CdS based 3D nano/micro-architectures: formation mechanism, tailoring of visible light activities and emerging applications in photocatalytic H₂ production, CO₂ reduction and organic pollutant degradation

Abstract

Semiconductor photocatalyst nanomaterials are being extensively studied for last a few decades due to their great potentials in solving energy and environmental problems on the earth by harnessing solar light....

La/Fe bimetallic MOF-derived p-LaFeO3/n-CdS heterojunction: efficient photocatalytic degradation of organic contaminants and adsorption isotherms

“…38 Fig. 1b shows the Tauc plot between (ahn) 2 and hn corresponding to Fig. 1a, where the straight line of the curve on the x-axis (hn) was extrapolated to determine the bandgap energy (E g ) values of all the synthesized materials.…”

“…In addition, highly toxic intermediates such as aromatic amines are produced, which lead to adverse effects on humans and animals. 2–4 To overcome these issues, various techniques have been applied. Among them, photocatalysis employing semiconducting materials is considered a promising and eco-friendly treatment approach for the removal of toxic organic and inorganic pollutants.…”

Bimetallic nitride NiMoN loaded on graphitic carbon nitride for plasmon-enhanced visible light-driven photocatalytic hydrogen evolution from water splitting

“…7,8 Semiconductor-based photocatalytic materials for H 2 generation under visible light irradiation have gradually attracted the attention of researchers. 9,10 Regarding the design of semiconductor photocatalysts, various materials, including TiO 2 , 11–13 ZnO, 14 and CdS, 15,16 have been studied, which stand out as emerging photocatalysts for H 2 performance and visible light response. However, these photocatalysts suffer from some drawbacks such as complex preparation processes, high cost, low photocatalytic activity, and recyclability problems that limit their widespread applications in the photocatalytic H 2 generation field.…”

Construction of ZnxCdyS with a 3D Hierarchical Structure for Enhanced Photocatalytic Hydrogen Production from Water Splitting

“…28,29 A 3D hierarchical structure can not only promote the absorption and utilization of light but also provide more active sites for the reaction due to its reflection effect and large specific surface area. 30,31 Metal−organic frameworks (MOFs), one of the representative materials with a large specific surface area, are ideal materials for photocatalysts because of their adjustable structure. 32 However, the catalytic performance of MOFs is easily affected by the solvent and temperature, which limit their development to a certain extent.…”

“…The type of semiconductor catalyst can only determine the lower limit of photocatalytic activity, while the upper limit of photocatalytic activity is limited by the microstructure (crystal form, crystal face, and surface defects), − macroscopic morphology (surface morphology and core–shell/hollow structure), , and heterostructure of the catalyst. , A 3D hierarchical structure can not only promote the absorption and utilization of light but also provide more active sites for the reaction due to its reflection effect and large specific surface area. , Metal–organic frameworks (MOFs), one of the representative materials with a large specific surface area, are ideal materials for photocatalysts because of their adjustable structure . However, the catalytic performance of MOFs is easily affected by the solvent and temperature, which limit their development to a certain extent .…”