Ti電極陽極表面處理於電芬頓系統之耐蝕特性探討

Investigation of the anodization of Ti electrode onto corrosion resistance in Electro-Fenton systems

王宜達(Yi-Ta Wang) ； 蕭逸(Yi Hsiao)

《防蝕工程》 33卷4期 (2019/12) Pp. 26-35

https://doi.org/10.6376/JCCE.201912_33(4).0004

摘要

能源議題與工業汙染危害環境，近來備受各國矚目。燃料電池之陽極能產電，陰極則有淨化汙廢水功能；高級氧化程序結合電芬頓系統陰極，將更具備自我系統保持機能。本研究使用以電化學陽極氧化法進行純鈦金屬電極陽極處理，建構具不同大小孔洞二氧化鈦奈米管狀結構；實驗陽極反應電位為60 V、40 V和20 V，而後進行四點探針、線性掃描伏安法、掃描式電子顯微鏡、極化曲線塔弗外插法、及30分鐘電芬頓系統Rhodamine B（RhB）染料降解率量測。結果顯示，電芬頓系統環境最佳脫色率52.9%，陽極反應電位為60 V，相較於未經陽極處理之純Ti電極脫色率高出1.65倍，且其耐蝕性亦優於40 V及20 V電極。本研究製備電芬頓系統Ti電極，其結果將有助於未來進一步研究與應用。

關鍵字

鈦 ； 陽極處理 ； 電芬頓 ； 二氧化鈦 ； 奈米管狀結構

並列摘要

Energy issues and industrial pollution are harmful to the environment, and have attracted attention from various countries recently. The anode of the fuel cell can produce electricity, and the cathode has the function of purifying sewage. Advanced oxidation process combined with electro-Fenton system cathode, will have more self-system maintenance. In this study, the electrochemical anodization method was used to carry out the treatment of anode on pure titanium electrode, and the TiO_2 nanotubes with different pore sizes was constructed. The experimental parameters of anodization voltage were 60 V, 40 V and 20 V, and subsequently analyzed by Four-Point Probe, Linear sweep voltammetry, Scanning electron microscope, Polarization curve with Tafel extrapolation, and the Rhodamine B (RhB) decolorization in electro-Fenton system during 30 minutes. The results show that the best decolorization rate in electro-Fenton system is 52.9%, and the anodization voltage is 60 V, which is 1.65 times higher than that of the pure Ti electrode without anodization, and its corrosion resistance is better than 40V and 20V electrodes. This study prepared the Ti electrode of electro-Fenton system, and the results will be helpful for further research and application in the future.

並列關鍵字

Titanium ； Anodization ； Electro-Fenton ； TiO_2 ； nanotubes