Integrating nitrogen-doped graphitic carbon with Au nanoparticles for excellent solar energy absorption properties

• Published in: Solar energy materials and solar cells Vol. 184; pp. 1 - 8
• Main Authors: Lingling, Wang, Guihua, Zhu, Wei, Yu, Jia, Zeng, Xiaoxiao, Yu, Qiang, Li, Huaqing, Xie
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01-09-2018; Elsevier BV
• Subjects: Absorption; Au nanoparticles; Carbon; Carbon nanotubes; Energy absorption; Gold; Metal-organic frameworks; Nanofluid; Nanofluids; Nanoparticles; Nanotechnology; Nanotubes; Near infrared radiation; Nitrogen; Nitrogen-doped graphitic carbon; Photo-thermal conversion efficiency; Photothermal conversion; Solar collectors; Solar energy; Surface chemistry; Surface plasmon resonance; Synergistic effect; Test procedures; Thermal energy; Working fluids; Nitrogen-doped graphitic carbon; Au nanoparticles; Nanofluid; Solar energy; Photo-thermal conversion efficiency
• ISSN: 0927-0248; 1879-3398
• DOI: 10.1016/j.solmat.2018.04.028

A novel excellent carbon-H2O nanofluid, nitrogen-doped graphitic carbon, has been discovered and prepared by using a facile metal-organic frameworks (MOFs) derived synthesis method. The obtained ZIF-8 (ZIF denotes zeolitic imidazolate framework) derived nitrogen-doped graphitic carbon (ZNG) analogs have high specific surface area of 580.2 m2 g−1 and show broad band absorption across the visible and near-infrared region. Au nanoparticles with the size of 2–5 nm are facilely and successfully deposited on the surface of nitrogen-doped graphitic carbon (Au/ZNG) via an impregnation-reduction method. The photothermal conversion tests indicate that both ZNG-H2O and Au/ZNG-H2O nanofluids show better photo-thermal performance and more awesome dispersion stability in water than conventional carbon nanofluids such as graphene and nitrogen-doped carbon nanotubes. Just as expected, Au/ZNG nanofluid shows obvious enhancement in photo-thermal performance due to the synergistic effect of the localized surface plasmon resonance (LSPR) Au nanoparticles and ZNG. This novel ZNG/water nanofluid is very attractive in working fluids for direct absorption solar collectors.
A novel excellent carbon-H2O nanofluid, nitrogen-doped graphitic carbon (ZNG), has been discovered and prepared by using a facile metal-organic frameworks (MOFs) derived synthesis method. The photothermal conversion tests indicate that ZNG shows better photo-thermal performance and more awesome dispersion stability in water than conventional carbon nanofluids such as graphene and nitrogen-doped carbon nanotubes. The excellent photo-thermal conversion efficiency is realized by integrating ZNG with Au nanoparticles. [Display omitted]
•A novel N-doped graphene-H2O nanofluid has been designed.•The ZNG nanofluid shows broad band absorption.•The ZNG nanfluid shows good photo-thermal performance and dispersion stability in water.•The excellent photo-thermal conversion efficiency is realized by integrating ZNG with Au nanoparticles.