Enhanced catalytic activity of one-dimensional CdS @TiO2 core-shell nanocomposites for selective organic transformations under visible LED irradiation

Eskandari, Parvin; Zand, Zahra; Kazemi, Foad; Ramdar, Moosa

doi:10.1016/j.jphotochem.2021.113404

Cited by 10 publications

(3 citation statements)

References 82 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To further understand the probable mechanism of RhB dye degradation, the photocatalytic reactions were additionally carried out with the assistance of scavengers to confirm the role of the primary active species involved in the degradation process (Figure h). Various scavenging reagents for the above similar experimental setup were employed such as benzoquinone (BQ) to quench photogenerated superoxide radicals (O 2 •– ), silver nitrate (AgNO 3 ) to quench photogenerated electrons (e – ), sodium oxalate (Na 2 C 2 O 4 ) to quench photogenerated holes (h + ), and t -butyl hydroxide to quench hydroxyl radicals ( • OH). − In the presence of Na 2 C 2 O 4 , the rate of photocatalytic degradation of RhB decreases noticeably to 11%. This may be caused by the effective scavenging of the photogenerated holes from the SA–CdS, which produces • OH from the hydroxyl ions.…”

Section: Resultsmentioning

confidence: 99%

Sodium Alginate–CdS Nanostructures: Reinforcing Chemoselectivity in Nitro-Organic Reduction and Dye Degradation through Photoinduced Electron Transfer

Dhruv,

Kori,

Das

2024

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

In the current socioeconomic environment, researchers are interested in using visible light for the exploration of chemical reactions. In this context, biopolymer-supported multifunctional metal sulfide composites with improved catalytic performance play a crucial role in chemical reactions. To address this issue, sodium alginate-templated cadmium sulfide-based photocatalysts are synthesized at a gel−liquid interface by altering the pH of the Na 2 S solution from 7.4 to 10 and 13. The X-ray diffractograms (XRDs) of the synthesized sodium alginate− cadmium sulfide (SA−CdS) illustrated the semicrystalline nature of the cadmium nanostructures. Field emission scanning electron microscopy (FE-SEM) is used to examine the surface morphology of the nanocomposites. The transmission electron microscopy (TEM) analysis reveals that the sodium alginate−cadmium sulfide (SA−CdS) particles exhibit spherical shapes with an average size of 4 nm. The diffuse reflectance spectroscopy (DRS) and Brunauer−Emmett−Teller (BET) analysis reveal the low band gap (∼2.4 eV) and enhanced surface area for SA−CdS synthesized at pH 13 of Na 2 S solution compared to pH 10 and 7.4, respectively. In contrast to the reported photocatalysts, the synthesized SA−CdS not only reduced the nitro-organic compounds under incoming irradiation but also reduced the chemoselectively deteriorated nitro compounds having vinyl functional groups. Additionally, the SA−CdS photocatalyst efficiently degraded organic rhodamine B (RhB) dye under visible light irradiation. Additionally, the essential function of electrons in reducing nitroaryl compounds is revealed, and a potential photocatalytic reaction mechanism using ammonium formate as a hole scavenger is also proposed. The synthesized SA−CdS catalyst demonstrates remarkable recyclability without any noticeable decrease in the amount of product obtained. These findings suggest that the developed SA−CdS catalyst has the potential to serve as a promising visible-light-driven photocatalyst for various organic reactions.

show abstract

Section: Resultsmentioning

confidence: 99%

Sodium Alginate–CdS Nanostructures: Reinforcing Chemoselectivity in Nitro-Organic Reduction and Dye Degradation through Photoinduced Electron Transfer

Dhruv,

Kori,

Das

2024

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

show abstract

“…It highlights the enhanced efficacy, photocatalytic activity and stability of the doped material compared to the pristine form. 87 The oxidation chemistry of TiO 2 is quite rich as well and can take place in the presence of UV as well as visible light irradiation. In this regard, it was observed that the selective aerobic oxidation of alcohols could take place by double electron transfer (wherein O 2 acts as the electron scavenger) or by the oxygen transfer mechanism (Fig.…”

Section: Transition Metal Chalcogenides (Tmcs)mentioning

confidence: 99%

“…It highlights the enhanced efficacy, photocatalytic activity and stability of the doped material compared to the pristine form. 87…”

Section: Nanomaterials In Photo-mediated Organic Transformationsmentioning

confidence: 99%

Nanomaterials in photocatalysed organic transformations: development, prospects and challenges

Jaiswal

Mahanta

2023

Chem. Commun.

View full text Add to dashboard Cite

show abstract

Influence of manganese concentration on photoelectrochemical response of TiO2 nanotube decorated with Mn/CdS as photoanode

Ayal

Farhan

Holi

et al. 2023

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

Enhanced catalytic activity of one-dimensional CdS @TiO2 core-shell nanocomposites for selective organic transformations under visible LED irradiation

Cited by 10 publications

References 82 publications

Sodium Alginate–CdS Nanostructures: Reinforcing Chemoselectivity in Nitro-Organic Reduction and Dye Degradation through Photoinduced Electron Transfer

Sodium Alginate–CdS Nanostructures: Reinforcing Chemoselectivity in Nitro-Organic Reduction and Dye Degradation through Photoinduced Electron Transfer

Nanomaterials in photocatalysed organic transformations: development, prospects and challenges

Influence of manganese concentration on photoelectrochemical response of TiO2 nanotube decorated with Mn/CdS as photoanode

Contact Info

Product

Resources

About