Effect of the indium sulfide phase in CuInS2-TiO2 photocatalysts to boost hydrogen evolution by water splitting
The purpose of this study is to develop a visible light responsive photocatalyst that can remove such environmental pollutants as polysulfide anions and simultaneously generate clean hydrogen energy. An environmentally friendly copper indium sulfide (CuInS2, CIS) nano-colloid was synthesized in aque...
Saved in:
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-12-01
|
| Series: | Materials Today Catalysis |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2949754X24000425 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850118946842214400 |
|---|---|
| author | Mizuki Inada Shizuki Yase Atsune Tada Takuma Yamane Yuki Miyaji Masanari Hirahara Yoshiyuki Harada Syuji Fujii Takashi Fukushima Satoru Dohshi Shinya Higashimoto |
| author_facet | Mizuki Inada Shizuki Yase Atsune Tada Takuma Yamane Yuki Miyaji Masanari Hirahara Yoshiyuki Harada Syuji Fujii Takashi Fukushima Satoru Dohshi Shinya Higashimoto |
| author_sort | Mizuki Inada |
| collection | DOAJ |
| description | The purpose of this study is to develop a visible light responsive photocatalyst that can remove such environmental pollutants as polysulfide anions and simultaneously generate clean hydrogen energy. An environmentally friendly copper indium sulfide (CuInS2, CIS) nano-colloid was synthesized in aqueous medium for the design of such a photocatalyst. Characterization of the hydrophilic CIS with different In/Cu ratios were studied by XRD, Raman, UV-Vis, photoluminescence spectroscopy. These results showed that the long-lived photoexcited electrons in the CIS with higher In/Cu ratio can be expected to achieve efficient interaction with the reactant molecules. On the photocatalytic activity of CIS, the effect of such various supports as TiO2, and In/Cu ratio of CIS on the reaction promotion was examined. The CIS deposited TiO2 (CIS-TiO2) showed higher photocatalytic activity than bulk CIS, and the indium sulfide-richer CIS-TiO2 showed better performance. The indium sulfide moiety participates in the compensation of the defect sites in the CIS as well as the interaction between In-rich CIS and TiO2 can achieve effective charge carrier separation. This is the first report finding that the indium-richer CuInS2 plays an important role in an improvement of the photocatalytic activity. |
| format | Article |
| id | doaj-art-d26f7be7cc6f44bab6a3de727b04a047 |
| institution | OA Journals |
| issn | 2949-754X |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials Today Catalysis |
| spelling | doaj-art-d26f7be7cc6f44bab6a3de727b04a0472025-08-20T02:35:44ZengElsevierMaterials Today Catalysis2949-754X2024-12-01710008010.1016/j.mtcata.2024.100080Effect of the indium sulfide phase in CuInS2-TiO2 photocatalysts to boost hydrogen evolution by water splittingMizuki Inada0Shizuki Yase1Atsune Tada2Takuma Yamane3Yuki Miyaji4Masanari Hirahara5Yoshiyuki Harada6Syuji Fujii7Takashi Fukushima8Satoru Dohshi9Shinya Higashimoto10Faculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi-ku, Osaka 535-8585, JapanFaculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi-ku, Osaka 535-8585, JapanFaculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi-ku, Osaka 535-8585, JapanFaculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi-ku, Osaka 535-8585, JapanFaculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi-ku, Osaka 535-8585, JapanFaculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi-ku, Osaka 535-8585, JapanNanomaterials Microdevices Research Center, Osaka Institute of Technology, 5-16-1 Omiya, Asahi-ku, Osaka 535-8585, JapanFaculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi-ku, Osaka 535-8585, JapanFaculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi-ku, Osaka 535-8585, JapanOsaka Research Institute of Industrial Science and Technology, 7-1, Ayumino-2, Izumi-city, Osaka 594-1157, JapanFaculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi-ku, Osaka 535-8585, Japan; Corresponding author.The purpose of this study is to