TY - JOUR
TI - Enhanced solar energy absorption on nitrogen-doped carbon nanotubes decorated with gold-palladium bimetallic nanoparticles
AU - Wang Lingling
AU - Zhu Guihua
AU - Shen Long
AU - Yu Wei
AU - Zhu Dahai
AU - Zhang Yingchun
AU - Zhang Liye
AU - Xie Huaqing
JN - Thermal Science
PY - 2018
VL - 22
IS - 12
SP - 701
EP - 708
PT - Article
AB - Gold-palladium alloy nanoparticles decorated on nitrogen-doped carbon  nanotubes (Au-Pd/N-CNTs) were prepared by using poly ethylene imine (PEI)  reduction method. PEI acts as not only a stabilizing agent, but also a  reducing agent, leading to nucleation and growth of nanoparticles (NPs) on  the NCNTs surfaces. All the N-CNTs-based nanofluids show broadband absorption  across the visible region and near-infrared region. The Au-Pd/N-CNTs  nanofluids absorb more solar irradiation compared with monometallic Pd/N-CNTs  or Au/N-CNTs nanofluid. The photothermal conversion efficiency of  Au-Pd/N-CNTs nanofluids is 62.3%, compared with 53.3% and 57% for Pd/N-CNTs  and Au/N-CNTs respectively. This enhancement was mainly due to the synergetic  effects of N-CNTs and Au-Pd alloy NPs.