Understanding nanoparticle porosity via nanoimpacts and XPS: electro-oxidation of platinum nanoparticle aggregates

Jiao Xue; Tanner Eden E. L.; Sokolov Stanislav V.; Palgrave Robert G.; Young Neil P.; Compton Richard G.

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Understanding nanoparticle porosity via nanoimpacts and XPS: electro-oxidation of platinum nanoparticle aggregates

机译：通过纳米仪和XPS理解纳米粒子孔隙率：铂纳米粒子聚集体的电氧化

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The porosity of platinum nanoparticle aggregates (PtNPs) is investigated electrochemically via particle-electrode impacts and by XPS. The mean charge per oxidative transient is measured from nanoimpacts; XPS shows the formation of PtO and PtO2 in relative amounts defined by the electrode potential and an average oxidation state is deduced as a function of potential. The number of platinum atoms oxidised per PtNP is calculated and compared with two models: solid and porous spheres, within which there are two cases: full and surface oxidation. This allows insight into extent to which the internal surface of the aggregate is 'seen' by the solution and is electrochemically active.

机译：通过颗粒电极的撞击和XPS通过粒子电极进行电化学研究铂纳米颗粒聚集体（PTNP）的孔隙率。根据纳米仪测量每个氧化瞬态的平均电荷; XPS显示由电极电位定义的相对量的PTO和PTO2的形成，并且作为潜力的函数推导出平均氧化状态。计算每pTNP氧化的铂原子数量并与两种模型进行比较：固体和多孔球体，其中有两种情况：完全和表面氧化。这允许深入了解溶液中的聚集体内表面的程度，并且电化学活跃。

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《Physical chemistry chemical physics: PCCP》 |2017年第21期|共6页
作者
Jiao Xue; Tanner Eden E. L.; Sokolov Stanislav V.; Palgrave Robert G.; Young Neil P.; Compton Richard G.;
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Univ Oxford Dept Chem Phys &

Theoret Chem Lab South Parks Rd Oxford OX1 3QZ England;

Univ Oxford Dept Chem Phys &

Theoret Chem Lab South Parks Rd Oxford OX1 3QZ England;

Univ Oxford Dept Chem Phys &

Theoret Chem Lab South Parks Rd Oxford OX1 3QZ England;

UCL Dept Chem 20 Gordon St London WC1H 0AJ England;

Univ Oxford Dept Mat Parks Rd Oxford OX1 3PH England;

Univ Oxford Dept Chem Phys &

Theoret Chem Lab South Parks Rd Oxford OX1 3QZ England;

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正文语种 eng
中图分类物理学;化学;
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1. Understanding nanoparticle porosity via nanoimpacts and XPS: electro-oxidation of platinum nanoparticle aggregates [J] . Jiao Xue, Tanner Eden E. L., Sokolov Stanislav V., Physical chemistry chemical physics: PCCP . 2017,第21期

机译：通过纳米仪和XPS理解纳米粒子孔隙率：铂纳米粒子聚集体的电氧化
2. Electro-oxidation Of 2-propanol And Acetone Over Platinum, Platinum-ruthenium, And Ruthenium Nanoparticles In Alkaline Electrolytes [J] . Matthew E.P. Markiewicz, Steven H. Bergens Journal of power sources . 2008,第1期

机译：2-丙醇和丙酮在碱性电解质中的铂，铂-钌和钌纳米粒子上的电氧化
3. The production of platinum-coated silicate nanoparticle aggregates for use in hypervelocity impact experiments [J] . Jon K. Hillier, S. Sestak, S.F. Green, Planetary and space science . 2009,第14a15期

机译：用于超高速冲击实验的铂涂层硅酸盐纳米颗粒聚集体的生产
4. Synthesis of Hollow Carbon Hemisphere and its Application as the Support Material for Platinum Nanoparticle Catalysts towards the Methanol Electro-oxidation [C] . Jing JI, Xuegao ZHOU, Haij ing LIU Annual World Conference on Carbon . 2014

机译：中空碳半球合成及其作为铂纳米粒子催化剂朝向甲醇电氧化的载体材料
5. Electrochemical study of the interaction of platinum with sulfonic acids and the carbon monoxide electro-oxidation on platinum-based nanoparticles. [D] . Li, Jie. 2004

机译：铂与磺酸相互作用以及一氧化碳在铂基纳米颗粒上的电氧化的电化学研究。
6. Understanding and Controlling the Aggregative Growthof Platinum Nanoparticles in Atomic Layer Deposition: An Avenue toSize Selection [O] . Fabio Grillo, *, Hao Van Bui, -1

机译：了解和控制总体增长原子层沉积中铂纳米颗粒的制备：一条通往尺寸选择
7. Understanding nanoparticle porosity via nanoimpacts and XPS: electro-oxidation of platinum nanoparticle aggregates [O] . Jiao, X, Tanner, EEL, Sokolov, SV, 2017

机译：通过纳米撞击和XPS了解纳米孔隙度：铂纳米粒子聚集体的电氧化

Understanding nanoparticle porosity via nanoimpacts and XPS: electro-oxidation of platinum nanoparticle aggregates

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