Titanic Acid Hierarchical Structure With Controllable Particle Size
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Solution Overview
Problem
Current methods fail to effectively regulate the particle size and hierarchical structure of titanic acid salts, titanic acid, and titanium oxide, limiting their application in multifunctional nanoscale devices.
Innovation Solution
A process involving the use of polyvinyl alcohol in the reaction system to control the morphology and particle size of titanic acid salts, titanic acid, and titanium oxide, achieving a hierarchical structure with controllable particle size through hydrolysis and solvothermal reactions, and subsequent surface modification for enhanced conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional hydrothermal methods are used to prepare titanic acid salt, titanic acid, and titanium oxide, then the materials can be synthesized, but the particle size and hierarchical structure cannot be effectively regulated
Solution Approach 1:
The patent applies parameter changes by systematically varying reaction conditions including temperature (100-200°C), time (1-24 hours), pH values, and molar ratios of reactants to achieve precise control over particle size and hierarchical structure of the titanic acid salt, titanic acid, and titanium oxide materials
Solution Approach 2:
The patent introduces organic additives and surfactants as intermediaries during the hydrothermal process to mediate the formation and growth of nanowires and nanotubes, enabling effective regulation of particle size and hierarchical structure that cannot be achieved with conventional methods alone
2Reliability
If hierarchical structure is introduced to increase specific surface area and enhance electron migration, then material performance is improved, but the ability to regulate particle size of nanowires and nanotubes is lost
Solution Approach 1:
The patent uses parameter changes including temperature, time, pH, and additive concentrations to simultaneously achieve hierarchical structure formation and precise particle size control of the constituent nanowires and nanotubes within the hierarchical material
Solution Approach 2:
The patent employs a feedback mechanism where the effects of different reaction parameters on the hierarchical structure formation are systematically studied and adjusted to achieve the desired particle size and morphology, allowing iterative optimization of both hierarchical structure and particle size
3Reliability
If one-dimensional nanotube structure is formed to increase specific surface area and active sites, then photocatalytic efficiency is improved, but the control over particle size and morphology becomes difficult
Solution Approach 1:
The patent uses organic additives and surfactants as intermediaries to control the self-assembly and growth of one-dimensional nanotube structures during hydrothermal treatment, enabling simultaneous achievement of high photocatalytic efficiency through increased surface area and precise morphology control
Solution Approach 2:
The patent applies parameter changes in temperature, time, pH, and additive concentrations to control the formation and growth of nanotubes, achieving both the desired one-dimensional structure for high photocatalytic efficiency and precise control over particle size and morphology
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
The process enables the production of titanic acid salt and titanium oxide with precise particle size and structure, improving their performance in battery electrodes, photocatalysis, and other applications by enhancing charge-discharge performance and photocatalytic efficiency.
Implementation Method 1
carrying out hydrolysis reaction on a titanium source to obtain hydrated titanium acid precipitates
Implementation Method 2
dispersing the hydrated titanium acid precipitates in an aqueous hydrogen peroxide solution containing strong base for hydrothermal reaction
Implementation Method 3
dispersing the hydrated titanium acid precipitates in an aqueous hydrogen peroxide solution
Data Source
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AI summary
The present invention provides a process for preparing a titanic acid salt, titanic acid, and titanium oxide having a controllable particle size and a hierarchical structure, wherein the process comprises the steps of: preparing a titanium-containing peroxo-complex solution; adding a basic metal compound to the titanium-containing peroxo-complex solution to form a mixture solution; adding one of polyvinyl alcohol, hydroxypropyl methyl cellulose, and polyethylene glycol to the mixture solution to form a precursor dispersion; and subjecting the precursor dispersion to a solvothermal reaction to obtain the titanic acid salt having a hierarchical structure. The process for preparing a titanic acid salt, titanic acid, and titanium oxide having a controllable particle size and a hierarchical structure provided by the present invention, can not only realize the regulation of morphology and particle diameter of constituent units in the hierarchical structure, but also can achieve the regulation of particle size in the hierarchical structure.