TY - JOUR
T1 - Photocatalytic Hydrogen Production Using Fe-Graphene/TiO2 Photocatalysts in the Presence of Polyalcohols as Sacrificial Agents
AU - Naimah, Muto
AU - Pratama, Farashinta Dellarosa Nanda
AU - Ibadurrohman, Muhammad
N1 - Funding Information:
This research was financially supported by the Directorate of Research and Community Engagement Universitas Indonesia (DRPM UI) through International Indexed Publication Grant (PUTI Saintekes 2020) with Contract Number:NKB-4977/UN2.RST/HKP.05.00/2020.
Publisher Copyright:
© 2022 Novel Carbon Resource Sciences. All rights reserved.
PY - 2022/12
Y1 - 2022/12
N2 - Modifications of TiO2 in photocatalytic hydrogen production have been widely studied to resolve its limitations in harnessing visible light and electron-hole recombination. Among them is by the combination of Graphene and Fe dopant. This study examines the effects of various concentrations of Fe on Fe-Graphene/TiO2 and various polyalcohols as sacrificial agents for H2 production. Graphene/TiO2 and Fe-Graphene/TiO2 were synthesized by a wet-impregnation method. Characterizations were applied on TiO2 P25, Graphene/TiO2, and Fe-Graphene/TiO2, using XRD, SEM-EDX, UV-Vis DRS, and FTIR techniques to analyze the properties of the catalysts. H2 production experiment was carried out for 5 h in a reactor that enables internal illumination, equipped with a 20W UV lamp, burette, and cooling water. GC analysis of gas sample on the burette confirmed the formation of hydrogen. The accumulation of H2 products indicated that 0.2% Fe on Fe-Graphene/TiO2 with a bandgap of 3.03 eV offers up to 80% higher H2 production than TiO2 P25. Photocatalytic H2 production with Fe-Graphene/TiO2 and 10% v/v alcohols as sacrificial agents were revealed to decrease in the following order: glycerol > ethylene glycol > methanol > propylene glycol > n-propanol. Correlations were obtained between H2 yield and key alcohol properties, notably the number of α-H, polarity, and oxidation potential of the alcohols.
AB - Modifications of TiO2 in photocatalytic hydrogen production have been widely studied to resolve its limitations in harnessing visible light and electron-hole recombination. Among them is by the combination of Graphene and Fe dopant. This study examines the effects of various concentrations of Fe on Fe-Graphene/TiO2 and various polyalcohols as sacrificial agents for H2 production. Graphene/TiO2 and Fe-Graphene/TiO2 were synthesized by a wet-impregnation method. Characterizations were applied on TiO2 P25, Graphene/TiO2, and Fe-Graphene/TiO2, using XRD, SEM-EDX, UV-Vis DRS, and FTIR techniques to analyze the properties of the catalysts. H2 production experiment was carried out for 5 h in a reactor that enables internal illumination, equipped with a 20W UV lamp, burette, and cooling water. GC analysis of gas sample on the burette confirmed the formation of hydrogen. The accumulation of H2 products indicated that 0.2% Fe on Fe-Graphene/TiO2 with a bandgap of 3.03 eV offers up to 80% higher H2 production than TiO2 P25. Photocatalytic H2 production with Fe-Graphene/TiO2 and 10% v/v alcohols as sacrificial agents were revealed to decrease in the following order: glycerol > ethylene glycol > methanol > propylene glycol > n-propanol. Correlations were obtained between H2 yield and key alcohol properties, notably the number of α-H, polarity, and oxidation potential of the alcohols.
KW - Fe-Graphene/TiO2
KW - Hydrogen
KW - Photocatalytic
KW - Polyalcohol
KW - Sacrificial Agent
UR - http://www.scopus.com/inward/record.url?scp=85147265380&partnerID=8YFLogxK
U2 - 10.5109/6625736
DO - 10.5109/6625736
M3 - Article
AN - SCOPUS:85147265380
SN - 2189-0420
VL - 9
SP - 1244
EP - 1251
JO - Evergreen
JF - Evergreen
IS - 4
ER -
