Conjugated polymer loaded metal platinum nano-particles, preparation method thereof and application of conjugated polymer loaded metal platinum nano-particles in photocatalytic hydrogen evolution
A conjugated polymer, platinum nanoparticle technology, used in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, hydrogen production, etc. Precious metal cocatalysts cannot directly take advantage of the problems of hole loading and weak coordination bond force to achieve good photocatalytic cycle stability, promote migration and transfer, and prevent recombination.
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Embodiment 1
[0044] Weigh 5 mmol of dithiophene[3,2-B:2',3'-D]thiophene and 15 mmol of m-chloroperoxybenzoic acid into a round bottom flask by molar ratio, add 30 mL of anhydrous dichloromethane, 20 °C for 24 h and cooled to room temperature. DTDO was obtained by column chromatography with petroleum ether: dichloromethane at a volume ratio of 2:1, and vacuum-dried at 50 °C for 24 h.
[0045] Weigh 0.5 mmol of DTDO, 0.25 mmol of 1,3,6,8-tetrabromopyrene, 1.5 mmol of anhydrous potassium carbonate, 0.015 mmol of tris(dibenzylideneacetone) dipalladium, 0.3 mmol of pivalic acid, 0.03 mmol of tris(o-methoxyphenyl)phosphine, and 10 mL of anhydrous phthalamide. Heated at 120 °C for 72 h and cooled to room temperature. Wash with 15 mL of deionized water and dry under vacuum at 60 °C for 24 h to obtain PyDTDO-3.
[0046] Weigh 40 mg of PyDTDO-3, add 10 mL of deionized water, 1.2 mL of chloroplatinic acid, and 10 mL of DMF, heat at 70 °C for 10 h, and cool to room temperature. Wash with 15 mL of ...
Embodiment 2
[0048] Similar to Example 1, except that 2 mL of chloroplatinic acid was measured, and the obtained sample was named 5% Pt / PyDTDO-3.
Embodiment 3
[0050] Similar to Example 1, except that 2.8 mL of chloroplatinic acid was measured, and the obtained sample was named 7% Pt / PyDTDO-3.
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