Enhanced solar energy absorption on nitrogen-doped carbon nanotubes decorated with gold-palladium bimetallic nanoparticles | Zendy

Lingling Wang | Zendy; Guihua Zhu | Zendy; Long Shen | Zendy; Wei Yu | Zendy; Dahai Zhu | Zendy; Yingchun Zhang | Zendy; Liye Zhang | Zendy; Huaqing Xie | Zendy

Open Access

Enhanced solar energy absorption on nitrogen-doped carbon nanotubes decorated with gold-palladium bimetallic nanoparticles

Author(s) -

Lingling Wang,

Guihua Zhu,

Long Shen,

Wei Yu,

Dahai Zhu,

Yingchun Zhang,

Liye Zhang,

Huaqing Xie

Publication year - 2018

Publication title -

thermal science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.339

H-Index - 43

eISSN - 2334-7163

pISSN - 0354-9836

DOI - 10.2298/tsci170620055w

Subject(s) - materials science , carbon nanotube , bimetallic strip , nanofluid , nucleation , nanoparticle , chemical engineering , absorption (acoustics) , palladium , alloy , nanotechnology , composite material , catalysis , metal , metallurgy , organic chemistry , chemistry , engineering

Gold-palladium alloy nanoparticles decorated on nitrogen-doped carbon nanotubes (Au-Pd/N-CNT) were prepared by using polyethylene imine reduction method. Polyethylene acts as not only a stabilizing agent, but also a reducing agent, leading to nucleation and growth of nanoparticles on the N-CNT surfaces. All the N-CNT-based nanofluids show broadband absorption across the visible region and near infrared region. The Au-Pd/N-CNT nanofluids absorb more solar irradiation compared with monometallic Pd/N-CNT or Au/N-CNT nanofluid. The photo-thermal conversion efficiency of Au-Pd /N-CNT nanofluids is 62.3%, compared with 53.3% and 57% for Pd/N-CNT and Au/N-CNT, respectively. This enhancement was mainly due to the synergetic effects of N-CNT and Au-Pd alloy nanoparticles.

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