TY - JOUR
T1 - Photocatalytic Hydrogen Production by Biomimetic Indium Sulfide Using Mimosa pudica Leaves as Template
AU - Carrasco-Jaim, Omar Ali
AU - Ahumada Lazo, Ruben
AU - Clarke, Phillip
AU - Gomez-Solis, Christian
AU - Fairclough, Simon
AU - Haigh, Sarah
AU - Leontiadou, Marina
AU - Handrup, Karsten
AU - Torres-Martinez, Leticia M.
AU - Flavell, Wendy
N1 - Funding Information:
Authors want to thank CONACYT for financial support to the projects CB-237049 , CB-256645 . Also thank SEP for support for the projects PROFOCIE-2014-19-MSU0011T-18, and Integración de Redes Temáticas 2015-CA-244, as well as FIC-UANL for support for the project PAIFIC-2015. The work at MAX-lab was funded under The European Community's Seventh Framework Programme (FP7/2007–2013) under grant agreement no. 226716 and by EPSRC travel grant EP/H0020446/1. MAL and WRF would like to thank EPSRC for financial support (grant number EP/K008544/1 ). In addition, the authors want to thank CONACYT for the Master in Science scholarship support for Omar Ali Carrasco Jaim, No. 287841 and PhD scholarship for Ruben Ahumada Lazo No. 284566. S. J. H. acknowledges funding from the European Research Council (Horizon 2020, grant agreement ERC-2016-STG-EvoluTEM-715502 ). The data associated with this paper are openly available from The University of Manchester eScholar Data Repository: dx.doi.org/10.15127/1.307290.
Publisher Copyright:
© 2018 Hydrogen Energy Publications LLC
PY - 2019/1/28
Y1 - 2019/1/28
N2 - Biomimetic sulfur-deficient indium sulfide (In2.77S4) was synthesized by a template-assisted hydrothermal method using leaves of Mimosa pudica as a template for the first time. The effect of this template in modifying the morphology of the semiconductor particles was determined by physicochemical characterization, revealing an increase in surface area, decrease in microsphere size and pore size and an increase in pore volume density in samples synthesized with the template. X-ray photoelectron spectroscopy (XPS) analysis showed the presence of organic sulfur (S-O/S-C/S-H) and sulfur oxide species (-SO2, SO32-, SO42-) at the surface of the indium sulfide in samples synthesized with the template. Biomimetic indium sulfide also showed significant amounts of Fe introduced as a contaminant present on the Mimosa pudica leaves. The presence of these sulfur and iron species favors the photocatalytic activity for hydrogen production by their acting as a sacrificial reagent and promoting water oxidation on the surface of the templated particles, respectively. The photocatalytic hydrogen production rates over optimally-prepared biomimetic indium sulfide and indium sulfide synthesized without the organic template were 73 and 22 μmol·g-1, respectively, indicating an improvement by a factor of three in the templated sample.
AB - Biomimetic sulfur-deficient indium sulfide (In2.77S4) was synthesized by a template-assisted hydrothermal method using leaves of Mimosa pudica as a template for the first time. The effect of this template in modifying the morphology of the semiconductor particles was determined by physicochemical characterization, revealing an increase in surface area, decrease in microsphere size and pore size and an increase in pore volume density in samples synthesized with the template. X-ray photoelectron spectroscopy (XPS) analysis showed the presence of organic sulfur (S-O/S-C/S-H) and sulfur oxide species (-SO2, SO32-, SO42-) at the surface of the indium sulfide in samples synthesized with the template. Biomimetic indium sulfide also showed significant amounts of Fe introduced as a contaminant present on the Mimosa pudica leaves. The presence of these sulfur and iron species favors the photocatalytic activity for hydrogen production by their acting as a sacrificial reagent and promoting water oxidation on the surface of the templated particles, respectively. The photocatalytic hydrogen production rates over optimally-prepared biomimetic indium sulfide and indium sulfide synthesized without the organic template were 73 and 22 μmol·g-1, respectively, indicating an improvement by a factor of three in the templated sample.
KW - In2.77S4
KW - template-assisted hydrothermal
KW - photocatalytic hydrogen production
KW - XPS Analysis
KW - Template-assisted hydrothermal
KW - Photocatalytic hydrogen production
KW - XPS analysis
KW - In S
KW - In 2.77 S 4
UR - http://www.scopus.com/inward/record.url?scp=85059463437&partnerID=8YFLogxK
UR - http://www.mendeley.com/research/photocatalytic-hydrogen-production-biomimetic-indium-sulfide-using-mimosa-pudica-leaves-template
U2 - 10.1016/j.ijhydene.2018.12.043
DO - 10.1016/j.ijhydene.2018.12.043
M3 - Article
SN - 0360-3199
VL - 44
SP - 2770
EP - 2783
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 5
ER -
