Changes in the oxidation state of Pt single-atom catalysts upon removal of chloride ligands and their effect for electrochemical reactions

被引：51
作者：
Shin, Sangyong [1 ]
Kim, Jiwhan [1 ]
Park, Subin [2 ]
Kim, Hee-Eun [1 ]
Sung, Yung-Eun [2 ]
Lee, Hyunjoo [1 ]
机构：
[1] Korea Adv Inst Sci & Technol, Dept Chem & Biomol Engn, Daejeon 34141, South Korea
[2] Seoul Natl Univ, Sch Chem & Biol Engn, IBS, Ctr Nanoparticle Res, Seoul 08826, South Korea
来源：
CHEMICAL COMMUNICATIONS | 2019年 / 55卷 / 45期
基金：
新加坡国家研究基金会;
关键词：
METAL-SUPPORT INTERACTIONS; HYDROGEN-PEROXIDE; CO OXIDATION; OXYGEN; REDUCTION; PLATINUM; H2O2; ENCAPSULATION; TRENDS; PD;
D O I：
10.1039/c9cc01593k
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Single atomic Pt supported on TiC was prepared from chloride Pt precursors, then the chloride ligands were intentionally removed by increasing the reduction temperature. The 0.2 wt% Pt/ TiC catalyst reduced at 300 8C had more reduced Pt single-atoms with fewer chloride ligands and exhibited the highest currents for H2O2 formation in the electrochemical oxygen reduction reaction. Controlling the oxidation state of the single-atoms is very important to maximize the activity of the single-atom catalysts.
引用
收藏
页码：6389 / 6392
页数：4
相关论文
共 39 条
  • [1] Adi R. R., 1989, MATER CHEM PHYS, V22, P349
  • [2] [Anonymous], 2006, ANGEW CHEM-GER EDIT
  • [3] Some contributions of electron microscopy to the characterisation of the strong metal-support interaction effect
    Bernal, S
    Calvino, JJ
    Cauqui, MA
    Gatica, JM
    Cartes, CL
    Omil, JAP
    Pintado, JM
    [J]. CATALYSIS TODAY, 2003, 77 (04) : 385 - 406
  • [4] Hydrogen peroxide synthesis: An outlook beyond the anthraquinone process
    Campos-Martin, Jose M.
    Blanco-Brieva, Gema
    Fierro, Jose L. G.
    [J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2006, 45 (42) : 6962 - 6984
  • [5] Tuning selectivity of electrochemical reactions by atomically dispersed platinum catalyst
    Choi, Chang Hyuck
    Kim, Minho
    Kwon, Han Chang
    Cho, Sung June
    Yun, Seongho
    Kim, Hee-Tak
    Mayrhofer, Karl J. J.
    Kim, Hyungjun
    Choi, Minkee
    [J]. NATURE COMMUNICATIONS, 2016, 7
  • [6] Metal-oxide interfacial reactions:: Encapsulation of Pd on TiO2 (110)
    Fu, Q
    Wagner, T
    Olliges, S
    Carstanjen, HD
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (02) : 944 - 951
  • [7] Single Atom (Pd/Pt) Supported on Graphitic Carbon Nitride as an Efficient Photocatalyst for Visible-Light Reduction of Carbon Dioxide
    Gao, Guoping
    Jiao, Yan
    Waclawik, Eric R.
    Du, Aijun
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2016, 138 (19) : 6292 - 6297
  • [8] Greeley J, 2009, NAT CHEM, V1, P552, DOI [10.1038/NCHEM.367, 10.1038/nchem.367]
  • [9] XANES determination of the platinum oxidation state distribution in cancer cells treated with platinum(IV) anticancer agents
    Hall, MD
    Foran, GJ
    Zhang, M
    Beale, PJ
    Hambley, TW
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (25) : 7524 - 7525
  • [10] Tuning metal support interactions enhances the activity and durability of TiO2-supported Pt nanocatalysts
    Hsieh, Bing-Jen
    Tsai, Meng-Che
    Pan, Chun-Jern
    Su, Wei-Nien
    Rick, John
    Chou, Hung-Lung
    Lee, Jyh-Fu
    Hwang, Bing-Joe
    [J]. ELECTROCHIMICA ACTA, 2017, 224 : 452 - 459
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