A kind of polycarbazole supported cobalt hybrid material and its preparation method and application
A hybrid material, polycarbazole technology, applied in the field of catalytic chemistry, can solve the problem of inability to achieve reuse, and achieve the effects of high conversion efficiency and green and mild reaction conditions
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Embodiment 1
[0047] Polycarbazole CNP (100 mg) was added to CoCl containing 2 ·6H 2 O (60 mg) and dimethylglyoxime (68 mg) in hot ethanol (30 mL), the resulting mixture was stirred at reflux in air for 12 h, and then cooled to room temperature; the resulting brown precipitate was collected by centrifugation, Wash with ethanol and diethyl ether in turn, and vacuum dry at room temperature to obtain the corresponding polycarbazole-supported cobalt hybrid material (Co / CNP), which is used in Example 2.
[0048] ICP analysis indicated a cobalt loading of 13.76 wt%.
[0049] Figure 1 to Figure 4 The photoelectron spectrum of the above-mentioned polycarbazole-supported cobalt hybrid material cobalt, the photoelectron spectrum of nitrogen, the solid NMR carbon spectrum, and the element distribution diagram are in order; the photoelectron spectrum of cobalt shows that the main form of cobalt is trivalent cobalt; the comparison metal The photoelectron spectra of nitrogen before and after loading ...
Embodiment 2
[0051] The photocatalyst powder Co / CNP (15 mg) was dispersed in 27 mL of 0.5 M HBF 4 CH 3 CN solution and TEOA (3 mL, 10 vol%) in a photocatalytic reactor. Then, after 30 minutes of ultrasonic dispersion, nitrogen gas was passed through the obtained suspension for 30 minutes to remove air. The reaction vessel was then connected to a glass airtight gas system (Labsolar-6A of Beijing Bofeilai Technology Co., Ltd.), under nitrogen conditions, irradiated with a 300 W xenon lamp (> 400 nm) at the top of the reactor, and the reaction temperature was passed through a circulating condensation device. Controlled at 15°C. The amount of hydrogen produced was determined by on-line gas chromatography (Timei GC7900) using argon as carrier gas by TCD detector. After 5 hours of reaction, the photocatalytic hydrogen production efficiency of Co / CNP was 410 μmol·g -1 ·h -1 , corresponding to the photocatalytic hydrogen production efficiency of single CNP is 58 μmol g -1 ·h -1 . Using the...
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