Preparation method of methylamine lead iodine-reduced graphene oxide composite photocatalytic material and application in photocatalytic hydrogen production by using the photocatalytic material
A technology of composite photocatalysis and photocatalysis, which is applied in the direction of organic compound/hydride/coordination complex catalyst, physical/chemical process catalyst, hydrogen production, etc. Difficult construction and other issues, to achieve the effect of broad commercial application prospects, simple synthesis conditions and methods, and low energy consumption
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Embodiment 1
[0042] Example 1: CH 3 NH 3 PB 3 Preparation of -rGO composite photocatalytic material
[0043] Specific steps are as follows:
[0044] (1) Measure 100mL of hydroiodic acid with a graduated cylinder in a 200mL beaker, add 20g of lead iodide (PbI 2 ) and keep stirring until PbI 2 After complete dissolution, slowly add 7g methylamine iodide (CH 3 NH 3 1), stirring for 1h; heating, stirring and evaporating to dryness at 50°C to obtain CH 3 NH 3 PB 3 powder.
[0045] (2) Take 50mL of hydroiodic acid solution in a 100mL beaker, add 20g of CH obtained in step (1) 3 NH 3 PB 3 Powder, stirred for 0.5h, ultrasonicated for 10min to disperse evenly, and centrifuged to obtain saturated CH 3 NH 3 PB 3 solution.
[0046] (3) Take the saturated solution obtained in step (2) in a 100mL beaker, add 100mgCH 3 NH 3 PB 3 Powder and 5mgGO were ultrasonically dispersed for 10min to disperse evenly; then the mixture was transferred to a reactor equipped with a quartz cover and sti...
Embodiment 2
[0048] Example 2: CH with different rGO loads 3 NH 3 PB 3 Preparation of -rGO composite photocatalytic material
[0049] CH with different rGO composite ratios (mass fraction 1%, 5%, 10%) 3 NH 3 PB 3 - The preparation method of rGO is the same as that in Example 1, except that the amount of GO added to the saturated solution for photoreaction is 2 mg, 5 mg, and 10 mg, respectively.
[0050] The CH prepared by the above preparation method 3 NH 3 PbI and CH 3 NH 3 PB 3 The X-ray diffraction pattern of -rGO is shown in figure 1 , it can be seen from the figure that the CH prepared by this method 3 NH 3 PB 3 It is a tetragonal phase structure, and the introduction of rGO did not cause the formation of heterogeneous phases and structural defects.
[0051] Photos of the original saturated solution and the solution before and after the reaction are as follows figure 2 As shown, the occurrence of GO photoreduction can be intuitively seen from the color change.
[0052...
Embodiment 3
[0057] Example 3: Photocatalytic hydrogen production performance test
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