A carbon film-coated α-iron oxide nanorod array and its preparation method and application
A technology of iron oxide nano- and nano-rod arrays, which is applied in the field of nanotechnology and new energy materials, can solve problems such as hindering charge transport and failing to achieve passivation effects, and achieve excellent photoelectric performance
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Embodiment 1
[0044] This embodiment provides a method for preparing a carbon film-coated α-iron oxide nanorod array, the method comprising the following steps:
[0045] (1) Immerse the FTO conductive glass into FeCl 3 Concentration 0.15mol / L with NaNO 3 In an aqueous solution with a concentration of 1mol / L, heat at 95°C for 4 hours under sealed conditions to obtain β-FeOOH nanorod arrays;
[0046] (2) Calcining the β-FeOOH nanorod array obtained in step (1) at 800° C. for 20 minutes to obtain an α-iron oxide nanorod array;
[0047] (3) Immerse the α-iron oxide nanorod array obtained in step (2) into a mixed solution with a glucose concentration of 0.02 mol / L and a KOH concentration of 0.1 mol / L, and heat at 180°C for 2 hours under sealed conditions to obtain carbon film-coated α - Iron oxide nanorod arrays.
[0048] SEM test was carried out on the carbon film-coated α-iron oxide nanorod array prepared in this example, and its SEM image is as follows figure 2 shown.
Embodiment 2
[0050] This embodiment provides a method for preparing a carbon film-coated α-iron oxide nanorod array, the method comprising the following steps:
[0051] (1) Immerse the FTO conductive glass into FeCl 3 Concentration 0.15mol / L with NaNO 3 In an aqueous solution with a concentration of 1mol / L, heat at 95°C for 4 hours under sealed conditions to obtain β-FeOOH nanorod arrays;
[0052] (2) Calcining the β-FeOOH nanorod array obtained in step (1) at 800° C. for 20 minutes to obtain an α-iron oxide nanorod array;
[0053] (3) Immerse the α-iron oxide nanorod array obtained in step (2) into a mixed solution with a glucose concentration of 0.02 mol / L and a KOH concentration of 0.2 mol / L, and heat at 180°C for 2 hours under sealed conditions to obtain carbon film-coated α - Iron oxide nanorod arrays.
Embodiment 3
[0055] This embodiment provides a method for preparing a carbon film-coated α-iron oxide nanorod array, the method comprising the following steps:
[0056] (1) Immerse the FTO conductive glass into FeCl 3 Concentration 0.15mol / L with NaNO 3 In an aqueous solution with a concentration of 1mol / L, heat at 95°C for 4 hours under sealed conditions to obtain β-FeOOH nanorod arrays;
[0057] (2) Calcining the β-FeOOH nanorod array obtained in step (1) at 800° C. for 20 minutes to obtain an α-iron oxide nanorod array;
[0058] (3) Immerse the α-iron oxide nanorod array obtained in step (2) into a mixed solution with a glucose concentration of 0.03 mol / L and a KOH concentration of 0.1 mol / L, and heat at 180°C for 2 hours under sealed conditions to obtain carbon film-coated α - Iron oxide nanorod arrays.
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Abstract
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