Rare earth element Nd-doped Bi2WO6 composite photocatalyst, preparation method therefor and applications thereof
A technology of rare earth elements and complex light, which is applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems affecting the properties of synthetic powders, particle size, and heat distribution. Inhomogeneity, slow heating rate and other problems, to achieve the effect of short preparation cycle, short synthesis time and fast reaction speed
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[0029] Example 1:
[0030] Rare earth element Nd doped Bi 2 WO 6 The preparation method of the composite photocatalyst includes the following steps:
[0031] Step 1: Weigh Bi(NO) according to the molar ratio of Bi:W=2:1 3 ) 3 ·5H 2 O and Na 2 WO 4 ·2H 2 O was put into a beaker, and then 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 40min to make the raw materials evenly mixed;
[0032] Step 2: Weigh a certain amount of Nd(NO 3 ) 3 ·6H 2 O is added to the mixed solution to obtain the reaction solution, where the amount of Nd added is R Nd =6% (R Nd =n Nd / (n Bi +n Nd )×100%, n Bi And n Nd Respectively the molar amount of Bi and Nd), the reaction solution was magnetically stirred at room temperature for 40min to obtain a precursor;
[0033] Step 3: Transfer the precursor liquid into a microwave hydro...
Example Embodiment
[0036] Example 2:
[0037] Rare earth element Nd doped Bi 2 WO 6 The preparation method of the composite photocatalyst includes the following steps:
[0038] Step 1: Weigh Bi(NO) according to the molar ratio of Bi:W=2:1 3 ) 3 ·5H 2 O and Na 2 WO 4 ·2H 2 O was put into the beaker, and then 60ml 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 0.1mol / L, Na 2 WO 4 ·2H 2 The concentration of O is 0.05mol / L, and the mixed solution is magnetically stirred for 40min to make the raw materials evenly mixed;
[0039] Step 2: Weigh a certain amount of Nd(NO 3 ) 3 ·6H 2 O is added to the mixed solution to obtain the reaction solution, where the amount of Nd added is R Nd =10% (R Nd =n Nd / (n Bi +n Nd )×100%, n Bi And n Nd Respectively the molar amount of Bi and Nd), the reaction solution was magnetically stirred at room temperature for 40min to obtain a precursor;
[0040] Step 3: Transfer the precursor liquid into a microw...
Example Embodiment
[0046] Example 3
[0047] Rare earth element Nd doped Bi 2 WO 6 The preparation method of the composite photocatalyst includes the following steps:
[0048] Step 1: Weigh Bi(NO) according to the molar ratio of Bi:W=2:1 3 ) 3 ·5H 2 O and Na 2 WO 4 ·2H 2 O was put into a beaker, and then 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 make the raw materials evenly mixed;
[0049] Step 2: Weigh a certain amount of Nd(NO 3 ) 3 ·6H 2 O is added to the mixed solution to obtain the reaction solution, where the amount of Nd added is R Nd =15% (R Nd =n Nd / (n Bi +n Nd )×100%, n Bi And n Nd Respectively the molar amount of Bi and Nd), the reaction solution was magnetically stirred at room temperature for 20min to obtain a precursor;
[0050] Step 3: Transfer the precursor liquid into a microwave ...
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