Designing ordered nanoarrays from aqueous solutions

2006 ◽  
Vol 78 (9) ◽  
pp. 1741-1747 ◽  
Author(s):  
Lionel Vayssieres
Keyword(s):  
Aqueous Solutions ◽  
Large Scale ◽  
Metal Salt ◽  
Essential Feature ◽  
Low Cost ◽  
Synthesis Method ◽  
Functional Materials ◽  
Building Blocks ◽  
Hole Transport ◽  
The Creation

The design and large-scale fabrication of ordered arrays consisting of advanced and well-defined building blocks such as quantum dots, nanorods, and nanowires is essential to the creation of new devices based on nanoscience. A concept as well as a growth model and a thin film technique have been developed by the author to contribute to these challenges. These ideas and synthesis method led to the creation of a new generation of functional materials from aqueous solutions with designed morphology and orientation, which are in better adequacy with their applications. Nanomaterials are growing directly onto various substrates by heteronucleation from the thermohydrolysis of aqueous metal salt precursors. Although this bottom-up technique allows the generation of anisotropic and oriented building blocks of various length scales and on many types of substrates, it is carried out without template, surfactant, applied field, or undercoating. Therefore, high-purity, low-cost, and large-scale fabrication of advanced nanomaterials is achieved. In addition, the direct contact growth between 1-D building blocks and their substrate is an essential feature to take full advantage of oriented nanorods, that is, a direct path for electron/hole transport. This specific conformation is of particular interest in developing more efficient devices such as sensors and photovoltaic cells.

Classification of Spatially Confined Reactions and the Electrochemical Applications of Molybdenum-Based Nanocomposites

2020 ◽  
Vol 73 (7) ◽  
pp. 587
Author(s):  
Sitong Guo ◽  
Wen Tan ◽  
Jiyicheng Qiu ◽  
Jinlong Du ◽  
Zhanxu Yang ◽  
...  
Keyword(s):  
Electrode Materials ◽  
Low Cost ◽  
Synthesis Method ◽  
Reaction System ◽  
Functional Materials ◽  
Materials Synthesis ◽  
Material Synthesis ◽  
Electrochemical Application ◽  
And Performance

As a popular material synthesis method, spatially confined reactions have been gradually recognised for their excellent performance in the field of current materials synthesis. In recent years, molybdenum-based catalysts have gradually gained recognition due to high natural reserves of Mo, its low cost, and many other advantages, and they have wide applications in the area of functional materials, especially in topical areas such as batteries and electrocatalysts. In this context, spatially confined reactions have become widely to obtain various types of molybdenum-based electrode materials and electrocatalysts which result in an excellent morphology, structure, and performance. In this review, the concept of a spatially confined reaction system and the electrochemical application (electrode materials and electrocatalyst) of molybdenum-based materials synthesised in this way are comprehensively discussed. The current problems and future development and application of molybdenum-based materials are also discussed in this review.

scholarly journals Fabrication of Functional Materials for Dye-sensitized Solar Cells

2021 ◽  
Vol 9 ◽  
Author(s):  
Sarawut Tontapha ◽  
Pikaned Uppachai ◽  
Vittaya Amornkitbamrung
Keyword(s):  
Solar Cells ◽  
Large Scale ◽  
Low Cost ◽  
Dye Sensitized Solar Cells ◽  
Light Condition ◽  
Functional Materials ◽  
Scale Production ◽  
Dye Sensitized ◽  
Wide Range ◽  
Sensitized Solar Cells

Dye-sensitized solar cells (DSSCs) have been developed as a promising photovoltaic cell type in recent decades because of their low cost, environmental friendliness, ease of fabrication, and suitability for a wide range of indoor and outdoor applications, especially under diverse shaded and low-light condition. They are typically composed of three main components: a transparent conducting oxide (TCO) substrate-based working electrode with wide-bandgap semiconductors and dye sensitizer molecules, an electrolytic mediator based on redox couple species, and a TCO-based counter electrode consisting of catalyst materials. The development of intrinsic and functional organic, inorganic, metal oxide, composite, and carbon-based materials has been intensively studied to enhance the efficiency of DSSCs. A simple and low-cost fabrication process that uses natural products is also considered essential for further large-scale production. In this article, we review the fabrication of various functional materials and their effects on DSSC performance.

scholarly journals ELECTROMAGNETIC SHIELDING ABILITY OF BALL-MILLED POROUS CARBON-REINFORCED COMMERCIAL PAINTS

2018 ◽  
Vol 54 (1A) ◽  
pp. 315
Author(s):  
Pham Binh Minh
Keyword(s):  
Porous Carbon ◽  
Carbon Material ◽  
Large Scale ◽  
Carbon Materials ◽  
Low Cost ◽  
Synthesis Method ◽  
Electromagnetic Shielding ◽  
Layer Graphene ◽  
Graphene Flakes ◽  
Large Scale Synthesis

