A self-assembled 3D hollow of polycrystalline nanoribbons vs. 4 Microsphere and its preparation method and application
A three-dimensional hollow, nano-belt technology, applied in chemical instruments and methods, structural parts, inorganic chemistry, etc., can solve the problems of poor electrochemical performance, limited application, easy pulverization, etc., achieve low synthesis temperature, no post-processing, low cost effect
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Embodiment 1
[0037] Step 1: Add 1g of sodium metavanadate and 3.6g of thioacetamide to 60ml of deionized water at the same time, and stir magnetically at 500r / min at room temperature to obtain a semi-clear solution A;
[0038] Step 2: Prepare 3mol / L sodium hydroxide solution B with deionized water, and add it dropwise to solution A under continuous magnetic stirring, that is, after adding 1 drop of sodium hydroxide solution B, stir until the pH of the solution reaches Stabilize, and repeat this until the pH of the solution is adjusted to 10.2 to obtain solution C;
[0039] Step 3: Pour solution C into the reaction liner at a filling ratio of 60% and seal it, then install the liner in an outer kettle and fix it in a homogeneous reactor, and then at a speed of 10r / min, React at 100°C for 18 hours;
[0040]Step 4: After the hydrothermal reaction is completed, the reaction kettle is naturally cooled to room temperature, and then the product cooled after the reaction is taken out, washed alter...
Embodiment 2
[0048] Step 1: Add 1.1g of sodium metavanadate and 3.7g of thioacetamide into 58ml of deionized water at the same time, and magnetically stir at 400r / min at room temperature to obtain a semi-clear solution A;
[0049] Step 2: Prepare 2.8mol / L sodium hydroxide solution B with deionized water, and add it dropwise to solution A under continuous magnetic stirring, that is, after adding 1 drop of sodium hydroxide solution B, stir until the pH of the solution Stability is achieved, and this is repeated until the pH of the solution is adjusted to 10.1, and solution C is obtained;
[0050] Step 3: Pour solution C into the reaction liner at a filling ratio of 58% and seal it, then install the liner in an outer kettle and fix it in a homogeneous reactor, and then under the condition of a rotating speed of 5r / min, React at 95°C for 18.5h;
[0051] Step 4: After the hydrothermal reaction is completed, the reaction kettle is naturally cooled to room temperature, and then the product coole...
Embodiment 3
[0054] Step 1: Add 0.9g of sodium metavanadate and 3.5g of thioacetamide to 62ml of deionized water at the same time, and magnetically stir at 600r / min at room temperature to obtain a semi-clear solution A;
[0055] Step 2: Prepare 3.2mol / L sodium hydroxide solution B with deionized water, and add it dropwise to solution A under continuous magnetic stirring, that is, after adding 1 drop of sodium hydroxide solution B, stir until the pH of the solution Stability is achieved, and this is repeated until the pH of the solution is adjusted to 10.3, and solution C is obtained;
[0056] Step 3: Pour solution C into the reaction liner at a filling ratio of 61% and seal it, then install the liner in an outer kettle and fix it in a homogeneous reactor, and then under the condition of a rotating speed of 8r / min, React at 105°C for 17.5h;
[0057] Step 4: After the hydrothermal reaction is completed, the reaction kettle is naturally cooled to room temperature, and then the product cooled...
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