Platinum catalyzed growth of NiPt hollow spheres with an ultrathin shell
Platinum catalyzed growth of NiPt hollow spheres with an ultrathin shell
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铂催化超薄壳 NiPt 空心球的生长
DOI：
10.1039/c0jm02563a
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发表时间：
2011-01-01
影响因子：
--
通讯作者：
Cao, Xia
中科院分区：
文献类型：
--
作者：
Sun, Qian;Ren, Zheng;Cao, Xia
活性、稳健且低成本的催化是高效催化剂商业化的关键组成部分。开发有效的合成和加工尺寸和组成可控的双金属纳米颗粒的策略是催化剂制备的重要途径。在本文中，开发了一种贵金属催化化学生长工艺。已成功合成具有超薄壳（2-3 nm）的近单分散双金属 NiPt 空心球。通过引入适量的前体分子，可以方便地调节 NiPt 纳米球的尺寸和组成。由于 Pt 的催化生长和合金化效应，依次观察到实心、空心以及铃铛 NiPt 纳米结构。还证明了镍掺杂对电催化性能的显着抗衰变作用。优异的电催化活性和稳定性使双金属NiPt空心球成为催化剂和传感材料的有希望的候选者。
Active, robust, and low-cost catalysis is a key component for the commercialization of efficient catalysts. The development of effective strategies for the synthesis and processing of bimetallic nanoparticles with controllable size and composition is an important approach to the catalyst preparation. In this paper, a noble metal catalyzed chemical growth process has been developed. Nearly monodispersed bimetallic NiPt hollow spheres with an ultrathin shell (2–3 nm) have been successfully synthesized. Size and composition of the NiPt nanospheres has been conveniently tuned by introducing suitable amounts of precursory molecules. The solid, hollow as well as the jingle bell NiPt nanostructures are sequentially observed as results of the catalytic growth and alloying effect of Pt. Also demonstrated are the pronounced decay-resistant effects of Ni doping on the electrocatalytic properties. The excellent electrocatalytic activity and stability make the bimetallic NiPt hollow spheres promising candidates for catalysts and sensing materials.