Rare earth metal complex, preparation method thereof and photocatalyst
A technology of rare earth metals and photocatalysts, applied in the field of photocatalysis, can solve the problems of limiting the catalytic activity of catalysts, and achieve the effects of excellent photocatalytic cracking water hydrogen production activity and stability, easy availability of raw materials, and simple synthesis methods
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0036] This embodiment provides rare earth metal complexes, figure 1 Shown is the synthesis reaction equation of the rare earth metal complex. Specifically, the synthesis method of the rare earth metal complex provided in this embodiment includes the following steps:
[0037] (1) Samarium chloride hexahydrate SmCl 3 ·6H 2 O (0.1824 g, 0.5 mmol), phenylphosphonic acid PPA (0.1186 g, 0.75 mmol) were dissolved in 7 mL of absolute ethanol, and the mixture was stirred at room temperature for 20 min until homogeneous.
[0038](2) The mixture was transferred to a 15 mL polytetrafluoroethylene-lined stainless steel autoclave, and the autoclave was placed in a muffle furnace. The reaction kettle was kept at a constant temperature of 180°C for 72h.
[0039] (3) after the reaction time finishes, take out the autoclave, naturally cool to room temperature, open the reactor, filter, wash with absolute ethanol, and dry in air to obtain a white sample (samarium phenylphosphonate complex), ...
Embodiment 2
[0045] This example provides the characterization of the rare earth metal complex in Example 1
[0046] Firstly, the morphology of MPPA (M=Sm, Y, Tb) was analyzed by scanning electron microscope (SEM). like figure 2 As shown, the morphologies of the complexes are all sheet-like, and the lengths of SmPPA, YPPA and TbPPA range from 1 μm to 6 μm, 0.5 μm to 3 μm and 0.5 μm to 2 μm, respectively, and the surface is smooth and uniformly distributed.
[0047] MPPA (M=Sm, Y, Tb) was determined by X-ray diffraction (XRD) ( image 3 ). It can be seen from the figure that the complexes are all crystalline compounds, and there are strong diffraction peaks at 2θ=5.68°, 5.74° and 5.80°, respectively, which belong to the characteristic diffraction peaks of samarium phenylphosphonate, iridium and terbium, respectively. .
[0048] In order to further determine the chemical composition of the complex MPPA (M=Sm, Y, Tb), its infrared absorption spectrum was measured ( Figure 4 ). Taking ...
Embodiment 3
[0051] This example provides the thermal behavior analysis of the rare earth metal complex in Example 1
[0052] The thermal behavior of MPPA (M=Sm, Y, Tb) was analyzed by thermogravimetry. Taking SmPPA as an example, there are three obvious weight loss intervals on the TG curve of SmPPA ( Image 6 ). The maximum weight loss temperatures of SmPPA in the three weight loss intervals were 128.9°C, 191.3°C and 617.1°C, and the weight loss rates were 2.16%, 2.20% and 18.20%, respectively. When the temperature was 800°C, the total weight loss and residual amount of the complex were 22.56% and 77.44%, respectively. It can be seen that SmPPA in N 2 Excellent thermal stability under atmosphere.
[0053] The changing trends of the thermogravimetric curves of YPPA and TbPPA are basically the same as those of SmPPA, and there are three obvious weight loss intervals on the TG curves ( Figure 7-8 ). Among them, the maximum weight loss temperature and weight loss of YPPA and TbPPA in ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| length | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More