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Author: Uzma Tanveer Publisher: ISBN: 9781392793732 Category : Analytical chemistry Languages : en Pages : 0
Book Description
Prussian blue and its analogues have been widely applied in the field of environment, energy, catalysis and sensor fabrication. In addition, they are very economical composed of low-cost abundant metals. To better understand their properties and working mechanisms, we carried out research work in three areas. Our first approach was the modification of the screen-printed carbon electrode (SPCE) with Prussian blue nanoparticles synthesized using two different couples of precursors with two different ratios and the analysis of their electrochemical performance by using cyclic voltammetry. SPCE modified with 20 layers of Prussian blue nanoparticles prepared by using potassium ferricyanide and ferrous chloride as precursors and polyvinyl pyrrolidone (PVP) as the surfactant with ratio [PVP] / [Fe2+]=11/40, produced the best results with a sensitivity of 6ÎơA8́9mM-1to hydrogen peroxide. Secondly, we successfully investigated single Prussian blue nanoparticle electrochemistry by electrochemical surface plasmon resonance microscopy technique before and after the addition of hydrogen peroxide. Lastly, computational studies were also performed to study the structural and electronic properties of Prussian blue, Prussian white, ferric hexacyanide and ferrous hexacyanide using NWChem ab initio computational chemistry software package. We successfully optimized ferric hexacyanide and ferrous hexacyanide at all three level of theories. We were able to optimize high and low spin Prussian blue at Hartree-Fock and Prussian white at the Hartree-Fock and density functional theory (DFT) level of theory for Becke, 3parameter, Lee-Yang-Parr (B3LYP) and density functional theory (DFT) and Minnesota 2006 local functionals (UM06-L) were combined with the 6-311G* basis set. These computational studies will significantly help to design Prussian blue analogues sensors tailored with higher capabilities for the reduction of hydrogen peroxide.
Author: Uzma Tanveer Publisher: ISBN: 9781392793732 Category : Analytical chemistry Languages : en Pages : 0
Book Description
Prussian blue and its analogues have been widely applied in the field of environment, energy, catalysis and sensor fabrication. In addition, they are very economical composed of low-cost abundant metals. To better understand their properties and working mechanisms, we carried out research work in three areas. Our first approach was the modification of the screen-printed carbon electrode (SPCE) with Prussian blue nanoparticles synthesized using two different couples of precursors with two different ratios and the analysis of their electrochemical performance by using cyclic voltammetry. SPCE modified with 20 layers of Prussian blue nanoparticles prepared by using potassium ferricyanide and ferrous chloride as precursors and polyvinyl pyrrolidone (PVP) as the surfactant with ratio [PVP] / [Fe2+]=11/40, produced the best results with a sensitivity of 6ÎơA8́9mM-1to hydrogen peroxide. Secondly, we successfully investigated single Prussian blue nanoparticle electrochemistry by electrochemical surface plasmon resonance microscopy technique before and after the addition of hydrogen peroxide. Lastly, computational studies were also performed to study the structural and electronic properties of Prussian blue, Prussian white, ferric hexacyanide and ferrous hexacyanide using NWChem ab initio computational chemistry software package. We successfully optimized ferric hexacyanide and ferrous hexacyanide at all three level of theories. We were able to optimize high and low spin Prussian blue at Hartree-Fock and Prussian white at the Hartree-Fock and density functional theory (DFT) level of theory for Becke, 3parameter, Lee-Yang-Parr (B3LYP) and density functional theory (DFT) and Minnesota 2006 local functionals (UM06-L) were combined with the 6-311G* basis set. These computational studies will significantly help to design Prussian blue analogues sensors tailored with higher capabilities for the reduction of hydrogen peroxide.
