Modified BiFeO3 thin film photoelectrode adopting cobaltous phosphate promoter and preparation method thereof
A cocatalyst and cobalt phosphate technology, which is applied in the field of cobalt phosphate modified BiFeO3 thin film photoelectrode and its preparation, can solve the problems of poor photogenerated carrier mobility and high carrier recombination rate, and achieve a simple and easy preparation method, The effect of promoting application and facilitating the regulation of photoelectrochemical properties
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[0017] Example 1:
[0018] Weigh 6mmol of bismuth nitrate pentahydrate and dissolve in 20ml of ethylene glycol, add 10ml of glacial acetic acid for dehydration after sonication for 10 minutes and continue sonication for 10 minutes, then add 6mmol of ferric nitrate nonahydrate, sonicate for 10 minutes, and finally add 1.0 to the solution g of P123 was used as a template, sonicated for 30 minutes and then aged at room temperature for 24 hours to obtain the precursor sol for preparing the BFO thin film photoelectrode in the next step; the precursor sol prepared above was passed through a homogenizer at 1500r / min. Spin coating on the cleaned FTO conductive glass surface, the spin coating time is 40s, and then dried on a 150 degree hot stage, and then the dried sample is calcined in a muffle furnace at 550 degrees, the calcination time is 30 minutes. After being naturally cooled to room temperature, the BFO film can be prepared; the BFO film prepared above is immersed in a potassium d...
Example Embodiment
[0020] Example 2:
[0021] Weigh 5mmol of bismuth nitrate pentahydrate and dissolve in 15ml of ethylene glycol, add 10ml of glacial acetic acid for dehydration after sonication for 10 minutes and continue sonication for 10 minutes, then add 5mmol of ferric nitrate nonahydrate, sonicate for 10 minutes, and finally add 0.8 to the solution g of P123 was used as a template, sonicated for 30 minutes and then aged at room temperature for 24 hours to obtain the precursor sol for preparing the BFO thin film photoelectrode in the next step; the precursor sol prepared above was passed through a homogenizer at 1500r / min. Spin coating on the cleaned FTO conductive glass surface, the spin coating time is 40s, and then dried on a 150 degree hot stage, and then the dried sample is calcined in a muffle furnace at 550 degrees, the calcination time is 30 minutes. After being naturally cooled to room temperature, the BFO film can be prepared; the BFO film prepared above is immersed in a potassium d...
Example Embodiment
[0022] Example 3:
[0023] Weigh 10mmol of bismuth nitrate pentahydrate in 30ml of ethylene glycol, add 10ml of glacial acetic acid for dehydration after sonication for 10 minutes and continue ultrasonication for 10 minutes, then add 10mmol of ferric nitrate nonahydrate, sonicate for 10 minutes, and finally add 1.5 to the solution g of P123 was used as a template, sonicated for 30 minutes and then aged at room temperature for 24 hours to obtain the precursor sol for preparing the BFO thin film photoelectrode in the next step; the precursor sol prepared above was passed through a homogenizer at 1500r / min. Spin coating on the cleaned FTO conductive glass surface, the spin coating time is 40s, and then dried on a 150 degree hot stage, and then the dried sample is calcined in a muffle furnace at 550 degrees, the calcination time is 30 minutes. After being naturally cooled to room temperature, the BFO film can be prepared; the BFO film prepared above is immersed in a potassium dihydro...
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