TY - JOUR
T1 - Porous Hematite Photocatalytic Structures on Freestanding CuO-Sb2O5-SnO2 Ceramics for Solar-Driven Water Splitting and Flow-Through Water Purification
AU - Corrales-Mendoza, Iván
AU - Bondarchuk, Alexander N.
AU - Aguilar-Martínez, Josué A.
AU - Marken, Frank
AU - Cienfuegos-Pelaes, Rene F.
AU - Coronado, Raúl Salas
AU - Martínez-González, Carlos A.
PY - 2024/11/20
Y1 - 2024/11/20
N2 - High porosity and large photoactive surface of photoelectrodes grown on nano-grained and conductive ceramics provide freestanding structures for applications in photoelectrolysis and flow-through water purification. This study presents unmodified hematite photoelectrodes grown on CuO-Sb2O5-SnO2 ceramics, exhibiting photocurrent density of 0.63 mA cm−2 at 1.23 V versus a reversible hydrogen electrode (RHE) under AM1.5G radiation. The obtained photoelectrodes are tested for cleaning seawater contaminated with methylene blue. The photocatalytic structures are examined by photoelectrochemical measurements, x-ray diffraction, scanning electron microscopy, energy-dispersive x-ray spectroscopy, x-ray photoelectron spectroscopy, ultraviolet–visible spectroscopy, and Raman spectroscopy. The influence of substrate temperature on photocurrents obtained with these photoelectrodes is studied and discussed.
AB - High porosity and large photoactive surface of photoelectrodes grown on nano-grained and conductive ceramics provide freestanding structures for applications in photoelectrolysis and flow-through water purification. This study presents unmodified hematite photoelectrodes grown on CuO-Sb2O5-SnO2 ceramics, exhibiting photocurrent density of 0.63 mA cm−2 at 1.23 V versus a reversible hydrogen electrode (RHE) under AM1.5G radiation. The obtained photoelectrodes are tested for cleaning seawater contaminated with methylene blue. The photocatalytic structures are examined by photoelectrochemical measurements, x-ray diffraction, scanning electron microscopy, energy-dispersive x-ray spectroscopy, x-ray photoelectron spectroscopy, ultraviolet–visible spectroscopy, and Raman spectroscopy. The influence of substrate temperature on photocurrents obtained with these photoelectrodes is studied and discussed.
KW - Hematite
KW - photoanode
KW - photocatalysis
KW - solar energy
KW - tin-dioxide ceramics
KW - water splitting
UR - http://www.scopus.com/inward/record.url?scp=85209677583&partnerID=8YFLogxK
U2 - 10.1007/s11664-024-11603-x
DO - 10.1007/s11664-024-11603-x
M3 - Article
AN - SCOPUS:85209677583
SN - 0361-5235
VL - 54
SP - 556
EP - 567
JO - Journal of Electronic Materials
JF - Journal of Electronic Materials
IS - 1
ER -