在TiO2纳米阵列上电沉积RuO2用于CO2电还原

CORC > 厦门大学 > 2017年第23卷

	在TiO2纳米阵列上电沉积RuO2用于CO2电还原; Electrodeposition of RuO2 Layers on TiO2 Nanotube Array toward CO2 Electroreduction
	蒋孛 ; 张莉娜 ; 秦先贤 ; 蔡文斌 ; Bei Jiang ; Lina Zhang ; Xianxian Qin ; Wenbin Cai
刊名	http://electrochem.xmu.edu.cn/CN/abstract/abstract10383.shtml
	2017-04-28
关键词	CO2还原无定型RuO2 TiO2纳米阵列电沉积 CO2 reduction amorphous RuO2 TiO2 nanotube array electrodeposition
英文摘要	传统上，RuO2/TiO2复合电极制备是通过在TiO2/Ti基体上多次涂覆含Ru前驱体溶液和随后热分解（TD）来实现的. 为克服上述方法中Ru用量大和利用率低之不足, 本工作主要基于循环伏安法（CV）在TiO2纳米管阵列（TNA）上电沉积RuO2制备RuO2CV/TNA复合电极. SEM、GIXRD和CV结果表明，电沉积的RuO2为无定型结构, 所制备电极中的Ru用量约为传统的RuO2TD/TNA电极中Ru用量的1/30. 尽管两电极催化CO2还原产物的法拉第效率接近, 但是RuO2CV/TNA电极比RuO2TD/TNA电极展示了更高的还原电流, 较正的初始还原电位和更好的稳定性. 与磷酸盐缓冲溶液中电还原CO2相比，RuO2CV/TNA电极在0.1 mol•L-1 KHCO3中电还原CO2除生成更高法拉第效率的甲酸根和甲烷外，还检测到CO的生成.; RuO2/TiO2 composite materials have multitude of electrocatalytic applications including but not limited to CO2 reduction reaction (CO2RR). RuO2/TiO2 electrodes were previously prepared by repetitive coating and thermal decomposition (TD) of a Ru(III) precursor solution on Ti substrate. In this work, electrochemical potential cycling is applied to deposit amorphous RuO2 (α-RuO2) layers onto TiO2 nanotube array (TNA) (RuO2CV/TNA) preformed on Ti foil. SEM, GIXRD, and voltammetry are applied to characterize the structures of the resulting RuO2CV/TNA. Ru loading on the RuO2CV/TNA electrode is ca. 1/30 of that on the conventional RuO2TD/TNA electrode. Although both electrodes yield similar faradaic efficiencies (FEs) for the reduction products, the RuO2CV/TNA electrode displays a much higher reduction current, a more positive initial reduction potential and a better durability than the RuO2TD/TNA one. In addition to higher FEs for formate and CH4, the RuO2CV/TNA electrode yields the product of CO for the CO2RR in 0.1 mo•lL-1 KHCO3, which is not available in a PBS solution with pH 7.; This work is supported by the 973 Program (No. 2015CB932303) of MOST and NSFC (No. 21473039).; This work is supported by the 973 Program (No. 2015CB932303) of MOST and NSFC (No. 21473039).; 作者联系地址：复旦大学化学系，能源材料化学协同创新中心，上海市分子催化与功能材料表面重点实验室，上海 200433; Author's Address: Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, Fudan University, Shanghai 200433, China; 通讯作者E-mail：wbcai@fudan.edu.cn
语种	中文
出版者	厦门大学《电化学》编辑部
内容类型	期刊论文
源URL	[http://dx.doi.org/10.13208/j.electrochem.161253]
专题	2017年第23卷
推荐引用方式 GB/T 7714	蒋孛,张莉娜,秦先贤,等. 在TiO2纳米阵列上电沉积RuO2用于CO2电还原, Electrodeposition of RuO2 Layers on TiO2 Nanotube Array toward CO2 Electroreduction[J]. http://electrochem.xmu.edu.cn/CN/abstract/abstract10383.shtml,2017.
APA	蒋孛.,张莉娜.,秦先贤.,蔡文斌.,Bei Jiang.,...&Wenbin Cai.(2017).在TiO2纳米阵列上电沉积RuO2用于CO2电还原.http://electrochem.xmu.edu.cn/CN/abstract/abstract10383.shtml.
MLA	蒋孛,et al."在TiO2纳米阵列上电沉积RuO2用于CO2电还原".http://electrochem.xmu.edu.cn/CN/abstract/abstract10383.shtml (2017).