卷 2607-2616页

作者： Di Wang Zhe-Ning Chen Qing-Rong Ding Cheng-Cheng Feng San-Tai Wang Wei Zhuang Lei Zhang State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujian 350002 University of Chinese Academy of Sciences Beijing 100049

Tin oxides(SnO_(2))have been widely utilized in electronics,nanolithography,and *** the atomically precise models of SnO_(2),tin-oxo clusters(TOCs)not only provide opportunities for mechanism studies,but they also extend potential applications through structural ***,to date,most of the reported TOCs belong to alkyl organotin complexes,which are usually toxic to the human body and the active sites are difficult to expose for catalysis.

关键词： cluster compounds tin oxides atomic structure green synthesis electrocatalytic CO_(2)red uction

Biological activities of silver nanoparticles from Nothapodytes nimmoniana(Graham)*** extracts

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Food Science and Human Wellness 2016年第4期5卷 207-218页

作者： G.Mahendran B.D.Ranjitha Kumari Department of Plant Science School of Life SciencesBharathidasan UniversityTiruchirappalli620024 Tamil NaduIndia

In the present investigation,we have described the green biosynthesis of silver nanoparticles(AgNPs)using ripened fruit aqueous extract of Nothapodytes nimmoniana(Graham)*** capping *** antioxidant,anticancer and antimicrobial activities of AgNPs were also *** analysis revealed that AgNPs had a sharp peak at 416 nm.X-ray diffraction(XRD)result confirmed the characteristic peaks indicated at 111,200,220 and 311 for the crystalline of the face centered cubic *** Scanning Electron Microscopy analysis results confirmed the spherical shaped of AgNPs with difference sizes of the particles and an average from 44 to 64 ***,fruit extract and AgNPs were evaluated total phenolic,tannin and flavonoid contents and were subjected to assess their antioxidant potential using various in vitro systems such as using 1,1-diphenyl-2-picryl-hydrazyl(DPPH),2,2-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid)(ABTS),metal chelating,phosphomolybdenum and ferric reducing antioxidant power(FRAP)activities and antimicrobial activity against Bacillus subtilis,Pseudomonas aeruginosa,Klebsiella pneumoniae,Staphylococcus aureus and Escherichia *** compared to AgNPs,fruit extract exhibited uppermost radical scavenging *** addition,the cytotoxicity activity was determined by MTT *** results clearly proved that biosynthesized AgNPs inhibited proliferation of HeLA cell line with an IC50 of 87.32±1.43g/mL and antibacterial activity.

关键词： Silver nanoparticles green synthesis Cytotoxicity Antioxidant DPPH FRAP XRD Nothapodytes nimmoniana

Development of catalyst-free carbon-sulfur bond formation reactions under aqueous media and their applications

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green synthesis and Catalysis 2022年第4期3卷 309-316页

作者： Min Sun Kang Joycelyn Yi Xin Khoo Zhenhua Jia Teck-Peng Loh Division of Chemistry and Biological Chemistry School of ChemistryChemical Engineering and Biotechnology(CCEB)Nanyang Technological UniversitySingapore 637371Singapore Henan University of Technology 100 Lianhua StZhongyuan DistrictZhengzhou 450001China

Methods for the carbon-sulfur bond formation under catalyst-free,aqueous conditions are extremely useful in organic synthesis and chemical *** laboratory has developed methodologies to construct carbon-thiol bonds,carbon-sulfinic acid bonds,and carbon-disulfide bonds and such methodologies have been widely adopted by other research groups over multidisciplinary *** this article,our work on C-S bond formation in an aqueous solvent and its corresponding applications is summarized.

关键词： green synthesis Biocompatible Water-based reaction Biologics C-S bond

Indium-mediated Facile synthesis of 4-Thioquinazoline Compounds in Aqueous Media

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Indium-mediated Facile Synthesis of 4-Thioquinazoline Compou...

中国化学会第27届学术年会

作者：刘刚刘希光纪春暖 School of Chemistry and Materials Science Ludong University

＜正＞Quinazoline compounds take on good biological activity in medicine and pesticide. As part our ongoing research program on heterocyclic compounds which may serve as leads for designing

关键词： Quinazoline green synthesis indium antifungal activity.

