热丝化学气相沉积制备BDD薄膜电极的电催化特性  

Electro-catalytic behavior of boron-doped diamond films electrode prepared using hot filament chemical vapor deposition method

作　　者：常明[1,2] 高成耀[1] 

机构地区：[1]天津大学电子信息工程学院,天津300072 [2]天津理工大学天津市薄膜与通信器件重点实验室,天津300191

出　　处：《化工新型材料》2009年第5期37-39,92,共4页New Chemical Materials

基　　金：天津市重大科技攻关项目(06YFGZGX00300);天津市薄膜电子及通信器件重点实验室资助

摘　　要：研究了热丝化学气相沉积法(HFCVD)制备得到掺硼金刚石膜电极电催化氧化典型有机物苯酚的特性。Raman光谱测试显示制备BDD电极具有较好的金刚石相,循环伏安测试表明该电极具有较高的析氧过电位(+2.3V vsSCE)。在电催化氧化苯酚过程中,化学需氧量(COD)能够有效去除,降解过程中有较高的电流效率,在COD较高的情况下,瞬时电流效率(ICE)可达100%,随着COD的降低ICE逐渐减少。催化实验结果表明,BDD电极是一种优良的电催化降解有机物新型电极。Tantalum substrate born-doped diamond （BDD） electrode was prepared by hot filament chemical vapor deposition （HFCVD） technique and its electro-catalytic behavior in electrochemical oxidation of phenol were studied. Raman spectroscopy examinations demonstrated that the electrode had well-defined diamond features. It was observed that the BDD electrode had a much higher overpotential for water electrolysis prohibiting the evolution of oxygen in the cyclic volta- mmetry test. During the electrochemical oxidation of wastewater containing phenol process, the results obtained by chemical oxygen demand （COD） tests showed that the electrochemical process was suitable for completely degrading phenol with high current efficiency. It was observed that instant current efficiency （ICE） could reach up to 100% when the COD value was high and decreased with the decrease of COD. Results showed that BDD anode was a unique electrode for electrochemical degradation of organic.

关 键 词：硼掺杂金刚石薄膜电极 苯酚 电化学催化氧化 

分 类 号：X703.1[环境科学与工程—环境工程]