Heterojunction nano material and preparation and application thereof
A nanomaterial and heterojunction technology, applied in nanotechnology, nanotechnology, nanomedicine, etc., can solve problems that are rarely reported, and achieve the effects of low toxicity, wide application prospects, and good cancer treatment effect
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Embodiment 1
[0032] a CoFe 2 o 4 - The preparation of yCoO heterojunction nanomaterials, the steps are as follows:
[0033] 1) Co(NO 3 ) 2 ·6H 2 O(0.003mol), Fe(NO 3 ) 3 9H 2 Solution A was prepared by dissolving O (0.001 mol) in 30 mL of deionized water.
[0034] 2) Na 2 CO 3 (0.002mol), NaOH (0.35g) were dissolved in 30mL of deionized water to obtain solution B.
[0035] 3) Slowly add the solution B prepared in step 2) to the solution A prepared in step 1), keep the pH of the solution = 8, mechanically stir the reaction at 80° C. for 24 hours, and centrifuge at 8000 rpm to obtain CoFe-LDH nanosheets.
[0036] 4) Put the CoFe-LDH nanosheets prepared in step 3) into a tube furnace, and calcine them at 500°C for 2 hours in a nitrogen atmosphere to obtain heterojunction nanomaterials, dissolve them in an acidic solution, and perform inductively coupled plasma Emission spectrometer measures the content of Co element and Fe element, as table 1, obtains CoFe 2 o 4The ratio to CoO i...
Embodiment 2
[0041] a CoFe 2 o 4 - The preparation of yCoO heterojunction nanomaterials, the steps are as follows:
[0042] 1) Co(NO 3 ) 2 ·6H 2 O(0.002mol), Fe(NO 3 ) 3 9H 2 Solution A was prepared by dissolving O (0.001 mol) in 30 mL of deionized water.
[0043] 2) Na 2 CO 3 (0.002mol), NaOH (0.35g) were dissolved in 30mL of deionized water to obtain solution B.
[0044] 3) Slowly add the solution B prepared in step 2) to the solution A prepared in step 1), keep the pH of the solution = 8, mechanically stir the reaction at 80° C. for 12 hours, and centrifuge at 8000 rpm to obtain CoFe-LDH nanosheets.
[0045] 4) Put the CoFe-LDH nanosheets prepared in step 3) into a tube furnace, and calcine them at 500°C for 2 hours in a nitrogen atmosphere to obtain heterojunction nanomaterials, dissolve them in an acidic solution, and perform inductively coupled plasma Emission spectrometer measures the content of Co element and Fe element, as table 1, obtains CoFe 2 o 4 The ratio to CoO ...
Embodiment 3
[0048] a CoFe 2 o 4 - The preparation of yCoO heterojunction nanomaterials, the steps are as follows:
[0049] 1) Co(NO 3 ) 2 ·6H 2 O(0.003mol), Fe(NO 3 ) 3 9H 2 Solution A was prepared by dissolving O (0.001 mol) in 30 mL of deionized water.
[0050] 2) Na 2 CO 3 (0.002mol), NaOH (0.35g) were dissolved in 30mL of deionized water to obtain solution B.
[0051] 3) Slowly add the solution B prepared in step 2) to the solution A prepared in step 1), keep the pH of the solution = 8, mechanically stir the reaction at 80° C. for 12 hours, and centrifuge at 8000 rpm to obtain CoFe-LDH nanosheets.
[0052] 4) Put the CoFe-LDH nanosheets prepared in step 3) into a tube furnace, and calcine them at 400°C for 2 hours in a nitrogen atmosphere to obtain heterojunction nanomaterials, dissolve them in an acidic solution, and perform inductively coupled plasma The content of Co element and Fe element is measured by emission spectrometer to obtain CoFe 2 o 4 The ratio to CoO is ab...
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