三元运算
光催化
可见光谱
等离子体子
纳米颗粒
材料科学
光化学
表面等离子共振
电子
光电子学
纳米技术
化学
物理
催化作用
量子力学
生物化学
计算机科学
程序设计语言
作者
Qinqin Liu,Jinxin Huang,Xun Hu,Xiaohui Yu,Jingfang Sun,Hua Tang
出处
期刊:Solar RRL
[Wiley]
日期:2020-11-10
卷期号:5 (6)
被引量:54
标识
DOI:10.1002/solr.202000504
摘要
Exploiting active photocatalysts with broad spectrum light response is a priority target in the field of photocatalysis. Herein, integrating Au and CoO nanoparticles with g‐C 3 N 4 hollow nanotubes, a promising ternary photocatalyst with wide‐light spectrum response (420–650 nm) is designed, in which Au nanoparticles play the dual role of plasmonic electron donor and reduction cocatalyst, while CoO nanoparticles act as oxidation cocatalyst. The optimum H 2 evolution rates of the ternary hybrid reach 238.7 and 4.9 μmol under the irradiation of visible light and monochromic light of 650 nm, respectively. Localized surface plasmon resonance (LSPR) can promote charge‐carrier generation in the g‐C 3 N 4 , and the appropriate band alignment between the Au and g‐C 3 N 4 is favorable for hot electron transfer from Au to g‐C 3 N 4 , which makes this ternary hybrid possess extra hot electrons for water reduction reaction under a wider solar spectrum. Furthermore, Au as a reduction cocatalyst and CoO as an oxidation cocatalyst can effectively impel the charge separation and restrain charge recombination, which is also responsible for the enhanced photocatalytic activity. This work affords a credible strategy for the rational construction of plasmon‐assisted photocatalysts for the wider‐spectrum appliance of solar energy.
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