|
个人信息Personal Information
教授
博士生导师
硕士生导师
性别：女
毕业院校：大连理工大学
学位：博士
所在单位：化工学院
学科：应用化学. 精细化工. 有机化学
办公地点：大连市高新区凌工路2号西部校区化工楼E434房间
联系方式：0411-84986265
电子邮箱：zhangshf@dlut.edu.cn
Enhanced catalytic activity and stability of Pt nanoparticles by surface coating of nanosized graphene oxide for hydrogen production from hydrolysis of ammonia-borane
点击次数：
论文类型：期刊论文
发表时间：2017-12-01
发表刊物：SUSTAINABLE ENERGY & FUELS
收录刊物：SCIE
卷号：1
期号：10
页面范围：2128-2133
ISSN号：2398-4902
摘要：We report the electronic modification of silica supported Pt nanoparticles (SiO2@Pt) by coating a 1 nm thin layer of nanosized graphene oxide (NGO). The resulting SiO2@Pt@NGO showed much enhanced catalytic activity and stability for hydrogen production from hydrolysis of ammoniaborane compared with SiO2@Pt and graphene supported Pt nanoparticles, with an impressive initial TOF value reaching 324.6 mol(H2) mol(Pt)(-1) min(-1). Detailed characterization by means of HRTEM and EDS elemental mapping proved the structural correctness of SiO2@Pt@NGO. The XPS results showed that the binding energy of Pt-0 4f(7/2) in SiO2@Pt@NGO was 71.12 eV slightly higher than 70.84 eV of Pt-0 4f(7/2) in SiO2@Pt, indicating more electron-deficient Pt atoms after the interaction with NGO, which may be responsible for the enhanced catalytic performance.