TY - JOUR
T1 - Influence of ZnS wurtzite–sphalerite junctions on ZnOCore-ZnSShell-1D photocatalysts for H2 production
AU - Mendoza-Damián, Guadalupe
AU - Hernández-Gordillo, Agileo
AU - Fernández-García, Ma Eufemia
AU - Acevedo-Peña, Próspero
AU - Tzompantzi-Morales, Francisco Javier
AU - Pérez-Hernández, Raúl
N1 - Publisher Copyright:
© 2019 Hydrogen Energy Publications LLC
PY - 2019/4/23
Y1 - 2019/4/23
N2 - The ZnOcore-ZnSshell like nanoparticles have been prepared in ethanol by the hydrothermal method using different sulfur loading. These kind of nanomaterials were characterized by X-ray diffraction, Scanning and Transmission Electron Microscopy, Photoluminescence, and the surface area was determined by BET method. Photocatalytic H2 production from ethanol in aqueous solution has been studied at ambient temperature under UV irradiation and molecular simulation was also included. The optimum ZnS contents for H2 production, from ethanol aqueous solution, on the ZnOcore-ZnSshell like nanoparticles were 50 mol% of S loading on ZnO-1D. The H2 yield was about 1200–1500 μmol/hg obtained under prolonged time irradiation. Experimental results showed that the photocatalytic H2 production could be enhanced remarkably by depositing a suitable amount of ZnS on ZnO-1D surface. Based on our simulation results, we suggest that the water and ethanol were adsorbed preferentially on the surface of sphalerite than on the wurtzite structure and H2 is released from the sphalerite structure.
AB - The ZnOcore-ZnSshell like nanoparticles have been prepared in ethanol by the hydrothermal method using different sulfur loading. These kind of nanomaterials were characterized by X-ray diffraction, Scanning and Transmission Electron Microscopy, Photoluminescence, and the surface area was determined by BET method. Photocatalytic H2 production from ethanol in aqueous solution has been studied at ambient temperature under UV irradiation and molecular simulation was also included. The optimum ZnS contents for H2 production, from ethanol aqueous solution, on the ZnOcore-ZnSshell like nanoparticles were 50 mol% of S loading on ZnO-1D. The H2 yield was about 1200–1500 μmol/hg obtained under prolonged time irradiation. Experimental results showed that the photocatalytic H2 production could be enhanced remarkably by depositing a suitable amount of ZnS on ZnO-1D surface. Based on our simulation results, we suggest that the water and ethanol were adsorbed preferentially on the surface of sphalerite than on the wurtzite structure and H2 is released from the sphalerite structure.
KW - Core-shell
KW - H production
KW - ZnO
KW - ZnS heterostructure
KW - ZnS simulation
UR - http://www.scopus.com/inward/record.url?scp=85063050145&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2019.02.193
DO - 10.1016/j.ijhydene.2019.02.193
M3 - Artículo
SN - 0360-3199
VL - 44
SP - 10528
EP - 10540
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 21
ER -