Keggin type heteropolyacid insoluble salt heterojunction catalyst as well as preparation method and application thereof
A heteropolyacid and heterojunction technology, which is applied in the field of Keggin type heteropolyacid insoluble salt heterojunction catalyst and its preparation field, can solve the problems of difficult formation of complexes, etc. Small effects of shunt loss or broken parts
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Embodiment 1
[0023] This embodiment provides a Cs 3 PW 12 o 40 @δ-Bi 2 o 3 The preparation method of heterojunction catalyst is as follows: 20mg Cs 3 PW 12 o 40 Powder, dispersed in 20mL ethylene glycol-water mixed solution (V 乙二醇 :V 水 =4:1). After ultrasonication for 15min, add 970mg Bi(NO 3 ) 3 ·5H 2 O, stirred at room temperature for 1 h. The above mixture was transferred to a closed reaction kettle, and stirred and heated at 150°C for 4h. The samples taken out were washed three times with ultrapure water and absolute ethanol, and dried at room temperature to obtain Cs 3 PW 12 o 40 @δ-Bi 2 o 3 heterojunction catalysts.
Embodiment 2
[0025] This embodiment provides a kind of [Ru(bpy) 3 ] 2.5 SiFe(OH 2 )W 11 o 39 @δ-Bi 2 o 3 The preparation method of heterojunction catalyst is as follows: 40mg[Ru(bpy) 3 ] 2.5 SiFe(OH 2 )W 11 o 39 Powder, dispersed in 20mL ethylene glycol-water mixed solution (V 乙二醇 :V 水 =3:1). After ultrasonication for 15min, add 490mg Bi(NO 3 ) 3 ·5H 2 O, stirred at room temperature for 1 h. The above mixture was transferred to a closed reaction kettle, and stirred and heated at 170° C. for 4 h. After the sample taken out was washed three times with ultrapure water and absolute ethanol, and dried at room temperature to obtain [Ru(bpy) 3 ] 2.5 SiFe(OH 2 )W 11 o 39 @δ-Bi 2 o 3 heterojunction catalysts.
Embodiment 3
[0027] This embodiment provides an Ag 4 SiMo 12 o 40 @δ-Bi 2 o 3 The preparation method of heterojunction catalyst is as follows: 250mg Ag 4 SiMo 12 o 40 Powder, dispersed in 20mL ethylene glycol. After ultrasonication for 15min, add 17.8mg Bi 2 (SO 4 ) 3 , stirred at room temperature for 1 h. The above mixture was transferred to a closed reaction kettle, and stirred and heated at 190°C for 4h. The samples taken out were washed three times with ultrapure water and absolute ethanol respectively, and dried at room temperature to obtain Ag 4 SiMo 12 o 40 @δ-Bi 2 o 3 heterojunction catalysts.
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