光催化
材料科学
异质结
纳米颗粒
量子点
化学工程
复合数
纳米技术
等离子体子
光化学
化学气相沉积
可见光谱
电子转移
光电子学
化学
催化作用
复合材料
有机化学
工程类
作者
Muhammad Salman Nasir,Guorui Yang,Iqra Ayub,Silan Wang,Wei Yan
标识
DOI:10.1016/j.apsusc.2020.146208
摘要
The hybrid 1D branched TiO2 loaded with surface plasmonic Au and decorated with g-C3N4 QDs were successfully fabricated which played a significant role in photocatalysis. The 1D branched TiO2 prepared by electrospinning followed by an alkali-hydrothermal process. The Au particles decorated by photo deposition and after that g-C3N4 QDs were grafted over it by a chemical vapor deposition method. The composite shows great improvement in photocatalytic hydrogen evolution and evolved about 2.22 mmol g−1 h−1 hydrogen. The composite sample has a quantum efficiency of 19.5% for hydrogen production at 420 nm light that depicts the performance behavior of the composite. The 1D branched TiO2 fiber facilitates the fast transfer of electrons and Au reduces the charge recombination due to its surface plasmonic effect while g-C3N4 QDs facilitate the visible light absorption by improving the optical properties and reduces the bandgap. The formation of the type II heterostructure system remarkably promotes the separation and transfer of electron holes and facilitates the photo-reduction reaction.
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