Controlled synthesis of ZnS nanocombs by self-evaporation using ZnS nanobelts as source and substrates

Abstract

ZnS nanocombs were fabricated via a two-step growth method. By annealing Au coated ZnS nanobelts with the help of SnO 2 /C, comb-like nanostructures would be formed. In the absence of SnO 2 /C, Au coated ZnS nanobelts would be evaporated completely at the same temperature. As revealed by high resolution transmission microscopy, the growth direction of the ZnS nanobelts was [210] while that of the branches was [001], which epitaxially grew on the (00 AE 1) side surfaces of the ZnS nanobelts. Selfevaporation was used to explain the formation of the ZnS nanocombs. Photoluminescence spectrum reveals that the ZnS nanocombs had two emission bands at 570 and 635 nm.

Fabrication of ZnS/SnO nanowire/nanosheet hierarchical nanoheterostructure and its photoluminescence properties

“…7. The PL spectrum of ZnS nanowires is almost the same as that of the ZnS nanobelts reported in our previous paper, 25 showing two emission peaks centered at about 530 and 625 nm. The possible origins of the emission band at 530 nm in ZnS nanowires are the elemental sulfur species on the surface of the ZnS nanowires, 26 defects caused by Au impurities, 27,28 recombination of electrons from the energy level of sulfur vacancies with the holes from the energy level of zinc vacancies within the band gap, 29 line or planar defects of the ZnS nanowires, 30 etc.…”

Fabrication of ZnS Hollow Spheres and RGO-ZnS Nanocomposite Using Cysteamine as Novel Sulfur Source: Photocatalytic Performance on Industrial Dyes and Effluent

“…6−8 Other than oxides, metal chalcogenides have also created impressions as photocatalyst, and ZnS is an important example of this class of photocatalyst. ZnS has been tailor-made in various fascinating morphologies such as nanobelts, 9 stackedpyramid, 10 nanocombs, 11 spheres, 12,13 nanoflowers, 14 and so on to meet the demands of high-performance applications such as fungicides, 15 solar cells, 16 sensors, 17 and light-emitting diodes (LEDs), 18 photocatalysts, 19 and electro-optical devices, 20 among others. However, poor response to visible light and high recombination rate of excitons significantly confine its realistic uses.…”

Catalyst-assisted synthesis and growth mechanism of ultra-long single crystal α-Si3N4 nanobelts with strong violet–blue luminescent properties

“…For these reasons, in recent years, various types of nanobelts have been synthesized and some of their important properties and trial applications investigated. [6][7][8][9][10][11][12][13][14][15][16][17][18][19] Silicon nitride (Si 3 N 4 ) is an important material with many excellent thermal and mechanical properties. It is also a wide band gap (5.3 eV) semiconductor in which mid-gap energy levels can be introduced via doping an appropriate dopant to tailor its optoelectronic properties.…”