Author: Yannick Guari Publisher: CRC Press ISBN: 0429658648 Category : Science Languages : en Pages : 314
Book Description
Nanochemistry tools aid the design of Prussian blue and its analogue nanoparticles and nanocomposites. The use of such nanomaterials is now widely regarded as an alternative to other inorganic nanomaterials in a variety of scientific applications. This book, after addressing Prussian blue and its analogues in a historical context and their numerous applications over time, compiles and details the latest cutting-edge scientific research on these nanomaterials. It compiles and deatils the latest cutting-edge scientific research on these nanomaterials. The book provides an overview of the methodological concepts of the nanoscale synthesis of Prussian blue and its analogues, as well as the study and understanding of their properties and of the extent and diversity of application fields in relation to the major societal challenges of the 21st century on energy, environment, and health.
Author: Richard C. Alkire Publisher: John Wiley & Sons ISBN: 3527340947 Category : Science Languages : en Pages : 548
Book Description
Volume XVII in the "Advances in Electrochemical Science and Engineering" series, this monograph covers progress in this rapidly developing field with a particular emphasis on important applications, including spectroscopy, medicinal chemistry and analytical chemistry. As such it covers nanopatterned and nanoparticle-modified electrodes for analytical detection, surface spectroscopy, electrocatalysis and a fundamental understanding of the relation between the electrode structure and its function. Written by a group of international experts, this is a valuable resource for researchers working in such fields as electrochemistry, materials science, spectroscopy, analytical and medicinal chemistry.
Author: Adaly Oliva Garcia Publisher: ISBN: Category : Analytical chemistry Languages : en Pages : 0
Book Description
Prussian blue is an iron-cyanide-based pigment steadily becoming a widely used electrochemical sensor in detecting hydrogen peroxide at low concentration levels. Prussian blue nanoparticles (PBNPs) have been extensively studied using traditional ensemble methods, which only provide averaged information. Investigating PBNPs at a single entity level is paramount for correlating the electrochemical activities to particle structures and will shed light on the major factors governing the catalytic activity of these nanoparticles. This work reports using plasmonic electrochemical microscopy (PEM) to study the electrochemistry of PBNPs at the individual nanoparticle level. First, two types of PBNPs were synthesized; type I synthesized with double precursors method and type II synthesized with polyvinylpyrrolidone (PVP) assisted single precursor method. Second, both PBNPs types were compared on their electrochemical reduction to form Prussian white, and the effect from the different particle structures was investigated. Type I PBNPs provided better PEM sensitivity and were used to study the catalytic reduction of hydrogen peroxide. Progressively decreasing plasmonic signals with respect to increasing hydrogen peroxide concentration were observed, which demonstrated the capability of sensing hydrogen peroxide at single nanoparticle level utilizing this optical imaging technique.
Author: Paulo Roberto Bueno Publisher: Springer ISBN: 9783319904863 Category : Science Languages : en Pages : 84
Book Description
This book discusses the merging of nanoscale electronics and electrochemistry and how this can potentially modernize the way electronic devices are currently engineered or constructed. It introduces the electrochemical capacitance as a fundamental missing concept that solves the puzzle between molecular electronics and electrochemistry at the nanoscale. The electrochemical capacitance, as a fundamental principle, is deduced from first principles quantum mechanics. The text also confirmed that faradaic and non-faradaic processes are only different physical approximations of the same sort of energetic phenomenon.The book comprises three chapters. Chapter one introduces the concepts of chemical capacitance, relaxation resistance, and the quantum resistive-capacitive circuit and demonstrates how these elements are translated to the electrochemistry context. In chapter two, the chemical capacitance, the fundamental concept and missing part of the puzzle that unity electronics and electrochemistry, is deduced from first principles of quantum mechanics. In chapter three, the concepts are practically used in different contexts that include molecular diagnostics, molecular conductance and super-capacitive phenomena is explained using the introduced basic principles.
Author: Wolfram Hergert Publisher: Springer ISBN: 3642287387 Category : Science Languages : en Pages : 268
Book Description
This book presents in a concise way the Mie theory and its current applications. It begins with an overview of current theories, computational methods, experimental techniques, and applications of optics of small particles. There is also some biographic information on Gustav Mie, who published his famous paper on the colour of Gold colloids in 1908. The Mie solution for the light scattering of small spherical particles set the basis for more advanced scattering theories and today there are many methods to calculate light scattering and absorption for practically any shape and composition of particles. The optics of small particles is of interest in industrial, atmospheric, astronomic and other research. The book covers the latest developments in divers fields in scattering theory such as plasmon resonance, multiple scattering and optical force.
