Co(OH)_(2)/NiAl-LDH共修饰的α-Fe_(2)O_(3)光阳极增强光电化学分解水性能  

Properties of photoelectrochemical decomposition of water enhanced by Co(OH)_(2)/NiAl-LDH co-modifiedα-Fe_(2)O_(3)photoanode

作　　者：关媛[1] 杜琼蝶 周永生[1] 顾昕懿 王少莽[2] 李忠玉[1] GUAN Yuan;DU Qiongdie;ZHOU Yongsheng;GU Xinyi;WANG Shaomang;LI Zhongyu(Jiangsu Province Key Laboratory of Fine Petrochemical Engineering,Changzhou University,Changzhou 213164,China;School of Urban Construction,Changzhou University,Changzhou 213164,China)

机构地区：[1]江苏省精细石油化工重点实验室(常州大学),江苏常州213164 [2]常州大学城市建设学院,江苏常州213164

出　　处：《常州大学学报（自然科学版）》2023年第5期16-25,共10页Journal of Changzhou University：Natural Science Edition

基　　金：国家自然科学基金资助项目(21876015);江苏省自然科学基金资助项目(BK20190934)。

摘　　要：采用水热法在掺杂氟的SnO_(2)导电玻璃(FTO)上生长α-Fe_(2)O_(3)光阳极薄膜,通过负载不同量的NiAl-LDH及Co(OH)_(2)双助催化剂,对α-Fe_(2)O_(3)的水分解性能进行改进。通过XRD,SEM和XPS对材料的结构进行表征,结果显示,Co(OH)_(2)/NiAl-LDH薄膜已成功制备,其在α-Fe_(2)O_(3)表面呈均匀分布的交联网状结构,该网状结构促进质子和反阴离子的快速转移,减少电解质溶液对α-Fe_(2)O_(3)的腐蚀。光电化学性能测试结果表明,在强碱性电解质溶液中,相比较于纯α-Fe_(2)O_(3)光阳极,[Co(OH)_(2)]_(1)/Ni_(3)Al-LDH/α-Fe_(2)O_(3)复合材料表现出较优的光电催化活性,光电流密度提高4倍,且在光照下的稳定性良好。α-Fe_(2)O_(3)photoanode film was grown on SnO_(2)conductive glass doped with fluorine(FTO)via hydrothermal method,which was modified with different amounts of NiAl-LDH and Co(OH)_(2)double cocatalysts to improve water decomposition performance ofα-Fe_(2)O_(3)photoanode.The materials were characterized by XRD,SEM and XPS.It was confirmed that the Co(OH)_(2)/NiAl-LDH films were successfully prepared with a uniformly distributed cross-linked network structure on the surface ofα-Fe_(2)O_(3)film,which facilitated the rapid transfer of protons and counter anions and reduced the influence of electrolyte solution on corrosion ofα-Fe_(2)O_(3).Compared to bareα-Fe_(2)O_(3)photoanode,the test results of photoelectrochemical performance indicated that the[Co(OH)_(2)]_(1)/Ni_(3)Al-LDH/α-Fe_(2)O_(3)composite materials showed better photoelectric catalytic activity in strong alkaline electrolyte solution.The photocurrent density was increased by 4 times and the stability was good under light irradiation.

关 键 词：α-Fe_(2)O_(3)光阳极 NiAl-LDH Co(OH)_(2) 水分解性能 光电催化活性 

分 类 号：O643[理学—物理化学]