Search
Capping ligand initiated CuInS2 quantum dots decoration on, ZnIn2S4 microspheres surface under different alkalinity levels resulting in different hydrogen evolution performance
Abstract
Surface distribution of quantum dots (QDs) at the semiconductor matrix caused by synthesis condition (e.g. pH of solution during coupling) could lead to different photocatalytic activity. Thus, achieving an optimal covering of semiconductor matrix by QDs has been challenging. Herein, the influence of the alkalinity level of aqueous decoration medium for the coupling of mercaptoundecanoic acid (MUA) capped CuInS2 quantum dots (CIS) and ZnIn2S4 microspheres (ZIS) on photocatalytic hydrogen evolution (PHE) performance was investigated. Aqueous decoration medium with different alkalinity levels for the formation of ZIS/CIS photocatalytic system resulted in significantly different PHE performances in the presence of (0.5 wt%) Pt co-catalyst deposition without any change in crystal structure of ZIS matrix up to pH 12.5. The photocatalytic system obtained at pH 10.5 possessed the highest performance followed by the decrease at pH 11.5 and again the remarkable increase was detected at pH 12.5 that was the pH level for uniform dispersion of CIS in aqueous medium. This work remarks the importance of the nanoparticle’s aggregates on PHE performance over non-toxic ZnIn2S4/CuInS2 photocatalytic system.
Citations
-
9
CrossRef
-
0
Web of Science
-
1 0
Scopus
Authors (7)
-
Onur Cavdar
-
Anna Malankowska
-
Andrzej Żak
-
Wojciech Lisowski dr hab.
-
Adriana Zaleska-Medynska Prof. dr hab. inż.
Cite as
Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.colsurfa.2022.129760
- License
-
open in new tab
Keywords
Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
no. 652,
ISSN: 0927-7757 - Language:
- English
- Publication year:
- 2022
- Bibliographic description:
- Cavdar O., Malankowska A., Łuczak J., Żak A., Lisowski W., Klimczuk T., Zaleska-Medynska A.: Capping ligand initiated CuInS2 quantum dots decoration on, ZnIn2S4 microspheres surface under different alkalinity levels resulting in different hydrogen evolution performance// COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS -,iss. 652 (2022), s.129760-
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.colsurfa.2022.129760
- Verified by:
- Gdańsk University of Technology
seen 127 times
Recommended for you
Remarkable visible-light induced hydrogen generation with ZnIn2S4 microspheres/CuInS2 quantum dots photocatalytic system
- O. Cavdar,
- A. Malankowska,
- D. Amgar
- + 4 authors
Synergy between AgInS2 quantum dots and ZnO nanopyramids for photocatalytic hydrogen evolution and phenol degradation
- M. C. Nevárez Martínez,
- B. Bajorowicz,
- T. Klimczuk
- + 4 authors
Experimental and DFT insights into an eco-friendly photocatalytic system toward environmental remediation and hydrogen generation based on AgInS2 quantum dots embedded on Bi2WO6
- P. Parnicka,
- A. Mikolajczyk,
- H. P. Pinto
- + 5 authors
Stannates, titanates and tantalates modified with carbon and graphene quantum dots for enhancement of visible-light photocatalytic activity
- M. Paszkiewicz-Gawron,
- K. Ewa,
- M. Endo-Kimura
- + 7 authors