Reduction electrode substance, method for producing same, and electro-Fenton device using same
A manufacturing method and electrode technology, which are applied in the field of electro-Fenton devices and reducing electrode substances
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experiment example 1
[0082]
[0083] 1-ethyl-3-methylimidazolium dicyanamide (1-ethyl-3-methylimidazolium dicyanamide: Emim-dca), which is an ionic liquid, was dissolved in ethanol and the silica suspension was added thereto, followed by ultrasonic stirring to uniformly disperse the mixture. The dispersed mixture was dried at 250°C to remove the solvent, and the dried powder was thermally decomposed at temperatures of 700°C, 800°C, 900°C, and 1000°C for 1 hour. The synthesized powder was treated in 10% HF solution to remove silica. According to the carbonization temperature, the synthesized reducing electrode materials were named ILC-700, ILC-800, ILC-900, and ILC-1000, respectively.
experiment example 2
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[0085] The microstructure of ILC-700, ILC-800, ILC-900, and ILC-1000 prepared in Experimental Example 1 was observed by HR-TEM, and the BET surface area was analyzed, and the average pore size was analyzed by NLDFT model. Also, the atomic / molecular structures of ILC-700, ILC-800, ILC-900, and ILC-1000 were confirmed by X-ray photoelectron spectroscopy (XPS, PHI 5000 Versaprobe, Ulvac Co., Japan). The bond energy of the C=C bond (284.5 eV) was used as an energy calibration reference.
[0086] image 3 And Table 1 shows HR-TEM images and BET surface areas of ILC-700, ILC-800, ILC-900, and ILC-1000 prepared in Experimental Example 1. see image 3 It can be seen from Table 1 that there is not much difference in the shape, BET surface area and pore size of the samples. On the other side, see the section showing the atomic / molecular analysis results of ILC-700, ILC-800, ILC-900, and ILC-1000 prepared in Experimental Example 1 Figure 4 And Table 2 shows that ILC-900 h...
experiment example 3
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[0094] The ILC-700, ILC-800, ILC-900, and ILC-1000 prepared in Experimental Example 1 were used as working electrodes for the three-electrode system to analyze the electrochemical characteristics. And, in order to analyze the current, a rotating ring disk electrode (RRDE, PineResearch Instrument, USA) was used at 0.05M Na 2 SO 4 The solution was analyzed for electrochemical properties. Experimental Example 3 was carried out at pH 3.0, and O was injected into the electrolyte solution for 15 minutes. 2 .
[0095] In addition, in this test, a platinum wire and an Ag / AgCl electrode were used as a counter electrode and a reference electrode, respectively. At the same time, mix the powders of ILC-700, ILC-800, ILC-900, and ILC-1000 prepared in Experimental Example 1 into deionized water, isopropanol (IPA) and perfluorosulfonic acid (Nafion) The mixed solution of the solution was used to prepare the catalyst ink, and 30 μL of the ink was spread to 0.247 cm 2 The glass...
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