Morphology Controllable synthesis and Characterization of CuO Microstructures

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Morphology Controllable Synthesis and Characterization of Cu...

The 4th International Conference on Environmental Technology and Knowledge Transfer

作者： HU Hanmei XU Junchan Anhui Key Laboratory of Advanced Building Materials Anhui University of Architecture

Various CuO microstructures（willow-leaf-like,corn-leaf-like,bow-tie-like,fish-scale-like,ball-flower-like） were controllably synthesized by a green and eco-friendly microwave-assisted chemical *** products were characterized by X-ray diffraction（XRD）,field-emission scanning electron microscopy（FESEM）,high resolution transmission electron microscopy（HRTEM）.The experimental results demonstrated that the morphology of CuO products could be controlled by varying the concentration of NaOH and microwave irradiating *** growth mechanism of CuO microstructures was simply discussed.

关键词： green synthesis microstructure copper oxide

A method to synthesize CdSe nanocrystals

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Frontiers of Chemical Science and Engineering 2007年第4期1卷 377-380页

作者： XIE Chuang CHEN Wei WANG Jingkang School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072China

CdSe nanocrystals(NCs)have great application prospects in various fields due to their novel *** high-cost and toxic materials such as tri-n-octylphosphine oxide(TOPO)are used in the popular method to synthesize CdSe *** on this,a new low-cost,environment-friendly and safe solvent was introduced in the synthesis of CdSe NCs in this *** prepared CdSe NCs were char-acterized by ultraviolet-visible spectra(UV-Vis),photolu-minescence(PL),transmission electron micrograph(TEM),energy disperse X-ray spectra(EDX)and X-ray diffraction(XRD).The CdSe NCs obtained which show a good PL pro-perty are monodisperse,size-tunable and of high *** indicates that the new solvent A is a good substitute for the solvent used in the classic route and achieves a greener synthesis of CdSe NCs.

关键词： CdSe semiconductor NCs non-aqueous method green synthesis

Biosynthesis of Zinc Oxide Nanoparticles Using Ixora Coccinea Leaf Extract—A green Approach

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Open Journal of synthesis Theory and Applications 2016年第1期5卷 1-14页

作者： Snehal Yedurkar Chandra Maurya Prakash Mahanwar Department of Chemistry Guru Nanak Khalsa College Mumbai India Department of Polymer and Surface Engineering Institute of Chemical Technology Mumbai India

green synthesis of metal oxide nanoparticles using plant extract is a promising alternative to traditional method of chemical synthesis. In this paper, we report the synthesis of nanostructured zinc oxide particles by biological method. Highly stable and spherical zinc oxide nanoparticles are produced by using zinc acetate and Ixora coccinea leaf extract. Formation of zinc oxide nanoparticles has been confirmed by UV-Vis absorption spectroscopy, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Dynamic light scattering analysis (DLS), zetapotential study and Scanning Electron Microscope with the Energy Dispersive X-ray studies (EDX). Dynamic light scattering analysis shows average particle size of 145.1 nm whereas high zeta potential value confirms the stability of formed zinc oxide nanoparticles. The Scanning Electron Microscope reveals spherical morphology of nanoparticles and Energy Dispersive X-ray analysis confirms the formation of highly pure zinc oxide nanoparticles. The zinc oxide nanoparticles from Ixora coccinea leaves are expected to have applications in biomedical, cosmetic industries, biotechnology, sensors, medical, catalysis, optical device, coatings, drug delivery and water remediation, and also may be applied for electronic and magneto-electric devices. This new eco-friendly approach of synthesis is a novel, cheap, and convenient technique suitable for large scale commercial production.

关键词： Zinc Oxide Nanoparticles Ixora coccinea green synthesis XRD DLS EDX

Nanoparticle Treatments Based on Zinc Oxide and Moringa oleifera Leaf Extracts Alleviate Salinity Stress in Faba Bean (Vicia faba L.)

