Monodisperse Pt nanoparticles anchored on N-doped black TiO2 as high performance bifunctional electrocatalyst
Monodisperse Pt nanoparticles anchored on N-doped black TiO2 as high performance bifunctional electrocatalyst
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锚定在 N 掺杂黑色 TiO2 上的单分散 Pt 纳米颗粒作为高性能双功能电催化剂
DOI：
10.1016/j.jallcom.2017.01.152
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发表时间：
2017-04
影响因子：
6.2
通讯作者：
Huang Fuqiang
中科院分区：
文献类型：
--
作者：
Wang Xin;Yuan Xiaotao;Liu Xiangye;Dong Wujie;Dong Chenlong;Lou Minghe;Li Juncen;Lin Tianquan;Huang Fuqiang
掺氮黑二氧化钛(Nx：TiO2x，−x)作为一种新型的光催化剂最近引起了人们的关注。由于Ti3+物种的存在，它比纯的TiO2具有更高的电导率和更适合氧还原和析氢的能级。独特的电子结构和较强的金属-载体相互作用使其成为铂基电催化剂的候选载体。碳作为铂基电催化剂的载体是普遍存在的。但其耐久性能差，耐甲醇性能差。相反，掺氮二氧化钛的化学稳定性有助于提高铂/氮氧化物：二氧化钛−催化剂的耐久性和耐甲醇能力。采用简单的硼氢化物还原方法将单分散的铂纳米颗粒负载到Nx：TiO2x的−上。铂/氮氧化物：二氧化钛−x杂化催化剂表现出比铂更好的氧还原反应活性，半波电位为0.78nV(与可逆氢电极相比)和良好的析氢反应性能，起始过电位为19mV，与铂/碳催化剂相似。更重要的是，与铂/碳催化剂相比，铂/NX：TiO2TiO2x催化剂具有更强的耐久性和更高的耐甲醇能力。所有这些静电性能都源于ORR和HER的合适能级以及铂与Nx：TiO2TiO2XSupport之间的强相互作用。这种杂化材料是未来燃料电池很有前途的候选材料。
Nitrogen-doped black TiO2(Nx:TiO2−x) recently attracted attention as a novel photocatalyst. It has higher electrical conductivity and more suitable energy level for oxygen reduction and hydrogen evolution than pure TiO2due to the presence of Ti3+species. The unique electronic structure and strong metal-support interaction make it a candidate support for Pt-based electrocatalyst. Carbon is universal as support of Pt-based electrocatalyst. However, it is restricted to the poor durability and bad methanol tolerance. On the contrary, the chemical stability of nitrogen-doped TiO2contributes to the higher durability and methanol tolerance of Pt/Nx:TiO2−xthan Pt/C catalyst. Monodisperse Pt nanoparticles are loaded on Nx:TiO2−xby a facile borohydride reduction method. The Pt/Nx:TiO2−xhybrid shows better oxygen reduction reaction (ORR) activity with the half wave potential of 0.78 V (vs.reversible hydrogen electrode) than Pt and good hydrogen evolution reaction (HER) performance with 19 mV onset overpotential, similar to Pt/C catalyst. More importantly, Pt/Nx:TiO2−xcatalyst has robust durability and higher methanol tolerance than Pt/C catalyst. All these electrostatic performances stem from the suitable energy level for ORR and HER and the strong interaction between Pt and Nx:TiO2−xsupport. This hybrid material is a promising candidate for the fuel cell in the future.
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影响因子：
9.2
作者：
Xingwen Yu;S. Ye
通讯作者：
Xingwen Yu;S. Ye
异质包裹还原氧化石墨烯的 TiO2 纳米纤维作为甲醇氧化的高效 Pt 电催化剂载体
影响因子：
7.2
作者：
Xiaohua Lu;Linghong Lu;Xiaojing Liu;Hanjie Ying
通讯作者：
Hanjie Ying
影响因子：
12.9
作者：
M. Tian;Guosheng Wu;Aicheng Chen
通讯作者：
M. Tian;Guosheng Wu;Aicheng Chen
影响因子：
9.2
作者：
M. Jeon;P. McGinn
通讯作者：
M. Jeon;P. McGinn
影响因子：
32.5
作者：
Jaouen, Frederic;Proietti, Eric;Zelenay, Piotr
通讯作者：
Zelenay, Piotr