develop a visible light responsive photocatalyst that can remove such environmental pollutants as polysulfide anions and simultaneously generate clean hydrogen energy. An environmentally friendly copper indium sulfide (CuInS2, CIS) nano-colloid was synthesized in aqueous medium for the design of such a photocatalyst. Characterization of the hydrophilic CIS with different In/Cu ratios were studied by XRD, Raman, UV-Vis, photoluminescence spectroscopy. These results showed that the long-lived photoexcited electrons in the CIS with higher In/Cu ratio can be expected to achieve efficient interaction with the reactant molecules. On the photocatalytic activity of CIS, the effect of such various supports as TiO2, and In/Cu ratio of CIS on the reaction promotion was examined. The CIS deposited TiO2 (CIS-TiO2) showed higher photocatalytic activity than bulk CIS, and the indium sulfide-richer CIS-TiO2 showed better performance. The indium sulfide moiety participates in the compensation of the defect sites in the CIS as well as the interaction between In-rich CIS and TiO2 can achieve effective charge carrier separation. This is the first report finding that the indium-richer CuInS2 plays an important role in an improvement of the photocatalytic activity.http://www.sciencedirect.com/science/article/pii/S2949754X24000425Visible-light responsive photocatalystCopper indium sulfide (CuInS2, CIS)Indium sulfideSolar hydrogen |
| spellingShingle | Mizuki Inada Shizuki Yase Atsune Tada Takuma Yamane Yuki Miyaji Masanari Hirahara Yoshiyuki Harada Syuji Fujii Takashi Fukushima Satoru Dohshi Shinya Higashimoto Effect of the indium sulfide phase in CuInS2-TiO2 photocatalysts to boost hydrogen evolution by water splitting Materials Today Catalysis Visible-light responsive photocatalyst Copper indium sulfide (CuInS2, CIS) Indium sulfide Solar hydrogen |
| title | Effect of the indium sulfide phase in CuInS2-TiO2 photocatalysts to boost hydrogen evolution by water splitting |
| title_full | Effect of the indium sulfide phase in CuInS2-TiO2 photocatalysts to boost hydrogen evolution by water splitting |
| title_fullStr | Effect of the indium sulfide phase in CuInS2-TiO2 photocatalysts to boost hydrogen evolution by water splitting |
| title_full_unstemmed | Effect of the indium sulfide phase in CuInS2-TiO2 photocatalysts to boost hydrogen evolution by water splitting |
| title_short | Effect of the indium sulfide phase in CuInS2-TiO2 photocatalysts to boost hydrogen evolution by water splitting |
| title_sort | effect of the indium sulfide phase in cuins2 tio2 photocatalysts to boost hydrogen evolution by water splitting |
| topic | Visible-light responsive photocatalyst Copper indium sulfide (CuInS2, CIS) Indium sulfide Solar hydrogen |
| url | http://www.sciencedirect.com/science/article/pii/S2949754X24000425 |
| work_keys_str_mv | AT mizukiinada effectoftheindiumsulfidephaseincuins2tio2photocatalyststoboosthydrogenevolutionbywatersplitting AT shizukiyase effectoftheindiumsulfidephaseincuins2tio2photocatalyststoboosthydrogenevolutionbywatersplitting AT atsunetada effectoftheindiumsulfidephaseincuins2tio2photocatalyststoboosthydrogenevolutionbywatersplitting AT takumayamane effectoftheindiumsulfidephaseincuins2tio2photocatalyststoboosthydrogenevolutionbywatersplitting AT yukimiyaji effectoftheindiumsulfidephaseincuins2tio2photocatalyststoboosthydrogenevolutionbywatersplitting AT masanarihirahara effectoftheindiumsulfidephaseincuins2tio2photocatalyststoboosthydrogenevolutionbywatersplitting AT yoshiyukiharada effectoftheindiumsulfidephaseincuins2tio2photocatalyststoboosthydrogenevolutionbywatersplitting AT syujifujii effectoftheindiumsulfidephaseincuins2tio2photocatalyststoboosthydrogenevolutionbywatersplitting AT takashifukushima effectoftheindiumsulfidephaseincuins2tio2photocatalyststoboosthydrogenevolutionbywatersplitting AT satorudohshi effectoftheindiumsulfidephaseincuins2tio2photocatalyststoboosthydrogenevolutionbywatersplitting AT shinyahigashimoto effectoftheindiumsulfidephaseincuins2tio2photocatalyststoboosthydrogenevolutionbywatersplitting |