Author: Zhengwei ZhangPublisher:
ISBN:
Category : Graphite intercalation compounds
Languages : en
Pages : 260
Book Description
The Electrochemical Synthesis and Characterization of Graphite Intercalation Compounds and Luminescent Porous Silicon
Author: Zhengwei ZhangPublisher:
ISBN:
Category : Graphite intercalation compounds
Languages : en
Pages : 260
Book Description
Dissertation Abstracts International
Author: Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 844
Book Description
Synthesis and Structural Characterization of Graphite Intercalation Compounds (GICs)
Author: Xuerong ZhangPublisher:
ISBN:
Category : Graphite intercalation compounds
Languages : en
Pages : 414
Book Description
Electrochemical Synthesis of Graphite Intercalation Compounds with Low-or Non-sulfur Content
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
HKUST Call Number: Thesis MECH 1997 Kang.
Synthesis, Characterization, and Structural Modeling of Graphite Intercalation Compounds with Fluoroanions
Author: Wei YanPublisher:
ISBN:
Category : Graphite intercalation compounds
Languages : en
Pages : 340
Book Description
Graphite Intercalation with Fluoroanions by Chemical and Electrochemical Methods
Author: Bahar Ozmen MonkulPublisher:
ISBN:
Category : Graphite fluorides
Languages : en
Pages : 338
Book Description
New acceptor-type graphite intercalation compounds (GICs) containing perfluoroalkyl anions have been synthesized by using both chemical and electrochemical methods and characterized by elemental and thermogravimetric analyses. Investigation into these graphite intercalation compounds can provide novel materials and a detailed understanding of their properties. GICs of composition Cx[FB(C2F5)3]·[delta]F are prepared for the first time by the intercalation of fluoro-tris(pentafluoroethyl)borate anion, [FB(C2F5)3]−, under ambient conditions in aqueous (48 %) hydrofluoric acid containing the oxidant K2[MnF6].Powder-XRD data indicate that products are pure stage 2 and physical mixture of stage 2 and stage 3 after 1 h to 20 h reaction times. The calculated basal repeat distance, Ic, is 1.20 nm for stage 2 and 1.54-1.56 nm for stage 3 GICs, corresponding to gallery heights of di= 0.86-0.89 nm. In addition, stage 2 GIC of Cx[FB(C2F5)3]·[delta]CH3NO2 having di=0.84 nm is prepared by electrochemical oxidation of graphite in a nitromethane electrolyte. The elemental analyses of these complex GICs required that a new sample digestion protocol be developed. After digestion, the fluoride amounts in these GIC samples were analyzed by using ion-selective fluoride combination electrode. The method developed is able to provide fluoride anion content in GICs without interference from the decomposition products of [FB(C2F5)3]- anion. For the boron analyses the same digestion procedure above is used and the B contents were determined by ICP-AES. For Cx[FB(C2F5)3]·[delta]F, both compositional parameters x and [delta] are obtained from the results of elemental B and F analyses. For the chemically prepared GICs at 1 h to 20 h, calculated x values were in the range of 51-56 and the calculated [delta] values increased with reaction time from approx. 0-2. Combining B analysis and TGA mass loss gives a composition of x=44 and [delta]= 0.37 for the electrochemically prepared GIC of Cx[FB(C2F5)3]·[delta]CH3NO2. Energy minimized structure for the isolated borate anion and powder XRD data show that the borate anions adopt a "lying-down" orientation where the long axes of [FB(C2F5)3]- intercalate anions are parallel to the encasing graphene sheets. The same electrochemical synthesis strategy is also used for the preparation of a new acceptor-type GIC containing the cyclo-hexafluoropropane-1,3-bis(sulfonyl)amide anion, [CF2(CF2SO2)2N]−. The gallery heights of 0.85-0.86 nm are determined by powder X-ray diffraction for stage 2 and 3 products. These GICs are obtained by electrochemical oxidation of graphite in a nitromethane electrolyte. GICs containing the linear anion, [(CF3SO2)2N]− are also prepared in order to compare the gallery heights and the electron charge distributions that helps to understand the GIC stabilities within the graphene sheets. The compositions of GICs containing [CF2(CF2SO2)2N]− are determined by thermogravimetric, fluorine and nitrogen elemental analyses. GICs of composition Cx[(C2F5)3PF3] are prepared for the first time by the intercalation of tris(pentafluoroethyl trifluorophosphate (FAP) anion, [(C2F5)3PF3]− by electrochemical oxidation of graphite. Powder-XRD data indicate that products are of stages 2-4 with gallery heights of 0.82-0.86 nm. These GICs are characterized by the same methods using TGA and F ion selective probe analyses.
Ceramic Abstracts
Author: Physics Briefs
Author: Nanomaterials for Drug Delivery and Therapy
Author: Alexandru Mihai GrumezescuPublisher: William Andrew
ISBN: 0128166290
Category : Medical
Languages : en
Pages : 580
Book Description
Nanomaterials for Drug Delivery and Therapy presents recent advances in the field of nanobiomaterials and their important applications in drug delivery, therapy and engineering. The book offers pharmaceutical perspectives, exploring the development of nanobiomaterials and their interaction with the human body. Chapters show how nanomaterials are used in treatments, including neurology, dentistry and cancer therapy. Authored by a range of contributors from global institutions, this book offers a broad, international perspective on how nanotechnology-based advances are leading to novel drug delivery and treatment solutions. It is a valuable research resource that will help both practicing medics and researchers in pharmaceutical science and nanomedicine learn more on how nanotechnology is improving treatments. Assesses the opportunities and challenges of nanotechnology-based drug delivery systems Explores how nanotechnology is being used to create more efficient drug delivery systems Discusses which nanomaterials make the best drug carriers
Carbon-based Nanomaterials in Analytical Chemistry
Author: Carlos D GarciaPublisher: Royal Society of Chemistry
ISBN: 1788015339
Category : Science
Languages : en
Pages : 256
Book Description
Presenting the most relevant advances for employing carbon-based nanostructured materials for analytical purposes, this book serves as a reference manual that guides readers through the possibilities and helps when selecting the most appropriate material for targeted analytical applications. It critically discusses the role these nanomaterials can play in sample preparation, separation procedures and detection limit improvements whilst also considering the future trends in this field. Useful to direct initiatives, this book fills a gap in the literature for graduate students and professional researchers discussing the advantages and limitations across analytical chemistry in industry and academia.