IMR OpenIR
Enhanced Stability of Immobilized Platinum Nanoparticles through Nitrogen Heteroatoms on Doped Carbon Supports
Shi, Wen; Wu, Kuang-Hsu; Xu, Junyuan; Zhang, Qiang; Zhang, Bingsen; Su, Dang Sheng; Zhang, BS; Su, DS (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China.
2017-10-24
发表期刊AMER CHEMICAL SOC
ISSN0897-4756
卷号29期号:20页码:8670-8678
摘要Catalysts in the form of dispersed platinum nanoparticles (Pt NPs) immobilized on carbon usually suffer from deactivation through sintering under reaction conditions. In this contribution, we report the enhanced stability of highly dispersed Pt NPs on surface-modified carbon nanotubes (CNTs) against thermal and electrochemical sintering by N heteroatoms in the N-doped carbon support. The improved antisintering property of Pt NPs under thermal condition is characterized by in situ transmission electron microscopy (TEM), while the stability in electrochemical methanol oxidation reaction (MOR) is further examined at identical location (IL) using an advanced IL-TEM technique. A correlation of the Pt NP growth with the electrochemical surface area (ECSA) and the mass activity in MOR has been inferred. Our results indicate that both the surface oxygen groups and nitrogen-doped species are responsible for the fine dispersion of Pt NPs on the surface-modified CNTs, while the Pt NPs can be effectively stabilized under thermal and electrochemical conditions through the strong metal-support interaction via N heteroatoms. We further reveal that the mass activity of Pt NP is closely associated with the ECSA rather than directly affected by N-doping to CNTs.; Catalysts in the form of dispersed platinum nanoparticles (Pt NPs) immobilized on carbon usually suffer from deactivation through sintering under reaction conditions. In this contribution, we report the enhanced stability of highly dispersed Pt NPs on surface-modified carbon nanotubes (CNTs) against thermal and electrochemical sintering by N heteroatoms in the N-doped carbon support. The improved antisintering property of Pt NPs under thermal condition is characterized by in situ transmission electron microscopy (TEM), while the stability in electrochemical methanol oxidation reaction (MOR) is further examined at identical location (IL) using an advanced IL-TEM technique. A correlation of the Pt NP growth with the electrochemical surface area (ECSA) and the mass activity in MOR has been inferred. Our results indicate that both the surface oxygen groups and nitrogen-doped species are responsible for the fine dispersion of Pt NPs on the surface-modified CNTs, while the Pt NPs can be effectively stabilized under thermal and electrochemical conditions through the strong metal-support interaction via N heteroatoms. We further reveal that the mass activity of Pt NP is closely associated with the ECSA rather than directly affected by N-doping to CNTs.
部门归属[shi, wen ; wu, kuang-hsu ; zhang, bingsen ; su, dang sheng] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, liaoning, peoples r china ; [wu, kuang-hsu] univ sci & technol china, sch mat sci & engn, hefei 230026, anhui, peoples r china ; [xu, junyuan] int iberian nanotechnol lab, ave mestre jose veiga, p-4715330 braga, portugal ; [zhang, qiang] tsinghua univ, dept chem engn, beijing key lab green chem react engn & technol, beijing 100084, peoples r china
学科领域Chemistry, Physical ; Materials Science, Multidisciplinary
资助者National Natural Science Foundation of China [91545119, 21773269]; Youth Innovation Promotion Association CAS [2015152]; Joint Foundation of Liaoning Province National Science Foundation; Shenyang National Laboratory for Materials Science [2015021011]; Chinese Academy of Sciences [XDA09030103]
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/79033
专题中国科学院金属研究所
通讯作者Zhang, BS; Su, DS (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China.
推荐引用方式
GB/T 7714
Shi, Wen,Wu, Kuang-Hsu,Xu, Junyuan,et al. Enhanced Stability of Immobilized Platinum Nanoparticles through Nitrogen Heteroatoms on Doped Carbon Supports[J]. AMER CHEMICAL SOC,2017,29(20):8670-8678.
APA Shi, Wen.,Wu, Kuang-Hsu.,Xu, Junyuan.,Zhang, Qiang.,Zhang, Bingsen.,...&Su, DS .(2017).Enhanced Stability of Immobilized Platinum Nanoparticles through Nitrogen Heteroatoms on Doped Carbon Supports.AMER CHEMICAL SOC,29(20),8670-8678.
MLA Shi, Wen,et al."Enhanced Stability of Immobilized Platinum Nanoparticles through Nitrogen Heteroatoms on Doped Carbon Supports".AMER CHEMICAL SOC 29.20(2017):8670-8678.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Shi, Wen]的文章
[Wu, Kuang-Hsu]的文章
[Xu, Junyuan]的文章
百度学术
百度学术中相似的文章
[Shi, Wen]的文章
[Wu, Kuang-Hsu]的文章
[Xu, Junyuan]的文章
必应学术
必应学术中相似的文章
[Shi, Wen]的文章
[Wu, Kuang-Hsu]的文章
[Xu, Junyuan]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。