Pt/H-TiO2催化剂制备及其甲醇电催化氧化性能

CORC > 厦门大学 > 2014年第20卷

	Pt/H-TiO2催化剂制备及其甲醇电催化氧化性能; Preparation of Pt/H-TiO2 Catalyst with Improved Catalytic Performance for Methanol Electrooxidation
	韩金 ; 周志有 ; 汪强 ; 吕妙强 ; 陈驰 ; 孙世刚 ; HAN Jin ; ZHOU Zhi-you ; WANG Qiang ; LV Miao-qiang ; CHEN Chi ; SUN Shi-gang
刊名	http://electrochem.xmu.edu.cn/CN/abstract/abstract10052.shtml
	2014-04-28
关键词	铂纳米粒子 TiO2纳米棒氢处理甲醇电氧化氧缺陷 Ti3+填隙原子 platinum nanoparticles TiO2 nanorods hydrogen treatment methanol electrooxidation oxygen vacancy Ti3+ interstitial atom
英文摘要	以四氯化钛为前驱体，采用水热法合成二氧化钛纳米棒（TiO2，白色），在纯H2气氛，将其550 oC热处理2 h，即得有氧缺陷和Ti3+填隙原子的二氧化钛纳米棒（H-TiO2，灰黑色）. 将Pt纳米粒子（~ 1.9 nm）负载于此两种二氧化钛纳米棒上，制得Pt/TiO2和Pt/H-TiO2催化剂. XRD和XPS测试表明，氢处理TiO2晶型没有变化，仍属金红石型，但增加了Ti-OH表面物种. 电化学测试表明，H-TiO2载体能够增强氧在Pt表面的吸脱附能力，从而提高其甲醇电催化氧化活性，Pt/H-TiO2电极甲醇氧化峰电流密度为Pt/TiO2电极的1.6倍、Pt/C电极的2.1倍.; White TiO2 nanorods were synthesized by hydrothermal method with TiCl4 as a precursor. As-synthesized TiO2 nanorods were further subjected to high-temperature (550 oC) heat treatment for 2 h under H2 atmosphere to prepare gray black hydrogen-treated TiO2 (H-TiO2) nanorods with oxygen vacancies and Ti3+ interstitial atoms. The Pt nanoparticles of 1.9 nm were supported on these two types of TiO2 nanorods to form Pt/TiO2 and Pt/H-TiO2 catalysts. XRD data indicates that the crystal structure of TiO2 was still reserved as rutile after hydrogen treatment, but the surface was covered by some Ti-OH species, as evidenced by XPS test. Electrochemical tests demonstrate that the oxygen vacancies of H-TiO2 can enhance the adsorption/desorption of oxygen on Pt nanoparticles, which promotes the electrocatalytic activity of H-TiO2 towards methanol oxidation. As a result, the peak current density of methanol oxidation on Pt/H-TiO2 was 1.6 and 2.1 times those of methanol oxidation on Pt/TiO2 and Pt/C, respectively.; 国家自然科学基金项目（No. 20933004）资助; 作者联系地址：1. 厦门大学固体表面物理化学国家重点实验室，化学化工学院化学系，福建厦门 361005；2. 华东理工大学化学工程国家重点实验室，上海 200237; Author's Address: 1. State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China; 2. State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China; 通讯作者E-mail：zhouzy@xmu.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.130418]
专题	2014年第20卷
推荐引用方式 GB/T 7714	韩金,周志有,汪强,等. Pt/H-TiO2催化剂制备及其甲醇电催化氧化性能, Preparation of Pt/H-TiO2 Catalyst with Improved Catalytic Performance for Methanol Electrooxidation[J]. http://electrochem.xmu.edu.cn/CN/abstract/abstract10052.shtml,2014.
APA	韩金.,周志有.,汪强.,吕妙强.,陈驰.,...&SUN Shi-gang.(2014).Pt/H-TiO2催化剂制备及其甲醇电催化氧化性能.http://electrochem.xmu.edu.cn/CN/abstract/abstract10052.shtml.
MLA	韩金,et al."Pt/H-TiO2催化剂制备及其甲醇电催化氧化性能".http://electrochem.xmu.edu.cn/CN/abstract/abstract10052.shtml (2014).