Author: Alexandru Grumezescu Publisher: Academic Press ISBN: 0128043725 Category : Science Languages : en Pages : 928
Book Description
Nanobiosensors: Nanotechnology in the Agri-Food Industry, Volume 8, provides the latest information on the increasing demand for robust, rapid, inexpensive, and safe alternative technologies that monitor, test, and detect harmful or potentially dangerous foods. Due to their high sensitivity and selectivity, nanobiosensors have attracted attention for their use in monitoring not only biological contaminants in food, but also potential chemical and physical hazards. This book offers a broad overview regarding the current progress made in the field of nanosensors, including cutting-edge technological progress and the impact of these devices on the food industry. Special attention is given to the detection of microbial contaminants and harmful metabolotes, such as toxins and hormones, which have a great impact on both humans and animal health and feed. Includes the most up-to-date information on nanoparticles based biosensors and quantum dots for biological detection Provides application methods and techniques for research analysis for bacteriological detection and food testing Presents studies using analytical tools to improve food safety and quality analysis
Author: Emilio I. Alarcon Publisher: Springer Nature ISBN: 3030312615 Category : Technology & Engineering Languages : en Pages : 208
Book Description
This book fills the gap between fundamental and applied research in the use of nanomaterials in biomedical applications, covering the most relevant areas, such as the fundamental concepts of the preparation of nanostructures and regulatory requirements for their safe use in biomedical devices. It also critically discusses what has been achieved in the field, and what needs to be urgently addressed and reviews the state-of-the-art medical uses of nanomaterials for treating damaged organs and tissues. Combining the expertise of clinical researchers working in the field of tissue engineering and novel materials, the book explores the main topics regarding the characterization of materials, specific organ-oriented biomaterials and their applications, as well as regulations and safety. Further, it also examines recent advances, difficulties, and clinical requirements in terms of human bone, cornea, heart, skin and the nervous system, allowing readers to gain a clear and comprehensive understanding of current nanomaterial use in biomedical applications and devices, together with the challenges and future trends. This book is a valuable tool for multidisciplinary scientists and experts interested in fundamental concepts and synthetic routes for preparing nanomaterials. It is also of interest to students and researchers involved in cross-disciplinary research in nanomaterials for clinical applications and offers practical insights for clinicians as well as engineers and materials scientists working in nanoengineering.
Author: Annemie Bogaerts Publisher: MDPI ISBN: 3038977500 Category : Technology & Engineering Languages : en Pages : 248
Book Description
Plasma catalysis is gaining increasing interest for various gas conversion applications, such as CO2 conversion into value-added chemicals and fuels, N2 fixation for the synthesis of NH3 or NOx, methane conversion into higher hydrocarbons or oxygenates. It is also widely used for air pollution control (e.g., VOC remediation). Plasma catalysis allows thermodynamically difficult reactions to proceed at ambient pressure and temperature, due to activation of the gas molecules by energetic electrons created in the plasma. However, plasma is very reactive but not selective, and thus a catalyst is needed to improve the selectivity. In spite of the growing interest in plasma catalysis, the underlying mechanisms of the (possible) synergy between plasma and catalyst are not yet fully understood. Indeed, plasma catalysis is quite complicated, as the plasma will affect the catalyst and vice versa. Moreover, due to the reactive plasma environment, the most suitable catalysts will probably be different from thermal catalysts. More research is needed to better understand the plasma–catalyst interactions, in order to further improve the applications.
Author: Uzma Tanveer
Author: Uzma Tanveer
Author: Yannick Guari
Author: Richard C. Alkire
Author: Adaly Oliva Garcia
Author: En Ning Saw
Author: Paulo Roberto Bueno
Author: Wolfram Hergert
Author: Alexandru Grumezescu
Author: Emilio I. Alarcon
Author: Annemie Bogaerts