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Journal of Agricultural Chemistry and Environment 2022年第1期11卷 42-65页

作者： Sherif M. Ragab Losenge Turoop Steven Runo Steven Nyanjom Department of Molecular Biology and Biotechnology Pan African University Institute of Science Technology and Innovation Nairobi Kenya Department of Biochemistry Faculty of Agriculture Al-Azhar University Cairo Egypt Department of Horticulture and Food Security Jomo Kenyatta University of Agriculture and Technology Nairobi Kenya Department of Biochemistry Microbiology and Biotechnology Kenyatta University Nairobi Kenya Department of Biochemistry Jomo Kenyatta University of Agriculture and Technology Nairobi Kenya

Salinity stress limits crop growth and productivity, including legumes in various regions worldwide. The impact of foliar-applied zinc nanoparticles (ZnNPs) and combined zinc nano-loaded with moringa extracts (ZnONPs) on salt tolerance in faba beans (cultivar, Giza-716) grown under saline soil (50 and 100 mM NaCl) was investigated. Moringa oleifera extract has been used as a chelating agent to synthesize zinc oxide nanoparticles. The crystalline structure, morphology, and chemical composition of ZnO nanoparticles were studied using various characterization techniques, including UV-visible spectroscopy (UV), Fourier Transform Infrared Analysis (FTIR), scanning electron microscopy (SEM), and X-ray diffraction (XRD). Morphological, chemical, and biochemical parameters of plants at 60 and 90 days after sowing were assessed. Salinity stress caused a remarkable reduction in growth traits, photosynthetic pigments and proline levels of the faba bean. Foliar spray with ZnNPs and ZnONPs on faba bean grown under saline soils promoted plant growth parameters (i.e., shoot length, numbers of leaves, relative water content, shoot and roots fresh and dry weights), photosynthetic pigments (Chl a, b, total chlorophyll, and carotenoids), proline and mineral elements (Na+, K+, Ca2+, and Zn2+) compared to control. However, at 100 mM NaCl, there were no significant variations in the mentioned parameters. This study suggested that there is potential for foliar spraying with ZnNPs and ZnONPs in improving growth parameters, photosynthesis efficiency and biochemical aspects of faba bean plants under saline conditions.

关键词： Faba Bean green synthesis ZnO Nanoparticles Salinity Stress Proline

green-Synthetic Multifunctional Polymer Micelles with Shell Embedded Magnetic Nanoparticles for Theranostic Applications

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Green-Synthetic Multifunctional Polymer Micelles with Shell ...

2013年全国高分子学术论文报告会

作者： Li Yongyong Ma Junping Dong Haiqing The Institute for Biomedical Engineering and Nano Science Tongji University

＜正＞The objective of this study is to design and develop a green-synthetic,multifunctional hybrid micelles with shell embedded magnetic nanoparticles for theranostic applications.

关键词： green synthesis multifunction hybrid micelles MRI imaging theranostics

Organoselenium functional materials in catalysis

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Organoselenium functional materials in catalysis

中国化学会第十三届全国有机合成化学学术研讨会

作者： Lei Yu School of Chemistry ＆ Chemical Engineering Yangzhou University

Our group is interested in organoselenium catalyzed reactions because of their green processes that generate no wastes,and because of the possibility to recycle and reuse the robust organoselenium catalysts,which is a very important issue in industrial *** the past three years,we have developed a series of green methods to synthesize the useful compounds,such as trans-1,2-cyclohexanediol,1 vinyl esters,2 β-ionone derivatives,3 isatoic anhydrides,4 4-methylenebutanolides,5 cyclobutanones6 and *** industrial point of view,a good catalyst should be recyclable and reusable after ***,homogeneous organoselenium catalysts could be recycled through filtration,distillation or extraction,depending on the physical properties of *** should be the most convenient method to recycle catalyst,but could be employed only when the products were insoluble and precipitated after ***-boiling-point products could be separated by distillation,while the residue,containing a series of selenium species,could be reused as catalyst in next turn of *** because many of the organoselenium-catalyzed reactions employed H2 O2,it might be dangerous for distillation processes in large-scale *** might be a universal technique to separate water-insoluble products from the aqueous solution containing organoselenium *** because selenium species might be partially soluble in organic solvent,accumulated loss of catalyst in each turn of reaction resulted in a considerable decrease of product *** resolve the above problems,we recently designed and prepared the polymer-supported organoselenium catalyst and successfully applied it in the dihydroxylation of cyclohexene to produce trans-1,2-cyclohexanediol.1 c We were very surprised to find that the property of Se on polymer was quite different form that in small *** Se,which was rarely seen in small organoselenium molecules,was found to be s

关键词： selenium organic functional materials catalysis green synthesis