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RESEARCH PRODUCT
ZnO/ZnS heterostructures for hydrogen production by photoelectrochemical water splitting
M.t. MontañésRita Sánchez-tovarR.m. Fernández-domeneAmparo Sanz-marcoJosé García-antónsubject
Materials scienceGeneral Chemical EngineeringInorganic chemistry02 engineering and technologyElectrolyte010402 general chemistry01 natural sciencesINGENIERIA QUIMICAsymbols.namesakeZINCRAMAN-SPECTROSCOPYANODIZATIONTIO2 NANOTUBESHydrogen productionAnodizingELECTROLYTESPHOTOCATALYTIC ACTIVITYHeterojunctionGeneral Chemistry021001 nanoscience & nanotechnologyHYDRODYNAMIC CONDITIONSEVOLUTION0104 chemical sciencesARRAYSElectroquímicaField electron emissionsymbolsWater splitting0210 nano-technologyRaman spectroscopySENSITIZED ZNODark currentdescription
This work studies the photoelectrochemical behavior of novel ZnO/ZnS heterostructures obtained by means of anodization in water and glycerol/water/NH4F electrolytes with different Na2S additions under controlled hydrodynamic conditions. For this purpose different techniques such as Field Emission Scanning Electronic Microscopy (FE-SEM) with EDX, Raman spectroscopy and photoelectrochemical water splitting tests under standard AM 1.5 conditions have been carried out. The obtained results showed that the hydrodynamic conditions promoted an ordered nanotubular morphology which facilitates electron-hole separation and consequently, the photoelectrochemical activity for water splitting is enhanced. Additionally, the effect of glycerol in the anodization solutions seems to be beneficial for increasing the dark current photostability.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-01-01 |