Fabrication and photoelectrocatalytic performance of C3N4-modified Ti/PbO2 anode with surface hydrophobicity
Fabrication and photoelectrocatalytic performance of C3N4-modified Ti/PbO2 anode with surface hydrophobicity
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DOI：
10.1007/s10008-020-04657-4
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发表时间：
2020-05
影响因子：
2.5
通讯作者：
Wenfeng Li;Jiahui Lyu;K. Zhou;Hongchao Ma;Chun Ma;Xiaoli Dong;Yinghuan Fu
中科院分区：
文献类型：
--
作者：
Wenfeng Li;Jiahui Lyu;K. Zhou;Hongchao Ma;Chun Ma;Xiaoli Dong;Yinghuan Fu
合理的疏水阳极被认为是光电催化降解废水的理想电极。采用电沉积法制备了具有可调疏水特性的C3 N4修饰Ti/PbO 2电极。结果表明，C3 N4的引入改变了PbO 2薄膜的形貌、表面亲水性和疏水性，提高了PbO 2薄膜的光电化学活性区域，提高了PbO 2薄膜的羟基自由基生成效率。另外，在PbO 2涂层中引入C3 N4可以提高PbO 2的析氧电位和载流子密度。光电催化降解实验表明，C3 N4的加入能进一步提高PbO 2的催化性能，且在光电催化过程中存在明显的光电协同效应。这些结果表明，合理的表面疏水特性与光电催化相结合是一种有前景的废水处理方法。
Reasonable hydrophobic anode is deemed to be a promising electrode for photoelectrocatalytic degradation of wastewater. In this study, the C3N4-modified Ti/PbO2electrode with tunable hydrophobic characteristics is fabricated by a facile electrodeposition process. It is found that the introduction of C3N4into the PbO2films changed the morphology, surface hydrophilicity, and hydrophobicity of the electrode, which promotes the photoelectrochemical active areas, generating efficiency of hydroxyl radicals. In addition, introducing C3N4into PbO2coating can enhance oxygen evolution potential and carrier density of PbO2. Photoelectrocatalytic degradation experiments show that the addition of C3N4can further improve the catalytic performance of PbO2and there exists a significant photoelectric synergism in photoelectrocatalytic process. These results demonstrate that the combination of reasonable surface hydrophobic characteristics and photoelectrocatalytic is a prospective approach for wastewater treatment.