Enhancement of photocatalytic H₂ production activity of CdS nanorods by cobalt-based cocatalyst modification

Abstract

The excellent photocatalytic H2 production activity of Co3O4–CdS nanocomposite was mainly attributed to the formation of p–n heterojunctions between the p-type Co3O4 nanoclusters and n-type CdS nanorods, which could promote the photoinduced charge transfer and separation.

One‐Step Solid‐Phase Synthesis of 2D Ultrathin CdS Nanosheets for Enhanced Visible‐Light Photocatalytic Hydrogen Evolution

“…The UV–Vis diffuse absorption spectra of the prepared samples (CdS‐180 °C‐4 h, CdS‐250 °C‐4 h, CdS‐300 °C‐4 h, CdS‐350 °C‐4 h, CdS‐400 °C‐4 h, CdS‐500 °C‐4 h, and CdS nanorod) are shown in Figure (a), wherein CdS nanorod shows a significant absorption edge at ≈530 nm, which is associated with the intrinsic band gap in the literature . For the series of CdS samples formed by the one‐step solid‐phase method, CdS‐180 °C‐4 h showed an enhanced absorption at about 560 nm.…”

One‐Pot Synthesis of Size‐Controllable Core–Shell CdS and Derived CdS@ZnxCd1−xS Structures for Photocatalytic Hydrogen Production

“…This can be attributed to the protection of the Zn x Cd 1− x S shell. ZnS is not a desirable photocatalyst for water splitting in response to visible light, but the participation of ZnS or Zn x Cd 1− x S can play a crucial role in efficiently inhibiting the recombination of photogenerated electron–hole pairs and improving photocatalytic H 2 evolution, and even acts as a shield layer protecting the CdS core against photocorrosion . The comparison of our CdS@Zn x Cd 1− x S with other related photocatalysts is summarized in Table S1 of the Supporting Information.…”

“…As a significant member of the family of II–VI semiconductor materials, cadmium sulfide (CdS) has attracted huge interest for broad application in the fields of photocatalysis, optoelectronics, photovoltaics, and chemical sensors owing to its remarkable photochemical and luminescence properties . Till now, CdS nanomaterials with various morphologies have been reported, such as 0D quantum dots and 1D nanorods and nanowires . Besides, distinct CdS micro/nanostructures have also been a research hotspot due to their superiority over nano building blocks.…”

“…[18][19][20] Till now,C dS nanomaterials with various morphologies have been reported, such as 0D quantum dots [21,22] and 1D nanorods and nanowires. [23][24][25] Besides, distinct CdS micro/nanostructures have also been ar esearch hotspot due to their superiority over nano buildingb locks. One such advantage is that assemblies of nanocrystals can effectively preventt he aggregation of free-standing nanocrystals and maintain stabilityi nh eterogeneousc atalysis.…”

Construction of dual-channel for optimizing Z-scheme photocatalytic system

“…The diffraction peaks for all samples match well with the pure monoclinic phase of BiVO 4 corresponding to the JCPDS No. 75-1866, indicating that the introduction of Au and CdS does not change the crystal phase and crystallinity of BiVO 4 , which may be attributed to the low content of Au and CdS [37,38] . More evidences of existing Au and CdS have been given in other characters.…”