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Au-Decorated CoOOH Nanoplate Hierarchical Hollow Structure for Plasmon-Enhanced Electrocatalytic Water Oxidation
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2019-12-26 00:00:00 , DOI: 10.1021/acsaem.9b01976 Shiqiang Feng 1, 2 , Lanlan Yang 1 , Zhenzhen Zhang 1, 3 , Qi Li 1 , Dongsheng Xu 1
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2019-12-26 00:00:00 , DOI: 10.1021/acsaem.9b01976 Shiqiang Feng 1, 2 , Lanlan Yang 1 , Zhenzhen Zhang 1, 3 , Qi Li 1 , Dongsheng Xu 1
Affiliation
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The development of efficient oxygen evolution reaction (OER) catalysts is essential for the generation of renewable hydrogen. Cobalt-based catalytic material has been widely studied as a very promising metal catalyst. However, it is difficult for single simple-type cobalt-based catalysis to meet the requirement of activity. Composite material and auxiliary methods have been used to improve catalytic activity. Herein, a gold-nanoparticle-decorated CoOOH nanoplate hierarchical hollow structure (Au/CoOOH) is designed to improve the electrocatalytic performance of water oxidation. Moreover, a photoinduced surface plasmon excited on gold nanoparticles is also introduced to further enhance the photoassisted OER activity. The synergy of Au and CoOOH improves the charge excitation and transfer, which increase the number of active sites markedly. A high turnover frequency (3.75 s–1 at an overpotential of 360 mV) and a low overpotential of 290 mV at a current density of 10 mA cm–2 have been achieved with the assistance of a laser. Furthermore, the monochromatic incident photon-to-electron conversion efficiency (IPCE) can reach up to 5%.
中文翻译：
等离子体增强电催化水氧化的Au装饰CoOOH纳米板分层空心结构
高效氧释放反应（OER）催化剂的开发对于产生可再生氢至关重要。钴基催化材料已被广泛研究为非常有前途的金属催化剂。然而，单一的简单类型的基于钴的催化难以满足活性的要求。复合材料和辅助方法已用于改善催化活性。在此，设计了一种金纳米颗粒修饰的CoOOH纳米板分层空心结构（Au / CoOOH），以提高水氧化的电催化性能。此外，还引入了在金纳米颗粒上激发的光致表面等离子体激元，以进一步增强光辅助的OER活性。Au和CoOOH的协同作用改善了电荷的激发和转移，从而显着增加了活性位点的数量。在激光的辅助下已实现–1在360 mV的超电势下）和290 mV在200 mA的电流密度下的低超电势–2。此外，单色入射光子至电子的转换效率（IPCE）可以达到5％。
更新日期：2019-12-26
中文翻译：
等离子体增强电催化水氧化的Au装饰CoOOH纳米板分层空心结构
高效氧释放反应（OER）催化剂的开发对于产生可再生氢至关重要。钴基催化材料已被广泛研究为非常有前途的金属催化剂。然而，单一的简单类型的基于钴的催化难以满足活性的要求。复合材料和辅助方法已用于改善催化活性。在此，设计了一种金纳米颗粒修饰的CoOOH纳米板分层空心结构（Au / CoOOH），以提高水氧化的电催化性能。此外，还引入了在金纳米颗粒上激发的光致表面等离子体激元，以进一步增强光辅助的OER活性。Au和CoOOH的协同作用改善了电荷的激发和转移，从而显着增加了活性位点的数量。在激光的辅助下已实现–1在360 mV的超电势下）和290 mV在200 mA的电流密度下的低超电势–2。此外，单色入射光子至电子的转换效率（IPCE）可以达到5％。
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