Template-directed synthesis of pyrite (FeS₂) nanorod arrays with an enhanced photoresponse

Abstract

Well-aligned ZnO nanorod arrays were used as templates to produce Fe(OH)3nanotube arrays. The as-grown Fe(OH)3nanotube arrays were then used as templates to obtain an FeS2nanorod array. The FeS2nanorod arrays had much better photovoltaic properties than the FeS2nanoparticles due to the high specific area, direct transport pathways and enhanced light harvesting of the nanorod array structure.

An efficient precursor to synthesize various FeS2nanostructures via a simple hydrothermal synthesis method

“…This condition indicates that the peaks are in good agreement with the iron binding energy of bulk pyrite. A weak Fe 2p 3/2 satellite peak is shown in the XPS spectra of irregular nanocrystals [19,38]. In Fig.…”

“…For example, Wang et al designed a novel template-directed method to synthesize successfully one-dimensional wellaligned pyrite nanorods, which were grown on an fluorinedoped tin oxide (FTO) conductive glasses using ZnO nanorod arrays as the template [19]. The unique architecture has a large surface area for light harvesting to enhance the photoresponsive properties of pyrite.…”

Morphology controllable syntheses of micro- and nano-iron pyrite mono- and poly-crystals: a review

“…7a and b). In Wang et al's report, 121 ZnO nanorod arrays were used as the initial template h As triethyleneglycol. to produce Fe(OH) 3 nanotube arrays and then the Fe(OH) 3 nanotube arrays were used as a template to produce the nal iron pyrite nanorod arrays ( Fig.…”

Synthesis of FeS2 (pyrite) nanotube through sulfuration of Fe2O3 nanotube

“…The excellent absorption performance of the FeS 2 nanotube could be attributed to the morphology of nanotube. The nanotube array has larger surface area which could effectively increase the diffusion rate of sulfur atoms and complete the sulfuration, eventually leading to the better optical property than the FeS 2 micro-particles mixed with FeS or Fe 1 À x S [17]. In addition, compared with micro-particles, the nanotubes with hollow tubular structure could enable more lights to be irradiated inside the cavity and promote the light refraction [18] as well as the subsurface scattering [19], therefore, the absorption was increased.…”