A kind of rare earth element nd-doped bi2wo6 composite photocatalyst and its preparation method and application
A rare earth element, composite light technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc. Inhomogeneous, long reaction time and other problems, to achieve the effect of short preparation cycle, short synthesis time and fast reaction speed
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Embodiment 1
[0030] Rare earth element Nd doped Bi 2 WO 6 The preparation method of composite photocatalyst comprises the following steps:
[0031] Step 1: Weigh Bi(NO 3 ) 3 ·5H 2 O and Na 2 WO 4 2H 2 O was placed in a beaker, and deionized water was added to the beaker to prepare a mixed solution, in which Bi(NO 3 ) 3 ·5H 2 The concentration of O is 0.2mol / L, Na 2 WO 4 2H 2 The concentration of O is 0.1mol / L, and the mixed solution is magnetically stirred for 40 minutes to mix the raw materials therein evenly;
[0032] Step 2: Weigh a certain amount of Nd(NO 3 ) 3 ·6H 2 O is added to the mixed solution to obtain a reaction solution, wherein the amount of Nd added is R Nd =6% (R Nd =n Nd / (n Bi +n Nd )×100%, n Bi and n Nd are the molar amounts of Bi and Nd respectively), the reaction solution was magnetically stirred at room temperature for 40min to obtain the precursor solution;
[0033] Step 3: Move the precursor liquid into the microwave hydrothermal reactor lined...
Embodiment 2
[0037] Rare earth element Nd doped Bi 2 WO 6 The preparation method of composite photocatalyst comprises the following steps:
[0038] Step 1: Weigh Bi(NO 3 ) 3 ·5H 2 O and Na 2 WO 4 2H 2 O is put into a beaker, and then 60ml of deionized water is added to the beaker to prepare a mixed solution, wherein Bi(NO 3 ) 3 ·5H 2 The concentration of O is 0.1mol / L, Na 2 WO 4 2H 2 The concentration of O is 0.05mol / L, and the mixed solution is magnetically stirred for 40 minutes to mix the raw materials therein evenly;
[0039] Step 2: Weigh a certain amount of Nd(NO 3 ) 3 ·6H 2 O is added to the mixed solution to obtain a reaction solution, wherein the amount of Nd added is R Nd =10% (R Nd =n Nd / (n Bi +n Nd )×100%, n Bi and n Nd are the molar amounts of Bi and Nd respectively), the reaction solution was magnetically stirred at room temperature for 40min to obtain the precursor solution;
[0040] Step 3: Move the precursor liquid into the microwave hydrothermal re...
Embodiment 3
[0047] Rare earth element Nd doped Bi 2 WO 6 The preparation method of composite photocatalyst comprises the following steps:
[0048] Step 1: Weigh Bi(NO 3 ) 3 ·5H 2 O and Na 2 WO 4 2H 2 O was placed in a beaker, and deionized water was added to the beaker to prepare a mixed solution, in which Bi(NO 3 ) 3 ·5H 2 The concentration of O is 0.6mol / L, Na 2 WO 4 2H 2 The concentration of O is 0.3mol / L, and the mixed solution is magnetically stirred for 40 minutes to mix the raw materials therein evenly;
[0049] Step 2: Weigh a certain amount of Nd(NO 3 ) 3 ·6H 2 O is added to the mixed solution to obtain a reaction solution, wherein the amount of Nd added is R Nd =15% (R Nd =n Nd / (n Bi +n Nd )×100%, n Bi and n Nd are the molar amounts of Bi and Nd respectively), the reaction solution was magnetically stirred at room temperature for 20min to obtain the precursor solution;
[0050] Step 3: Move the precursor liquid into the microwave hydrothermal reactor line...
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