A facile chemical synthesis of nanoflake NiS₂layers and their photocatalytic activity

Abstract

A single phase nanoflake NiS2 layer synthesized by a facile chemical bath deposition showed good solar light photocatalytic degradation of phenol with good stability and reusability.

Sulphur Assisted Nitrogen‐Rich CNF for Improving Electronic Interactions in Co‐NiO Heterostructures Toward Accelerated Overall Water Splitting

“…The peak at 162.3 eV is assigned to MS bonding and peak at 164.0 eV is assigned to CS species. [37,44] The S atoms are doped on the carbon matrix that creates the asymmetric charge density difference. This charge density difference improves the electronic conductivity of the carbon matrix, which enhance the activity of SCNO@N-CNF electrocatalyst.…”

Co Ion‐, NiS2‐ and CNT‐Co‐Doped Nanoflower/Hollow Spherical NiO Nanocomposites for Efficient Electrocatalytic Oxidation of Methanol

“…The introduction of S heteroatoms can also promote the performance of the catalysts through increasing adsorption of reactants, reducing the activation energy of the reaction, and participating in the absorption of toxic intermediates, promoting the kinetics of catalytic reactions [37] . Recently NiS 2 has been used for electrocatalysts [38–40] . because it can improve the charge transfer rate and provide a wealth of electrically active sites.…”

“…[37] Recently NiS 2 has been used for electrocatalysts. [38][39][40] because it can improve the charge transfer rate and provide a wealth of electrically active sites. The close coupling state of the heterojunction can simultaneously promote the diffusion process and contact interaction between methanol molecules and active sites.…”

Effect of Deposition Time on the Properties of NiS Films Prepared by Chemical Bath Deposition

“…NiS exhibits diverse phases with various stoichiometries such as NiS, NiS 2 , Ni 3 S 2 , Ni 3 S 4 , Ni 6 S 5, Ni 7 S 6, and Ni 9 S 8 . Among these phases, it mainly exists in two forms i.e hexagonal (α-NiS), which is stable at high temperatures, and rhombohedral (β -NiS) stable at low temperatures (6) . The hexagonal NiS is known for energy-related applications such as hydrogen evolution reactions, supercapacitors, dye-sensitized solar cells, and lithium-ion batteries (7,8) .…”

“…Paresh Gaikar et al (14) prepared NiS thin films on titanium substrate with additive free by using the chemical bath deposition method for pseudocapacitor application, where the XRD pattern showed polycrystalline nature having a crystalline size of 19 nm. Mohammad Gomma et al, synthesized NiS 2 nanoflake layers on a glass substrate by chemical bath deposition method followed by sulfurization process and reported the crystallite size was 26 nm, and optical properties showed a band gap of 1.19 eV (6) . In CBD, the deposition time is one of the most important factors that affect the release of anions and cations in a reaction bath, which leads to a phase change and variation in grain size along with surface roughness (15) .…”