Ti plate embedding diamond particles boron-doped diamond electrode and its properties
DOU Jinjie1, LIU Dianhong2, JIANG Luan2, LI Jing2, MA Li1, WEI Qiuping1,2
1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China; 2. School of Materials Science and Engineering, Central South University, Changsha 410083, China
Abstract Diamond particles were embeded on the surface of Ti plate by a powder pellet mill, boron-doped diamond (BDD) films were deposited on this substrate by hot filament chemical vapor deposition to prepare a new Ti/D/BDD electrode, and Ti/BDD electrode was prepared for comparision. The morphology, B doping level, and electrochemical performance of the electrode were characterized by scanning electron microscope, Raman spectrometer, and electrochemical workstation, the degradation effect of the electrode simulated wastewater was tested by ultraviolet-visible spectrophotometer. The results show that the Ti/D/BDD electrode has a larger electrochemical active area and lower film impedance than the Ti/BDD electrode at the same deposition time, which makes the electrode show higher degradation rate and lower degradation energy consumption for acid orange G. When deposited for 10 h, Ti/D/BDD electrode has the highest electrical double layer capacitance (1.87 mF) and the lowest film resistance (0.4 Ω); after 120 min of degradation, the chromaticity removal rate of Ti/D/BDD electrode is 53.1% higher than that of Ti/BDD electrode, and the energy consumption is reduced by 14.2%.
DOU Jinjie,LIU Dianhong,JIANG Luan, et al. Ti plate embedding diamond particles boron-doped diamond electrode and its properties[J]. Materials Science and Engineering of Powder Metallurgy, 2024, 29(1): 45-52.
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