A method and device for preparing micro/nano structure materials
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A nanostructure and liquid technology, applied in the field of preparation of micro/nanostructures, can solve the problems of uneven size and morphology of products, complex devices, etc.
Active Publication Date: 2021-12-07
PEKING UNIV
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Problems solved by technology
This method often takes hours or even days, and in this process, surfactants and stabilizers are usually added, which brings many limitations to the further application of materials
The mechanical pulverization method faces the problem of inhomogeneous size and shape of the obtained product
However, methods such as chemical vapor deposition and evaporative distillation require more complicated devices.
It remains a great challenge to obtain inexpensive micro / nanostructures with clean surfaces and specific dimensions on a large scale
Method used
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Embodiment 1
[0103] use Figure 6 device shown.
[0104] Deionized water is selected as the bulk liquid, and it is preheated, that is, the solution substrate is heated to 30°C.
[0105] choose C 60 Chlorobenzene solution (its concentration is 1mg / mL), forms heterogeneous solution, and heterogeneous solution is added dropwise to bulk liquid interface, and solution has spreading tendency on substrate surface and carries out self-disintegration.
[0106] The liquid-liquid system is heated to 40-50°C, and 500 sccm of air is purged inward to change the ambient pressure of the system to obtain micro / nano-structured C 60 .
[0107] to get C 60 Perform atomic force microscopy, such as Figure 7 As shown in (a), crystalline particles having a dumbbell shape were obtained.
[0108] The same process applies to cooling the entire system.
Embodiment 2
[0110] Repeat the process of embodiment 1, difference is: what heterogeneous solution adopts is C 60 carbon tetrachloride solution, and without heat treatment of the liquid-liquid system, the micro / nano-structured C 60 .
[0111] to get C 60 Perform atomic force microscopy, such as Figure 7 As shown in (b), get C 60 Flaky single crystal structure.
Embodiment 3
[0113] Repeat the process of embodiment 1, difference is: what heterogeneous solution adopts is C 60 carbon tetrachloride solution, at a system temperature of 20°C, micro / nano-structured C 60 .
[0114] to get C 60 Perform atomic force microscopy, such as Figure 7 As shown in (c), get C 60 ring structure.
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Abstract
The invention discloses a method for preparing micro / nano structures and materials, as well as micro / nano structures and devices. In the method, by selecting a suitable bulk liquid and different heterogeneous solutions, when the heterogeneous solutions contact the bulk liquid, By regulating the behavior of the solution on the interface between the heterogeneous solution and the bulk liquid, the construction process of the micro-nano structure can be regulated. This method has good universality and can be widely used in the construction of various micro / nano structures. The process of the invention is simple, does not require complex devices, and has application prospects for large-scale and large-scale preparation of micro / nano structures.
Description
technical field [0001] The present invention relates to solution splitting behavior, in particular to a method and application for splitting solutions of different types and components on another interface, in particular, to a method and device for preparing micro / nano structures using solution splitting behavior. Background technique [0002] In today's society, the fields of energy, electronics and medical are developing rapidly. In the advancement of these technologies, the application of various functional micro / nanostructures has become inevitable. For example, in terms of energy catalysis and drug delivery in medical treatment, how to obtain high-quality micro / nanostructures with characteristic sizes and specific shapes concisely and efficiently has always been a key problem to be solved in its development. Micro-nano structures with uniform shape and structure, clean surface, and uniform size play a very significant role in the further development of these fields. ...
Claims
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Application Information
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