Anionic Element Reagent Complexes for Scalable Nanoparticle Synthesis
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Solution Overview
Problem
Current methods for synthesizing cross-type elemental nanoparticles, which consist of multiple element types such as metals, metalloids, and non-metals, are often complex, expensive, and not scalable, particularly when using high-temperature gas phase reactions, limiting the development of robust and scalable wet chemistry synthesis techniques.
Innovation Solution
The development of Anionic Element Reagent Complexes (AERCs) involving a hydride molecule and multiple elements in oxidation state zero, where the reagents are formed through ball-milling a mixture of element powders and a hydride molecule, enabling the synthesis of stable and high-purity nanoparticles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If high-temperature gas phase reactions are used to synthesize cross-type elemental nanoparticles, then nanoparticle synthesis can be achieved, but the process becomes complex, expensive, and not scalable
Solution Approach 1:
The invention changes the synthesis parameters from high-temperature gas phase conditions to ambient temperature wet chemistry conditions. The AERC reagents enable nanoparticle synthesis at room temperature through simple wet chemistry procedures, eliminating the need for complex high-temperature equipment and making the process scalable.
Solution Approach 2:
The invention introduces AERC reagents as intermediary compounds that facilitate nanoparticle synthesis. These reagents contain elements in oxidation state zero complexed with hydride molecules, serving as stable intermediates that can be easily handled and processed through simple wet chemistry procedures, bridging the gap between elemental powders and final nanoparticles.
2Reliability
If conventional methods are used for synthesizing cross-type elemental nanoparticles, then some nanoparticles can be produced, but the methods are not well developed and lack robustness
Solution Approach 1:
The AERC reagent platform provides universal applicability for synthesizing various cross-type elemental nanoparticles. The same general methodology using AERC reagents can produce different nanoparticle compositions (metal/metalloid, metal/non-metal, metalloid/non-metal, and multi-element combinations) through simple variation of starting elements, making the method both robust and highly versatile.
Solution Approach 2:
The invention segments the synthesis process into distinct stages: (1) preparation of AERC reagents from elemental powders and hydride molecules, (2) stabilization of elements in oxidation state zero within the reagent complex, and (3) controlled conversion to nanoparticles. This segmentation allows each stage to be optimized independently, improving overall reliability while maintaining flexibility for different nanoparticle types.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows for the efficient and scalable production of cross-type elemental nanoparticles, as demonstrated by the formation of complexes like CuSe(LiBH4)4, Ni0.4Ge0.6(LiBH4)2, and Cd0.45Se0.45B0.1(LiBH4)2, showcasing the stability and ease of production of these complexes under ambient conditions.
Implementation Method 1
ball-milling a mixture that includes: (i) powders of at least two bulk elements, and (ii) a hydride molecule
Data Source
AI summary
Reagent complexes have two or more elements, formally in oxidation state zero, complexed with a hydride molecule. Complexation with the hydride molecule may be evidenced by shifts to lower binding energies, of one or more electrons in each of the two or more elements, as observed by x-ray photoelectron spectroscopy. The reagents can be useful for the synthesis of multi-element nanoparticles. Preparation of the reagents can be achieved by ball-milling a mixture that includes powders of two or more elements and a hydride molecule.