Carbon materials have been attracting intensive attention especially after the discoveries of fullerenes in 1985 and graphene in 2004. Our aim is to develop an efficient, low-cost and large-scale synthesis method of a carbon material called porous carbon, which is a collection of nanoscale mono- and multi-layer graphene flakes. This work presents the method of producing porous carbon and the capability of electromagnetic shielding of a typical commercial paint reinforced by the fabricated carbon material.

Creating Successful Portals with a Design Framework

2009 ◽  
Vol 1 (4) ◽  
pp. 63-75 ◽  
Author(s):  
Joe Lamantia
Keyword(s):  
Building Block ◽  
Large Scale ◽  
Building Blocks ◽  
Design Principles ◽  
Design Framework ◽  
Block System ◽  
Business Information ◽  
Social Settings ◽  
The Creation ◽  
Over Time

Portal designers and managers face the difficulties of creating effective information architectures for portals, dashboards, and tile-based platforms for delivering business information and functionality using only flat portlets. This article introduces the idea of a system of standardized building blocks that can simplifies portal design and management, and effectively support growth in content, functionality, and users over time. In enterprise and other large scale social settings, using standardized components allows for the creation of a library of tiles that can be shared across communities of users. It then outlines the design principles underlying the building block system, and the simple guidelines for combining blocks together to create any type of tile-based environment.

Creating Successful Portals with a Design Framework

2011 ◽  
pp. 246-256
Author(s):  
Joe Lamantia
Keyword(s):  
Building Block ◽  
Large Scale ◽  
Building Blocks ◽  
Design Principles ◽  
Design Framework ◽  
Block System ◽  
Social Settings ◽  
The Creation ◽  
Over Time

Portal practitioners face the difficulties of creating effective information architectures for portals, dashboards, and tile-based information environments using only flat portlets. This article introduces the idea of a system of standardized building blocks that can effectively support growth in content, functionality, and users over time. In enterprise and other large scale social settings, using standardized components allows for the creation of a library of tiles that can be shared across communities of users. It then outlines the design principles underlying the building block system, and the simple guidelines for combining blocks together to create any type of tile-based environment.

scholarly journals Synthesis and Characterization of Cockle Shell-Based Calcium Carbonate Aragonite Polymorph Nanoparticles with Surface Functionalization

2017 ◽  
Vol 2017 ◽  
pp. 1-12 ◽  
Author(s):  
Syairah Liyana Mohd Abd Ghafar ◽  
Mohd Zobir Hussein ◽  
Zuki Abu Bakar Zakaria
Keyword(s):  
Electron Microscopy ◽  
Calcium Carbonate ◽  
Surface Functionalization ◽  
Large Scale ◽  
Low Cost ◽  
Synthesis Method ◽  
Industrial Applications ◽  
Raw Material ◽  
Material Source ◽  
Cockle Shell

The development of cockle shell-based calcium carbonate aragonite polymorph nanoparticle synthesis method using the technique of mechanical stirring in the presence of dodecyl dimethyl betaine (BS-12) incorporated with surface functionalization demonstrated high homogeneity of sample product with good nanoparticles dispersion. The cockle shell-based calcium carbonate aragonite nanoparticle with functionalized surface was characterized using transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM), particle size distribution, pH measurement analysis, Fourier Transform Infrared (FTIR) spectroscopy, and X-ray diffraction (XRD). Surface functionalization was proven to improve the overall size and shape of the nanoparticles and enhance their dispersion properties, preventing coarse agglomeration among nanoparticles in general. The improved method was verified to retain its aragonite crystalline nature. Additionally, surface functionalization did not increase the size of nanoparticles throughout the modification process. This facile preparation using naturally occurring cockle shells as the main source is environmentally friendly because it provides relatively low cost of raw material source as it is abundantly available in nature and has good mineral purity content. Hence, high quality production of surface functionalized cockle shell-based calcium carbonate aragonite polymorph nanoparticles can potentially be exploited and produced on a large scale for various industrial applications, especially for biomedical purposes in the near future.

