Preparation method and application of gilded nano sheet material with excellent photoelectric properties
A nano-sheet-like technology with optoelectronic properties, applied in chemical instruments and methods, inorganic chemistry, bismuth compounds, etc., can solve the problem of low photoresponsivity, and achieve the effects of simple preparation conditions, high repeatability, and excellent photoelectric response characteristics.
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Embodiment 1
[0019] Gilt Bi with excellent optoelectronic properties 9 o 7.5 S 6 The preparation steps of nano sheet material are as follows:
[0020] In a typical synthesis method, 0.025 mmol bismuth chloride (BiCl 3 ), 0.690mmol polyvinylpyrrolidone (PVP) and 0.386mmol thiourea (CH 4 N 2 S) was dissolved in 7 mL of ethylene glycol (EG), and then 778 μL of aqueous NaOH (1M) was added to the above mixture for pH adjustment (pH=13). Finally, the precursor solution was transferred into a Teflon-lined stainless steel autoclave (10% filling degree) and kept at 150 °C for 3 h. After the autoclave was naturally cooled to room temperature, the product was centrifuged and washed three times with a mixture of acetone and water (1:1), and then the sample was freeze-dried for 24 h. Finally, get Bi 9 o 7.5 S 6 nanosheet material. 2 μL Bi 9 o 7.5 S 6 The solution was dropped on the cleaned silicon wafer, dried naturally, and then used JEOL JSM-7600F field emission scanning electron microsc...
Embodiment 2
[0032] Example 2 is substantially the same as Example 1, except that in a typical synthesis method, 0.05 mmol bismuth chloride (BiCl 3 ), 1.38mmol polyvinylpyrrolidone (PVP) and 0.77mmol thiourea (CH 4 N 2 S) was dissolved in 14 mL of ethylene glycol (EG), and then 778 μL of NaOH (1 M) aqueous solution was added to the above mixture for pH adjustment (pH=13). Finally, the precursor solution was transferred into a Teflon-lined stainless steel autoclave (50% filling degree) and kept at 150 °C for 3 h. After the autoclave was naturally cooled to room temperature, the product was centrifuged and washed three times with a mixture of acetone and water (1:1), and then the sample was freeze-dried for 24 h. Finally, get Bi 9 o 7.5 S 6 nanosheet material.
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