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author:

Abraham, Daniel Arulraj (Abraham, Daniel Arulraj.) [1] | Rajan, Aswathy (Rajan, Aswathy.) [2] | Dhileepan, M.D. (Dhileepan, M.D..) [3] | Anpo, Masakazu (Anpo, Masakazu.) [4] | Neppolian, Bernaurdshaw (Neppolian, Bernaurdshaw.) [5]

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Abstract:

We have developed a strategy to prevent the photo-corrosion of cadmium sulfide nanorods (CdSNRs) by coating them with cerium sulfide (Ce2S3) as co-catalyst and N-doped Graphene (NG) for a solar light-driven H2 production application. The uniform deposition and coating of Ce2S3 and NG over the CdSNRs were confirmed by both FESEM and HRTEM analyses. The incorporation of Ce2S3 and NG into CdSNRs not only increased its stability but also extended its absorption in visible and NIR regions. As a result, the prepared CdSNRs/Ce2S3 photocatalysts produced ∼16,181 µmol h−1 g–1 of H2 under solar light irradiation, which was ∼ 10 times higher than the pure CdSNRs. Interestingly, N atom doped graphene-supported CdSNRs/Ce2S3 photocatalysts has shown a paramount effect on the H2 production by 24 times higher compared to bare CdSNRs (35,946 µmol h−1g–1). In addition, the NG-CdSNRs/Ce2S3 photocatalysts exhibited high stability up to 5 continuous cycles. The high stability was achieved due to the covering of CdSNRs by Ce2S3 and NG, which may effectively prevent the leaching out of S2- ions from CdSNRs. On the other hand, the NG played a dual role by preventing the photo-corrosion and also improving the charge carrier separation as evidenced by the PL, TRPL, and Impedance studies. The present work may open a new direction in designing a highly photostable metal sulfide photocatalyst for energy conversion applications in aqueous medium. © 2023 Elsevier B.V.

Keyword:

Cadmium sulfide Cerium compounds Doping (additives) Graphene Hydrogen production II-VI semiconductors Image enhancement Nanorods Solar light Solar power generation

Community:

  • [ 1 ] [Abraham, Daniel Arulraj]School of Engineering, Cardiff University, Cardiff, United Kingdom
  • [ 2 ] [Rajan, Aswathy]Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, Chennai; 603203, India
  • [ 3 ] [Dhileepan, M.D.]Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Chennai; 603203, India
  • [ 4 ] [Anpo, Masakazu]Department of Applied Chemistry Graduate School of Engineering, Osaka Prefecture University (now, Osaka Metropolitan University), Osaka, Sakai; 599-8531, Japan
  • [ 5 ] [Anpo, Masakazu]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fujian, Fuzhou; 350116, China
  • [ 6 ] [Neppolian, Bernaurdshaw]Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, Chennai; 603203, India

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Source :

Catalysis Today

ISSN: 0920-5861

Year: 2023

Volume: 423

5 . 2

JCR@2023

5 . 2 0 0

JCR@2023

ESI HC Threshold:39

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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