Polydopamine-Based Surface Modification of Chlorella Microspheres for Multiple Environmental Applications

2021 ◽  
Vol 21 (5) ◽  
pp. 3065-3071
Author(s):  
Sihao Pan ◽  
Guanhua Huang ◽  
Hui Ding ◽  
Ke Wang ◽  
Hong Wang
Keyword(s):  
Water Pollution ◽  
Heavy Metal ◽  
Surface Modification ◽  
Large Scale ◽  
Low Cost ◽  
Functional Materials ◽  
Scale Production ◽  
Oil Removal ◽  
Directional Motion ◽  
Enhanced Adsorption

Towards addressing water pollution issues, the development of multifunctional chlorella with applications ranging from sensing pollutants to heavy metal and oil removal is described. The use of chlorella cells, which are widely abundant natural structures, leads to simple and low-cost mass production of effective functional materials. Bioinspired surface modification approaches mediated by polydopamine can endow chlorella with enhanced adsorption capacity for heavy metals, as well as superhydrophobic, fluorescence and magnetic properties according to the desired application. The resulting chlorella exhibits excellent heavy metal and oil removal ability, while magnetic propulsion and guidance allow directional motion over long distances for implementation in situ removal. Moreover, it is further demonstrated that chlorella can be used as a biosensor to detect metal ions by taking advantage of the fluorescence properties of carbon dots. Such use of chlorella provides a new way for the large-scale production of functional materials to tackle water pollution.

Creating Successful Portals with a Design Framework

2010 ◽  
pp. 167-178
Author(s):  
Joe Lamantia
Keyword(s):  
Building Block ◽  
Large Scale ◽  
Building Blocks ◽  
Design Principles ◽  
Design Framework ◽  
Block System ◽  
Business Information ◽  
Social Settings ◽  
The Creation ◽  
Over Time

Portal designers and managers face the difficulties of creating effective information architectures for portals, dashboards, and tile-based platforms for delivering business information and functionality using only flat portlets. This article introduces the idea of a system of standardized building blocks that can simplifies portal design and management, and effectively support growth in content, functionality, and users over time. In enterprise and other large scale social settings, using standardized components allows for the creation of a library of tiles that can be shared across communities of users. It then outlines the design principles underlying the building block system, and the simple guidelines for combining blocks together to create any type of tile-based environment.

Hierarchical Design of Metal Oxide Multi-Dimensional Arrays from Solutions

2005 ◽  
Vol 901 ◽  
Author(s):  
Lionel Vayssieres
Keyword(s):  
Thin Film ◽  
Metal Oxide ◽  
Large Scale ◽  
Film Growth ◽  
Functional Materials ◽  
Building Blocks ◽  
Oxide Semiconductor ◽  
Hierarchical Design ◽  
Quantum Rods ◽  
Aspect Ratios

AbstractThe hierarchical design of well-defined and highly oriented two- and three-dimensional arrays of conventional semiconductor nanomaterials and their large scale manufacturing at low cost remain a crucial challenge to unfold the very promising future of nanodevices. In addition to economical manufacturing of nanostructured semiconductors, better fundamental knowledge of their electronic structure, physical, interfacial and structural properties and stability, is required to fully exploit their fascinating potentials. To combine such essential requirements, the predictive creation of structurally well-defined and well-ordered functional and multi-functional materials is essential. As an attempt to achieve such ambitious goals, a novel strategy to thin film metal oxide semiconductor nanotechnology processing has been developed and investigated. A thermodynamic growth control concept based on the chemical and electrostatic minimization of the surface energy as well as a thin film growth technique have been developed. Such original approach allows the generation of nanomaterials with novel and functional morphologies. Advanced metal oxide nanostructures consisting of oriented multi-dimensional arrays featuring building blocks of controlled morphologies, sizes, aspect ratios and orientations at nano-, meso-, and microscale are genuinely fabricated directly onto various substrates of large physical areas without template, surfactant, undercoating or applied field from the hydrolysis-condensation of aqueous metal salts solutions at mild temperatures (below 100°C). A survey of the innovative advances in the fabrication of highly oriented and functional nanostructure arrays of transition and post-transition metal oxides are presented as well as one-dimensional confinement effects in purpose-built bundled iron oxide quantum rods.

scholarly journals Anti-Perovskites for Solid-State Batteries: Recent Developments, Current Challenges and Future Prospects

2021 ◽  
Author(s):  
James Dawson ◽  
Theodosios Famprikis ◽  
Karen E Johnston
Keyword(s):  
Solid State ◽  
High Performance ◽  
Large Scale ◽  
Low Cost ◽  
Next Generation ◽  
Future Prospects ◽  
Recent Developments ◽  
Solid State Batteries ◽  
The Creation

Current commercial batteries cannot meet the requirements of next-generation technologies, meaning that the creation of new high-performance batteries at low cost is essential for the electrification of transport and large-scale...

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