Convenient Synthesis of 3D Fluffy PtPd Nanocorals Loaded on 2D h-BN Supports as Highly Efficient and Stable Electrocatalysts for Alcohol Oxidation Reaction
Convenient Synthesis of 3D Fluffy PtPd Nanocorals Loaded on 2D h-BN Supports as Highly Efficient and Stable Electrocatalysts for Alcohol Oxidation Reaction
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DOI：
10.1021/acsomega.9b01296
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发表时间：
2019-06
期刊：
影响因子：
4.1
通讯作者：
Huasheng Zhang;Linlin Xu;Yue Tian;Anxin Jiao;Shuang Li;Xiangdong Liu;Ming Chen;Feng Chen
中科院分区：
文献类型：
--
作者：
Huasheng Zhang;Linlin Xu;Yue Tian;Anxin Jiao;Shuang Li;Xiangdong Liu;Ming Chen;Feng Chen
燃料电池作为清洁和可持续能源具有巨大的前景，而其广泛的商业化在很大程度上取决于高效和稳定的电催化剂的开发。本文采用紫外激光激发光化学反应，一步合成了二维六方氮化硼（h-BN）载体负载的三维蓬松PtPd纳米珊瑚（NC）.对于醇的氧化反应，具有独特纳米孔表面的h-BN/PtPd纳米催化剂由于在高的电极-电解质接触面积上形成了丰富的活性中心和电荷转移通道，因而具有比以往许多纳米催化剂更高的电催化性能。特别是在碱性溶液中甲醇氧化反应中，h-BN/PtPd纳米粒子的质量活度约为962.8 mA mgPtPd-1，即使经过5 × 104 s的耐久性测试，其质量活度仍保持在约274.9 mA mgPtPd-1（初始值的28.6%）。目前的工作不仅为长期燃料电池提供了一种先进的电催化剂，而且还为在2D支撑物上构建复杂的金属纳米复合材料提供了一种通用的途径，为各种能源相关的应用提供了巨大的潜力。
Fuel cells hold great promise for clean and sustainable energy, whereas their widespread commercialization strongly depends on the development of highly efficient and stable electrocatalysts. Herein, three-dimensional fluffy PtPd nanocorals (NCs) loaded on two-dimensional (2D) hexagonal boron nitride (h-BN) supports were successfully achieved by a simple one-step strategy based on ultraviolet (UV) laser-excited photochemical reaction. As for alcohol oxidation reaction, the h-BN/PtPd NCs with unique nanoporous surface provide more enhanced electrocatalytic performances than many previous nanocatalysts, owing to abundant active sites and plentiful charge-transfer channels formed on high electrode–electrolyte contact area. Especially, the mass activity of h-BN/PtPd NCs is about 962.8 mA mgPtPd–1 in methanol oxidation reaction in alkaline solution, which can be maintained at ∼274.9 mA mgPtPd–1 (28.6% of the initial one) even after a 5 × 104 s durability test. The present work not only offers an advanced electrocatalyst for long-term fuel cells but also provides a versatile route for construction of complex metallic nanocomposites on 2D supports, holding great potential for diverse energy-related applications.