Green synthetic method for dendritic platinum nanocluster electrocatalyst
A green synthesis and dendritic technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as weak reducibility, high experimental hazards, and high cost problems, to achieve the effect of high specific surface area, excellent electrocatalytic activity and stable durability
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Embodiment 1
[0029] Synthesis process see figure 1 : Add 0.1008g Pluronic F127 into a 50ml two-neck flask, add 10ml distilled water, ultrasonically disperse, add 10ml H 2 PtCl 6 (20mMol / L) aqueous solution, ultrasonically mixed, so that Pluronic F127 and PtCl 6 2- The molar ratio of the mixture was 25:1, and it was allowed to stand for 1 hour. Thereafter, it was heated to reflux at 100° C. for 5 hours to obtain a black precipitate. Detect the crystal form of black precipitate with polycrystalline X-ray diffractometer (XRD), the result shows that product is the elemental platinum of face-centered cubic structure (see Figure 9 ); use atomic emission spectrometry (ICP) to determine that the purity of the product is 88.6%; characterize the morphology of the product with a transmission electron microscope (TEM), and the results show that the resulting product is a three-dimensional dendritic platinum nanocluster (see figure 2 ).
Embodiment 2
[0031] Synthesis process see figure 1 : Add 0.0230g Pluronic P123 into a 50ml two-neck flask, add 10ml distilled water, ultrasonically disperse, add 10ml H 2 PtCl 6 (20mMol / L) aqueous solution, ultrasonically mixed, so that Pluronic P123 and PtCl 6 2- The molar ratio is 50:1, let stand for 1 hour, and then heat to reflux at 90°C for 24 hours to obtain a black precipitate. Detect the crystal form of black precipitate with polycrystalline X-ray diffractometer (XRD), the result shows that product is the elemental platinum of face-centered cubic structure; Determine the purity of product with atomic emission spectrometry (ICP) to be 90.3%; ) to characterize the morphology of the product, and the results show that the obtained product is a prickly platinum nanostar cluster (see image 3 ).
Embodiment 3
[0033] Synthesis process see figure 1 : Add 0.0290g Pluronic L64 into a 50ml two-necked flask, add 10ml distilled water, ultrasonically disperse, add 10ml K 2 PtCl 4 (50mMol / L) aqueous solution, ultrasonically mixed, so that Pluronic L64 and PtCl 4 2- The molar ratio of the mixture was 50:1, and it was allowed to stand for 1 hour, and then heated to reflux at 80° C. for 24 hours to obtain a black precipitate. Detect the crystal form of black precipitate with polycrystalline X-ray diffractometer (XRD), the result shows that product is the elemental platinum of face-centered cubic structure; Determine the purity of product with atomic emission spectrometry (ICP) to be 91.3%; ) to characterize the morphology of the product, and the results show that the obtained product is a joint cluster of polygonal platinum nanoparticles (see Figure 4 ).
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